(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.ExcelJS = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }

function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var fs = require('fs');

var fastCsv = require('fast-csv');

var customParseFormat = require('dayjs/plugin/customParseFormat');

var dayjs = require('dayjs').extend(customParseFormat);

var StreamBuf = require('../utils/stream-buf');

var _require = require('../utils/utils'),
    exists = _require.fs.exists;
/* eslint-disable quote-props */


var SpecialValues = {
  true: true,
  false: false,
  '#N/A': {
    error: '#N/A'
  },
  '#REF!': {
    error: '#REF!'
  },
  '#NAME?': {
    error: '#NAME?'
  },
  '#DIV/0!': {
    error: '#DIV/0!'
  },
  '#NULL!': {
    error: '#NULL!'
  },
  '#VALUE!': {
    error: '#VALUE!'
  },
  '#NUM!': {
    error: '#NUM!'
  }
};
/* eslint-ensable quote-props */

var CSV =
/*#__PURE__*/
function () {
  function CSV(workbook) {
    _classCallCheck(this, CSV);

    this.workbook = workbook;
    this.worksheet = null;
  }

  _createClass(CSV, [{
    key: "readFile",
    value: function () {
      var _readFile = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee(filename, options) {
        var stream, worksheet;
        return regeneratorRuntime.wrap(function _callee$(_context) {
          while (1) {
            switch (_context.prev = _context.next) {
              case 0:
                options = options || {};
                _context.next = 3;
                return exists(filename);

              case 3:
                if (_context.sent) {
                  _context.next = 5;
                  break;
                }

                throw new Error("File not found: ".concat(filename));

              case 5:
                stream = fs.createReadStream(filename);
                _context.next = 8;
                return this.read(stream, options);

              case 8:
                worksheet = _context.sent;
                stream.close();
                return _context.abrupt("return", worksheet);

              case 11:
              case "end":
                return _context.stop();
            }
          }
        }, _callee, this);
      }));

      function readFile(_x, _x2) {
        return _readFile.apply(this, arguments);
      }

      return readFile;
    }()
  }, {
    key: "read",
    value: function read(stream, options) {
      var _this = this;

      options = options || {};
      return new Promise(function (resolve, reject) {
        var csvStream = _this.createInputStream(options).on('worksheet', resolve).on('error', reject);

        stream.pipe(csvStream);
      });
    }
  }, {
    key: "createInputStream",
    value: function createInputStream(options) {
      options = options || {};
      var worksheet = this.workbook.addWorksheet(options.sheetName);
      var dateFormats = options.dateFormats || ['YYYY-MM-DD[T]HH:mm:ss', 'MM-DD-YYYY', 'YYYY-MM-DD'];

      var map = options.map || function (datum) {
        if (datum === '') {
          return null;
        }

        var datumNumber = Number(datum);

        if (!Number.isNaN(datumNumber) && datumNumber !== Infinity) {
          return datumNumber;
        }

        var dt = dateFormats.reduce(function (matchingDate, currentDateFormat) {
          if (matchingDate) {
            return matchingDate;
          }

          var dayjsObj = dayjs(datum, currentDateFormat, true);

          if (dayjsObj.isValid()) {
            return dayjsObj;
          }

          return null;
        }, null);

        if (dt) {
          return new Date(dt.valueOf());
        }

        var special = SpecialValues[datum];

        if (special !== undefined) {
          return special;
        }

        return datum;
      };

      var csvStream = fastCsv.parse(options).on('data', function (data) {
        worksheet.addRow(data.map(map));
      }).on('end', function () {
        csvStream.emit('worksheet', worksheet);
      });
      return csvStream;
    }
  }, {
    key: "write",
    value: function write(stream, options) {
      var _this2 = this;

      return new Promise(function (resolve, reject) {
        options = options || {}; // const encoding = options.encoding || 'utf8';
        // const separator = options.separator || ',';
        // const quoteChar = options.quoteChar || '\'';

        var worksheet = _this2.workbook.getWorksheet(options.sheetName || options.sheetId);

        var csvStream = fastCsv.format(options);
        stream.on('finish', function () {
          resolve();
        });
        csvStream.on('error', reject);
        csvStream.pipe(stream);
        var _options = options,
            dateFormat = _options.dateFormat,
            dateUTC = _options.dateUTC;

        var map = options.map || function (value) {
          if (value) {
            if (value.text || value.hyperlink) {
              return value.hyperlink || value.text || '';
            }

            if (value.formula || value.result) {
              return value.result || '';
            }

            if (value instanceof Date) {
              if (dateFormat) {
                return dateUTC ? dayjs.utc(value).format(dateFormat) : dayjs(value).format(dateFormat);
              }

              return dateUTC ? dayjs.utc(value).format() : dayjs(value).format();
            }

            if (value.error) {
              return value.error;
            }

            if (_typeof(value) === 'object') {
              return JSON.stringify(value);
            }
          }

          return value;
        };

        var includeEmptyRows = options.includeEmptyRows === undefined || options.includeEmptyRows;
        var lastRow = 1;

        if (worksheet) {
          worksheet.eachRow(function (row, rowNumber) {
            if (includeEmptyRows) {
              while (lastRow++ < rowNumber - 1) {
                csvStream.write([]);
              }
            }

            var values = row.values;
            values.shift();
            csvStream.write(values.map(map));
            lastRow = rowNumber;
          });
        }

        csvStream.end();
      });
    }
  }, {
    key: "writeFile",
    value: function writeFile(filename, options) {
      options = options || {};
      var streamOptions = {
        encoding: options.encoding || 'utf8'
      };
      var stream = fs.createWriteStream(filename, streamOptions);
      return this.write(stream, options);
    }
  }, {
    key: "writeBuffer",
    value: function () {
      var _writeBuffer = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee2(options) {
        var stream;
        return regeneratorRuntime.wrap(function _callee2$(_context2) {
          while (1) {
            switch (_context2.prev = _context2.next) {
              case 0:
                stream = new StreamBuf();
                _context2.next = 3;
                return this.write(stream, options);

              case 3:
                return _context2.abrupt("return", stream.read());

              case 4:
              case "end":
                return _context2.stop();
            }
          }
        }, _callee2, this);
      }));

      function writeBuffer(_x3) {
        return _writeBuffer.apply(this, arguments);
      }

      return writeBuffer;
    }()
  }]);

  return CSV;
}();

module.exports = CSV;


},{"../utils/stream-buf":20,"../utils/utils":23,"dayjs":177,"dayjs/plugin/customParseFormat":178,"fast-csv":212,"fs":166}],2:[function(require,module,exports){
'use strict';

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var colCache = require('../utils/col-cache');

var Anchor =
/*#__PURE__*/
function () {
  function Anchor(worksheet, address) {
    var offset = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;

    _classCallCheck(this, Anchor);

    if (!address) {
      this.nativeCol = 0;
      this.nativeColOff = 0;
      this.nativeRow = 0;
      this.nativeRowOff = 0;
    } else if (typeof address === 'string') {
      var decoded = colCache.decodeAddress(address);
      this.nativeCol = decoded.col + offset;
      this.nativeColOff = 0;
      this.nativeRow = decoded.row + offset;
      this.nativeRowOff = 0;
    } else if (address.nativeCol !== undefined) {
      this.nativeCol = address.nativeCol || 0;
      this.nativeColOff = address.nativeColOff || 0;
      this.nativeRow = address.nativeRow || 0;
      this.nativeRowOff = address.nativeRowOff || 0;
    } else if (address.col !== undefined) {
      this.col = address.col + offset;
      this.row = address.row + offset;
    } else {
      this.nativeCol = 0;
      this.nativeColOff = 0;
      this.nativeRow = 0;
      this.nativeRowOff = 0;
    }

    this.worksheet = worksheet;
  }

  _createClass(Anchor, [{
    key: "col",
    get: function get() {
      return this.nativeCol + Math.min(this.colWidth - 1, this.nativeColOff) / this.colWidth;
    },
    set: function set(v) {
      this.nativeCol = Math.floor(v);
      this.nativeColOff = Math.floor((v - this.nativeCol) * this.colWidth);
    }
  }, {
    key: "row",
    get: function get() {
      return this.nativeRow + Math.min(this.rowHeight - 1, this.nativeRowOff) / this.rowHeight;
    },
    set: function set(v) {
      this.nativeRow = Math.floor(v);
      this.nativeRowOff = Math.floor((v - this.nativeRow) * this.rowHeight);
    }
  }, {
    key: "colWidth",
    get: function get() {
      return this.worksheet && this.worksheet.getColumn(this.nativeCol + 1) && this.worksheet.getColumn(this.nativeCol + 1).isCustomWidth ? Math.floor(this.worksheet.getColumn(this.nativeCol + 1).width * 10000) : 640000;
    }
  }, {
    key: "rowHeight",
    get: function get() {
      return this.worksheet && this.worksheet.getRow(this.nativeRow + 1) && this.worksheet.getRow(this.nativeRow + 1).height ? Math.floor(this.worksheet.getRow(this.nativeRow + 1).height * 10000) : 180000;
    }
  }, {
    key: "model",
    get: function get() {
      return {
        nativeCol: this.nativeCol,
        nativeColOff: this.nativeColOff,
        nativeRow: this.nativeRow,
        nativeRowOff: this.nativeRowOff
      };
    },
    set: function set(value) {
      this.nativeCol = value.nativeCol;
      this.nativeColOff = value.nativeColOff;
      this.nativeRow = value.nativeRow;
      this.nativeRowOff = value.nativeRowOff;
    }
  }], [{
    key: "asInstance",
    value: function asInstance(model) {
      return model instanceof Anchor || model == null ? model : new Anchor(model);
    }
  }]);

  return Anchor;
}();

module.exports = Anchor;


},{"../utils/col-cache":17}],3:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

/* eslint-disable max-classes-per-file */
var colCache = require('../utils/col-cache');

var _ = require('../utils/under-dash');

var Enums = require('./enums');

var _require = require('../utils/shared-formula'),
    slideFormula = _require.slideFormula;

var Note = require('./note'); // Cell requirements
//  Operate inside a worksheet
//  Store and retrieve a value with a range of types: text, number, date, hyperlink, reference, formula, etc.
//  Manage/use and manipulate cell format either as local to cell or inherited from column or row.


var Cell =
/*#__PURE__*/
function () {
  function Cell(row, column, address) {
    _classCallCheck(this, Cell);

    if (!row || !column) {
      throw new Error('A Cell needs a Row');
    }

    this._row = row;
    this._column = column;
    colCache.validateAddress(address);
    this._address = address; // TODO: lazy evaluation of this._value

    this._value = Value.create(Cell.Types.Null, this);
    this.style = this._mergeStyle(row.style, column.style, {});
    this._mergeCount = 0;
  }

  _createClass(Cell, [{
    key: "destroy",
    // help GC by removing cyclic (and other) references
    value: function destroy() {
      delete this.style;
      delete this._value;
      delete this._row;
      delete this._column;
      delete this._address;
    } // =========================================================================
    // Styles stuff

  }, {
    key: "_mergeStyle",
    value: function _mergeStyle(rowStyle, colStyle, style) {
      var numFmt = rowStyle && rowStyle.numFmt || colStyle && colStyle.numFmt;
      if (numFmt) style.numFmt = numFmt;
      var font = rowStyle && rowStyle.font || colStyle && colStyle.font;
      if (font) style.font = font;
      var alignment = rowStyle && rowStyle.alignment || colStyle && colStyle.alignment;
      if (alignment) style.alignment = alignment;
      var border = rowStyle && rowStyle.border || colStyle && colStyle.border;
      if (border) style.border = border;
      var fill = rowStyle && rowStyle.fill || colStyle && colStyle.fill;
      if (fill) style.fill = fill;
      var protection = rowStyle && rowStyle.protection || colStyle && colStyle.protection;
      if (protection) style.protection = protection;
      return style;
    } // =========================================================================
    // return the address for this cell

  }, {
    key: "toCsvString",
    value: function toCsvString() {
      return this._value.toCsvString();
    } // =========================================================================
    // Merge stuff

  }, {
    key: "addMergeRef",
    value: function addMergeRef() {
      this._mergeCount++;
    }
  }, {
    key: "releaseMergeRef",
    value: function releaseMergeRef() {
      this._mergeCount--;
    }
  }, {
    key: "merge",
    value: function merge(master) {
      this._value.release();

      this._value = Value.create(Cell.Types.Merge, this, master);
      this.style = master.style;
    }
  }, {
    key: "unmerge",
    value: function unmerge() {
      if (this.type === Cell.Types.Merge) {
        this._value.release();

        this._value = Value.create(Cell.Types.Null, this);
        this.style = this._mergeStyle(this._row.style, this._column.style, {});
      }
    }
  }, {
    key: "isMergedTo",
    value: function isMergedTo(master) {
      if (this._value.type !== Cell.Types.Merge) return false;
      return this._value.isMergedTo(master);
    }
  }, {
    key: "toString",
    value: function toString() {
      return this.text;
    }
  }, {
    key: "_upgradeToHyperlink",
    value: function _upgradeToHyperlink(hyperlink) {
      // if this cell is a string, turn it into a Hyperlink
      if (this.type === Cell.Types.String) {
        this._value = Value.create(Cell.Types.Hyperlink, this, {
          text: this._value.value,
          hyperlink: hyperlink
        });
      }
    } // =========================================================================
    // Formula stuff

  }, {
    key: "addName",
    value: function addName(name) {
      this.workbook.definedNames.addEx(this.fullAddress, name);
    }
  }, {
    key: "removeName",
    value: function removeName(name) {
      this.workbook.definedNames.removeEx(this.fullAddress, name);
    }
  }, {
    key: "removeAllNames",
    value: function removeAllNames() {
      this.workbook.definedNames.removeAllNames(this.fullAddress);
    } // =========================================================================
    // Data Validation stuff

  }, {
    key: "worksheet",
    get: function get() {
      return this._row.worksheet;
    }
  }, {
    key: "workbook",
    get: function get() {
      return this._row.worksheet.workbook;
    }
  }, {
    key: "numFmt",
    get: function get() {
      return this.style.numFmt;
    },
    set: function set(value) {
      this.style.numFmt = value;
    }
  }, {
    key: "font",
    get: function get() {
      return this.style.font;
    },
    set: function set(value) {
      this.style.font = value;
    }
  }, {
    key: "alignment",
    get: function get() {
      return this.style.alignment;
    },
    set: function set(value) {
      this.style.alignment = value;
    }
  }, {
    key: "border",
    get: function get() {
      return this.style.border;
    },
    set: function set(value) {
      this.style.border = value;
    }
  }, {
    key: "fill",
    get: function get() {
      return this.style.fill;
    },
    set: function set(value) {
      this.style.fill = value;
    }
  }, {
    key: "protection",
    get: function get() {
      return this.style.protection;
    },
    set: function set(value) {
      this.style.protection = value;
    }
  }, {
    key: "address",
    get: function get() {
      return this._address;
    }
  }, {
    key: "row",
    get: function get() {
      return this._row.number;
    }
  }, {
    key: "col",
    get: function get() {
      return this._column.number;
    }
  }, {
    key: "$col$row",
    get: function get() {
      return "$".concat(this._column.letter, "$").concat(this.row);
    } // =========================================================================
    // Value stuff

  }, {
    key: "type",
    get: function get() {
      return this._value.type;
    }
  }, {
    key: "effectiveType",
    get: function get() {
      return this._value.effectiveType;
    }
  }, {
    key: "isMerged",
    get: function get() {
      return this._mergeCount > 0 || this.type === Cell.Types.Merge;
    }
  }, {
    key: "master",
    get: function get() {
      if (this.type === Cell.Types.Merge) {
        return this._value.master;
      }

      return this; // an unmerged cell is its own master
    }
  }, {
    key: "isHyperlink",
    get: function get() {
      return this._value.type === Cell.Types.Hyperlink;
    }
  }, {
    key: "hyperlink",
    get: function get() {
      return this._value.hyperlink;
    } // return the value

  }, {
    key: "value",
    get: function get() {
      return this._value.value;
    } // set the value - can be number, string or raw
    ,
    set: function set(v) {
      // special case - merge cells set their master's value
      if (this.type === Cell.Types.Merge) {
        this._value.master.value = v;
        return;
      }

      this._value.release(); // assign value


      this._value = Value.create(Value.getType(v), this, v);
    }
  }, {
    key: "note",
    get: function get() {
      return this._comment && this._comment.note;
    },
    set: function set(note) {
      this._comment = new Note(note);
    }
  }, {
    key: "text",
    get: function get() {
      return this._value.toString();
    }
  }, {
    key: "html",
    get: function get() {
      return _.escapeHtml(this.text);
    }
  }, {
    key: "formula",
    get: function get() {
      return this._value.formula;
    }
  }, {
    key: "result",
    get: function get() {
      return this._value.result;
    }
  }, {
    key: "formulaType",
    get: function get() {
      return this._value.formulaType;
    } // =========================================================================
    // Name stuff

  }, {
    key: "fullAddress",
    get: function get() {
      var worksheet = this._row.worksheet;
      return {
        sheetName: worksheet.name,
        address: this.address,
        row: this.row,
        col: this.col
      };
    }
  }, {
    key: "name",
    get: function get() {
      return this.names[0];
    },
    set: function set(value) {
      this.names = [value];
    }
  }, {
    key: "names",
    get: function get() {
      return this.workbook.definedNames.getNamesEx(this.fullAddress);
    },
    set: function set(value) {
      var _this = this;

      var definedNames = this.workbook.definedNames;
      definedNames.removeAllNames(this.fullAddress);
      value.forEach(function (name) {
        definedNames.addEx(_this.fullAddress, name);
      });
    }
  }, {
    key: "_dataValidations",
    get: function get() {
      return this.worksheet.dataValidations;
    }
  }, {
    key: "dataValidation",
    get: function get() {
      return this._dataValidations.find(this.address);
    },
    set: function set(value) {
      this._dataValidations.add(this.address, value);
    } // =========================================================================
    // Model stuff

  }, {
    key: "model",
    get: function get() {
      var model = this._value.model;
      model.style = this.style;

      if (this._comment) {
        model.comment = this._comment.model;
      }

      return model;
    },
    set: function set(value) {
      this._value.release();

      this._value = Value.create(value.type, this);
      this._value.model = value;

      if (value.comment) {
        switch (value.comment.type) {
          case 'note':
            this._comment = Note.fromModel(value.comment);
            break;
        }
      }

      if (value.style) {
        this.style = value.style;
      } else {
        this.style = {};
      }
    }
  }]);

  return Cell;
}();

Cell.Types = Enums.ValueType; // =============================================================================
// Internal Value Types

var NullValue =
/*#__PURE__*/
function () {
  function NullValue(cell) {
    _classCallCheck(this, NullValue);

    this.model = {
      address: cell.address,
      type: Cell.Types.Null
    };
  }

  _createClass(NullValue, [{
    key: "toCsvString",
    value: function toCsvString() {
      return '';
    }
  }, {
    key: "release",
    value: function release() {}
  }, {
    key: "toString",
    value: function toString() {
      return '';
    }
  }, {
    key: "value",
    get: function get() {
      return null;
    },
    set: function set(value) {// nothing to do
    }
  }, {
    key: "type",
    get: function get() {
      return Cell.Types.Null;
    }
  }, {
    key: "effectiveType",
    get: function get() {
      return Cell.Types.Null;
    }
  }, {
    key: "address",
    get: function get() {
      return this.model.address;
    },
    set: function set(value) {
      this.model.address = value;
    }
  }]);

  return NullValue;
}();

var NumberValue =
/*#__PURE__*/
function () {
  function NumberValue(cell, value) {
    _classCallCheck(this, NumberValue);

    this.model = {
      address: cell.address,
      type: Cell.Types.Number,
      value: value
    };
  }

  _createClass(NumberValue, [{
    key: "toCsvString",
    value: function toCsvString() {
      return this.model.value.toString();
    }
  }, {
    key: "release",
    value: function release() {}
  }, {
    key: "toString",
    value: function toString() {
      return this.model.value.toString();
    }
  }, {
    key: "value",
    get: function get() {
      return this.model.value;
    },
    set: function set(value) {
      this.model.value = value;
    }
  }, {
    key: "type",
    get: function get() {
      return Cell.Types.Number;
    }
  }, {
    key: "effectiveType",
    get: function get() {
      return Cell.Types.Number;
    }
  }, {
    key: "address",
    get: function get() {
      return this.model.address;
    },
    set: function set(value) {
      this.model.address = value;
    }
  }]);

  return NumberValue;
}();

var StringValue =
/*#__PURE__*/
function () {
  function StringValue(cell, value) {
    _classCallCheck(this, StringValue);

    this.model = {
      address: cell.address,
      type: Cell.Types.String,
      value: value
    };
  }

  _createClass(StringValue, [{
    key: "toCsvString",
    value: function toCsvString() {
      return "\"".concat(this.model.value.replace(/"/g, '""'), "\"");
    }
  }, {
    key: "release",
    value: function release() {}
  }, {
    key: "toString",
    value: function toString() {
      return this.model.value;
    }
  }, {
    key: "value",
    get: function get() {
      return this.model.value;
    },
    set: function set(value) {
      this.model.value = value;
    }
  }, {
    key: "type",
    get: function get() {
      return Cell.Types.String;
    }
  }, {
    key: "effectiveType",
    get: function get() {
      return Cell.Types.String;
    }
  }, {
    key: "address",
    get: function get() {
      return this.model.address;
    },
    set: function set(value) {
      this.model.address = value;
    }
  }]);

  return StringValue;
}();

var RichTextValue =
/*#__PURE__*/
function () {
  function RichTextValue(cell, value) {
    _classCallCheck(this, RichTextValue);

    this.model = {
      address: cell.address,
      type: Cell.Types.String,
      value: value
    };
  }

  _createClass(RichTextValue, [{
    key: "toString",
    value: function toString() {
      return this.model.value.richText.map(function (t) {
        return t.text;
      }).join('');
    }
  }, {
    key: "toCsvString",
    value: function toCsvString() {
      return "\"".concat(this.text.replace(/"/g, '""'), "\"");
    }
  }, {
    key: "release",
    value: function release() {}
  }, {
    key: "value",
    get: function get() {
      return this.model.value;
    },
    set: function set(value) {
      this.model.value = value;
    }
  }, {
    key: "type",
    get: function get() {
      return Cell.Types.RichText;
    }
  }, {
    key: "effectiveType",
    get: function get() {
      return Cell.Types.RichText;
    }
  }, {
    key: "address",
    get: function get() {
      return this.model.address;
    },
    set: function set(value) {
      this.model.address = value;
    }
  }]);

  return RichTextValue;
}();

var DateValue =
/*#__PURE__*/
function () {
  function DateValue(cell, value) {
    _classCallCheck(this, DateValue);

    this.model = {
      address: cell.address,
      type: Cell.Types.Date,
      value: value
    };
  }

  _createClass(DateValue, [{
    key: "toCsvString",
    value: function toCsvString() {
      return this.model.value.toISOString();
    }
  }, {
    key: "release",
    value: function release() {}
  }, {
    key: "toString",
    value: function toString() {
      return this.model.value.toString();
    }
  }, {
    key: "value",
    get: function get() {
      return this.model.value;
    },
    set: function set(value) {
      this.model.value = value;
    }
  }, {
    key: "type",
    get: function get() {
      return Cell.Types.Date;
    }
  }, {
    key: "effectiveType",
    get: function get() {
      return Cell.Types.Date;
    }
  }, {
    key: "address",
    get: function get() {
      return this.model.address;
    },
    set: function set(value) {
      this.model.address = value;
    }
  }]);

  return DateValue;
}();

var HyperlinkValue =
/*#__PURE__*/
function () {
  function HyperlinkValue(cell, value) {
    _classCallCheck(this, HyperlinkValue);

    this.model = {
      address: cell.address,
      type: Cell.Types.Hyperlink,
      text: value ? value.text : undefined,
      hyperlink: value ? value.hyperlink : undefined
    };

    if (value && value.tooltip) {
      this.model.tooltip = value.tooltip;
    }
  }

  _createClass(HyperlinkValue, [{
    key: "toCsvString",
    value: function toCsvString() {
      return this.model.hyperlink;
    }
  }, {
    key: "release",
    value: function release() {}
  }, {
    key: "toString",
    value: function toString() {
      return this.model.text;
    }
  }, {
    key: "value",
    get: function get() {
      var v = {
        text: this.model.text,
        hyperlink: this.model.hyperlink
      };

      if (this.model.tooltip) {
        v.tooltip = this.model.tooltip;
      }

      return v;
    },
    set: function set(value) {
      this.model = {
        text: value.text,
        hyperlink: value.hyperlink
      };

      if (value.tooltip) {
        this.model.tooltip = value.tooltip;
      }
    }
  }, {
    key: "text",
    get: function get() {
      return this.model.text;
    },
    set: function set(value) {
      this.model.text = value;
    }
    /*
    get tooltip() {
      return this.model.tooltip;
    }
     set tooltip(value) {
      this.model.tooltip = value;
    } */

  }, {
    key: "hyperlink",
    get: function get() {
      return this.model.hyperlink;
    },
    set: function set(value) {
      this.model.hyperlink = value;
    }
  }, {
    key: "type",
    get: function get() {
      return Cell.Types.Hyperlink;
    }
  }, {
    key: "effectiveType",
    get: function get() {
      return Cell.Types.Hyperlink;
    }
  }, {
    key: "address",
    get: function get() {
      return this.model.address;
    },
    set: function set(value) {
      this.model.address = value;
    }
  }]);

  return HyperlinkValue;
}();

var MergeValue =
/*#__PURE__*/
function () {
  function MergeValue(cell, master) {
    _classCallCheck(this, MergeValue);

    this.model = {
      address: cell.address,
      type: Cell.Types.Merge,
      master: master ? master.address : undefined
    };
    this._master = master;

    if (master) {
      master.addMergeRef();
    }
  }

  _createClass(MergeValue, [{
    key: "isMergedTo",
    value: function isMergedTo(master) {
      return master === this._master;
    }
  }, {
    key: "toCsvString",
    value: function toCsvString() {
      return '';
    }
  }, {
    key: "release",
    value: function release() {
      this._master.releaseMergeRef();
    }
  }, {
    key: "toString",
    value: function toString() {
      return this.value.toString();
    }
  }, {
    key: "value",
    get: function get() {
      return this._master.value;
    },
    set: function set(value) {
      if (value instanceof Cell) {
        if (this._master) {
          this._master.releaseMergeRef();
        }

        value.addMergeRef();
        this._master = value;
      } else {
        this._master.value = value;
      }
    }
  }, {
    key: "master",
    get: function get() {
      return this._master;
    }
  }, {
    key: "type",
    get: function get() {
      return Cell.Types.Merge;
    }
  }, {
    key: "effectiveType",
    get: function get() {
      return this._master.effectiveType;
    }
  }, {
    key: "address",
    get: function get() {
      return this.model.address;
    },
    set: function set(value) {
      this.model.address = value;
    }
  }]);

  return MergeValue;
}();

var FormulaValue =
/*#__PURE__*/
function () {
  function FormulaValue(cell, value) {
    _classCallCheck(this, FormulaValue);

    this.cell = cell;
    this.model = {
      address: cell.address,
      type: Cell.Types.Formula,
      shareType: value ? value.shareType : undefined,
      ref: value ? value.ref : undefined,
      formula: value ? value.formula : undefined,
      sharedFormula: value ? value.sharedFormula : undefined,
      result: value ? value.result : undefined
    };
  }

  _createClass(FormulaValue, [{
    key: "_copyModel",
    value: function _copyModel(model) {
      var copy = {};

      var cp = function cp(name) {
        var value = model[name];

        if (value) {
          copy[name] = value;
        }
      };

      cp('formula');
      cp('result');
      cp('ref');
      cp('shareType');
      cp('sharedFormula');
      return copy;
    }
  }, {
    key: "validate",
    value: function validate(value) {
      switch (Value.getType(value)) {
        case Cell.Types.Null:
        case Cell.Types.String:
        case Cell.Types.Number:
        case Cell.Types.Date:
          break;

        case Cell.Types.Hyperlink:
        case Cell.Types.Formula:
        default:
          throw new Error('Cannot process that type of result value');
      }
    }
  }, {
    key: "_getTranslatedFormula",
    value: function _getTranslatedFormula() {
      if (!this._translatedFormula && this.model.sharedFormula) {
        var worksheet = this.cell.worksheet;
        var master = worksheet.findCell(this.model.sharedFormula);
        this._translatedFormula = master && slideFormula(master.formula, master.address, this.model.address);
      }

      return this._translatedFormula;
    }
  }, {
    key: "toCsvString",
    value: function toCsvString() {
      return "".concat(this.model.result || '');
    }
  }, {
    key: "release",
    value: function release() {}
  }, {
    key: "toString",
    value: function toString() {
      return this.model.result ? this.model.result.toString() : '';
    }
  }, {
    key: "value",
    get: function get() {
      return this._copyModel(this.model);
    },
    set: function set(value) {
      this.model = this._copyModel(value);
    }
  }, {
    key: "dependencies",
    get: function get() {
      // find all the ranges and cells mentioned in the formula
      var ranges = this.formula.match(/([a-zA-Z0-9]+!)?[A-Z]{1,3}\d{1,4}:[A-Z]{1,3}\d{1,4}/g);
      var cells = this.formula.replace(/([a-zA-Z0-9]+!)?[A-Z]{1,3}\d{1,4}:[A-Z]{1,3}\d{1,4}/g, '').match(/([a-zA-Z0-9]+!)?[A-Z]{1,3}\d{1,4}/g);
      return {
        ranges: ranges,
        cells: cells
      };
    }
  }, {
    key: "formula",
    get: function get() {
      return this.model.formula || this._getTranslatedFormula();
    },
    set: function set(value) {
      this.model.formula = value;
    }
  }, {
    key: "formulaType",
    get: function get() {
      if (this.model.formula) {
        return Enums.FormulaType.Master;
      }

      if (this.model.sharedFormula) {
        return Enums.FormulaType.Shared;
      }

      return Enums.FormulaType.None;
    }
  }, {
    key: "result",
    get: function get() {
      return this.model.result;
    },
    set: function set(value) {
      this.model.result = value;
    }
  }, {
    key: "type",
    get: function get() {
      return Cell.Types.Formula;
    }
  }, {
    key: "effectiveType",
    get: function get() {
      var v = this.model.result;

      if (v === null || v === undefined) {
        return Enums.ValueType.Null;
      }

      if (v instanceof String || typeof v === 'string') {
        return Enums.ValueType.String;
      }

      if (typeof v === 'number') {
        return Enums.ValueType.Number;
      }

      if (v instanceof Date) {
        return Enums.ValueType.Date;
      }

      if (v.text && v.hyperlink) {
        return Enums.ValueType.Hyperlink;
      }

      if (v.formula) {
        return Enums.ValueType.Formula;
      }

      return Enums.ValueType.Null;
    }
  }, {
    key: "address",
    get: function get() {
      return this.model.address;
    },
    set: function set(value) {
      this.model.address = value;
    }
  }]);

  return FormulaValue;
}();

var SharedStringValue =
/*#__PURE__*/
function () {
  function SharedStringValue(cell, value) {
    _classCallCheck(this, SharedStringValue);

    this.model = {
      address: cell.address,
      type: Cell.Types.SharedString,
      value: value
    };
  }

  _createClass(SharedStringValue, [{
    key: "toCsvString",
    value: function toCsvString() {
      return this.model.value.toString();
    }
  }, {
    key: "release",
    value: function release() {}
  }, {
    key: "toString",
    value: function toString() {
      return this.model.value.toString();
    }
  }, {
    key: "value",
    get: function get() {
      return this.model.value;
    },
    set: function set(value) {
      this.model.value = value;
    }
  }, {
    key: "type",
    get: function get() {
      return Cell.Types.SharedString;
    }
  }, {
    key: "effectiveType",
    get: function get() {
      return Cell.Types.SharedString;
    }
  }, {
    key: "address",
    get: function get() {
      return this.model.address;
    },
    set: function set(value) {
      this.model.address = value;
    }
  }]);

  return SharedStringValue;
}();

var BooleanValue =
/*#__PURE__*/
function () {
  function BooleanValue(cell, value) {
    _classCallCheck(this, BooleanValue);

    this.model = {
      address: cell.address,
      type: Cell.Types.Boolean,
      value: value
    };
  }

  _createClass(BooleanValue, [{
    key: "toCsvString",
    value: function toCsvString() {
      return this.model.value ? 1 : 0;
    }
  }, {
    key: "release",
    value: function release() {}
  }, {
    key: "toString",
    value: function toString() {
      return this.model.value.toString();
    }
  }, {
    key: "value",
    get: function get() {
      return this.model.value;
    },
    set: function set(value) {
      this.model.value = value;
    }
  }, {
    key: "type",
    get: function get() {
      return Cell.Types.Boolean;
    }
  }, {
    key: "effectiveType",
    get: function get() {
      return Cell.Types.Boolean;
    }
  }, {
    key: "address",
    get: function get() {
      return this.model.address;
    },
    set: function set(value) {
      this.model.address = value;
    }
  }]);

  return BooleanValue;
}();

var ErrorValue =
/*#__PURE__*/
function () {
  function ErrorValue(cell, value) {
    _classCallCheck(this, ErrorValue);

    this.model = {
      address: cell.address,
      type: Cell.Types.Error,
      value: value
    };
  }

  _createClass(ErrorValue, [{
    key: "toCsvString",
    value: function toCsvString() {
      return this.toString();
    }
  }, {
    key: "release",
    value: function release() {}
  }, {
    key: "toString",
    value: function toString() {
      return this.model.value.error.toString();
    }
  }, {
    key: "value",
    get: function get() {
      return this.model.value;
    },
    set: function set(value) {
      this.model.value = value;
    }
  }, {
    key: "type",
    get: function get() {
      return Cell.Types.Error;
    }
  }, {
    key: "effectiveType",
    get: function get() {
      return Cell.Types.Error;
    }
  }, {
    key: "address",
    get: function get() {
      return this.model.address;
    },
    set: function set(value) {
      this.model.address = value;
    }
  }]);

  return ErrorValue;
}();

var JSONValue =
/*#__PURE__*/
function () {
  function JSONValue(cell, value) {
    _classCallCheck(this, JSONValue);

    this.model = {
      address: cell.address,
      type: Cell.Types.String,
      value: JSON.stringify(value),
      rawValue: value
    };
  }

  _createClass(JSONValue, [{
    key: "toCsvString",
    value: function toCsvString() {
      return this.model.value;
    }
  }, {
    key: "release",
    value: function release() {}
  }, {
    key: "toString",
    value: function toString() {
      return this.model.value;
    }
  }, {
    key: "value",
    get: function get() {
      return this.model.rawValue;
    },
    set: function set(value) {
      this.model.rawValue = value;
      this.model.value = JSON.stringify(value);
    }
  }, {
    key: "type",
    get: function get() {
      return Cell.Types.String;
    }
  }, {
    key: "effectiveType",
    get: function get() {
      return Cell.Types.String;
    }
  }, {
    key: "address",
    get: function get() {
      return this.model.address;
    },
    set: function set(value) {
      this.model.address = value;
    }
  }]);

  return JSONValue;
}(); // Value is a place to hold common static Value type functions


var Value = {
  getType: function getType(value) {
    if (value === null || value === undefined) {
      return Cell.Types.Null;
    }

    if (value instanceof String || typeof value === 'string') {
      return Cell.Types.String;
    }

    if (typeof value === 'number') {
      return Cell.Types.Number;
    }

    if (typeof value === 'boolean') {
      return Cell.Types.Boolean;
    }

    if (value instanceof Date) {
      return Cell.Types.Date;
    }

    if (value.text && value.hyperlink) {
      return Cell.Types.Hyperlink;
    }

    if (value.formula || value.sharedFormula) {
      return Cell.Types.Formula;
    }

    if (value.richText) {
      return Cell.Types.RichText;
    }

    if (value.sharedString) {
      return Cell.Types.SharedString;
    }

    if (value.error) {
      return Cell.Types.Error;
    }

    return Cell.Types.JSON;
  },
  // map valueType to constructor
  types: [{
    t: Cell.Types.Null,
    f: NullValue
  }, {
    t: Cell.Types.Number,
    f: NumberValue
  }, {
    t: Cell.Types.String,
    f: StringValue
  }, {
    t: Cell.Types.Date,
    f: DateValue
  }, {
    t: Cell.Types.Hyperlink,
    f: HyperlinkValue
  }, {
    t: Cell.Types.Formula,
    f: FormulaValue
  }, {
    t: Cell.Types.Merge,
    f: MergeValue
  }, {
    t: Cell.Types.JSON,
    f: JSONValue
  }, {
    t: Cell.Types.SharedString,
    f: SharedStringValue
  }, {
    t: Cell.Types.RichText,
    f: RichTextValue
  }, {
    t: Cell.Types.Boolean,
    f: BooleanValue
  }, {
    t: Cell.Types.Error,
    f: ErrorValue
  }].reduce(function (p, t) {
    p[t.t] = t.f;
    return p;
  }, []),
  create: function create(type, cell, value) {
    var T = this.types[type];

    if (!T) {
      throw new Error("Could not create Value of type ".concat(type));
    }

    return new T(cell, value);
  }
};
module.exports = Cell;


},{"../utils/col-cache":17,"../utils/shared-formula":19,"../utils/under-dash":22,"./enums":7,"./note":9}],4:[function(require,module,exports){
'use strict';

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var _ = require('../utils/under-dash');

var Enums = require('./enums');

var colCache = require('../utils/col-cache'); // Column defines the column properties for 1 column.
// This includes header rows, widths, key, (style), etc.
// Worksheet will condense the columns as appropriate during serialization


var Column =
/*#__PURE__*/
function () {
  function Column(worksheet, number, defn) {
    _classCallCheck(this, Column);

    this._worksheet = worksheet;
    this._number = number;

    if (defn !== false) {
      // sometimes defn will follow
      this.defn = defn;
    }
  }

  _createClass(Column, [{
    key: "toString",
    value: function toString() {
      return JSON.stringify({
        key: this.key,
        width: this.width,
        headers: this.headers.length ? this.headers : undefined
      });
    }
  }, {
    key: "equivalentTo",
    value: function equivalentTo(other) {
      return this.width === other.width && this.hidden === other.hidden && this.outlineLevel === other.outlineLevel && _.isEqual(this.style, other.style);
    }
  }, {
    key: "eachCell",
    value: function eachCell(options, iteratee) {
      var colNumber = this.number;

      if (!iteratee) {
        iteratee = options;
        options = null;
      }

      this._worksheet.eachRow(options, function (row, rowNumber) {
        iteratee(row.getCell(colNumber), rowNumber);
      });
    }
  }, {
    key: "_applyStyle",
    // =========================================================================
    // styles
    value: function _applyStyle(name, value) {
      this.style[name] = value;
      this.eachCell(function (cell) {
        cell[name] = value;
      });
      return value;
    }
  }, {
    key: "number",
    get: function get() {
      return this._number;
    }
  }, {
    key: "worksheet",
    get: function get() {
      return this._worksheet;
    }
  }, {
    key: "letter",
    get: function get() {
      return colCache.n2l(this._number);
    }
  }, {
    key: "isCustomWidth",
    get: function get() {
      return this.width !== undefined && this.width !== 8;
    }
  }, {
    key: "defn",
    get: function get() {
      return {
        header: this._header,
        key: this.key,
        width: this.width,
        style: this.style,
        hidden: this.hidden,
        outlineLevel: this.outlineLevel
      };
    },
    set: function set(value) {
      if (value) {
        this.key = value.key;
        this.width = value.width;
        this.outlineLevel = value.outlineLevel;

        if (value.style) {
          this.style = value.style;
        } else {
          this.style = {};
        } // headers must be set after style


        this.header = value.header;
        this._hidden = !!value.hidden;
      } else {
        delete this._header;
        delete this._key;
        delete this.width;
        this.style = {};
        this.outlineLevel = 0;
      }
    }
  }, {
    key: "headers",
    get: function get() {
      return this._header && this._header instanceof Array ? this._header : [this._header];
    }
  }, {
    key: "header",
    get: function get() {
      return this._header;
    },
    set: function set(value) {
      var _this = this;

      if (value !== undefined) {
        this._header = value;
        this.headers.forEach(function (text, index) {
          _this._worksheet.getCell(index + 1, _this.number).value = text;
        });
      } else {
        this._header = undefined;
      }
    }
  }, {
    key: "key",
    get: function get() {
      return this._key;
    },
    set: function set(value) {
      var column = this._key && this._worksheet.getColumnKey(this._key);

      if (column === this) {
        this._worksheet.deleteColumnKey(this._key);
      }

      this._key = value;

      if (value) {
        this._worksheet.setColumnKey(this._key, this);
      }
    }
  }, {
    key: "hidden",
    get: function get() {
      return !!this._hidden;
    },
    set: function set(value) {
      this._hidden = value;
    }
  }, {
    key: "outlineLevel",
    get: function get() {
      return this._outlineLevel || 0;
    },
    set: function set(value) {
      this._outlineLevel = value;
    }
  }, {
    key: "collapsed",
    get: function get() {
      return !!(this._outlineLevel && this._outlineLevel >= this._worksheet.properties.outlineLevelCol);
    }
  }, {
    key: "isDefault",
    get: function get() {
      if (this.isCustomWidth) {
        return false;
      }

      if (this.hidden) {
        return false;
      }

      if (this.outlineLevel) {
        return false;
      }

      var s = this.style;

      if (s && (s.font || s.numFmt || s.alignment || s.border || s.fill || s.protection)) {
        return false;
      }

      return true;
    }
  }, {
    key: "headerCount",
    get: function get() {
      return this.headers.length;
    }
  }, {
    key: "values",
    get: function get() {
      var v = [];
      this.eachCell(function (cell, rowNumber) {
        if (cell && cell.type !== Enums.ValueType.Null) {
          v[rowNumber] = cell.value;
        }
      });
      return v;
    },
    set: function set(v) {
      var _this2 = this;

      if (!v) {
        return;
      }

      var colNumber = this.number;
      var offset = 0;

      if (v.hasOwnProperty('0')) {
        // assume contiguous array, start at row 1
        offset = 1;
      }

      v.forEach(function (value, index) {
        _this2._worksheet.getCell(index + offset, colNumber).value = value;
      });
    }
  }, {
    key: "numFmt",
    get: function get() {
      return this.style.numFmt;
    },
    set: function set(value) {
      this._applyStyle('numFmt', value);
    }
  }, {
    key: "font",
    get: function get() {
      return this.style.font;
    },
    set: function set(value) {
      this._applyStyle('font', value);
    }
  }, {
    key: "alignment",
    get: function get() {
      return this.style.alignment;
    },
    set: function set(value) {
      this._applyStyle('alignment', value);
    }
  }, {
    key: "protection",
    get: function get() {
      return this.style.protection;
    },
    set: function set(value) {
      this._applyStyle('protection', value);
    }
  }, {
    key: "border",
    get: function get() {
      return this.style.border;
    },
    set: function set(value) {
      this._applyStyle('border', value);
    }
  }, {
    key: "fill",
    get: function get() {
      return this.style.fill;
    },
    set: function set(value) {
      this._applyStyle('fill', value);
    } // =============================================================================
    // static functions

  }], [{
    key: "toModel",
    value: function toModel(columns) {
      // Convert array of Column into compressed list cols
      var cols = [];
      var col = null;

      if (columns) {
        columns.forEach(function (column, index) {
          if (column.isDefault) {
            if (col) {
              col = null;
            }
          } else if (!col || !column.equivalentTo(col)) {
            col = {
              min: index + 1,
              max: index + 1,
              width: column.width,
              style: column.style,
              isCustomWidth: column.isCustomWidth,
              hidden: column.hidden,
              outlineLevel: column.outlineLevel,
              collapsed: column.collapsed
            };
            cols.push(col);
          } else {
            col.max = index + 1;
          }
        });
      }

      return cols.length ? cols : undefined;
    }
  }, {
    key: "fromModel",
    value: function fromModel(worksheet, cols) {
      cols = cols || [];
      var columns = [];
      var count = 1;
      var index = 0;

      while (index < cols.length) {
        var col = cols[index++];

        while (count < col.min) {
          columns.push(new Column(worksheet, count++));
        }

        while (count <= col.max) {
          columns.push(new Column(worksheet, count++, col));
        }
      }

      return columns.length ? columns : null;
    }
  }]);

  return Column;
}();

module.exports = Column;


},{"../utils/col-cache":17,"../utils/under-dash":22,"./enums":7}],5:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var DataValidations =
/*#__PURE__*/
function () {
  function DataValidations(model) {
    _classCallCheck(this, DataValidations);

    this.model = model || {};
  }

  _createClass(DataValidations, [{
    key: "add",
    value: function add(address, validation) {
      return this.model[address] = validation;
    }
  }, {
    key: "find",
    value: function find(address) {
      return this.model[address];
    }
  }, {
    key: "remove",
    value: function remove(address) {
      this.model[address] = undefined;
    }
  }]);

  return DataValidations;
}();

module.exports = DataValidations;


},{}],6:[function(require,module,exports){
'use strict';

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var _ = require('../utils/under-dash');

var colCache = require('../utils/col-cache');

var CellMatrix = require('../utils/cell-matrix');

var Range = require('./range');

var rangeRegexp = /[$](\w+)[$](\d+)(:[$](\w+)[$](\d+))?/;

var DefinedNames =
/*#__PURE__*/
function () {
  function DefinedNames() {
    _classCallCheck(this, DefinedNames);

    this.matrixMap = {};
  }

  _createClass(DefinedNames, [{
    key: "getMatrix",
    value: function getMatrix(name) {
      var matrix = this.matrixMap[name] || (this.matrixMap[name] = new CellMatrix());
      return matrix;
    } // add a name to a cell. locStr in the form SheetName!$col$row or SheetName!$c1$r1:$c2:$r2

  }, {
    key: "add",
    value: function add(locStr, name) {
      var location = colCache.decodeEx(locStr);
      this.addEx(location, name);
    }
  }, {
    key: "addEx",
    value: function addEx(location, name) {
      var matrix = this.getMatrix(name);

      if (location.top) {
        for (var col = location.left; col <= location.right; col++) {
          for (var row = location.top; row <= location.bottom; row++) {
            var address = {
              sheetName: location.sheetName,
              address: colCache.n2l(col) + row,
              row: row,
              col: col
            };
            matrix.addCellEx(address);
          }
        }
      } else {
        matrix.addCellEx(location);
      }
    }
  }, {
    key: "remove",
    value: function remove(locStr, name) {
      var location = colCache.decodeEx(locStr);
      this.removeEx(location, name);
    }
  }, {
    key: "removeEx",
    value: function removeEx(location, name) {
      var matrix = this.getMatrix(name);
      matrix.removeCellEx(location);
    }
  }, {
    key: "removeAllNames",
    value: function removeAllNames(location) {
      _.each(this.matrixMap, function (matrix) {
        matrix.removeCellEx(location);
      });
    }
  }, {
    key: "forEach",
    value: function forEach(callback) {
      _.each(this.matrixMap, function (matrix, name) {
        matrix.forEach(function (cell) {
          callback(name, cell);
        });
      });
    } // get all the names of a cell

  }, {
    key: "getNames",
    value: function getNames(addressStr) {
      return this.getNamesEx(colCache.decodeEx(addressStr));
    }
  }, {
    key: "getNamesEx",
    value: function getNamesEx(address) {
      return _.map(this.matrixMap, function (matrix, name) {
        return matrix.findCellEx(address) && name;
      }).filter(Boolean);
    }
  }, {
    key: "_explore",
    value: function _explore(matrix, cell) {
      cell.mark = false;
      var sheetName = cell.sheetName;
      var range = new Range(cell.row, cell.col, cell.row, cell.col, sheetName);
      var x;
      var y; // grow vertical - only one col to worry about

      function vGrow(yy, edge) {
        var c = matrix.findCellAt(sheetName, yy, cell.col);

        if (!c || !c.mark) {
          return false;
        }

        range[edge] = yy;
        c.mark = false;
        return true;
      }

      for (y = cell.row - 1; vGrow(y, 'top'); y--) {
        ;
      }

      for (y = cell.row + 1; vGrow(y, 'bottom'); y++) {
        ;
      } // grow horizontal - ensure all rows can grow


      function hGrow(xx, edge) {
        var cells = [];

        for (y = range.top; y <= range.bottom; y++) {
          var c = matrix.findCellAt(sheetName, y, xx);

          if (c && c.mark) {
            cells.push(c);
          } else {
            return false;
          }
        }

        range[edge] = xx;

        for (var i = 0; i < cells.length; i++) {
          cells[i].mark = false;
        }

        return true;
      }

      for (x = cell.col - 1; hGrow(x, 'left'); x--) {
        ;
      }

      for (x = cell.col + 1; hGrow(x, 'right'); x++) {
        ;
      }

      return range;
    }
  }, {
    key: "getRanges",
    value: function getRanges(name, matrix) {
      var _this = this;

      matrix = matrix || this.matrixMap[name];

      if (!matrix) {
        return {
          name: name,
          ranges: []
        };
      } // mark and sweep!


      matrix.forEach(function (cell) {
        cell.mark = true;
      });
      var ranges = matrix.map(function (cell) {
        return cell.mark && _this._explore(matrix, cell);
      }).filter(Boolean).map(function (range) {
        return range.$shortRange;
      });
      return {
        name: name,
        ranges: ranges
      };
    }
  }, {
    key: "normaliseMatrix",
    value: function normaliseMatrix(matrix, sheetName) {
      // some of the cells might have shifted on specified sheet
      // need to reassign rows, cols
      matrix.forEachInSheet(sheetName, function (cell, row, col) {
        if (cell) {
          if (cell.row !== row || cell.col !== col) {
            cell.row = row;
            cell.col = col;
            cell.address = colCache.n2l(col) + row;
          }
        }
      });
    }
  }, {
    key: "spliceRows",
    value: function spliceRows(sheetName, start, numDelete, numInsert) {
      var _this2 = this;

      _.each(this.matrixMap, function (matrix) {
        matrix.spliceRows(sheetName, start, numDelete, numInsert);

        _this2.normaliseMatrix(matrix, sheetName);
      });
    }
  }, {
    key: "spliceColumns",
    value: function spliceColumns(sheetName, start, numDelete, numInsert) {
      var _this3 = this;

      _.each(this.matrixMap, function (matrix) {
        matrix.spliceColumns(sheetName, start, numDelete, numInsert);

        _this3.normaliseMatrix(matrix, sheetName);
      });
    }
  }, {
    key: "model",
    get: function get() {
      var _this4 = this;

      // To get names per cell - just iterate over all names finding cells if they exist
      return _.map(this.matrixMap, function (matrix, name) {
        return _this4.getRanges(name, matrix);
      }).filter(function (definedName) {
        return definedName.ranges.length;
      });
    },
    set: function set(value) {
      // value is [ { name, ranges }, ... ]
      var matrixMap = this.matrixMap = {};
      value.forEach(function (definedName) {
        var matrix = matrixMap[definedName.name] = new CellMatrix();
        definedName.ranges.forEach(function (rangeStr) {
          if (rangeRegexp.test(rangeStr.split('!').pop() || '')) {
            matrix.addCell(rangeStr);
          }
        });
      });
    }
  }]);

  return DefinedNames;
}();

module.exports = DefinedNames;


},{"../utils/cell-matrix":16,"../utils/col-cache":17,"../utils/under-dash":22,"./range":10}],7:[function(require,module,exports){
'use strict';

module.exports = {
  ValueType: {
    Null: 0,
    Merge: 1,
    Number: 2,
    String: 3,
    Date: 4,
    Hyperlink: 5,
    Formula: 6,
    SharedString: 7,
    RichText: 8,
    Boolean: 9,
    Error: 10
  },
  FormulaType: {
    None: 0,
    Master: 1,
    Shared: 2
  },
  RelationshipType: {
    None: 0,
    OfficeDocument: 1,
    Worksheet: 2,
    CalcChain: 3,
    SharedStrings: 4,
    Styles: 5,
    Theme: 6,
    Hyperlink: 7
  },
  DocumentType: {
    Xlsx: 1
  },
  ReadingOrder: {
    LeftToRight: 1,
    RightToLeft: 2
  },
  ErrorValue: {
    NotApplicable: '#N/A',
    Ref: '#REF!',
    Name: '#NAME?',
    DivZero: '#DIV/0!',
    Null: '#NULL!',
    Value: '#VALUE!',
    Num: '#NUM!'
  }
};


},{}],8:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var colCache = require('../utils/col-cache');

var Anchor = require('./anchor');

var Image =
/*#__PURE__*/
function () {
  function Image(worksheet, model) {
    _classCallCheck(this, Image);

    this.worksheet = worksheet;
    this.model = model;
  }

  _createClass(Image, [{
    key: "model",
    get: function get() {
      switch (this.type) {
        case 'background':
          return {
            type: this.type,
            imageId: this.imageId
          };

        case 'image':
          return {
            type: this.type,
            imageId: this.imageId,
            range: {
              tl: this.range.tl.model,
              br: this.range.br && this.range.br.model,
              ext: this.range.ext
            }
          };

        default:
          throw new Error('Invalid Image Type');
      }
    },
    set: function set(_ref) {
      var type = _ref.type,
          imageId = _ref.imageId,
          range = _ref.range;
      this.type = type;
      this.imageId = imageId;

      if (type === 'image') {
        if (typeof range === 'string') {
          var decoded = colCache.decode(range);
          this.range = {
            tl: new Anchor(this.worksheet, {
              col: decoded.left,
              row: decoded.top
            }, -1),
            br: new Anchor(this.worksheet, {
              col: decoded.right,
              row: decoded.bottom
            }, 0),
            editAs: 'oneCell'
          };
        } else {
          this.range = {
            tl: new Anchor(this.worksheet, range.tl, 0),
            br: range.br && new Anchor(this.worksheet, range.br, 0),
            ext: range.ext,
            editAs: range.editAs
          };
        }
      }
    }
  }]);

  return Image;
}();

module.exports = Image;


},{"../utils/col-cache":17,"./anchor":2}],9:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var Note =
/*#__PURE__*/
function () {
  function Note(note) {
    _classCallCheck(this, Note);

    this.note = note;
  }

  _createClass(Note, [{
    key: "model",
    get: function get() {
      switch (_typeof(this.note)) {
        case 'string':
          return {
            type: 'note',
            note: {
              texts: [{
                text: this.note
              }]
            }
          };

        default:
          return {
            type: 'note',
            note: this.note
          };
      }
    },
    set: function set(value) {
      // convenience - simplify unstyled notes
      var note = value.note;
      var texts = note.texts;

      if (texts.length === 1 && Object.keys(texts[0]).length === 1) {
        this.note = texts[0].text;
      } else {
        this.note = note;
      }
    }
  }], [{
    key: "fromModel",
    value: function fromModel(model) {
      var note = new Note();
      note.model = model;
      return note;
    }
  }]);

  return Note;
}();

module.exports = Note;


},{}],10:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var colCache = require('./../utils/col-cache'); // used by worksheet to calculate sheet dimensions


var Range =
/*#__PURE__*/
function () {
  function Range() {
    _classCallCheck(this, Range);

    this.decode(arguments);
  }

  _createClass(Range, [{
    key: "setTLBR",
    value: function setTLBR(t, l, b, r, s) {
      if (arguments.length < 4) {
        // setTLBR(tl, br, s)
        var tl = colCache.decodeAddress(t);
        var br = colCache.decodeAddress(l);
        this.model = {
          top: Math.min(tl.row, br.row),
          left: Math.min(tl.col, br.col),
          bottom: Math.max(tl.row, br.row),
          right: Math.max(tl.col, br.col),
          sheetName: b
        };
        this.setTLBR(tl.row, tl.col, br.row, br.col, s);
      } else {
        // setTLBR(t, l, b, r, s)
        this.model = {
          top: Math.min(t, b),
          left: Math.min(l, r),
          bottom: Math.max(t, b),
          right: Math.max(l, r),
          sheetName: s
        };
      }
    }
  }, {
    key: "decode",
    value: function decode(argv) {
      switch (argv.length) {
        case 5:
          // [t,l,b,r,s]
          this.setTLBR(argv[0], argv[1], argv[2], argv[3], argv[4]);
          break;

        case 4:
          // [t,l,b,r]
          this.setTLBR(argv[0], argv[1], argv[2], argv[3]);
          break;

        case 3:
          // [tl,br,s]
          this.setTLBR(argv[0], argv[1], argv[2]);
          break;

        case 2:
          // [tl,br]
          this.setTLBR(argv[0], argv[1]);
          break;

        case 1:
          {
            var value = argv[0];

            if (value instanceof Range) {
              // copy constructor
              this.model = {
                top: value.model.top,
                left: value.model.left,
                bottom: value.model.bottom,
                right: value.model.right,
                sheetName: value.sheetName
              };
            } else if (value instanceof Array) {
              // an arguments array
              this.decode(value);
            } else if (value.top && value.left && value.bottom && value.right) {
              // a model
              this.model = {
                top: value.top,
                left: value.left,
                bottom: value.bottom,
                right: value.right,
                sheetName: value.sheetName
              };
            } else {
              // [sheetName!]tl:br
              var tlbr = colCache.decodeEx(value);

              if (tlbr.top) {
                this.model = {
                  top: tlbr.top,
                  left: tlbr.left,
                  bottom: tlbr.bottom,
                  right: tlbr.right,
                  sheetName: tlbr.sheetName
                };
              } else {
                this.model = {
                  top: tlbr.row,
                  left: tlbr.col,
                  bottom: tlbr.row,
                  right: tlbr.col,
                  sheetName: tlbr.sheetName
                };
              }
            }

            break;
          }

        case 0:
          this.model = {
            top: 0,
            left: 0,
            bottom: 0,
            right: 0
          };
          break;

        default:
          throw new Error("Invalid number of arguments to _getDimensions() - ".concat(argv.length));
      }
    }
  }, {
    key: "expand",
    value: function expand(top, left, bottom, right) {
      if (!this.model.top || top < this.top) this.top = top;
      if (!this.model.left || left < this.left) this.left = left;
      if (!this.model.bottom || bottom > this.bottom) this.bottom = bottom;
      if (!this.model.right || right > this.right) this.right = right;
    }
  }, {
    key: "expandRow",
    value: function expandRow(row) {
      if (row) {
        var dimensions = row.dimensions,
            number = row.number;

        if (dimensions) {
          this.expand(number, dimensions.min, number, dimensions.max);
        }
      }
    }
  }, {
    key: "expandToAddress",
    value: function expandToAddress(addressStr) {
      var address = colCache.decodeEx(addressStr);
      this.expand(address.row, address.col, address.row, address.col);
    }
  }, {
    key: "toString",
    value: function toString() {
      return this.range;
    }
  }, {
    key: "intersects",
    value: function intersects(other) {
      if (other.sheetName && this.sheetName && other.sheetName !== this.sheetName) return false;
      if (other.bottom < this.top) return false;
      if (other.top > this.bottom) return false;
      if (other.right < this.left) return false;
      if (other.left > this.right) return false;
      return true;
    }
  }, {
    key: "contains",
    value: function contains(addressStr) {
      var address = colCache.decodeEx(addressStr);
      return this.containsEx(address);
    }
  }, {
    key: "containsEx",
    value: function containsEx(address) {
      if (address.sheetName && this.sheetName && address.sheetName !== this.sheetName) return false;
      return address.row >= this.top && address.row <= this.bottom && address.col >= this.left && address.col <= this.right;
    }
  }, {
    key: "forEachAddress",
    value: function forEachAddress(cb) {
      for (var col = this.left; col <= this.right; col++) {
        for (var row = this.top; row <= this.bottom; row++) {
          cb(colCache.encodeAddress(row, col), row, col);
        }
      }
    }
  }, {
    key: "top",
    get: function get() {
      return this.model.top || 1;
    },
    set: function set(value) {
      this.model.top = value;
    }
  }, {
    key: "left",
    get: function get() {
      return this.model.left || 1;
    },
    set: function set(value) {
      this.model.left = value;
    }
  }, {
    key: "bottom",
    get: function get() {
      return this.model.bottom || 1;
    },
    set: function set(value) {
      this.model.bottom = value;
    }
  }, {
    key: "right",
    get: function get() {
      return this.model.right || 1;
    },
    set: function set(value) {
      this.model.right = value;
    }
  }, {
    key: "sheetName",
    get: function get() {
      return this.model.sheetName;
    },
    set: function set(value) {
      this.model.sheetName = value;
    }
  }, {
    key: "_serialisedSheetName",
    get: function get() {
      var sheetName = this.model.sheetName;

      if (sheetName) {
        if (/^[a-zA-Z0-9]*$/.test(sheetName)) {
          return "".concat(sheetName, "!");
        }

        return "'".concat(sheetName, "'!");
      }

      return '';
    }
  }, {
    key: "tl",
    get: function get() {
      return colCache.n2l(this.left) + this.top;
    }
  }, {
    key: "$t$l",
    get: function get() {
      return "$".concat(colCache.n2l(this.left), "$").concat(this.top);
    }
  }, {
    key: "br",
    get: function get() {
      return colCache.n2l(this.right) + this.bottom;
    }
  }, {
    key: "$b$r",
    get: function get() {
      return "$".concat(colCache.n2l(this.right), "$").concat(this.bottom);
    }
  }, {
    key: "range",
    get: function get() {
      return "".concat(this._serialisedSheetName + this.tl, ":").concat(this.br);
    }
  }, {
    key: "$range",
    get: function get() {
      return "".concat(this._serialisedSheetName + this.$t$l, ":").concat(this.$b$r);
    }
  }, {
    key: "shortRange",
    get: function get() {
      return this.count > 1 ? this.range : this._serialisedSheetName + this.tl;
    }
  }, {
    key: "$shortRange",
    get: function get() {
      return this.count > 1 ? this.$range : this._serialisedSheetName + this.$t$l;
    }
  }, {
    key: "count",
    get: function get() {
      return (1 + this.bottom - this.top) * (1 + this.right - this.left);
    }
  }]);

  return Range;
}();

module.exports = Range;


},{"./../utils/col-cache":17}],11:[function(require,module,exports){
'use strict';

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var _ = require('../utils/under-dash');

var Enums = require('./enums');

var colCache = require('./../utils/col-cache');

var Cell = require('./cell');

var Row =
/*#__PURE__*/
function () {
  function Row(worksheet, number) {
    _classCallCheck(this, Row);

    this._worksheet = worksheet;
    this._number = number;
    this._cells = [];
    this.style = {};
    this.outlineLevel = 0;
  } // return the row number


  _createClass(Row, [{
    key: "commit",
    // Inform Streaming Writer that this row (and all rows before it) are complete
    // and ready to write. Has no effect on Worksheet document
    value: function commit() {
      this._worksheet._commitRow(this); // eslint-disable-line no-underscore-dangle

    } // helps GC by breaking cyclic references

  }, {
    key: "destroy",
    value: function destroy() {
      delete this._worksheet;
      delete this._cells;
      delete this.style;
    }
  }, {
    key: "findCell",
    value: function findCell(colNumber) {
      return this._cells[colNumber - 1];
    } // given {address, row, col}, find or create new cell

  }, {
    key: "getCellEx",
    value: function getCellEx(address) {
      var cell = this._cells[address.col - 1];

      if (!cell) {
        var column = this._worksheet.getColumn(address.col);

        cell = new Cell(this, column, address.address);
        this._cells[address.col - 1] = cell;
      }

      return cell;
    } // get cell by key, letter or column number

  }, {
    key: "getCell",
    value: function getCell(col) {
      if (typeof col === 'string') {
        // is it a key?
        var column = this._worksheet.getColumnKey(col);

        if (column) {
          col = column.number;
        } else {
          col = colCache.l2n(col);
        }
      }

      return this._cells[col - 1] || this.getCellEx({
        address: colCache.encodeAddress(this._number, col),
        row: this._number,
        col: col
      });
    } // remove cell(s) and shift all higher cells down by count

  }, {
    key: "splice",
    value: function splice(start, count) {
      var inserts = Array.prototype.slice.call(arguments, 2);
      var nKeep = start + count;
      var nExpand = inserts.length - count;
      var nEnd = this._cells.length;
      var i;
      var cSrc;
      var cDst;

      if (nExpand < 0) {
        // remove cells
        for (i = start + inserts.length; i <= nEnd; i++) {
          cDst = this._cells[i - 1];
          cSrc = this._cells[i - nExpand - 1];

          if (cSrc) {
            cDst = this.getCell(i);
            cDst.value = cSrc.value;
            cDst.style = cSrc.style;
          } else if (cDst) {
            cDst.value = null;
            cDst.style = {};
          }
        }
      } else if (nExpand > 0) {
        // insert new cells
        for (i = nEnd; i >= nKeep; i--) {
          cSrc = this._cells[i - 1];

          if (cSrc) {
            cDst = this.getCell(i + nExpand);
            cDst.value = cSrc.value;
            cDst.style = cSrc.style;
          } else {
            this._cells[i + nExpand - 1] = undefined;
          }
        }
      } // now add the new values


      for (i = 0; i < inserts.length; i++) {
        cDst = this.getCell(start + i);
        cDst.value = inserts[i];
        cDst.style = {};
      }
    } // Iterate over all non-null cells in this row

  }, {
    key: "eachCell",
    value: function eachCell(options, iteratee) {
      if (!iteratee) {
        iteratee = options;
        options = null;
      }

      if (options && options.includeEmpty) {
        var n = this._cells.length;

        for (var i = 1; i <= n; i++) {
          iteratee(this.getCell(i), i);
        }
      } else {
        this._cells.forEach(function (cell, index) {
          if (cell && cell.type !== Enums.ValueType.Null) {
            iteratee(cell, index + 1);
          }
        });
      }
    } // ===========================================================================
    // Page Breaks

  }, {
    key: "addPageBreak",
    value: function addPageBreak(lft, rght) {
      var ws = this._worksheet;
      var left = Math.max(0, lft - 1) || 0;
      var right = Math.max(0, rght - 1) || 16838;
      var pb = {
        id: this._number,
        max: right,
        man: 1
      };
      if (left) pb.min = left;
      ws.rowBreaks.push(pb);
    } // return a sparse array of cell values

  }, {
    key: "_applyStyle",
    // =========================================================================
    // styles
    value: function _applyStyle(name, value) {
      this.style[name] = value;

      this._cells.forEach(function (cell) {
        if (cell) {
          cell[name] = value;
        }
      });

      return value;
    }
  }, {
    key: "number",
    get: function get() {
      return this._number;
    }
  }, {
    key: "worksheet",
    get: function get() {
      return this._worksheet;
    }
  }, {
    key: "values",
    get: function get() {
      var values = [];

      this._cells.forEach(function (cell) {
        if (cell && cell.type !== Enums.ValueType.Null) {
          values[cell.col] = cell.value;
        }
      });

      return values;
    } // set the values by contiguous or sparse array, or by key'd object literal
    ,
    set: function set(value) {
      var _this = this;

      // this operation is not additive - any prior cells are removed
      this._cells = [];

      if (!value) {// empty row
      } else if (value instanceof Array) {
        var offset = 0;

        if (value.hasOwnProperty('0')) {
          // contiguous array - start at column 1
          offset = 1;
        }

        value.forEach(function (item, index) {
          if (item !== undefined) {
            _this.getCellEx({
              address: colCache.encodeAddress(_this._number, index + offset),
              row: _this._number,
              col: index + offset
            }).value = item;
          }
        });
      } else {
        // assume object with column keys
        this._worksheet.eachColumnKey(function (column, key) {
          if (value[key] !== undefined) {
            _this.getCellEx({
              address: colCache.encodeAddress(_this._number, column.number),
              row: _this._number,
              col: column.number
            }).value = value[key];
          }
        });
      }
    } // returns true if the row includes at least one cell with a value

  }, {
    key: "hasValues",
    get: function get() {
      return _.some(this._cells, function (cell) {
        return cell && cell.type !== Enums.ValueType.Null;
      });
    }
  }, {
    key: "cellCount",
    get: function get() {
      return this._cells.length;
    }
  }, {
    key: "actualCellCount",
    get: function get() {
      var count = 0;
      this.eachCell(function () {
        count++;
      });
      return count;
    } // get the min and max column number for the non-null cells in this row or null

  }, {
    key: "dimensions",
    get: function get() {
      var min = 0;
      var max = 0;

      this._cells.forEach(function (cell) {
        if (cell && cell.type !== Enums.ValueType.Null) {
          if (!min || min > cell.col) {
            min = cell.col;
          }

          if (max < cell.col) {
            max = cell.col;
          }
        }
      });

      return min > 0 ? {
        min: min,
        max: max
      } : null;
    }
  }, {
    key: "numFmt",
    get: function get() {
      return this.style.numFmt;
    },
    set: function set(value) {
      this._applyStyle('numFmt', value);
    }
  }, {
    key: "font",
    get: function get() {
      return this.style.font;
    },
    set: function set(value) {
      this._applyStyle('font', value);
    }
  }, {
    key: "alignment",
    get: function get() {
      return this.style.alignment;
    },
    set: function set(value) {
      this._applyStyle('alignment', value);
    }
  }, {
    key: "protection",
    get: function get() {
      return this.style.protection;
    },
    set: function set(value) {
      this._applyStyle('protection', value);
    }
  }, {
    key: "border",
    get: function get() {
      return this.style.border;
    },
    set: function set(value) {
      this._applyStyle('border', value);
    }
  }, {
    key: "fill",
    get: function get() {
      return this.style.fill;
    },
    set: function set(value) {
      this._applyStyle('fill', value);
    }
  }, {
    key: "hidden",
    get: function get() {
      return !!this._hidden;
    },
    set: function set(value) {
      this._hidden = value;
    }
  }, {
    key: "outlineLevel",
    get: function get() {
      return this._outlineLevel || 0;
    },
    set: function set(value) {
      this._outlineLevel = value;
    }
  }, {
    key: "collapsed",
    get: function get() {
      return !!(this._outlineLevel && this._outlineLevel >= this._worksheet.properties.outlineLevelRow);
    } // =========================================================================

  }, {
    key: "model",
    get: function get() {
      var cells = [];
      var min = 0;
      var max = 0;

      this._cells.forEach(function (cell) {
        if (cell) {
          var cellModel = cell.model;

          if (cellModel) {
            if (!min || min > cell.col) {
              min = cell.col;
            }

            if (max < cell.col) {
              max = cell.col;
            }

            cells.push(cellModel);
          }
        }
      });

      return this.height || cells.length ? {
        cells: cells,
        number: this.number,
        min: min,
        max: max,
        height: this.height,
        style: this.style,
        hidden: this.hidden,
        outlineLevel: this.outlineLevel,
        collapsed: this.collapsed
      } : null;
    },
    set: function set(value) {
      var _this2 = this;

      if (value.number !== this._number) {
        throw new Error('Invalid row number in model');
      }

      this._cells = [];
      var previousAddress;
      value.cells.forEach(function (cellModel) {
        switch (cellModel.type) {
          case Cell.Types.Merge:
            // special case - don't add this types
            break;

          default:
            {
              var address;

              if (cellModel.address) {
                address = colCache.decodeAddress(cellModel.address);
              } else if (previousAddress) {
                // This is a <c> element without an r attribute
                // Assume that it's the cell for the next column
                var _previousAddress = previousAddress,
                    row = _previousAddress.row;
                var col = previousAddress.col + 1;
                address = {
                  row: row,
                  col: col,
                  address: colCache.encodeAddress(row, col),
                  $col$row: "$".concat(colCache.n2l(col), "$").concat(row)
                };
              }

              previousAddress = address;

              var cell = _this2.getCellEx(address);

              cell.model = cellModel;
              break;
            }
        }
      });

      if (value.height) {
        this.height = value.height;
      } else {
        delete this.height;
      }

      this.hidden = value.hidden;
      this.outlineLevel = value.outlineLevel || 0;
      this.style = value.style && JSON.parse(JSON.stringify(value.style)) || {};
    }
  }]);

  return Row;
}();

module.exports = Row;


},{"../utils/under-dash":22,"./../utils/col-cache":17,"./cell":3,"./enums":7}],12:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

/* eslint-disable max-classes-per-file */
var colCache = require('./../utils/col-cache');

var Column =
/*#__PURE__*/
function () {
  // wrapper around column model, allowing access and manipulation
  function Column(table, column, index) {
    _classCallCheck(this, Column);

    this.table = table;
    this.column = column;
    this.index = index;
  }

  _createClass(Column, [{
    key: "_set",
    value: function _set(name, value) {
      this.table.cacheState();
      this.column[name] = value;
    }
    /* eslint-disable lines-between-class-members */

  }, {
    key: "name",
    get: function get() {
      return this.column.name;
    },
    set: function set(value) {
      this._set('name', value);
    }
  }, {
    key: "filterButton",
    get: function get() {
      return this.column.filterButton;
    },
    set: function set(value) {
      this.column.filterButton = value;
    }
  }, {
    key: "style",
    get: function get() {
      return this.column.style;
    },
    set: function set(value) {
      this.column.style = value;
    }
  }, {
    key: "totalsRowLabel",
    get: function get() {
      return this.column.totalsRowLabel;
    },
    set: function set(value) {
      this._set('totalsRowLabel', value);
    }
  }, {
    key: "totalsRowFunction",
    get: function get() {
      return this.column.totalsRowFunction;
    },
    set: function set(value) {
      this._set('totalsRowFunction', value);
    }
  }, {
    key: "totalsRowResult",
    get: function get() {
      return this.column.totalsRowResult;
    },
    set: function set(value) {
      this._set('totalsRowResult', value);
    }
  }, {
    key: "totalsRowFormula",
    get: function get() {
      return this.column.totalsRowFormula;
    },
    set: function set(value) {
      this._set('totalsRowFormula', value);
    }
    /* eslint-enable lines-between-class-members */

  }]);

  return Column;
}();

var Table =
/*#__PURE__*/
function () {
  function Table(worksheet, table) {
    _classCallCheck(this, Table);

    this.worksheet = worksheet;

    if (table) {
      this.table = table; // check things are ok first

      this.validate();
      this.store();
    }
  }

  _createClass(Table, [{
    key: "getFormula",
    value: function getFormula(column) {
      // get the correct formula to apply to the totals row
      switch (column.totalsRowFunction) {
        case 'none':
          return null;

        case 'average':
          return "SUBTOTAL(101,".concat(this.table.name, "[").concat(column.name, "])");

        case 'countNums':
          return "SUBTOTAL(102,".concat(this.table.name, "[").concat(column.name, "])");

        case 'count':
          return "SUBTOTAL(103,".concat(this.table.name, "[").concat(column.name, "])");

        case 'max':
          return "SUBTOTAL(104,".concat(this.table.name, "[").concat(column.name, "])");

        case 'min':
          return "SUBTOTAL(105,".concat(this.table.name, "[").concat(column.name, "])");

        case 'stdDev':
          return "SUBTOTAL(106,".concat(this.table.name, "[").concat(column.name, "])");

        case 'var':
          return "SUBTOTAL(107,".concat(this.table.name, "[").concat(column.name, "])");

        case 'sum':
          return "SUBTOTAL(109,".concat(this.table.name, "[").concat(column.name, "])");

        case 'custom':
          return column.totalsRowFormula;

        default:
          throw new Error("Invalid Totals Row Function: ".concat(column.totalsRowFunction));
      }
    }
  }, {
    key: "validate",
    value: function validate() {
      var _this = this;

      var table = this.table; // set defaults and check is valid

      var assign = function assign(o, name, dflt) {
        if (o[name] === undefined) {
          o[name] = dflt;
        }
      };

      assign(table, 'headerRow', true);
      assign(table, 'totalsRow', false);
      assign(table, 'style', {});
      assign(table.style, 'theme', 'TableStyleMedium2');
      assign(table.style, 'showFirstColumn', false);
      assign(table.style, 'showLastColumn', false);
      assign(table.style, 'showRowStripes', false);
      assign(table.style, 'showColumnStripes', false);

      var assert = function assert(test, message) {
        if (!test) {
          throw new Error(message);
        }
      };

      assert(table.ref, 'Table must have ref');
      assert(table.columns, 'Table must have column definitions');
      assert(table.rows, 'Table must have row definitions');
      table.tl = colCache.decodeAddress(table.ref);
      var _table$tl = table.tl,
          row = _table$tl.row,
          col = _table$tl.col;
      assert(row > 0, 'Table must be on valid row');
      assert(col > 0, 'Table must be on valid col');
      var width = this.width,
          filterHeight = this.filterHeight,
          tableHeight = this.tableHeight; // autoFilterRef is a range that includes optional headers only

      table.autoFilterRef = colCache.encode(row, col, row + filterHeight - 1, col + width - 1); // tableRef is a range that includes optional headers and totals

      table.tableRef = colCache.encode(row, col, row + tableHeight - 1, col + width - 1);
      table.columns.forEach(function (column, i) {
        assert(column.name, "Column ".concat(i, " must have a name"));

        if (i === 0) {
          assign(column, 'totalsRowLabel', 'Total');
        } else {
          assign(column, 'totalsRowFunction', 'none');
          column.totalsRowFormula = _this.getFormula(column);
        }
      });
    }
  }, {
    key: "store",
    value: function store() {
      var _this2 = this;

      // where the table needs to store table data, headers, footers in
      // the sheet...
      var assignStyle = function assignStyle(cell, style) {
        if (style) {
          Object.keys(style).forEach(function (key) {
            cell[key] = style[key];
          });
        }
      };

      var worksheet = this.worksheet,
          table = this.table;
      var _table$tl2 = table.tl,
          row = _table$tl2.row,
          col = _table$tl2.col;
      var count = 0;

      if (table.headerRow) {
        var r = worksheet.getRow(row + count++);
        table.columns.forEach(function (column, j) {
          var style = column.style,
              name = column.name;
          var cell = r.getCell(col + j);
          cell.value = name;
          assignStyle(cell, style);
        });
      }

      table.rows.forEach(function (data) {
        var r = worksheet.getRow(row + count++);
        data.forEach(function (value, j) {
          var cell = r.getCell(col + j);
          cell.value = value;
          assignStyle(cell, table.columns[j].style);
        });
      });

      if (table.totalsRow) {
        var _r = worksheet.getRow(row + count++);

        table.columns.forEach(function (column, j) {
          var cell = _r.getCell(col + j);

          if (j === 0) {
            cell.value = column.totalsRowLabel;
          } else {
            var formula = _this2.getFormula(column);

            if (formula) {
              cell.value = {
                formula: column.totalsRowFormula,
                result: column.totalsRowResult
              };
            } else {
              cell.value = null;
            }
          }

          assignStyle(cell, column.style);
        });
      }
    }
  }, {
    key: "load",
    value: function load(worksheet) {
      var _this3 = this;

      // where the table will read necessary features from a loaded sheet
      var table = this.table;
      var _table$tl3 = table.tl,
          row = _table$tl3.row,
          col = _table$tl3.col;
      var count = 0;

      if (table.headerRow) {
        var r = worksheet.getRow(row + count++);
        table.columns.forEach(function (column, j) {
          var cell = r.getCell(col + j);
          cell.value = column.name;
        });
      }

      table.rows.forEach(function (data) {
        var r = worksheet.getRow(row + count++);
        data.forEach(function (value, j) {
          var cell = r.getCell(col + j);
          cell.value = value;
        });
      });

      if (table.totalsRow) {
        var _r2 = worksheet.getRow(row + count++);

        table.columns.forEach(function (column, j) {
          var cell = _r2.getCell(col + j);

          if (j === 0) {
            cell.value = column.totalsRowLabel;
          } else {
            var formula = _this3.getFormula(column);

            if (formula) {
              cell.value = {
                formula: column.totalsRowFormula,
                result: column.totalsRowResult
              };
            }
          }
        });
      }
    }
  }, {
    key: "cacheState",
    // ================================================================
    // TODO: Mutating methods
    value: function cacheState() {
      if (!this._cache) {
        this._cache = {
          ref: this.ref,
          width: this.width,
          tableHeight: this.tableHeight
        };
      }
    }
  }, {
    key: "commit",
    value: function commit() {
      // changes may have been made that might have on-sheet effects
      if (!this._cache) {
        return;
      } // check things are ok first


      this.validate();
      var ref = colCache.decodeAddress(this._cache.ref);

      if (this.ref !== this._cache.ref) {
        // wipe out whole table footprint at previous location
        for (var i = 0; i < this._cache.tableHeight; i++) {
          var row = this.worksheet.getRow(ref.row + i);

          for (var j = 0; j < this._cache.width; j++) {
            var cell = row.getCell(ref.col + j);
            cell.value = null;
          }
        }
      } else {
        // clear out below table if it has shrunk
        for (var _i = this.tableHeight; _i < this._cache.tableHeight; _i++) {
          var _row = this.worksheet.getRow(ref.row + _i);

          for (var _j = 0; _j < this._cache.width; _j++) {
            var _cell = _row.getCell(ref.col + _j);

            _cell.value = null;
          }
        } // clear out to right of table if it has lost columns


        for (var _i2 = 0; _i2 < this.tableHeight; _i2++) {
          var _row2 = this.worksheet.getRow(ref.row + _i2);

          for (var _j2 = this.width; _j2 < this._cache.width; _j2++) {
            var _cell2 = _row2.getCell(ref.col + _j2);

            _cell2.value = null;
          }
        }
      }

      this.store();
    }
    /* eslint-disable no-unused-vars */

  }, {
    key: "addRow",
    value: function addRow(values, rowNumber) {
      // Add a row of data, either insert at rowNumber or append
      this.cacheState();

      if (rowNumber === undefined) {
        this.table.rows.push(values);
      } else {
        this.table.rows.splice(rowNumber, 0, values);
      }
    }
  }, {
    key: "removeRows",
    value: function removeRows(rowIndex) {
      var count = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;
      // Remove a rows of data
      this.cacheState();
      this.table.rows.splice(rowIndex, count);
    }
  }, {
    key: "getColumn",
    value: function getColumn(colIndex) {
      var column = this.table.columns[colIndex];
      return new Column(this, column, colIndex);
    }
  }, {
    key: "addColumn",
    value: function addColumn(column, values, colIndex) {
      // Add a new column, including column defn and values
      // Inserts at colNumber or adds to the right
      this.cacheState();

      if (colIndex === undefined) {
        this.table.columns.push(column);
        this.table.rows.forEach(function (row, i) {
          row.push(values[i]);
        });
      } else {
        this.table.columns.splice(colIndex, 0, column);
        this.table.rows.forEach(function (row, i) {
          row.splice(colIndex, 0, values[i]);
        });
      }
    }
  }, {
    key: "removeColumns",
    value: function removeColumns(colIndex) {
      var count = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;
      // Remove a column with data
      this.cacheState();
      this.table.columns.splice(colIndex, count);
      this.table.rows.forEach(function (row) {
        row.splice(colIndex, count);
      });
    }
  }, {
    key: "_assign",
    value: function _assign(target, prop, value) {
      this.cacheState();
      target[prop] = value;
    }
    /* eslint-disable lines-between-class-members */

  }, {
    key: "width",
    get: function get() {
      // width of the table
      return this.table.columns.length;
    }
  }, {
    key: "height",
    get: function get() {
      // height of the table data
      return this.table.rows.length;
    }
  }, {
    key: "filterHeight",
    get: function get() {
      // height of the table data plus optional header row
      return this.height + (this.table.headerRow ? 1 : 0);
    }
  }, {
    key: "tableHeight",
    get: function get() {
      // full height of the table on the sheet
      return this.filterHeight + (this.table.totalsRow ? 1 : 0);
    }
  }, {
    key: "model",
    get: function get() {
      return this.table;
    },
    set: function set(value) {
      this.table = value;
    }
  }, {
    key: "ref",
    get: function get() {
      return this.table.ref;
    },
    set: function set(value) {
      this._assign(this.table, 'ref', value);
    }
  }, {
    key: "name",
    get: function get() {
      return this.table.name;
    },
    set: function set(value) {
      this.table.name = value;
    }
  }, {
    key: "displayName",
    get: function get() {
      return this.table.displyName || this.table.name;
    }
  }, {
    key: "displayNamename",
    set: function set(value) {
      this.table.displayName = value;
    }
  }, {
    key: "headerRow",
    get: function get() {
      return this.table.headerRow;
    },
    set: function set(value) {
      this._assign(this.table, 'headerRow', value);
    }
  }, {
    key: "totalsRow",
    get: function get() {
      return this.table.totalsRow;
    },
    set: function set(value) {
      this._assign(this.table, 'totalsRow', value);
    }
  }, {
    key: "theme",
    get: function get() {
      return this.table.style.name;
    },
    set: function set(value) {
      this.table.style.name = value;
    }
  }, {
    key: "showFirstColumn",
    get: function get() {
      return this.table.style.showFirstColumn;
    },
    set: function set(value) {
      this.table.style.showFirstColumn = value;
    }
  }, {
    key: "showLastColumn",
    get: function get() {
      return this.table.style.showLastColumn;
    },
    set: function set(value) {
      this.table.style.showLastColumn = value;
    }
  }, {
    key: "showRowStripes",
    get: function get() {
      return this.table.style.showRowStripes;
    },
    set: function set(value) {
      this.table.style.showRowStripes = value;
    }
  }, {
    key: "showColumnStripes",
    get: function get() {
      return this.table.style.showColumnStripes;
    },
    set: function set(value) {
      this.table.style.showColumnStripes = value;
    }
    /* eslint-enable lines-between-class-members */

  }]);

  return Table;
}();

module.exports = Table;


},{"./../utils/col-cache":17}],13:[function(require,module,exports){
'use strict';

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var Worksheet = require('./worksheet');

var DefinedNames = require('./defined-names');

var XLSX = require('./../xlsx/xlsx');

var CSV = require('./../csv/csv'); // Workbook requirements
//  Load and Save from file and stream
//  Access/Add/Delete individual worksheets
//  Manage String table, Hyperlink table, etc.
//  Manage scaffolding for contained objects to write to/read from


var Workbook =
/*#__PURE__*/
function () {
  function Workbook() {
    _classCallCheck(this, Workbook);

    this.created = new Date();
    this.modified = this.created;
    this.properties = {};
    this.calcProperties = {};
    this._worksheets = [];
    this.views = [];
    this.media = [];
    this._definedNames = new DefinedNames();
  }

  _createClass(Workbook, [{
    key: "addWorksheet",
    value: function addWorksheet(name, options) {
      var id = this.nextId;

      if (name && name.length > 31) {
        // eslint-disable-next-line no-console
        console.warn("Worksheet name ".concat(name, " exceeds 31 chars. This will be truncated"));
      }

      name = (name || "sheet".concat(id)).substring(0, 31);

      if (this._worksheets.find(function (ws) {
        return ws && ws.name === name;
      })) {
        throw new Error("Worksheet name already exists: ".concat(name));
      } // if options is a color, call it tabColor (and signal deprecated message)


      if (options) {
        if (typeof options === 'string') {
          // eslint-disable-next-line no-console
          console.trace('tabColor argument is now deprecated. Please use workbook.addWorksheet(name, {properties: { tabColor: { argb: "rbg value" } }');
          options = {
            properties: {
              tabColor: {
                argb: options
              }
            }
          };
        } else if (options.argb || options.theme || options.indexed) {
          // eslint-disable-next-line no-console
          console.trace('tabColor argument is now deprecated. Please use workbook.addWorksheet(name, {properties: { tabColor: { ... } }');
          options = {
            properties: {
              tabColor: options
            }
          };
        }
      }

      var lastOrderNo = this._worksheets.reduce(function (acc, ws) {
        return (ws && ws.orderNo) > acc ? ws.orderNo : acc;
      }, 0);

      var worksheetOptions = Object.assign({}, options, {
        id: id,
        name: name,
        orderNo: lastOrderNo + 1,
        workbook: this
      });
      var worksheet = new Worksheet(worksheetOptions);
      this._worksheets[id] = worksheet;
      return worksheet;
    }
  }, {
    key: "removeWorksheetEx",
    value: function removeWorksheetEx(worksheet) {
      delete this._worksheets[worksheet.id];
    }
  }, {
    key: "removeWorksheet",
    value: function removeWorksheet(id) {
      var worksheet = this.getWorksheet(id);

      if (worksheet) {
        worksheet.destroy();
      }
    }
  }, {
    key: "getWorksheet",
    value: function getWorksheet(id) {
      if (id === undefined) {
        return this._worksheets.find(Boolean);
      }

      if (typeof id === 'number') {
        return this._worksheets[id];
      }

      if (typeof id === 'string') {
        return this._worksheets.find(function (worksheet) {
          return worksheet && worksheet.name === id;
        });
      }

      return undefined;
    }
  }, {
    key: "eachSheet",
    value: function eachSheet(iteratee) {
      this.worksheets.forEach(function (sheet) {
        iteratee(sheet, sheet.id);
      });
    }
  }, {
    key: "clearThemes",
    value: function clearThemes() {
      // Note: themes are not an exposed feature, meddle at your peril!
      this._themes = undefined;
    }
  }, {
    key: "addImage",
    value: function addImage(image) {
      // TODO:  validation?
      var id = this.media.length;
      this.media.push(Object.assign({}, image, {
        type: 'image'
      }));
      return id;
    }
  }, {
    key: "getImage",
    value: function getImage(id) {
      return this.media[id];
    }
  }, {
    key: "xlsx",
    get: function get() {
      if (!this._xlsx) this._xlsx = new XLSX(this);
      return this._xlsx;
    }
  }, {
    key: "csv",
    get: function get() {
      if (!this._csv) this._csv = new CSV(this);
      return this._csv;
    }
  }, {
    key: "nextId",
    get: function get() {
      // find the next unique spot to add worksheet
      for (var i = 1; i < this._worksheets.length; i++) {
        if (!this._worksheets[i]) {
          return i;
        }
      }

      return this._worksheets.length || 1;
    }
  }, {
    key: "worksheets",
    get: function get() {
      // return a clone of _worksheets
      return this._worksheets.slice(1).sort(function (a, b) {
        return a.orderNo - b.orderNo;
      }).filter(Boolean);
    }
  }, {
    key: "definedNames",
    get: function get() {
      return this._definedNames;
    }
  }, {
    key: "model",
    get: function get() {
      return {
        creator: this.creator || 'Unknown',
        lastModifiedBy: this.lastModifiedBy || 'Unknown',
        lastPrinted: this.lastPrinted,
        created: this.created,
        modified: this.modified,
        properties: this.properties,
        worksheets: this.worksheets.map(function (worksheet) {
          return worksheet.model;
        }),
        sheets: this.worksheets.map(function (ws) {
          return ws.model;
        }).filter(Boolean),
        definedNames: this._definedNames.model,
        views: this.views,
        company: this.company,
        manager: this.manager,
        title: this.title,
        subject: this.subject,
        keywords: this.keywords,
        category: this.category,
        description: this.description,
        language: this.language,
        revision: this.revision,
        contentStatus: this.contentStatus,
        themes: this._themes,
        media: this.media,
        calcProperties: this.calcProperties
      };
    },
    set: function set(value) {
      var _this = this;

      this.creator = value.creator;
      this.lastModifiedBy = value.lastModifiedBy;
      this.lastPrinted = value.lastPrinted;
      this.created = value.created;
      this.modified = value.modified;
      this.company = value.company;
      this.manager = value.manager;
      this.title = value.title;
      this.subject = value.subject;
      this.keywords = value.keywords;
      this.category = value.category;
      this.description = value.description;
      this.language = value.language;
      this.revision = value.revision;
      this.contentStatus = value.contentStatus;
      this.properties = value.properties;
      this.calcProperties = value.calcProperties;
      this._worksheets = [];
      value.worksheets.forEach(function (worksheetModel) {
        var id = worksheetModel.id,
            name = worksheetModel.name,
            state = worksheetModel.state;
        var orderNo = value.sheets && value.sheets.findIndex(function (ws) {
          return ws.id === id;
        });
        var worksheet = _this._worksheets[id] = new Worksheet({
          id: id,
          name: name,
          orderNo: orderNo,
          state: state,
          workbook: _this
        });
        worksheet.model = worksheetModel;
      });
      this._definedNames.model = value.definedNames;
      this.views = value.views;
      this._themes = value.themes;
      this.media = value.media || [];
    }
  }]);

  return Workbook;
}();

module.exports = Workbook;


},{"./../csv/csv":1,"./../xlsx/xlsx":119,"./defined-names":6,"./worksheet":14}],14:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var _ = require('../utils/under-dash');

var colCache = require('./../utils/col-cache');

var Range = require('./range');

var Row = require('./row');

var Column = require('./column');

var Enums = require('./enums');

var Image = require('./image');

var Table = require('./table');

var DataValidations = require('./data-validations');

var Encryptor = require('../utils/encryptor'); // Worksheet requirements
//  Operate as sheet inside workbook or standalone
//  Load and Save from file and stream
//  Access/Add/Delete individual cells
//  Manage column widths and row heights


var Worksheet =
/*#__PURE__*/
function () {
  function Worksheet(options) {
    _classCallCheck(this, Worksheet);

    options = options || {}; // in a workbook, each sheet will have a number

    this.id = options.id;
    this.orderNo = options.orderNo; // and a name

    this.name = options.name || "Sheet".concat(this.id); // add a state

    this.state = options.state || 'visible'; // rows allows access organised by row. Sparse array of arrays indexed by row-1, col
    // Note: _rows is zero based. Must subtract 1 to go from cell.row to index

    this._rows = []; // column definitions

    this._columns = null; // column keys (addRow convenience): key ==> this._collumns index

    this._keys = {}; // keep record of all merges

    this._merges = {}; // record of all row and column pageBreaks

    this.rowBreaks = [];
    this._workbook = options.workbook; // for tabColor, default row height, outline levels, etc

    this.properties = Object.assign({}, {
      defaultRowHeight: 15,
      dyDescent: 55,
      outlineLevelCol: 0,
      outlineLevelRow: 0
    }, options.properties); // for all things printing

    this.pageSetup = Object.assign({}, {
      margins: {
        left: 0.7,
        right: 0.7,
        top: 0.75,
        bottom: 0.75,
        header: 0.3,
        footer: 0.3
      },
      orientation: 'portrait',
      horizontalDpi: 4294967295,
      verticalDpi: 4294967295,
      fitToPage: !!(options.pageSetup && (options.pageSetup.fitToWidth || options.pageSetup.fitToHeight) && !options.pageSetup.scale),
      pageOrder: 'downThenOver',
      blackAndWhite: false,
      draft: false,
      cellComments: 'None',
      errors: 'displayed',
      scale: 100,
      fitToWidth: 1,
      fitToHeight: 1,
      paperSize: undefined,
      showRowColHeaders: false,
      showGridLines: false,
      firstPageNumber: undefined,
      horizontalCentered: false,
      verticalCentered: false,
      rowBreaks: null,
      colBreaks: null
    }, options.pageSetup);
    this.headerFooter = {
      differentFirst: false,
      differentOddEven: false,
      oddHeader: null,
      oddFooter: null,
      evenHeader: null,
      evenFooter: null,
      firstHeader: null,
      firstFooter: null
    };
    this.dataValidations = new DataValidations(); // for freezepanes, split, zoom, gridlines, etc

    this.views = options.views || [];
    this.autoFilter = options.autoFilter || null; // for images, etc

    this._media = []; // worksheet protection

    this.sheetProtection = null; // for tables

    this.tables = {};
    this.conditionalFormattings = [];
  }

  _createClass(Worksheet, [{
    key: "destroy",
    // when you're done with this worksheet, call this to remove from workbook
    value: function destroy() {
      this._workbook.removeWorksheetEx(this);
    } // Get the bounding range of the cells in this worksheet

  }, {
    key: "getColumnKey",
    value: function getColumnKey(key) {
      return this._keys[key];
    }
  }, {
    key: "setColumnKey",
    value: function setColumnKey(key, value) {
      this._keys[key] = value;
    }
  }, {
    key: "deleteColumnKey",
    value: function deleteColumnKey(key) {
      delete this._keys[key];
    }
  }, {
    key: "eachColumnKey",
    value: function eachColumnKey(f) {
      _.each(this._keys, f);
    } // get a single column by col number. If it doesn't exist, create it and any gaps before it

  }, {
    key: "getColumn",
    value: function getColumn(c) {
      if (typeof c === 'string') {
        // if it matches a key'd column, return that
        var col = this._keys[c];
        if (col) return col; // otherwise, assume letter

        c = colCache.l2n(c);
      }

      if (!this._columns) {
        this._columns = [];
      }

      if (c > this._columns.length) {
        var n = this._columns.length + 1;

        while (n <= c) {
          this._columns.push(new Column(this, n++));
        }
      }

      return this._columns[c - 1];
    }
  }, {
    key: "spliceColumns",
    value: function spliceColumns(start, count) {
      var _this = this;

      // each member of inserts is a column of data.
      var inserts = Array.prototype.slice.call(arguments, 2);
      var rows = this._rows;
      var nRows = rows.length;

      if (inserts.length > 0) {
        var _loop = function _loop(i) {
          var rowArguments = [start, count]; // eslint-disable-next-line no-loop-func

          inserts.forEach(function (insert) {
            rowArguments.push(insert[i] || null);
          });

          var row = _this.getRow(i + 1); // eslint-disable-next-line prefer-spread


          row.splice.apply(row, rowArguments);
        };

        // must iterate over all rows whether they exist yet or not
        for (var i = 0; i < nRows; i++) {
          _loop(i);
        }
      } else {
        // nothing to insert, so just splice all rows
        this._rows.forEach(function (r) {
          if (r) {
            r.splice(start, count);
          }
        });
      } // splice column definitions


      var nExpand = inserts.length - count;
      var nKeep = start + count;
      var nEnd = this._columns.length;

      if (nExpand < 0) {
        for (var _i = start + inserts.length; _i <= nEnd; _i++) {
          this.getColumn(_i).defn = this.getColumn(_i - nExpand).defn;
        }
      } else if (nExpand > 0) {
        for (var _i2 = nEnd; _i2 >= nKeep; _i2--) {
          this.getColumn(_i2 + nExpand).defn = this.getColumn(_i2).defn;
        }
      }

      for (var _i3 = start; _i3 < start + inserts.length; _i3++) {
        this.getColumn(_i3).defn = null;
      } // account for defined names


      this.workbook.definedNames.spliceColumns(this.name, start, count, inserts.length);
    }
  }, {
    key: "_commitRow",
    // =========================================================================
    // Rows
    value: function _commitRow() {// nop - allows streaming reader to fill a document
    }
  }, {
    key: "findRow",
    // find a row (if exists) by row number
    value: function findRow(r) {
      return this._rows[r - 1];
    }
  }, {
    key: "getRow",
    // get a row by row number.
    value: function getRow(r) {
      var row = this._rows[r - 1];

      if (!row) {
        row = this._rows[r - 1] = new Row(this, r);
      }

      return row;
    }
  }, {
    key: "addRow",
    value: function addRow(value) {
      var row = this.getRow(this._nextRow);
      row.values = value;
      return row;
    }
  }, {
    key: "addRows",
    value: function addRows(value) {
      var _this2 = this;

      value.forEach(function (row) {
        _this2.addRow(row);
      });
    }
  }, {
    key: "spliceRows",
    value: function spliceRows(start, count) {
      var _this3 = this;

      // same problem as row.splice, except worse.
      var inserts = Array.prototype.slice.call(arguments, 2);
      var nKeep = start + count;
      var nExpand = inserts.length - count;
      var nEnd = this._rows.length;
      var i;
      var rSrc;

      if (nExpand < 0) {
        // remove rows
        for (i = nKeep; i <= nEnd; i++) {
          rSrc = this._rows[i - 1];

          if (rSrc) {
            (function () {
              var rDst = _this3.getRow(i + nExpand);

              rDst.values = rSrc.values;
              rDst.style = rSrc.style; // eslint-disable-next-line no-loop-func

              rSrc.eachCell({
                includeEmpty: true
              }, function (cell, colNumber) {
                rDst.getCell(colNumber).style = cell.style;
              });
              _this3._rows[i - 1] = undefined;
            })();
          } else {
            this._rows[i + nExpand - 1] = undefined;
          }
        }
      } else if (nExpand > 0) {
        // insert new cells
        for (i = nEnd; i >= nKeep; i--) {
          rSrc = this._rows[i - 1];

          if (rSrc) {
            (function () {
              var rDst = _this3.getRow(i + nExpand);

              rDst.values = rSrc.values;
              rDst.style = rSrc.style; // eslint-disable-next-line no-loop-func

              rSrc.eachCell({
                includeEmpty: true
              }, function (cell, colNumber) {
                rDst.getCell(colNumber).style = cell.style;
              });
            })();
          } else {
            this._rows[i + nExpand - 1] = undefined;
          }
        }
      } // now copy over the new values


      for (i = 0; i < inserts.length; i++) {
        var rDst = this.getRow(start + i);
        rDst.style = {};
        rDst.values = inserts[i];
      } // account for defined names


      this.workbook.definedNames.spliceRows(this.name, start, count, inserts.length);
    } // iterate over every row in the worksheet, including maybe empty rows

  }, {
    key: "eachRow",
    value: function eachRow(options, iteratee) {
      if (!iteratee) {
        iteratee = options;
        options = undefined;
      }

      if (options && options.includeEmpty) {
        var n = this._rows.length;

        for (var i = 1; i <= n; i++) {
          iteratee(this.getRow(i), i);
        }
      } else {
        this._rows.forEach(function (row) {
          if (row && row.hasValues) {
            iteratee(row, row.number);
          }
        });
      }
    } // return all rows as sparse array

  }, {
    key: "getSheetValues",
    value: function getSheetValues() {
      var rows = [];

      this._rows.forEach(function (row) {
        if (row) {
          rows[row.number] = row.values;
        }
      });

      return rows;
    } // =========================================================================
    // Cells
    // returns the cell at [r,c] or address given by r. If not found, return undefined

  }, {
    key: "findCell",
    value: function findCell(r, c) {
      var address = colCache.getAddress(r, c);
      var row = this._rows[address.row - 1];
      return row ? row.findCell(address.col) : undefined;
    } // return the cell at [r,c] or address given by r. If not found, create a new one.

  }, {
    key: "getCell",
    value: function getCell(r, c) {
      var address = colCache.getAddress(r, c);
      var row = this.getRow(address.row);
      return row.getCellEx(address);
    } // =========================================================================
    // Merge
    // convert the range defined by ['tl:br'], [tl,br] or [t,l,b,r] into a single 'merged' cell

  }, {
    key: "mergeCells",
    value: function mergeCells() {
      var dimensions = new Range(Array.prototype.slice.call(arguments, 0)); // convert arguments into Array
      // check cells aren't already merged

      _.each(this._merges, function (merge) {
        if (merge.intersects(dimensions)) {
          throw new Error('Cannot merge already merged cells');
        }
      }); // apply merge


      var master = this.getCell(dimensions.top, dimensions.left);

      for (var i = dimensions.top; i <= dimensions.bottom; i++) {
        for (var j = dimensions.left; j <= dimensions.right; j++) {
          // merge all but the master cell
          if (i > dimensions.top || j > dimensions.left) {
            this.getCell(i, j).merge(master);
          }
        }
      } // index merge


      this._merges[master.address] = dimensions;
    }
  }, {
    key: "_unMergeMaster",
    value: function _unMergeMaster(master) {
      // master is always top left of a rectangle
      var merge = this._merges[master.address];

      if (merge) {
        for (var i = merge.top; i <= merge.bottom; i++) {
          for (var j = merge.left; j <= merge.right; j++) {
            this.getCell(i, j).unmerge();
          }
        }

        delete this._merges[master.address];
      }
    }
  }, {
    key: "unMergeCells",
    // scan the range defined by ['tl:br'], [tl,br] or [t,l,b,r] and if any cell is part of a merge,
    // un-merge the group. Note this function can affect multiple merges and merge-blocks are
    // atomic - either they're all merged or all un-merged.
    value: function unMergeCells() {
      var dimensions = new Range(Array.prototype.slice.call(arguments, 0)); // convert arguments into Array
      // find any cells in that range and unmerge them

      for (var i = dimensions.top; i <= dimensions.bottom; i++) {
        for (var j = dimensions.left; j <= dimensions.right; j++) {
          var cell = this.findCell(i, j);

          if (cell) {
            if (cell.type === Enums.ValueType.Merge) {
              // this cell merges to another master
              this._unMergeMaster(cell.master);
            } else if (this._merges[cell.address]) {
              // this cell is a master
              this._unMergeMaster(cell);
            }
          }
        }
      }
    } // ===========================================================================
    // Shared/Array Formula

  }, {
    key: "fillFormula",
    value: function fillFormula(range, formula, results) {
      var shareType = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 'shared';
      // Define formula for top-left cell and share to rest
      var decoded = colCache.decode(range);
      var top = decoded.top,
          left = decoded.left,
          bottom = decoded.bottom,
          right = decoded.right;
      var width = right - left + 1;
      var masterAddress = colCache.encodeAddress(top, left);
      var isShared = shareType === 'shared'; // work out result accessor

      var getResult;

      if (typeof results === 'function') {
        getResult = results;
      } else if (Array.isArray(results)) {
        if (Array.isArray(results[0])) {
          getResult = function getResult(row, col) {
            return results[row - top][col - left];
          };
        } else {
          getResult = function getResult(row, col) {
            return results[(row - top) * width + (col - left)];
          };
        }
      } else {
        getResult = function getResult() {
          return undefined;
        };
      }

      var first = true;

      for (var r = top; r <= bottom; r++) {
        for (var c = left; c <= right; c++) {
          if (first) {
            this.getCell(r, c).value = {
              shareType: shareType,
              formula: formula,
              ref: range,
              result: getResult(r, c)
            };
            first = false;
          } else {
            this.getCell(r, c).value = isShared ? {
              sharedFormula: masterAddress,
              result: getResult(r, c)
            } : getResult(r, c);
          }
        }
      }
    } // =========================================================================
    // Images

  }, {
    key: "addImage",
    value: function addImage(imageId, range) {
      var model = {
        type: 'image',
        imageId: imageId,
        range: range
      };

      this._media.push(new Image(this, model));
    }
  }, {
    key: "getImages",
    value: function getImages() {
      return this._media.filter(function (m) {
        return m.type === 'image';
      });
    }
  }, {
    key: "addBackgroundImage",
    value: function addBackgroundImage(imageId) {
      var model = {
        type: 'background',
        imageId: imageId
      };

      this._media.push(new Image(this, model));
    }
  }, {
    key: "getBackgroundImageId",
    value: function getBackgroundImageId() {
      var image = this._media.find(function (m) {
        return m.type === 'background';
      });

      return image && image.imageId;
    } // =========================================================================
    // Worksheet Protection

  }, {
    key: "protect",
    value: function protect(password, options) {
      var _this4 = this;

      // TODO: make this function truly async
      // perhaps marshal to worker thread or something
      return new Promise(function (resolve) {
        _this4.sheetProtection = {
          sheet: true
        };

        if (password) {
          _this4.sheetProtection.algorithmName = 'SHA-512';
          _this4.sheetProtection.saltValue = Encryptor.randomBytes(16).toString('base64');
          _this4.sheetProtection.spinCount = 100000;
          _this4.sheetProtection.hashValue = Encryptor.convertPasswordToHash(password, 'SHA512', _this4.sheetProtection.saltValue, _this4.sheetProtection.spinCount);
        }

        if (options) {
          _this4.sheetProtection = Object.assign(_this4.sheetProtection, options);
        }

        resolve();
      });
    }
  }, {
    key: "unprotect",
    value: function unprotect() {
      this.sheetProtection = null;
    } // =========================================================================
    // Tables

  }, {
    key: "addTable",
    value: function addTable(model) {
      var table = new Table(this, model);
      this.tables[model.name] = table;
      return table;
    }
  }, {
    key: "getTable",
    value: function getTable(name) {
      return this.tables[name];
    }
  }, {
    key: "removeTable",
    value: function removeTable(name) {
      delete this.tables[name];
    }
  }, {
    key: "getTables",
    value: function getTables() {
      return Object.values(this.tables);
    } // ===========================================================================
    // Conditional Formatting

  }, {
    key: "addConditionalFormatting",
    value: function addConditionalFormatting(cf) {
      this.conditionalFormattings.push(cf);
    }
  }, {
    key: "removeConditionalFormatting",
    value: function removeConditionalFormatting(filter) {
      if (typeof filter === 'number') {
        this.conditionalFormattings.splice(filter, 1);
      } else if (filter instanceof Function) {
        this.conditionalFormattings = this.conditionalFormattings.filter(filter);
      } else {
        this.conditionalFormattings = [];
      }
    } // ===========================================================================
    // Deprecated

  }, {
    key: "_parseRows",
    value: function _parseRows(model) {
      var _this5 = this;

      this._rows = [];
      model.rows.forEach(function (rowModel) {
        var row = new Row(_this5, rowModel.number);
        _this5._rows[row.number - 1] = row;
        row.model = rowModel;
      });
    }
  }, {
    key: "_parseMergeCells",
    value: function _parseMergeCells(model) {
      var _this6 = this;

      _.each(model.mergeCells, function (merge) {
        _this6.mergeCells(merge);
      });
    }
  }, {
    key: "workbook",
    get: function get() {
      return this._workbook;
    }
  }, {
    key: "dimensions",
    get: function get() {
      var dimensions = new Range();

      this._rows.forEach(function (row) {
        if (row) {
          var rowDims = row.dimensions;

          if (rowDims) {
            dimensions.expand(row.number, rowDims.min, row.number, rowDims.max);
          }
        }
      });

      return dimensions;
    } // =========================================================================
    // Columns
    // get the current columns array.

  }, {
    key: "columns",
    get: function get() {
      return this._columns;
    } // set the columns from an array of column definitions.
    // Note: any headers defined will overwrite existing values.
    ,
    set: function set(value) {
      var _this7 = this;

      // calculate max header row count
      this._headerRowCount = value.reduce(function (pv, cv) {
        var headerCount = cv.header && 1 || cv.headers && cv.headers.length || 0;
        return Math.max(pv, headerCount);
      }, 0); // construct Column objects

      var count = 1;
      var columns = this._columns = [];
      value.forEach(function (defn) {
        var column = new Column(_this7, count++, false);
        columns.push(column);
        column.defn = defn;
      });
    }
  }, {
    key: "columnCount",
    get: function get() {
      var maxCount = 0;
      this.eachRow(function (row) {
        maxCount = Math.max(maxCount, row.cellCount);
      });
      return maxCount;
    }
  }, {
    key: "actualColumnCount",
    get: function get() {
      // performance nightmare - for each row, counts all the columns used
      var counts = [];
      var count = 0;
      this.eachRow(function (row) {
        row.eachCell(function (_ref) {
          var col = _ref.col;

          if (!counts[col]) {
            counts[col] = true;
            count++;
          }
        });
      });
      return count;
    }
  }, {
    key: "_lastRowNumber",
    get: function get() {
      // need to cope with results of splice
      var rows = this._rows;
      var n = rows.length;

      while (n > 0 && rows[n - 1] === undefined) {
        n--;
      }

      return n;
    }
  }, {
    key: "_nextRow",
    get: function get() {
      return this._lastRowNumber + 1;
    }
  }, {
    key: "lastRow",
    get: function get() {
      if (this._rows.length) {
        return this._rows[this._rows.length - 1];
      }

      return undefined;
    }
  }, {
    key: "rowCount",
    get: function get() {
      return this._lastRowNumber;
    }
  }, {
    key: "actualRowCount",
    get: function get() {
      // counts actual rows that have actual data
      var count = 0;
      this.eachRow(function () {
        count++;
      });
      return count;
    }
  }, {
    key: "hasMerges",
    get: function get() {
      // return true if this._merges has a merge object
      return _.some(this._merges, Boolean);
    }
  }, {
    key: "tabColor",
    get: function get() {
      // eslint-disable-next-line no-console
      console.trace('worksheet.tabColor property is now deprecated. Please use worksheet.properties.tabColor');
      return this.properties.tabColor;
    },
    set: function set(value) {
      // eslint-disable-next-line no-console
      console.trace('worksheet.tabColor property is now deprecated. Please use worksheet.properties.tabColor');
      this.properties.tabColor = value;
    } // ===========================================================================
    // Model

  }, {
    key: "model",
    get: function get() {
      var model = {
        id: this.id,
        name: this.name,
        dataValidations: this.dataValidations.model,
        properties: this.properties,
        state: this.state,
        pageSetup: this.pageSetup,
        headerFooter: this.headerFooter,
        rowBreaks: this.rowBreaks,
        views: this.views,
        autoFilter: this.autoFilter,
        media: this._media.map(function (medium) {
          return medium.model;
        }),
        sheetProtection: this.sheetProtection,
        tables: Object.values(this.tables).map(function (table) {
          return table.model;
        }),
        conditionalFormattings: this.conditionalFormattings
      }; // =================================================
      // columns

      model.cols = Column.toModel(this.columns); // ==========================================================
      // Rows

      var rows = model.rows = [];
      var dimensions = model.dimensions = new Range();

      this._rows.forEach(function (row) {
        var rowModel = row && row.model;

        if (rowModel) {
          dimensions.expand(rowModel.number, rowModel.min, rowModel.number, rowModel.max);
          rows.push(rowModel);
        }
      }); // ==========================================================
      // Merges


      model.merges = [];

      _.each(this._merges, function (merge) {
        model.merges.push(merge.range);
      });

      return model;
    },
    set: function set(value) {
      var _this8 = this;

      this.name = value.name;
      this._columns = Column.fromModel(this, value.cols);

      this._parseRows(value);

      this._parseMergeCells(value);

      this.dataValidations = new DataValidations(value.dataValidations);
      this.properties = value.properties;
      this.pageSetup = value.pageSetup;
      this.headerFooter = value.headerFooter;
      this.views = value.views;
      this.autoFilter = value.autoFilter;
      this._media = value.media.map(function (medium) {
        return new Image(_this8, medium);
      });
      this.sheetProtection = value.sheetProtection;
      this.tables = value.tables.reduce(function (tables, table) {
        var t = new Table();
        t.model = table;
        tables[table.name] = t;
        return tables;
      }, {});
      this.conditionalFormattings = value.conditionalFormattings;
    }
  }]);

  return Worksheet;
}();

module.exports = Worksheet;


},{"../utils/encryptor":18,"../utils/under-dash":22,"./../utils/col-cache":17,"./column":4,"./data-validations":5,"./enums":7,"./image":8,"./range":10,"./row":11,"./table":12}],15:[function(require,module,exports){
"use strict";

// this bundle is built without polyfill leaving apps the freedom to add their own
var ExcelJS = {
  Workbook: require('./doc/workbook')
}; // Object.assign mono-fill

var Enums = require('./doc/enums');

Object.keys(Enums).forEach(function (key) {
  ExcelJS[key] = Enums[key];
});
module.exports = ExcelJS;


},{"./doc/enums":7,"./doc/workbook":13}],16:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var _ = require('./under-dash');

var colCache = require('./col-cache');

var CellMatrix =
/*#__PURE__*/
function () {
  function CellMatrix(template) {
    _classCallCheck(this, CellMatrix);

    this.template = template;
    this.sheets = {};
  }

  _createClass(CellMatrix, [{
    key: "addCell",
    value: function addCell(addressStr) {
      this.addCellEx(colCache.decodeEx(addressStr));
    }
  }, {
    key: "getCell",
    value: function getCell(addressStr) {
      return this.findCellEx(colCache.decodeEx(addressStr), true);
    }
  }, {
    key: "findCell",
    value: function findCell(addressStr) {
      return this.findCellEx(colCache.decodeEx(addressStr), false);
    }
  }, {
    key: "findCellAt",
    value: function findCellAt(sheetName, rowNumber, colNumber) {
      var sheet = this.sheets[sheetName];
      var row = sheet && sheet[rowNumber];
      return row && row[colNumber];
    }
  }, {
    key: "addCellEx",
    value: function addCellEx(address) {
      if (address.top) {
        for (var row = address.top; row <= address.bottom; row++) {
          for (var col = address.left; col <= address.right; col++) {
            this.getCellAt(address.sheetName, row, col);
          }
        }
      } else {
        this.findCellEx(address, true);
      }
    }
  }, {
    key: "getCellEx",
    value: function getCellEx(address) {
      return this.findCellEx(address, true);
    }
  }, {
    key: "findCellEx",
    value: function findCellEx(address, create) {
      var sheet = this.findSheet(address, create);
      var row = this.findSheetRow(sheet, address, create);
      return this.findRowCell(row, address, create);
    }
  }, {
    key: "getCellAt",
    value: function getCellAt(sheetName, rowNumber, colNumber) {
      var sheet = this.sheets[sheetName] || (this.sheets[sheetName] = []);
      var row = sheet[rowNumber] || (sheet[rowNumber] = []);
      var cell = row[colNumber] || (row[colNumber] = {
        sheetName: sheetName,
        address: colCache.n2l(colNumber) + rowNumber,
        row: rowNumber,
        col: colNumber
      });
      return cell;
    }
  }, {
    key: "removeCellEx",
    value: function removeCellEx(address) {
      var sheet = this.findSheet(address);

      if (!sheet) {
        return;
      }

      var row = this.findSheetRow(sheet, address);

      if (!row) {
        return;
      }

      delete row[address.col];
    }
  }, {
    key: "forEachInSheet",
    value: function forEachInSheet(sheetName, callback) {
      var sheet = this.sheets[sheetName];

      if (sheet) {
        sheet.forEach(function (row, rowNumber) {
          if (row) {
            row.forEach(function (cell, colNumber) {
              if (cell) {
                callback(cell, rowNumber, colNumber);
              }
            });
          }
        });
      }
    }
  }, {
    key: "forEach",
    value: function forEach(callback) {
      var _this = this;

      _.each(this.sheets, function (sheet, sheetName) {
        _this.forEachInSheet(sheetName, callback);
      });
    }
  }, {
    key: "map",
    value: function map(callback) {
      var results = [];
      this.forEach(function (cell) {
        results.push(callback(cell));
      });
      return results;
    }
  }, {
    key: "findSheet",
    value: function findSheet(address, create) {
      var name = address.sheetName;

      if (this.sheets[name]) {
        return this.sheets[name];
      }

      if (create) {
        return this.sheets[name] = [];
      }

      return undefined;
    }
  }, {
    key: "findSheetRow",
    value: function findSheetRow(sheet, address, create) {
      var row = address.row;

      if (sheet && sheet[row]) {
        return sheet[row];
      }

      if (create) {
        return sheet[row] = [];
      }

      return undefined;
    }
  }, {
    key: "findRowCell",
    value: function findRowCell(row, address, create) {
      var col = address.col;

      if (row && row[col]) {
        return row[col];
      }

      if (create) {
        return row[col] = this.template ? Object.assign(address, JSON.parse(JSON.stringify(this.template))) : address;
      }

      return undefined;
    }
  }, {
    key: "spliceRows",
    value: function spliceRows(sheetName, start, numDelete, numInsert) {
      var sheet = this.sheets[sheetName];

      if (sheet) {
        var inserts = [];

        for (var i = 0; i < numInsert; i++) {
          inserts.push([]);
        }

        sheet.splice.apply(sheet, [start, numDelete].concat(inserts));
      }
    }
  }, {
    key: "spliceColumns",
    value: function spliceColumns(sheetName, start, numDelete, numInsert) {
      var sheet = this.sheets[sheetName];

      if (sheet) {
        var inserts = [];

        for (var i = 0; i < numInsert; i++) {
          inserts.push(null);
        }

        _.each(sheet, function (row) {
          row.splice.apply(row, [start, numDelete].concat(inserts));
        });
      }
    }
  }]);

  return CellMatrix;
}();

module.exports = CellMatrix;


},{"./col-cache":17,"./under-dash":22}],17:[function(require,module,exports){
"use strict";

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance"); }

function _iterableToArrayLimit(arr, i) { if (!(Symbol.iterator in Object(arr) || Object.prototype.toString.call(arr) === "[object Arguments]")) { return; } var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

// =========================================================================
// Column Letter to Number conversion
var colCache = {
  _dictionary: ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'],
  _l2n: {},
  _n2l: [],
  _level: function _level(n) {
    if (n <= 26) {
      return 1;
    }

    if (n <= 26 * 26) {
      return 2;
    }

    return 3;
  },
  _fill: function _fill(level) {
    var c;
    var v;
    var l1;
    var l2;
    var l3;
    var n = 1;

    if (level >= 1) {
      while (n <= 26) {
        c = this._dictionary[n - 1];
        this._n2l[n] = c;
        this._l2n[c] = n;
        n++;
      }
    }

    if (level >= 2) {
      while (n <= 26 + 26 * 26) {
        v = n - (26 + 1);
        l1 = v % 26;
        l2 = Math.floor(v / 26);
        c = this._dictionary[l2] + this._dictionary[l1];
        this._n2l[n] = c;
        this._l2n[c] = n;
        n++;
      }
    }

    if (level >= 3) {
      while (n <= 16384) {
        v = n - (26 * 26 + 26 + 1);
        l1 = v % 26;
        l2 = Math.floor(v / 26) % 26;
        l3 = Math.floor(v / (26 * 26));
        c = this._dictionary[l3] + this._dictionary[l2] + this._dictionary[l1];
        this._n2l[n] = c;
        this._l2n[c] = n;
        n++;
      }
    }
  },
  l2n: function l2n(l) {
    if (!this._l2n[l]) {
      this._fill(l.length);
    }

    if (!this._l2n[l]) {
      throw new Error("Out of bounds. Invalid column letter: ".concat(l));
    }

    return this._l2n[l];
  },
  n2l: function n2l(n) {
    if (n < 1 || n > 16384) {
      throw new Error("".concat(n, " is out of bounds. Excel supports columns from 1 to 16384"));
    }

    if (!this._n2l[n]) {
      this._fill(this._level(n));
    }

    return this._n2l[n];
  },
  // =========================================================================
  // Address processing
  _hash: {},
  // check if value looks like an address
  validateAddress: function validateAddress(value) {
    if (!value.match(/^[A-Z]+\d+$/)) {
      throw new Error("Invalid Address: ".concat(value));
    }

    return true;
  },
  // convert address string into structure
  decodeAddress: function decodeAddress(value) {
    var addr = this._hash[value];

    if (addr) {
      return addr;
    }

    var matchCol = value.match(/[A-Z]+/);
    var col;
    var colNumber;

    if (matchCol) {
      col = matchCol[0];
      colNumber = this.l2n(col);
    }

    var matchRow = value.match(/\d+/);
    var row;
    var rowNumber;

    if (matchRow) {
      row = matchRow[0];
      rowNumber = parseInt(row, 10);
    } // in case $row$col


    value = (col || '') + (row || '');
    var address = {
      address: value,
      col: colNumber,
      row: rowNumber,
      $col$row: "$".concat(col || '', "$").concat(row || '')
    }; // mem fix - cache only the tl 100x100 square

    if (colNumber <= 100 && rowNumber <= 100) {
      this._hash[value] = address;
      this._hash[address.$col$row] = address;
    }

    return address;
  },
  // convert r,c into structure (if only 1 arg, assume r is address string)
  getAddress: function getAddress(r, c) {
    if (c) {
      var address = this.n2l(c) + r;
      return this.decodeAddress(address);
    }

    return this.decodeAddress(r);
  },
  // convert [address], [tl:br] into address structures
  decode: function decode(value) {
    var parts = value.split(':');

    if (parts.length === 2) {
      var tl = this.decodeAddress(parts[0]);
      var br = this.decodeAddress(parts[1]);
      var result = {
        top: Math.min(tl.row, br.row),
        left: Math.min(tl.col, br.col),
        bottom: Math.max(tl.row, br.row),
        right: Math.max(tl.col, br.col)
      }; // reconstruct tl, br and dimensions

      result.tl = this.n2l(result.left) + result.top;
      result.br = this.n2l(result.right) + result.bottom;
      result.dimensions = "".concat(result.tl, ":").concat(result.br);
      return result;
    }

    return this.decodeAddress(value);
  },
  // convert [sheetName!][$]col[$]row[[$]col[$]row] into address or range structures
  decodeEx: function decodeEx(value) {
    var groups = value.match(/(?:(?:(?:'((?:[^']|'')*)')|([^'^ !]*))!)?(.*)/);
    var sheetName = groups[1] || groups[2]; // Qouted and unqouted groups

    var reference = groups[3]; // Remaining address

    var parts = reference.split(':');

    if (parts.length > 1) {
      var tl = this.decodeAddress(parts[0]);
      var br = this.decodeAddress(parts[1]);
      var top = Math.min(tl.row, br.row);
      var left = Math.min(tl.col, br.col);
      var bottom = Math.max(tl.row, br.row);
      var right = Math.max(tl.col, br.col);
      tl = this.n2l(left) + top;
      br = this.n2l(right) + bottom;
      return {
        top: top,
        left: left,
        bottom: bottom,
        right: right,
        sheetName: sheetName,
        tl: {
          address: tl,
          col: left,
          row: top,
          $col$row: "$".concat(this.n2l(left), "$").concat(top),
          sheetName: sheetName
        },
        br: {
          address: br,
          col: right,
          row: bottom,
          $col$row: "$".concat(this.n2l(right), "$").concat(bottom),
          sheetName: sheetName
        },
        dimensions: "".concat(tl, ":").concat(br)
      };
    }

    if (reference.startsWith('#')) {
      return sheetName ? {
        sheetName: sheetName,
        error: reference
      } : {
        error: reference
      };
    }

    var address = this.decodeAddress(reference);
    return sheetName ? _objectSpread({
      sheetName: sheetName
    }, address) : address;
  },
  // convert row,col into address string
  encodeAddress: function encodeAddress(row, col) {
    return colCache.n2l(col) + row;
  },
  // convert row,col into string address or t,l,b,r into range
  encode: function encode() {
    switch (arguments.length) {
      case 2:
        return colCache.encodeAddress(arguments[0], arguments[1]);

      case 4:
        return "".concat(colCache.encodeAddress(arguments[0], arguments[1]), ":").concat(colCache.encodeAddress(arguments[2], arguments[3]));

      default:
        throw new Error('Can only encode with 2 or 4 arguments');
    }
  },
  // return true if address is contained within range
  inRange: function inRange(range, address) {
    var _range = _slicedToArray(range, 5),
        left = _range[0],
        top = _range[1],
        right = _range[3],
        bottom = _range[4];

    var _address = _slicedToArray(address, 2),
        col = _address[0],
        row = _address[1];

    return col >= left && col <= right && row >= top && row <= bottom;
  }
};
module.exports = colCache;


},{}],18:[function(require,module,exports){
(function (Buffer){
'use strict';

var crypto = require('crypto');

var Encryptor = {
  /**
   * Calculate a hash of the concatenated buffers with the given algorithm.
   * @param {string} algorithm - The hash algorithm.
   * @returns {Buffer} The hash
   */
  hash: function hash(algorithm) {
    var hash = crypto.createHash(algorithm);

    for (var _len = arguments.length, buffers = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
      buffers[_key - 1] = arguments[_key];
    }

    hash.update(Buffer.concat(buffers));
    return hash.digest();
  },

  /**
   * Convert a password into an encryption key
   * @param {string} password - The password
   * @param {string} hashAlgorithm - The hash algoritm
   * @param {string} saltValue - The salt value
   * @param {number} spinCount - The spin count
   * @param {number} keyBits - The length of the key in bits
   * @param {Buffer} blockKey - The block key
   * @returns {Buffer} The encryption key
   */
  convertPasswordToHash: function convertPasswordToHash(password, hashAlgorithm, saltValue, spinCount) {
    hashAlgorithm = hashAlgorithm.toLowerCase();
    var hashes = crypto.getHashes();

    if (hashes.indexOf(hashAlgorithm) < 0) {
      throw new Error("Hash algorithm '".concat(hashAlgorithm, "' not supported!"));
    } // Password must be in unicode buffer


    var passwordBuffer = Buffer.from(password, 'utf16le'); // Generate the initial hash

    var key = this.hash(hashAlgorithm, Buffer.from(saltValue, 'base64'), passwordBuffer); // Now regenerate until spin count

    for (var i = 0; i < spinCount; i++) {
      var iterator = Buffer.alloc(4); // this is the 'special' element of Excel password hashing
      // that stops us from using crypto.pbkdf2()

      iterator.writeUInt32LE(i, 0);
      key = this.hash(hashAlgorithm, key, iterator);
    }

    return key.toString('base64');
  },

  /**
   * Generates cryptographically strong pseudo-random data.
   * @param size The size argument is a number indicating the number of bytes to generate.
   */
  randomBytes: function randomBytes(size) {
    return crypto.randomBytes(size);
  }
};
module.exports = Encryptor;


}).call(this,require("buffer").Buffer)
},{"buffer":168,"crypto":176}],19:[function(require,module,exports){
"use strict";

var colCache = require('./col-cache'); // const cellRefRegex = /(([a-z_\-0-9]*)!)?[$]?([a-z]+)[$]?([1-9][0-9]*)/i;


var replacementCandidateRx = /(([a-z_\-0-9]*)!)?([a-z0-9_$]{2,})([(])?/gi;
var CRrx = /^([$])?([a-z]+)([$])?([1-9][0-9]*)$/i;

function slideFormula(formula, fromCell, toCell) {
  var offset = colCache.decode(fromCell);
  var to = colCache.decode(toCell);
  return formula.replace(replacementCandidateRx, function (refMatch, sheet, sheetMaybe, addrPart, trailingParen) {
    if (trailingParen) {
      return refMatch;
    }

    var match = CRrx.exec(addrPart);

    if (match) {
      var colDollar = match[1];
      var colStr = match[2].toUpperCase();
      var rowDollar = match[3];
      var rowStr = match[4];

      if (colStr.length > 3 || colStr.length === 3 && colStr > 'XFD') {
        // > XFD is the highest col number in excel 2007 and beyond, so this is a named range
        return refMatch;
      }

      var col = colCache.l2n(colStr);
      var row = parseInt(rowStr, 10);

      if (!colDollar) {
        col += to.col - offset.col;
      }

      if (!rowDollar) {
        row += to.row - offset.row;
      }

      var res = (sheet || '') + (colDollar || '') + colCache.n2l(col) + (rowDollar || '') + row;
      return res;
    }

    return refMatch;
  });
}

module.exports = {
  slideFormula: slideFormula
};


},{"./col-cache":17}],20:[function(require,module,exports){
(function (process,Buffer){
"use strict";

function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }

function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

/* eslint-disable max-classes-per-file */
var Stream = require('stream');

var utils = require('./utils');

var StringBuf = require('./string-buf'); // =============================================================================
// data chunks - encapsulating incoming data


var StringChunk =
/*#__PURE__*/
function () {
  function StringChunk(data, encoding) {
    _classCallCheck(this, StringChunk);

    this._data = data;
    this._encoding = encoding;
  }

  _createClass(StringChunk, [{
    key: "copy",
    // copy to target buffer
    value: function copy(target, targetOffset, offset, length) {
      return this.toBuffer().copy(target, targetOffset, offset, length);
    }
  }, {
    key: "toBuffer",
    value: function toBuffer() {
      if (!this._buffer) {
        this._buffer = Buffer.from(this._data, this._encoding);
      }

      return this._buffer;
    }
  }, {
    key: "length",
    get: function get() {
      return this.toBuffer().length;
    }
  }]);

  return StringChunk;
}();

var StringBufChunk =
/*#__PURE__*/
function () {
  function StringBufChunk(data) {
    _classCallCheck(this, StringBufChunk);

    this._data = data;
  }

  _createClass(StringBufChunk, [{
    key: "copy",
    // copy to target buffer
    value: function copy(target, targetOffset, offset, length) {
      // eslint-disable-next-line no-underscore-dangle
      return this._data._buf.copy(target, targetOffset, offset, length);
    }
  }, {
    key: "toBuffer",
    value: function toBuffer() {
      return this._data.toBuffer();
    }
  }, {
    key: "length",
    get: function get() {
      return this._data.length;
    }
  }]);

  return StringBufChunk;
}();

var BufferChunk =
/*#__PURE__*/
function () {
  function BufferChunk(data) {
    _classCallCheck(this, BufferChunk);

    this._data = data;
  }

  _createClass(BufferChunk, [{
    key: "copy",
    // copy to target buffer
    value: function copy(target, targetOffset, offset, length) {
      this._data.copy(target, targetOffset, offset, length);
    }
  }, {
    key: "toBuffer",
    value: function toBuffer() {
      return this._data;
    }
  }, {
    key: "length",
    get: function get() {
      return this._data.length;
    }
  }]);

  return BufferChunk;
}(); // =============================================================================
// ReadWriteBuf - a single buffer supporting simple read-write


var ReadWriteBuf =
/*#__PURE__*/
function () {
  function ReadWriteBuf(size) {
    _classCallCheck(this, ReadWriteBuf);

    this.size = size; // the buffer

    this.buffer = Buffer.alloc(size); // read index

    this.iRead = 0; // write index

    this.iWrite = 0;
  }

  _createClass(ReadWriteBuf, [{
    key: "toBuffer",
    value: function toBuffer() {
      if (this.iRead === 0 && this.iWrite === this.size) {
        return this.buffer;
      }

      var buf = Buffer.alloc(this.iWrite - this.iRead);
      this.buffer.copy(buf, 0, this.iRead, this.iWrite);
      return buf;
    }
  }, {
    key: "read",
    value: function read(size) {
      var buf; // read size bytes from buffer and return buffer

      if (size === 0) {
        // special case - return null if no data requested
        return null;
      }

      if (size === undefined || size >= this.length) {
        // if no size specified or size is at least what we have then return all of the bytes
        buf = this.toBuffer();
        this.iRead = this.iWrite;
        return buf;
      } // otherwise return a chunk


      buf = Buffer.alloc(size);
      this.buffer.copy(buf, 0, this.iRead, size);
      this.iRead += size;
      return buf;
    }
  }, {
    key: "write",
    value: function write(chunk, offset, length) {
      // write as many bytes from data from optional source offset
      // and return number of bytes written
      var size = Math.min(length, this.size - this.iWrite);
      chunk.copy(this.buffer, this.iWrite, offset, offset + size);
      this.iWrite += size;
      return size;
    }
  }, {
    key: "length",
    get: function get() {
      return this.iWrite - this.iRead;
    }
  }, {
    key: "eod",
    get: function get() {
      return this.iRead === this.iWrite;
    }
  }, {
    key: "full",
    get: function get() {
      return this.iWrite === this.size;
    }
  }]);

  return ReadWriteBuf;
}(); // =============================================================================
// StreamBuf - a multi-purpose read-write stream
//  As MemBuf - write as much data as you like. Then call toBuffer() to consolidate
//  As StreamHub - pipe to multiple writables
//  As readable stream - feed data into the writable part and have some other code read from it.
// Note: Not sure why but StreamBuf does not like JS "class" sugar. It fails the
// integration tests


var StreamBuf = function StreamBuf(options) {
  options = options || {};
  this.bufSize = options.bufSize || 1024 * 1024;
  this.buffers = []; // batch mode fills a buffer completely before passing the data on
  // to pipes or 'readable' event listeners

  this.batch = options.batch || false;
  this.corked = false; // where in the current writable buffer we're up to

  this.inPos = 0; // where in the current readable buffer we've read up to

  this.outPos = 0; // consuming pipe streams go here

  this.pipes = []; // controls emit('data')

  this.paused = false;
  this.encoding = null;
};

utils.inherits(StreamBuf, Stream.Duplex, {
  toBuffer: function toBuffer() {
    switch (this.buffers.length) {
      case 0:
        return null;

      case 1:
        return this.buffers[0].toBuffer();

      default:
        return Buffer.concat(this.buffers.map(function (rwBuf) {
          return rwBuf.toBuffer();
        }));
    }
  },
  // writable
  // event drain - if write returns false (which it won't), indicates when safe to write again.
  // finish - end() has been called
  // pipe(src) - pipe() has been called on readable
  // unpipe(src) - unpipe() has been called on readable
  // error - duh
  _getWritableBuffer: function _getWritableBuffer() {
    if (this.buffers.length) {
      var last = this.buffers[this.buffers.length - 1];

      if (!last.full) {
        return last;
      }
    }

    var buf = new ReadWriteBuf(this.bufSize);
    this.buffers.push(buf);
    return buf;
  },
  _pipe: function () {
    var _pipe2 = _asyncToGenerator(
    /*#__PURE__*/
    regeneratorRuntime.mark(function _callee(chunk) {
      var write;
      return regeneratorRuntime.wrap(function _callee$(_context) {
        while (1) {
          switch (_context.prev = _context.next) {
            case 0:
              write = function write(pipe) {
                return new Promise(function (resolve) {
                  pipe.write(chunk.toBuffer(), function () {
                    resolve();
                  });
                });
              };

              _context.next = 3;
              return Promise.all(this.pipes.map(write));

            case 3:
            case "end":
              return _context.stop();
          }
        }
      }, _callee, this);
    }));

    function _pipe(_x) {
      return _pipe2.apply(this, arguments);
    }

    return _pipe;
  }(),
  _writeToBuffers: function _writeToBuffers(chunk) {
    var inPos = 0;
    var inLen = chunk.length;

    while (inPos < inLen) {
      // find writable buffer
      var buffer = this._getWritableBuffer(); // write some data


      inPos += buffer.write(chunk, inPos, inLen - inPos);
    }
  },
  write: function () {
    var _write = _asyncToGenerator(
    /*#__PURE__*/
    regeneratorRuntime.mark(function _callee2(data, encoding, callback) {
      var chunk;
      return regeneratorRuntime.wrap(function _callee2$(_context2) {
        while (1) {
          switch (_context2.prev = _context2.next) {
            case 0:
              if (encoding instanceof Function) {
                callback = encoding;
                encoding = 'utf8';
              }

              callback = callback || utils.nop; // encapsulate data into a chunk

              if (data instanceof StringBuf) {
                chunk = new StringBufChunk(data);
              } else if (data instanceof Buffer) {
                chunk = new BufferChunk(data);
              } else {
                // assume string
                chunk = new StringChunk(data, encoding);
              } // now, do something with the chunk


              if (!this.pipes.length) {
                _context2.next = 19;
                break;
              }

              if (!this.batch) {
                _context2.next = 9;
                break;
              }

              this._writeToBuffers(chunk);

              while (!this.corked && this.buffers.length > 1) {
                this._pipe(this.buffers.shift());
              }

              _context2.next = 17;
              break;

            case 9:
              if (this.corked) {
                _context2.next = 15;
                break;
              }

              _context2.next = 12;
              return this._pipe(chunk);

            case 12:
              callback();
              _context2.next = 17;
              break;

            case 15:
              this._writeToBuffers(chunk);

              process.nextTick(callback);

            case 17:
              _context2.next = 22;
              break;

            case 19:
              if (!this.paused) {
                this.emit('data', chunk.toBuffer());
              }

              this._writeToBuffers(chunk);

              this.emit('readable');

            case 22:
              return _context2.abrupt("return", true);

            case 23:
            case "end":
              return _context2.stop();
          }
        }
      }, _callee2, this);
    }));

    function write(_x2, _x3, _x4) {
      return _write.apply(this, arguments);
    }

    return write;
  }(),
  cork: function cork() {
    this.corked = true;
  },
  _flush: function _flush()
  /* destination */
  {
    // if we have comsumers...
    if (this.pipes.length) {
      // and there's stuff not written
      while (this.buffers.length) {
        this._pipe(this.buffers.shift());
      }
    }
  },
  uncork: function uncork() {
    this.corked = false;

    this._flush();
  },
  end: function end(chunk, encoding, callback) {
    var _this = this;

    var writeComplete = function writeComplete(error) {
      if (error) {
        callback(error);
      } else {
        _this._flush();

        _this.pipes.forEach(function (pipe) {
          pipe.end();
        });

        _this.emit('finish');
      }
    };

    if (chunk) {
      this.write(chunk, encoding, writeComplete);
    } else {
      writeComplete();
    }
  },
  // readable
  // event readable - some data is now available
  // event data - switch to flowing mode - feeds chunks to handler
  // event end - no more data
  // event close - optional, indicates upstream close
  // event error - duh
  read: function read(size) {
    var buffers; // read min(buffer, size || infinity)

    if (size) {
      buffers = [];

      while (size && this.buffers.length && !this.buffers[0].eod) {
        var first = this.buffers[0];
        var buffer = first.read(size);
        size -= buffer.length;
        buffers.push(buffer);

        if (first.eod && first.full) {
          this.buffers.shift();
        }
      }

      return Buffer.concat(buffers);
    }

    buffers = this.buffers.map(function (buf) {
      return buf.toBuffer();
    }).filter(Boolean);
    this.buffers = [];
    return Buffer.concat(buffers);
  },
  setEncoding: function setEncoding(encoding) {
    // causes stream.read or stream.on('data) to return strings of encoding instead of Buffer objects
    this.encoding = encoding;
  },
  pause: function pause() {
    this.paused = true;
  },
  resume: function resume() {
    this.paused = false;
  },
  isPaused: function isPaused() {
    return !!this.paused;
  },
  pipe: function pipe(destination) {
    // add destination to pipe list & write current buffer
    this.pipes.push(destination);

    if (!this.paused && this.buffers.length) {
      this.end();
    }
  },
  unpipe: function unpipe(destination) {
    // remove destination from pipe list
    this.pipes = this.pipes.filter(function (pipe) {
      return pipe !== destination;
    });
  },
  unshift: function unshift()
  /* chunk */
  {
    // some numpty has read some data that's not for them and they want to put it back!
    // Might implement this some day
    throw new Error('Not Implemented');
  },
  wrap: function wrap()
  /* stream */
  {
    // not implemented
    throw new Error('Not Implemented');
  }
});
module.exports = StreamBuf;


}).call(this,require('_process'),require("buffer").Buffer)
},{"./string-buf":21,"./utils":23,"_process":316,"buffer":168,"stream":337}],21:[function(require,module,exports){
(function (Buffer){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

// StringBuf - a way to keep string memory operations to a minimum
// while building the strings for the xml files
var StringBuf =
/*#__PURE__*/
function () {
  function StringBuf(options) {
    _classCallCheck(this, StringBuf);

    this._buf = Buffer.alloc(options && options.size || 16384);
    this._encoding = options && options.encoding || 'utf8'; // where in the buffer we are at

    this._inPos = 0; // for use by toBuffer()

    this._buffer = undefined;
  }

  _createClass(StringBuf, [{
    key: "toBuffer",
    value: function toBuffer() {
      // return the current data as a single enclosing buffer
      if (!this._buffer) {
        this._buffer = Buffer.alloc(this.length);

        this._buf.copy(this._buffer, 0, 0, this.length);
      }

      return this._buffer;
    }
  }, {
    key: "reset",
    value: function reset(position) {
      position = position || 0;
      this._buffer = undefined;
      this._inPos = position;
    }
  }, {
    key: "_grow",
    value: function _grow(min) {
      var size = this._buf.length * 2;

      while (size < min) {
        size *= 2;
      }

      var buf = Buffer.alloc(size);

      this._buf.copy(buf, 0);

      this._buf = buf;
    }
  }, {
    key: "addText",
    value: function addText(text) {
      this._buffer = undefined;

      var inPos = this._inPos + this._buf.write(text, this._inPos, this._encoding); // if we've hit (or nearing capacity), grow the buf


      while (inPos >= this._buf.length - 4) {
        this._grow(this._inPos + text.length); // keep trying to write until we've completely written the text


        inPos = this._inPos + this._buf.write(text, this._inPos, this._encoding);
      }

      this._inPos = inPos;
    }
  }, {
    key: "addStringBuf",
    value: function addStringBuf(inBuf) {
      if (inBuf.length) {
        this._buffer = undefined;

        if (this.length + inBuf.length > this.capacity) {
          this._grow(this.length + inBuf.length);
        } // eslint-disable-next-line no-underscore-dangle


        inBuf._buf.copy(this._buf, this._inPos, 0, inBuf.length);

        this._inPos += inBuf.length;
      }
    }
  }, {
    key: "length",
    get: function get() {
      return this._inPos;
    }
  }, {
    key: "capacity",
    get: function get() {
      return this._buf.length;
    }
  }, {
    key: "buffer",
    get: function get() {
      return this._buf;
    }
  }]);

  return StringBuf;
}();

module.exports = StringBuf;


}).call(this,require("buffer").Buffer)
},{"buffer":168}],22:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

var _ = {
  each: function each(obj, cb) {
    if (obj) {
      if (Array.isArray(obj)) {
        obj.forEach(cb);
      } else {
        Object.keys(obj).forEach(function (key) {
          cb(obj[key], key);
        });
      }
    }
  },
  some: function some(obj, cb) {
    if (obj) {
      if (Array.isArray(obj)) {
        return obj.some(cb);
      }

      return Object.keys(obj).some(function (key) {
        return cb(obj[key], key);
      });
    }

    return false;
  },
  every: function every(obj, cb) {
    if (obj) {
      if (Array.isArray(obj)) {
        return obj.every(cb);
      }

      return Object.keys(obj).every(function (key) {
        return cb(obj[key], key);
      });
    }

    return true;
  },
  map: function map(obj, cb) {
    if (obj) {
      if (Array.isArray(obj)) {
        return obj.map(cb);
      }

      return Object.keys(obj).map(function (key) {
        return cb(obj[key], key);
      });
    }

    return [];
  },
  keyBy: function keyBy(a, p) {
    return a.reduce(function (o, v) {
      o[v[p]] = v;
      return o;
    }, {});
  },
  isEqual: function isEqual(a, b) {
    var aType = _typeof(a);

    var bType = _typeof(b);

    var aArray = Array.isArray(a);
    var bArray = Array.isArray(b);

    if (aType !== bType) {
      return false;
    }

    switch (_typeof(a)) {
      case 'object':
        if (aArray || bArray) {
          if (aArray && bArray) {
            return a.length === b.length && a.every(function (aValue, index) {
              var bValue = b[index];
              return _.isEqual(aValue, bValue);
            });
          }

          return false;
        }

        return _.every(a, function (aValue, key) {
          var bValue = b[key];
          return _.isEqual(aValue, bValue);
        });

      default:
        return a === b;
    }
  },
  escapeHtml: function escapeHtml(html) {
    return html.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#039;');
  },
  strcmp: function strcmp(a, b) {
    if (a < b) return -1;
    if (a > b) return 1;
    return 0;
  }
};
module.exports = _;


},{}],23:[function(require,module,exports){
(function (global,setImmediate){
"use strict";

var fs = require('fs'); // useful stuff


var inherits = function inherits(cls, superCtor, statics, prototype) {
  // eslint-disable-next-line no-underscore-dangle
  cls.super_ = superCtor;

  if (!prototype) {
    prototype = statics;
    statics = null;
  }

  if (statics) {
    Object.keys(statics).forEach(function (i) {
      Object.defineProperty(cls, i, Object.getOwnPropertyDescriptor(statics, i));
    });
  }

  var properties = {
    constructor: {
      value: cls,
      enumerable: false,
      writable: false,
      configurable: true
    }
  };

  if (prototype) {
    Object.keys(prototype).forEach(function (i) {
      properties[i] = Object.getOwnPropertyDescriptor(prototype, i);
    });
  }

  cls.prototype = Object.create(superCtor.prototype, properties);
};

var utils = {
  nop: function nop() {},
  promiseImmediate: function promiseImmediate(value) {
    return new Promise(function (resolve) {
      if (global.setImmediate) {
        setImmediate(function () {
          resolve(value);
        });
      } else {
        // poorman's setImmediate - must wait at least 1ms
        setTimeout(function () {
          resolve(value);
        }, 1);
      }
    });
  },
  inherits: inherits,
  dateToExcel: function dateToExcel(d, date1904) {
    return 25569 + d.getTime() / (24 * 3600 * 1000) - (date1904 ? 1462 : 0);
  },
  excelToDate: function excelToDate(v, date1904) {
    var millisecondSinceEpoch = Math.round((v - 25569 + (date1904 ? 1462 : 0)) * 24 * 3600 * 1000);
    return new Date(millisecondSinceEpoch);
  },
  parsePath: function parsePath(filepath) {
    var last = filepath.lastIndexOf('/');
    return {
      path: filepath.substring(0, last),
      name: filepath.substring(last + 1)
    };
  },
  getRelsPath: function getRelsPath(filepath) {
    var path = utils.parsePath(filepath);
    return "".concat(path.path, "/_rels/").concat(path.name, ".rels");
  },
  xmlEncode: function xmlEncode(text) {
    // eslint-disable-next-line no-control-regex
    return text.replace(/[<>&'"\x7F\x00-\x08\x0B-\x0C\x0E-\x1F]/g, function (c) {
      switch (c) {
        case '<':
          return '&lt;';

        case '>':
          return '&gt;';

        case '&':
          return '&amp;';

        case '\'':
          return '&apos;';

        case '"':
          return '&quot;';

        default:
          return '';
      }
    });
  },
  xmlDecode: function xmlDecode(text) {
    return text.replace(/&([a-z]*);/, function (c) {
      switch (c) {
        case '&lt;':
          return '<';

        case '&gt;':
          return '>';

        case '&amp;':
          return '&';

        case '&apos;':
          return '\'';

        case '&quot;':
          return '"';

        default:
          return c;
      }
    });
  },
  validInt: function validInt(value) {
    var i = parseInt(value, 10);
    return !Number.isNaN(i) ? i : 0;
  },
  isDateFmt: function isDateFmt(fmt) {
    if (!fmt) {
      return false;
    } // must remove all chars inside quotes and []


    fmt = fmt.replace(/\[[^\]]*]/g, '');
    fmt = fmt.replace(/"[^"]*"/g, ''); // then check for date formatting chars

    var result = fmt.match(/[ymdhMsb]+/) !== null;
    return result;
  },
  fs: {
    exists: function exists(path) {
      return new Promise(function (resolve) {
        fs.access(path, fs.constants.F_OK, function (err) {
          resolve(!err);
        });
      });
    }
  },
  toIsoDateString: function toIsoDateString(dt) {
    return dt.toIsoString().subsstr(0, 10);
  }
};
module.exports = utils;


}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("timers").setImmediate)
},{"fs":166,"timers":352}],24:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var _ = require('./under-dash');

var utils = require('./utils'); // constants


var OPEN_ANGLE = '<';
var CLOSE_ANGLE = '>';
var OPEN_ANGLE_SLASH = '</';
var CLOSE_SLASH_ANGLE = '/>';
var EQUALS_QUOTE = '="';
var QUOTE = '"';
var SPACE = ' ';

function pushAttribute(xml, name, value) {
  xml.push(SPACE);
  xml.push(name);
  xml.push(EQUALS_QUOTE);
  xml.push(utils.xmlEncode(value.toString()));
  xml.push(QUOTE);
}

function pushAttributes(xml, attributes) {
  if (attributes) {
    _.each(attributes, function (value, name) {
      if (value !== undefined) {
        pushAttribute(xml, name, value);
      }
    });
  }
}

var XmlStream =
/*#__PURE__*/
function () {
  function XmlStream() {
    _classCallCheck(this, XmlStream);

    this._xml = [];
    this._stack = [];
    this._rollbacks = [];
  }

  _createClass(XmlStream, [{
    key: "openXml",
    value: function openXml(docAttributes) {
      var xml = this._xml; // <?xml version="1.0" encoding="UTF-8" standalone="yes"?>

      xml.push('<?xml');
      pushAttributes(xml, docAttributes);
      xml.push('?>\n');
    }
  }, {
    key: "openNode",
    value: function openNode(name, attributes) {
      var parent = this.tos;
      var xml = this._xml;

      if (parent && this.open) {
        xml.push(CLOSE_ANGLE);
      }

      this._stack.push(name); // start streaming node


      xml.push(OPEN_ANGLE);
      xml.push(name);
      pushAttributes(xml, attributes);
      this.leaf = true;
      this.open = true;
    }
  }, {
    key: "addAttribute",
    value: function addAttribute(name, value) {
      if (!this.open) {
        throw new Error('Cannot write attributes to node if it is not open');
      }

      if (value !== undefined) {
        pushAttribute(this._xml, name, value);
      }
    }
  }, {
    key: "addAttributes",
    value: function addAttributes(attrs) {
      if (!this.open) {
        throw new Error('Cannot write attributes to node if it is not open');
      }

      pushAttributes(this._xml, attrs);
    }
  }, {
    key: "writeText",
    value: function writeText(text) {
      var xml = this._xml;

      if (this.open) {
        xml.push(CLOSE_ANGLE);
        this.open = false;
      }

      this.leaf = false;
      xml.push(utils.xmlEncode(text.toString()));
    }
  }, {
    key: "writeXml",
    value: function writeXml(xml) {
      if (this.open) {
        this._xml.push(CLOSE_ANGLE);

        this.open = false;
      }

      this.leaf = false;

      this._xml.push(xml);
    }
  }, {
    key: "closeNode",
    value: function closeNode() {
      var node = this._stack.pop();

      var xml = this._xml;

      if (this.leaf) {
        xml.push(CLOSE_SLASH_ANGLE);
      } else {
        xml.push(OPEN_ANGLE_SLASH);
        xml.push(node);
        xml.push(CLOSE_ANGLE);
      }

      this.open = false;
      this.leaf = false;
    }
  }, {
    key: "leafNode",
    value: function leafNode(name, attributes, text) {
      this.openNode(name, attributes);

      if (text !== undefined) {
        // zeros need to be written
        this.writeText(text);
      }

      this.closeNode();
    }
  }, {
    key: "closeAll",
    value: function closeAll() {
      while (this._stack.length) {
        this.closeNode();
      }
    }
  }, {
    key: "addRollback",
    value: function addRollback() {
      this._rollbacks.push({
        xml: this._xml.length,
        stack: this._stack.length,
        leaf: this.leaf,
        open: this.open
      });

      return this.cursor;
    }
  }, {
    key: "commit",
    value: function commit() {
      this._rollbacks.pop();
    }
  }, {
    key: "rollback",
    value: function rollback() {
      var r = this._rollbacks.pop();

      if (this._xml.length > r.xml) {
        this._xml.splice(r.xml, this._xml.length - r.xml);
      }

      if (this._stack.length > r.stack) {
        this._stack.splice(r.stack, this._stack.length - r.stack);
      }

      this.leaf = r.leaf;
      this.open = r.open;
    }
  }, {
    key: "tos",
    get: function get() {
      return this._stack.length ? this._stack[this._stack.length - 1] : undefined;
    }
  }, {
    key: "cursor",
    get: function get() {
      // handy way to track whether anything has been added
      return this._xml.length;
    }
  }, {
    key: "xml",
    get: function get() {
      this.closeAll();
      return this._xml.join('');
    }
  }]);

  return XmlStream;
}();

XmlStream.StdDocAttributes = {
  version: '1.0',
  encoding: 'UTF-8',
  standalone: 'yes'
};
module.exports = XmlStream;


},{"./under-dash":22,"./utils":23}],25:[function(require,module,exports){
(function (process){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }

function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

/* eslint-disable max-classes-per-file */
var events = require('events');

var JSZip = require('jszip');

var StreamBuf = require('./stream-buf'); // The purpose of this module is to wrap the js-zip library into a streaming zip library
// since most of the exceljs code uses streams.
// One day I might find (or build) a properly streaming browser safe zip lib
// =============================================================================
// The ZipReader class
// Unpacks an incoming zip stream


var ZipReader =
/*#__PURE__*/
function (_events$EventEmitter) {
  _inherits(ZipReader, _events$EventEmitter);

  function ZipReader(options) {
    var _this;

    _classCallCheck(this, ZipReader);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(ZipReader).call(this));
    _this.count = 0;
    _this.jsZip = new JSZip();
    _this.stream = new StreamBuf();

    _this.stream.on('finish', function () {
      _this._process();
    });

    _this.getEntryType = options.getEntryType || function () {
      return 'string';
    };

    return _this;
  }

  _createClass(ZipReader, [{
    key: "_finished",
    value: function _finished() {
      var _this2 = this;

      if (! --this.count) {
        process.nextTick(function () {
          _this2.emit('finished');
        });
      }
    }
  }, {
    key: "_process",
    value: function () {
      var _process2 = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee2() {
        var _this3 = this;

        var content, zip;
        return regeneratorRuntime.wrap(function _callee2$(_context2) {
          while (1) {
            switch (_context2.prev = _context2.next) {
              case 0:
                _context2.prev = 0;
                content = this.stream.read();
                _context2.next = 4;
                return this.jsZip.loadAsync(content);

              case 4:
                zip = _context2.sent;
                zip.forEach(
                /*#__PURE__*/
                function () {
                  var _ref = _asyncToGenerator(
                  /*#__PURE__*/
                  regeneratorRuntime.mark(function _callee(path, entry) {
                    var data, entryStream;
                    return regeneratorRuntime.wrap(function _callee$(_context) {
                      while (1) {
                        switch (_context.prev = _context.next) {
                          case 0:
                            if (entry.dir) {
                              _context.next = 17;
                              break;
                            }

                            _this3.count++;
                            _context.prev = 2;
                            _context.next = 5;
                            return entry.async(_this3.getEntryType(path));

                          case 5:
                            data = _context.sent;
                            entryStream = new StreamBuf();
                            entryStream.path = path;
                            entryStream.write(data);

                            entryStream.autodrain = function () {
                              _this3._finished();
                            };

                            entryStream.on('finish', function () {
                              _this3._finished();
                            });

                            _this3.emit('entry', entryStream);

                            _context.next = 17;
                            break;

                          case 14:
                            _context.prev = 14;
                            _context.t0 = _context["catch"](2);

                            _this3.emit('error', _context.t0);

                          case 17:
                          case "end":
                            return _context.stop();
                        }
                      }
                    }, _callee, null, [[2, 14]]);
                  }));

                  return function (_x, _x2) {
                    return _ref.apply(this, arguments);
                  };
                }());
                _context2.next = 11;
                break;

              case 8:
                _context2.prev = 8;
                _context2.t0 = _context2["catch"](0);
                this.emit('error', _context2.t0);

              case 11:
              case "end":
                return _context2.stop();
            }
          }
        }, _callee2, this, [[0, 8]]);
      }));

      function _process() {
        return _process2.apply(this, arguments);
      }

      return _process;
    }() // ==========================================================================
    // Stream.Writable interface

  }, {
    key: "write",
    value: function write(data, encoding, callback) {
      if (this.error) {
        if (callback) {
          callback(this.error);
        }

        throw this.error;
      } else {
        return this.stream.write(data, encoding, callback);
      }
    }
  }, {
    key: "cork",
    value: function cork() {
      return this.stream.cork();
    }
  }, {
    key: "uncork",
    value: function uncork() {
      return this.stream.uncork();
    }
  }, {
    key: "end",
    value: function end() {
      return this.stream.end();
    }
  }, {
    key: "destroy",
    value: function destroy(error) {
      this.emit('finished');
      this.error = error;
    }
  }]);

  return ZipReader;
}(events.EventEmitter); // =============================================================================
// The ZipWriter class
// Packs streamed data into an output zip stream


var ZipWriter =
/*#__PURE__*/
function (_events$EventEmitter2) {
  _inherits(ZipWriter, _events$EventEmitter2);

  function ZipWriter(options) {
    var _this4;

    _classCallCheck(this, ZipWriter);

    _this4 = _possibleConstructorReturn(this, _getPrototypeOf(ZipWriter).call(this));
    _this4.options = Object.assign({
      type: 'nodebuffer',
      compression: 'DEFLATE'
    }, options);
    _this4.zip = new JSZip();
    _this4.stream = new StreamBuf();
    return _this4;
  }

  _createClass(ZipWriter, [{
    key: "append",
    value: function append(data, options) {
      if (options.hasOwnProperty('base64') && options.base64) {
        this.zip.file(options.name, data, {
          base64: true
        });
      } else {
        this.zip.file(options.name, data);
      }
    }
  }, {
    key: "finalize",
    value: function () {
      var _finalize = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee3() {
        var content;
        return regeneratorRuntime.wrap(function _callee3$(_context3) {
          while (1) {
            switch (_context3.prev = _context3.next) {
              case 0:
                _context3.next = 2;
                return this.zip.generateAsync(this.options);

              case 2:
                content = _context3.sent;
                this.stream.end(content);
                this.emit('finish');

              case 5:
              case "end":
                return _context3.stop();
            }
          }
        }, _callee3, this);
      }));

      function finalize() {
        return _finalize.apply(this, arguments);
      }

      return finalize;
    }() // ==========================================================================
    // Stream.Readable interface

  }, {
    key: "read",
    value: function read(size) {
      return this.stream.read(size);
    }
  }, {
    key: "setEncoding",
    value: function setEncoding(encoding) {
      return this.stream.setEncoding(encoding);
    }
  }, {
    key: "pause",
    value: function pause() {
      return this.stream.pause();
    }
  }, {
    key: "resume",
    value: function resume() {
      return this.stream.resume();
    }
  }, {
    key: "isPaused",
    value: function isPaused() {
      return this.stream.isPaused();
    }
  }, {
    key: "pipe",
    value: function pipe(destination, options) {
      return this.stream.pipe(destination, options);
    }
  }, {
    key: "unpipe",
    value: function unpipe(destination) {
      return this.stream.unpipe(destination);
    }
  }, {
    key: "unshift",
    value: function unshift(chunk) {
      return this.stream.unshift(chunk);
    }
  }, {
    key: "wrap",
    value: function wrap(stream) {
      return this.stream.wrap(stream);
    }
  }]);

  return ZipWriter;
}(events.EventEmitter); // =============================================================================


module.exports = {
  ZipReader: ZipReader,
  ZipWriter: ZipWriter
};


}).call(this,require('_process'))
},{"./stream-buf":20,"_process":316,"events":205,"jszip":257}],26:[function(require,module,exports){
"use strict";

module.exports = {
  0: {
    f: 'General'
  },
  1: {
    f: '0'
  },
  2: {
    f: '0.00'
  },
  3: {
    f: '#,##0'
  },
  4: {
    f: '#,##0.00'
  },
  9: {
    f: '0%'
  },
  10: {
    f: '0.00%'
  },
  11: {
    f: '0.00E+00'
  },
  12: {
    f: '# ?/?'
  },
  13: {
    f: '# ??/??'
  },
  14: {
    f: 'mm-dd-yy'
  },
  15: {
    f: 'd-mmm-yy'
  },
  16: {
    f: 'd-mmm'
  },
  17: {
    f: 'mmm-yy'
  },
  18: {
    f: 'h:mm AM/PM'
  },
  19: {
    f: 'h:mm:ss AM/PM'
  },
  20: {
    f: 'h:mm'
  },
  21: {
    f: 'h:mm:ss'
  },
  22: {
    f: 'm/d/yy "h":mm'
  },
  27: {
    'zh-tw': '[$-404]e/m/d',
    'zh-cn': 'yyyy"年"m"月"',
    'ja-jp': '[$-411]ge.m.d',
    'ko-kr': 'yyyy"年" mm"月" dd"日"'
  },
  28: {
    'zh-tw': '[$-404]e"年"m"月"d"日"',
    'zh-cn': 'm"月"d"日"',
    'ja-jp': '[$-411]ggge"年"m"月"d"日"',
    'ko-kr': 'mm-dd'
  },
  29: {
    'zh-tw': '[$-404]e"年"m"月"d"日"',
    'zh-cn': 'm"月"d"日"',
    'ja-jp': '[$-411]ggge"年"m"月"d"日"',
    'ko-kr': 'mm-dd'
  },
  30: {
    'zh-tw': 'm/d/yy ',
    'zh-cn': 'm-d-yy',
    'ja-jp': 'm/d/yy',
    'ko-kr': 'mm-dd-yy'
  },
  31: {
    'zh-tw': 'yyyy"年"m"月"d"日"',
    'zh-cn': 'yyyy"年"m"月"d"日"',
    'ja-jp': 'yyyy"年"m"月"d"日"',
    'ko-kr': 'yyyy"년" mm"월" dd"일"'
  },
  32: {
    'zh-tw': 'hh"時"mm"分"',
    'zh-cn': 'h"时"mm"分"',
    'ja-jp': 'h"時"mm"分"',
    'ko-kr': 'h"시" mm"분"'
  },
  33: {
    'zh-tw': 'hh"時"mm"分"ss"秒"',
    'zh-cn': 'h"时"mm"分"ss"秒"',
    'ja-jp': 'h"時"mm"分"ss"秒"',
    'ko-kr': 'h"시" mm"분" ss"초"'
  },
  34: {
    'zh-tw': '上午/下午 hh"時"mm"分"',
    'zh-cn': '上午/下午 h"时"mm"分"',
    'ja-jp': 'yyyy"年"m"月"',
    'ko-kr': 'yyyy-mm-dd'
  },
  35: {
    'zh-tw': '上午/下午 hh"時"mm"分"ss"秒"',
    'zh-cn': '上午/下午 h"时"mm"分"ss"秒"',
    'ja-jp': 'm"月"d"日"',
    'ko-kr': 'yyyy-mm-dd'
  },
  36: {
    'zh-tw': '[$-404]e/m/d',
    'zh-cn': 'yyyy"年"m"月"',
    'ja-jp': '[$-411]ge.m.d',
    'ko-kr': 'yyyy"年" mm"月" dd"日"'
  },
  37: {
    f: '#,##0 ;(#,##0)'
  },
  38: {
    f: '#,##0 ;[Red](#,##0)'
  },
  39: {
    f: '#,##0.00 ;(#,##0.00)'
  },
  40: {
    f: '#,##0.00 ;[Red](#,##0.00)'
  },
  45: {
    f: 'mm:ss'
  },
  46: {
    f: '[h]:mm:ss'
  },
  47: {
    f: 'mmss.0'
  },
  48: {
    f: '##0.0E+0'
  },
  49: {
    f: '@'
  },
  50: {
    'zh-tw': '[$-404]e/m/d',
    'zh-cn': 'yyyy"年"m"月"',
    'ja-jp': '[$-411]ge.m.d',
    'ko-kr': 'yyyy"年" mm"月" dd"日"'
  },
  51: {
    'zh-tw': '[$-404]e"年"m"月"d"日"',
    'zh-cn': 'm"月"d"日"',
    'ja-jp': '[$-411]ggge"年"m"月"d"日"',
    'ko-kr': 'mm-dd'
  },
  52: {
    'zh-tw': '上午/下午 hh"時"mm"分"',
    'zh-cn': 'yyyy"年"m"月"',
    'ja-jp': 'yyyy"年"m"月"',
    'ko-kr': 'yyyy-mm-dd'
  },
  53: {
    'zh-tw': '上午/下午 hh"時"mm"分"ss"秒"',
    'zh-cn': 'm"月"d"日"',
    'ja-jp': 'm"月"d"日"',
    'ko-kr': 'yyyy-mm-dd'
  },
  54: {
    'zh-tw': '[$-404]e"年"m"月"d"日"',
    'zh-cn': 'm"月"d"日"',
    'ja-jp': '[$-411]ggge"年"m"月"d"日"',
    'ko-kr': 'mm-dd'
  },
  55: {
    'zh-tw': '上午/下午 hh"時"mm"分"',
    'zh-cn': '上午/下午 h"时"mm"分"',
    'ja-jp': 'yyyy"年"m"月"',
    'ko-kr': 'yyyy-mm-dd'
  },
  56: {
    'zh-tw': '上午/下午 hh"時"mm"分"ss"秒"',
    'zh-cn': '上午/下午 h"时"mm"分"ss"秒"',
    'ja-jp': 'm"月"d"日"',
    'ko-kr': 'yyyy-mm-dd'
  },
  57: {
    'zh-tw': '[$-404]e/m/d',
    'zh-cn': 'yyyy"年"m"月"',
    'ja-jp': '[$-411]ge.m.d',
    'ko-kr': 'yyyy"年" mm"月" dd"日"'
  },
  58: {
    'zh-tw': '[$-404]e"年"m"月"d"日"',
    'zh-cn': 'm"月"d"日"',
    'ja-jp': '[$-411]ggge"年"m"月"d"日"',
    'ko-kr': 'mm-dd'
  },
  59: {
    'th-th': 't0'
  },
  60: {
    'th-th': 't0.00'
  },
  61: {
    'th-th': 't#,##0'
  },
  62: {
    'th-th': 't#,##0.00'
  },
  67: {
    'th-th': 't0%'
  },
  68: {
    'th-th': 't0.00%'
  },
  69: {
    'th-th': 't# ?/?'
  },
  70: {
    'th-th': 't# ??/??'
  },
  81: {
    'th-th': 'd/m/bb'
  }
};


},{}],27:[function(require,module,exports){
'use strict';

module.exports = {
  OfficeDocument: 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument',
  Worksheet: 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet',
  CalcChain: 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/calcChain',
  SharedStrings: 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/sharedStrings',
  Styles: 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles',
  Theme: 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/theme',
  Hyperlink: 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/hyperlink',
  Image: 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/image',
  CoreProperties: 'http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-properties',
  ExtenderProperties: 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/extended-properties',
  Comments: 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/comments',
  VmlDrawing: 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/vmlDrawing',
  Table: 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/table'
};


},{}],28:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var Sax = require('sax');

var XmlStream = require('../../utils/xml-stream');
/* 'virtual' methods used as a form of documentation */

/* eslint-disable class-methods-use-this */
// Base class for Xforms


var BaseXform =
/*#__PURE__*/
function () {
  function BaseXform() {
    _classCallCheck(this, BaseXform);
  }

  _createClass(BaseXform, [{
    key: "prepare",
    // constructor(/* model, name */) {}
    // ============================================================
    // Virtual Interface
    value: function prepare()
    /* model, options */
    {// optional preparation (mutation) of model so it is ready for write
    }
  }, {
    key: "render",
    value: function render()
    /* xmlStream, model */
    {// convert model to xml
    }
  }, {
    key: "parseOpen",
    value: function parseOpen()
    /* node */
    {// Sax Open Node event
    }
  }, {
    key: "parseText",
    value: function parseText()
    /* node */
    {// Sax Text event
    }
  }, {
    key: "parseClose",
    value: function parseClose()
    /* name */
    {// Sax Close Node event
    }
  }, {
    key: "reconcile",
    value: function reconcile()
    /* model, options */
    {} // optional post-parse step (opposite to prepare)
    // ============================================================

  }, {
    key: "reset",
    value: function reset() {
      // to make sure parses don't bleed to next iteration
      this.model = null; // if we have a map - reset them too

      if (this.map) {
        Object.values(this.map).forEach(function (xform) {
          if (xform instanceof BaseXform) {
            xform.reset();
          } else if (xform.xform) {
            xform.xform.reset();
          }
        });
      }
    }
  }, {
    key: "mergeModel",
    value: function mergeModel(obj) {
      // set obj's props to this.model
      this.model = Object.assign(this.model || {}, obj);
    }
  }, {
    key: "parse",
    value: function parse(parser, stream) {
      var _this = this;

      return new Promise(function (resolve, reject) {
        var abort = function abort(error) {
          // Abandon ship! Prevent the parser from consuming any more resources
          parser.removeAllListeners();
          parser.on('error', function () {}); // Ignore any parse errors from the chunk being processed

          stream.unpipe(parser);
          reject(error);
        };

        parser.on('opentag', function (node) {
          try {
            _this.parseOpen(node);
          } catch (error) {
            abort(error);
          }
        });
        parser.on('text', function (text) {
          try {
            _this.parseText(text);
          } catch (error) {
            abort(error);
          }
        });
        parser.on('closetag', function (name) {
          try {
            if (!_this.parseClose(name)) {
              resolve(_this.model);
            }
          } catch (error) {
            abort(error);
          }
        });
        parser.on('end', function () {
          resolve(_this.model);
        });
        parser.on('error', function (error) {
          abort(error);
        });
      });
    }
  }, {
    key: "parseStream",
    value: function parseStream(stream) {
      var parser = Sax.createStream(true, {});
      var promise = this.parse(parser, stream);
      stream.pipe(parser);
      return promise;
    }
  }, {
    key: "toXml",
    value: function toXml(model) {
      var xmlStream = new XmlStream();
      this.render(xmlStream, model);
      return xmlStream.xml;
    } // ============================================================
    // Useful Utilities

  }, {
    key: "xml",
    get: function get() {
      // convenience function to get the xml of this.model
      // useful for manager types that are built during the prepare phase
      return this.toXml(this.model);
    }
  }], [{
    key: "toAttribute",
    value: function toAttribute(value, dflt) {
      if (value !== undefined && value !== dflt) {
        return value.toString();
      }

      return undefined;
    }
  }, {
    key: "toStringAttribute",
    value: function toStringAttribute(value, dflt) {
      if (value !== dflt) {
        return value;
      }

      return undefined;
    }
  }, {
    key: "toStringValue",
    value: function toStringValue(attr, dflt) {
      return attr === undefined ? dflt : attr;
    }
  }, {
    key: "toBoolAttribute",
    value: function toBoolAttribute(value, dflt) {
      if (value !== undefined && value !== dflt) {
        return value ? '1' : '0';
      }

      return undefined;
    }
  }, {
    key: "toBoolValue",
    value: function toBoolValue(attr, dflt) {
      return attr === undefined ? dflt : attr === '1';
    }
  }, {
    key: "toIntAttribute",
    value: function toIntAttribute(value, dflt) {
      return BaseXform.toAttribute(value, dflt);
    }
  }, {
    key: "toIntValue",
    value: function toIntValue(attr, dflt) {
      return attr === undefined ? dflt : parseInt(attr, 10);
    }
  }, {
    key: "toFloatAttribute",
    value: function toFloatAttribute(value, dflt) {
      return BaseXform.toAttribute(value, dflt);
    }
  }, {
    key: "toFloatValue",
    value: function toFloatValue(attr, dflt) {
      return attr === undefined ? dflt : parseFloat(attr);
    }
  }]);

  return BaseXform;
}();

module.exports = BaseXform;


},{"../../utils/xml-stream":24,"sax":327}],29:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var colCache = require('../../../utils/col-cache');

var DefinedNamesXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(DefinedNamesXform, _BaseXform);

  function DefinedNamesXform() {
    _classCallCheck(this, DefinedNamesXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(DefinedNamesXform).apply(this, arguments));
  }

  _createClass(DefinedNamesXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      // <definedNames>
      //   <definedName name="name">name.ranges.join(',')</definedName>
      //   <definedName name="_xlnm.Print_Area" localSheetId="0">name.ranges.join(',')</definedName>
      // </definedNames>
      xmlStream.openNode('definedName', {
        name: model.name,
        localSheetId: model.localSheetId
      });
      xmlStream.writeText(model.ranges.join(','));
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      switch (node.name) {
        case 'definedName':
          this._parsedName = node.attributes.name;
          this._parsedLocalSheetId = node.attributes.localSheetId;
          this._parsedText = [];
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      this._parsedText.push(text);
    }
  }, {
    key: "parseClose",
    value: function parseClose() {
      this.model = {
        name: this._parsedName,
        ranges: extractRanges(this._parsedText.join(''))
      };

      if (this._parsedLocalSheetId !== undefined) {
        this.model.localSheetId = parseInt(this._parsedLocalSheetId, 10);
      }

      return false;
    }
  }]);

  return DefinedNamesXform;
}(BaseXform);

function isValidRange(range) {
  try {
    colCache.decodeEx(range);
    return true;
  } catch (err) {
    return false;
  }
}

function extractRanges(parsedText) {
  var ranges = [];
  var quotesOpened = false;
  var last = '';
  parsedText.split(',').forEach(function (item) {
    if (!item) {
      return;
    }

    var quotes = (item.match(/'/g) || []).length;

    if (!quotes) {
      if (quotesOpened) {
        last += "".concat(item, ",");
      } else if (isValidRange(item)) {
        ranges.push(item);
      }

      return;
    }

    var quotesEven = quotes % 2 === 0;

    if (!quotesOpened && quotesEven && isValidRange(item)) {
      ranges.push(item);
    } else if (quotesOpened && !quotesEven) {
      quotesOpened = false;

      if (isValidRange(last + item)) {
        ranges.push(last + item);
      }

      last = '';
    } else {
      quotesOpened = true;
      last += "".concat(item, ",");
    }
  });
  return ranges;
}

module.exports = DefinedNamesXform;


},{"../../../utils/col-cache":17,"../base-xform":28}],30:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var utils = require('../../../utils/utils');

var BaseXform = require('../base-xform');

var WorksheetXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(WorksheetXform, _BaseXform);

  function WorksheetXform() {
    _classCallCheck(this, WorksheetXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(WorksheetXform).apply(this, arguments));
  }

  _createClass(WorksheetXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.leafNode('sheet', {
        sheetId: model.id,
        name: model.name,
        state: model.state,
        'r:id': model.rId
      });
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === 'sheet') {
        this.model = {
          name: utils.xmlDecode(node.attributes.name),
          id: parseInt(node.attributes.sheetId, 10),
          state: node.attributes.state,
          rId: node.attributes['r:id']
        };
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }]);

  return WorksheetXform;
}(BaseXform);

module.exports = WorksheetXform;


},{"../../../utils/utils":23,"../base-xform":28}],31:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var WorkbookCalcPropertiesXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(WorkbookCalcPropertiesXform, _BaseXform);

  function WorkbookCalcPropertiesXform() {
    _classCallCheck(this, WorkbookCalcPropertiesXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(WorkbookCalcPropertiesXform).apply(this, arguments));
  }

  _createClass(WorkbookCalcPropertiesXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.leafNode('calcPr', {
        calcId: 171027,
        fullCalcOnLoad: model.fullCalcOnLoad ? 1 : undefined
      });
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === 'calcPr') {
        this.model = {};
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }]);

  return WorkbookCalcPropertiesXform;
}(BaseXform);

module.exports = WorkbookCalcPropertiesXform;


},{"../base-xform":28}],32:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var WorksheetPropertiesXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(WorksheetPropertiesXform, _BaseXform);

  function WorksheetPropertiesXform() {
    _classCallCheck(this, WorksheetPropertiesXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(WorksheetPropertiesXform).apply(this, arguments));
  }

  _createClass(WorksheetPropertiesXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.leafNode('workbookPr', {
        date1904: model.date1904 ? 1 : undefined,
        defaultThemeVersion: 164011,
        filterPrivacy: 1
      });
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === 'workbookPr') {
        this.model = {
          date1904: node.attributes.date1904 === '1'
        };
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }]);

  return WorksheetPropertiesXform;
}(BaseXform);

module.exports = WorksheetPropertiesXform;


},{"../base-xform":28}],33:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var WorkbookViewXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(WorkbookViewXform, _BaseXform);

  function WorkbookViewXform() {
    _classCallCheck(this, WorkbookViewXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(WorkbookViewXform).apply(this, arguments));
  }

  _createClass(WorkbookViewXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      var attributes = {
        xWindow: model.x || 0,
        yWindow: model.y || 0,
        windowWidth: model.width || 12000,
        windowHeight: model.height || 24000,
        firstSheet: model.firstSheet,
        activeTab: model.activeTab
      };

      if (model.visibility && model.visibility !== 'visible') {
        attributes.visibility = model.visibility;
      }

      xmlStream.leafNode('workbookView', attributes);
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === 'workbookView') {
        var model = this.model = {};

        var addS = function addS(name, value, dflt) {
          var s = value !== undefined ? model[name] = value : dflt;

          if (s !== undefined) {
            model[name] = s;
          }
        };

        var addN = function addN(name, value, dflt) {
          var n = value !== undefined ? model[name] = parseInt(value, 10) : dflt;

          if (n !== undefined) {
            model[name] = n;
          }
        };

        addN('x', node.attributes.xWindow, 0);
        addN('y', node.attributes.yWindow, 0);
        addN('width', node.attributes.windowWidth, 25000);
        addN('height', node.attributes.windowHeight, 10000);
        addS('visibility', node.attributes.visibility, 'visible');
        addN('activeTab', node.attributes.activeTab, undefined);
        addN('firstSheet', node.attributes.firstSheet, undefined);
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }]);

  return WorkbookViewXform;
}(BaseXform);

module.exports = WorkbookViewXform;


},{"../base-xform":28}],34:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var _ = require('../../../utils/under-dash');

var colCache = require('../../../utils/col-cache');

var XmlStream = require('../../../utils/xml-stream');

var BaseXform = require('../base-xform');

var StaticXform = require('../static-xform');

var ListXform = require('../list-xform');

var DefinedNameXform = require('./defined-name-xform');

var SheetXform = require('./sheet-xform');

var WorkbookViewXform = require('./workbook-view-xform');

var WorkbookPropertiesXform = require('./workbook-properties-xform');

var WorkbookCalcPropertiesXform = require('./workbook-calc-properties-xform');

var WorkbookXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(WorkbookXform, _BaseXform);

  function WorkbookXform() {
    var _this;

    _classCallCheck(this, WorkbookXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(WorkbookXform).call(this));
    _this.map = {
      fileVersion: WorkbookXform.STATIC_XFORMS.fileVersion,
      workbookPr: new WorkbookPropertiesXform(),
      bookViews: new ListXform({
        tag: 'bookViews',
        count: false,
        childXform: new WorkbookViewXform()
      }),
      sheets: new ListXform({
        tag: 'sheets',
        count: false,
        childXform: new SheetXform()
      }),
      definedNames: new ListXform({
        tag: 'definedNames',
        count: false,
        childXform: new DefinedNameXform()
      }),
      calcPr: new WorkbookCalcPropertiesXform()
    };
    return _this;
  }

  _createClass(WorkbookXform, [{
    key: "prepare",
    value: function prepare(model) {
      model.sheets = model.worksheets; // collate all the print areas from all of the sheets and add them to the defined names

      var printAreas = [];
      var index = 0; // sheets is sparse array - calc index manually

      model.sheets.forEach(function (sheet) {
        if (sheet.pageSetup && sheet.pageSetup.printArea) {
          var printArea = sheet.pageSetup.printArea.split(':');
          var definedName = {
            name: '_xlnm.Print_Area',
            ranges: ["'".concat(sheet.name, "'!$").concat(printArea[0], ":$").concat(printArea[1])],
            localSheetId: index
          };
          printAreas.push(definedName);
        }

        if (sheet.pageSetup && (sheet.pageSetup.printTitlesRow || sheet.pageSetup.printTitlesColumn)) {
          var ranges = [];

          if (sheet.pageSetup.printTitlesColumn) {
            var titlesColumns = sheet.pageSetup.printTitlesColumn.split(':');
            ranges.push("'".concat(sheet.name, "'!$").concat(titlesColumns[0], ":$").concat(titlesColumns[1]));
          }

          if (sheet.pageSetup.printTitlesRow) {
            var titlesRows = sheet.pageSetup.printTitlesRow.split(':');
            ranges.push("'".concat(sheet.name, "'!$").concat(titlesRows[0], ":$").concat(titlesRows[1]));
          }

          var _definedName = {
            name: '_xlnm.Print_Titles',
            ranges: ranges,
            localSheetId: index
          };
          printAreas.push(_definedName);
        }

        index++;
      });

      if (printAreas.length) {
        model.definedNames = model.definedNames.concat(printAreas);
      }

      (model.media || []).forEach(function (medium, i) {
        // assign name
        medium.name = medium.type + (i + 1);
      });
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openXml(XmlStream.StdDocAttributes);
      xmlStream.openNode('workbook', WorkbookXform.WORKBOOK_ATTRIBUTES);
      this.map.fileVersion.render(xmlStream);
      this.map.workbookPr.render(xmlStream, model.properties);
      this.map.bookViews.render(xmlStream, model.views);
      this.map.sheets.render(xmlStream, model.sheets);
      this.map.definedNames.render(xmlStream, model.definedNames);
      this.map.calcPr.render(xmlStream, model.calcProperties);
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case 'workbook':
          return true;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
          }

          return true;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case 'workbook':
          this.model = {
            sheets: this.map.sheets.model,
            properties: this.map.workbookPr.model || {},
            views: this.map.bookViews.model,
            calcProperties: {}
          };

          if (this.map.definedNames.model) {
            this.model.definedNames = this.map.definedNames.model;
          }

          return false;

        default:
          // not quite sure how we get here!
          return true;
      }
    }
  }, {
    key: "reconcile",
    value: function reconcile(model) {
      var rels = (model.workbookRels || []).reduce(function (map, rel) {
        map[rel.Id] = rel;
        return map;
      }, {}); // reconcile sheet ids, rIds and names

      var worksheets = [];
      var worksheet;
      var index = 0;
      (model.sheets || []).forEach(function (sheet) {
        var rel = rels[sheet.rId];

        if (!rel) {
          return;
        }

        worksheet = model.worksheetHash["xl/".concat(rel.Target)]; // If there are "chartsheets" in the file, rel.Target will
        // come out as chartsheets/sheet1.xml or similar here, and
        // that won't be in model.worksheetHash.
        // As we don't have the infrastructure to support chartsheets,
        // we will ignore them for now:

        if (worksheet) {
          worksheet.name = sheet.name;
          worksheet.id = sheet.id;
          worksheet.state = sheet.state;
          worksheets[index++] = worksheet;
        }
      }); // reconcile print areas

      var definedNames = [];

      _.each(model.definedNames, function (definedName) {
        if (definedName.name === '_xlnm.Print_Area') {
          worksheet = worksheets[definedName.localSheetId];

          if (worksheet) {
            if (!worksheet.pageSetup) {
              worksheet.pageSetup = {};
            }

            var range = colCache.decodeEx(definedName.ranges[0]);
            worksheet.pageSetup.printArea = range.dimensions;
          }
        } else if (definedName.name === '_xlnm.Print_Titles') {
          worksheet = worksheets[definedName.localSheetId];

          if (worksheet) {
            if (!worksheet.pageSetup) {
              worksheet.pageSetup = {};
            }

            var rangeString = definedName.ranges.join(',');
            var dollarRegex = /\$/g;
            var rowRangeRegex = /\$\d+:\$\d+/;
            var rowRangeMatches = rangeString.match(rowRangeRegex);

            if (rowRangeMatches && rowRangeMatches.length) {
              var _range = rowRangeMatches[0];
              worksheet.pageSetup.printTitlesRow = _range.replace(dollarRegex, '');
            }

            var columnRangeRegex = /\$[A-Z]+:\$[A-Z]+/;
            var columnRangeMatches = rangeString.match(columnRangeRegex);

            if (columnRangeMatches && columnRangeMatches.length) {
              var _range2 = columnRangeMatches[0];
              worksheet.pageSetup.printTitlesColumn = _range2.replace(dollarRegex, '');
            }
          }
        } else {
          definedNames.push(definedName);
        }
      });

      model.definedNames = definedNames; // used by sheets to build their image models

      model.media.forEach(function (media, i) {
        media.index = i;
      });
    }
  }]);

  return WorkbookXform;
}(BaseXform);

WorkbookXform.WORKBOOK_ATTRIBUTES = {
  xmlns: 'http://schemas.openxmlformats.org/spreadsheetml/2006/main',
  'xmlns:r': 'http://schemas.openxmlformats.org/officeDocument/2006/relationships',
  'xmlns:mc': 'http://schemas.openxmlformats.org/markup-compatibility/2006',
  'mc:Ignorable': 'x15',
  'xmlns:x15': 'http://schemas.microsoft.com/office/spreadsheetml/2010/11/main'
};
WorkbookXform.STATIC_XFORMS = {
  fileVersion: new StaticXform({
    tag: 'fileVersion',
    $: {
      appName: 'xl',
      lastEdited: 5,
      lowestEdited: 5,
      rupBuild: 9303
    }
  })
};
module.exports = WorkbookXform;


},{"../../../utils/col-cache":17,"../../../utils/under-dash":22,"../../../utils/xml-stream":24,"../base-xform":28,"../list-xform":58,"../static-xform":97,"./defined-name-xform":29,"./sheet-xform":30,"./workbook-calc-properties-xform":31,"./workbook-properties-xform":32,"./workbook-view-xform":33}],35:[function(require,module,exports){
"use strict";

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

var RichTextXform = require('../strings/rich-text-xform');

var utils = require('../../../utils/utils');

var BaseXform = require('../base-xform');
/**
  <comment ref="B1" authorId="0">
    <text>
      <r>
        <rPr>
          <b/>
          <sz val="9"/>
          <rFont val="宋体"/>
          <charset val="134"/>
        </rPr>
        <t>51422:</t>
      </r>
      <r>
        <rPr>
          <sz val="9"/>
          <rFont val="宋体"/>
          <charset val="134"/>
        </rPr>
        <t xml:space="preserve">&#10;test</t>
      </r>
    </text>
  </comment>
 */


var CommentXform = module.exports = function (model) {
  this.model = model;
};

utils.inherits(CommentXform, BaseXform, {
  get tag() {
    return 'r';
  },

  get richTextXform() {
    if (!this._richTextXform) {
      this._richTextXform = new RichTextXform();
    }

    return this._richTextXform;
  },

  render: function render(xmlStream, model) {
    var _this = this;

    model = model || this.model;
    xmlStream.openNode('comment', {
      ref: model.ref,
      authorId: 0
    });
    xmlStream.openNode('text');

    if (model && model.note && model.note.texts) {
      model.note.texts.forEach(function (text) {
        _this.richTextXform.render(xmlStream, text);
      });
    }

    xmlStream.closeNode();
    xmlStream.closeNode();
  },
  parseOpen: function parseOpen(node) {
    if (this.parser) {
      this.parser.parseOpen(node);
      return true;
    }

    switch (node.name) {
      case 'comment':
        this.model = _objectSpread({
          type: 'note',
          note: {
            texts: []
          }
        }, node.attributes);
        return true;

      case 'r':
        this.parser = this.richTextXform;
        this.parser.parseOpen(node);
        return true;

      default:
        return false;
    }
  },
  parseText: function parseText(text) {
    if (this.parser) {
      this.parser.parseText(text);
    }
  },
  parseClose: function parseClose(name) {
    switch (name) {
      case 'comment':
        return false;

      case 'r':
        this.model.note.texts.push(this.parser.model);
        this.parser = undefined;
        return true;

      default:
        if (this.parser) {
          this.parser.parseClose(name);
        }

        return true;
    }
  }
});


},{"../../../utils/utils":23,"../base-xform":28,"../strings/rich-text-xform":99}],36:[function(require,module,exports){
"use strict";

var XmlStream = require('../../../utils/xml-stream');

var utils = require('../../../utils/utils');

var BaseXform = require('../base-xform');

var CommentXform = require('./comment-xform');

var CommentsXform = module.exports = function () {
  this.map = {
    comment: new CommentXform()
  };
};

utils.inherits(CommentsXform, BaseXform, {
  COMMENTS_ATTRIBUTES: {
    xmlns: 'http://schemas.openxmlformats.org/spreadsheetml/2006/main'
  }
}, {
  render: function render(xmlStream, model) {
    var _this = this;

    model = model || this.model;
    xmlStream.openXml(XmlStream.StdDocAttributes);
    xmlStream.openNode('comments', CommentsXform.COMMENTS_ATTRIBUTES); // authors
    // TODO: support authors properly

    xmlStream.openNode('authors');
    xmlStream.leafNode('author', null, 'Author');
    xmlStream.closeNode(); // comments

    xmlStream.openNode('commentList');
    model.comments.forEach(function (comment) {
      _this.map.comment.render(xmlStream, comment);
    });
    xmlStream.closeNode();
    xmlStream.closeNode();
  },
  parseOpen: function parseOpen(node) {
    if (this.parser) {
      this.parser.parseOpen(node);
      return true;
    }

    switch (node.name) {
      case 'commentList':
        this.model = {
          comments: []
        };
        return true;

      case 'comment':
        this.parser = this.map.comment;
        this.parser.parseOpen(node);
        return true;

      default:
        return false;
    }
  },
  parseText: function parseText(text) {
    if (this.parser) {
      this.parser.parseText(text);
    }
  },
  parseClose: function parseClose(name) {
    switch (name) {
      case 'commentList':
        return false;

      case 'comment':
        this.model.comments.push(this.parser.model);
        this.parser = undefined;
        return true;

      default:
        if (this.parser) {
          this.parser.parseClose(name);
        }

        return true;
    }
  }
});


},{"../../../utils/utils":23,"../../../utils/xml-stream":24,"../base-xform":28,"./comment-xform":35}],37:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform'); // render the triangle in the cell for the comment


var VmlAnchorXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(VmlAnchorXform, _BaseXform);

  function VmlAnchorXform() {
    _classCallCheck(this, VmlAnchorXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(VmlAnchorXform).apply(this, arguments));
  }

  _createClass(VmlAnchorXform, [{
    key: "getAnchorRect",
    value: function getAnchorRect(anchor) {
      var l = Math.floor(anchor.left);
      var lf = Math.floor((anchor.left - l) * 68);
      var t = Math.floor(anchor.top);
      var tf = Math.floor((anchor.top - t) * 18);
      var r = Math.floor(anchor.right);
      var rf = Math.floor((anchor.right - r) * 68);
      var b = Math.floor(anchor.bottom);
      var bf = Math.floor((anchor.bottom - b) * 18);
      return [l, lf, t, tf, r, rf, b, bf];
    }
  }, {
    key: "getDefaultRect",
    value: function getDefaultRect(ref) {
      var l = ref.col;
      var lf = 6;
      var t = Math.max(ref.row - 2, 0);
      var tf = 14;
      var r = l + 2;
      var rf = 2;
      var b = t + 4;
      var bf = 16;
      return [l, lf, t, tf, r, rf, b, bf];
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      var rect = model.anchor ? this.getAnchorRect(model.anchor) : this.getDefaultRect(model.refAddress);
      xmlStream.leafNode('x:Anchor', null, rect.join(', '));
    }
  }, {
    key: "tag",
    get: function get() {
      return 'x:Anchor';
    }
  }]);

  return VmlAnchorXform;
}(BaseXform);

module.exports = VmlAnchorXform;


},{"../base-xform":28}],38:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var VmlAnchorXform = require('./vml-anchor-xform'); // render the triangle in the cell for the comment


var VmlNoteXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(VmlNoteXform, _BaseXform);

  function VmlNoteXform() {
    _classCallCheck(this, VmlNoteXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(VmlNoteXform).apply(this, arguments));
  }

  _createClass(VmlNoteXform, [{
    key: "render",
    value: function render(xmlStream, model, index) {
      xmlStream.openNode('v:shape', VmlNoteXform.V_SHAPE_ATTRIBUTES(index));
      xmlStream.leafNode('v:fill', {
        color2: 'infoBackground [80]'
      });
      xmlStream.leafNode('v:shadow', {
        color: 'none [81]',
        obscured: 't'
      });
      xmlStream.leafNode('v:path', {
        'o:connecttype': 'none'
      });
      xmlStream.openNode('v:textbox', {
        style: 'mso-direction-alt:auto'
      });
      xmlStream.leafNode('div', {
        style: 'text-align:left'
      });
      xmlStream.closeNode();
      xmlStream.openNode('x:ClientData', {
        ObjectType: 'Note'
      });
      xmlStream.leafNode('x:MoveWithCells');
      xmlStream.leafNode('x:SizeWithCells');
      VmlNoteXform.vmlAnchorXform.render(xmlStream, model);
      xmlStream.leafNode('x:AutoFill', null, 'False');
      xmlStream.leafNode('x:Row', null, model.refAddress.row - 1);
      xmlStream.leafNode('x:Column', null, model.refAddress.col - 1);
      xmlStream.closeNode();
      xmlStream.closeNode();
    }
  }, {
    key: "tag",
    get: function get() {
      return 'v:shape';
    }
  }]);

  return VmlNoteXform;
}(BaseXform);

module.exports = VmlNoteXform;

VmlNoteXform.V_SHAPE_ATTRIBUTES = function (index) {
  return {
    id: "_x0000_s".concat(1025 + index),
    type: '#_x0000_t202',
    style: 'position:absolute; margin-left:105.3pt;margin-top:10.5pt;width:97.8pt;height:59.1pt;z-index:1;visibility:hidden',
    fillcolor: 'infoBackground [80]',
    strokecolor: 'none [81]',
    'o:insetmode': 'auto'
  };
};

VmlNoteXform.vmlAnchorXform = new VmlAnchorXform();


},{"../base-xform":28,"./vml-anchor-xform":37}],39:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var XmlStream = require('../../../utils/xml-stream');

var BaseXform = require('../base-xform');

var VmlNoteXform = require('./vml-note-xform'); // This class is (currently) single purposed to insert the triangle
// drawing icons on commented cells


var VmlNotesXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(VmlNotesXform, _BaseXform);

  function VmlNotesXform() {
    _classCallCheck(this, VmlNotesXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(VmlNotesXform).apply(this, arguments));
  }

  _createClass(VmlNotesXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openXml(XmlStream.StdDocAttributes);
      xmlStream.openNode(this.tag, VmlNotesXform.DRAWING_ATTRIBUTES);
      xmlStream.openNode('o:shapelayout', {
        'v:ext': 'edit'
      });
      xmlStream.leafNode('o:idmap', {
        'v:ext': 'edit',
        data: 1
      });
      xmlStream.closeNode();
      xmlStream.openNode('v:shapetype', {
        id: '_x0000_t202',
        coordsize: '21600,21600',
        'o:spt': 202,
        path: 'm,l,21600r21600,l21600,xe'
      });
      xmlStream.leafNode('v:stroke', {
        joinstyle: 'miter'
      });
      xmlStream.leafNode('v:path', {
        gradientshapeok: 't',
        'o:connecttype': 'rect'
      });
      xmlStream.closeNode();
      model.comments.forEach(function (item, index) {
        VmlNotesXform.vmlCommentXform.render(xmlStream, item, index);
      });
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case this.tag:
          this.reset();
          this.model = {
            anchors: []
          };
          break;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
          }

          break;
      }

      return true;
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.model.anchors.push(this.parser.model);
          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case this.tag:
          return false;

        default:
          // could be some unrecognised tags
          return true;
      }
    }
  }, {
    key: "reconcile",
    value: function reconcile(model, options) {
      var _this = this;

      model.anchors.forEach(function (anchor) {
        if (anchor.br) {
          _this.map['xdr:twoCellAnchor'].reconcile(anchor, options);
        } else {
          _this.map['xdr:oneCellAnchor'].reconcile(anchor, options);
        }
      });
    }
  }, {
    key: "tag",
    get: function get() {
      return 'xml';
    }
  }]);

  return VmlNotesXform;
}(BaseXform);

VmlNotesXform.DRAWING_ATTRIBUTES = {
  'xmlns:v': 'urn:schemas-microsoft-com:vml',
  'xmlns:o': 'urn:schemas-microsoft-com:office:office',
  'xmlns:x': 'urn:schemas-microsoft-com:office:excel'
};
VmlNotesXform.vmlCommentXform = new VmlNoteXform();
module.exports = VmlNotesXform;


},{"../../../utils/xml-stream":24,"../base-xform":28,"./vml-note-xform":38}],40:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var AppHeadingPairsXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(AppHeadingPairsXform, _BaseXform);

  function AppHeadingPairsXform() {
    _classCallCheck(this, AppHeadingPairsXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(AppHeadingPairsXform).apply(this, arguments));
  }

  _createClass(AppHeadingPairsXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode('HeadingPairs');
      xmlStream.openNode('vt:vector', {
        size: 2,
        baseType: 'variant'
      });
      xmlStream.openNode('vt:variant');
      xmlStream.leafNode('vt:lpstr', undefined, 'Worksheets');
      xmlStream.closeNode();
      xmlStream.openNode('vt:variant');
      xmlStream.leafNode('vt:i4', undefined, model.length);
      xmlStream.closeNode();
      xmlStream.closeNode();
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      // no parsing
      return node.name === 'HeadingPairs';
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      return name !== 'HeadingPairs';
    }
  }]);

  return AppHeadingPairsXform;
}(BaseXform);

module.exports = AppHeadingPairsXform;


},{"../base-xform":28}],41:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var AppTitlesOfPartsXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(AppTitlesOfPartsXform, _BaseXform);

  function AppTitlesOfPartsXform() {
    _classCallCheck(this, AppTitlesOfPartsXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(AppTitlesOfPartsXform).apply(this, arguments));
  }

  _createClass(AppTitlesOfPartsXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode('TitlesOfParts');
      xmlStream.openNode('vt:vector', {
        size: model.length,
        baseType: 'lpstr'
      });
      model.forEach(function (sheet) {
        xmlStream.leafNode('vt:lpstr', undefined, sheet.name);
      });
      xmlStream.closeNode();
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      // no parsing
      return node.name === 'TitlesOfParts';
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      return name !== 'TitlesOfParts';
    }
  }]);

  return AppTitlesOfPartsXform;
}(BaseXform);

module.exports = AppTitlesOfPartsXform;


},{"../base-xform":28}],42:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var XmlStream = require('../../../utils/xml-stream');

var BaseXform = require('../base-xform');

var StringXform = require('../simple/string-xform');

var AppHeadingPairsXform = require('./app-heading-pairs-xform');

var AppTitleOfPartsXform = require('./app-titles-of-parts-xform');

var AppXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(AppXform, _BaseXform);

  function AppXform() {
    var _this;

    _classCallCheck(this, AppXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(AppXform).call(this));
    _this.map = {
      Company: new StringXform({
        tag: 'Company'
      }),
      Manager: new StringXform({
        tag: 'Manager'
      }),
      HeadingPairs: new AppHeadingPairsXform(),
      TitleOfParts: new AppTitleOfPartsXform()
    };
    return _this;
  }

  _createClass(AppXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openXml(XmlStream.StdDocAttributes);
      xmlStream.openNode('Properties', AppXform.PROPERTY_ATTRIBUTES);
      xmlStream.leafNode('Application', undefined, 'Microsoft Excel');
      xmlStream.leafNode('DocSecurity', undefined, '0');
      xmlStream.leafNode('ScaleCrop', undefined, 'false');
      this.map.HeadingPairs.render(xmlStream, model.worksheets);
      this.map.TitleOfParts.render(xmlStream, model.worksheets);
      this.map.Company.render(xmlStream, model.company || '');
      this.map.Manager.render(xmlStream, model.manager);
      xmlStream.leafNode('LinksUpToDate', undefined, 'false');
      xmlStream.leafNode('SharedDoc', undefined, 'false');
      xmlStream.leafNode('HyperlinksChanged', undefined, 'false');
      xmlStream.leafNode('AppVersion', undefined, '16.0300');
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case 'Properties':
          return true;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
            return true;
          } // there's a lot we don't bother to parse


          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case 'Properties':
          this.model = {
            worksheets: this.map.TitleOfParts.model,
            company: this.map.Company.model,
            manager: this.map.Manager.model
          };
          return false;

        default:
          return true;
      }
    }
  }]);

  return AppXform;
}(BaseXform);

AppXform.DateFormat = function (dt) {
  return dt.toISOString().replace(/[.]\d{3,6}/, '');
};

AppXform.DateAttrs = {
  'xsi:type': 'dcterms:W3CDTF'
};
AppXform.PROPERTY_ATTRIBUTES = {
  xmlns: 'http://schemas.openxmlformats.org/officeDocument/2006/extended-properties',
  'xmlns:vt': 'http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes'
};
module.exports = AppXform;


},{"../../../utils/xml-stream":24,"../base-xform":28,"../simple/string-xform":96,"./app-heading-pairs-xform":40,"./app-titles-of-parts-xform":41}],43:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var XmlStream = require('../../../utils/xml-stream');

var BaseXform = require('../base-xform'); // used for rendering the [Content_Types].xml file
// not used for parsing


var ContentTypesXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(ContentTypesXform, _BaseXform);

  function ContentTypesXform() {
    _classCallCheck(this, ContentTypesXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(ContentTypesXform).apply(this, arguments));
  }

  _createClass(ContentTypesXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openXml(XmlStream.StdDocAttributes);
      xmlStream.openNode('Types', ContentTypesXform.PROPERTY_ATTRIBUTES);
      var mediaHash = {};
      (model.media || []).forEach(function (medium) {
        if (medium.type === 'image') {
          var imageType = medium.extension;

          if (!mediaHash[imageType]) {
            mediaHash[imageType] = true;
            xmlStream.leafNode('Default', {
              Extension: imageType,
              ContentType: "image/".concat(imageType)
            });
          }
        }
      });
      xmlStream.leafNode('Default', {
        Extension: 'rels',
        ContentType: 'application/vnd.openxmlformats-package.relationships+xml'
      });
      xmlStream.leafNode('Default', {
        Extension: 'xml',
        ContentType: 'application/xml'
      });
      xmlStream.leafNode('Override', {
        PartName: '/xl/workbook.xml',
        ContentType: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml'
      });
      model.worksheets.forEach(function (worksheet) {
        var name = "/xl/worksheets/sheet".concat(worksheet.id, ".xml");
        xmlStream.leafNode('Override', {
          PartName: name,
          ContentType: 'application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml'
        });
      });
      xmlStream.leafNode('Override', {
        PartName: '/xl/theme/theme1.xml',
        ContentType: 'application/vnd.openxmlformats-officedocument.theme+xml'
      });
      xmlStream.leafNode('Override', {
        PartName: '/xl/styles.xml',
        ContentType: 'application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml'
      });
      var hasSharedStrings = model.sharedStrings && model.sharedStrings.count;

      if (hasSharedStrings) {
        xmlStream.leafNode('Override', {
          PartName: '/xl/sharedStrings.xml',
          ContentType: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sharedStrings+xml'
        });
      }

      if (model.tables) {
        model.tables.forEach(function (table) {
          xmlStream.leafNode('Override', {
            PartName: "/xl/tables/".concat(table.target),
            ContentType: 'application/vnd.openxmlformats-officedocument.spreadsheetml.table+xml'
          });
        });
      }

      if (model.drawings) {
        model.drawings.forEach(function (drawing) {
          xmlStream.leafNode('Override', {
            PartName: "/xl/drawings/".concat(drawing.name, ".xml"),
            ContentType: 'application/vnd.openxmlformats-officedocument.drawing+xml'
          });
        });
      }

      if (model.commentRefs) {
        xmlStream.leafNode('Default', {
          Extension: 'vml',
          ContentType: 'application/vnd.openxmlformats-officedocument.vmlDrawing'
        });
        model.commentRefs.forEach(function (_ref) {
          var commentName = _ref.commentName;
          xmlStream.leafNode('Override', {
            PartName: "/xl/".concat(commentName, ".xml"),
            ContentType: 'application/vnd.openxmlformats-officedocument.spreadsheetml.comments+xml'
          });
        });
      }

      xmlStream.leafNode('Override', {
        PartName: '/docProps/core.xml',
        ContentType: 'application/vnd.openxmlformats-package.core-properties+xml'
      });
      xmlStream.leafNode('Override', {
        PartName: '/docProps/app.xml',
        ContentType: 'application/vnd.openxmlformats-officedocument.extended-properties+xml'
      });
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen() {
      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }]);

  return ContentTypesXform;
}(BaseXform);

ContentTypesXform.PROPERTY_ATTRIBUTES = {
  xmlns: 'http://schemas.openxmlformats.org/package/2006/content-types'
};
module.exports = ContentTypesXform;


},{"../../../utils/xml-stream":24,"../base-xform":28}],44:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var XmlStream = require('../../../utils/xml-stream');

var BaseXform = require('../base-xform');

var DateXform = require('../simple/date-xform');

var StringXform = require('../simple/string-xform');

var IntegerXform = require('../simple/integer-xform');

var CoreXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(CoreXform, _BaseXform);

  function CoreXform() {
    var _this;

    _classCallCheck(this, CoreXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(CoreXform).call(this));
    _this.map = {
      'dc:creator': new StringXform({
        tag: 'dc:creator'
      }),
      'dc:title': new StringXform({
        tag: 'dc:title'
      }),
      'dc:subject': new StringXform({
        tag: 'dc:subject'
      }),
      'dc:description': new StringXform({
        tag: 'dc:description'
      }),
      'dc:identifier': new StringXform({
        tag: 'dc:identifier'
      }),
      'dc:language': new StringXform({
        tag: 'dc:language'
      }),
      'cp:keywords': new StringXform({
        tag: 'cp:keywords'
      }),
      'cp:category': new StringXform({
        tag: 'cp:category'
      }),
      'cp:lastModifiedBy': new StringXform({
        tag: 'cp:lastModifiedBy'
      }),
      'cp:lastPrinted': new DateXform({
        tag: 'cp:lastPrinted',
        format: CoreXform.DateFormat
      }),
      'cp:revision': new IntegerXform({
        tag: 'cp:revision'
      }),
      'cp:version': new StringXform({
        tag: 'cp:version'
      }),
      'cp:contentStatus': new StringXform({
        tag: 'cp:contentStatus'
      }),
      'cp:contentType': new StringXform({
        tag: 'cp:contentType'
      }),
      'dcterms:created': new DateXform({
        tag: 'dcterms:created',
        attrs: CoreXform.DateAttrs,
        format: CoreXform.DateFormat
      }),
      'dcterms:modified': new DateXform({
        tag: 'dcterms:modified',
        attrs: CoreXform.DateAttrs,
        format: CoreXform.DateFormat
      })
    };
    return _this;
  }

  _createClass(CoreXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openXml(XmlStream.StdDocAttributes);
      xmlStream.openNode('cp:coreProperties', CoreXform.CORE_PROPERTY_ATTRIBUTES);
      this.map['dc:creator'].render(xmlStream, model.creator);
      this.map['dc:title'].render(xmlStream, model.title);
      this.map['dc:subject'].render(xmlStream, model.subject);
      this.map['dc:description'].render(xmlStream, model.description);
      this.map['dc:identifier'].render(xmlStream, model.identifier);
      this.map['dc:language'].render(xmlStream, model.language);
      this.map['cp:keywords'].render(xmlStream, model.keywords);
      this.map['cp:category'].render(xmlStream, model.category);
      this.map['cp:lastModifiedBy'].render(xmlStream, model.lastModifiedBy);
      this.map['cp:lastPrinted'].render(xmlStream, model.lastPrinted);
      this.map['cp:revision'].render(xmlStream, model.revision);
      this.map['cp:version'].render(xmlStream, model.version);
      this.map['cp:contentStatus'].render(xmlStream, model.contentStatus);
      this.map['cp:contentType'].render(xmlStream, model.contentType);
      this.map['dcterms:created'].render(xmlStream, model.created);
      this.map['dcterms:modified'].render(xmlStream, model.modified);
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case 'cp:coreProperties':
        case 'coreProperties':
          return true;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
            return true;
          }

          throw new Error("Unexpected xml node in parseOpen: ".concat(JSON.stringify(node)));
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case 'cp:coreProperties':
        case 'coreProperties':
          this.model = {
            creator: this.map['dc:creator'].model,
            title: this.map['dc:title'].model,
            subject: this.map['dc:subject'].model,
            description: this.map['dc:description'].model,
            identifier: this.map['dc:identifier'].model,
            language: this.map['dc:language'].model,
            keywords: this.map['cp:keywords'].model,
            category: this.map['cp:category'].model,
            lastModifiedBy: this.map['cp:lastModifiedBy'].model,
            lastPrinted: this.map['cp:lastPrinted'].model,
            revision: this.map['cp:revision'].model,
            contentStatus: this.map['cp:contentStatus'].model,
            contentType: this.map['cp:contentType'].model,
            created: this.map['dcterms:created'].model,
            modified: this.map['dcterms:modified'].model
          };
          return false;

        default:
          throw new Error("Unexpected xml node in parseClose: ".concat(name));
      }
    }
  }]);

  return CoreXform;
}(BaseXform);

CoreXform.DateFormat = function (dt) {
  return dt.toISOString().replace(/[.]\d{3}/, '');
};

CoreXform.DateAttrs = {
  'xsi:type': 'dcterms:W3CDTF'
};
CoreXform.CORE_PROPERTY_ATTRIBUTES = {
  'xmlns:cp': 'http://schemas.openxmlformats.org/package/2006/metadata/core-properties',
  'xmlns:dc': 'http://purl.org/dc/elements/1.1/',
  'xmlns:dcterms': 'http://purl.org/dc/terms/',
  'xmlns:dcmitype': 'http://purl.org/dc/dcmitype/',
  'xmlns:xsi': 'http://www.w3.org/2001/XMLSchema-instance'
};
module.exports = CoreXform;


},{"../../../utils/xml-stream":24,"../base-xform":28,"../simple/date-xform":94,"../simple/integer-xform":95,"../simple/string-xform":96}],45:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var RelationshipXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(RelationshipXform, _BaseXform);

  function RelationshipXform() {
    _classCallCheck(this, RelationshipXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(RelationshipXform).apply(this, arguments));
  }

  _createClass(RelationshipXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.leafNode('Relationship', model);
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      switch (node.name) {
        case 'Relationship':
          this.model = node.attributes;
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }]);

  return RelationshipXform;
}(BaseXform);

module.exports = RelationshipXform;


},{"../base-xform":28}],46:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var XmlStream = require('../../../utils/xml-stream');

var BaseXform = require('../base-xform');

var RelationshipXform = require('./relationship-xform');

var RelationshipsXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(RelationshipsXform, _BaseXform);

  function RelationshipsXform() {
    var _this;

    _classCallCheck(this, RelationshipsXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(RelationshipsXform).call(this));
    _this.map = {
      Relationship: new RelationshipXform()
    };
    return _this;
  }

  _createClass(RelationshipsXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      var _this2 = this;

      model = model || this._values;
      xmlStream.openXml(XmlStream.StdDocAttributes);
      xmlStream.openNode('Relationships', RelationshipsXform.RELATIONSHIPS_ATTRIBUTES);
      model.forEach(function (relationship) {
        _this2.map.Relationship.render(xmlStream, relationship);
      });
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case 'Relationships':
          this.model = [];
          return true;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
            return true;
          }

          throw new Error("Unexpected xml node in parseOpen: ".concat(JSON.stringify(node)));
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.model.push(this.parser.model);
          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case 'Relationships':
          return false;

        default:
          throw new Error("Unexpected xml node in parseClose: ".concat(name));
      }
    }
  }]);

  return RelationshipsXform;
}(BaseXform);

RelationshipsXform.RELATIONSHIPS_ATTRIBUTES = {
  xmlns: 'http://schemas.openxmlformats.org/package/2006/relationships'
};
module.exports = RelationshipsXform;


},{"../../../utils/xml-stream":24,"../base-xform":28,"./relationship-xform":45}],47:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var BaseCellAnchorXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(BaseCellAnchorXform, _BaseXform);

  function BaseCellAnchorXform() {
    _classCallCheck(this, BaseCellAnchorXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(BaseCellAnchorXform).apply(this, arguments));
  }

  _createClass(BaseCellAnchorXform, [{
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case this.tag:
          this.reset();
          this.model = {
            range: {
              editAs: node.attributes.editAs || 'oneCell'
            }
          };
          break;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
          }

          break;
      }

      return true;
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "reconcilePicture",
    value: function reconcilePicture(model, options) {
      if (model && model.rId) {
        var rel = options.rels[model.rId];
        var match = rel.Target.match(/.*\/media\/(.+[.][a-z]{3,4})/);

        if (match) {
          var name = match[1];
          var mediaId = options.mediaIndex[name];
          return options.media[mediaId];
        }
      }

      return undefined;
    }
  }]);

  return BaseCellAnchorXform;
}(BaseXform);

module.exports = BaseCellAnchorXform;


},{"../base-xform":28}],48:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var BlipXform = require('./blip-xform');

var BlipFillXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(BlipFillXform, _BaseXform);

  function BlipFillXform() {
    var _this;

    _classCallCheck(this, BlipFillXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(BlipFillXform).call(this));
    _this.map = {
      'a:blip': new BlipXform()
    };
    return _this;
  }

  _createClass(BlipFillXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode(this.tag);
      this.map['a:blip'].render(xmlStream, model); // TODO: options for this + parsing

      xmlStream.openNode('a:stretch');
      xmlStream.leafNode('a:fillRect');
      xmlStream.closeNode();
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case this.tag:
          this.reset();
          break;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
          }

          break;
      }

      return true;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case this.tag:
          this.model = this.map['a:blip'].model;
          return false;

        default:
          return true;
      }
    }
  }, {
    key: "tag",
    get: function get() {
      return 'xdr:blipFill';
    }
  }]);

  return BlipFillXform;
}(BaseXform);

module.exports = BlipFillXform;


},{"../base-xform":28,"./blip-xform":49}],49:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var BlipXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(BlipXform, _BaseXform);

  function BlipXform() {
    _classCallCheck(this, BlipXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(BlipXform).apply(this, arguments));
  }

  _createClass(BlipXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.leafNode(this.tag, {
        'xmlns:r': 'http://schemas.openxmlformats.org/officeDocument/2006/relationships',
        'r:embed': model.rId,
        cstate: 'print'
      }); // TODO: handle children (e.g. a:extLst=>a:ext=>a14:useLocalDpi
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      switch (node.name) {
        case this.tag:
          this.model = {
            rId: node.attributes['r:embed']
          };
          return true;

        default:
          return true;
      }
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      switch (name) {
        case this.tag:
          return false;

        default:
          // unprocessed internal nodes
          return true;
      }
    }
  }, {
    key: "tag",
    get: function get() {
      return 'a:blip';
    }
  }]);

  return BlipXform;
}(BaseXform);

module.exports = BlipXform;


},{"../base-xform":28}],50:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var IntegerXform = require('../simple/integer-xform');

var CellPositionXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(CellPositionXform, _BaseXform);

  function CellPositionXform(options) {
    var _this;

    _classCallCheck(this, CellPositionXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(CellPositionXform).call(this));
    _this.tag = options.tag;
    _this.map = {
      'xdr:col': new IntegerXform({
        tag: 'xdr:col',
        zero: true
      }),
      'xdr:colOff': new IntegerXform({
        tag: 'xdr:colOff',
        zero: true
      }),
      'xdr:row': new IntegerXform({
        tag: 'xdr:row',
        zero: true
      }),
      'xdr:rowOff': new IntegerXform({
        tag: 'xdr:rowOff',
        zero: true
      })
    };
    return _this;
  }

  _createClass(CellPositionXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode(this.tag);
      this.map['xdr:col'].render(xmlStream, model.nativeCol);
      this.map['xdr:colOff'].render(xmlStream, model.nativeColOff);
      this.map['xdr:row'].render(xmlStream, model.nativeRow);
      this.map['xdr:rowOff'].render(xmlStream, model.nativeRowOff);
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case this.tag:
          this.reset();
          break;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
          }

          break;
      }

      return true;
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case this.tag:
          this.model = {
            nativeCol: this.map['xdr:col'].model,
            nativeColOff: this.map['xdr:colOff'].model,
            nativeRow: this.map['xdr:row'].model,
            nativeRowOff: this.map['xdr:rowOff'].model
          };
          return false;

        default:
          // not quite sure how we get here!
          return true;
      }
    }
  }]);

  return CellPositionXform;
}(BaseXform);

module.exports = CellPositionXform;


},{"../base-xform":28,"../simple/integer-xform":95}],51:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var colCache = require('../../../utils/col-cache');

var XmlStream = require('../../../utils/xml-stream');

var BaseXform = require('../base-xform');

var TwoCellAnchorXform = require('./two-cell-anchor-xform');

var OneCellAnchorXform = require('./one-cell-anchor-xform');

function getAnchorType(model) {
  var range = typeof model.range === 'string' ? colCache.decode(model.range) : model.range;
  return range.br ? 'xdr:twoCellAnchor' : 'xdr:oneCellAnchor';
}

var DrawingXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(DrawingXform, _BaseXform);

  function DrawingXform() {
    var _this;

    _classCallCheck(this, DrawingXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(DrawingXform).call(this));
    _this.map = {
      'xdr:twoCellAnchor': new TwoCellAnchorXform(),
      'xdr:oneCellAnchor': new OneCellAnchorXform()
    };
    return _this;
  }

  _createClass(DrawingXform, [{
    key: "prepare",
    value: function prepare(model) {
      var _this2 = this;

      model.anchors.forEach(function (item, index) {
        item.anchorType = getAnchorType(item);
        var anchor = _this2.map[item.anchorType];
        anchor.prepare(item, {
          index: index
        });
      });
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      var _this3 = this;

      xmlStream.openXml(XmlStream.StdDocAttributes);
      xmlStream.openNode(this.tag, DrawingXform.DRAWING_ATTRIBUTES);
      model.anchors.forEach(function (item) {
        var anchor = _this3.map[item.anchorType];
        anchor.render(xmlStream, item);
      });
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case this.tag:
          this.reset();
          this.model = {
            anchors: []
          };
          break;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
          }

          break;
      }

      return true;
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.model.anchors.push(this.parser.model);
          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case this.tag:
          return false;

        default:
          // could be some unrecognised tags
          return true;
      }
    }
  }, {
    key: "reconcile",
    value: function reconcile(model, options) {
      var _this4 = this;

      model.anchors.forEach(function (anchor) {
        if (anchor.br) {
          _this4.map['xdr:twoCellAnchor'].reconcile(anchor, options);
        } else {
          _this4.map['xdr:oneCellAnchor'].reconcile(anchor, options);
        }
      });
    }
  }, {
    key: "tag",
    get: function get() {
      return 'xdr:wsDr';
    }
  }]);

  return DrawingXform;
}(BaseXform);

DrawingXform.DRAWING_ATTRIBUTES = {
  'xmlns:xdr': 'http://schemas.openxmlformats.org/drawingml/2006/spreadsheetDrawing',
  'xmlns:a': 'http://schemas.openxmlformats.org/drawingml/2006/main'
};
module.exports = DrawingXform;


},{"../../../utils/col-cache":17,"../../../utils/xml-stream":24,"../base-xform":28,"./one-cell-anchor-xform":54,"./two-cell-anchor-xform":57}],52:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');
/** https://en.wikipedia.org/wiki/Office_Open_XML_file_formats#DrawingML */


var EMU_PER_PIXEL_AT_96_DPI = 9525;

var ExtXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(ExtXform, _BaseXform);

  function ExtXform(options) {
    var _this;

    _classCallCheck(this, ExtXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(ExtXform).call(this));
    _this.tag = options.tag;
    _this.map = {};
    return _this;
  }

  _createClass(ExtXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode(this.tag);
      var width = Math.floor(model.width * EMU_PER_PIXEL_AT_96_DPI);
      var height = Math.floor(model.height * EMU_PER_PIXEL_AT_96_DPI);
      xmlStream.addAttribute('cx', width);
      xmlStream.addAttribute('cy', height);
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === this.tag) {
        this.model = {
          width: parseInt(node.attributes.cx || '0', 10) / EMU_PER_PIXEL_AT_96_DPI,
          height: parseInt(node.attributes.cy || '0', 10) / EMU_PER_PIXEL_AT_96_DPI
        };
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText()
    /* text */
    {}
  }, {
    key: "parseClose",
    value: function parseClose()
    /* name */
    {
      return false;
    }
  }]);

  return ExtXform;
}(BaseXform);

module.exports = ExtXform;


},{"../base-xform":28}],53:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var StaticXform = require('../static-xform');

var NvPicPrXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(NvPicPrXform, _BaseXform);

  function NvPicPrXform() {
    _classCallCheck(this, NvPicPrXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(NvPicPrXform).apply(this, arguments));
  }

  _createClass(NvPicPrXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      var xform = new StaticXform({
        tag: this.tag,
        c: [{
          tag: 'xdr:cNvPr',
          $: {
            id: model.index,
            name: "Picture ".concat(model.index)
          },
          c: [{
            tag: 'a:extLst',
            c: [{
              tag: 'a:ext',
              $: {
                uri: '{FF2B5EF4-FFF2-40B4-BE49-F238E27FC236}'
              },
              c: [{
                tag: 'a16:creationId',
                $: {
                  'xmlns:a16': 'http://schemas.microsoft.com/office/drawing/2014/main',
                  id: '{00000000-0008-0000-0000-000002000000}'
                }
              }]
            }]
          }]
        }, {
          tag: 'xdr:cNvPicPr',
          c: [{
            tag: 'a:picLocks',
            $: {
              noChangeAspect: '1'
            }
          }]
        }]
      });
      xform.render(xmlStream);
    }
  }, {
    key: "tag",
    get: function get() {
      return 'xdr:nvPicPr';
    }
  }]);

  return NvPicPrXform;
}(BaseXform);

module.exports = NvPicPrXform;


},{"../base-xform":28,"../static-xform":97}],54:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseCellAnchorXform = require('./base-cell-anchor-xform');

var StaticXform = require('../static-xform');

var CellPositionXform = require('./cell-position-xform');

var ExtXform = require('./ext-xform');

var PicXform = require('./pic-xform');

var OneCellAnchorXform =
/*#__PURE__*/
function (_BaseCellAnchorXform) {
  _inherits(OneCellAnchorXform, _BaseCellAnchorXform);

  function OneCellAnchorXform() {
    var _this;

    _classCallCheck(this, OneCellAnchorXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(OneCellAnchorXform).call(this));
    _this.map = {
      'xdr:from': new CellPositionXform({
        tag: 'xdr:from'
      }),
      'xdr:ext': new ExtXform({
        tag: 'xdr:ext'
      }),
      'xdr:pic': new PicXform(),
      'xdr:clientData': new StaticXform({
        tag: 'xdr:clientData'
      })
    };
    return _this;
  }

  _createClass(OneCellAnchorXform, [{
    key: "prepare",
    value: function prepare(model, options) {
      this.map['xdr:pic'].prepare(model.picture, options);
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode(this.tag, {
        editAs: model.range.editAs || 'oneCell'
      });
      this.map['xdr:from'].render(xmlStream, model.range.tl);
      this.map['xdr:ext'].render(xmlStream, model.range.ext);
      this.map['xdr:pic'].render(xmlStream, model.picture);
      this.map['xdr:clientData'].render(xmlStream, {});
      xmlStream.closeNode();
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case this.tag:
          this.model.range.tl = this.map['xdr:from'].model;
          this.model.range.ext = this.map['xdr:ext'].model;
          this.model.picture = this.map['xdr:pic'].model;
          return false;

        default:
          // could be some unrecognised tags
          return true;
      }
    }
  }, {
    key: "reconcile",
    value: function reconcile(model, options) {
      model.medium = this.reconcilePicture(model.picture, options);
    }
  }, {
    key: "tag",
    get: function get() {
      return 'xdr:oneCellAnchor';
    }
  }]);

  return OneCellAnchorXform;
}(BaseCellAnchorXform);

module.exports = OneCellAnchorXform;


},{"../static-xform":97,"./base-cell-anchor-xform":47,"./cell-position-xform":50,"./ext-xform":52,"./pic-xform":55}],55:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var StaticXform = require('../static-xform');

var BlipFillXform = require('./blip-fill-xform');

var NvPicPrXform = require('./nv-pic-pr-xform');

var spPrJSON = require('./sp-pr');

var PicXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(PicXform, _BaseXform);

  function PicXform() {
    var _this;

    _classCallCheck(this, PicXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(PicXform).call(this));
    _this.map = {
      'xdr:nvPicPr': new NvPicPrXform(),
      'xdr:blipFill': new BlipFillXform(),
      'xdr:spPr': new StaticXform(spPrJSON)
    };
    return _this;
  }

  _createClass(PicXform, [{
    key: "prepare",
    value: function prepare(model, options) {
      model.index = options.index + 1;
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode(this.tag);
      this.map['xdr:nvPicPr'].render(xmlStream, model);
      this.map['xdr:blipFill'].render(xmlStream, model);
      this.map['xdr:spPr'].render(xmlStream, model);
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case this.tag:
          this.reset();
          break;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
          }

          break;
      }

      return true;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.mergeModel(this.parser.model);
          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case this.tag:
          return false;

        default:
          // not quite sure how we get here!
          return true;
      }
    }
  }, {
    key: "tag",
    get: function get() {
      return 'xdr:pic';
    }
  }]);

  return PicXform;
}(BaseXform);

module.exports = PicXform;


},{"../base-xform":28,"../static-xform":97,"./blip-fill-xform":48,"./nv-pic-pr-xform":53,"./sp-pr":56}],56:[function(require,module,exports){
"use strict";

module.exports = {
  tag: 'xdr:spPr',
  c: [{
    tag: 'a:xfrm',
    c: [{
      tag: 'a:off',
      $: {
        x: '0',
        y: '0'
      }
    }, {
      tag: 'a:ext',
      $: {
        cx: '0',
        cy: '0'
      }
    }]
  }, {
    tag: 'a:prstGeom',
    $: {
      prst: 'rect'
    },
    c: [{
      tag: 'a:avLst'
    }]
  }]
};


},{}],57:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseCellAnchorXform = require('./base-cell-anchor-xform');

var StaticXform = require('../static-xform');

var CellPositionXform = require('./cell-position-xform');

var PicXform = require('./pic-xform');

var TwoCellAnchorXform =
/*#__PURE__*/
function (_BaseCellAnchorXform) {
  _inherits(TwoCellAnchorXform, _BaseCellAnchorXform);

  function TwoCellAnchorXform() {
    var _this;

    _classCallCheck(this, TwoCellAnchorXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(TwoCellAnchorXform).call(this));
    _this.map = {
      'xdr:from': new CellPositionXform({
        tag: 'xdr:from'
      }),
      'xdr:to': new CellPositionXform({
        tag: 'xdr:to'
      }),
      'xdr:pic': new PicXform(),
      'xdr:clientData': new StaticXform({
        tag: 'xdr:clientData'
      })
    };
    return _this;
  }

  _createClass(TwoCellAnchorXform, [{
    key: "prepare",
    value: function prepare(model, options) {
      this.map['xdr:pic'].prepare(model.picture, options);
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode(this.tag, {
        editAs: model.range.editAs || 'oneCell'
      });
      this.map['xdr:from'].render(xmlStream, model.range.tl);
      this.map['xdr:to'].render(xmlStream, model.range.br);
      this.map['xdr:pic'].render(xmlStream, model.picture);
      this.map['xdr:clientData'].render(xmlStream, {});
      xmlStream.closeNode();
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case this.tag:
          this.model.range.tl = this.map['xdr:from'].model;
          this.model.range.br = this.map['xdr:to'].model;
          this.model.picture = this.map['xdr:pic'].model;
          return false;

        default:
          // could be some unrecognised tags
          return true;
      }
    }
  }, {
    key: "reconcile",
    value: function reconcile(model, options) {
      model.medium = this.reconcilePicture(model.picture, options);
    }
  }, {
    key: "tag",
    get: function get() {
      return 'xdr:twoCellAnchor';
    }
  }]);

  return TwoCellAnchorXform;
}(BaseCellAnchorXform);

module.exports = TwoCellAnchorXform;


},{"../static-xform":97,"./base-cell-anchor-xform":47,"./cell-position-xform":50,"./pic-xform":55}],58:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('./base-xform');

var ListXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(ListXform, _BaseXform);

  function ListXform(options) {
    var _this;

    _classCallCheck(this, ListXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(ListXform).call(this));
    _this.tag = options.tag;
    _this.always = !!options.always;
    _this.count = options.count;
    _this.empty = options.empty;
    _this.$count = options.$count || 'count';
    _this.$ = options.$;
    _this.childXform = options.childXform;
    _this.maxItems = options.maxItems;
    return _this;
  }

  _createClass(ListXform, [{
    key: "prepare",
    value: function prepare(model, options) {
      var childXform = this.childXform;

      if (model) {
        model.forEach(function (childModel, index) {
          options.index = index;
          childXform.prepare(childModel, options);
        });
      }
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      if (this.always || model && model.length) {
        xmlStream.openNode(this.tag, this.$);

        if (this.count) {
          xmlStream.addAttribute(this.$count, model && model.length || 0);
        }

        var childXform = this.childXform;
        (model || []).forEach(function (childModel, index) {
          childXform.render(xmlStream, childModel, index);
        });
        xmlStream.closeNode();
      } else if (this.empty) {
        xmlStream.leafNode(this.tag);
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case this.tag:
          this.model = [];
          return true;

        default:
          if (this.childXform.parseOpen(node)) {
            this.parser = this.childXform;
            return true;
          }

          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.model.push(this.parser.model);
          this.parser = undefined;

          if (this.maxItems && this.model.length > this.maxItems) {
            throw new Error("Max ".concat(this.childXform.tag, " count exceeded"));
          }
        }

        return true;
      }

      return false;
    }
  }, {
    key: "reconcile",
    value: function reconcile(model, options) {
      if (model) {
        var childXform = this.childXform;
        model.forEach(function (childModel) {
          childXform.reconcile(childModel, options);
        });
      }
    }
  }]);

  return ListXform;
}(BaseXform);

module.exports = ListXform;


},{"./base-xform":28}],59:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var colCache = require('../../../utils/col-cache');

var BaseXform = require('../base-xform');

var AutoFilterXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(AutoFilterXform, _BaseXform);

  function AutoFilterXform() {
    _classCallCheck(this, AutoFilterXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(AutoFilterXform).apply(this, arguments));
  }

  _createClass(AutoFilterXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model) {
        if (typeof model === 'string') {
          // assume range
          xmlStream.leafNode('autoFilter', {
            ref: model
          });
        } else {
          var getAddress = function getAddress(addr) {
            if (typeof addr === 'string') {
              return addr;
            }

            return colCache.getAddress(addr.row, addr.column).address;
          };

          var firstAddress = getAddress(model.from);
          var secondAddress = getAddress(model.to);

          if (firstAddress && secondAddress) {
            xmlStream.leafNode('autoFilter', {
              ref: "".concat(firstAddress, ":").concat(secondAddress)
            });
          }
        }
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === 'autoFilter') {
        this.model = node.attributes.ref;
      }
    }
  }, {
    key: "tag",
    get: function get() {
      return 'autoFilter';
    }
  }]);

  return AutoFilterXform;
}(BaseXform);

module.exports = AutoFilterXform;


},{"../../../utils/col-cache":17,"../base-xform":28}],60:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var utils = require('../../../utils/utils');

var BaseXform = require('../base-xform');

var Range = require('../../../doc/range');

var Enums = require('../../../doc/enums');

var RichTextXform = require('../strings/rich-text-xform');

function getValueType(v) {
  if (v === null || v === undefined) {
    return Enums.ValueType.Null;
  }

  if (v instanceof String || typeof v === 'string') {
    return Enums.ValueType.String;
  }

  if (typeof v === 'number') {
    return Enums.ValueType.Number;
  }

  if (typeof v === 'boolean') {
    return Enums.ValueType.Boolean;
  }

  if (v instanceof Date) {
    return Enums.ValueType.Date;
  }

  if (v.text && v.hyperlink) {
    return Enums.ValueType.Hyperlink;
  }

  if (v.formula) {
    return Enums.ValueType.Formula;
  }

  if (v.error) {
    return Enums.ValueType.Error;
  }

  throw new Error('I could not understand type of value');
}

function getEffectiveCellType(cell) {
  switch (cell.type) {
    case Enums.ValueType.Formula:
      return getValueType(cell.result);

    default:
      return cell.type;
  }
}

var CellXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(CellXform, _BaseXform);

  function CellXform() {
    var _this;

    _classCallCheck(this, CellXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(CellXform).call(this));
    _this.richTextXForm = new RichTextXform();
    return _this;
  }

  _createClass(CellXform, [{
    key: "prepare",
    value: function prepare(model, options) {
      var styleId = options.styles.addStyleModel(model.style || {}, getEffectiveCellType(model));

      if (styleId) {
        model.styleId = styleId;
      }

      if (model.comment) {
        options.comments.push(_objectSpread({}, model.comment, {
          ref: model.address
        }));
      }

      switch (model.type) {
        case Enums.ValueType.String:
          if (options.sharedStrings) {
            model.ssId = options.sharedStrings.add(model.value);
          }

          break;

        case Enums.ValueType.Date:
          if (options.date1904) {
            model.date1904 = true;
          }

          break;

        case Enums.ValueType.Hyperlink:
          if (options.sharedStrings && model.text !== undefined && model.text !== null) {
            model.ssId = options.sharedStrings.add(model.text);
          }

          options.hyperlinks.push({
            address: model.address,
            target: model.hyperlink,
            tooltip: model.tooltip
          });
          break;

        case Enums.ValueType.Merge:
          options.merges.add(model);
          break;

        case Enums.ValueType.Formula:
          if (options.date1904) {
            // in case valueType is date
            model.date1904 = true;
          }

          if (model.shareType === 'shared') {
            model.si = options.siFormulae++;
          }

          if (model.formula) {
            options.formulae[model.address] = model;
          } else if (model.sharedFormula) {
            var master = options.formulae[model.sharedFormula];

            if (!master) {
              throw new Error('Shared Formula master must exist above and or left of clone');
            }

            if (master.si === undefined) {
              master.shareType = 'shared';
              master.si = options.siFormulae++;
              master.range = new Range(master.address, model.address);
            } else if (master.range) {
              master.range.expandToAddress(model.address);
            }

            model.si = master.si;
          }

          break;

        default:
          break;
      }
    }
  }, {
    key: "renderFormula",
    value: function renderFormula(xmlStream, model) {
      var attrs = null;

      switch (model.shareType) {
        case 'shared':
          attrs = {
            t: 'shared',
            ref: model.ref || model.range.range,
            si: model.si
          };
          break;

        case 'array':
          attrs = {
            t: 'array',
            ref: model.ref
          };
          break;

        default:
          if (model.si !== undefined) {
            attrs = {
              t: 'shared',
              si: model.si
            };
          }

          break;
      }

      switch (getValueType(model.result)) {
        case Enums.ValueType.Null:
          // ?
          xmlStream.leafNode('f', attrs, model.formula);
          break;

        case Enums.ValueType.String:
          // oddly, formula results don't ever use shared strings
          xmlStream.addAttribute('t', 'str');
          xmlStream.leafNode('f', attrs, model.formula);
          xmlStream.leafNode('v', null, model.result);
          break;

        case Enums.ValueType.Number:
          xmlStream.leafNode('f', attrs, model.formula);
          xmlStream.leafNode('v', null, model.result);
          break;

        case Enums.ValueType.Boolean:
          xmlStream.addAttribute('t', 'b');
          xmlStream.leafNode('f', attrs, model.formula);
          xmlStream.leafNode('v', null, model.result ? 1 : 0);
          break;

        case Enums.ValueType.Error:
          xmlStream.addAttribute('t', 'e');
          xmlStream.leafNode('f', attrs, model.formula);
          xmlStream.leafNode('v', null, model.result.error);
          break;

        case Enums.ValueType.Date:
          xmlStream.leafNode('f', attrs, model.formula);
          xmlStream.leafNode('v', null, utils.dateToExcel(model.result, model.date1904));
          break;
        // case Enums.ValueType.Hyperlink: // ??
        // case Enums.ValueType.Formula:

        default:
          throw new Error('I could not understand type of value');
      }
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      var _this2 = this;

      if (model.type === Enums.ValueType.Null && !model.styleId) {
        // if null and no style, exit
        return;
      }

      xmlStream.openNode('c');
      xmlStream.addAttribute('r', model.address);

      if (model.styleId) {
        xmlStream.addAttribute('s', model.styleId);
      }

      switch (model.type) {
        case Enums.ValueType.Null:
          break;

        case Enums.ValueType.Number:
          xmlStream.leafNode('v', null, model.value);
          break;

        case Enums.ValueType.Boolean:
          xmlStream.addAttribute('t', 'b');
          xmlStream.leafNode('v', null, model.value ? '1' : '0');
          break;

        case Enums.ValueType.Error:
          xmlStream.addAttribute('t', 'e');
          xmlStream.leafNode('v', null, model.value.error);
          break;

        case Enums.ValueType.String:
          if (model.ssId !== undefined) {
            xmlStream.addAttribute('t', 's');
            xmlStream.leafNode('v', null, model.ssId);
          } else if (model.value && model.value.richText) {
            xmlStream.addAttribute('t', 'inlineStr');
            xmlStream.openNode('is');
            model.value.richText.forEach(function (text) {
              _this2.richTextXForm.render(xmlStream, text);
            });
            xmlStream.closeNode('is');
          } else {
            xmlStream.addAttribute('t', 'str');
            xmlStream.leafNode('v', null, model.value);
          }

          break;

        case Enums.ValueType.Date:
          xmlStream.leafNode('v', null, utils.dateToExcel(model.value, model.date1904));
          break;

        case Enums.ValueType.Hyperlink:
          if (model.ssId !== undefined) {
            xmlStream.addAttribute('t', 's');
            xmlStream.leafNode('v', null, model.ssId);
          } else {
            xmlStream.addAttribute('t', 'str');
            xmlStream.leafNode('v', null, model.text);
          }

          break;

        case Enums.ValueType.Formula:
          this.renderFormula(xmlStream, model);
          break;

        case Enums.ValueType.Merge:
          // nothing to add
          break;

        default:
          break;
      }

      xmlStream.closeNode(); // </c>
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case 'c':
          // const address = colCache.decodeAddress(node.attributes.r);
          this.model = {
            address: node.attributes.r
          };
          this.t = node.attributes.t;

          if (node.attributes.s) {
            this.model.styleId = parseInt(node.attributes.s, 10);
          }

          return true;

        case 'f':
          this.currentNode = 'f';
          this.model.si = node.attributes.si;
          this.model.shareType = node.attributes.t;
          this.model.ref = node.attributes.ref;
          return true;

        case 'v':
          this.currentNode = 'v';
          return true;

        case 't':
          this.currentNode = 't';
          return true;

        case 'r':
          this.parser = this.richTextXForm;
          this.parser.parseOpen(node);
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
        return;
      }

      switch (this.currentNode) {
        case 'f':
          this.model.formula = this.model.formula ? this.model.formula + text : text;
          break;

        case 'v':
        case 't':
          if (this.model.value && this.model.value.richText) {
            this.model.value.richText.text = this.model.value.richText.text ? this.model.value.richText.text + text : text;
          } else {
            this.model.value = this.model.value ? this.model.value + text : text;
          }

          break;

        default:
          break;
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      switch (name) {
        case 'c':
          {
            var model = this.model; // first guess on cell type

            if (model.formula || model.shareType) {
              model.type = Enums.ValueType.Formula;

              if (model.value) {
                if (this.t === 'str') {
                  model.result = utils.xmlDecode(model.value);
                } else if (this.t === 'b') {
                  model.result = parseInt(model.value, 10) !== 0;
                } else if (this.t === 'e') {
                  model.result = {
                    error: model.value
                  };
                } else {
                  model.result = parseFloat(model.value);
                }

                model.value = undefined;
              }
            } else if (model.value !== undefined) {
              switch (this.t) {
                case 's':
                  model.type = Enums.ValueType.String;
                  model.value = parseInt(model.value, 10);
                  break;

                case 'str':
                  model.type = Enums.ValueType.String;
                  model.value = utils.xmlDecode(model.value);
                  break;

                case 'inlineStr':
                  model.type = Enums.ValueType.String;
                  break;

                case 'b':
                  model.type = Enums.ValueType.Boolean;
                  model.value = parseInt(model.value, 10) !== 0;
                  break;

                case 'e':
                  model.type = Enums.ValueType.Error;
                  model.value = {
                    error: model.value
                  };
                  break;

                default:
                  model.type = Enums.ValueType.Number;
                  model.value = parseFloat(model.value);
                  break;
              }
            } else if (model.styleId) {
              model.type = Enums.ValueType.Null;
            } else {
              model.type = Enums.ValueType.Merge;
            }

            return false;
          }

        case 'f':
        case 'v':
        case 'is':
          this.currentNode = undefined;
          return true;

        case 't':
          if (this.parser) {
            this.parser.parseClose(name);
            return true;
          }

          this.currentNode = undefined;
          return true;

        case 'r':
          this.model.value = this.model.value || {};
          this.model.value.richText = this.model.value.richText || [];
          this.model.value.richText.push(this.parser.model);
          this.parser = undefined;
          this.currentNode = undefined;
          return true;

        default:
          if (this.parser) {
            this.parser.parseClose(name);
            return true;
          }

          return false;
      }
    }
  }, {
    key: "reconcile",
    value: function reconcile(model, options) {
      var style = model.styleId && options.styles && options.styles.getStyleModel(model.styleId);

      if (style) {
        model.style = style;
      }

      if (model.styleId !== undefined) {
        model.styleId = undefined;
      }

      switch (model.type) {
        case Enums.ValueType.String:
          if (typeof model.value === 'number') {
            if (options.sharedStrings) {
              model.value = options.sharedStrings.getString(model.value);
            }
          }

          if (model.value.richText) {
            model.type = Enums.ValueType.RichText;
          }

          break;

        case Enums.ValueType.Number:
          if (style && utils.isDateFmt(style.numFmt)) {
            model.type = Enums.ValueType.Date;
            model.value = utils.excelToDate(model.value, options.date1904);
          }

          break;

        case Enums.ValueType.Formula:
          if (model.result !== undefined && style && utils.isDateFmt(style.numFmt)) {
            model.result = utils.excelToDate(model.result, options.date1904);
          }

          if (model.shareType === 'shared') {
            if (model.ref) {
              // master
              options.formulae[model.si] = model.address;
            } else {
              // slave
              model.sharedFormula = options.formulae[model.si];
              delete model.shareType;
            }

            delete model.si;
          }

          break;

        default:
          break;
      } // look for hyperlink


      var hyperlink = options.hyperlinkMap[model.address];

      if (hyperlink) {
        if (model.type === Enums.ValueType.Formula) {
          model.text = model.result;
          model.result = undefined;
        } else {
          model.text = model.value;
          model.value = undefined;
        }

        model.type = Enums.ValueType.Hyperlink;
        model.hyperlink = hyperlink;
      }

      var comment = options.commentsMap && options.commentsMap[model.address];

      if (comment) {
        model.comment = comment;
      }
    }
  }, {
    key: "tag",
    get: function get() {
      return 'c';
    }
  }]);

  return CellXform;
}(BaseXform);

module.exports = CellXform;


},{"../../../doc/enums":7,"../../../doc/range":10,"../../../utils/utils":23,"../base-xform":28,"../strings/rich-text-xform":99}],61:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var uuid = require('uuid');

var BaseXform = require('../../base-xform');

var Range = require('../../../../doc/range');

var DatabarXform = require('./databar-xform');

var ExtLstRefXform = require('./ext-lst-ref-xform');

var FormulaXform = require('./formula-xform');

var ColorScaleXform = require('./color-scale-xform');

var IconSetXform = require('./icon-set-xform');

var extIcons = {
  '3Triangles': true,
  '3Stars': true,
  '5Boxes': true
};

var getTextFormula = function getTextFormula(model) {
  if (model.formulae && model.formulae[0]) {
    return model.formulae[0];
  }

  var range = new Range(model.ref);
  var tl = range.tl;

  switch (model.operator) {
    case 'containsText':
      return "NOT(ISERROR(SEARCH(\"".concat(model.text, "\",").concat(tl, ")))");

    case 'containsBlanks':
      return "LEN(TRIM(".concat(tl, "))=0");

    case 'notContainsBlanks':
      return "LEN(TRIM(".concat(tl, "))>0");

    case 'containsErrors':
      return "ISERROR(".concat(tl, ")");

    case 'notContainsErrors':
      return "NOT(ISERROR(".concat(tl, "))");

    default:
      return undefined;
  }
};

var getTimePeriodFormula = function getTimePeriodFormula(model) {
  if (model.formulae && model.formulae[0]) {
    return model.formulae[0];
  }

  var range = new Range(model.ref);
  var tl = range.tl;

  switch (model.timePeriod) {
    case 'thisWeek':
      return "AND(TODAY()-ROUNDDOWN(".concat(tl, ",0)<=WEEKDAY(TODAY())-1,ROUNDDOWN(").concat(tl, ",0)-TODAY()<=7-WEEKDAY(TODAY()))");

    case 'lastWeek':
      return "AND(TODAY()-ROUNDDOWN(".concat(tl, ",0)>=(WEEKDAY(TODAY())),TODAY()-ROUNDDOWN(").concat(tl, ",0)<(WEEKDAY(TODAY())+7))");

    case 'nextWeek':
      return "AND(ROUNDDOWN(".concat(tl, ",0)-TODAY()>(7-WEEKDAY(TODAY())),ROUNDDOWN(").concat(tl, ",0)-TODAY()<(15-WEEKDAY(TODAY())))");

    case 'yesterday':
      return "FLOOR(".concat(tl, ",1)=TODAY()-1");

    case 'today':
      return "FLOOR(".concat(tl, ",1)=TODAY()");

    case 'tomorrow':
      return "FLOOR(".concat(tl, ",1)=TODAY()+1");

    case 'last7Days':
      return "AND(TODAY()-FLOOR(".concat(tl, ",1)<=6,FLOOR(").concat(tl, ",1)<=TODAY())");

    case 'lastMonth':
      return "AND(MONTH(".concat(tl, ")=MONTH(EDATE(TODAY(),0-1)),YEAR(").concat(tl, ")=YEAR(EDATE(TODAY(),0-1)))");

    case 'thisMonth':
      return "AND(MONTH(".concat(tl, ")=MONTH(TODAY()),YEAR(").concat(tl, ")=YEAR(TODAY()))");

    case 'nextMonth':
      return "AND(MONTH(".concat(tl, ")=MONTH(EDATE(TODAY(),0+1)),YEAR(").concat(tl, ")=YEAR(EDATE(TODAY(),0+1)))");

    default:
      return undefined;
  }
};

var opType = function opType(attr) {
  var type = attr.type,
      operator = attr.operator;

  switch (type) {
    case 'containsText':
    case 'containsBlanks':
    case 'notContainsBlanks':
    case 'containsErrors':
    case 'notContainsErrors':
      return {
        type: 'containsText',
        operator: type
      };

    default:
      return {
        type: type,
        operator: operator
      };
  }
};

var CfRuleXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(CfRuleXform, _BaseXform);

  function CfRuleXform() {
    var _this;

    _classCallCheck(this, CfRuleXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(CfRuleXform).call(this));
    _this.map = {
      dataBar: _this.databarXform = new DatabarXform(),
      extLst: _this.extLstXform = new ExtLstRefXform(),
      formula: _this.formulaXform = new FormulaXform(),
      colorScale: _this.colorScaleXform = new ColorScaleXform(),
      iconSet: _this.iconSetXform = new IconSetXform()
    };
    return _this;
  }

  _createClass(CfRuleXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      switch (model.type) {
        case 'expression':
          this.renderExpression(xmlStream, model);
          break;

        case 'cellIs':
          this.renderCellIs(xmlStream, model);
          break;

        case 'top10':
          this.renderTop10(xmlStream, model);
          break;

        case 'aboveAverage':
          this.renderAboveAverage(xmlStream, model);
          break;

        case 'dataBar':
          this.renderDataBar(xmlStream, model);
          break;

        case 'colorScale':
          this.renderColorScale(xmlStream, model);
          break;

        case 'iconSet':
          this.renderIconSet(xmlStream, model);
          break;

        case 'containsText':
          this.renderText(xmlStream, model);
          break;

        case 'timePeriod':
          this.renderTimePeriod(xmlStream, model);
          break;
      }
    }
  }, {
    key: "renderExpression",
    value: function renderExpression(xmlStream, model) {
      xmlStream.openNode(this.tag, {
        type: 'expression',
        dxfId: model.dxfId,
        priority: model.priority
      });
      this.formulaXform.render(xmlStream, model.formulae[0]);
      xmlStream.closeNode();
    }
  }, {
    key: "renderCellIs",
    value: function renderCellIs(xmlStream, model) {
      var _this2 = this;

      xmlStream.openNode(this.tag, {
        type: 'cellIs',
        dxfId: model.dxfId,
        priority: model.priority,
        operator: model.operator
      });
      model.formulae.forEach(function (formula) {
        _this2.formulaXform.render(xmlStream, formula);
      });
      xmlStream.closeNode();
    }
  }, {
    key: "renderTop10",
    value: function renderTop10(xmlStream, model) {
      xmlStream.leafNode(this.tag, {
        type: 'top10',
        dxfId: model.dxfId,
        priority: model.priority,
        percent: model.percent ? '1' : undefined,
        bottom: model.bottom ? '1' : undefined,
        rank: model.rank || 10
      });
    }
  }, {
    key: "renderAboveAverage",
    value: function renderAboveAverage(xmlStream, model) {
      xmlStream.leafNode(this.tag, {
        type: 'aboveAverage',
        dxfId: model.dxfId,
        priority: model.priority,
        aboveAverage: model.aboveAverage === false ? '0' : undefined
      });
    }
  }, {
    key: "renderDataBar",
    value: function renderDataBar(xmlStream, model) {
      xmlStream.openNode(this.tag, {
        type: 'dataBar',
        priority: model.priority
      });
      this.databarXform.render(xmlStream, model);
      model.x14Id = "{".concat(uuid.v4(), "}");
      this.extLstXform.render(xmlStream, model);
      xmlStream.closeNode();
    }
  }, {
    key: "renderColorScale",
    value: function renderColorScale(xmlStream, model) {
      xmlStream.openNode(this.tag, {
        type: 'colorScale',
        priority: model.priority
      });
      this.colorScaleXform.render(xmlStream, model);
      xmlStream.closeNode();
    }
  }, {
    key: "renderIconSet",
    value: function renderIconSet(xmlStream, model) {
      // iconset is all primitive or all extLst
      if (!CfRuleXform.isPrimitive(model)) {
        return;
      }

      xmlStream.openNode(this.tag, {
        type: 'iconSet',
        priority: model.priority
      });
      this.iconSetXform.render(xmlStream, model);
      xmlStream.closeNode();
    }
  }, {
    key: "renderText",
    value: function renderText(xmlStream, model) {
      xmlStream.openNode(this.tag, {
        type: model.operator,
        dxfId: model.dxfId,
        priority: model.priority,
        operator: model.operator === 'containsText' ? model.operator : undefined
      });
      var formula = getTextFormula(model);

      if (formula) {
        this.formulaXform.render(xmlStream, formula);
      }

      xmlStream.closeNode();
    }
  }, {
    key: "renderTimePeriod",
    value: function renderTimePeriod(xmlStream, model) {
      xmlStream.openNode(this.tag, {
        type: 'timePeriod',
        dxfId: model.dxfId,
        priority: model.priority,
        timePeriod: model.timePeriod
      });
      var formula = getTimePeriodFormula(model);

      if (formula) {
        this.formulaXform.render(xmlStream, formula);
      }

      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case this.tag:
          this.model = _objectSpread({}, opType(node.attributes), {
            dxfId: BaseXform.toIntValue(node.attributes.dxfId),
            priority: BaseXform.toIntValue(node.attributes.priority),
            timePeriod: node.attributes.timePeriod,
            percent: BaseXform.toBoolValue(node.attributes.percent),
            bottom: BaseXform.toBoolValue(node.attributes.bottom),
            rank: BaseXform.toIntValue(node.attributes.rank),
            aboveAverage: BaseXform.toBoolValue(node.attributes.aboveAverage)
          });
          return true;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
            return true;
          }

      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          switch (name) {
            case 'dataBar':
            case 'extLst':
            case 'colorScale':
            case 'iconSet':
              // merge parser model with ours
              Object.assign(this.model, this.parser.model);
              break;

            case 'formula':
              // except - formula is a string and appends to formulae
              this.model.formulae = this.model.formulae || [];
              this.model.formulae.push(this.parser.model);
              break;
          }

          this.parser = null;
        }

        return true;
      }

      return name !== this.tag;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'cfRule';
    }
  }], [{
    key: "isPrimitive",
    value: function isPrimitive(rule) {
      // is this rule primitive?
      if (rule.type === 'iconSet') {
        if (rule.custom || extIcons[rule.iconSet]) {
          return false;
        }
      }

      return true;
    }
  }]);

  return CfRuleXform;
}(BaseXform);

module.exports = CfRuleXform;


},{"../../../../doc/range":10,"../../base-xform":28,"./color-scale-xform":63,"./databar-xform":66,"./ext-lst-ref-xform":67,"./formula-xform":68,"./icon-set-xform":69,"uuid":357}],62:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../../base-xform');

var CfvoXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(CfvoXform, _BaseXform);

  function CfvoXform() {
    _classCallCheck(this, CfvoXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(CfvoXform).apply(this, arguments));
  }

  _createClass(CfvoXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.leafNode(this.tag, {
        type: model.type,
        val: model.value
      });
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      this.model = {
        type: node.attributes.type,
        value: BaseXform.toFloatValue(node.attributes.val)
      };
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      return name !== this.tag;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'cfvo';
    }
  }]);

  return CfvoXform;
}(BaseXform);

module.exports = CfvoXform;


},{"../../base-xform":28}],63:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../../base-xform');

var ColorXform = require('../../style/color-xform');

var CfvoXform = require('./cfvo-xform');

var ColorScaleXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(ColorScaleXform, _BaseXform);

  function ColorScaleXform() {
    var _this;

    _classCallCheck(this, ColorScaleXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(ColorScaleXform).call(this));
    _this.map = {
      cfvo: _this.cfvoXform = new CfvoXform(),
      color: _this.colorXform = new ColorXform()
    };
    return _this;
  }

  _createClass(ColorScaleXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      var _this2 = this;

      xmlStream.openNode(this.tag);
      model.cfvo.forEach(function (cfvo) {
        _this2.cfvoXform.render(xmlStream, cfvo);
      });
      model.color.forEach(function (color) {
        _this2.colorXform.render(xmlStream, color);
      });
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case this.tag:
          this.model = {
            cfvo: [],
            color: []
          };
          break;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
            return true;
          }

      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.model[name].push(this.parser.model);
          this.parser = null;
        }

        return true;
      }

      return name !== this.tag;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'colorScale';
    }
  }]);

  return ColorScaleXform;
}(BaseXform);

module.exports = ColorScaleXform;


},{"../../base-xform":28,"../../style/color-xform":105,"./cfvo-xform":62}],64:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../../base-xform');

var CfRuleXform = require('./cf-rule-xform');

var ConditionalFormattingXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(ConditionalFormattingXform, _BaseXform);

  function ConditionalFormattingXform() {
    var _this;

    _classCallCheck(this, ConditionalFormattingXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(ConditionalFormattingXform).call(this));
    _this.map = {
      cfRule: new CfRuleXform()
    };
    return _this;
  }

  _createClass(ConditionalFormattingXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      var _this2 = this;

      // if there are no primitive rules, exit now
      if (!model.rules.some(CfRuleXform.isPrimitive)) {
        return;
      }

      xmlStream.openNode(this.tag, {
        sqref: model.ref
      });
      model.rules.forEach(function (rule) {
        if (CfRuleXform.isPrimitive(rule)) {
          rule.ref = model.ref;

          _this2.map.cfRule.render(xmlStream, rule);
        }
      });
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      this.parser = this.parser || this.map[node.name];

      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      if (node.name === this.tag) {
        this.model = {
          ref: node.attributes.sqref,
          rules: []
        };
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.model.rules.push(this.parser.model);
          this.parser = null;
        }

        return true;
      }

      return name !== this.tag;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'conditionalFormatting';
    }
  }]);

  return ConditionalFormattingXform;
}(BaseXform);

module.exports = ConditionalFormattingXform;


},{"../../base-xform":28,"./cf-rule-xform":61}],65:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread(); }

function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance"); }

function _iterableToArray(iter) { if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter); }

function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../../base-xform');

var ConditionalFormattingXform = require('./conditional-formatting-xform');

var ConditionalFormattingsXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(ConditionalFormattingsXform, _BaseXform);

  function ConditionalFormattingsXform() {
    var _this;

    _classCallCheck(this, ConditionalFormattingsXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(ConditionalFormattingsXform).call(this));
    _this.cfXform = new ConditionalFormattingXform(); // thanks to Excel, conditionalFormatting nodes are directly inside
    // <worksheet>, not inside some <conditionalFormattings> node so
    // we create initial model here

    _this.reset();

    return _this;
  }

  _createClass(ConditionalFormattingsXform, [{
    key: "reset",
    value: function reset() {
      this.model = [];
    }
  }, {
    key: "prepare",
    value: function prepare(model, options) {
      // ensure each rule has a priority value
      var nextPriority = model.reduce(function (p, cf) {
        return Math.max.apply(Math, [p].concat(_toConsumableArray(cf.rules.map(function (rule) {
          return rule.priority || 0;
        }))));
      }, 1);
      model.forEach(function (cf) {
        cf.rules.forEach(function (rule) {
          if (!rule.priority) {
            rule.priority = nextPriority++;
          }

          if (rule.style) {
            rule.dxfId = options.styles.addDxfStyle(rule.style);
          }
        });
      });
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      var _this2 = this;

      model.forEach(function (cf) {
        _this2.cfXform.render(xmlStream, cf);
      });
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case 'conditionalFormatting':
          this.parser = this.cfXform;
          this.parser.parseOpen(node);
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.model.push(this.parser.model);
          this.parser = undefined;
          return false;
        }

        return true;
      }

      return false;
    }
  }, {
    key: "reconcile",
    value: function reconcile(model, options) {
      model.forEach(function (cf) {
        cf.rules.forEach(function (rule) {
          if (rule.dxfId !== undefined) {
            rule.style = options.styles.getDxfStyle(rule.dxfId);
            delete rule.dxfId;
          }
        });
      });
    }
  }, {
    key: "tag",
    get: function get() {
      return 'conditionalFormatting';
    }
  }]);

  return ConditionalFormattingsXform;
}(BaseXform);

module.exports = ConditionalFormattingsXform;


},{"../../base-xform":28,"./conditional-formatting-xform":64}],66:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../../base-xform');

var ColorXform = require('../../style/color-xform');

var CfvoXform = require('./cfvo-xform');

var DatabarXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(DatabarXform, _BaseXform);

  function DatabarXform() {
    var _this;

    _classCallCheck(this, DatabarXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(DatabarXform).call(this));
    _this.map = {
      cfvo: _this.cfvoXform = new CfvoXform(),
      color: _this.colorXform = new ColorXform()
    };
    return _this;
  }

  _createClass(DatabarXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      var _this2 = this;

      xmlStream.openNode(this.tag);
      model.cfvo.forEach(function (cfvo) {
        _this2.cfvoXform.render(xmlStream, cfvo);
      });
      model.color.forEach(function (color) {
        _this2.colorXform.render(xmlStream, color);
      });
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case this.tag:
          this.model = {
            cfvo: [],
            color: []
          };
          break;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
            return true;
          }

      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.model[name].push(this.parser.model);
          this.parser = null;
        }

        return true;
      }

      return name !== this.tag;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'dataBar';
    }
  }]);

  return DatabarXform;
}(BaseXform);

module.exports = DatabarXform;


},{"../../base-xform":28,"../../style/color-xform":105,"./cfvo-xform":62}],67:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

/* eslint-disable max-classes-per-file */
var BaseXform = require('../../base-xform');

var X14IdXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(X14IdXform, _BaseXform);

  function X14IdXform() {
    _classCallCheck(this, X14IdXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(X14IdXform).apply(this, arguments));
  }

  _createClass(X14IdXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.leafNode(this.tag, null, model);
    }
  }, {
    key: "parseOpen",
    value: function parseOpen() {
      this.model = '';
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      this.model += text;
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      return name !== this.tag;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'x14:id';
    }
  }]);

  return X14IdXform;
}(BaseXform);

var ExtXform =
/*#__PURE__*/
function (_BaseXform2) {
  _inherits(ExtXform, _BaseXform2);

  function ExtXform() {
    var _this;

    _classCallCheck(this, ExtXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(ExtXform).call(this));
    _this.map = {
      'x14:id': new X14IdXform()
    };
    return _this;
  }

  _createClass(ExtXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode(this.tag, {
        uri: '{B025F937-C7B1-47D3-B67F-A62EFF666E3E}',
        'xmlns:x14': 'http://schemas.microsoft.com/office/spreadsheetml/2009/9/main'
      });
      this.map['x14:id'].render(model.x14Id);
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case this.tag:
          this.model = {};
          return true;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
          }

          return true;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.parser = undefined;
        }

        return true;
      }

      return name !== this.tag;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'ext';
    }
  }]);

  return ExtXform;
}(BaseXform);

var ExtLstRefXform =
/*#__PURE__*/
function (_BaseXform3) {
  _inherits(ExtLstRefXform, _BaseXform3);

  function ExtLstRefXform() {
    var _this2;

    _classCallCheck(this, ExtLstRefXform);

    _this2 = _possibleConstructorReturn(this, _getPrototypeOf(ExtLstRefXform).call(this));
    _this2.map = {
      ext: new ExtXform()
    };
    return _this2;
  }

  _createClass(ExtLstRefXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode(this.tag);
      this.map.ext.render(xmlStream, model);
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      this.model = {
        type: node.attributes.type,
        value: node.attributes.val
      };
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      return name !== this.tag;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'extLst';
    }
  }]);

  return ExtLstRefXform;
}(BaseXform);

module.exports = ExtLstRefXform;


},{"../../base-xform":28}],68:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../../base-xform');

var FormulaXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(FormulaXform, _BaseXform);

  function FormulaXform() {
    _classCallCheck(this, FormulaXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(FormulaXform).apply(this, arguments));
  }

  _createClass(FormulaXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.leafNode(this.tag, null, model);
    }
  }, {
    key: "parseOpen",
    value: function parseOpen() {
      this.model = '';
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      this.model += text;
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      return name !== this.tag;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'formula';
    }
  }]);

  return FormulaXform;
}(BaseXform);

module.exports = FormulaXform;


},{"../../base-xform":28}],69:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../../base-xform');

var CfvoXform = require('./cfvo-xform');

var IconSetXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(IconSetXform, _BaseXform);

  function IconSetXform() {
    var _this;

    _classCallCheck(this, IconSetXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(IconSetXform).call(this));
    _this.map = {
      cfvo: _this.cfvoXform = new CfvoXform()
    };
    return _this;
  }

  _createClass(IconSetXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      var _this2 = this;

      xmlStream.openNode(this.tag, {
        iconSet: BaseXform.toStringAttribute(model.iconSet, '3TrafficLights'),
        reverse: BaseXform.toBoolAttribute(model.reverse, false),
        showValue: BaseXform.toBoolAttribute(model.showValue, true)
      });
      model.cfvo.forEach(function (cfvo) {
        _this2.cfvoXform.render(xmlStream, cfvo);
      });
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case this.tag:
          this.model = {
            iconSet: BaseXform.toStringValue(node.attributes.iconSet, '3TrafficLights'),
            reverse: BaseXform.toBoolValue(node.attributes.reverse),
            showValue: BaseXform.toBoolValue(node.attributes.showValue),
            cfvo: []
          };
          break;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
            return true;
          }

      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.model[name].push(this.parser.model);
          this.parser = null;
        }

        return true;
      }

      return name !== this.tag;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'iconSet';
    }
  }]);

  return IconSetXform;
}(BaseXform);

module.exports = IconSetXform;


},{"../../base-xform":28,"./cfvo-xform":62}],70:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var ColXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(ColXform, _BaseXform);

  function ColXform() {
    _classCallCheck(this, ColXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(ColXform).apply(this, arguments));
  }

  _createClass(ColXform, [{
    key: "prepare",
    value: function prepare(model, options) {
      var styleId = options.styles.addStyleModel(model.style || {});

      if (styleId) {
        model.styleId = styleId;
      }
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode('col');
      xmlStream.addAttribute('min', model.min);
      xmlStream.addAttribute('max', model.max);

      if (model.width) {
        xmlStream.addAttribute('width', model.width);
      }

      if (model.styleId) {
        xmlStream.addAttribute('style', model.styleId);
      }

      if (model.hidden) {
        xmlStream.addAttribute('hidden', '1');
      }

      if (model.bestFit) {
        xmlStream.addAttribute('bestFit', '1');
      }

      if (model.outlineLevel) {
        xmlStream.addAttribute('outlineLevel', model.outlineLevel);
      }

      if (model.collapsed) {
        xmlStream.addAttribute('collapsed', '1');
      }

      xmlStream.addAttribute('customWidth', '1');
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === 'col') {
        var model = this.model = {
          min: parseInt(node.attributes.min || '0', 10),
          max: parseInt(node.attributes.max || '0', 10),
          width: node.attributes.width === undefined ? undefined : parseFloat(node.attributes.width || '0')
        };

        if (node.attributes.style) {
          model.styleId = parseInt(node.attributes.style, 10);
        }

        if (node.attributes.hidden) {
          model.hidden = true;
        }

        if (node.attributes.bestFit) {
          model.bestFit = true;
        }

        if (node.attributes.outlineLevel) {
          model.outlineLevel = parseInt(node.attributes.outlineLevel, 10);
        }

        if (node.attributes.collapsed) {
          model.collapsed = true;
        }

        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "reconcile",
    value: function reconcile(model, options) {
      // reconcile column styles
      if (model.styleId) {
        model.style = options.styles.getStyleModel(model.styleId);
      }
    }
  }, {
    key: "tag",
    get: function get() {
      return 'col';
    }
  }]);

  return ColXform;
}(BaseXform);

module.exports = ColXform;


},{"../base-xform":28}],71:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

var _ = require('../../../utils/under-dash');

var utils = require('../../../utils/utils');

var colCache = require('../../../utils/col-cache');

var BaseXform = require('../base-xform');

var Range = require('../../../doc/range');

function assign(definedName, attributes, name, defaultValue) {
  var value = attributes[name];

  if (value !== undefined) {
    definedName[name] = value;
  } else if (defaultValue !== undefined) {
    definedName[name] = defaultValue;
  }
}

function parseBool(value) {
  switch (value) {
    case '1':
    case 'true':
      return true;

    default:
      return false;
  }
}

function assignBool(definedName, attributes, name, defaultValue) {
  var value = attributes[name];

  if (value !== undefined) {
    definedName[name] = parseBool(value);
  } else if (defaultValue !== undefined) {
    definedName[name] = defaultValue;
  }
}

function optimiseDataValidations(model) {
  // Squeeze alike data validations together into rectangular ranges
  // to reduce file size and speed up Excel load time
  var dvList = _.map(model, function (dataValidation, address) {
    return {
      address: address,
      dataValidation: dataValidation,
      marked: false
    };
  }).sort(function (a, b) {
    return _.strcmp(a.address, b.address);
  });

  var dvMap = _.keyBy(dvList, 'address');

  var matchCol = function matchCol(addr, height, col) {
    for (var i = 0; i < height; i++) {
      var otherAddress = colCache.encodeAddress(addr.row + i, col);

      if (!model[otherAddress] || !_.isEqual(model[addr.address], model[otherAddress])) {
        return false;
      }
    }

    return true;
  };

  return dvList.map(function (dv) {
    if (!dv.marked) {
      var addr = colCache.decodeAddress(dv.address); // iterate downwards - finding matching cells

      var height = 1;
      var otherAddress = colCache.encodeAddress(addr.row + height, addr.col);

      while (model[otherAddress] && _.isEqual(dv.dataValidation, model[otherAddress])) {
        height++;
        otherAddress = colCache.encodeAddress(addr.row + height, addr.col);
      } // iterate rightwards...


      var width = 1;

      while (matchCol(addr, height, addr.col + width)) {
        width++;
      } // mark all included addresses


      for (var i = 0; i < height; i++) {
        for (var j = 0; j < width; j++) {
          otherAddress = colCache.encodeAddress(addr.row + i, addr.col + j);
          dvMap[otherAddress].marked = true;
        }
      }

      if (height > 1 || width > 1) {
        var bottom = addr.row + (height - 1);
        var right = addr.col + (width - 1);
        return _objectSpread({}, dv.dataValidation, {
          sqref: "".concat(dv.address, ":").concat(colCache.encodeAddress(bottom, right))
        });
      }

      return _objectSpread({}, dv.dataValidation, {
        sqref: dv.address
      });
    }

    return null;
  }).filter(Boolean);
}

var DataValidationsXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(DataValidationsXform, _BaseXform);

  function DataValidationsXform() {
    _classCallCheck(this, DataValidationsXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(DataValidationsXform).apply(this, arguments));
  }

  _createClass(DataValidationsXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      var optimizedModel = optimiseDataValidations(model);

      if (optimizedModel.length) {
        xmlStream.openNode('dataValidations', {
          count: optimizedModel.length
        });
        optimizedModel.forEach(function (value) {
          xmlStream.openNode('dataValidation');

          if (value.type !== 'any') {
            xmlStream.addAttribute('type', value.type);

            if (value.operator && value.type !== 'list' && value.operator !== 'between') {
              xmlStream.addAttribute('operator', value.operator);
            }

            if (value.allowBlank) {
              xmlStream.addAttribute('allowBlank', '1');
            }
          }

          if (value.showInputMessage) {
            xmlStream.addAttribute('showInputMessage', '1');
          }

          if (value.promptTitle) {
            xmlStream.addAttribute('promptTitle', value.promptTitle);
          }

          if (value.prompt) {
            xmlStream.addAttribute('prompt', value.prompt);
          }

          if (value.showErrorMessage) {
            xmlStream.addAttribute('showErrorMessage', '1');
          }

          if (value.errorStyle) {
            xmlStream.addAttribute('errorStyle', value.errorStyle);
          }

          if (value.errorTitle) {
            xmlStream.addAttribute('errorTitle', value.errorTitle);
          }

          if (value.error) {
            xmlStream.addAttribute('error', value.error);
          }

          xmlStream.addAttribute('sqref', value.sqref);
          (value.formulae || []).forEach(function (formula, index) {
            xmlStream.openNode("formula".concat(index + 1));

            if (value.type === 'date') {
              xmlStream.writeText(utils.dateToExcel(new Date(formula)));
            } else {
              xmlStream.writeText(formula);
            }

            xmlStream.closeNode();
          });
          xmlStream.closeNode();
        });
        xmlStream.closeNode();
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      switch (node.name) {
        case 'dataValidations':
          this.model = {};
          return true;

        case 'dataValidation':
          {
            this._address = node.attributes.sqref;
            var dataValidation = node.attributes.type ? {
              type: node.attributes.type,
              formulae: []
            } : {
              type: 'any'
            };

            if (node.attributes.type) {
              assignBool(dataValidation, node.attributes, 'allowBlank');
            }

            assignBool(dataValidation, node.attributes, 'showInputMessage');
            assignBool(dataValidation, node.attributes, 'showErrorMessage');

            switch (dataValidation.type) {
              case 'any':
              case 'list':
              case 'custom':
                break;

              default:
                assign(dataValidation, node.attributes, 'operator', 'between');
                break;
            }

            assign(dataValidation, node.attributes, 'promptTitle');
            assign(dataValidation, node.attributes, 'prompt');
            assign(dataValidation, node.attributes, 'errorStyle');
            assign(dataValidation, node.attributes, 'errorTitle');
            assign(dataValidation, node.attributes, 'error');
            this._dataValidation = dataValidation;
            return true;
          }

        case 'formula1':
        case 'formula2':
          this._formula = [];
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this._formula) {
        this._formula.push(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      var _this = this;

      switch (name) {
        case 'dataValidations':
          return false;

        case 'dataValidation':
          if (!this._dataValidation.formulae || !this._dataValidation.formulae.length) {
            delete this._dataValidation.formulae;
            delete this._dataValidation.operator;
          }

          if (this._address.includes(':')) {
            var range = new Range(this._address);
            range.forEachAddress(function (address) {
              _this.model[address] = _this._dataValidation;
            });
          } else {
            this.model[this._address] = this._dataValidation;
          }

          return true;

        case 'formula1':
        case 'formula2':
          {
            var formula = this._formula.join('');

            switch (this._dataValidation.type) {
              case 'whole':
              case 'textLength':
                formula = parseInt(formula, 10);
                break;

              case 'decimal':
                formula = parseFloat(formula);
                break;

              case 'date':
                formula = utils.excelToDate(parseFloat(formula));
                break;

              default:
                break;
            }

            this._dataValidation.formulae.push(formula);

            this._formula = undefined;
            return true;
          }

        default:
          return true;
      }
    }
  }, {
    key: "tag",
    get: function get() {
      return 'dataValidations';
    }
  }]);

  return DataValidationsXform;
}(BaseXform);

module.exports = DataValidationsXform;


},{"../../../doc/range":10,"../../../utils/col-cache":17,"../../../utils/under-dash":22,"../../../utils/utils":23,"../base-xform":28}],72:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var DimensionXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(DimensionXform, _BaseXform);

  function DimensionXform() {
    _classCallCheck(this, DimensionXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(DimensionXform).apply(this, arguments));
  }

  _createClass(DimensionXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model) {
        xmlStream.leafNode('dimension', {
          ref: model
        });
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === 'dimension') {
        this.model = node.attributes.ref;
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'dimension';
    }
  }]);

  return DimensionXform;
}(BaseXform);

module.exports = DimensionXform;


},{"../base-xform":28}],73:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var DrawingXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(DrawingXform, _BaseXform);

  function DrawingXform() {
    _classCallCheck(this, DrawingXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(DrawingXform).apply(this, arguments));
  }

  _createClass(DrawingXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model) {
        xmlStream.leafNode(this.tag, {
          'r:id': model.rId
        });
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      switch (node.name) {
        case this.tag:
          this.model = {
            rId: node.attributes['r:id']
          };
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'drawing';
    }
  }]);

  return DrawingXform;
}(BaseXform);

module.exports = DrawingXform;


},{"../base-xform":28}],74:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var HeaderFooterXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(HeaderFooterXform, _BaseXform);

  function HeaderFooterXform() {
    _classCallCheck(this, HeaderFooterXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(HeaderFooterXform).apply(this, arguments));
  }

  _createClass(HeaderFooterXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model) {
        xmlStream.addRollback();
        var createTag = false;
        xmlStream.openNode('headerFooter');

        if (model.differentFirst) {
          xmlStream.addAttribute('differentFirst', '1');
          createTag = true;
        }

        if (model.differentOddEven) {
          xmlStream.addAttribute('differentOddEven', '1');
          createTag = true;
        }

        if (model.oddHeader && typeof model.oddHeader === 'string') {
          xmlStream.leafNode('oddHeader', null, model.oddHeader);
          createTag = true;
        }

        if (model.oddFooter && typeof model.oddFooter === 'string') {
          xmlStream.leafNode('oddFooter', null, model.oddFooter);
          createTag = true;
        }

        if (model.evenHeader && typeof model.evenHeader === 'string') {
          xmlStream.leafNode('evenHeader', null, model.evenHeader);
          createTag = true;
        }

        if (model.evenFooter && typeof model.evenFooter === 'string') {
          xmlStream.leafNode('evenFooter', null, model.evenFooter);
          createTag = true;
        }

        if (model.firstHeader && typeof model.firstHeader === 'string') {
          xmlStream.leafNode('firstHeader', null, model.firstHeader);
          createTag = true;
        }

        if (model.firstFooter && typeof model.firstFooter === 'string') {
          xmlStream.leafNode('firstFooter', null, model.firstFooter);
          createTag = true;
        }

        if (createTag) {
          xmlStream.closeNode();
          xmlStream.commit();
        } else {
          xmlStream.rollback();
        }
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      switch (node.name) {
        case 'headerFooter':
          this.model = {};

          if (node.attributes.differentFirst) {
            this.model.differentFirst = parseInt(node.attributes.differentFirst, 0) === 1;
          }

          if (node.attributes.differentOddEven) {
            this.model.differentOddEven = parseInt(node.attributes.differentOddEven, 0) === 1;
          }

          return true;

        case 'oddHeader':
          this.currentNode = 'oddHeader';
          return true;

        case 'oddFooter':
          this.currentNode = 'oddFooter';
          return true;

        case 'evenHeader':
          this.currentNode = 'evenHeader';
          return true;

        case 'evenFooter':
          this.currentNode = 'evenFooter';
          return true;

        case 'firstHeader':
          this.currentNode = 'firstHeader';
          return true;

        case 'firstFooter':
          this.currentNode = 'firstFooter';
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      switch (this.currentNode) {
        case 'oddHeader':
          this.model.oddHeader = text;
          break;

        case 'oddFooter':
          this.model.oddFooter = text;
          break;

        case 'evenHeader':
          this.model.evenHeader = text;
          break;

        case 'evenFooter':
          this.model.evenFooter = text;
          break;

        case 'firstHeader':
          this.model.firstHeader = text;
          break;

        case 'firstFooter':
          this.model.firstFooter = text;
          break;

        default:
          break;
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose() {
      switch (this.currentNode) {
        case 'oddHeader':
        case 'oddFooter':
        case 'evenHeader':
        case 'evenFooter':
        case 'firstHeader':
        case 'firstFooter':
          this.currentNode = undefined;
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "tag",
    get: function get() {
      return 'headerFooter';
    }
  }]);

  return HeaderFooterXform;
}(BaseXform);

module.exports = HeaderFooterXform;


},{"../base-xform":28}],75:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var HyperlinkXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(HyperlinkXform, _BaseXform);

  function HyperlinkXform() {
    _classCallCheck(this, HyperlinkXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(HyperlinkXform).apply(this, arguments));
  }

  _createClass(HyperlinkXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.leafNode('hyperlink', {
        ref: model.address,
        'r:id': model.rId,
        tooltip: model.tooltip
      });
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === 'hyperlink') {
        this.model = {
          address: node.attributes.ref,
          rId: node.attributes['r:id'],
          tooltip: node.attributes.tooltip
        };
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'hyperlink';
    }
  }]);

  return HyperlinkXform;
}(BaseXform);

module.exports = HyperlinkXform;


},{"../base-xform":28}],76:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var MergeCellXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(MergeCellXform, _BaseXform);

  function MergeCellXform() {
    _classCallCheck(this, MergeCellXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(MergeCellXform).apply(this, arguments));
  }

  _createClass(MergeCellXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.leafNode('mergeCell', {
        ref: model
      });
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === 'mergeCell') {
        this.model = node.attributes.ref;
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'mergeCell';
    }
  }]);

  return MergeCellXform;
}(BaseXform);

module.exports = MergeCellXform;


},{"../base-xform":28}],77:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var _ = require('../../../utils/under-dash');

var Range = require('../../../doc/range');

var colCache = require('../../../utils/col-cache');

var Enums = require('../../../doc/enums');

var Merges =
/*#__PURE__*/
function () {
  function Merges() {
    _classCallCheck(this, Merges);

    // optional mergeCells is array of ranges (like the xml)
    this.merges = {};
  }

  _createClass(Merges, [{
    key: "add",
    value: function add(merge) {
      // merge is {address, master}
      if (this.merges[merge.master]) {
        this.merges[merge.master].expandToAddress(merge.address);
      } else {
        var range = "".concat(merge.master, ":").concat(merge.address);
        this.merges[merge.master] = new Range(range);
      }
    }
  }, {
    key: "reconcile",
    value: function reconcile(mergeCells, rows) {
      // reconcile merge list with merge cells
      _.each(mergeCells, function (merge) {
        var dimensions = colCache.decode(merge);

        for (var i = dimensions.top; i <= dimensions.bottom; i++) {
          var row = rows[i - 1];

          for (var j = dimensions.left; j <= dimensions.right; j++) {
            var cell = row.cells[j - 1];

            if (!cell) {
              // nulls are not included in document - so if master cell has no value - add a null one here
              row.cells[j] = {
                type: Enums.ValueType.Null,
                address: colCache.encodeAddress(i, j)
              };
            } else if (cell.type === Enums.ValueType.Merge) {
              cell.master = dimensions.tl;
            }
          }
        }
      });
    }
  }, {
    key: "getMasterAddress",
    value: function getMasterAddress(address) {
      // if address has been merged, return its master's address. Assumes reconcile has been called
      var range = this.hash[address];
      return range && range.tl;
    }
  }, {
    key: "mergeCells",
    get: function get() {
      return _.map(this.merges, function (merge) {
        return merge.range;
      });
    }
  }]);

  return Merges;
}();

module.exports = Merges;


},{"../../../doc/enums":7,"../../../doc/range":10,"../../../utils/col-cache":17,"../../../utils/under-dash":22}],78:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var isDefined = function isDefined(attr) {
  return typeof attr !== 'undefined';
};

var OutlinePropertiesXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(OutlinePropertiesXform, _BaseXform);

  function OutlinePropertiesXform() {
    _classCallCheck(this, OutlinePropertiesXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(OutlinePropertiesXform).apply(this, arguments));
  }

  _createClass(OutlinePropertiesXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model && (isDefined(model.summaryBelow) || isDefined(model.summaryRight))) {
        xmlStream.leafNode(this.tag, {
          summaryBelow: isDefined(model.summaryBelow) ? Number(model.summaryBelow) : undefined,
          summaryRight: isDefined(model.summaryRight) ? Number(model.summaryRight) : undefined
        });
        return true;
      }

      return false;
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === this.tag) {
        this.model = {
          summaryBelow: isDefined(node.attributes.summaryBelow) ? Boolean(Number(node.attributes.summaryBelow)) : undefined,
          summaryRight: isDefined(node.attributes.summaryRight) ? Boolean(Number(node.attributes.summaryRight)) : undefined
        };
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'outlinePr';
    }
  }]);

  return OutlinePropertiesXform;
}(BaseXform);

module.exports = OutlinePropertiesXform;


},{"../base-xform":28}],79:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var PageBreaksXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(PageBreaksXform, _BaseXform);

  function PageBreaksXform() {
    _classCallCheck(this, PageBreaksXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(PageBreaksXform).apply(this, arguments));
  }

  _createClass(PageBreaksXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.leafNode('brk', model);
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === 'brk') {
        this.model = node.attributes.ref;
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'brk';
    }
  }]);

  return PageBreaksXform;
}(BaseXform);

module.exports = PageBreaksXform;


},{"../base-xform":28}],80:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var _ = require('../../../utils/under-dash');

var BaseXform = require('../base-xform');

var PageMarginsXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(PageMarginsXform, _BaseXform);

  function PageMarginsXform() {
    _classCallCheck(this, PageMarginsXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(PageMarginsXform).apply(this, arguments));
  }

  _createClass(PageMarginsXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model) {
        var attributes = {
          left: model.left,
          right: model.right,
          top: model.top,
          bottom: model.bottom,
          header: model.header,
          footer: model.footer
        };

        if (_.some(attributes, function (value) {
          return value !== undefined;
        })) {
          xmlStream.leafNode(this.tag, attributes);
        }
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      switch (node.name) {
        case this.tag:
          this.model = {
            left: parseFloat(node.attributes.left || 0.7),
            right: parseFloat(node.attributes.right || 0.7),
            top: parseFloat(node.attributes.top || 0.75),
            bottom: parseFloat(node.attributes.bottom || 0.75),
            header: parseFloat(node.attributes.header || 0.3),
            footer: parseFloat(node.attributes.footer || 0.3)
          };
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'pageMargins';
    }
  }]);

  return PageMarginsXform;
}(BaseXform);

module.exports = PageMarginsXform;


},{"../../../utils/under-dash":22,"../base-xform":28}],81:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var PageSetupPropertiesXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(PageSetupPropertiesXform, _BaseXform);

  function PageSetupPropertiesXform() {
    _classCallCheck(this, PageSetupPropertiesXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(PageSetupPropertiesXform).apply(this, arguments));
  }

  _createClass(PageSetupPropertiesXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model && model.fitToPage) {
        xmlStream.leafNode(this.tag, {
          fitToPage: model.fitToPage ? '1' : undefined
        });
        return true;
      }

      return false;
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === this.tag) {
        this.model = {
          fitToPage: node.attributes.fitToPage === '1'
        };
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'pageSetUpPr';
    }
  }]);

  return PageSetupPropertiesXform;
}(BaseXform);

module.exports = PageSetupPropertiesXform;


},{"../base-xform":28}],82:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var _ = require('../../../utils/under-dash');

var BaseXform = require('../base-xform');

function booleanToXml(model) {
  return model ? '1' : undefined;
}

function pageOrderToXml(model) {
  switch (model) {
    case 'overThenDown':
      return model;

    default:
      return undefined;
  }
}

function cellCommentsToXml(model) {
  switch (model) {
    case 'atEnd':
    case 'asDisplyed':
      return model;

    default:
      return undefined;
  }
}

function errorsToXml(model) {
  switch (model) {
    case 'dash':
    case 'blank':
    case 'NA':
      return model;

    default:
      return undefined;
  }
}

function pageSizeToModel(value) {
  return value !== undefined ? parseInt(value, 10) : undefined;
}

var PageSetupXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(PageSetupXform, _BaseXform);

  function PageSetupXform() {
    _classCallCheck(this, PageSetupXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(PageSetupXform).apply(this, arguments));
  }

  _createClass(PageSetupXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model) {
        var attributes = {
          paperSize: model.paperSize,
          orientation: model.orientation,
          horizontalDpi: model.horizontalDpi,
          verticalDpi: model.verticalDpi,
          pageOrder: pageOrderToXml(model.pageOrder),
          blackAndWhite: booleanToXml(model.blackAndWhite),
          draft: booleanToXml(model.draft),
          cellComments: cellCommentsToXml(model.cellComments),
          errors: errorsToXml(model.errors),
          scale: model.scale,
          fitToWidth: model.fitToWidth,
          fitToHeight: model.fitToHeight,
          firstPageNumber: model.firstPageNumber,
          useFirstPageNumber: booleanToXml(model.firstPageNumber),
          usePrinterDefaults: booleanToXml(model.usePrinterDefaults),
          copies: model.copies
        };

        if (_.some(attributes, function (value) {
          return value !== undefined;
        })) {
          xmlStream.leafNode(this.tag, attributes);
        }
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      switch (node.name) {
        case this.tag:
          this.model = {
            paperSize: pageSizeToModel(node.attributes.paperSize),
            orientation: node.attributes.orientation || 'portrait',
            horizontalDpi: parseInt(node.attributes.horizontalDpi || '4294967295', 10),
            verticalDpi: parseInt(node.attributes.verticalDpi || '4294967295', 10),
            pageOrder: node.attributes.pageOrder || 'downThenOver',
            blackAndWhite: node.attributes.blackAndWhite === '1',
            draft: node.attributes.draft === '1',
            cellComments: node.attributes.cellComments || 'None',
            errors: node.attributes.errors || 'displayed',
            scale: parseInt(node.attributes.scale || '100', 10),
            fitToWidth: parseInt(node.attributes.fitToWidth || '1', 10),
            fitToHeight: parseInt(node.attributes.fitToHeight || '1', 10),
            firstPageNumber: parseInt(node.attributes.firstPageNumber || '1', 10),
            useFirstPageNumber: node.attributes.useFirstPageNumber === '1',
            usePrinterDefaults: node.attributes.usePrinterDefaults === '1',
            copies: parseInt(node.attributes.copies || '1', 10)
          };
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'pageSetup';
    }
  }]);

  return PageSetupXform;
}(BaseXform);

module.exports = PageSetupXform;


},{"../../../utils/under-dash":22,"../base-xform":28}],83:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var PictureXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(PictureXform, _BaseXform);

  function PictureXform() {
    _classCallCheck(this, PictureXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(PictureXform).apply(this, arguments));
  }

  _createClass(PictureXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model) {
        xmlStream.leafNode(this.tag, {
          'r:id': model.rId
        });
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      switch (node.name) {
        case this.tag:
          this.model = {
            rId: node.attributes['r:id']
          };
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'picture';
    }
  }]);

  return PictureXform;
}(BaseXform);

module.exports = PictureXform;


},{"../base-xform":28}],84:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var _ = require('../../../utils/under-dash');

var BaseXform = require('../base-xform');

function booleanToXml(model) {
  return model ? '1' : undefined;
}

var PrintOptionsXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(PrintOptionsXform, _BaseXform);

  function PrintOptionsXform() {
    _classCallCheck(this, PrintOptionsXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(PrintOptionsXform).apply(this, arguments));
  }

  _createClass(PrintOptionsXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model) {
        var attributes = {
          headings: booleanToXml(model.showRowColHeaders),
          gridLines: booleanToXml(model.showGridLines),
          horizontalCentered: booleanToXml(model.horizontalCentered),
          verticalCentered: booleanToXml(model.verticalCentered)
        };

        if (_.some(attributes, function (value) {
          return value !== undefined;
        })) {
          xmlStream.leafNode(this.tag, attributes);
        }
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      switch (node.name) {
        case this.tag:
          this.model = {
            showRowColHeaders: node.attributes.headings === '1',
            showGridLines: node.attributes.gridLines === '1',
            horizontalCentered: node.attributes.horizontalCentered === '1',
            verticalCentered: node.attributes.verticalCentered === '1'
          };
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'printOptions';
    }
  }]);

  return PrintOptionsXform;
}(BaseXform);

module.exports = PrintOptionsXform;


},{"../../../utils/under-dash":22,"../base-xform":28}],85:[function(require,module,exports){
'use strict';

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var PageBreaksXform = require('./page-breaks-xform');

var ListXform = require('../list-xform');

var RowBreaksXform =
/*#__PURE__*/
function (_ListXform) {
  _inherits(RowBreaksXform, _ListXform);

  function RowBreaksXform() {
    _classCallCheck(this, RowBreaksXform);

    var options = {
      tag: 'rowBreaks',
      count: true,
      childXform: new PageBreaksXform()
    };
    return _possibleConstructorReturn(this, _getPrototypeOf(RowBreaksXform).call(this, options));
  } // get tag() { return 'rowBreaks'; }


  _createClass(RowBreaksXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model && model.length) {
        xmlStream.openNode(this.tag, this.$);

        if (this.count) {
          xmlStream.addAttribute(this.$count, model.length);
          xmlStream.addAttribute('manualBreakCount', model.length);
        }

        var childXform = this.childXform;
        model.forEach(function (childModel) {
          childXform.render(xmlStream, childModel);
        });
        xmlStream.closeNode();
      } else if (this.empty) {
        xmlStream.leafNode(this.tag);
      }
    }
  }]);

  return RowBreaksXform;
}(ListXform);

module.exports = RowBreaksXform;


},{"../list-xform":58,"./page-breaks-xform":79}],86:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var CellXform = require('./cell-xform');

var RowXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(RowXform, _BaseXform);

  function RowXform(options) {
    var _this;

    _classCallCheck(this, RowXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(RowXform).call(this));
    _this.maxItems = options && options.maxItems;
    _this.map = {
      c: new CellXform()
    };
    return _this;
  }

  _createClass(RowXform, [{
    key: "prepare",
    value: function prepare(model, options) {
      var styleId = options.styles.addStyleModel(model.style);

      if (styleId) {
        model.styleId = styleId;
      }

      var cellXform = this.map.c;
      model.cells.forEach(function (cellModel) {
        cellXform.prepare(cellModel, options);
      });
    }
  }, {
    key: "render",
    value: function render(xmlStream, model, options) {
      xmlStream.openNode('row');
      xmlStream.addAttribute('r', model.number);

      if (model.height) {
        xmlStream.addAttribute('ht', model.height);
        xmlStream.addAttribute('customHeight', '1');
      }

      if (model.hidden) {
        xmlStream.addAttribute('hidden', '1');
      }

      if (model.min > 0 && model.max > 0 && model.min <= model.max) {
        xmlStream.addAttribute('spans', "".concat(model.min, ":").concat(model.max));
      }

      if (model.styleId) {
        xmlStream.addAttribute('s', model.styleId);
        xmlStream.addAttribute('customFormat', '1');
      }

      xmlStream.addAttribute('x14ac:dyDescent', '0.25');

      if (model.outlineLevel) {
        xmlStream.addAttribute('outlineLevel', model.outlineLevel);
      }

      if (model.collapsed) {
        xmlStream.addAttribute('collapsed', '1');
      }

      var cellXform = this.map.c;
      model.cells.forEach(function (cellModel) {
        cellXform.render(xmlStream, cellModel, options);
      });
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      if (node.name === 'row') {
        this.numRowsSeen += 1;
        var spans = node.attributes.spans ? node.attributes.spans.split(':').map(function (span) {
          return parseInt(span, 10);
        }) : [undefined, undefined];
        var model = this.model = {
          number: parseInt(node.attributes.r, 10),
          min: spans[0],
          max: spans[1],
          cells: []
        };

        if (node.attributes.s) {
          model.styleId = parseInt(node.attributes.s, 10);
        }

        if (node.attributes.hidden) {
          model.hidden = true;
        }

        if (node.attributes.bestFit) {
          model.bestFit = true;
        }

        if (node.attributes.ht) {
          model.height = parseFloat(node.attributes.ht);
        }

        if (node.attributes.outlineLevel) {
          model.outlineLevel = parseInt(node.attributes.outlineLevel, 10);
        }

        if (node.attributes.collapsed) {
          model.collapsed = true;
        }

        return true;
      }

      this.parser = this.map[node.name];

      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.model.cells.push(this.parser.model);

          if (this.maxItems && this.model.cells.length > this.maxItems) {
            throw new Error('Max column count exceeded');
          }

          this.parser = undefined;
        }

        return true;
      }

      return false;
    }
  }, {
    key: "reconcile",
    value: function reconcile(model, options) {
      model.style = model.styleId ? options.styles.getStyleModel(model.styleId) : {};

      if (model.styleId !== undefined) {
        model.styleId = undefined;
      }

      var cellXform = this.map.c;
      model.cells.forEach(function (cellModel) {
        cellXform.reconcile(cellModel, options);
      });
    }
  }, {
    key: "tag",
    get: function get() {
      return 'row';
    }
  }]);

  return RowXform;
}(BaseXform);

module.exports = RowXform;


},{"../base-xform":28,"./cell-xform":60}],87:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var _ = require('../../../utils/under-dash');

var BaseXform = require('../base-xform');

var SheetFormatPropertiesXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(SheetFormatPropertiesXform, _BaseXform);

  function SheetFormatPropertiesXform() {
    _classCallCheck(this, SheetFormatPropertiesXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(SheetFormatPropertiesXform).apply(this, arguments));
  }

  _createClass(SheetFormatPropertiesXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model) {
        var attributes = {
          defaultRowHeight: model.defaultRowHeight,
          outlineLevelRow: model.outlineLevelRow,
          outlineLevelCol: model.outlineLevelCol,
          'x14ac:dyDescent': model.dyDescent
        }; // default value for 'defaultRowHeight' is 15, this should not be 'custom'

        if (!model.defaultRowHeight || model.defaultRowHeight !== 15) {
          attributes.customHeight = '1';
        }

        if (_.some(attributes, function (value) {
          return value !== undefined;
        })) {
          xmlStream.leafNode('sheetFormatPr', attributes);
        }
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === 'sheetFormatPr') {
        this.model = {
          defaultRowHeight: parseFloat(node.attributes.defaultRowHeight || '0'),
          dyDescent: parseFloat(node.attributes['x14ac:dyDescent'] || '0'),
          outlineLevelRow: parseInt(node.attributes.outlineLevelRow || '0', 10),
          outlineLevelCol: parseInt(node.attributes.outlineLevelCol || '0', 10)
        };
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'sheetFormatPr';
    }
  }]);

  return SheetFormatPropertiesXform;
}(BaseXform);

module.exports = SheetFormatPropertiesXform;


},{"../../../utils/under-dash":22,"../base-xform":28}],88:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var ColorXform = require('../style/color-xform');

var PageSetupPropertiesXform = require('./page-setup-properties-xform');

var OutlinePropertiesXform = require('./outline-properties-xform');

var SheetPropertiesXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(SheetPropertiesXform, _BaseXform);

  function SheetPropertiesXform() {
    var _this;

    _classCallCheck(this, SheetPropertiesXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(SheetPropertiesXform).call(this));
    _this.map = {
      tabColor: new ColorXform('tabColor'),
      pageSetUpPr: new PageSetupPropertiesXform(),
      outlinePr: new OutlinePropertiesXform()
    };
    return _this;
  }

  _createClass(SheetPropertiesXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model) {
        xmlStream.addRollback();
        xmlStream.openNode('sheetPr');
        var inner = false;
        inner = this.map.tabColor.render(xmlStream, model.tabColor) || inner;
        inner = this.map.pageSetUpPr.render(xmlStream, model.pageSetup) || inner;
        inner = this.map.outlinePr.render(xmlStream, model.outlineProperties) || inner;

        if (inner) {
          xmlStream.closeNode();
          xmlStream.commit();
        } else {
          xmlStream.rollback();
        }
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      if (node.name === this.tag) {
        this.reset();
        return true;
      }

      if (this.map[node.name]) {
        this.parser = this.map[node.name];
        this.parser.parseOpen(node);
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
        return true;
      }

      return false;
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.parser = undefined;
        }

        return true;
      }

      if (this.map.tabColor.model || this.map.pageSetUpPr.model || this.map.outlinePr.model) {
        this.model = {};

        if (this.map.tabColor.model) {
          this.model.tabColor = this.map.tabColor.model;
        }

        if (this.map.pageSetUpPr.model) {
          this.model.pageSetup = this.map.pageSetUpPr.model;
        }

        if (this.map.outlinePr.model) {
          this.model.outlineProperties = this.map.outlinePr.model;
        }
      } else {
        this.model = null;
      }

      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'sheetPr';
    }
  }]);

  return SheetPropertiesXform;
}(BaseXform);

module.exports = SheetPropertiesXform;


},{"../base-xform":28,"../style/color-xform":105,"./outline-properties-xform":78,"./page-setup-properties-xform":81}],89:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var _ = require('../../../utils/under-dash');

var BaseXform = require('../base-xform');

function booleanToXml(model, value) {
  return model ? value : undefined;
}

function xmlToBoolean(value, equals) {
  return value === equals ? true : undefined;
}

var SheetProtectionXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(SheetProtectionXform, _BaseXform);

  function SheetProtectionXform() {
    _classCallCheck(this, SheetProtectionXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(SheetProtectionXform).apply(this, arguments));
  }

  _createClass(SheetProtectionXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model) {
        var attributes = {
          sheet: booleanToXml(model.sheet, '1'),
          selectLockedCells: model.selectLockedCells === false ? '1' : undefined,
          selectUnlockedCells: model.selectUnlockedCells === false ? '1' : undefined,
          formatCells: booleanToXml(model.formatCells, '0'),
          formatColumns: booleanToXml(model.formatColumns, '0'),
          formatRows: booleanToXml(model.formatRows, '0'),
          insertColumns: booleanToXml(model.insertColumns, '0'),
          insertRows: booleanToXml(model.insertRows, '0'),
          insertHyperlinks: booleanToXml(model.insertHyperlinks, '0'),
          deleteColumns: booleanToXml(model.deleteColumns, '0'),
          deleteRows: booleanToXml(model.deleteRows, '0'),
          sort: booleanToXml(model.sort, '0'),
          autoFilter: booleanToXml(model.autoFilter, '0'),
          pivotTables: booleanToXml(model.pivotTables, '0')
        };

        if (model.sheet) {
          attributes.algorithmName = model.algorithmName;
          attributes.hashValue = model.hashValue;
          attributes.saltValue = model.saltValue;
          attributes.spinCount = model.spinCount;
          attributes.objects = booleanToXml(model.objects === false, '1');
          attributes.scenarios = booleanToXml(model.scenarios === false, '1');
        }

        if (_.some(attributes, function (value) {
          return value !== undefined;
        })) {
          xmlStream.leafNode(this.tag, attributes);
        }
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      switch (node.name) {
        case this.tag:
          this.model = {
            sheet: xmlToBoolean(node.attributes.sheet, '1'),
            objects: node.attributes.objects === '1' ? false : undefined,
            scenarios: node.attributes.scenarios === '1' ? false : undefined,
            selectLockedCells: node.attributes.selectLockedCells === '1' ? false : undefined,
            selectUnlockedCells: node.attributes.selectUnlockedCells === '1' ? false : undefined,
            formatCells: xmlToBoolean(node.attributes.formatCells, '0'),
            formatColumns: xmlToBoolean(node.attributes.formatColumns, '0'),
            formatRows: xmlToBoolean(node.attributes.formatRows, '0'),
            insertColumns: xmlToBoolean(node.attributes.insertColumns, '0'),
            insertRows: xmlToBoolean(node.attributes.insertRows, '0'),
            insertHyperlinks: xmlToBoolean(node.attributes.insertHyperlinks, '0'),
            deleteColumns: xmlToBoolean(node.attributes.deleteColumns, '0'),
            deleteRows: xmlToBoolean(node.attributes.deleteRows, '0'),
            sort: xmlToBoolean(node.attributes.sort, '0'),
            autoFilter: xmlToBoolean(node.attributes.autoFilter, '0'),
            pivotTables: xmlToBoolean(node.attributes.pivotTables, '0')
          };

          if (node.attributes.algorithmName) {
            this.model.algorithmName = node.attributes.algorithmName;
            this.model.hashValue = node.attributes.hashValue;
            this.model.saltValue = node.attributes.saltValue;
            this.model.spinCount = parseInt(node.attributes.spinCount, 10);
          }

          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'sheetProtection';
    }
  }]);

  return SheetProtectionXform;
}(BaseXform);

module.exports = SheetProtectionXform;


},{"../../../utils/under-dash":22,"../base-xform":28}],90:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var colCache = require('../../../utils/col-cache');

var BaseXform = require('../base-xform');

var VIEW_STATES = {
  frozen: 'frozen',
  frozenSplit: 'frozen',
  split: 'split'
};

var SheetViewXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(SheetViewXform, _BaseXform);

  function SheetViewXform() {
    _classCallCheck(this, SheetViewXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(SheetViewXform).apply(this, arguments));
  }

  _createClass(SheetViewXform, [{
    key: "prepare",
    value: function prepare(model) {
      switch (model.state) {
        case 'frozen':
        case 'split':
          break;

        default:
          model.state = 'normal';
          break;
      }
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode('sheetView', {
        workbookViewId: model.workbookViewId || 0
      });

      var add = function add(name, value, included) {
        if (included) {
          xmlStream.addAttribute(name, value);
        }
      };

      add('rightToLeft', '1', model.rightToLeft === true);
      add('tabSelected', '1', model.tabSelected);
      add('showRuler', '0', model.showRuler === false);
      add('showRowColHeaders', '0', model.showRowColHeaders === false);
      add('showGridLines', '0', model.showGridLines === false);
      add('zoomScale', model.zoomScale, model.zoomScale);
      add('zoomScaleNormal', model.zoomScaleNormal, model.zoomScaleNormal);
      add('view', model.style, model.style);
      var topLeftCell;
      var xSplit;
      var ySplit;
      var activePane;

      switch (model.state) {
        case 'frozen':
          xSplit = model.xSplit || 0;
          ySplit = model.ySplit || 0;
          topLeftCell = model.topLeftCell || colCache.getAddress(ySplit + 1, xSplit + 1).address;
          activePane = model.xSplit && model.ySplit && 'bottomRight' || model.xSplit && 'topRight' || 'bottomLeft';
          xmlStream.leafNode('pane', {
            xSplit: model.xSplit || undefined,
            ySplit: model.ySplit || undefined,
            topLeftCell: topLeftCell,
            activePane: activePane,
            state: 'frozen'
          });
          xmlStream.leafNode('selection', {
            pane: activePane,
            activeCell: model.activeCell,
            sqref: model.activeCell
          });
          break;

        case 'split':
          if (model.activePane === 'topLeft') {
            model.activePane = undefined;
          }

          xmlStream.leafNode('pane', {
            xSplit: model.xSplit || undefined,
            ySplit: model.ySplit || undefined,
            topLeftCell: model.topLeftCell,
            activePane: model.activePane
          });
          xmlStream.leafNode('selection', {
            pane: model.activePane,
            activeCell: model.activeCell,
            sqref: model.activeCell
          });
          break;

        case 'normal':
          if (model.activeCell) {
            xmlStream.leafNode('selection', {
              activeCell: model.activeCell,
              sqref: model.activeCell
            });
          }

          break;

        default:
          break;
      }

      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      switch (node.name) {
        case 'sheetView':
          this.sheetView = {
            workbookViewId: parseInt(node.attributes.workbookViewId, 10),
            rightToLeft: node.attributes.rightToLeft === '1',
            tabSelected: node.attributes.tabSelected === '1',
            showRuler: !(node.attributes.showRuler === '0'),
            showRowColHeaders: !(node.attributes.showRowColHeaders === '0'),
            showGridLines: !(node.attributes.showGridLines === '0'),
            zoomScale: parseInt(node.attributes.zoomScale || '100', 10),
            zoomScaleNormal: parseInt(node.attributes.zoomScaleNormal || '100', 10),
            style: node.attributes.view
          };
          this.pane = undefined;
          this.selections = {};
          return true;

        case 'pane':
          this.pane = {
            xSplit: parseInt(node.attributes.xSplit || '0', 10),
            ySplit: parseInt(node.attributes.ySplit || '0', 10),
            topLeftCell: node.attributes.topLeftCell,
            activePane: node.attributes.activePane || 'topLeft',
            state: node.attributes.state
          };
          return true;

        case 'selection':
          {
            var name = node.attributes.pane || 'topLeft';
            this.selections[name] = {
              pane: name,
              activeCell: node.attributes.activeCell
            };
            return true;
          }

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      var model;
      var selection;

      switch (name) {
        case 'sheetView':
          if (this.sheetView && this.pane) {
            model = this.model = {
              workbookViewId: this.sheetView.workbookViewId,
              rightToLeft: this.sheetView.rightToLeft,
              state: VIEW_STATES[this.pane.state] || 'split',
              // split is default
              xSplit: this.pane.xSplit,
              ySplit: this.pane.ySplit,
              topLeftCell: this.pane.topLeftCell,
              showRuler: this.sheetView.showRuler,
              showRowColHeaders: this.sheetView.showRowColHeaders,
              showGridLines: this.sheetView.showGridLines,
              zoomScale: this.sheetView.zoomScale,
              zoomScaleNormal: this.sheetView.zoomScaleNormal
            };

            if (this.model.state === 'split') {
              model.activePane = this.pane.activePane;
            }

            selection = this.selections[this.pane.activePane];

            if (selection && selection.activeCell) {
              model.activeCell = selection.activeCell;
            }

            if (this.sheetView.style) {
              model.style = this.sheetView.style;
            }
          } else {
            model = this.model = {
              workbookViewId: this.sheetView.workbookViewId,
              rightToLeft: this.sheetView.rightToLeft,
              state: 'normal',
              showRuler: this.sheetView.showRuler,
              showRowColHeaders: this.sheetView.showRowColHeaders,
              showGridLines: this.sheetView.showGridLines,
              zoomScale: this.sheetView.zoomScale,
              zoomScaleNormal: this.sheetView.zoomScaleNormal
            };
            selection = this.selections.topLeft;

            if (selection && selection.activeCell) {
              model.activeCell = selection.activeCell;
            }

            if (this.sheetView.style) {
              model.style = this.sheetView.style;
            }
          }

          return false;

        default:
          return true;
      }
    }
  }, {
    key: "reconcile",
    value: function reconcile() {}
  }, {
    key: "tag",
    get: function get() {
      return 'sheetView';
    }
  }]);

  return SheetViewXform;
}(BaseXform);

module.exports = SheetViewXform;


},{"../../../utils/col-cache":17,"../base-xform":28}],91:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var TablePartXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(TablePartXform, _BaseXform);

  function TablePartXform() {
    _classCallCheck(this, TablePartXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(TablePartXform).apply(this, arguments));
  }

  _createClass(TablePartXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model) {
        xmlStream.leafNode(this.tag, {
          'r:id': model.rId
        });
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      switch (node.name) {
        case this.tag:
          this.model = {
            rId: node.attributes['r:id']
          };
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'tablePart';
    }
  }]);

  return TablePartXform;
}(BaseXform);

module.exports = TablePartXform;


},{"../base-xform":28}],92:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var _ = require('../../../utils/under-dash');

var colCache = require('../../../utils/col-cache');

var XmlStream = require('../../../utils/xml-stream');

var RelType = require('../../rel-type');

var Merges = require('./merges');

var BaseXform = require('../base-xform');

var ListXform = require('../list-xform');

var RowXform = require('./row-xform');

var ColXform = require('./col-xform');

var DimensionXform = require('./dimension-xform');

var HyperlinkXform = require('./hyperlink-xform');

var MergeCellXform = require('./merge-cell-xform');

var DataValidationsXform = require('./data-validations-xform');

var SheetPropertiesXform = require('./sheet-properties-xform');

var SheetFormatPropertiesXform = require('./sheet-format-properties-xform');

var SheetViewXform = require('./sheet-view-xform');

var SheetProtectionXform = require('./sheet-protection-xform');

var PageMarginsXform = require('./page-margins-xform');

var PageSetupXform = require('./page-setup-xform');

var PrintOptionsXform = require('./print-options-xform');

var AutoFilterXform = require('./auto-filter-xform');

var PictureXform = require('./picture-xform');

var DrawingXform = require('./drawing-xform');

var TablePartXform = require('./table-part-xform');

var RowBreaksXform = require('./row-breaks-xform');

var HeaderFooterXform = require('./header-footer-xform');

var ConditionalFormattingsXform = require('./cf/conditional-formattings-xform');

var WorkSheetXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(WorkSheetXform, _BaseXform);

  function WorkSheetXform(options) {
    var _this;

    _classCallCheck(this, WorkSheetXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(WorkSheetXform).call(this));

    var _ref = options || {},
        maxRows = _ref.maxRows,
        maxCols = _ref.maxCols;

    _this.map = {
      sheetPr: new SheetPropertiesXform(),
      dimension: new DimensionXform(),
      sheetViews: new ListXform({
        tag: 'sheetViews',
        count: false,
        childXform: new SheetViewXform()
      }),
      sheetFormatPr: new SheetFormatPropertiesXform(),
      cols: new ListXform({
        tag: 'cols',
        count: false,
        childXform: new ColXform()
      }),
      sheetData: new ListXform({
        tag: 'sheetData',
        count: false,
        empty: true,
        childXform: new RowXform({
          maxItems: maxCols
        }),
        maxItems: maxRows
      }),
      autoFilter: new AutoFilterXform(),
      mergeCells: new ListXform({
        tag: 'mergeCells',
        count: true,
        childXform: new MergeCellXform()
      }),
      rowBreaks: new RowBreaksXform(),
      hyperlinks: new ListXform({
        tag: 'hyperlinks',
        count: false,
        childXform: new HyperlinkXform()
      }),
      pageMargins: new PageMarginsXform(),
      dataValidations: new DataValidationsXform(),
      pageSetup: new PageSetupXform(),
      headerFooter: new HeaderFooterXform(),
      printOptions: new PrintOptionsXform(),
      picture: new PictureXform(),
      drawing: new DrawingXform(),
      sheetProtection: new SheetProtectionXform(),
      tableParts: new ListXform({
        tag: 'tableParts',
        count: true,
        childXform: new TablePartXform()
      }),
      conditionalFormatting: new ConditionalFormattingsXform()
    };
    return _this;
  }

  _createClass(WorkSheetXform, [{
    key: "prepare",
    value: function prepare(model, options) {
      options.merges = new Merges();
      model.hyperlinks = options.hyperlinks = [];
      model.comments = options.comments = [];
      options.formulae = {};
      options.siFormulae = 0;
      this.map.cols.prepare(model.cols, options);
      this.map.sheetData.prepare(model.rows, options);
      this.map.conditionalFormatting.prepare(model.conditionalFormattings, options);
      model.mergeCells = options.merges.mergeCells; // prepare relationships

      var rels = model.rels = [];

      function nextRid(r) {
        return "rId".concat(r.length + 1);
      }

      model.hyperlinks.forEach(function (hyperlink) {
        var rId = nextRid(rels);
        hyperlink.rId = rId;
        rels.push({
          Id: rId,
          Type: RelType.Hyperlink,
          Target: hyperlink.target,
          TargetMode: 'External'
        });
      }); // prepare comment relationships

      if (model.comments.length > 0) {
        var comment = {
          Id: nextRid(rels),
          Type: RelType.Comments,
          Target: "../comments".concat(model.id, ".xml")
        };
        rels.push(comment);
        var vmlDrawing = {
          Id: nextRid(rels),
          Type: RelType.VmlDrawing,
          Target: "../drawings/vmlDrawing".concat(model.id, ".vml")
        };
        rels.push(vmlDrawing);
        model.comments.forEach(function (item) {
          item.refAddress = colCache.decodeAddress(item.ref);
        });
        options.commentRefs.push({
          commentName: "comments".concat(model.id),
          vmlDrawing: "vmlDrawing".concat(model.id)
        });
      }

      var drawingRelsHash = [];
      var bookImage;
      model.media.forEach(function (medium) {
        if (medium.type === 'background') {
          var rId = nextRid(rels);
          bookImage = options.media[medium.imageId];
          rels.push({
            Id: rId,
            Type: RelType.Image,
            Target: "../media/".concat(bookImage.name, ".").concat(bookImage.extension)
          });
          model.background = {
            rId: rId
          };
          model.image = options.media[medium.imageId];
        } else if (medium.type === 'image') {
          var drawing = model.drawing;
          bookImage = options.media[medium.imageId];

          if (!drawing) {
            drawing = model.drawing = {
              rId: nextRid(rels),
              name: "drawing".concat(++options.drawingsCount),
              anchors: [],
              rels: []
            };
            options.drawings.push(drawing);
            rels.push({
              Id: drawing.rId,
              Type: 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/drawing',
              Target: "../drawings/".concat(drawing.name, ".xml")
            });
          }

          var rIdImage = drawingRelsHash[medium.imageId];

          if (!rIdImage) {
            rIdImage = nextRid(drawing.rels);
            drawingRelsHash[medium.imageId] = rIdImage;
            drawing.rels.push({
              Id: rIdImage,
              Type: 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/image',
              Target: "../media/".concat(bookImage.name, ".").concat(bookImage.extension)
            });
          }

          drawing.anchors.push({
            picture: {
              rId: rIdImage
            },
            range: medium.range
          });
        }
      }); // prepare tables

      model.tables.forEach(function (table) {
        // relationships
        var rId = nextRid(rels);
        table.rId = rId;
        rels.push({
          Id: rId,
          Type: RelType.Table,
          Target: "../tables/".concat(table.target)
        }); // dynamic styles

        table.columns.forEach(function (column) {
          var style = column.style;

          if (style) {
            column.dxfId = options.styles.addDxfStyle(style);
          }
        });
      });
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openXml(XmlStream.StdDocAttributes);
      xmlStream.openNode('worksheet', WorkSheetXform.WORKSHEET_ATTRIBUTES);
      var sheetFormatPropertiesModel = model.properties ? {
        defaultRowHeight: model.properties.defaultRowHeight,
        dyDescent: model.properties.dyDescent,
        outlineLevelCol: model.properties.outlineLevelCol,
        outlineLevelRow: model.properties.outlineLevelRow
      } : undefined;
      var sheetPropertiesModel = {
        outlineProperties: model.properties && model.properties.outlineProperties,
        tabColor: model.properties && model.properties.tabColor,
        pageSetup: model.pageSetup && model.pageSetup.fitToPage ? {
          fitToPage: model.pageSetup.fitToPage
        } : undefined
      };
      var pageMarginsModel = model.pageSetup && model.pageSetup.margins;
      var printOptionsModel = {
        showRowColHeaders: model.showRowColHeaders,
        showGridLines: model.showGridLines,
        horizontalCentered: model.horizontalCentered,
        verticalCentered: model.verticalCentered
      };
      var sheetProtectionModel = model.sheetProtection;
      this.map.sheetPr.render(xmlStream, sheetPropertiesModel);
      this.map.dimension.render(xmlStream, model.dimensions);
      this.map.sheetViews.render(xmlStream, model.views);
      this.map.sheetFormatPr.render(xmlStream, sheetFormatPropertiesModel);
      this.map.cols.render(xmlStream, model.cols);
      this.map.sheetData.render(xmlStream, model.rows);
      this.map.sheetProtection.render(xmlStream, sheetProtectionModel); // Note: must be after sheetData and before autoFilter

      this.map.autoFilter.render(xmlStream, model.autoFilter);
      this.map.mergeCells.render(xmlStream, model.mergeCells);
      this.map.dataValidations.render(xmlStream, model.dataValidations); // For some reason hyperlinks have to be after the data validations

      this.map.hyperlinks.render(xmlStream, model.hyperlinks);
      this.map.conditionalFormatting.render(xmlStream, model.conditionalFormattings);
      this.map.pageMargins.render(xmlStream, pageMarginsModel);
      this.map.printOptions.render(xmlStream, printOptionsModel);
      this.map.pageSetup.render(xmlStream, model.pageSetup);
      this.map.headerFooter.render(xmlStream, model.headerFooter);
      this.map.rowBreaks.render(xmlStream, model.rowBreaks);
      this.map.drawing.render(xmlStream, model.drawing); // Note: must be after rowBreaks

      this.map.picture.render(xmlStream, model.background); // Note: must be after drawing

      this.map.tableParts.render(xmlStream, model.tables);

      if (model.rels) {
        // add a <legacyDrawing /> node for each comment
        model.rels.forEach(function (rel) {
          if (rel.Type === RelType.VmlDrawing) {
            xmlStream.leafNode('legacyDrawing', {
              'r:id': rel.Id
            });
          }
        });
      }

      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      if (node.name === 'worksheet') {
        _.each(this.map, function (xform) {
          xform.reset();
        });

        return true;
      }

      this.parser = this.map[node.name];

      if (this.parser) {
        this.parser.parseOpen(node);
      }

      return true;
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case 'worksheet':
          {
            var properties = this.map.sheetFormatPr.model;

            if (this.map.sheetPr.model && this.map.sheetPr.model.tabColor) {
              properties.tabColor = this.map.sheetPr.model.tabColor;
            }

            if (this.map.sheetPr.model && this.map.sheetPr.model.outlineProperties) {
              properties.outlineProperties = this.map.sheetPr.model.outlinePropertiesx;
            }

            var sheetProperties = {
              fitToPage: this.map.sheetPr.model && this.map.sheetPr.model.pageSetup && this.map.sheetPr.model.pageSetup.fitToPage || false,
              margins: this.map.pageMargins.model
            };
            var pageSetup = Object.assign(sheetProperties, this.map.pageSetup.model, this.map.printOptions.model);
            this.model = {
              dimensions: this.map.dimension.model,
              cols: this.map.cols.model,
              rows: this.map.sheetData.model,
              mergeCells: this.map.mergeCells.model,
              hyperlinks: this.map.hyperlinks.model,
              dataValidations: this.map.dataValidations.model,
              properties: properties,
              views: this.map.sheetViews.model,
              pageSetup: pageSetup,
              headerFooter: this.map.headerFooter.model,
              background: this.map.picture.model,
              drawing: this.map.drawing.model,
              tables: this.map.tableParts.model,
              conditionalFormattings: this.map.conditionalFormatting.model
            };

            if (this.map.autoFilter.model) {
              this.model.autoFilter = this.map.autoFilter.model;
            }

            if (this.map.sheetProtection.model) {
              this.model.sheetProtection = this.map.sheetProtection.model;
            }

            return false;
          }

        default:
          // not quite sure how we get here!
          return true;
      }
    }
  }, {
    key: "reconcile",
    value: function reconcile(model, options) {
      // options.merges = new Merges();
      // options.merges.reconcile(model.mergeCells, model.rows);
      var rels = (model.relationships || []).reduce(function (h, rel) {
        h[rel.Id] = rel;

        if (rel.Type === RelType.Comments) {
          model.comments = options.comments[rel.Target].comments;
        }

        return h;
      }, {});
      options.commentsMap = (model.comments || []).reduce(function (h, comment) {
        if (comment.ref) {
          h[comment.ref] = comment;
        }

        return h;
      }, {});
      options.hyperlinkMap = (model.hyperlinks || []).reduce(function (h, hyperlink) {
        if (hyperlink.rId) {
          h[hyperlink.address] = rels[hyperlink.rId].Target;
        }

        return h;
      }, {});
      options.formulae = {}; // compact the rows and cells

      model.rows = model.rows && model.rows.filter(Boolean) || [];
      model.rows.forEach(function (row) {
        row.cells = row.cells && row.cells.filter(Boolean) || [];
      });
      this.map.cols.reconcile(model.cols, options);
      this.map.sheetData.reconcile(model.rows, options);
      this.map.conditionalFormatting.reconcile(model.conditionalFormattings, options);
      model.media = [];

      if (model.drawing) {
        var drawingRel = rels[model.drawing.rId];
        var match = drawingRel.Target.match(/\/drawings\/([a-zA-Z0-9]+)[.][a-zA-Z]{3,4}$/);

        if (match) {
          var drawingName = match[1];
          var drawing = options.drawings[drawingName];
          drawing.anchors.forEach(function (anchor) {
            if (anchor.medium) {
              var image = {
                type: 'image',
                imageId: anchor.medium.index,
                range: anchor.range
              };
              model.media.push(image);
            }
          });
        }
      }

      var backgroundRel = model.background && rels[model.background.rId];

      if (backgroundRel) {
        var target = backgroundRel.Target.split('/media/')[1];
        var imageId = options.mediaIndex && options.mediaIndex[target];

        if (imageId !== undefined) {
          model.media.push({
            type: 'background',
            imageId: imageId
          });
        }
      }

      model.tables = (model.tables || []).map(function (tablePart) {
        var rel = rels[tablePart.rId];
        return options.tables[rel.Target];
      });
      delete model.relationships;
      delete model.hyperlinks;
      delete model.comments;
    }
  }]);

  return WorkSheetXform;
}(BaseXform);

WorkSheetXform.WORKSHEET_ATTRIBUTES = {
  xmlns: 'http://schemas.openxmlformats.org/spreadsheetml/2006/main',
  'xmlns:r': 'http://schemas.openxmlformats.org/officeDocument/2006/relationships',
  'xmlns:mc': 'http://schemas.openxmlformats.org/markup-compatibility/2006',
  'mc:Ignorable': 'x14ac',
  'xmlns:x14ac': 'http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac'
};
module.exports = WorkSheetXform;


},{"../../../utils/col-cache":17,"../../../utils/under-dash":22,"../../../utils/xml-stream":24,"../../rel-type":27,"../base-xform":28,"../list-xform":58,"./auto-filter-xform":59,"./cf/conditional-formattings-xform":65,"./col-xform":70,"./data-validations-xform":71,"./dimension-xform":72,"./drawing-xform":73,"./header-footer-xform":74,"./hyperlink-xform":75,"./merge-cell-xform":76,"./merges":77,"./page-margins-xform":80,"./page-setup-xform":82,"./picture-xform":83,"./print-options-xform":84,"./row-breaks-xform":85,"./row-xform":86,"./sheet-format-properties-xform":87,"./sheet-properties-xform":88,"./sheet-protection-xform":89,"./sheet-view-xform":90,"./table-part-xform":91}],93:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var BooleanXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(BooleanXform, _BaseXform);

  function BooleanXform(options) {
    var _this;

    _classCallCheck(this, BooleanXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(BooleanXform).call(this));
    _this.tag = options.tag;
    _this.attr = options.attr;
    return _this;
  }

  _createClass(BooleanXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model) {
        xmlStream.openNode(this.tag);
        xmlStream.closeNode();
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === this.tag) {
        this.model = true;
      }
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }]);

  return BooleanXform;
}(BaseXform);

module.exports = BooleanXform;


},{"../base-xform":28}],94:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var DateXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(DateXform, _BaseXform);

  function DateXform(options) {
    var _this;

    _classCallCheck(this, DateXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(DateXform).call(this));
    _this.tag = options.tag;
    _this.attr = options.attr;
    _this.attrs = options.attrs;

    _this._format = options.format || function (dt) {
      try {
        if (Number.isNaN(dt.getTime())) return '';
        return dt.toISOString();
      } catch (e) {
        return '';
      }
    };

    _this._parse = options.parse || function (str) {
      return new Date(str);
    };

    return _this;
  }

  _createClass(DateXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model) {
        xmlStream.openNode(this.tag);

        if (this.attrs) {
          xmlStream.addAttributes(this.attrs);
        }

        if (this.attr) {
          xmlStream.addAttribute(this.attr, this._format(model));
        } else {
          xmlStream.writeText(this._format(model));
        }

        xmlStream.closeNode();
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === this.tag) {
        if (this.attr) {
          this.model = this._parse(node.attributes[this.attr]);
        } else {
          this.text = [];
        }
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (!this.attr) {
        this.text.push(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose() {
      if (!this.attr) {
        this.model = this._parse(this.text.join(''));
      }

      return false;
    }
  }]);

  return DateXform;
}(BaseXform);

module.exports = DateXform;


},{"../base-xform":28}],95:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var IntegerXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(IntegerXform, _BaseXform);

  function IntegerXform(options) {
    var _this;

    _classCallCheck(this, IntegerXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(IntegerXform).call(this));
    _this.tag = options.tag;
    _this.attr = options.attr;
    _this.attrs = options.attrs; // option to render zero

    _this.zero = options.zero;
    return _this;
  }

  _createClass(IntegerXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      // int is different to float in that zero is not rendered
      if (model || this.zero) {
        xmlStream.openNode(this.tag);

        if (this.attrs) {
          xmlStream.addAttributes(this.attrs);
        }

        if (this.attr) {
          xmlStream.addAttribute(this.attr, model);
        } else {
          xmlStream.writeText(model);
        }

        xmlStream.closeNode();
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === this.tag) {
        if (this.attr) {
          this.model = parseInt(node.attributes[this.attr], 10);
        } else {
          this.text = [];
        }

        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (!this.attr) {
        this.text.push(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose() {
      if (!this.attr) {
        this.model = parseInt(this.text.join('') || 0, 10);
      }

      return false;
    }
  }]);

  return IntegerXform;
}(BaseXform);

module.exports = IntegerXform;


},{"../base-xform":28}],96:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var StringXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(StringXform, _BaseXform);

  function StringXform(options) {
    var _this;

    _classCallCheck(this, StringXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(StringXform).call(this));
    _this.tag = options.tag;
    _this.attr = options.attr;
    _this.attrs = options.attrs;
    return _this;
  }

  _createClass(StringXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model !== undefined) {
        xmlStream.openNode(this.tag);

        if (this.attrs) {
          xmlStream.addAttributes(this.attrs);
        }

        if (this.attr) {
          xmlStream.addAttribute(this.attr, model);
        } else {
          xmlStream.writeText(model);
        }

        xmlStream.closeNode();
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === this.tag) {
        if (this.attr) {
          this.model = node.attributes[this.attr];
        } else {
          this.text = [];
        }
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (!this.attr) {
        this.text.push(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose() {
      if (!this.attr) {
        this.model = this.text.join('');
      }

      return false;
    }
  }]);

  return StringXform;
}(BaseXform);

module.exports = StringXform;


},{"../base-xform":28}],97:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('./base-xform');

var XmlStream = require('../../utils/xml-stream'); // const model = {
//   tag: 'name',
//   $: {attr: 'value'},
//   c: [
//     { tag: 'child' }
//   ],
//   t: 'some text'
// };


function build(xmlStream, model) {
  xmlStream.openNode(model.tag, model.$);

  if (model.c) {
    model.c.forEach(function (child) {
      build(xmlStream, child);
    });
  }

  if (model.t) {
    xmlStream.writeText(model.t);
  }

  xmlStream.closeNode();
}

var StaticXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(StaticXform, _BaseXform);

  function StaticXform(model) {
    var _this;

    _classCallCheck(this, StaticXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(StaticXform).call(this)); // This class is an optimisation for static (unimportant and unchanging) xml
    // It is stateless - apart from its static model and so can be used as a singleton
    // Being stateless - it will only track entry to and exit from it's root xml tag during parsing and nothing else
    // Known issues:
    //    since stateless - parseOpen always returns true. Parent xform must know when to start using this xform
    //    if the root tag is recursive, the parsing will behave unpredictably

    _this._model = model;
    return _this;
  }

  _createClass(StaticXform, [{
    key: "render",
    value: function render(xmlStream) {
      if (!this._xml) {
        var stream = new XmlStream();
        build(stream, this._model);
        this._xml = stream.xml;
      }

      xmlStream.writeXml(this._xml);
    }
  }, {
    key: "parseOpen",
    value: function parseOpen() {
      return true;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      switch (name) {
        case this._model.tag:
          return false;

        default:
          return true;
      }
    }
  }]);

  return StaticXform;
}(BaseXform);

module.exports = StaticXform;


},{"../../utils/xml-stream":24,"./base-xform":28}],98:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var TextXform = require('./text-xform');

var RichTextXform = require('./rich-text-xform');

var BaseXform = require('../base-xform'); // <rPh sb="0" eb="1">
//   <t>(its pronounciation in KATAKANA)</t>
// </rPh>


var PhoneticTextXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(PhoneticTextXform, _BaseXform);

  function PhoneticTextXform() {
    var _this;

    _classCallCheck(this, PhoneticTextXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(PhoneticTextXform).call(this));
    _this.map = {
      r: new RichTextXform(),
      t: new TextXform()
    };
    return _this;
  }

  _createClass(PhoneticTextXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode(this.tag, {
        sb: model.sb || 0,
        eb: model.eb || 0
      });

      if (model && model.hasOwnProperty('richText') && model.richText) {
        var r = this.map.r;
        model.richText.forEach(function (text) {
          r.render(xmlStream, text);
        });
      } else if (model) {
        this.map.t.render(xmlStream, model.text);
      }

      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      var name = node.name;

      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      if (name === this.tag) {
        this.model = {
          sb: parseInt(node.attributes.sb, 10),
          eb: parseInt(node.attributes.eb, 10)
        };
        return true;
      }

      this.parser = this.map[name];

      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          switch (name) {
            case 'r':
              {
                var rt = this.model.richText;

                if (!rt) {
                  rt = this.model.richText = [];
                }

                rt.push(this.parser.model);
                break;
              }

            case 't':
              this.model.text = this.parser.model;
              break;

            default:
              break;
          }

          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case this.tag:
          return false;

        default:
          return true;
      }
    }
  }, {
    key: "tag",
    get: function get() {
      return 'rPh';
    }
  }]);

  return PhoneticTextXform;
}(BaseXform);

module.exports = PhoneticTextXform;


},{"../base-xform":28,"./rich-text-xform":99,"./text-xform":102}],99:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var TextXform = require('./text-xform');

var FontXform = require('../style/font-xform');

var BaseXform = require('../base-xform'); // <r>
//   <rPr>
//     <sz val="11"/>
//     <color theme="1" tint="5"/>
//     <rFont val="Calibri"/>
//     <family val="2"/>
//     <scheme val="minor"/>
//   </rPr>
//   <t xml:space="preserve"> is </t>
// </r>


var RichTextXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(RichTextXform, _BaseXform);

  function RichTextXform(model) {
    var _this;

    _classCallCheck(this, RichTextXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(RichTextXform).call(this));
    _this.model = model;
    return _this;
  }

  _createClass(RichTextXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      model = model || this.model;
      xmlStream.openNode('r');

      if (model.font) {
        this.fontXform.render(xmlStream, model.font);
      }

      this.textXform.render(xmlStream, model.text);
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case 'r':
          this.model = {};
          return true;

        case 't':
          this.parser = this.textXform;
          this.parser.parseOpen(node);
          return true;

        case 'rPr':
          this.parser = this.fontXform;
          this.parser.parseOpen(node);
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      switch (name) {
        case 'r':
          return false;

        case 't':
          this.model.text = this.parser.model;
          this.parser = undefined;
          return true;

        case 'rPr':
          this.model.font = this.parser.model;
          this.parser = undefined;
          return true;

        default:
          if (this.parser) {
            this.parser.parseClose(name);
          }

          return true;
      }
    }
  }, {
    key: "tag",
    get: function get() {
      return 'r';
    }
  }, {
    key: "textXform",
    get: function get() {
      return this._textXform || (this._textXform = new TextXform());
    }
  }, {
    key: "fontXform",
    get: function get() {
      return this._fontXform || (this._fontXform = new FontXform(RichTextXform.FONT_OPTIONS));
    }
  }]);

  return RichTextXform;
}(BaseXform);

RichTextXform.FONT_OPTIONS = {
  tagName: 'rPr',
  fontNameTag: 'rFont'
};
module.exports = RichTextXform;


},{"../base-xform":28,"../style/font-xform":108,"./text-xform":102}],100:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var TextXform = require('./text-xform');

var RichTextXform = require('./rich-text-xform');

var PhoneticTextXform = require('./phonetic-text-xform');

var BaseXform = require('../base-xform'); // <si>
//   <r></r><r></r>...
// </si>
// <si>
//   <t></t>
// </si>


var SharedStringXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(SharedStringXform, _BaseXform);

  function SharedStringXform(model) {
    var _this;

    _classCallCheck(this, SharedStringXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(SharedStringXform).call(this));
    _this.model = model;
    _this.map = {
      r: new RichTextXform(),
      t: new TextXform(),
      rPh: new PhoneticTextXform()
    };
    return _this;
  }

  _createClass(SharedStringXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode(this.tag);

      if (model && model.hasOwnProperty('richText') && model.richText) {
        var r = this.map.r;
        model.richText.forEach(function (text) {
          r.render(xmlStream, text);
        });
      } else if (model !== undefined && model !== null) {
        this.map.t.render(xmlStream, model);
      }

      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      var name = node.name;

      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      if (name === this.tag) {
        this.model = {};
        return true;
      }

      this.parser = this.map[name];

      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          switch (name) {
            case 'r':
              {
                var rt = this.model.richText;

                if (!rt) {
                  rt = this.model.richText = [];
                }

                rt.push(this.parser.model);
                break;
              }

            case 't':
              this.model = this.parser.model;
              break;

            default:
              break;
          }

          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case this.tag:
          return false;

        default:
          return true;
      }
    }
  }, {
    key: "tag",
    get: function get() {
      return 'si';
    }
  }]);

  return SharedStringXform;
}(BaseXform);

module.exports = SharedStringXform;


},{"../base-xform":28,"./phonetic-text-xform":98,"./rich-text-xform":99,"./text-xform":102}],101:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var XmlStream = require('../../../utils/xml-stream');

var BaseXform = require('../base-xform');

var SharedStringXform = require('./shared-string-xform');

var SharedStringsXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(SharedStringsXform, _BaseXform);

  function SharedStringsXform(model) {
    var _this;

    _classCallCheck(this, SharedStringsXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(SharedStringsXform).call(this));
    _this.model = model || {
      values: [],
      count: 0
    };
    _this.hash = {};
    _this.rich = {};
    return _this;
  }

  _createClass(SharedStringsXform, [{
    key: "getString",
    value: function getString(index) {
      return this.model.values[index];
    }
  }, {
    key: "add",
    value: function add(value) {
      return value.richText ? this.addRichText(value) : this.addText(value);
    }
  }, {
    key: "addText",
    value: function addText(value) {
      var index = this.hash[value];

      if (index === undefined) {
        index = this.hash[value] = this.model.values.length;
        this.model.values.push(value);
      }

      this.model.count++;
      return index;
    }
  }, {
    key: "addRichText",
    value: function addRichText(value) {
      // TODO: add WeakMap here
      var xml = this.sharedStringXform.toXml(value);
      var index = this.rich[xml];

      if (index === undefined) {
        index = this.rich[xml] = this.model.values.length;
        this.model.values.push(value);
      }

      this.model.count++;
      return index;
    } // <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
    // <sst xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" count="<%=totalRefs%>" uniqueCount="<%=count%>">
    //   <si><t><%=text%></t></si>
    //   <si><r><rPr></rPr><t></t></r></si>
    // </sst>

  }, {
    key: "render",
    value: function render(xmlStream, model) {
      model = model || this._values;
      xmlStream.openXml(XmlStream.StdDocAttributes);
      xmlStream.openNode('sst', {
        xmlns: 'http://schemas.openxmlformats.org/spreadsheetml/2006/main',
        count: model.count,
        uniqueCount: model.values.length
      });
      var sx = this.sharedStringXform;
      model.values.forEach(function (sharedString) {
        sx.render(xmlStream, sharedString);
      });
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case 'sst':
          return true;

        case 'si':
          this.parser = this.sharedStringXform;
          this.parser.parseOpen(node);
          return true;

        default:
          throw new Error("Unexpected xml node in parseOpen: ".concat(JSON.stringify(node)));
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.model.values.push(this.parser.model);
          this.model.count++;
          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case 'sst':
          return false;

        default:
          throw new Error("Unexpected xml node in parseClose: ".concat(name));
      }
    }
  }, {
    key: "sharedStringXform",
    get: function get() {
      return this._sharedStringXform || (this._sharedStringXform = new SharedStringXform());
    }
  }, {
    key: "values",
    get: function get() {
      return this.model.values;
    }
  }, {
    key: "uniqueCount",
    get: function get() {
      return this.model.values.length;
    }
  }, {
    key: "count",
    get: function get() {
      return this.model.count;
    }
  }]);

  return SharedStringsXform;
}(BaseXform);

module.exports = SharedStringsXform;


},{"../../../utils/xml-stream":24,"../base-xform":28,"./shared-string-xform":100}],102:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform'); //   <t xml:space="preserve"> is </t>


var TextXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(TextXform, _BaseXform);

  function TextXform() {
    _classCallCheck(this, TextXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(TextXform).apply(this, arguments));
  }

  _createClass(TextXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode('t');

      if (/^\s|\n|\s$/.test(model)) {
        xmlStream.addAttribute('xml:space', 'preserve');
      }

      xmlStream.writeText(model);
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      switch (node.name) {
        case 't':
          this._text = [];
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      this._text.push(text);
    }
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 't';
    }
  }, {
    key: "model",
    get: function get() {
      return this._text.join('').replace(/_x([0-9A-F]{4})_/g, function ($0, $1) {
        return String.fromCharCode(parseInt($1, 16));
      });
    }
  }]);

  return TextXform;
}(BaseXform);

module.exports = TextXform;


},{"../base-xform":28}],103:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var Enums = require('../../../doc/enums');

var utils = require('../../../utils/utils');

var BaseXform = require('../base-xform');

var validation = {
  horizontalValues: ['left', 'center', 'right', 'fill', 'centerContinuous', 'distributed', 'justify'].reduce(function (p, v) {
    p[v] = true;
    return p;
  }, {}),
  horizontal: function horizontal(value) {
    return this.horizontalValues[value] ? value : undefined;
  },
  verticalValues: ['top', 'middle', 'bottom', 'distributed', 'justify'].reduce(function (p, v) {
    p[v] = true;
    return p;
  }, {}),
  vertical: function vertical(value) {
    if (value === 'middle') return 'center';
    return this.verticalValues[value] ? value : undefined;
  },
  wrapText: function wrapText(value) {
    return value ? true : undefined;
  },
  shrinkToFit: function shrinkToFit(value) {
    return value ? true : undefined;
  },
  textRotation: function textRotation(value) {
    switch (value) {
      case 'vertical':
        return value;

      default:
        value = utils.validInt(value);
        return value >= -90 && value <= 90 ? value : undefined;
    }
  },
  indent: function indent(value) {
    value = utils.validInt(value);
    return Math.max(0, value);
  },
  readingOrder: function readingOrder(value) {
    switch (value) {
      case 'ltr':
        return Enums.ReadingOrder.LeftToRight;

      case 'rtl':
        return Enums.ReadingOrder.RightToLeft;

      default:
        return undefined;
    }
  }
};
var textRotationXform = {
  toXml: function toXml(textRotation) {
    textRotation = validation.textRotation(textRotation);

    if (textRotation) {
      if (textRotation === 'vertical') {
        return 255;
      }

      var tr = Math.round(textRotation);

      if (tr >= 0 && tr <= 90) {
        return tr;
      }

      if (tr < 0 && tr >= -90) {
        return 90 - tr;
      }
    }

    return undefined;
  },
  toModel: function toModel(textRotation) {
    var tr = utils.validInt(textRotation);

    if (tr !== undefined) {
      if (tr === 255) {
        return 'vertical';
      }

      if (tr >= 0 && tr <= 90) {
        return tr;
      }

      if (tr > 90 && tr <= 180) {
        return 90 - tr;
      }
    }

    return undefined;
  }
}; // Alignment encapsulates translation from style.alignment model to/from xlsx

var AlignmentXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(AlignmentXform, _BaseXform);

  function AlignmentXform() {
    _classCallCheck(this, AlignmentXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(AlignmentXform).apply(this, arguments));
  }

  _createClass(AlignmentXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.addRollback();
      xmlStream.openNode('alignment');
      var isValid = false;

      function add(name, value) {
        if (value) {
          xmlStream.addAttribute(name, value);
          isValid = true;
        }
      }

      add('horizontal', validation.horizontal(model.horizontal));
      add('vertical', validation.vertical(model.vertical));
      add('wrapText', validation.wrapText(model.wrapText) ? '1' : false);
      add('shrinkToFit', validation.shrinkToFit(model.shrinkToFit) ? '1' : false);
      add('indent', validation.indent(model.indent));
      add('textRotation', textRotationXform.toXml(model.textRotation));
      add('readingOrder', validation.readingOrder(model.readingOrder));
      xmlStream.closeNode();

      if (isValid) {
        xmlStream.commit();
      } else {
        xmlStream.rollback();
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      var model = {};
      var valid = false;

      function add(truthy, name, value) {
        if (truthy) {
          model[name] = value;
          valid = true;
        }
      }

      add(node.attributes.horizontal, 'horizontal', node.attributes.horizontal);
      add(node.attributes.vertical, 'vertical', node.attributes.vertical === 'center' ? 'middle' : node.attributes.vertical);
      add(node.attributes.wrapText, 'wrapText', !!node.attributes.wrapText);
      add(node.attributes.shrinkToFit, 'shrinkToFit', !!node.attributes.shrinkToFit);
      add(node.attributes.indent, 'indent', parseInt(node.attributes.indent, 10));
      add(node.attributes.textRotation, 'textRotation', textRotationXform.toModel(node.attributes.textRotation));
      add(node.attributes.readingOrder, 'readingOrder', node.attributes.readingOrder === '2' ? 'rtl' : 'ltr');
      this.model = valid ? model : null;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'alignment';
    }
  }]);

  return AlignmentXform;
}(BaseXform);

module.exports = AlignmentXform;


},{"../../../doc/enums":7,"../../../utils/utils":23,"../base-xform":28}],104:[function(require,module,exports){
"use strict";

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

/* eslint-disable max-classes-per-file */
var BaseXform = require('../base-xform');

var ColorXform = require('./color-xform');

var EdgeXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(EdgeXform, _BaseXform);

  function EdgeXform(name) {
    var _this;

    _classCallCheck(this, EdgeXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(EdgeXform).call(this));
    _this.name = name;
    _this.map = {
      color: new ColorXform()
    };
    return _this;
  }

  _createClass(EdgeXform, [{
    key: "render",
    value: function render(xmlStream, model, defaultColor) {
      var color = model && model.color || defaultColor || this.defaultColor;
      xmlStream.openNode(this.name);

      if (model && model.style) {
        xmlStream.addAttribute('style', model.style);

        if (color) {
          this.map.color.render(xmlStream, color);
        }
      }

      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case this.name:
          {
            var style = node.attributes.style;

            if (style) {
              this.model = {
                style: style
              };
            } else {
              this.model = undefined;
            }

            return true;
          }

        case 'color':
          this.parser = this.map.color;
          this.parser.parseOpen(node);
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.parser = undefined;
        }

        return true;
      }

      if (name === this.name) {
        if (this.map.color.model) {
          if (!this.model) {
            this.model = {};
          }

          this.model.color = this.map.color.model;
        }
      }

      return false;
    }
  }, {
    key: "validStyle",
    value: function validStyle(value) {
      return EdgeXform.validStyleValues[value];
    }
  }, {
    key: "tag",
    get: function get() {
      return this.name;
    }
  }]);

  return EdgeXform;
}(BaseXform);

EdgeXform.validStyleValues = ['thin', 'dotted', 'dashDot', 'hair', 'dashDotDot', 'slantDashDot', 'mediumDashed', 'mediumDashDotDot', 'mediumDashDot', 'medium', 'double', 'thick'].reduce(function (p, v) {
  p[v] = true;
  return p;
}, {}); // Border encapsulates translation from border model to/from xlsx

var BorderXform =
/*#__PURE__*/
function (_BaseXform2) {
  _inherits(BorderXform, _BaseXform2);

  function BorderXform() {
    var _this2;

    _classCallCheck(this, BorderXform);

    _this2 = _possibleConstructorReturn(this, _getPrototypeOf(BorderXform).call(this));
    _this2.map = {
      top: new EdgeXform('top'),
      left: new EdgeXform('left'),
      bottom: new EdgeXform('bottom'),
      right: new EdgeXform('right'),
      diagonal: new EdgeXform('diagonal')
    };
    return _this2;
  }

  _createClass(BorderXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      var color = model.color;
      xmlStream.openNode('border');

      if (model.diagonal && model.diagonal.style) {
        if (model.diagonal.up) {
          xmlStream.addAttribute('diagonalUp', '1');
        }

        if (model.diagonal.down) {
          xmlStream.addAttribute('diagonalDown', '1');
        }
      }

      function add(edgeModel, edgeXform) {
        if (edgeModel && !edgeModel.color && model.color) {
          // don't mess with incoming models
          edgeModel = _objectSpread({}, edgeModel, {
            color: model.color
          });
        }

        edgeXform.render(xmlStream, edgeModel, color);
      }

      add(model.left, this.map.left);
      add(model.right, this.map.right);
      add(model.top, this.map.top);
      add(model.bottom, this.map.bottom);
      add(model.diagonal, this.map.diagonal);
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case 'border':
          this.reset();
          this.diagonalUp = !!node.attributes.diagonalUp;
          this.diagonalDown = !!node.attributes.diagonalDown;
          return true;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
            return true;
          }

          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.parser = undefined;
        }

        return true;
      }

      if (name === 'border') {
        var model = this.model = {};

        var add = function add(key, edgeModel, extensions) {
          if (edgeModel) {
            if (extensions) {
              Object.assign(edgeModel, extensions);
            }

            model[key] = edgeModel;
          }
        };

        add('left', this.map.left.model);
        add('right', this.map.right.model);
        add('top', this.map.top.model);
        add('bottom', this.map.bottom.model);
        add('diagonal', this.map.diagonal.model, {
          up: this.diagonalUp,
          down: this.diagonalDown
        });
      }

      return false;
    }
  }]);

  return BorderXform;
}(BaseXform);

module.exports = BorderXform;


},{"../base-xform":28,"./color-xform":105}],105:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform'); // Color encapsulates translation from color model to/from xlsx


var ColorXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(ColorXform, _BaseXform);

  function ColorXform(name) {
    var _this;

    _classCallCheck(this, ColorXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(ColorXform).call(this)); // this.name controls the xm node name

    _this.name = name || 'color';
    return _this;
  }

  _createClass(ColorXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      if (model) {
        xmlStream.openNode(this.name);

        if (model.argb) {
          xmlStream.addAttribute('rgb', model.argb);
        } else if (model.theme !== undefined) {
          xmlStream.addAttribute('theme', model.theme);

          if (model.tint !== undefined) {
            xmlStream.addAttribute('tint', model.tint);
          }
        } else if (model.indexed !== undefined) {
          xmlStream.addAttribute('indexed', model.indexed);
        } else {
          xmlStream.addAttribute('auto', '1');
        }

        xmlStream.closeNode();
        return true;
      }

      return false;
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === this.name) {
        if (node.attributes.rgb) {
          this.model = {
            argb: node.attributes.rgb
          };
        } else if (node.attributes.theme) {
          this.model = {
            theme: parseInt(node.attributes.theme, 10)
          };

          if (node.attributes.tint) {
            this.model.tint = parseFloat(node.attributes.tint);
          }
        } else if (node.attributes.indexed) {
          this.model = {
            indexed: parseInt(node.attributes.indexed, 10)
          };
        } else {
          this.model = undefined;
        }

        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return this.name;
    }
  }]);

  return ColorXform;
}(BaseXform);

module.exports = ColorXform;


},{"../base-xform":28}],106:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var AlignmentXform = require('./alignment-xform');

var BorderXform = require('./border-xform');

var FillXform = require('./fill-xform');

var FontXform = require('./font-xform');

var NumFmtXform = require('./numfmt-xform');

var ProtectionXform = require('./protection-xform'); // <xf numFmtId="[numFmtId]" fontId="[fontId]" fillId="[fillId]" borderId="[xf.borderId]" xfId="[xfId]">
//   Optional <alignment>
//   Optional <protection>
// </xf>
// Style assists translation from style model to/from xlsx


var DxfXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(DxfXform, _BaseXform);

  function DxfXform() {
    var _this;

    _classCallCheck(this, DxfXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(DxfXform).call(this));
    _this.map = {
      alignment: new AlignmentXform(),
      border: new BorderXform(),
      fill: new FillXform(),
      font: new FontXform(),
      numFmt: new NumFmtXform(),
      protection: new ProtectionXform()
    };
    return _this;
  }

  _createClass(DxfXform, [{
    key: "render",
    // how do we generate dxfid?
    value: function render(xmlStream, model) {
      xmlStream.openNode(this.tag);

      if (model.alignment) {
        this.map.alignment.render(xmlStream, model.alignment);
      }

      if (model.border) {
        this.map.border.render(xmlStream, model.border);
      }

      if (model.fill) {
        this.map.fill.render(xmlStream, model.fill);
      }

      if (model.font) {
        this.map.font.render(xmlStream, model.font);
      }

      if (model.numFmt) {
        this.map.numFmt.render(xmlStream, model.numFmt);
      }

      if (model.protection) {
        this.map.protection.render(xmlStream, model.protection);
      }

      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case this.tag:
          // this node is often repeated. Need to reset children
          this.reset();
          return true;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
          }

          return true;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.parser = undefined;
        }

        return true;
      }

      if (name === this.tag) {
        this.model = {
          alignment: this.map.alignment.model,
          border: this.map.border.model,
          fill: this.map.fill.model,
          font: this.map.font.model,
          numFmt: this.map.numFmt.model,
          protection: this.map.protection.model
        };
        return false;
      }

      return true;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'dxf';
    }
  }]);

  return DxfXform;
}(BaseXform);

module.exports = DxfXform;


},{"../base-xform":28,"./alignment-xform":103,"./border-xform":104,"./fill-xform":107,"./font-xform":108,"./numfmt-xform":109,"./protection-xform":110}],107:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

/* eslint-disable max-classes-per-file */
var BaseXform = require('../base-xform');

var ColorXform = require('./color-xform');

var StopXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(StopXform, _BaseXform);

  function StopXform() {
    var _this;

    _classCallCheck(this, StopXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(StopXform).call(this));
    _this.map = {
      color: new ColorXform()
    };
    return _this;
  }

  _createClass(StopXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode('stop');
      xmlStream.addAttribute('position', model.position);
      this.map.color.render(xmlStream, model.color);
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case 'stop':
          this.model = {
            position: parseFloat(node.attributes.position)
          };
          return true;

        case 'color':
          this.parser = this.map.color;
          this.parser.parseOpen(node);
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.model.color = this.parser.model;
          this.parser = undefined;
        }

        return true;
      }

      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'stop';
    }
  }]);

  return StopXform;
}(BaseXform);

var PatternFillXform =
/*#__PURE__*/
function (_BaseXform2) {
  _inherits(PatternFillXform, _BaseXform2);

  function PatternFillXform() {
    var _this2;

    _classCallCheck(this, PatternFillXform);

    _this2 = _possibleConstructorReturn(this, _getPrototypeOf(PatternFillXform).call(this));
    _this2.map = {
      fgColor: new ColorXform('fgColor'),
      bgColor: new ColorXform('bgColor')
    };
    return _this2;
  }

  _createClass(PatternFillXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode('patternFill');
      xmlStream.addAttribute('patternType', model.pattern);

      if (model.fgColor) {
        this.map.fgColor.render(xmlStream, model.fgColor);
      }

      if (model.bgColor) {
        this.map.bgColor.render(xmlStream, model.bgColor);
      }

      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case 'patternFill':
          this.model = {
            type: 'pattern',
            pattern: node.attributes.patternType
          };
          return true;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
            return true;
          }

          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          if (this.parser.model) {
            this.model[name] = this.parser.model;
          }

          this.parser = undefined;
        }

        return true;
      }

      return false;
    }
  }, {
    key: "name",
    get: function get() {
      return 'pattern';
    }
  }, {
    key: "tag",
    get: function get() {
      return 'patternFill';
    }
  }]);

  return PatternFillXform;
}(BaseXform);

var GradientFillXform =
/*#__PURE__*/
function (_BaseXform3) {
  _inherits(GradientFillXform, _BaseXform3);

  function GradientFillXform() {
    var _this3;

    _classCallCheck(this, GradientFillXform);

    _this3 = _possibleConstructorReturn(this, _getPrototypeOf(GradientFillXform).call(this));
    _this3.map = {
      stop: new StopXform()
    }; // if (model) {
    //   this.gradient = model.gradient;
    //   if (model.center) {
    //     this.center = model.center;
    //   }
    //   if (model.degree !== undefined) {
    //     this.degree = model.degree;
    //   }
    //   this.stops = model.stops.map(function(stop) { return new StopXform(stop); });
    // } else {
    //   this.stops = [];
    // }

    return _this3;
  }

  _createClass(GradientFillXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode('gradientFill');

      switch (model.gradient) {
        case 'angle':
          xmlStream.addAttribute('degree', model.degree);
          break;

        case 'path':
          xmlStream.addAttribute('type', 'path');

          if (model.center.left) {
            xmlStream.addAttribute('left', model.center.left);

            if (model.center.right === undefined) {
              xmlStream.addAttribute('right', model.center.left);
            }
          }

          if (model.center.right) {
            xmlStream.addAttribute('right', model.center.right);
          }

          if (model.center.top) {
            xmlStream.addAttribute('top', model.center.top);

            if (model.center.bottom === undefined) {
              xmlStream.addAttribute('bottom', model.center.top);
            }
          }

          if (model.center.bottom) {
            xmlStream.addAttribute('bottom', model.center.bottom);
          }

          break;

        default:
          break;
      }

      var stopXform = this.map.stop;
      model.stops.forEach(function (stopModel) {
        stopXform.render(xmlStream, stopModel);
      });
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case 'gradientFill':
          {
            var model = this.model = {
              stops: []
            };

            if (node.attributes.degree) {
              model.gradient = 'angle';
              model.degree = parseInt(node.attributes.degree, 10);
            } else if (node.attributes.type === 'path') {
              model.gradient = 'path';
              model.center = {
                left: node.attributes.left ? parseFloat(node.attributes.left) : 0,
                top: node.attributes.top ? parseFloat(node.attributes.top) : 0
              };

              if (node.attributes.right !== node.attributes.left) {
                model.center.right = node.attributes.right ? parseFloat(node.attributes.right) : 0;
              }

              if (node.attributes.bottom !== node.attributes.top) {
                model.center.bottom = node.attributes.bottom ? parseFloat(node.attributes.bottom) : 0;
              }
            }

            return true;
          }

        case 'stop':
          this.parser = this.map.stop;
          this.parser.parseOpen(node);
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.model.stops.push(this.parser.model);
          this.parser = undefined;
        }

        return true;
      }

      return false;
    }
  }, {
    key: "name",
    get: function get() {
      return 'gradient';
    }
  }, {
    key: "tag",
    get: function get() {
      return 'gradientFill';
    }
  }]);

  return GradientFillXform;
}(BaseXform); // Fill encapsulates translation from fill model to/from xlsx


var FillXform =
/*#__PURE__*/
function (_BaseXform4) {
  _inherits(FillXform, _BaseXform4);

  function FillXform() {
    var _this4;

    _classCallCheck(this, FillXform);

    _this4 = _possibleConstructorReturn(this, _getPrototypeOf(FillXform).call(this));
    _this4.map = {
      patternFill: new PatternFillXform(),
      gradientFill: new GradientFillXform()
    };
    return _this4;
  }

  _createClass(FillXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.addRollback();
      xmlStream.openNode('fill');

      switch (model.type) {
        case 'pattern':
          this.map.patternFill.render(xmlStream, model);
          break;

        case 'gradient':
          this.map.gradientFill.render(xmlStream, model);
          break;

        default:
          xmlStream.rollback();
          return;
      }

      xmlStream.closeNode();
      xmlStream.commit();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case 'fill':
          this.model = {};
          return true;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
            return true;
          }

          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.model = this.parser.model;
          this.model.type = this.parser.name;
          this.parser = undefined;
        }

        return true;
      }

      return false;
    }
  }, {
    key: "validStyle",
    value: function validStyle(value) {
      return FillXform.validPatternValues[value];
    }
  }, {
    key: "tag",
    get: function get() {
      return 'fill';
    }
  }]);

  return FillXform;
}(BaseXform);

FillXform.validPatternValues = ['none', 'solid', 'darkVertical', 'darkGray', 'mediumGray', 'lightGray', 'gray125', 'gray0625', 'darkHorizontal', 'darkVertical', 'darkDown', 'darkUp', 'darkGrid', 'darkTrellis', 'lightHorizontal', 'lightVertical', 'lightDown', 'lightUp', 'lightGrid', 'lightTrellis', 'lightGrid'].reduce(function (p, v) {
  p[v] = true;
  return p;
}, {});
FillXform.StopXform = StopXform;
FillXform.PatternFillXform = PatternFillXform;
FillXform.GradientFillXform = GradientFillXform;
module.exports = FillXform;


},{"../base-xform":28,"./color-xform":105}],108:[function(require,module,exports){
'use strict';

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var ColorXform = require('./color-xform');

var BooleanXform = require('../simple/boolean-xform');

var IntegerXform = require('../simple/integer-xform');

var StringXform = require('../simple/string-xform');

var UnderlineXform = require('./underline-xform');

var _ = require('../../../utils/under-dash');

var BaseXform = require('../base-xform'); // Font encapsulates translation from font model to xlsx


var FontXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(FontXform, _BaseXform);

  function FontXform(options) {
    var _this;

    _classCallCheck(this, FontXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(FontXform).call(this));
    _this.options = options || FontXform.OPTIONS;
    _this.map = {
      b: {
        prop: 'bold',
        xform: new BooleanXform({
          tag: 'b',
          attr: 'val'
        })
      },
      i: {
        prop: 'italic',
        xform: new BooleanXform({
          tag: 'i',
          attr: 'val'
        })
      },
      u: {
        prop: 'underline',
        xform: new UnderlineXform()
      },
      charset: {
        prop: 'charset',
        xform: new IntegerXform({
          tag: 'charset',
          attr: 'val'
        })
      },
      color: {
        prop: 'color',
        xform: new ColorXform()
      },
      condense: {
        prop: 'condense',
        xform: new BooleanXform({
          tag: 'condense',
          attr: 'val'
        })
      },
      extend: {
        prop: 'extend',
        xform: new BooleanXform({
          tag: 'extend',
          attr: 'val'
        })
      },
      family: {
        prop: 'family',
        xform: new IntegerXform({
          tag: 'family',
          attr: 'val'
        })
      },
      outline: {
        prop: 'outline',
        xform: new BooleanXform({
          tag: 'outline',
          attr: 'val'
        })
      },
      vertAlign: {
        prop: 'vertAlign',
        xform: new StringXform({
          tag: 'vertAlign',
          attr: 'val'
        })
      },
      scheme: {
        prop: 'scheme',
        xform: new StringXform({
          tag: 'scheme',
          attr: 'val'
        })
      },
      shadow: {
        prop: 'shadow',
        xform: new BooleanXform({
          tag: 'shadow',
          attr: 'val'
        })
      },
      strike: {
        prop: 'strike',
        xform: new BooleanXform({
          tag: 'strike',
          attr: 'val'
        })
      },
      sz: {
        prop: 'size',
        xform: new IntegerXform({
          tag: 'sz',
          attr: 'val'
        })
      }
    };
    _this.map[_this.options.fontNameTag] = {
      prop: 'name',
      xform: new StringXform({
        tag: _this.options.fontNameTag,
        attr: 'val'
      })
    };
    return _this;
  }

  _createClass(FontXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      var map = this.map;
      xmlStream.openNode(this.options.tagName);

      _.each(this.map, function (defn, tag) {
        map[tag].xform.render(xmlStream, model[defn.prop]);
      });

      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      if (this.map[node.name]) {
        this.parser = this.map[node.name].xform;
        return this.parser.parseOpen(node);
      }

      switch (node.name) {
        case this.options.tagName:
          this.model = {};
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser && !this.parser.parseClose(name)) {
        var item = this.map[name];

        if (this.parser.model) {
          this.model[item.prop] = this.parser.model;
        }

        this.parser = undefined;
        return true;
      }

      switch (name) {
        case this.options.tagName:
          return false;

        default:
          return true;
      }
    }
  }, {
    key: "tag",
    get: function get() {
      return this.options.tagName;
    }
  }]);

  return FontXform;
}(BaseXform);

FontXform.OPTIONS = {
  tagName: 'font',
  fontNameTag: 'name'
};
module.exports = FontXform;


},{"../../../utils/under-dash":22,"../base-xform":28,"../simple/boolean-xform":93,"../simple/integer-xform":95,"../simple/string-xform":96,"./color-xform":105,"./underline-xform":113}],109:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var _ = require('../../../utils/under-dash');

var defaultNumFormats = require('../../defaultnumformats');

var BaseXform = require('../base-xform');

function hashDefaultFormats() {
  var hash = {};

  _.each(defaultNumFormats, function (dnf, id) {
    if (dnf.f) {
      hash[dnf.f] = parseInt(id, 10);
    } // at some point, add the other cultures here...

  });

  return hash;
}

var defaultFmtHash = hashDefaultFormats(); // NumFmt encapsulates translation between number format and xlsx

var NumFmtXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(NumFmtXform, _BaseXform);

  function NumFmtXform(id, formatCode) {
    var _this;

    _classCallCheck(this, NumFmtXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(NumFmtXform).call(this));
    _this.id = id;
    _this.formatCode = formatCode;
    return _this;
  }

  _createClass(NumFmtXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.leafNode('numFmt', {
        numFmtId: model.id,
        formatCode: model.formatCode
      });
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      switch (node.name) {
        case 'numFmt':
          this.model = {
            id: parseInt(node.attributes.numFmtId, 10),
            formatCode: node.attributes.formatCode.replace(/[\\](.)/g, '$1')
          };
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'numFmt';
    }
  }]);

  return NumFmtXform;
}(BaseXform);

NumFmtXform.getDefaultFmtId = function getDefaultFmtId(formatCode) {
  return defaultFmtHash[formatCode];
};

NumFmtXform.getDefaultFmtCode = function getDefaultFmtCode(numFmtId) {
  return defaultNumFormats[numFmtId] && defaultNumFormats[numFmtId].f;
};

module.exports = NumFmtXform;


},{"../../../utils/under-dash":22,"../../defaultnumformats":26,"../base-xform":28}],110:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var validation = {
  boolean: function boolean(value, dflt) {
    if (value === undefined) {
      return dflt;
    }

    return value;
  }
}; // Protection encapsulates translation from style.protection model to/from xlsx

var ProtectionXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(ProtectionXform, _BaseXform);

  function ProtectionXform() {
    _classCallCheck(this, ProtectionXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(ProtectionXform).apply(this, arguments));
  }

  _createClass(ProtectionXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.addRollback();
      xmlStream.openNode('protection');
      var isValid = false;

      function add(name, value) {
        if (value !== undefined) {
          xmlStream.addAttribute(name, value);
          isValid = true;
        }
      }

      add('locked', validation.boolean(model.locked, true) ? undefined : '0');
      add('hidden', validation.boolean(model.hidden, false) ? '1' : undefined);
      xmlStream.closeNode();

      if (isValid) {
        xmlStream.commit();
      } else {
        xmlStream.rollback();
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      var model = {
        locked: !(node.attributes.locked === '0'),
        hidden: node.attributes.hidden === '1'
      }; // only want to record models that differ from defaults

      var isSignificant = !model.locked || model.hidden;
      this.model = isSignificant ? model : null;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'protection';
    }
  }]);

  return ProtectionXform;
}(BaseXform);

module.exports = ProtectionXform;


},{"../base-xform":28}],111:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var AlignmentXform = require('./alignment-xform');

var ProtectionXform = require('./protection-xform'); // <xf numFmtId="[numFmtId]" fontId="[fontId]" fillId="[fillId]" borderId="[xf.borderId]" xfId="[xfId]">
//   Optional <alignment>
//   Optional <protection>
// </xf>
// Style assists translation from style model to/from xlsx


var StyleXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(StyleXform, _BaseXform);

  function StyleXform(options) {
    var _this;

    _classCallCheck(this, StyleXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(StyleXform).call(this));
    _this.xfId = !!(options && options.xfId);
    _this.map = {
      alignment: new AlignmentXform(),
      protection: new ProtectionXform()
    };
    return _this;
  }

  _createClass(StyleXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openNode('xf', {
        numFmtId: model.numFmtId || 0,
        fontId: model.fontId || 0,
        fillId: model.fillId || 0,
        borderId: model.borderId || 0
      });

      if (this.xfId) {
        xmlStream.addAttribute('xfId', model.xfId || 0);
      }

      if (model.numFmtId) {
        xmlStream.addAttribute('applyNumberFormat', '1');
      }

      if (model.fontId) {
        xmlStream.addAttribute('applyFont', '1');
      }

      if (model.fillId) {
        xmlStream.addAttribute('applyFill', '1');
      }

      if (model.borderId) {
        xmlStream.addAttribute('applyBorder', '1');
      }

      if (model.alignment) {
        xmlStream.addAttribute('applyAlignment', '1');
      }

      if (model.protection) {
        xmlStream.addAttribute('applyProtection', '1');
      }
      /**
       * Rendering tags causes close of XML stream.
       * Therefore adding attributes must be done before rendering tags.
       */


      if (model.alignment) {
        this.map.alignment.render(xmlStream, model.alignment);
      }

      if (model.protection) {
        this.map.protection.render(xmlStream, model.protection);
      }

      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      } // used during sax parsing of xml to build font object


      switch (node.name) {
        case 'xf':
          this.model = {
            numFmtId: parseInt(node.attributes.numFmtId, 10),
            fontId: parseInt(node.attributes.fontId, 10),
            fillId: parseInt(node.attributes.fillId, 10),
            borderId: parseInt(node.attributes.borderId, 10)
          };

          if (this.xfId) {
            this.model.xfId = parseInt(node.attributes.xfId, 10);
          }

          return true;

        case 'alignment':
          this.parser = this.map.alignment;
          this.parser.parseOpen(node);
          return true;

        case 'protection':
          this.parser = this.map.protection;
          this.parser.parseOpen(node);
          return true;

        default:
          return false;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.model.alignment = this.parser.model;
          this.parser = undefined;
        }

        return true;
      }

      return name !== 'xf';
    }
  }, {
    key: "tag",
    get: function get() {
      return 'xf';
    }
  }]);

  return StyleXform;
}(BaseXform);

module.exports = StyleXform;


},{"../base-xform":28,"./alignment-xform":103,"./protection-xform":110}],112:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

/* eslint-disable max-classes-per-file */
var Enums = require('../../../doc/enums');

var XmlStream = require('../../../utils/xml-stream');

var BaseXform = require('../base-xform');

var StaticXform = require('../static-xform');

var ListXform = require('../list-xform');

var FontXform = require('./font-xform');

var FillXform = require('./fill-xform');

var BorderXform = require('./border-xform');

var NumFmtXform = require('./numfmt-xform');

var StyleXform = require('./style-xform');

var DxfXform = require('./dxf-xform'); // custom numfmt ids start here


var NUMFMT_BASE = 164; // =============================================================================
// StylesXform is used to generate and parse the styles.xml file
// it manages the collections of fonts, number formats, alignments, etc

var StylesXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(StylesXform, _BaseXform);

  function StylesXform(initialise) {
    var _this;

    _classCallCheck(this, StylesXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(StylesXform).call(this));
    _this.map = {
      numFmts: new ListXform({
        tag: 'numFmts',
        count: true,
        childXform: new NumFmtXform()
      }),
      fonts: new ListXform({
        tag: 'fonts',
        count: true,
        childXform: new FontXform(),
        $: {
          'x14ac:knownFonts': 1
        }
      }),
      fills: new ListXform({
        tag: 'fills',
        count: true,
        childXform: new FillXform()
      }),
      borders: new ListXform({
        tag: 'borders',
        count: true,
        childXform: new BorderXform()
      }),
      cellStyleXfs: new ListXform({
        tag: 'cellStyleXfs',
        count: true,
        childXform: new StyleXform()
      }),
      cellXfs: new ListXform({
        tag: 'cellXfs',
        count: true,
        childXform: new StyleXform({
          xfId: true
        })
      }),
      dxfs: new ListXform({
        tag: 'dxfs',
        always: true,
        count: true,
        childXform: new DxfXform()
      }),
      // for style manager
      numFmt: new NumFmtXform(),
      font: new FontXform(),
      fill: new FillXform(),
      border: new BorderXform(),
      style: new StyleXform({
        xfId: true
      }),
      cellStyles: StylesXform.STATIC_XFORMS.cellStyles,
      tableStyles: StylesXform.STATIC_XFORMS.tableStyles,
      extLst: StylesXform.STATIC_XFORMS.extLst
    };

    if (initialise) {
      // StylesXform also acts as style manager and is used to build up styles-model during worksheet processing
      _this.init();
    }

    return _this;
  }

  _createClass(StylesXform, [{
    key: "initIndex",
    value: function initIndex() {
      this.index = {
        style: {},
        numFmt: {},
        numFmtNextId: 164,
        // start custom format ids here
        font: {},
        border: {},
        fill: {}
      };
    }
  }, {
    key: "init",
    value: function init() {
      // Prepare for Style Manager role
      this.model = {
        styles: [],
        numFmts: [],
        fonts: [],
        borders: [],
        fills: [],
        dxfs: []
      };
      this.initIndex(); // default (zero) border

      this._addBorder({}); // add default (all zero) style


      this._addStyle({
        numFmtId: 0,
        fontId: 0,
        fillId: 0,
        borderId: 0,
        xfId: 0
      }); // add default fills


      this._addFill({
        type: 'pattern',
        pattern: 'none'
      });

      this._addFill({
        type: 'pattern',
        pattern: 'gray125'
      });

      this.weakMap = new WeakMap();
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      model = model || this.model; //
      //   <fonts count="2" x14ac:knownFonts="1">

      xmlStream.openXml(XmlStream.StdDocAttributes);
      xmlStream.openNode('styleSheet', StylesXform.STYLESHEET_ATTRIBUTES);

      if (this.index) {
        // model has been built by style manager role (contains xml)
        if (model.numFmts && model.numFmts.length) {
          xmlStream.openNode('numFmts', {
            count: model.numFmts.length
          });
          model.numFmts.forEach(function (numFmtXml) {
            xmlStream.writeXml(numFmtXml);
          });
          xmlStream.closeNode();
        }

        if (!model.fonts.length) {
          // default (zero) font
          this._addFont({
            size: 11,
            color: {
              theme: 1
            },
            name: 'Calibri',
            family: 2,
            scheme: 'minor'
          });
        }

        xmlStream.openNode('fonts', {
          count: model.fonts.length,
          'x14ac:knownFonts': 1
        });
        model.fonts.forEach(function (fontXml) {
          xmlStream.writeXml(fontXml);
        });
        xmlStream.closeNode();
        xmlStream.openNode('fills', {
          count: model.fills.length
        });
        model.fills.forEach(function (fillXml) {
          xmlStream.writeXml(fillXml);
        });
        xmlStream.closeNode();
        xmlStream.openNode('borders', {
          count: model.borders.length
        });
        model.borders.forEach(function (borderXml) {
          xmlStream.writeXml(borderXml);
        });
        xmlStream.closeNode();
        this.map.cellStyleXfs.render(xmlStream, [{
          numFmtId: 0,
          fontId: 0,
          fillId: 0,
          borderId: 0,
          xfId: 0
        }]);
        xmlStream.openNode('cellXfs', {
          count: model.styles.length
        });
        model.styles.forEach(function (styleXml) {
          xmlStream.writeXml(styleXml);
        });
        xmlStream.closeNode();
      } else {
        // model is plain JSON and needs to be xformed
        this.map.numFmts.render(xmlStream, model.numFmts);
        this.map.fonts.render(xmlStream, model.fonts);
        this.map.fills.render(xmlStream, model.fills);
        this.map.borders.render(xmlStream, model.borders);
        this.map.cellStyleXfs.render(xmlStream, [{
          numFmtId: 0,
          fontId: 0,
          fillId: 0,
          borderId: 0,
          xfId: 0
        }]);
        this.map.cellXfs.render(xmlStream, model.styles);
      }

      StylesXform.STATIC_XFORMS.cellStyles.render(xmlStream);
      this.map.dxfs.render(xmlStream, model.dxfs);
      StylesXform.STATIC_XFORMS.tableStyles.render(xmlStream);
      StylesXform.STATIC_XFORMS.extLst.render(xmlStream);
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case 'styleSheet':
          this.initIndex();
          return true;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
          }

          return true;
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      var _this2 = this;

      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case 'styleSheet':
          {
            this.model = {};

            var add = function add(propName, xform) {
              if (xform.model && xform.model.length) {
                _this2.model[propName] = xform.model;
              }
            };

            add('numFmts', this.map.numFmts);
            add('fonts', this.map.fonts);
            add('fills', this.map.fills);
            add('borders', this.map.borders);
            add('styles', this.map.cellXfs);
            add('dxfs', this.map.dxfs); // index numFmts

            this.index = {
              model: [],
              numFmt: []
            };

            if (this.model.numFmts) {
              var numFmtIndex = this.index.numFmt;
              this.model.numFmts.forEach(function (numFmt) {
                numFmtIndex[numFmt.id] = numFmt.formatCode;
              });
            }

            return false;
          }

        default:
          // not quite sure how we get here!
          return true;
      }
    } // add a cell's style model to the collection
    // each style property is processed and cross-referenced, etc.
    // the styleId is returned. Note: cellType is used when numFmt not defined

  }, {
    key: "addStyleModel",
    value: function addStyleModel(model, cellType) {
      if (!model) {
        return 0;
      } // if we have no default font, add it here now


      if (!this.model.fonts.length) {
        // default (zero) font
        this._addFont({
          size: 11,
          color: {
            theme: 1
          },
          name: 'Calibri',
          family: 2,
          scheme: 'minor'
        });
      } // if we have seen this style object before, assume it has the same styleId


      if (this.weakMap && this.weakMap.has(model)) {
        return this.weakMap.get(model);
      }

      var style = {};
      cellType = cellType || Enums.ValueType.Number;

      if (model.numFmt) {
        style.numFmtId = this._addNumFmtStr(model.numFmt);
      } else {
        switch (cellType) {
          case Enums.ValueType.Number:
            style.numFmtId = this._addNumFmtStr('General');
            break;

          case Enums.ValueType.Date:
            style.numFmtId = this._addNumFmtStr('mm-dd-yy');
            break;

          default:
            break;
        }
      }

      if (model.font) {
        style.fontId = this._addFont(model.font);
      }

      if (model.border) {
        style.borderId = this._addBorder(model.border);
      }

      if (model.fill) {
        style.fillId = this._addFill(model.fill);
      }

      if (model.alignment) {
        style.alignment = model.alignment;
      }

      if (model.protection) {
        style.protection = model.protection;
      }

      var styleId = this._addStyle(style);

      if (this.weakMap) {
        this.weakMap.set(model, styleId);
      }

      return styleId;
    } // given a styleId (i.e. s="n"), get the cell's style model
    // objects are shared where possible.

  }, {
    key: "getStyleModel",
    value: function getStyleModel(id) {
      // if the style doesn't exist return null
      var style = this.model.styles[id];
      if (!style) return null; // have we built this model before?

      var model = this.index.model[id];
      if (model) return model; // build a new model

      model = this.index.model[id] = {}; // -------------------------------------------------------
      // number format

      if (style.numFmtId) {
        var numFmt = this.index.numFmt[style.numFmtId] || NumFmtXform.getDefaultFmtCode(style.numFmtId);

        if (numFmt) {
          model.numFmt = numFmt;
        }
      }

      function addStyle(name, group, styleId) {
        if (styleId || styleId === 0) {
          var part = group[styleId];

          if (part) {
            model[name] = part;
          }
        }
      }

      addStyle('font', this.model.fonts, style.fontId);
      addStyle('border', this.model.borders, style.borderId);
      addStyle('fill', this.model.fills, style.fillId); // -------------------------------------------------------
      // alignment

      if (style.alignment) {
        model.alignment = style.alignment;
      } // -------------------------------------------------------
      // protection


      if (style.protection) {
        model.protection = style.protection;
      }

      return model;
    }
  }, {
    key: "addDxfStyle",
    value: function addDxfStyle(style) {
      this.model.dxfs.push(style);
      return this.model.dxfs.length - 1;
    }
  }, {
    key: "getDxfStyle",
    value: function getDxfStyle(id) {
      return this.model.dxfs[id];
    } // =========================================================================
    // Private Interface

  }, {
    key: "_addStyle",
    value: function _addStyle(style) {
      var xml = this.map.style.toXml(style);
      var index = this.index.style[xml];

      if (index === undefined) {
        index = this.index.style[xml] = this.model.styles.length;
        this.model.styles.push(xml);
      }

      return index;
    } // =========================================================================
    // Number Formats

  }, {
    key: "_addNumFmtStr",
    value: function _addNumFmtStr(formatCode) {
      // check if default format
      var index = NumFmtXform.getDefaultFmtId(formatCode);
      if (index !== undefined) return index; // check if already in

      index = this.index.numFmt[formatCode];
      if (index !== undefined) return index;
      index = this.index.numFmt[formatCode] = NUMFMT_BASE + this.model.numFmts.length;
      var xml = this.map.numFmt.toXml({
        id: index,
        formatCode: formatCode
      });
      this.model.numFmts.push(xml);
      return index;
    } // =========================================================================
    // Fonts

  }, {
    key: "_addFont",
    value: function _addFont(font) {
      var xml = this.map.font.toXml(font);
      var index = this.index.font[xml];

      if (index === undefined) {
        index = this.index.font[xml] = this.model.fonts.length;
        this.model.fonts.push(xml);
      }

      return index;
    } // =========================================================================
    // Borders

  }, {
    key: "_addBorder",
    value: function _addBorder(border) {
      var xml = this.map.border.toXml(border);
      var index = this.index.border[xml];

      if (index === undefined) {
        index = this.index.border[xml] = this.model.borders.length;
        this.model.borders.push(xml);
      }

      return index;
    } // =========================================================================
    // Fills

  }, {
    key: "_addFill",
    value: function _addFill(fill) {
      var xml = this.map.fill.toXml(fill);
      var index = this.index.fill[xml];

      if (index === undefined) {
        index = this.index.fill[xml] = this.model.fills.length;
        this.model.fills.push(xml);
      }

      return index;
    } // =========================================================================

  }]);

  return StylesXform;
}(BaseXform);

StylesXform.STYLESHEET_ATTRIBUTES = {
  xmlns: 'http://schemas.openxmlformats.org/spreadsheetml/2006/main',
  'xmlns:mc': 'http://schemas.openxmlformats.org/markup-compatibility/2006',
  'mc:Ignorable': 'x14ac x16r2',
  'xmlns:x14ac': 'http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac',
  'xmlns:x16r2': 'http://schemas.microsoft.com/office/spreadsheetml/2015/02/main'
};
StylesXform.STATIC_XFORMS = {
  cellStyles: new StaticXform({
    tag: 'cellStyles',
    $: {
      count: 1
    },
    c: [{
      tag: 'cellStyle',
      $: {
        name: 'Normal',
        xfId: 0,
        builtinId: 0
      }
    }]
  }),
  dxfs: new StaticXform({
    tag: 'dxfs',
    $: {
      count: 0
    }
  }),
  tableStyles: new StaticXform({
    tag: 'tableStyles',
    $: {
      count: 0,
      defaultTableStyle: 'TableStyleMedium2',
      defaultPivotStyle: 'PivotStyleLight16'
    }
  }),
  extLst: new StaticXform({
    tag: 'extLst',
    c: [{
      tag: 'ext',
      $: {
        uri: '{EB79DEF2-80B8-43e5-95BD-54CBDDF9020C}',
        'xmlns:x14': 'http://schemas.microsoft.com/office/spreadsheetml/2009/9/main'
      },
      c: [{
        tag: 'x14:slicerStyles',
        $: {
          defaultSlicerStyle: 'SlicerStyleLight1'
        }
      }]
    }, {
      tag: 'ext',
      $: {
        uri: '{9260A510-F301-46a8-8635-F512D64BE5F5}',
        'xmlns:x15': 'http://schemas.microsoft.com/office/spreadsheetml/2010/11/main'
      },
      c: [{
        tag: 'x15:timelineStyles',
        $: {
          defaultTimelineStyle: 'TimeSlicerStyleLight1'
        }
      }]
    }]
  })
}; // the stylemanager mock acts like StyleManager except that it always returns 0 or {}

var StylesXformMock =
/*#__PURE__*/
function (_StylesXform) {
  _inherits(StylesXformMock, _StylesXform);

  function StylesXformMock() {
    var _this3;

    _classCallCheck(this, StylesXformMock);

    _this3 = _possibleConstructorReturn(this, _getPrototypeOf(StylesXformMock).call(this));
    _this3.model = {
      styles: [{
        numFmtId: 0,
        fontId: 0,
        fillId: 0,
        borderId: 0,
        xfId: 0
      }],
      numFmts: [],
      fonts: [{
        size: 11,
        color: {
          theme: 1
        },
        name: 'Calibri',
        family: 2,
        scheme: 'minor'
      }],
      borders: [{}],
      fills: [{
        type: 'pattern',
        pattern: 'none'
      }, {
        type: 'pattern',
        pattern: 'gray125'
      }]
    };
    return _this3;
  } // =========================================================================
  // Style Manager Interface
  // override normal behaviour - consume and dispose


  _createClass(StylesXformMock, [{
    key: "parseStream",
    value: function parseStream(stream) {
      stream.autodrain();
      return Promise.resolve();
    } // add a cell's style model to the collection
    // each style property is processed and cross-referenced, etc.
    // the styleId is returned. Note: cellType is used when numFmt not defined

  }, {
    key: "addStyleModel",
    value: function addStyleModel(model, cellType) {
      switch (cellType) {
        case Enums.ValueType.Date:
          return this.dateStyleId;

        default:
          return 0;
      }
    }
  }, {
    key: "getStyleModel",
    // given a styleId (i.e. s="n"), get the cell's style model
    // objects are shared where possible.
    value: function getStyleModel()
    /* id */
    {
      return {};
    }
  }, {
    key: "dateStyleId",
    get: function get() {
      if (!this._dateStyleId) {
        var dateStyle = {
          numFmtId: NumFmtXform.getDefaultFmtId('mm-dd-yy')
        };
        this._dateStyleId = this.model.styles.length;
        this.model.styles.push(dateStyle);
      }

      return this._dateStyleId;
    }
  }]);

  return StylesXformMock;
}(StylesXform);

StylesXform.Mock = StylesXformMock;
module.exports = StylesXform;


},{"../../../doc/enums":7,"../../../utils/xml-stream":24,"../base-xform":28,"../list-xform":58,"../static-xform":97,"./border-xform":104,"./dxf-xform":106,"./fill-xform":107,"./font-xform":108,"./numfmt-xform":109,"./style-xform":111}],113:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var UnderlineXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(UnderlineXform, _BaseXform);

  function UnderlineXform(model) {
    var _this;

    _classCallCheck(this, UnderlineXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(UnderlineXform).call(this));
    _this.model = model;
    return _this;
  }

  _createClass(UnderlineXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      model = model || this.model;

      if (model === true) {
        xmlStream.leafNode('u');
      } else {
        var attr = UnderlineXform.Attributes[model];

        if (attr) {
          xmlStream.leafNode('u', attr);
        }
      }
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === 'u') {
        this.model = node.attributes.val || true;
      }
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'u';
    }
  }]);

  return UnderlineXform;
}(BaseXform);

UnderlineXform.Attributes = {
  single: {},
  double: {
    val: 'double'
  },
  singleAccounting: {
    val: 'singleAccounting'
  },
  doubleAccounting: {
    val: 'doubleAccounting'
  }
};
module.exports = UnderlineXform;


},{"../base-xform":28}],114:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var FilterColumnXform = require('./filter-column-xform');

var AutoFilterXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(AutoFilterXform, _BaseXform);

  function AutoFilterXform() {
    var _this;

    _classCallCheck(this, AutoFilterXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(AutoFilterXform).call(this));
    _this.map = {
      filterColumn: new FilterColumnXform()
    };
    return _this;
  }

  _createClass(AutoFilterXform, [{
    key: "prepare",
    value: function prepare(model) {
      var _this2 = this;

      model.columns.forEach(function (column, index) {
        _this2.map.filterColumn.prepare(column, {
          index: index
        });
      });
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      var _this3 = this;

      xmlStream.openNode(this.tag, {
        ref: model.autoFilterRef
      });
      model.columns.forEach(function (column) {
        _this3.map.filterColumn.render(xmlStream, column);
      });
      xmlStream.closeNode();
      return true;
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      switch (node.name) {
        case this.tag:
          this.model = {
            autoFilterRef: node.attributes.ref,
            columns: []
          };
          return true;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parseOpen(node);
            return true;
          }

          throw new Error("Unexpected xml node in parseOpen: ".concat(JSON.stringify(node)));
      }
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.model.columns.push(this.parser.model);
          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case this.tag:
          return false;

        default:
          throw new Error("Unexpected xml node in parseClose: ".concat(name));
      }
    }
  }, {
    key: "tag",
    get: function get() {
      return 'autoFilter';
    }
  }]);

  return AutoFilterXform;
}(BaseXform);

module.exports = AutoFilterXform;


},{"../base-xform":28,"./filter-column-xform":115}],115:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var FilterColumnXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(FilterColumnXform, _BaseXform);

  function FilterColumnXform() {
    _classCallCheck(this, FilterColumnXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(FilterColumnXform).apply(this, arguments));
  }

  _createClass(FilterColumnXform, [{
    key: "prepare",
    value: function prepare(model, options) {
      model.colId = options.index.toString();
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.leafNode(this.tag, {
        colId: model.colId,
        hiddenButton: model.filterButton ? '0' : '1'
      });
      return true;
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === this.tag) {
        var attributes = node.attributes;
        this.model = {
          filterButton: attributes.hiddenButton === '0'
        };
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'filterColumn';
    }
  }]);

  return FilterColumnXform;
}(BaseXform);

module.exports = FilterColumnXform;


},{"../base-xform":28}],116:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var TableColumnXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(TableColumnXform, _BaseXform);

  function TableColumnXform() {
    _classCallCheck(this, TableColumnXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(TableColumnXform).apply(this, arguments));
  }

  _createClass(TableColumnXform, [{
    key: "prepare",
    value: function prepare(model, options) {
      model.id = options.index + 1;
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.leafNode(this.tag, {
        id: model.id.toString(),
        name: model.name,
        totalsRowLabel: model.totalsRowLabel,
        totalsRowFunction: model.totalsRowFunction,
        dxfId: model.dxfId
      });
      return true;
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === this.tag) {
        var attributes = node.attributes;
        this.model = {
          name: attributes.name,
          totalsRowLabel: attributes.totalsRowLabel,
          totalsRowFunction: attributes.totalsRowFunction,
          dxfId: attributes.dxfId
        };
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'tableColumn';
    }
  }]);

  return TableColumnXform;
}(BaseXform);

module.exports = TableColumnXform;


},{"../base-xform":28}],117:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var BaseXform = require('../base-xform');

var TableStyleInfoXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(TableStyleInfoXform, _BaseXform);

  function TableStyleInfoXform() {
    _classCallCheck(this, TableStyleInfoXform);

    return _possibleConstructorReturn(this, _getPrototypeOf(TableStyleInfoXform).apply(this, arguments));
  }

  _createClass(TableStyleInfoXform, [{
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.leafNode(this.tag, {
        name: model.theme ? model.theme : undefined,
        showFirstColumn: model.showFirstColumn ? '1' : '0',
        showLastColumn: model.showLastColumn ? '1' : '0',
        showRowStripes: model.showRowStripes ? '1' : '0',
        showColumnStripes: model.showColumnStripes ? '1' : '0'
      });
      return true;
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (node.name === this.tag) {
        var attributes = node.attributes;
        this.model = {
          theme: attributes.name ? attributes.name : null,
          showFirstColumn: attributes.showFirstColumn === '1',
          showLastColumn: attributes.showLastColumn === '1',
          showRowStripes: attributes.showRowStripes === '1',
          showColumnStripes: attributes.showColumnStripes === '1'
        };
        return true;
      }

      return false;
    }
  }, {
    key: "parseText",
    value: function parseText() {}
  }, {
    key: "parseClose",
    value: function parseClose() {
      return false;
    }
  }, {
    key: "tag",
    get: function get() {
      return 'tableStyleInfo';
    }
  }]);

  return TableStyleInfoXform;
}(BaseXform);

module.exports = TableStyleInfoXform;


},{"../base-xform":28}],118:[function(require,module,exports){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var XmlStream = require('../../../utils/xml-stream');

var BaseXform = require('../base-xform');

var ListXform = require('../list-xform');

var AutoFilterXform = require('./auto-filter-xform');

var TableColumnXform = require('./table-column-xform');

var TableStyleInfoXform = require('./table-style-info-xform');

var TableXform =
/*#__PURE__*/
function (_BaseXform) {
  _inherits(TableXform, _BaseXform);

  function TableXform() {
    var _this;

    _classCallCheck(this, TableXform);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(TableXform).call(this));
    _this.map = {
      autoFilter: new AutoFilterXform(),
      tableColumns: new ListXform({
        tag: 'tableColumns',
        count: true,
        empty: true,
        childXform: new TableColumnXform()
      }),
      tableStyleInfo: new TableStyleInfoXform()
    };
    return _this;
  }

  _createClass(TableXform, [{
    key: "prepare",
    value: function prepare(model, options) {
      this.map.autoFilter.prepare(model);
      this.map.tableColumns.prepare(model.columns, options);
    }
  }, {
    key: "render",
    value: function render(xmlStream, model) {
      xmlStream.openXml(XmlStream.StdDocAttributes);
      xmlStream.openNode(this.tag, _objectSpread({}, TableXform.TABLE_ATTRIBUTES, {
        id: model.id,
        name: model.name,
        displayName: model.displayName || model.name,
        ref: model.tableRef,
        totalsRowCount: model.totalsRow ? '1' : undefined,
        totalsRowShown: model.totalsRow ? undefined : '1',
        headerRowCount: model.headerRow ? '1' : '0'
      }));
      this.map.autoFilter.render(xmlStream, model);
      this.map.tableColumns.render(xmlStream, model.columns);
      this.map.tableStyleInfo.render(xmlStream, model.style);
      xmlStream.closeNode();
    }
  }, {
    key: "parseOpen",
    value: function parseOpen(node) {
      if (this.parser) {
        this.parser.parseOpen(node);
        return true;
      }

      var name = node.name,
          attributes = node.attributes;

      switch (name) {
        case this.tag:
          this.reset();
          this.model = {
            name: attributes.name,
            displayName: attributes.displayName || attributes.name,
            tableRef: attributes.ref,
            totalsRow: attributes.totalsRowCount === '1',
            headerRow: attributes.headerRowCount === '1'
          };
          break;

        default:
          this.parser = this.map[node.name];

          if (this.parser) {
            this.parser.parseOpen(node);
          }

          break;
      }

      return true;
    }
  }, {
    key: "parseText",
    value: function parseText(text) {
      if (this.parser) {
        this.parser.parseText(text);
      }
    }
  }, {
    key: "parseClose",
    value: function parseClose(name) {
      var _this2 = this;

      if (this.parser) {
        if (!this.parser.parseClose(name)) {
          this.parser = undefined;
        }

        return true;
      }

      switch (name) {
        case this.tag:
          this.model.columns = this.map.tableColumns.model;

          if (this.map.autoFilter.model) {
            this.model.autoFilterRef = this.map.autoFilter.model.autoFilterRef;
            this.map.autoFilter.model.columns.forEach(function (column, index) {
              _this2.model.columns[index].filterButton = column.filterButton;
            });
          }

          this.model.style = this.map.tableStyleInfo.model;
          return false;

        default:
          // could be some unrecognised tags
          return true;
      }
    }
  }, {
    key: "reconcile",
    value: function reconcile(model, options) {
      // fetch the dfxs from styles
      model.columns.forEach(function (column) {
        if (column.dxfId !== undefined) {
          column.style = options.styles.getDxfStyle(column.dxfId);
        }
      });
    }
  }, {
    key: "tag",
    get: function get() {
      return 'table';
    }
  }]);

  return TableXform;
}(BaseXform);

TableXform.TABLE_ATTRIBUTES = {
  'xmlns': 'http://schemas.openxmlformats.org/spreadsheetml/2006/main',
  'xmlns:mc': 'http://schemas.openxmlformats.org/markup-compatibility/2006',
  'mc:Ignorable': 'xr xr3',
  'xmlns:xr': 'http://schemas.microsoft.com/office/spreadsheetml/2014/revision',
  'xmlns:xr3': 'http://schemas.microsoft.com/office/spreadsheetml/2016/revision3' // 'xr:uid': '{00000000-000C-0000-FFFF-FFFF00000000}',

};
module.exports = TableXform;


},{"../../../utils/xml-stream":24,"../base-xform":28,"../list-xform":58,"./auto-filter-xform":114,"./table-column-xform":116,"./table-style-info-xform":117}],119:[function(require,module,exports){
(function (Buffer){
"use strict";

function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }

function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var fs = require('fs');

var ZipStream = require('../utils/zip-stream');

var StreamBuf = require('../utils/stream-buf');

var utils = require('../utils/utils');

var XmlStream = require('../utils/xml-stream');

var StylesXform = require('./xform/style/styles-xform');

var CoreXform = require('./xform/core/core-xform');

var SharedStringsXform = require('./xform/strings/shared-strings-xform');

var RelationshipsXform = require('./xform/core/relationships-xform');

var ContentTypesXform = require('./xform/core/content-types-xform');

var AppXform = require('./xform/core/app-xform');

var WorkbookXform = require('./xform/book/workbook-xform');

var WorksheetXform = require('./xform/sheet/worksheet-xform');

var DrawingXform = require('./xform/drawing/drawing-xform');

var TableXform = require('./xform/table/table-xform');

var CommentsXform = require('./xform/comment/comments-xform');

var VmlNotesXform = require('./xform/comment/vml-notes-xform');

var theme1Xml = require('./xml/theme1.js');

function fsReadFileAsync(filename, options) {
  return new Promise(function (resolve, reject) {
    fs.readFile(filename, options, function (error, data) {
      if (error) {
        reject(error);
      } else {
        resolve(data);
      }
    });
  });
}

var XLSX =
/*#__PURE__*/
function () {
  function XLSX(workbook) {
    _classCallCheck(this, XLSX);

    this.workbook = workbook;
  } // ===============================================================================
  // Workbook
  // =========================================================================
  // Read


  _createClass(XLSX, [{
    key: "readFile",
    value: function () {
      var _readFile = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee(filename, options) {
        var stream, workbook;
        return regeneratorRuntime.wrap(function _callee$(_context) {
          while (1) {
            switch (_context.prev = _context.next) {
              case 0:
                _context.next = 2;
                return utils.fs.exists(filename);

              case 2:
                if (_context.sent) {
                  _context.next = 4;
                  break;
                }

                throw new Error("File not found: ".concat(filename));

              case 4:
                stream = fs.createReadStream(filename);
                _context.prev = 5;
                _context.next = 8;
                return this.read(stream, options);

              case 8:
                workbook = _context.sent;
                stream.close();
                return _context.abrupt("return", workbook);

              case 13:
                _context.prev = 13;
                _context.t0 = _context["catch"](5);
                stream.close();
                throw _context.t0;

              case 17:
              case "end":
                return _context.stop();
            }
          }
        }, _callee, this, [[5, 13]]);
      }));

      function readFile(_x, _x2) {
        return _readFile.apply(this, arguments);
      }

      return readFile;
    }()
  }, {
    key: "parseRels",
    value: function parseRels(stream) {
      var xform = new RelationshipsXform();
      return xform.parseStream(stream);
    }
  }, {
    key: "parseWorkbook",
    value: function parseWorkbook(stream) {
      var xform = new WorkbookXform();
      return xform.parseStream(stream);
    }
  }, {
    key: "parseSharedStrings",
    value: function parseSharedStrings(stream) {
      var xform = new SharedStringsXform();
      return xform.parseStream(stream);
    }
  }, {
    key: "reconcile",
    value: function reconcile(model, options) {
      var workbookXform = new WorkbookXform();
      var worksheetXform = new WorksheetXform(options);
      var drawingXform = new DrawingXform();
      var tableXform = new TableXform();
      workbookXform.reconcile(model); // reconcile drawings with their rels

      var drawingOptions = {
        media: model.media,
        mediaIndex: model.mediaIndex
      };
      Object.keys(model.drawings).forEach(function (name) {
        var drawing = model.drawings[name];
        var drawingRel = model.drawingRels[name];

        if (drawingRel) {
          drawingOptions.rels = drawingRel.reduce(function (o, rel) {
            o[rel.Id] = rel;
            return o;
          }, {});
          drawingXform.reconcile(drawing, drawingOptions);
        }
      }); // reconcile tables with the default styles

      var tableOptions = {
        styles: model.styles
      };
      Object.values(model.tables).forEach(function (table) {
        tableXform.reconcile(table, tableOptions);
      });
      var sheetOptions = {
        styles: model.styles,
        sharedStrings: model.sharedStrings,
        media: model.media,
        mediaIndex: model.mediaIndex,
        date1904: model.properties && model.properties.date1904,
        drawings: model.drawings,
        comments: model.comments,
        tables: model.tables
      };
      model.worksheets.forEach(function (worksheet) {
        worksheet.relationships = model.worksheetRels[worksheet.sheetNo];
        worksheetXform.reconcile(worksheet, sheetOptions);
      }); // delete unnecessary parts

      delete model.worksheetHash;
      delete model.worksheetRels;
      delete model.globalRels;
      delete model.sharedStrings;
      delete model.workbookRels;
      delete model.sheetDefs;
      delete model.styles;
      delete model.mediaIndex;
      delete model.drawings;
      delete model.drawingRels;
    }
  }, {
    key: "_processWorksheetEntry",
    value: function () {
      var _processWorksheetEntry2 = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee2(entry, model, sheetNo, options) {
        var xform, worksheet;
        return regeneratorRuntime.wrap(function _callee2$(_context2) {
          while (1) {
            switch (_context2.prev = _context2.next) {
              case 0:
                xform = new WorksheetXform(options);
                _context2.next = 3;
                return xform.parseStream(entry);

              case 3:
                worksheet = _context2.sent;
                worksheet.sheetNo = sheetNo;
                model.worksheetHash[entry.path] = worksheet;
                model.worksheets.push(worksheet);

              case 7:
              case "end":
                return _context2.stop();
            }
          }
        }, _callee2);
      }));

      function _processWorksheetEntry(_x3, _x4, _x5, _x6) {
        return _processWorksheetEntry2.apply(this, arguments);
      }

      return _processWorksheetEntry;
    }()
  }, {
    key: "_processCommentEntry",
    value: function () {
      var _processCommentEntry2 = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee3(entry, model, name) {
        var xform, comments;
        return regeneratorRuntime.wrap(function _callee3$(_context3) {
          while (1) {
            switch (_context3.prev = _context3.next) {
              case 0:
                xform = new CommentsXform();
                _context3.next = 3;
                return xform.parseStream(entry);

              case 3:
                comments = _context3.sent;
                model.comments["../".concat(name, ".xml")] = comments;

              case 5:
              case "end":
                return _context3.stop();
            }
          }
        }, _callee3);
      }));

      function _processCommentEntry(_x7, _x8, _x9) {
        return _processCommentEntry2.apply(this, arguments);
      }

      return _processCommentEntry;
    }()
  }, {
    key: "_processTableEntry",
    value: function () {
      var _processTableEntry2 = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee4(entry, model, name) {
        var xform, table;
        return regeneratorRuntime.wrap(function _callee4$(_context4) {
          while (1) {
            switch (_context4.prev = _context4.next) {
              case 0:
                xform = new TableXform();
                _context4.next = 3;
                return xform.parseStream(entry);

              case 3:
                table = _context4.sent;
                model.tables["../tables/".concat(name, ".xml")] = table;

              case 5:
              case "end":
                return _context4.stop();
            }
          }
        }, _callee4);
      }));

      function _processTableEntry(_x10, _x11, _x12) {
        return _processTableEntry2.apply(this, arguments);
      }

      return _processTableEntry;
    }()
  }, {
    key: "_processWorksheetRelsEntry",
    value: function () {
      var _processWorksheetRelsEntry2 = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee5(entry, model, sheetNo) {
        var xform, relationships;
        return regeneratorRuntime.wrap(function _callee5$(_context5) {
          while (1) {
            switch (_context5.prev = _context5.next) {
              case 0:
                xform = new RelationshipsXform();
                _context5.next = 3;
                return xform.parseStream(entry);

              case 3:
                relationships = _context5.sent;
                model.worksheetRels[sheetNo] = relationships;

              case 5:
              case "end":
                return _context5.stop();
            }
          }
        }, _callee5);
      }));

      function _processWorksheetRelsEntry(_x13, _x14, _x15) {
        return _processWorksheetRelsEntry2.apply(this, arguments);
      }

      return _processWorksheetRelsEntry;
    }()
  }, {
    key: "_processMediaEntry",
    value: function () {
      var _processMediaEntry2 = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee6(entry, model, filename) {
        var lastDot, extension, name;
        return regeneratorRuntime.wrap(function _callee6$(_context6) {
          while (1) {
            switch (_context6.prev = _context6.next) {
              case 0:
                lastDot = filename.lastIndexOf('.'); // if we can't determine extension, ignore it

                if (!(lastDot >= 1)) {
                  _context6.next = 6;
                  break;
                }

                extension = filename.substr(lastDot + 1);
                name = filename.substr(0, lastDot);
                _context6.next = 6;
                return new Promise(function (resolve, reject) {
                  var streamBuf = new StreamBuf();
                  streamBuf.on('finish', function () {
                    model.mediaIndex[filename] = model.media.length;
                    model.mediaIndex[name] = model.media.length;
                    var medium = {
                      type: 'image',
                      name: name,
                      extension: extension,
                      buffer: streamBuf.toBuffer()
                    };
                    model.media.push(medium);
                    resolve();
                  });
                  entry.on('error', function (error) {
                    reject(error);
                  });
                  entry.pipe(streamBuf);
                });

              case 6:
              case "end":
                return _context6.stop();
            }
          }
        }, _callee6);
      }));

      function _processMediaEntry(_x16, _x17, _x18) {
        return _processMediaEntry2.apply(this, arguments);
      }

      return _processMediaEntry;
    }()
  }, {
    key: "_processDrawingEntry",
    value: function () {
      var _processDrawingEntry2 = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee7(entry, model, name) {
        var xform, drawing;
        return regeneratorRuntime.wrap(function _callee7$(_context7) {
          while (1) {
            switch (_context7.prev = _context7.next) {
              case 0:
                xform = new DrawingXform();
                _context7.next = 3;
                return xform.parseStream(entry);

              case 3:
                drawing = _context7.sent;
                model.drawings[name] = drawing;

              case 5:
              case "end":
                return _context7.stop();
            }
          }
        }, _callee7);
      }));

      function _processDrawingEntry(_x19, _x20, _x21) {
        return _processDrawingEntry2.apply(this, arguments);
      }

      return _processDrawingEntry;
    }()
  }, {
    key: "_processDrawingRelsEntry",
    value: function () {
      var _processDrawingRelsEntry2 = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee8(entry, model, name) {
        var xform, relationships;
        return regeneratorRuntime.wrap(function _callee8$(_context8) {
          while (1) {
            switch (_context8.prev = _context8.next) {
              case 0:
                xform = new RelationshipsXform();
                _context8.next = 3;
                return xform.parseStream(entry);

              case 3:
                relationships = _context8.sent;
                model.drawingRels[name] = relationships;

              case 5:
              case "end":
                return _context8.stop();
            }
          }
        }, _callee8);
      }));

      function _processDrawingRelsEntry(_x22, _x23, _x24) {
        return _processDrawingRelsEntry2.apply(this, arguments);
      }

      return _processDrawingRelsEntry;
    }()
  }, {
    key: "_processThemeEntry",
    value: function () {
      var _processThemeEntry2 = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee9(entry, model, name) {
        return regeneratorRuntime.wrap(function _callee9$(_context9) {
          while (1) {
            switch (_context9.prev = _context9.next) {
              case 0:
                _context9.next = 2;
                return new Promise(function (resolve, reject) {
                  // TODO: stream entry into buffer and store the xml in the model.themes[]
                  var stream = new StreamBuf();
                  entry.on('error', reject);
                  stream.on('error', reject);
                  stream.on('finish', function () {
                    model.themes[name] = stream.read().toString();
                    resolve();
                  });
                  entry.pipe(stream);
                });

              case 2:
              case "end":
                return _context9.stop();
            }
          }
        }, _callee9);
      }));

      function _processThemeEntry(_x25, _x26, _x27) {
        return _processThemeEntry2.apply(this, arguments);
      }

      return _processThemeEntry;
    }()
  }, {
    key: "createInputStream",
    value: function createInputStream(options) {
      var _this = this;

      var model = {
        worksheets: [],
        worksheetHash: {},
        worksheetRels: [],
        themes: {},
        media: [],
        mediaIndex: {},
        drawings: {},
        drawingRels: {},
        comments: {},
        tables: {}
      }; // we have to be prepared to read the zip entries in whatever order they arrive

      var promises = [];
      var stream = new ZipStream.ZipReader({
        getEntryType: function getEntryType(path) {
          return path.match(/xl\/media\//) ? 'nodebuffer' : 'string';
        }
      });
      stream.on('entry', function (entry) {
        promises.push(_asyncToGenerator(
        /*#__PURE__*/
        regeneratorRuntime.mark(function _callee10() {
          var entryPath, workbook, appXform, appProperties, coreXform, coreProperties, match;
          return regeneratorRuntime.wrap(function _callee10$(_context10) {
            while (1) {
              switch (_context10.prev = _context10.next) {
                case 0:
                  _context10.prev = 0;
                  entryPath = entry.path;

                  if (entryPath[0] === '/') {
                    entryPath = entryPath.substr(1);
                  }

                  _context10.t0 = entryPath;
                  _context10.next = _context10.t0 === '_rels/.rels' ? 6 : _context10.t0 === 'xl/workbook.xml' ? 10 : _context10.t0 === 'xl/_rels/workbook.xml.rels' ? 19 : _context10.t0 === 'xl/sharedStrings.xml' ? 23 : _context10.t0 === 'xl/styles.xml' ? 27 : _context10.t0 === 'docProps/app.xml' ? 31 : _context10.t0 === 'docProps/core.xml' ? 38 : 44;
                  break;

                case 6:
                  _context10.next = 8;
                  return _this.parseRels(entry);

                case 8:
                  model.globalRels = _context10.sent;
                  return _context10.abrupt("break", 85);

                case 10:
                  _context10.next = 12;
                  return _this.parseWorkbook(entry);

                case 12:
                  workbook = _context10.sent;
                  model.sheets = workbook.sheets;
                  model.definedNames = workbook.definedNames;
                  model.views = workbook.views;
                  model.properties = workbook.properties;
                  model.calcProperties = workbook.calcProperties;
                  return _context10.abrupt("break", 85);

                case 19:
                  _context10.next = 21;
                  return _this.parseRels(entry);

                case 21:
                  model.workbookRels = _context10.sent;
                  return _context10.abrupt("break", 85);

                case 23:
                  model.sharedStrings = new SharedStringsXform();
                  _context10.next = 26;
                  return model.sharedStrings.parseStream(entry);

                case 26:
                  return _context10.abrupt("break", 85);

                case 27:
                  model.styles = new StylesXform();
                  _context10.next = 30;
                  return model.styles.parseStream(entry);

                case 30:
                  return _context10.abrupt("break", 85);

                case 31:
                  appXform = new AppXform();
                  _context10.next = 34;
                  return appXform.parseStream(entry);

                case 34:
                  appProperties = _context10.sent;
                  model.company = appProperties.company;
                  model.manager = appProperties.manager;
                  return _context10.abrupt("break", 85);

                case 38:
                  coreXform = new CoreXform();
                  _context10.next = 41;
                  return coreXform.parseStream(entry);

                case 41:
                  coreProperties = _context10.sent;
                  Object.assign(model, coreProperties);
                  return _context10.abrupt("break", 85);

                case 44:
                  match = entry.path.match(/xl\/worksheets\/sheet(\d+)[.]xml/);

                  if (!match) {
                    _context10.next = 49;
                    break;
                  }

                  _context10.next = 48;
                  return _this._processWorksheetEntry(entry, model, match[1], options);

                case 48:
                  return _context10.abrupt("break", 85);

                case 49:
                  match = entry.path.match(/xl\/worksheets\/_rels\/sheet(\d+)[.]xml.rels/);

                  if (!match) {
                    _context10.next = 54;
                    break;
                  }

                  _context10.next = 53;
                  return _this._processWorksheetRelsEntry(entry, model, match[1]);

                case 53:
                  return _context10.abrupt("break", 85);

                case 54:
                  match = entry.path.match(/xl\/theme\/([a-zA-Z0-9]+)[.]xml/);

                  if (!match) {
                    _context10.next = 59;
                    break;
                  }

                  _context10.next = 58;
                  return _this._processThemeEntry(entry, model, match[1]);

                case 58:
                  return _context10.abrupt("break", 85);

                case 59:
                  match = entry.path.match(/xl\/media\/([a-zA-Z0-9]+[.][a-zA-Z0-9]{3,4})$/);

                  if (!match) {
                    _context10.next = 64;
                    break;
                  }

                  _context10.next = 63;
                  return _this._processMediaEntry(entry, model, match[1]);

                case 63:
                  return _context10.abrupt("break", 85);

                case 64:
                  match = entry.path.match(/xl\/drawings\/([a-zA-Z0-9]+)[.]xml/);

                  if (!match) {
                    _context10.next = 69;
                    break;
                  }

                  _context10.next = 68;
                  return _this._processDrawingEntry(entry, model, match[1]);

                case 68:
                  return _context10.abrupt("break", 85);

                case 69:
                  match = entry.path.match(/xl\/(comments\d+)[.]xml/);

                  if (!match) {
                    _context10.next = 74;
                    break;
                  }

                  _context10.next = 73;
                  return _this._processCommentEntry(entry, model, match[1]);

                case 73:
                  return _context10.abrupt("break", 85);

                case 74:
                  match = entry.path.match(/xl\/tables\/(table\d+)[.]xml/);

                  if (!match) {
                    _context10.next = 79;
                    break;
                  }

                  _context10.next = 78;
                  return _this._processTableEntry(entry, model, match[1]);

                case 78:
                  return _context10.abrupt("break", 85);

                case 79:
                  match = entry.path.match(/xl\/drawings\/_rels\/([a-zA-Z0-9]+)[.]xml[.]rels/);

                  if (!match) {
                    _context10.next = 84;
                    break;
                  }

                  _context10.next = 83;
                  return _this._processDrawingRelsEntry(entry, model, match[1]);

                case 83:
                  return _context10.abrupt("break", 85);

                case 84:
                  entry.autodrain();

                case 85:
                  _context10.next = 91;
                  break;

                case 87:
                  _context10.prev = 87;
                  _context10.t1 = _context10["catch"](0);
                  stream.destroy(_context10.t1);
                  throw _context10.t1;

                case 91:
                case "end":
                  return _context10.stop();
              }
            }
          }, _callee10, null, [[0, 87]]);
        }))());
      });
      stream.on('finished',
      /*#__PURE__*/
      _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee11() {
        return regeneratorRuntime.wrap(function _callee11$(_context11) {
          while (1) {
            switch (_context11.prev = _context11.next) {
              case 0:
                _context11.prev = 0;
                _context11.next = 3;
                return Promise.all(promises);

              case 3:
                _this.reconcile(model, options); // apply model


                _this.workbook.model = model;
                stream.emit('done');
                _context11.next = 11;
                break;

              case 8:
                _context11.prev = 8;
                _context11.t0 = _context11["catch"](0);
                stream.emit('error', _context11.t0);

              case 11:
              case "end":
                return _context11.stop();
            }
          }
        }, _callee11, null, [[0, 8]]);
      })));
      return stream;
    }
  }, {
    key: "read",
    value: function read(stream, options) {
      var _this2 = this;

      return new Promise(function (resolve, reject) {
        options = options || {};

        var zipStream = _this2.createInputStream(options);

        zipStream.on('done', function () {
          resolve(_this2.workbook);
        }).on('error', function (error) {
          reject(error);
        });
        stream.pipe(zipStream);
      });
    }
  }, {
    key: "load",
    value: function load(data, options) {
      var _this3 = this;

      if (options === undefined) {
        options = {};
      }

      var zipStream = this.createInputStream();
      return new Promise(function (resolve, reject) {
        zipStream.on('done', function () {
          resolve(_this3.workbook);
        }).on('error', function (error) {
          reject(error);
        });

        if (options.base64) {
          var buffer = Buffer.from(data.toString(), 'base64');
          zipStream.write(buffer);
        } else {
          zipStream.write(data);
        }

        zipStream.end();
      });
    } // =========================================================================
    // Write

  }, {
    key: "addMedia",
    value: function () {
      var _addMedia = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee13(zip, model) {
        return regeneratorRuntime.wrap(function _callee13$(_context13) {
          while (1) {
            switch (_context13.prev = _context13.next) {
              case 0:
                _context13.next = 2;
                return Promise.all(model.media.map(
                /*#__PURE__*/
                function () {
                  var _ref3 = _asyncToGenerator(
                  /*#__PURE__*/
                  regeneratorRuntime.mark(function _callee12(medium) {
                    var filename, data, dataimg64, content;
                    return regeneratorRuntime.wrap(function _callee12$(_context12) {
                      while (1) {
                        switch (_context12.prev = _context12.next) {
                          case 0:
                            if (!(medium.type === 'image')) {
                              _context12.next = 13;
                              break;
                            }

                            filename = "xl/media/".concat(medium.name, ".").concat(medium.extension);

                            if (!medium.filename) {
                              _context12.next = 7;
                              break;
                            }

                            _context12.next = 5;
                            return fsReadFileAsync(medium.filename);

                          case 5:
                            data = _context12.sent;
                            return _context12.abrupt("return", zip.append(data, {
                              name: filename
                            }));

                          case 7:
                            if (!medium.buffer) {
                              _context12.next = 9;
                              break;
                            }

                            return _context12.abrupt("return", zip.append(medium.buffer, {
                              name: filename
                            }));

                          case 9:
                            if (!medium.base64) {
                              _context12.next = 13;
                              break;
                            }

                            dataimg64 = medium.base64;
                            content = dataimg64.substring(dataimg64.indexOf(',') + 1);
                            return _context12.abrupt("return", zip.append(content, {
                              name: filename,
                              base64: true
                            }));

                          case 13:
                            throw new Error('Unsupported media');

                          case 14:
                          case "end":
                            return _context12.stop();
                        }
                      }
                    }, _callee12);
                  }));

                  return function (_x30) {
                    return _ref3.apply(this, arguments);
                  };
                }()));

              case 2:
              case "end":
                return _context13.stop();
            }
          }
        }, _callee13);
      }));

      function addMedia(_x28, _x29) {
        return _addMedia.apply(this, arguments);
      }

      return addMedia;
    }()
  }, {
    key: "addDrawings",
    value: function addDrawings(zip, model) {
      var drawingXform = new DrawingXform();
      var relsXform = new RelationshipsXform();
      model.worksheets.forEach(function (worksheet) {
        var drawing = worksheet.drawing;

        if (drawing) {
          drawingXform.prepare(drawing, {});
          var xml = drawingXform.toXml(drawing);
          zip.append(xml, {
            name: "xl/drawings/".concat(drawing.name, ".xml")
          });
          xml = relsXform.toXml(drawing.rels);
          zip.append(xml, {
            name: "xl/drawings/_rels/".concat(drawing.name, ".xml.rels")
          });
        }
      });
    }
  }, {
    key: "addTables",
    value: function addTables(zip, model) {
      var tableXform = new TableXform();
      model.worksheets.forEach(function (worksheet) {
        var tables = worksheet.tables;
        tables.forEach(function (table) {
          tableXform.prepare(table, {});
          var tableXml = tableXform.toXml(table);
          zip.append(tableXml, {
            name: "xl/tables/".concat(table.target)
          });
        });
      });
    }
  }, {
    key: "addContentTypes",
    value: function () {
      var _addContentTypes = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee14(zip, model) {
        var xform, xml;
        return regeneratorRuntime.wrap(function _callee14$(_context14) {
          while (1) {
            switch (_context14.prev = _context14.next) {
              case 0:
                xform = new ContentTypesXform();
                xml = xform.toXml(model);
                zip.append(xml, {
                  name: '[Content_Types].xml'
                });

              case 3:
              case "end":
                return _context14.stop();
            }
          }
        }, _callee14);
      }));

      function addContentTypes(_x31, _x32) {
        return _addContentTypes.apply(this, arguments);
      }

      return addContentTypes;
    }()
  }, {
    key: "addApp",
    value: function () {
      var _addApp = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee15(zip, model) {
        var xform, xml;
        return regeneratorRuntime.wrap(function _callee15$(_context15) {
          while (1) {
            switch (_context15.prev = _context15.next) {
              case 0:
                xform = new AppXform();
                xml = xform.toXml(model);
                zip.append(xml, {
                  name: 'docProps/app.xml'
                });

              case 3:
              case "end":
                return _context15.stop();
            }
          }
        }, _callee15);
      }));

      function addApp(_x33, _x34) {
        return _addApp.apply(this, arguments);
      }

      return addApp;
    }()
  }, {
    key: "addCore",
    value: function () {
      var _addCore = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee16(zip, model) {
        var coreXform;
        return regeneratorRuntime.wrap(function _callee16$(_context16) {
          while (1) {
            switch (_context16.prev = _context16.next) {
              case 0:
                coreXform = new CoreXform();
                zip.append(coreXform.toXml(model), {
                  name: 'docProps/core.xml'
                });

              case 2:
              case "end":
                return _context16.stop();
            }
          }
        }, _callee16);
      }));

      function addCore(_x35, _x36) {
        return _addCore.apply(this, arguments);
      }

      return addCore;
    }()
  }, {
    key: "addThemes",
    value: function () {
      var _addThemes = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee17(zip, model) {
        var themes;
        return regeneratorRuntime.wrap(function _callee17$(_context17) {
          while (1) {
            switch (_context17.prev = _context17.next) {
              case 0:
                themes = model.themes || {
                  theme1: theme1Xml
                };
                Object.keys(themes).forEach(function (name) {
                  var xml = themes[name];
                  var path = "xl/theme/".concat(name, ".xml");
                  zip.append(xml, {
                    name: path
                  });
                });

              case 2:
              case "end":
                return _context17.stop();
            }
          }
        }, _callee17);
      }));

      function addThemes(_x37, _x38) {
        return _addThemes.apply(this, arguments);
      }

      return addThemes;
    }()
  }, {
    key: "addOfficeRels",
    value: function () {
      var _addOfficeRels = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee18(zip) {
        var xform, xml;
        return regeneratorRuntime.wrap(function _callee18$(_context18) {
          while (1) {
            switch (_context18.prev = _context18.next) {
              case 0:
                xform = new RelationshipsXform();
                xml = xform.toXml([{
                  Id: 'rId1',
                  Type: XLSX.RelType.OfficeDocument,
                  Target: 'xl/workbook.xml'
                }, {
                  Id: 'rId2',
                  Type: XLSX.RelType.CoreProperties,
                  Target: 'docProps/core.xml'
                }, {
                  Id: 'rId3',
                  Type: XLSX.RelType.ExtenderProperties,
                  Target: 'docProps/app.xml'
                }]);
                zip.append(xml, {
                  name: '_rels/.rels'
                });

              case 3:
              case "end":
                return _context18.stop();
            }
          }
        }, _callee18);
      }));

      function addOfficeRels(_x39) {
        return _addOfficeRels.apply(this, arguments);
      }

      return addOfficeRels;
    }()
  }, {
    key: "addWorkbookRels",
    value: function () {
      var _addWorkbookRels = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee19(zip, model) {
        var count, relationships, xform, xml;
        return regeneratorRuntime.wrap(function _callee19$(_context19) {
          while (1) {
            switch (_context19.prev = _context19.next) {
              case 0:
                count = 1;
                relationships = [{
                  Id: "rId".concat(count++),
                  Type: XLSX.RelType.Styles,
                  Target: 'styles.xml'
                }, {
                  Id: "rId".concat(count++),
                  Type: XLSX.RelType.Theme,
                  Target: 'theme/theme1.xml'
                }];

                if (model.sharedStrings.count) {
                  relationships.push({
                    Id: "rId".concat(count++),
                    Type: XLSX.RelType.SharedStrings,
                    Target: 'sharedStrings.xml'
                  });
                }

                model.worksheets.forEach(function (worksheet) {
                  worksheet.rId = "rId".concat(count++);
                  relationships.push({
                    Id: worksheet.rId,
                    Type: XLSX.RelType.Worksheet,
                    Target: "worksheets/sheet".concat(worksheet.id, ".xml")
                  });
                });
                xform = new RelationshipsXform();
                xml = xform.toXml(relationships);
                zip.append(xml, {
                  name: 'xl/_rels/workbook.xml.rels'
                });

              case 7:
              case "end":
                return _context19.stop();
            }
          }
        }, _callee19);
      }));

      function addWorkbookRels(_x40, _x41) {
        return _addWorkbookRels.apply(this, arguments);
      }

      return addWorkbookRels;
    }()
  }, {
    key: "addSharedStrings",
    value: function () {
      var _addSharedStrings = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee20(zip, model) {
        return regeneratorRuntime.wrap(function _callee20$(_context20) {
          while (1) {
            switch (_context20.prev = _context20.next) {
              case 0:
                if (model.sharedStrings && model.sharedStrings.count) {
                  zip.append(model.sharedStrings.xml, {
                    name: 'xl/sharedStrings.xml'
                  });
                }

              case 1:
              case "end":
                return _context20.stop();
            }
          }
        }, _callee20);
      }));

      function addSharedStrings(_x42, _x43) {
        return _addSharedStrings.apply(this, arguments);
      }

      return addSharedStrings;
    }()
  }, {
    key: "addStyles",
    value: function () {
      var _addStyles = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee21(zip, model) {
        var xml;
        return regeneratorRuntime.wrap(function _callee21$(_context21) {
          while (1) {
            switch (_context21.prev = _context21.next) {
              case 0:
                xml = model.styles.xml;

                if (xml) {
                  zip.append(xml, {
                    name: 'xl/styles.xml'
                  });
                }

              case 2:
              case "end":
                return _context21.stop();
            }
          }
        }, _callee21);
      }));

      function addStyles(_x44, _x45) {
        return _addStyles.apply(this, arguments);
      }

      return addStyles;
    }()
  }, {
    key: "addWorkbook",
    value: function () {
      var _addWorkbook = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee22(zip, model) {
        var xform;
        return regeneratorRuntime.wrap(function _callee22$(_context22) {
          while (1) {
            switch (_context22.prev = _context22.next) {
              case 0:
                xform = new WorkbookXform();
                zip.append(xform.toXml(model), {
                  name: 'xl/workbook.xml'
                });

              case 2:
              case "end":
                return _context22.stop();
            }
          }
        }, _callee22);
      }));

      function addWorkbook(_x46, _x47) {
        return _addWorkbook.apply(this, arguments);
      }

      return addWorkbook;
    }()
  }, {
    key: "addWorksheets",
    value: function () {
      var _addWorksheets = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee23(zip, model) {
        var worksheetXform, relationshipsXform, commentsXform, vmlNotesXform;
        return regeneratorRuntime.wrap(function _callee23$(_context23) {
          while (1) {
            switch (_context23.prev = _context23.next) {
              case 0:
                // preparation phase
                worksheetXform = new WorksheetXform();
                relationshipsXform = new RelationshipsXform();
                commentsXform = new CommentsXform();
                vmlNotesXform = new VmlNotesXform(); // write sheets

                model.worksheets.forEach(function (worksheet) {
                  var xmlStream = new XmlStream();
                  worksheetXform.render(xmlStream, worksheet);
                  zip.append(xmlStream.xml, {
                    name: "xl/worksheets/sheet".concat(worksheet.id, ".xml")
                  });

                  if (worksheet.rels && worksheet.rels.length) {
                    xmlStream = new XmlStream();
                    relationshipsXform.render(xmlStream, worksheet.rels);
                    zip.append(xmlStream.xml, {
                      name: "xl/worksheets/_rels/sheet".concat(worksheet.id, ".xml.rels")
                    });
                  }

                  if (worksheet.comments.length > 0) {
                    xmlStream = new XmlStream();
                    commentsXform.render(xmlStream, worksheet);
                    zip.append(xmlStream.xml, {
                      name: "xl/comments".concat(worksheet.id, ".xml")
                    });
                    xmlStream = new XmlStream();
                    vmlNotesXform.render(xmlStream, worksheet);
                    zip.append(xmlStream.xml, {
                      name: "xl/drawings/vmlDrawing".concat(worksheet.id, ".vml")
                    });
                  }
                });

              case 5:
              case "end":
                return _context23.stop();
            }
          }
        }, _callee23);
      }));

      function addWorksheets(_x48, _x49) {
        return _addWorksheets.apply(this, arguments);
      }

      return addWorksheets;
    }()
  }, {
    key: "_finalize",
    value: function _finalize(zip) {
      var _this4 = this;

      return new Promise(function (resolve, reject) {
        zip.on('finish', function () {
          resolve(_this4);
        });
        zip.on('error', reject);
        zip.finalize();
      });
    }
  }, {
    key: "prepareModel",
    value: function prepareModel(model, options) {
      // ensure following properties have sane values
      model.creator = model.creator || 'ExcelJS';
      model.lastModifiedBy = model.lastModifiedBy || 'ExcelJS';
      model.created = model.created || new Date();
      model.modified = model.modified || new Date();
      model.useSharedStrings = options.useSharedStrings !== undefined ? options.useSharedStrings : true;
      model.useStyles = options.useStyles !== undefined ? options.useStyles : true; // Manage the shared strings

      model.sharedStrings = new SharedStringsXform(); // add a style manager to handle cell formats, fonts, etc.

      model.styles = model.useStyles ? new StylesXform(true) : new StylesXform.Mock(); // prepare all of the things before the render

      var workbookXform = new WorkbookXform();
      var worksheetXform = new WorksheetXform();
      workbookXform.prepare(model);
      var worksheetOptions = {
        sharedStrings: model.sharedStrings,
        styles: model.styles,
        date1904: model.properties.date1904,
        drawingsCount: 0,
        media: model.media
      };
      worksheetOptions.drawings = model.drawings = [];
      worksheetOptions.commentRefs = model.commentRefs = [];
      var tableCount = 0;
      model.tables = [];
      model.worksheets.forEach(function (worksheet) {
        // assign unique filenames to tables
        worksheet.tables.forEach(function (table) {
          tableCount++;
          table.target = "table".concat(tableCount, ".xml");
          table.id = tableCount;
          model.tables.push(table);
        });
        worksheetXform.prepare(worksheet, worksheetOptions);
      }); // TODO: workbook drawing list
    }
  }, {
    key: "write",
    value: function () {
      var _write = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee24(stream, options) {
        var model, zip;
        return regeneratorRuntime.wrap(function _callee24$(_context24) {
          while (1) {
            switch (_context24.prev = _context24.next) {
              case 0:
                options = options || {};
                model = this.workbook.model;
                zip = new ZipStream.ZipWriter(options.zip);
                zip.pipe(stream);
                this.prepareModel(model, options); // render

                _context24.next = 7;
                return this.addContentTypes(zip, model);

              case 7:
                _context24.next = 9;
                return this.addOfficeRels(zip, model);

              case 9:
                _context24.next = 11;
                return this.addWorkbookRels(zip, model);

              case 11:
                _context24.next = 13;
                return this.addWorksheets(zip, model);

              case 13:
                _context24.next = 15;
                return this.addSharedStrings(zip, model);

              case 15:
                _context24.next = 17;
                return this.addDrawings(zip, model);

              case 17:
                _context24.next = 19;
                return this.addTables(zip, model);

              case 19:
                _context24.next = 21;
                return Promise.all([this.addThemes(zip, model), this.addStyles(zip, model)]);

              case 21:
                _context24.next = 23;
                return this.addMedia(zip, model);

              case 23:
                _context24.next = 25;
                return Promise.all([this.addApp(zip, model), this.addCore(zip, model)]);

              case 25:
                _context24.next = 27;
                return this.addWorkbook(zip, model);

              case 27:
                return _context24.abrupt("return", this._finalize(zip));

              case 28:
              case "end":
                return _context24.stop();
            }
          }
        }, _callee24, this);
      }));

      function write(_x50, _x51) {
        return _write.apply(this, arguments);
      }

      return write;
    }()
  }, {
    key: "writeFile",
    value: function writeFile(filename, options) {
      var _this5 = this;

      var stream = fs.createWriteStream(filename);
      return new Promise(function (resolve, reject) {
        stream.on('finish', function () {
          resolve();
        });
        stream.on('error', function (error) {
          reject(error);
        });

        _this5.write(stream, options).then(function () {
          stream.end();
        });
      });
    }
  }, {
    key: "writeBuffer",
    value: function () {
      var _writeBuffer = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee25(options) {
        var stream;
        return regeneratorRuntime.wrap(function _callee25$(_context25) {
          while (1) {
            switch (_context25.prev = _context25.next) {
              case 0:
                stream = new StreamBuf();
                _context25.next = 3;
                return this.write(stream, options);

              case 3:
                return _context25.abrupt("return", stream.read());

              case 4:
              case "end":
                return _context25.stop();
            }
          }
        }, _callee25, this);
      }));

      function writeBuffer(_x52) {
        return _writeBuffer.apply(this, arguments);
      }

      return writeBuffer;
    }()
  }]);

  return XLSX;
}();

XLSX.RelType = require('./rel-type');
module.exports = XLSX;


}).call(this,require("buffer").Buffer)
},{"../utils/stream-buf":20,"../utils/utils":23,"../utils/xml-stream":24,"../utils/zip-stream":25,"./rel-type":27,"./xform/book/workbook-xform":34,"./xform/comment/comments-xform":36,"./xform/comment/vml-notes-xform":39,"./xform/core/app-xform":42,"./xform/core/content-types-xform":43,"./xform/core/core-xform":44,"./xform/core/relationships-xform":46,"./xform/drawing/drawing-xform":51,"./xform/sheet/worksheet-xform":92,"./xform/strings/shared-strings-xform":101,"./xform/style/styles-xform":112,"./xform/table/table-xform":118,"./xml/theme1.js":120,"buffer":168,"fs":166}],120:[function(require,module,exports){
"use strict";

/* eslint-disable */
module.exports = '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>\n<a:theme xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" name="Office Theme"> <a:themeElements> <a:clrScheme name="Office"> <a:dk1> <a:sysClr val="windowText" lastClr="000000"/> </a:dk1> <a:lt1> <a:sysClr val="window" lastClr="FFFFFF"/> </a:lt1> <a:dk2> <a:srgbClr val="1F497D"/> </a:dk2> <a:lt2> <a:srgbClr val="EEECE1"/> </a:lt2> <a:accent1> <a:srgbClr val="4F81BD"/> </a:accent1> <a:accent2> <a:srgbClr val="C0504D"/> </a:accent2> <a:accent3> <a:srgbClr val="9BBB59"/> </a:accent3> <a:accent4> <a:srgbClr val="8064A2"/> </a:accent4> <a:accent5> <a:srgbClr val="4BACC6"/> </a:accent5> <a:accent6> <a:srgbClr val="F79646"/> </a:accent6> <a:hlink> <a:srgbClr val="0000FF"/> </a:hlink> <a:folHlink> <a:srgbClr val="800080"/> </a:folHlink> </a:clrScheme> <a:fontScheme name="Office"> <a:majorFont> <a:latin typeface="Cambria"/> <a:ea typeface=""/> <a:cs typeface=""/> <a:font script="Jpan" typeface="ＭＳ Ｐゴシック"/> <a:font script="Hang" typeface="맑은 고딕"/> <a:font script="Hans" typeface="宋体"/> <a:font script="Hant" typeface="新細明體"/> <a:font script="Arab" typeface="Times New Roman"/> <a:font script="Hebr" typeface="Times New Roman"/> <a:font script="Thai" typeface="Tahoma"/> <a:font script="Ethi" typeface="Nyala"/> <a:font script="Beng" typeface="Vrinda"/> <a:font script="Gujr" typeface="Shruti"/> <a:font script="Khmr" typeface="MoolBoran"/> <a:font script="Knda" typeface="Tunga"/> <a:font script="Guru" typeface="Raavi"/> <a:font script="Cans" typeface="Euphemia"/> <a:font script="Cher" typeface="Plantagenet Cherokee"/> <a:font script="Yiii" typeface="Microsoft Yi Baiti"/> <a:font script="Tibt" typeface="Microsoft Himalaya"/> <a:font script="Thaa" typeface="MV Boli"/> <a:font script="Deva" typeface="Mangal"/> <a:font script="Telu" typeface="Gautami"/> <a:font script="Taml" typeface="Latha"/> <a:font script="Syrc" typeface="Estrangelo Edessa"/> <a:font script="Orya" typeface="Kalinga"/> <a:font script="Mlym" typeface="Kartika"/> <a:font script="Laoo" typeface="DokChampa"/> <a:font script="Sinh" typeface="Iskoola Pota"/> <a:font script="Mong" typeface="Mongolian Baiti"/> <a:font script="Viet" typeface="Times New Roman"/> <a:font script="Uigh" typeface="Microsoft Uighur"/> <a:font script="Geor" typeface="Sylfaen"/> </a:majorFont> <a:minorFont> <a:latin typeface="Calibri"/> <a:ea typeface=""/> <a:cs typeface=""/> <a:font script="Jpan" typeface="ＭＳ Ｐゴシック"/> <a:font script="Hang" typeface="맑은 고딕"/> <a:font script="Hans" typeface="宋体"/> <a:font script="Hant" typeface="新細明體"/> <a:font script="Arab" typeface="Arial"/> <a:font script="Hebr" typeface="Arial"/> <a:font script="Thai" typeface="Tahoma"/> <a:font script="Ethi" typeface="Nyala"/> <a:font script="Beng" typeface="Vrinda"/> <a:font script="Gujr" typeface="Shruti"/> <a:font script="Khmr" typeface="DaunPenh"/> <a:font script="Knda" typeface="Tunga"/> <a:font script="Guru" typeface="Raavi"/> <a:font script="Cans" typeface="Euphemia"/> <a:font script="Cher" typeface="Plantagenet Cherokee"/> <a:font script="Yiii" typeface="Microsoft Yi Baiti"/> <a:font script="Tibt" typeface="Microsoft Himalaya"/> <a:font script="Thaa" typeface="MV Boli"/> <a:font script="Deva" typeface="Mangal"/> <a:font script="Telu" typeface="Gautami"/> <a:font script="Taml" typeface="Latha"/> <a:font script="Syrc" typeface="Estrangelo Edessa"/> <a:font script="Orya" typeface="Kalinga"/> <a:font script="Mlym" typeface="Kartika"/> <a:font script="Laoo" typeface="DokChampa"/> <a:font script="Sinh" typeface="Iskoola Pota"/> <a:font script="Mong" typeface="Mongolian Baiti"/> <a:font script="Viet" typeface="Arial"/> <a:font script="Uigh" typeface="Microsoft Uighur"/> <a:font script="Geor" typeface="Sylfaen"/> </a:minorFont> </a:fontScheme> <a:fmtScheme name="Office"> <a:fillStyleLst> <a:solidFill> <a:schemeClr val="phClr"/> </a:solidFill> <a:gradFill rotWithShape="1"> <a:gsLst> <a:gs pos="0"> <a:schemeClr val="phClr"> <a:tint val="50000"/> <a:satMod val="300000"/> </a:schemeClr> </a:gs> <a:gs pos="35000"> <a:schemeClr val="phClr"> <a:tint val="37000"/> <a:satMod val="300000"/> </a:schemeClr> </a:gs> <a:gs pos="100000"> <a:schemeClr val="phClr"> <a:tint val="15000"/> <a:satMod val="350000"/> </a:schemeClr> </a:gs> </a:gsLst> <a:lin ang="16200000" scaled="1"/> </a:gradFill> <a:gradFill rotWithShape="1"> <a:gsLst> <a:gs pos="0"> <a:schemeClr val="phClr"> <a:tint val="100000"/> <a:shade val="100000"/> <a:satMod val="130000"/> </a:schemeClr> </a:gs> <a:gs pos="100000"> <a:schemeClr val="phClr"> <a:tint val="50000"/> <a:shade val="100000"/> <a:satMod val="350000"/> </a:schemeClr> </a:gs> </a:gsLst> <a:lin ang="16200000" scaled="0"/> </a:gradFill> </a:fillStyleLst> <a:lnStyleLst> <a:ln w="9525" cap="flat" cmpd="sng" algn="ctr"> <a:solidFill> <a:schemeClr val="phClr"> <a:shade val="95000"/> <a:satMod val="105000"/> </a:schemeClr> </a:solidFill> <a:prstDash val="solid"/> </a:ln> <a:ln w="25400" cap="flat" cmpd="sng" algn="ctr"> <a:solidFill> <a:schemeClr val="phClr"/> </a:solidFill> <a:prstDash val="solid"/> </a:ln> <a:ln w="38100" cap="flat" cmpd="sng" algn="ctr"> <a:solidFill> <a:schemeClr val="phClr"/> </a:solidFill> <a:prstDash val="solid"/> </a:ln> </a:lnStyleLst> <a:effectStyleLst> <a:effectStyle> <a:effectLst> <a:outerShdw blurRad="40000" dist="20000" dir="5400000" rotWithShape="0"> <a:srgbClr val="000000"> <a:alpha val="38000"/> </a:srgbClr> </a:outerShdw> </a:effectLst> </a:effectStyle> <a:effectStyle> <a:effectLst> <a:outerShdw blurRad="40000" dist="23000" dir="5400000" rotWithShape="0"> <a:srgbClr val="000000"> <a:alpha val="35000"/> </a:srgbClr> </a:outerShdw> </a:effectLst> </a:effectStyle> <a:effectStyle> <a:effectLst> <a:outerShdw blurRad="40000" dist="23000" dir="5400000" rotWithShape="0"> <a:srgbClr val="000000"> <a:alpha val="35000"/> </a:srgbClr> </a:outerShdw> </a:effectLst> <a:scene3d> <a:camera prst="orthographicFront"> <a:rot lat="0" lon="0" rev="0"/> </a:camera> <a:lightRig rig="threePt" dir="t"> <a:rot lat="0" lon="0" rev="1200000"/> </a:lightRig> </a:scene3d> <a:sp3d> <a:bevelT w="63500" h="25400"/> </a:sp3d> </a:effectStyle> </a:effectStyleLst> <a:bgFillStyleLst> <a:solidFill> <a:schemeClr val="phClr"/> </a:solidFill> <a:gradFill rotWithShape="1"> <a:gsLst> <a:gs pos="0"> <a:schemeClr val="phClr"> <a:tint val="40000"/> <a:satMod val="350000"/> </a:schemeClr> </a:gs> <a:gs pos="40000"> <a:schemeClr val="phClr"> <a:tint val="45000"/> <a:shade val="99000"/> <a:satMod val="350000"/> </a:schemeClr> </a:gs> <a:gs pos="100000"> <a:schemeClr val="phClr"> <a:shade val="20000"/> <a:satMod val="255000"/> </a:schemeClr> </a:gs> </a:gsLst> <a:path path="circle"> <a:fillToRect l="50000" t="-80000" r="50000" b="180000"/> </a:path> </a:gradFill> <a:gradFill rotWithShape="1"> <a:gsLst> <a:gs pos="0"> <a:schemeClr val="phClr"> <a:tint val="80000"/> <a:satMod val="300000"/> </a:schemeClr> </a:gs> <a:gs pos="100000"> <a:schemeClr val="phClr"> <a:shade val="30000"/> <a:satMod val="200000"/> </a:schemeClr> </a:gs> </a:gsLst> <a:path path="circle"> <a:fillToRect l="50000" t="50000" r="50000" b="50000"/> </a:path> </a:gradFill> </a:bgFillStyleLst> </a:fmtScheme> </a:themeElements> <a:objectDefaults> <a:spDef> <a:spPr/> <a:bodyPr/> <a:lstStyle/> <a:style> <a:lnRef idx="1"> <a:schemeClr val="accent1"/> </a:lnRef> <a:fillRef idx="3"> <a:schemeClr val="accent1"/> </a:fillRef> <a:effectRef idx="2"> <a:schemeClr val="accent1"/> </a:effectRef> <a:fontRef idx="minor"> <a:schemeClr val="lt1"/> </a:fontRef> </a:style> </a:spDef> <a:lnDef> <a:spPr/> <a:bodyPr/> <a:lstStyle/> <a:style> <a:lnRef idx="2"> <a:schemeClr val="accent1"/> </a:lnRef> <a:fillRef idx="0"> <a:schemeClr val="accent1"/> </a:fillRef> <a:effectRef idx="1"> <a:schemeClr val="accent1"/> </a:effectRef> <a:fontRef idx="minor"> <a:schemeClr val="tx1"/> </a:fontRef> </a:style> </a:lnDef> </a:objectDefaults> <a:extraClrSchemeLst/> </a:theme>';


},{}],121:[function(require,module,exports){
var asn1 = exports;

asn1.bignum = require('bn.js');

asn1.define = require('./asn1/api').define;
asn1.base = require('./asn1/base');
asn1.constants = require('./asn1/constants');
asn1.decoders = require('./asn1/decoders');
asn1.encoders = require('./asn1/encoders');

},{"./asn1/api":122,"./asn1/base":124,"./asn1/constants":128,"./asn1/decoders":130,"./asn1/encoders":133,"bn.js":136}],122:[function(require,module,exports){
var asn1 = require('../asn1');
var inherits = require('inherits');

var api = exports;

api.define = function define(name, body) {
  return new Entity(name, body);
};

function Entity(name, body) {
  this.name = name;
  this.body = body;

  this.decoders = {};
  this.encoders = {};
};

Entity.prototype._createNamed = function createNamed(base) {
  var named;
  try {
    named = require('vm').runInThisContext(
      '(function ' + this.name + '(entity) {\n' +
      '  this._initNamed(entity);\n' +
      '})'
    );
  } catch (e) {
    named = function (entity) {
      this._initNamed(entity);
    };
  }
  inherits(named, base);
  named.prototype._initNamed = function initnamed(entity) {
    base.call(this, entity);
  };

  return new named(this);
};

Entity.prototype._getDecoder = function _getDecoder(enc) {
  enc = enc || 'der';
  // Lazily create decoder
  if (!this.decoders.hasOwnProperty(enc))
    this.decoders[enc] = this._createNamed(asn1.decoders[enc]);
  return this.decoders[enc];
};

Entity.prototype.decode = function decode(data, enc, options) {
  return this._getDecoder(enc).decode(data, options);
};

Entity.prototype._getEncoder = function _getEncoder(enc) {
  enc = enc || 'der';
  // Lazily create encoder
  if (!this.encoders.hasOwnProperty(enc))
    this.encoders[enc] = this._createNamed(asn1.encoders[enc]);
  return this.encoders[enc];
};

Entity.prototype.encode = function encode(data, enc, /* internal */ reporter) {
  return this._getEncoder(enc).encode(data, reporter);
};

},{"../asn1":121,"inherits":245,"vm":362}],123:[function(require,module,exports){
var inherits = require('inherits');
var Reporter = require('../base').Reporter;
var Buffer = require('buffer').Buffer;

function DecoderBuffer(base, options) {
  Reporter.call(this, options);
  if (!Buffer.isBuffer(base)) {
    this.error('Input not Buffer');
    return;
  }

  this.base = base;
  this.offset = 0;
  this.length = base.length;
}
inherits(DecoderBuffer, Reporter);
exports.DecoderBuffer = DecoderBuffer;

DecoderBuffer.prototype.save = function save() {
  return { offset: this.offset, reporter: Reporter.prototype.save.call(this) };
};

DecoderBuffer.prototype.restore = function restore(save) {
  // Return skipped data
  var res = new DecoderBuffer(this.base);
  res.offset = save.offset;
  res.length = this.offset;

  this.offset = save.offset;
  Reporter.prototype.restore.call(this, save.reporter);

  return res;
};

DecoderBuffer.prototype.isEmpty = function isEmpty() {
  return this.offset === this.length;
};

DecoderBuffer.prototype.readUInt8 = function readUInt8(fail) {
  if (this.offset + 1 <= this.length)
    return this.base.readUInt8(this.offset++, true);
  else
    return this.error(fail || 'DecoderBuffer overrun');
}

DecoderBuffer.prototype.skip = function skip(bytes, fail) {
  if (!(this.offset + bytes <= this.length))
    return this.error(fail || 'DecoderBuffer overrun');

  var res = new DecoderBuffer(this.base);

  // Share reporter state
  res._reporterState = this._reporterState;

  res.offset = this.offset;
  res.length = this.offset + bytes;
  this.offset += bytes;
  return res;
}

DecoderBuffer.prototype.raw = function raw(save) {
  return this.base.slice(save ? save.offset : this.offset, this.length);
}

function EncoderBuffer(value, reporter) {
  if (Array.isArray(value)) {
    this.length = 0;
    this.value = value.map(function(item) {
      if (!(item instanceof EncoderBuffer))
        item = new EncoderBuffer(item, reporter);
      this.length += item.length;
      return item;
    }, this);
  } else if (typeof value === 'number') {
    if (!(0 <= value && value <= 0xff))
      return reporter.error('non-byte EncoderBuffer value');
    this.value = value;
    this.length = 1;
  } else if (typeof value === 'string') {
    this.value = value;
    this.length = Buffer.byteLength(value);
  } else if (Buffer.isBuffer(value)) {
    this.value = value;
    this.length = value.length;
  } else {
    return reporter.error('Unsupported type: ' + typeof value);
  }
}
exports.EncoderBuffer = EncoderBuffer;

EncoderBuffer.prototype.join = function join(out, offset) {
  if (!out)
    out = new Buffer(this.length);
  if (!offset)
    offset = 0;

  if (this.length === 0)
    return out;

  if (Array.isArray(this.value)) {
    this.value.forEach(function(item) {
      item.join(out, offset);
      offset += item.length;
    });
  } else {
    if (typeof this.value === 'number')
      out[offset] = this.value;
    else if (typeof this.value === 'string')
      out.write(this.value, offset);
    else if (Buffer.isBuffer(this.value))
      this.value.copy(out, offset);
    offset += this.length;
  }

  return out;
};

},{"../base":124,"buffer":168,"inherits":245}],124:[function(require,module,exports){
var base = exports;

base.Reporter = require('./reporter').Reporter;
base.DecoderBuffer = require('./buffer').DecoderBuffer;
base.EncoderBuffer = require('./buffer').EncoderBuffer;
base.Node = require('./node');

},{"./buffer":123,"./node":125,"./reporter":126}],125:[function(require,module,exports){
var Reporter = require('../base').Reporter;
var EncoderBuffer = require('../base').EncoderBuffer;
var DecoderBuffer = require('../base').DecoderBuffer;
var assert = require('minimalistic-assert');

// Supported tags
var tags = [
  'seq', 'seqof', 'set', 'setof', 'objid', 'bool',
  'gentime', 'utctime', 'null_', 'enum', 'int', 'objDesc',
  'bitstr', 'bmpstr', 'charstr', 'genstr', 'graphstr', 'ia5str', 'iso646str',
  'numstr', 'octstr', 'printstr', 't61str', 'unistr', 'utf8str', 'videostr'
];

// Public methods list
var methods = [
  'key', 'obj', 'use', 'optional', 'explicit', 'implicit', 'def', 'choice',
  'any', 'contains'
].concat(tags);

// Overrided methods list
var overrided = [
  '_peekTag', '_decodeTag', '_use',
  '_decodeStr', '_decodeObjid', '_decodeTime',
  '_decodeNull', '_decodeInt', '_decodeBool', '_decodeList',

  '_encodeComposite', '_encodeStr', '_encodeObjid', '_encodeTime',
  '_encodeNull', '_encodeInt', '_encodeBool'
];

function Node(enc, parent) {
  var state = {};
  this._baseState = state;

  state.enc = enc;

  state.parent = parent || null;
  state.children = null;

  // State
  state.tag = null;
  state.args = null;
  state.reverseArgs = null;
  state.choice = null;
  state.optional = false;
  state.any = false;
  state.obj = false;
  state.use = null;
  state.useDecoder = null;
  state.key = null;
  state['default'] = null;
  state.explicit = null;
  state.implicit = null;
  state.contains = null;

  // Should create new instance on each method
  if (!state.parent) {
    state.children = [];
    this._wrap();
  }
}
module.exports = Node;

var stateProps = [
  'enc', 'parent', 'children', 'tag', 'args', 'reverseArgs', 'choice',
  'optional', 'any', 'obj', 'use', 'alteredUse', 'key', 'default', 'explicit',
  'implicit', 'contains'
];

Node.prototype.clone = function clone() {
  var state = this._baseState;
  var cstate = {};
  stateProps.forEach(function(prop) {
    cstate[prop] = state[prop];
  });
  var res = new this.constructor(cstate.parent);
  res._baseState = cstate;
  return res;
};

Node.prototype._wrap = function wrap() {
  var state = this._baseState;
  methods.forEach(function(method) {
    this[method] = function _wrappedMethod() {
      var clone = new this.constructor(this);
      state.children.push(clone);
      return clone[method].apply(clone, arguments);
    };
  }, this);
};

Node.prototype._init = function init(body) {
  var state = this._baseState;

  assert(state.parent === null);
  body.call(this);

  // Filter children
  state.children = state.children.filter(function(child) {
    return child._baseState.parent === this;
  }, this);
  assert.equal(state.children.length, 1, 'Root node can have only one child');
};

Node.prototype._useArgs = function useArgs(args) {
  var state = this._baseState;

  // Filter children and args
  var children = args.filter(function(arg) {
    return arg instanceof this.constructor;
  }, this);
  args = args.filter(function(arg) {
    return !(arg instanceof this.constructor);
  }, this);

  if (children.length !== 0) {
    assert(state.children === null);
    state.children = children;

    // Replace parent to maintain backward link
    children.forEach(function(child) {
      child._baseState.parent = this;
    }, this);
  }
  if (args.length !== 0) {
    assert(state.args === null);
    state.args = args;
    state.reverseArgs = args.map(function(arg) {
      if (typeof arg !== 'object' || arg.constructor !== Object)
        return arg;

      var res = {};
      Object.keys(arg).forEach(function(key) {
        if (key == (key | 0))
          key |= 0;
        var value = arg[key];
        res[value] = key;
      });
      return res;
    });
  }
};

//
// Overrided methods
//

overrided.forEach(function(method) {
  Node.prototype[method] = function _overrided() {
    var state = this._baseState;
    throw new Error(method + ' not implemented for encoding: ' + state.enc);
  };
});

//
// Public methods
//

tags.forEach(function(tag) {
  Node.prototype[tag] = function _tagMethod() {
    var state = this._baseState;
    var args = Array.prototype.slice.call(arguments);

    assert(state.tag === null);
    state.tag = tag;

    this._useArgs(args);

    return this;
  };
});

Node.prototype.use = function use(item) {
  assert(item);
  var state = this._baseState;

  assert(state.use === null);
  state.use = item;

  return this;
};

Node.prototype.optional = function optional() {
  var state = this._baseState;

  state.optional = true;

  return this;
};

Node.prototype.def = function def(val) {
  var state = this._baseState;

  assert(state['default'] === null);
  state['default'] = val;
  state.optional = true;

  return this;
};

Node.prototype.explicit = function explicit(num) {
  var state = this._baseState;

  assert(state.explicit === null && state.implicit === null);
  state.explicit = num;

  return this;
};

Node.prototype.implicit = function implicit(num) {
  var state = this._baseState;

  assert(state.explicit === null && state.implicit === null);
  state.implicit = num;

  return this;
};

Node.prototype.obj = function obj() {
  var state = this._baseState;
  var args = Array.prototype.slice.call(arguments);

  state.obj = true;

  if (args.length !== 0)
    this._useArgs(args);

  return this;
};

Node.prototype.key = function key(newKey) {
  var state = this._baseState;

  assert(state.key === null);
  state.key = newKey;

  return this;
};

Node.prototype.any = function any() {
  var state = this._baseState;

  state.any = true;

  return this;
};

Node.prototype.choice = function choice(obj) {
  var state = this._baseState;

  assert(state.choice === null);
  state.choice = obj;
  this._useArgs(Object.keys(obj).map(function(key) {
    return obj[key];
  }));

  return this;
};

Node.prototype.contains = function contains(item) {
  var state = this._baseState;

  assert(state.use === null);
  state.contains = item;

  return this;
};

//
// Decoding
//

Node.prototype._decode = function decode(input, options) {
  var state = this._baseState;

  // Decode root node
  if (state.parent === null)
    return input.wrapResult(state.children[0]._decode(input, options));

  var result = state['default'];
  var present = true;

  var prevKey = null;
  if (state.key !== null)
    prevKey = input.enterKey(state.key);

  // Check if tag is there
  if (state.optional) {
    var tag = null;
    if (state.explicit !== null)
      tag = state.explicit;
    else if (state.implicit !== null)
      tag = state.implicit;
    else if (state.tag !== null)
      tag = state.tag;

    if (tag === null && !state.any) {
      // Trial and Error
      var save = input.save();
      try {
        if (state.choice === null)
          this._decodeGeneric(state.tag, input, options);
        else
          this._decodeChoice(input, options);
        present = true;
      } catch (e) {
        present = false;
      }
      input.restore(save);
    } else {
      present = this._peekTag(input, tag, state.any);

      if (input.isError(present))
        return present;
    }
  }

  // Push object on stack
  var prevObj;
  if (state.obj && present)
    prevObj = input.enterObject();

  if (present) {
    // Unwrap explicit values
    if (state.explicit !== null) {
      var explicit = this._decodeTag(input, state.explicit);
      if (input.isError(explicit))
        return explicit;
      input = explicit;
    }

    var start = input.offset;

    // Unwrap implicit and normal values
    if (state.use === null && state.choice === null) {
      if (state.any)
        var save = input.save();
      var body = this._decodeTag(
        input,
        state.implicit !== null ? state.implicit : state.tag,
        state.any
      );
      if (input.isError(body))
        return body;

      if (state.any)
        result = input.raw(save);
      else
        input = body;
    }

    if (options && options.track && state.tag !== null)
      options.track(input.path(), start, input.length, 'tagged');

    if (options && options.track && state.tag !== null)
      options.track(input.path(), input.offset, input.length, 'content');

    // Select proper method for tag
    if (state.any)
      result = result;
    else if (state.choice === null)
      result = this._decodeGeneric(state.tag, input, options);
    else
      result = this._decodeChoice(input, options);

    if (input.isError(result))
      return result;

    // Decode children
    if (!state.any && state.choice === null && state.children !== null) {
      state.children.forEach(function decodeChildren(child) {
        // NOTE: We are ignoring errors here, to let parser continue with other
        // parts of encoded data
        child._decode(input, options);
      });
    }

    // Decode contained/encoded by schema, only in bit or octet strings
    if (state.contains && (state.tag === 'octstr' || state.tag === 'bitstr')) {
      var data = new DecoderBuffer(result);
      result = this._getUse(state.contains, input._reporterState.obj)
          ._decode(data, options);
    }
  }

  // Pop object
  if (state.obj && present)
    result = input.leaveObject(prevObj);

  // Set key
  if (state.key !== null && (result !== null || present === true))
    input.leaveKey(prevKey, state.key, result);
  else if (prevKey !== null)
    input.exitKey(prevKey);

  return result;
};

Node.prototype._decodeGeneric = function decodeGeneric(tag, input, options) {
  var state = this._baseState;

  if (tag === 'seq' || tag === 'set')
    return null;
  if (tag === 'seqof' || tag === 'setof')
    return this._decodeList(input, tag, state.args[0], options);
  else if (/str$/.test(tag))
    return this._decodeStr(input, tag, options);
  else if (tag === 'objid' && state.args)
    return this._decodeObjid(input, state.args[0], state.args[1], options);
  else if (tag === 'objid')
    return this._decodeObjid(input, null, null, options);
  else if (tag === 'gentime' || tag === 'utctime')
    return this._decodeTime(input, tag, options);
  else if (tag === 'null_')
    return this._decodeNull(input, options);
  else if (tag === 'bool')
    return this._decodeBool(input, options);
  else if (tag === 'objDesc')
    return this._decodeStr(input, tag, options);
  else if (tag === 'int' || tag === 'enum')
    return this._decodeInt(input, state.args && state.args[0], options);

  if (state.use !== null) {
    return this._getUse(state.use, input._reporterState.obj)
        ._decode(input, options);
  } else {
    return input.error('unknown tag: ' + tag);
  }
};

Node.prototype._getUse = function _getUse(entity, obj) {

  var state = this._baseState;
  // Create altered use decoder if implicit is set
  state.useDecoder = this._use(entity, obj);
  assert(state.useDecoder._baseState.parent === null);
  state.useDecoder = state.useDecoder._baseState.children[0];
  if (state.implicit !== state.useDecoder._baseState.implicit) {
    state.useDecoder = state.useDecoder.clone();
    state.useDecoder._baseState.implicit = state.implicit;
  }
  return state.useDecoder;
};

Node.prototype._decodeChoice = function decodeChoice(input, options) {
  var state = this._baseState;
  var result = null;
  var match = false;

  Object.keys(state.choice).some(function(key) {
    var save = input.save();
    var node = state.choice[key];
    try {
      var value = node._decode(input, options);
      if (input.isError(value))
        return false;

      result = { type: key, value: value };
      match = true;
    } catch (e) {
      input.restore(save);
      return false;
    }
    return true;
  }, this);

  if (!match)
    return input.error('Choice not matched');

  return result;
};

//
// Encoding
//

Node.prototype._createEncoderBuffer = function createEncoderBuffer(data) {
  return new EncoderBuffer(data, this.reporter);
};

Node.prototype._encode = function encode(data, reporter, parent) {
  var state = this._baseState;
  if (state['default'] !== null && state['default'] === data)
    return;

  var result = this._encodeValue(data, reporter, parent);
  if (result === undefined)
    return;

  if (this._skipDefault(result, reporter, parent))
    return;

  return result;
};

Node.prototype._encodeValue = function encode(data, reporter, parent) {
  var state = this._baseState;

  // Decode root node
  if (state.parent === null)
    return state.children[0]._encode(data, reporter || new Reporter());

  var result = null;

  // Set reporter to share it with a child class
  this.reporter = reporter;

  // Check if data is there
  if (state.optional && data === undefined) {
    if (state['default'] !== null)
      data = state['default']
    else
      return;
  }

  // Encode children first
  var content = null;
  var primitive = false;
  if (state.any) {
    // Anything that was given is translated to buffer
    result = this._createEncoderBuffer(data);
  } else if (state.choice) {
    result = this._encodeChoice(data, reporter);
  } else if (state.contains) {
    content = this._getUse(state.contains, parent)._encode(data, reporter);
    primitive = true;
  } else if (state.children) {
    content = state.children.map(function(child) {
      if (child._baseState.tag === 'null_')
        return child._encode(null, reporter, data);

      if (child._baseState.key === null)
        return reporter.error('Child should have a key');
      var prevKey = reporter.enterKey(child._baseState.key);

      if (typeof data !== 'object')
        return reporter.error('Child expected, but input is not object');

      var res = child._encode(data[child._baseState.key], reporter, data);
      reporter.leaveKey(prevKey);

      return res;
    }, this).filter(function(child) {
      return child;
    });
    content = this._createEncoderBuffer(content);
  } else {
    if (state.tag === 'seqof' || state.tag === 'setof') {
      // TODO(indutny): this should be thrown on DSL level
      if (!(state.args && state.args.length === 1))
        return reporter.error('Too many args for : ' + state.tag);

      if (!Array.isArray(data))
        return reporter.error('seqof/setof, but data is not Array');

      var child = this.clone();
      child._baseState.implicit = null;
      content = this._createEncoderBuffer(data.map(function(item) {
        var state = this._baseState;

        return this._getUse(state.args[0], data)._encode(item, reporter);
      }, child));
    } else if (state.use !== null) {
      result = this._getUse(state.use, parent)._encode(data, reporter);
    } else {
      content = this._encodePrimitive(state.tag, data);
      primitive = true;
    }
  }

  // Encode data itself
  var result;
  if (!state.any && state.choice === null) {
    var tag = state.implicit !== null ? state.implicit : state.tag;
    var cls = state.implicit === null ? 'universal' : 'context';

    if (tag === null) {
      if (state.use === null)
        reporter.error('Tag could be omitted only for .use()');
    } else {
      if (state.use === null)
        result = this._encodeComposite(tag, primitive, cls, content);
    }
  }

  // Wrap in explicit
  if (state.explicit !== null)
    result = this._encodeComposite(state.explicit, false, 'context', result);

  return result;
};

Node.prototype._encodeChoice = function encodeChoice(data, reporter) {
  var state = this._baseState;

  var node = state.choice[data.type];
  if (!node) {
    assert(
        false,
        data.type + ' not found in ' +
            JSON.stringify(Object.keys(state.choice)));
  }
  return node._encode(data.value, reporter);
};

Node.prototype._encodePrimitive = function encodePrimitive(tag, data) {
  var state = this._baseState;

  if (/str$/.test(tag))
    return this._encodeStr(data, tag);
  else if (tag === 'objid' && state.args)
    return this._encodeObjid(data, state.reverseArgs[0], state.args[1]);
  else if (tag === 'objid')
    return this._encodeObjid(data, null, null);
  else if (tag === 'gentime' || tag === 'utctime')
    return this._encodeTime(data, tag);
  else if (tag === 'null_')
    return this._encodeNull();
  else if (tag === 'int' || tag === 'enum')
    return this._encodeInt(data, state.args && state.reverseArgs[0]);
  else if (tag === 'bool')
    return this._encodeBool(data);
  else if (tag === 'objDesc')
    return this._encodeStr(data, tag);
  else
    throw new Error('Unsupported tag: ' + tag);
};

Node.prototype._isNumstr = function isNumstr(str) {
  return /^[0-9 ]*$/.test(str);
};

Node.prototype._isPrintstr = function isPrintstr(str) {
  return /^[A-Za-z0-9 '\(\)\+,\-\.\/:=\?]*$/.test(str);
};

},{"../base":124,"minimalistic-assert":287}],126:[function(require,module,exports){
var inherits = require('inherits');

function Reporter(options) {
  this._reporterState = {
    obj: null,
    path: [],
    options: options || {},
    errors: []
  };
}
exports.Reporter = Reporter;

Reporter.prototype.isError = function isError(obj) {
  return obj instanceof ReporterError;
};

Reporter.prototype.save = function save() {
  var state = this._reporterState;

  return { obj: state.obj, pathLen: state.path.length };
};

Reporter.prototype.restore = function restore(data) {
  var state = this._reporterState;

  state.obj = data.obj;
  state.path = state.path.slice(0, data.pathLen);
};

Reporter.prototype.enterKey = function enterKey(key) {
  return this._reporterState.path.push(key);
};

Reporter.prototype.exitKey = function exitKey(index) {
  var state = this._reporterState;

  state.path = state.path.slice(0, index - 1);
};

Reporter.prototype.leaveKey = function leaveKey(index, key, value) {
  var state = this._reporterState;

  this.exitKey(index);
  if (state.obj !== null)
    state.obj[key] = value;
};

Reporter.prototype.path = function path() {
  return this._reporterState.path.join('/');
};

Reporter.prototype.enterObject = function enterObject() {
  var state = this._reporterState;

  var prev = state.obj;
  state.obj = {};
  return prev;
};

Reporter.prototype.leaveObject = function leaveObject(prev) {
  var state = this._reporterState;

  var now = state.obj;
  state.obj = prev;
  return now;
};

Reporter.prototype.error = function error(msg) {
  var err;
  var state = this._reporterState;

  var inherited = msg instanceof ReporterError;
  if (inherited) {
    err = msg;
  } else {
    err = new ReporterError(state.path.map(function(elem) {
      return '[' + JSON.stringify(elem) + ']';
    }).join(''), msg.message || msg, msg.stack);
  }

  if (!state.options.partial)
    throw err;

  if (!inherited)
    state.errors.push(err);

  return err;
};

Reporter.prototype.wrapResult = function wrapResult(result) {
  var state = this._reporterState;
  if (!state.options.partial)
    return result;

  return {
    result: this.isError(result) ? null : result,
    errors: state.errors
  };
};

function ReporterError(path, msg) {
  this.path = path;
  this.rethrow(msg);
};
inherits(ReporterError, Error);

ReporterError.prototype.rethrow = function rethrow(msg) {
  this.message = msg + ' at: ' + (this.path || '(shallow)');
  if (Error.captureStackTrace)
    Error.captureStackTrace(this, ReporterError);

  if (!this.stack) {
    try {
      // IE only adds stack when thrown
      throw new Error(this.message);
    } catch (e) {
      this.stack = e.stack;
    }
  }
  return this;
};

},{"inherits":245}],127:[function(require,module,exports){
var constants = require('../constants');

exports.tagClass = {
  0: 'universal',
  1: 'application',
  2: 'context',
  3: 'private'
};
exports.tagClassByName = constants._reverse(exports.tagClass);

exports.tag = {
  0x00: 'end',
  0x01: 'bool',
  0x02: 'int',
  0x03: 'bitstr',
  0x04: 'octstr',
  0x05: 'null_',
  0x06: 'objid',
  0x07: 'objDesc',
  0x08: 'external',
  0x09: 'real',
  0x0a: 'enum',
  0x0b: 'embed',
  0x0c: 'utf8str',
  0x0d: 'relativeOid',
  0x10: 'seq',
  0x11: 'set',
  0x12: 'numstr',
  0x13: 'printstr',
  0x14: 't61str',
  0x15: 'videostr',
  0x16: 'ia5str',
  0x17: 'utctime',
  0x18: 'gentime',
  0x19: 'graphstr',
  0x1a: 'iso646str',
  0x1b: 'genstr',
  0x1c: 'unistr',
  0x1d: 'charstr',
  0x1e: 'bmpstr'
};
exports.tagByName = constants._reverse(exports.tag);

},{"../constants":128}],128:[function(require,module,exports){
var constants = exports;

// Helper
constants._reverse = function reverse(map) {
  var res = {};

  Object.keys(map).forEach(function(key) {
    // Convert key to integer if it is stringified
    if ((key | 0) == key)
      key = key | 0;

    var value = map[key];
    res[value] = key;
  });

  return res;
};

constants.der = require('./der');

},{"./der":127}],129:[function(require,module,exports){
var inherits = require('inherits');

var asn1 = require('../../asn1');
var base = asn1.base;
var bignum = asn1.bignum;

// Import DER constants
var der = asn1.constants.der;

function DERDecoder(entity) {
  this.enc = 'der';
  this.name = entity.name;
  this.entity = entity;

  // Construct base tree
  this.tree = new DERNode();
  this.tree._init(entity.body);
};
module.exports = DERDecoder;

DERDecoder.prototype.decode = function decode(data, options) {
  if (!(data instanceof base.DecoderBuffer))
    data = new base.DecoderBuffer(data, options);

  return this.tree._decode(data, options);
};

// Tree methods

function DERNode(parent) {
  base.Node.call(this, 'der', parent);
}
inherits(DERNode, base.Node);

DERNode.prototype._peekTag = function peekTag(buffer, tag, any) {
  if (buffer.isEmpty())
    return false;

  var state = buffer.save();
  var decodedTag = derDecodeTag(buffer, 'Failed to peek tag: "' + tag + '"');
  if (buffer.isError(decodedTag))
    return decodedTag;

  buffer.restore(state);

  return decodedTag.tag === tag || decodedTag.tagStr === tag ||
    (decodedTag.tagStr + 'of') === tag || any;
};

DERNode.prototype._decodeTag = function decodeTag(buffer, tag, any) {
  var decodedTag = derDecodeTag(buffer,
                                'Failed to decode tag of "' + tag + '"');
  if (buffer.isError(decodedTag))
    return decodedTag;

  var len = derDecodeLen(buffer,
                         decodedTag.primitive,
                         'Failed to get length of "' + tag + '"');

  // Failure
  if (buffer.isError(len))
    return len;

  if (!any &&
      decodedTag.tag !== tag &&
      decodedTag.tagStr !== tag &&
      decodedTag.tagStr + 'of' !== tag) {
    return buffer.error('Failed to match tag: "' + tag + '"');
  }

  if (decodedTag.primitive || len !== null)
    return buffer.skip(len, 'Failed to match body of: "' + tag + '"');

  // Indefinite length... find END tag
  var state = buffer.save();
  var res = this._skipUntilEnd(
      buffer,
      'Failed to skip indefinite length body: "' + this.tag + '"');
  if (buffer.isError(res))
    return res;

  len = buffer.offset - state.offset;
  buffer.restore(state);
  return buffer.skip(len, 'Failed to match body of: "' + tag + '"');
};

DERNode.prototype._skipUntilEnd = function skipUntilEnd(buffer, fail) {
  while (true) {
    var tag = derDecodeTag(buffer, fail);
    if (buffer.isError(tag))
      return tag;
    var len = derDecodeLen(buffer, tag.primitive, fail);
    if (buffer.isError(len))
      return len;

    var res;
    if (tag.primitive || len !== null)
      res = buffer.skip(len)
    else
      res = this._skipUntilEnd(buffer, fail);

    // Failure
    if (buffer.isError(res))
      return res;

    if (tag.tagStr === 'end')
      break;
  }
};

DERNode.prototype._decodeList = function decodeList(buffer, tag, decoder,
                                                    options) {
  var result = [];
  while (!buffer.isEmpty()) {
    var possibleEnd = this._peekTag(buffer, 'end');
    if (buffer.isError(possibleEnd))
      return possibleEnd;

    var res = decoder.decode(buffer, 'der', options);
    if (buffer.isError(res) && possibleEnd)
      break;
    result.push(res);
  }
  return result;
};

DERNode.prototype._decodeStr = function decodeStr(buffer, tag) {
  if (tag === 'bitstr') {
    var unused = buffer.readUInt8();
    if (buffer.isError(unused))
      return unused;
    return { unused: unused, data: buffer.raw() };
  } else if (tag === 'bmpstr') {
    var raw = buffer.raw();
    if (raw.length % 2 === 1)
      return buffer.error('Decoding of string type: bmpstr length mismatch');

    var str = '';
    for (var i = 0; i < raw.length / 2; i++) {
      str += String.fromCharCode(raw.readUInt16BE(i * 2));
    }
    return str;
  } else if (tag === 'numstr') {
    var numstr = buffer.raw().toString('ascii');
    if (!this._isNumstr(numstr)) {
      return buffer.error('Decoding of string type: ' +
                          'numstr unsupported characters');
    }
    return numstr;
  } else if (tag === 'octstr') {
    return buffer.raw();
  } else if (tag === 'objDesc') {
    return buffer.raw();
  } else if (tag === 'printstr') {
    var printstr = buffer.raw().toString('ascii');
    if (!this._isPrintstr(printstr)) {
      return buffer.error('Decoding of string type: ' +
                          'printstr unsupported characters');
    }
    return printstr;
  } else if (/str$/.test(tag)) {
    return buffer.raw().toString();
  } else {
    return buffer.error('Decoding of string type: ' + tag + ' unsupported');
  }
};

DERNode.prototype._decodeObjid = function decodeObjid(buffer, values, relative) {
  var result;
  var identifiers = [];
  var ident = 0;
  while (!buffer.isEmpty()) {
    var subident = buffer.readUInt8();
    ident <<= 7;
    ident |= subident & 0x7f;
    if ((subident & 0x80) === 0) {
      identifiers.push(ident);
      ident = 0;
    }
  }
  if (subident & 0x80)
    identifiers.push(ident);

  var first = (identifiers[0] / 40) | 0;
  var second = identifiers[0] % 40;

  if (relative)
    result = identifiers;
  else
    result = [first, second].concat(identifiers.slice(1));

  if (values) {
    var tmp = values[result.join(' ')];
    if (tmp === undefined)
      tmp = values[result.join('.')];
    if (tmp !== undefined)
      result = tmp;
  }

  return result;
};

DERNode.prototype._decodeTime = function decodeTime(buffer, tag) {
  var str = buffer.raw().toString();
  if (tag === 'gentime') {
    var year = str.slice(0, 4) | 0;
    var mon = str.slice(4, 6) | 0;
    var day = str.slice(6, 8) | 0;
    var hour = str.slice(8, 10) | 0;
    var min = str.slice(10, 12) | 0;
    var sec = str.slice(12, 14) | 0;
  } else if (tag === 'utctime') {
    var year = str.slice(0, 2) | 0;
    var mon = str.slice(2, 4) | 0;
    var day = str.slice(4, 6) | 0;
    var hour = str.slice(6, 8) | 0;
    var min = str.slice(8, 10) | 0;
    var sec = str.slice(10, 12) | 0;
    if (year < 70)
      year = 2000 + year;
    else
      year = 1900 + year;
  } else {
    return buffer.error('Decoding ' + tag + ' time is not supported yet');
  }

  return Date.UTC(year, mon - 1, day, hour, min, sec, 0);
};

DERNode.prototype._decodeNull = function decodeNull(buffer) {
  return null;
};

DERNode.prototype._decodeBool = function decodeBool(buffer) {
  var res = buffer.readUInt8();
  if (buffer.isError(res))
    return res;
  else
    return res !== 0;
};

DERNode.prototype._decodeInt = function decodeInt(buffer, values) {
  // Bigint, return as it is (assume big endian)
  var raw = buffer.raw();
  var res = new bignum(raw);

  if (values)
    res = values[res.toString(10)] || res;

  return res;
};

DERNode.prototype._use = function use(entity, obj) {
  if (typeof entity === 'function')
    entity = entity(obj);
  return entity._getDecoder('der').tree;
};

// Utility methods

function derDecodeTag(buf, fail) {
  var tag = buf.readUInt8(fail);
  if (buf.isError(tag))
    return tag;

  var cls = der.tagClass[tag >> 6];
  var primitive = (tag & 0x20) === 0;

  // Multi-octet tag - load
  if ((tag & 0x1f) === 0x1f) {
    var oct = tag;
    tag = 0;
    while ((oct & 0x80) === 0x80) {
      oct = buf.readUInt8(fail);
      if (buf.isError(oct))
        return oct;

      tag <<= 7;
      tag |= oct & 0x7f;
    }
  } else {
    tag &= 0x1f;
  }
  var tagStr = der.tag[tag];

  return {
    cls: cls,
    primitive: primitive,
    tag: tag,
    tagStr: tagStr
  };
}

function derDecodeLen(buf, primitive, fail) {
  var len = buf.readUInt8(fail);
  if (buf.isError(len))
    return len;

  // Indefinite form
  if (!primitive && len === 0x80)
    return null;

  // Definite form
  if ((len & 0x80) === 0) {
    // Short form
    return len;
  }

  // Long form
  var num = len & 0x7f;
  if (num > 4)
    return buf.error('length octect is too long');

  len = 0;
  for (var i = 0; i < num; i++) {
    len <<= 8;
    var j = buf.readUInt8(fail);
    if (buf.isError(j))
      return j;
    len |= j;
  }

  return len;
}

},{"../../asn1":121,"inherits":245}],130:[function(require,module,exports){
var decoders = exports;

decoders.der = require('./der');
decoders.pem = require('./pem');

},{"./der":129,"./pem":131}],131:[function(require,module,exports){
var inherits = require('inherits');
var Buffer = require('buffer').Buffer;

var DERDecoder = require('./der');

function PEMDecoder(entity) {
  DERDecoder.call(this, entity);
  this.enc = 'pem';
};
inherits(PEMDecoder, DERDecoder);
module.exports = PEMDecoder;

PEMDecoder.prototype.decode = function decode(data, options) {
  var lines = data.toString().split(/[\r\n]+/g);

  var label = options.label.toUpperCase();

  var re = /^-----(BEGIN|END) ([^-]+)-----$/;
  var start = -1;
  var end = -1;
  for (var i = 0; i < lines.length; i++) {
    var match = lines[i].match(re);
    if (match === null)
      continue;

    if (match[2] !== label)
      continue;

    if (start === -1) {
      if (match[1] !== 'BEGIN')
        break;
      start = i;
    } else {
      if (match[1] !== 'END')
        break;
      end = i;
      break;
    }
  }
  if (start === -1 || end === -1)
    throw new Error('PEM section not found for: ' + label);

  var base64 = lines.slice(start + 1, end).join('');
  // Remove excessive symbols
  base64.replace(/[^a-z0-9\+\/=]+/gi, '');

  var input = new Buffer(base64, 'base64');
  return DERDecoder.prototype.decode.call(this, input, options);
};

},{"./der":129,"buffer":168,"inherits":245}],132:[function(require,module,exports){
var inherits = require('inherits');
var Buffer = require('buffer').Buffer;

var asn1 = require('../../asn1');
var base = asn1.base;

// Import DER constants
var der = asn1.constants.der;

function DEREncoder(entity) {
  this.enc = 'der';
  this.name = entity.name;
  this.entity = entity;

  // Construct base tree
  this.tree = new DERNode();
  this.tree._init(entity.body);
};
module.exports = DEREncoder;

DEREncoder.prototype.encode = function encode(data, reporter) {
  return this.tree._encode(data, reporter).join();
};

// Tree methods

function DERNode(parent) {
  base.Node.call(this, 'der', parent);
}
inherits(DERNode, base.Node);

DERNode.prototype._encodeComposite = function encodeComposite(tag,
                                                              primitive,
                                                              cls,
                                                              content) {
  var encodedTag = encodeTag(tag, primitive, cls, this.reporter);

  // Short form
  if (content.length < 0x80) {
    var header = new Buffer(2);
    header[0] = encodedTag;
    header[1] = content.length;
    return this._createEncoderBuffer([ header, content ]);
  }

  // Long form
  // Count octets required to store length
  var lenOctets = 1;
  for (var i = content.length; i >= 0x100; i >>= 8)
    lenOctets++;

  var header = new Buffer(1 + 1 + lenOctets);
  header[0] = encodedTag;
  header[1] = 0x80 | lenOctets;

  for (var i = 1 + lenOctets, j = content.length; j > 0; i--, j >>= 8)
    header[i] = j & 0xff;

  return this._createEncoderBuffer([ header, content ]);
};

DERNode.prototype._encodeStr = function encodeStr(str, tag) {
  if (tag === 'bitstr') {
    return this._createEncoderBuffer([ str.unused | 0, str.data ]);
  } else if (tag === 'bmpstr') {
    var buf = new Buffer(str.length * 2);
    for (var i = 0; i < str.length; i++) {
      buf.writeUInt16BE(str.charCodeAt(i), i * 2);
    }
    return this._createEncoderBuffer(buf);
  } else if (tag === 'numstr') {
    if (!this._isNumstr(str)) {
      return this.reporter.error('Encoding of string type: numstr supports ' +
                                 'only digits and space');
    }
    return this._createEncoderBuffer(str);
  } else if (tag === 'printstr') {
    if (!this._isPrintstr(str)) {
      return this.reporter.error('Encoding of string type: printstr supports ' +
                                 'only latin upper and lower case letters, ' +
                                 'digits, space, apostrophe, left and rigth ' +
                                 'parenthesis, plus sign, comma, hyphen, ' +
                                 'dot, slash, colon, equal sign, ' +
                                 'question mark');
    }
    return this._createEncoderBuffer(str);
  } else if (/str$/.test(tag)) {
    return this._createEncoderBuffer(str);
  } else if (tag === 'objDesc') {
    return this._createEncoderBuffer(str);
  } else {
    return this.reporter.error('Encoding of string type: ' + tag +
                               ' unsupported');
  }
};

DERNode.prototype._encodeObjid = function encodeObjid(id, values, relative) {
  if (typeof id === 'string') {
    if (!values)
      return this.reporter.error('string objid given, but no values map found');
    if (!values.hasOwnProperty(id))
      return this.reporter.error('objid not found in values map');
    id = values[id].split(/[\s\.]+/g);
    for (var i = 0; i < id.length; i++)
      id[i] |= 0;
  } else if (Array.isArray(id)) {
    id = id.slice();
    for (var i = 0; i < id.length; i++)
      id[i] |= 0;
  }

  if (!Array.isArray(id)) {
    return this.reporter.error('objid() should be either array or string, ' +
                               'got: ' + JSON.stringify(id));
  }

  if (!relative) {
    if (id[1] >= 40)
      return this.reporter.error('Second objid identifier OOB');
    id.splice(0, 2, id[0] * 40 + id[1]);
  }

  // Count number of octets
  var size = 0;
  for (var i = 0; i < id.length; i++) {
    var ident = id[i];
    for (size++; ident >= 0x80; ident >>= 7)
      size++;
  }

  var objid = new Buffer(size);
  var offset = objid.length - 1;
  for (var i = id.length - 1; i >= 0; i--) {
    var ident = id[i];
    objid[offset--] = ident & 0x7f;
    while ((ident >>= 7) > 0)
      objid[offset--] = 0x80 | (ident & 0x7f);
  }

  return this._createEncoderBuffer(objid);
};

function two(num) {
  if (num < 10)
    return '0' + num;
  else
    return num;
}

DERNode.prototype._encodeTime = function encodeTime(time, tag) {
  var str;
  var date = new Date(time);

  if (tag === 'gentime') {
    str = [
      two(date.getFullYear()),
      two(date.getUTCMonth() + 1),
      two(date.getUTCDate()),
      two(date.getUTCHours()),
      two(date.getUTCMinutes()),
      two(date.getUTCSeconds()),
      'Z'
    ].join('');
  } else if (tag === 'utctime') {
    str = [
      two(date.getFullYear() % 100),
      two(date.getUTCMonth() + 1),
      two(date.getUTCDate()),
      two(date.getUTCHours()),
      two(date.getUTCMinutes()),
      two(date.getUTCSeconds()),
      'Z'
    ].join('');
  } else {
    this.reporter.error('Encoding ' + tag + ' time is not supported yet');
  }

  return this._encodeStr(str, 'octstr');
};

DERNode.prototype._encodeNull = function encodeNull() {
  return this._createEncoderBuffer('');
};

DERNode.prototype._encodeInt = function encodeInt(num, values) {
  if (typeof num === 'string') {
    if (!values)
      return this.reporter.error('String int or enum given, but no values map');
    if (!values.hasOwnProperty(num)) {
      return this.reporter.error('Values map doesn\'t contain: ' +
                                 JSON.stringify(num));
    }
    num = values[num];
  }

  // Bignum, assume big endian
  if (typeof num !== 'number' && !Buffer.isBuffer(num)) {
    var numArray = num.toArray();
    if (!num.sign && numArray[0] & 0x80) {
      numArray.unshift(0);
    }
    num = new Buffer(numArray);
  }

  if (Buffer.isBuffer(num)) {
    var size = num.length;
    if (num.length === 0)
      size++;

    var out = new Buffer(size);
    num.copy(out);
    if (num.length === 0)
      out[0] = 0
    return this._createEncoderBuffer(out);
  }

  if (num < 0x80)
    return this._createEncoderBuffer(num);

  if (num < 0x100)
    return this._createEncoderBuffer([0, num]);

  var size = 1;
  for (var i = num; i >= 0x100; i >>= 8)
    size++;

  var out = new Array(size);
  for (var i = out.length - 1; i >= 0; i--) {
    out[i] = num & 0xff;
    num >>= 8;
  }
  if(out[0] & 0x80) {
    out.unshift(0);
  }

  return this._createEncoderBuffer(new Buffer(out));
};

DERNode.prototype._encodeBool = function encodeBool(value) {
  return this._createEncoderBuffer(value ? 0xff : 0);
};

DERNode.prototype._use = function use(entity, obj) {
  if (typeof entity === 'function')
    entity = entity(obj);
  return entity._getEncoder('der').tree;
};

DERNode.prototype._skipDefault = function skipDefault(dataBuffer, reporter, parent) {
  var state = this._baseState;
  var i;
  if (state['default'] === null)
    return false;

  var data = dataBuffer.join();
  if (state.defaultBuffer === undefined)
    state.defaultBuffer = this._encodeValue(state['default'], reporter, parent).join();

  if (data.length !== state.defaultBuffer.length)
    return false;

  for (i=0; i < data.length; i++)
    if (data[i] !== state.defaultBuffer[i])
      return false;

  return true;
};

// Utility methods

function encodeTag(tag, primitive, cls, reporter) {
  var res;

  if (tag === 'seqof')
    tag = 'seq';
  else if (tag === 'setof')
    tag = 'set';

  if (der.tagByName.hasOwnProperty(tag))
    res = der.tagByName[tag];
  else if (typeof tag === 'number' && (tag | 0) === tag)
    res = tag;
  else
    return reporter.error('Unknown tag: ' + tag);

  if (res >= 0x1f)
    return reporter.error('Multi-octet tag encoding unsupported');

  if (!primitive)
    res |= 0x20;

  res |= (der.tagClassByName[cls || 'universal'] << 6);

  return res;
}

},{"../../asn1":121,"buffer":168,"inherits":245}],133:[function(require,module,exports){
var encoders = exports;

encoders.der = require('./der');
encoders.pem = require('./pem');

},{"./der":132,"./pem":134}],134:[function(require,module,exports){
var inherits = require('inherits');

var DEREncoder = require('./der');

function PEMEncoder(entity) {
  DEREncoder.call(this, entity);
  this.enc = 'pem';
};
inherits(PEMEncoder, DEREncoder);
module.exports = PEMEncoder;

PEMEncoder.prototype.encode = function encode(data, options) {
  var buf = DEREncoder.prototype.encode.call(this, data);

  var p = buf.toString('base64');
  var out = [ '-----BEGIN ' + options.label + '-----' ];
  for (var i = 0; i < p.length; i += 64)
    out.push(p.slice(i, i + 64));
  out.push('-----END ' + options.label + '-----');
  return out.join('\n');
};

},{"./der":132,"inherits":245}],135:[function(require,module,exports){
'use strict'

exports.byteLength = byteLength
exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray

var lookup = []
var revLookup = []
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array

var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (var i = 0, len = code.length; i < len; ++i) {
  lookup[i] = code[i]
  revLookup[code.charCodeAt(i)] = i
}

// Support decoding URL-safe base64 strings, as Node.js does.
// See: https://en.wikipedia.org/wiki/Base64#URL_applications
revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63

function getLens (b64) {
  var len = b64.length

  if (len % 4 > 0) {
    throw new Error('Invalid string. Length must be a multiple of 4')
  }

  // Trim off extra bytes after placeholder bytes are found
  // See: https://github.com/beatgammit/base64-js/issues/42
  var validLen = b64.indexOf('=')
  if (validLen === -1) validLen = len

  var placeHoldersLen = validLen === len
    ? 0
    : 4 - (validLen % 4)

  return [validLen, placeHoldersLen]
}

// base64 is 4/3 + up to two characters of the original data
function byteLength (b64) {
  var lens = getLens(b64)
  var validLen = lens[0]
  var placeHoldersLen = lens[1]
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function _byteLength (b64, validLen, placeHoldersLen) {
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function toByteArray (b64) {
  var tmp
  var lens = getLens(b64)
  var validLen = lens[0]
  var placeHoldersLen = lens[1]

  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))

  var curByte = 0

  // if there are placeholders, only get up to the last complete 4 chars
  var len = placeHoldersLen > 0
    ? validLen - 4
    : validLen

  var i
  for (i = 0; i < len; i += 4) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 18) |
      (revLookup[b64.charCodeAt(i + 1)] << 12) |
      (revLookup[b64.charCodeAt(i + 2)] << 6) |
      revLookup[b64.charCodeAt(i + 3)]
    arr[curByte++] = (tmp >> 16) & 0xFF
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 2) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 2) |
      (revLookup[b64.charCodeAt(i + 1)] >> 4)
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 1) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 10) |
      (revLookup[b64.charCodeAt(i + 1)] << 4) |
      (revLookup[b64.charCodeAt(i + 2)] >> 2)
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  return arr
}

function tripletToBase64 (num) {
  return lookup[num >> 18 & 0x3F] +
    lookup[num >> 12 & 0x3F] +
    lookup[num >> 6 & 0x3F] +
    lookup[num & 0x3F]
}

function encodeChunk (uint8, start, end) {
  var tmp
  var output = []
  for (var i = start; i < end; i += 3) {
    tmp =
      ((uint8[i] << 16) & 0xFF0000) +
      ((uint8[i + 1] << 8) & 0xFF00) +
      (uint8[i + 2] & 0xFF)
    output.push(tripletToBase64(tmp))
  }
  return output.join('')
}

function fromByteArray (uint8) {
  var tmp
  var len = uint8.length
  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
  var parts = []
  var maxChunkLength = 16383 // must be multiple of 3

  // go through the array every three bytes, we'll deal with trailing stuff later
  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
    parts.push(encodeChunk(
      uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)
    ))
  }

  // pad the end with zeros, but make sure to not forget the extra bytes
  if (extraBytes === 1) {
    tmp = uint8[len - 1]
    parts.push(
      lookup[tmp >> 2] +
      lookup[(tmp << 4) & 0x3F] +
      '=='
    )
  } else if (extraBytes === 2) {
    tmp = (uint8[len - 2] << 8) + uint8[len - 1]
    parts.push(
      lookup[tmp >> 10] +
      lookup[(tmp >> 4) & 0x3F] +
      lookup[(tmp << 2) & 0x3F] +
      '='
    )
  }

  return parts.join('')
}

},{}],136:[function(require,module,exports){
(function (module, exports) {
  'use strict';

  // Utils
  function assert (val, msg) {
    if (!val) throw new Error(msg || 'Assertion failed');
  }

  // Could use `inherits` module, but don't want to move from single file
  // architecture yet.
  function inherits (ctor, superCtor) {
    ctor.super_ = superCtor;
    var TempCtor = function () {};
    TempCtor.prototype = superCtor.prototype;
    ctor.prototype = new TempCtor();
    ctor.prototype.constructor = ctor;
  }

  // BN

  function BN (number, base, endian) {
    if (BN.isBN(number)) {
      return number;
    }

    this.negative = 0;
    this.words = null;
    this.length = 0;

    // Reduction context
    this.red = null;

    if (number !== null) {
      if (base === 'le' || base === 'be') {
        endian = base;
        base = 10;
      }

      this._init(number || 0, base || 10, endian || 'be');
    }
  }
  if (typeof module === 'object') {
    module.exports = BN;
  } else {
    exports.BN = BN;
  }

  BN.BN = BN;
  BN.wordSize = 26;

  var Buffer;
  try {
    Buffer = require('buffer').Buffer;
  } catch (e) {
  }

  BN.isBN = function isBN (num) {
    if (num instanceof BN) {
      return true;
    }

    return num !== null && typeof num === 'object' &&
      num.constructor.wordSize === BN.wordSize && Array.isArray(num.words);
  };

  BN.max = function max (left, right) {
    if (left.cmp(right) > 0) return left;
    return right;
  };

  BN.min = function min (left, right) {
    if (left.cmp(right) < 0) return left;
    return right;
  };

  BN.prototype._init = function init (number, base, endian) {
    if (typeof number === 'number') {
      return this._initNumber(number, base, endian);
    }

    if (typeof number === 'object') {
      return this._initArray(number, base, endian);
    }

    if (base === 'hex') {
      base = 16;
    }
    assert(base === (base | 0) && base >= 2 && base <= 36);

    number = number.toString().replace(/\s+/g, '');
    var start = 0;
    if (number[0] === '-') {
      start++;
    }

    if (base === 16) {
      this._parseHex(number, start);
    } else {
      this._parseBase(number, base, start);
    }

    if (number[0] === '-') {
      this.negative = 1;
    }

    this.strip();

    if (endian !== 'le') return;

    this._initArray(this.toArray(), base, endian);
  };

  BN.prototype._initNumber = function _initNumber (number, base, endian) {
    if (number < 0) {
      this.negative = 1;
      number = -number;
    }
    if (number < 0x4000000) {
      this.words = [ number & 0x3ffffff ];
      this.length = 1;
    } else if (number < 0x10000000000000) {
      this.words = [
        number & 0x3ffffff,
        (number / 0x4000000) & 0x3ffffff
      ];
      this.length = 2;
    } else {
      assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
      this.words = [
        number & 0x3ffffff,
        (number / 0x4000000) & 0x3ffffff,
        1
      ];
      this.length = 3;
    }

    if (endian !== 'le') return;

    // Reverse the bytes
    this._initArray(this.toArray(), base, endian);
  };

  BN.prototype._initArray = function _initArray (number, base, endian) {
    // Perhaps a Uint8Array
    assert(typeof number.length === 'number');
    if (number.length <= 0) {
      this.words = [ 0 ];
      this.length = 1;
      return this;
    }

    this.length = Math.ceil(number.length / 3);
    this.words = new Array(this.length);
    for (var i = 0; i < this.length; i++) {
      this.words[i] = 0;
    }

    var j, w;
    var off = 0;
    if (endian === 'be') {
      for (i = number.length - 1, j = 0; i >= 0; i -= 3) {
        w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
        this.words[j] |= (w << off) & 0x3ffffff;
        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
        off += 24;
        if (off >= 26) {
          off -= 26;
          j++;
        }
      }
    } else if (endian === 'le') {
      for (i = 0, j = 0; i < number.length; i += 3) {
        w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
        this.words[j] |= (w << off) & 0x3ffffff;
        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
        off += 24;
        if (off >= 26) {
          off -= 26;
          j++;
        }
      }
    }
    return this.strip();
  };

  function parseHex (str, start, end) {
    var r = 0;
    var len = Math.min(str.length, end);
    for (var i = start; i < len; i++) {
      var c = str.charCodeAt(i) - 48;

      r <<= 4;

      // 'a' - 'f'
      if (c >= 49 && c <= 54) {
        r |= c - 49 + 0xa;

      // 'A' - 'F'
      } else if (c >= 17 && c <= 22) {
        r |= c - 17 + 0xa;

      // '0' - '9'
      } else {
        r |= c & 0xf;
      }
    }
    return r;
  }

  BN.prototype._parseHex = function _parseHex (number, start) {
    // Create possibly bigger array to ensure that it fits the number
    this.length = Math.ceil((number.length - start) / 6);
    this.words = new Array(this.length);
    for (var i = 0; i < this.length; i++) {
      this.words[i] = 0;
    }

    var j, w;
    // Scan 24-bit chunks and add them to the number
    var off = 0;
    for (i = number.length - 6, j = 0; i >= start; i -= 6) {
      w = parseHex(number, i, i + 6);
      this.words[j] |= (w << off) & 0x3ffffff;
      // NOTE: `0x3fffff` is intentional here, 26bits max shift + 24bit hex limb
      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
      off += 24;
      if (off >= 26) {
        off -= 26;
        j++;
      }
    }
    if (i + 6 !== start) {
      w = parseHex(number, start, i + 6);
      this.words[j] |= (w << off) & 0x3ffffff;
      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
    }
    this.strip();
  };

  function parseBase (str, start, end, mul) {
    var r = 0;
    var len = Math.min(str.length, end);
    for (var i = start; i < len; i++) {
      var c = str.charCodeAt(i) - 48;

      r *= mul;

      // 'a'
      if (c >= 49) {
        r += c - 49 + 0xa;

      // 'A'
      } else if (c >= 17) {
        r += c - 17 + 0xa;

      // '0' - '9'
      } else {
        r += c;
      }
    }
    return r;
  }

  BN.prototype._parseBase = function _parseBase (number, base, start) {
    // Initialize as zero
    this.words = [ 0 ];
    this.length = 1;

    // Find length of limb in base
    for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base) {
      limbLen++;
    }
    limbLen--;
    limbPow = (limbPow / base) | 0;

    var total = number.length - start;
    var mod = total % limbLen;
    var end = Math.min(total, total - mod) + start;

    var word = 0;
    for (var i = start; i < end; i += limbLen) {
      word = parseBase(number, i, i + limbLen, base);

      this.imuln(limbPow);
      if (this.words[0] + word < 0x4000000) {
        this.words[0] += word;
      } else {
        this._iaddn(word);
      }
    }

    if (mod !== 0) {
      var pow = 1;
      word = parseBase(number, i, number.length, base);

      for (i = 0; i < mod; i++) {
        pow *= base;
      }

      this.imuln(pow);
      if (this.words[0] + word < 0x4000000) {
        this.words[0] += word;
      } else {
        this._iaddn(word);
      }
    }
  };

  BN.prototype.copy = function copy (dest) {
    dest.words = new Array(this.length);
    for (var i = 0; i < this.length; i++) {
      dest.words[i] = this.words[i];
    }
    dest.length = this.length;
    dest.negative = this.negative;
    dest.red = this.red;
  };

  BN.prototype.clone = function clone () {
    var r = new BN(null);
    this.copy(r);
    return r;
  };

  BN.prototype._expand = function _expand (size) {
    while (this.length < size) {
      this.words[this.length++] = 0;
    }
    return this;
  };

  // Remove leading `0` from `this`
  BN.prototype.strip = function strip () {
    while (this.length > 1 && this.words[this.length - 1] === 0) {
      this.length--;
    }
    return this._normSign();
  };

  BN.prototype._normSign = function _normSign () {
    // -0 = 0
    if (this.length === 1 && this.words[0] === 0) {
      this.negative = 0;
    }
    return this;
  };

  BN.prototype.inspect = function inspect () {
    return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
  };

  /*

  var zeros = [];
  var groupSizes = [];
  var groupBases = [];

  var s = '';
  var i = -1;
  while (++i < BN.wordSize) {
    zeros[i] = s;
    s += '0';
  }
  groupSizes[0] = 0;
  groupSizes[1] = 0;
  groupBases[0] = 0;
  groupBases[1] = 0;
  var base = 2 - 1;
  while (++base < 36 + 1) {
    var groupSize = 0;
    var groupBase = 1;
    while (groupBase < (1 << BN.wordSize) / base) {
      groupBase *= base;
      groupSize += 1;
    }
    groupSizes[base] = groupSize;
    groupBases[base] = groupBase;
  }

  */

  var zeros = [
    '',
    '0',
    '00',
    '000',
    '0000',
    '00000',
    '000000',
    '0000000',
    '00000000',
    '000000000',
    '0000000000',
    '00000000000',
    '000000000000',
    '0000000000000',
    '00000000000000',
    '000000000000000',
    '0000000000000000',
    '00000000000000000',
    '000000000000000000',
    '0000000000000000000',
    '00000000000000000000',
    '000000000000000000000',
    '0000000000000000000000',
    '00000000000000000000000',
    '000000000000000000000000',
    '0000000000000000000000000'
  ];

  var groupSizes = [
    0, 0,
    25, 16, 12, 11, 10, 9, 8,
    8, 7, 7, 7, 7, 6, 6,
    6, 6, 6, 6, 6, 5, 5,
    5, 5, 5, 5, 5, 5, 5,
    5, 5, 5, 5, 5, 5, 5
  ];

  var groupBases = [
    0, 0,
    33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
    43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
    16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
    6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
    24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
  ];

  BN.prototype.toString = function toString (base, padding) {
    base = base || 10;
    padding = padding | 0 || 1;

    var out;
    if (base === 16 || base === 'hex') {
      out = '';
      var off = 0;
      var carry = 0;
      for (var i = 0; i < this.length; i++) {
        var w = this.words[i];
        var word = (((w << off) | carry) & 0xffffff).toString(16);
        carry = (w >>> (24 - off)) & 0xffffff;
        if (carry !== 0 || i !== this.length - 1) {
          out = zeros[6 - word.length] + word + out;
        } else {
          out = word + out;
        }
        off += 2;
        if (off >= 26) {
          off -= 26;
          i--;
        }
      }
      if (carry !== 0) {
        out = carry.toString(16) + out;
      }
      while (out.length % padding !== 0) {
        out = '0' + out;
      }
      if (this.negative !== 0) {
        out = '-' + out;
      }
      return out;
    }

    if (base === (base | 0) && base >= 2 && base <= 36) {
      // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
      var groupSize = groupSizes[base];
      // var groupBase = Math.pow(base, groupSize);
      var groupBase = groupBases[base];
      out = '';
      var c = this.clone();
      c.negative = 0;
      while (!c.isZero()) {
        var r = c.modn(groupBase).toString(base);
        c = c.idivn(groupBase);

        if (!c.isZero()) {
          out = zeros[groupSize - r.length] + r + out;
        } else {
          out = r + out;
        }
      }
      if (this.isZero()) {
        out = '0' + out;
      }
      while (out.length % padding !== 0) {
        out = '0' + out;
      }
      if (this.negative !== 0) {
        out = '-' + out;
      }
      return out;
    }

    assert(false, 'Base should be between 2 and 36');
  };

  BN.prototype.toNumber = function toNumber () {
    var ret = this.words[0];
    if (this.length === 2) {
      ret += this.words[1] * 0x4000000;
    } else if (this.length === 3 && this.words[2] === 0x01) {
      // NOTE: at this stage it is known that the top bit is set
      ret += 0x10000000000000 + (this.words[1] * 0x4000000);
    } else if (this.length > 2) {
      assert(false, 'Number can only safely store up to 53 bits');
    }
    return (this.negative !== 0) ? -ret : ret;
  };

  BN.prototype.toJSON = function toJSON () {
    return this.toString(16);
  };

  BN.prototype.toBuffer = function toBuffer (endian, length) {
    assert(typeof Buffer !== 'undefined');
    return this.toArrayLike(Buffer, endian, length);
  };

  BN.prototype.toArray = function toArray (endian, length) {
    return this.toArrayLike(Array, endian, length);
  };

  BN.prototype.toArrayLike = function toArrayLike (ArrayType, endian, length) {
    var byteLength = this.byteLength();
    var reqLength = length || Math.max(1, byteLength);
    assert(byteLength <= reqLength, 'byte array longer than desired length');
    assert(reqLength > 0, 'Requested array length <= 0');

    this.strip();
    var littleEndian = endian === 'le';
    var res = new ArrayType(reqLength);

    var b, i;
    var q = this.clone();
    if (!littleEndian) {
      // Assume big-endian
      for (i = 0; i < reqLength - byteLength; i++) {
        res[i] = 0;
      }

      for (i = 0; !q.isZero(); i++) {
        b = q.andln(0xff);
        q.iushrn(8);

        res[reqLength - i - 1] = b;
      }
    } else {
      for (i = 0; !q.isZero(); i++) {
        b = q.andln(0xff);
        q.iushrn(8);

        res[i] = b;
      }

      for (; i < reqLength; i++) {
        res[i] = 0;
      }
    }

    return res;
  };

  if (Math.clz32) {
    BN.prototype._countBits = function _countBits (w) {
      return 32 - Math.clz32(w);
    };
  } else {
    BN.prototype._countBits = function _countBits (w) {
      var t = w;
      var r = 0;
      if (t >= 0x1000) {
        r += 13;
        t >>>= 13;
      }
      if (t >= 0x40) {
        r += 7;
        t >>>= 7;
      }
      if (t >= 0x8) {
        r += 4;
        t >>>= 4;
      }
      if (t >= 0x02) {
        r += 2;
        t >>>= 2;
      }
      return r + t;
    };
  }

  BN.prototype._zeroBits = function _zeroBits (w) {
    // Short-cut
    if (w === 0) return 26;

    var t = w;
    var r = 0;
    if ((t & 0x1fff) === 0) {
      r += 13;
      t >>>= 13;
    }
    if ((t & 0x7f) === 0) {
      r += 7;
      t >>>= 7;
    }
    if ((t & 0xf) === 0) {
      r += 4;
      t >>>= 4;
    }
    if ((t & 0x3) === 0) {
      r += 2;
      t >>>= 2;
    }
    if ((t & 0x1) === 0) {
      r++;
    }
    return r;
  };

  // Return number of used bits in a BN
  BN.prototype.bitLength = function bitLength () {
    var w = this.words[this.length - 1];
    var hi = this._countBits(w);
    return (this.length - 1) * 26 + hi;
  };

  function toBitArray (num) {
    var w = new Array(num.bitLength());

    for (var bit = 0; bit < w.length; bit++) {
      var off = (bit / 26) | 0;
      var wbit = bit % 26;

      w[bit] = (num.words[off] & (1 << wbit)) >>> wbit;
    }

    return w;
  }

  // Number of trailing zero bits
  BN.prototype.zeroBits = function zeroBits () {
    if (this.isZero()) return 0;

    var r = 0;
    for (var i = 0; i < this.length; i++) {
      var b = this._zeroBits(this.words[i]);
      r += b;
      if (b !== 26) break;
    }
    return r;
  };

  BN.prototype.byteLength = function byteLength () {
    return Math.ceil(this.bitLength() / 8);
  };

  BN.prototype.toTwos = function toTwos (width) {
    if (this.negative !== 0) {
      return this.abs().inotn(width).iaddn(1);
    }
    return this.clone();
  };

  BN.prototype.fromTwos = function fromTwos (width) {
    if (this.testn(width - 1)) {
      return this.notn(width).iaddn(1).ineg();
    }
    return this.clone();
  };

  BN.prototype.isNeg = function isNeg () {
    return this.negative !== 0;
  };

  // Return negative clone of `this`
  BN.prototype.neg = function neg () {
    return this.clone().ineg();
  };

  BN.prototype.ineg = function ineg () {
    if (!this.isZero()) {
      this.negative ^= 1;
    }

    return this;
  };

  // Or `num` with `this` in-place
  BN.prototype.iuor = function iuor (num) {
    while (this.length < num.length) {
      this.words[this.length++] = 0;
    }

    for (var i = 0; i < num.length; i++) {
      this.words[i] = this.words[i] | num.words[i];
    }

    return this.strip();
  };

  BN.prototype.ior = function ior (num) {
    assert((this.negative | num.negative) === 0);
    return this.iuor(num);
  };

  // Or `num` with `this`
  BN.prototype.or = function or (num) {
    if (this.length > num.length) return this.clone().ior(num);
    return num.clone().ior(this);
  };

  BN.prototype.uor = function uor (num) {
    if (this.length > num.length) return this.clone().iuor(num);
    return num.clone().iuor(this);
  };

  // And `num` with `this` in-place
  BN.prototype.iuand = function iuand (num) {
    // b = min-length(num, this)
    var b;
    if (this.length > num.length) {
      b = num;
    } else {
      b = this;
    }

    for (var i = 0; i < b.length; i++) {
      this.words[i] = this.words[i] & num.words[i];
    }

    this.length = b.length;

    return this.strip();
  };

  BN.prototype.iand = function iand (num) {
    assert((this.negative | num.negative) === 0);
    return this.iuand(num);
  };

  // And `num` with `this`
  BN.prototype.and = function and (num) {
    if (this.length > num.length) return this.clone().iand(num);
    return num.clone().iand(this);
  };

  BN.prototype.uand = function uand (num) {
    if (this.length > num.length) return this.clone().iuand(num);
    return num.clone().iuand(this);
  };

  // Xor `num` with `this` in-place
  BN.prototype.iuxor = function iuxor (num) {
    // a.length > b.length
    var a;
    var b;
    if (this.length > num.length) {
      a = this;
      b = num;
    } else {
      a = num;
      b = this;
    }

    for (var i = 0; i < b.length; i++) {
      this.words[i] = a.words[i] ^ b.words[i];
    }

    if (this !== a) {
      for (; i < a.length; i++) {
        this.words[i] = a.words[i];
      }
    }

    this.length = a.length;

    return this.strip();
  };

  BN.prototype.ixor = function ixor (num) {
    assert((this.negative | num.negative) === 0);
    return this.iuxor(num);
  };

  // Xor `num` with `this`
  BN.prototype.xor = function xor (num) {
    if (this.length > num.length) return this.clone().ixor(num);
    return num.clone().ixor(this);
  };

  BN.prototype.uxor = function uxor (num) {
    if (this.length > num.length) return this.clone().iuxor(num);
    return num.clone().iuxor(this);
  };

  // Not ``this`` with ``width`` bitwidth
  BN.prototype.inotn = function inotn (width) {
    assert(typeof width === 'number' && width >= 0);

    var bytesNeeded = Math.ceil(width / 26) | 0;
    var bitsLeft = width % 26;

    // Extend the buffer with leading zeroes
    this._expand(bytesNeeded);

    if (bitsLeft > 0) {
      bytesNeeded--;
    }

    // Handle complete words
    for (var i = 0; i < bytesNeeded; i++) {
      this.words[i] = ~this.words[i] & 0x3ffffff;
    }

    // Handle the residue
    if (bitsLeft > 0) {
      this.words[i] = ~this.words[i] & (0x3ffffff >> (26 - bitsLeft));
    }

    // And remove leading zeroes
    return this.strip();
  };

  BN.prototype.notn = function notn (width) {
    return this.clone().inotn(width);
  };

  // Set `bit` of `this`
  BN.prototype.setn = function setn (bit, val) {
    assert(typeof bit === 'number' && bit >= 0);

    var off = (bit / 26) | 0;
    var wbit = bit % 26;

    this._expand(off + 1);

    if (val) {
      this.words[off] = this.words[off] | (1 << wbit);
    } else {
      this.words[off] = this.words[off] & ~(1 << wbit);
    }

    return this.strip();
  };

  // Add `num` to `this` in-place
  BN.prototype.iadd = function iadd (num) {
    var r;

    // negative + positive
    if (this.negative !== 0 && num.negative === 0) {
      this.negative = 0;
      r = this.isub(num);
      this.negative ^= 1;
      return this._normSign();

    // positive + negative
    } else if (this.negative === 0 && num.negative !== 0) {
      num.negative = 0;
      r = this.isub(num);
      num.negative = 1;
      return r._normSign();
    }

    // a.length > b.length
    var a, b;
    if (this.length > num.length) {
      a = this;
      b = num;
    } else {
      a = num;
      b = this;
    }

    var carry = 0;
    for (var i = 0; i < b.length; i++) {
      r = (a.words[i] | 0) + (b.words[i] | 0) + carry;
      this.words[i] = r & 0x3ffffff;
      carry = r >>> 26;
    }
    for (; carry !== 0 && i < a.length; i++) {
      r = (a.words[i] | 0) + carry;
      this.words[i] = r & 0x3ffffff;
      carry = r >>> 26;
    }

    this.length = a.length;
    if (carry !== 0) {
      this.words[this.length] = carry;
      this.length++;
    // Copy the rest of the words
    } else if (a !== this) {
      for (; i < a.length; i++) {
        this.words[i] = a.words[i];
      }
    }

    return this;
  };

  // Add `num` to `this`
  BN.prototype.add = function add (num) {
    var res;
    if (num.negative !== 0 && this.negative === 0) {
      num.negative = 0;
      res = this.sub(num);
      num.negative ^= 1;
      return res;
    } else if (num.negative === 0 && this.negative !== 0) {
      this.negative = 0;
      res = num.sub(this);
      this.negative = 1;
      return res;
    }

    if (this.length > num.length) return this.clone().iadd(num);

    return num.clone().iadd(this);
  };

  // Subtract `num` from `this` in-place
  BN.prototype.isub = function isub (num) {
    // this - (-num) = this + num
    if (num.negative !== 0) {
      num.negative = 0;
      var r = this.iadd(num);
      num.negative = 1;
      return r._normSign();

    // -this - num = -(this + num)
    } else if (this.negative !== 0) {
      this.negative = 0;
      this.iadd(num);
      this.negative = 1;
      return this._normSign();
    }

    // At this point both numbers are positive
    var cmp = this.cmp(num);

    // Optimization - zeroify
    if (cmp === 0) {
      this.negative = 0;
      this.length = 1;
      this.words[0] = 0;
      return this;
    }

    // a > b
    var a, b;
    if (cmp > 0) {
      a = this;
      b = num;
    } else {
      a = num;
      b = this;
    }

    var carry = 0;
    for (var i = 0; i < b.length; i++) {
      r = (a.words[i] | 0) - (b.words[i] | 0) + carry;
      carry = r >> 26;
      this.words[i] = r & 0x3ffffff;
    }
    for (; carry !== 0 && i < a.length; i++) {
      r = (a.words[i] | 0) + carry;
      carry = r >> 26;
      this.words[i] = r & 0x3ffffff;
    }

    // Copy rest of the words
    if (carry === 0 && i < a.length && a !== this) {
      for (; i < a.length; i++) {
        this.words[i] = a.words[i];
      }
    }

    this.length = Math.max(this.length, i);

    if (a !== this) {
      this.negative = 1;
    }

    return this.strip();
  };

  // Subtract `num` from `this`
  BN.prototype.sub = function sub (num) {
    return this.clone().isub(num);
  };

  function smallMulTo (self, num, out) {
    out.negative = num.negative ^ self.negative;
    var len = (self.length + num.length) | 0;
    out.length = len;
    len = (len - 1) | 0;

    // Peel one iteration (compiler can't do it, because of code complexity)
    var a = self.words[0] | 0;
    var b = num.words[0] | 0;
    var r = a * b;

    var lo = r & 0x3ffffff;
    var carry = (r / 0x4000000) | 0;
    out.words[0] = lo;

    for (var k = 1; k < len; k++) {
      // Sum all words with the same `i + j = k` and accumulate `ncarry`,
      // note that ncarry could be >= 0x3ffffff
      var ncarry = carry >>> 26;
      var rword = carry & 0x3ffffff;
      var maxJ = Math.min(k, num.length - 1);
      for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) {
        var i = (k - j) | 0;
        a = self.words[i] | 0;
        b = num.words[j] | 0;
        r = a * b + rword;
        ncarry += (r / 0x4000000) | 0;
        rword = r & 0x3ffffff;
      }
      out.words[k] = rword | 0;
      carry = ncarry | 0;
    }
    if (carry !== 0) {
      out.words[k] = carry | 0;
    } else {
      out.length--;
    }

    return out.strip();
  }

  // TODO(indutny): it may be reasonable to omit it for users who don't need
  // to work with 256-bit numbers, otherwise it gives 20% improvement for 256-bit
  // multiplication (like elliptic secp256k1).
  var comb10MulTo = function comb10MulTo (self, num, out) {
    var a = self.words;
    var b = num.words;
    var o = out.words;
    var c = 0;
    var lo;
    var mid;
    var hi;
    var a0 = a[0] | 0;
    var al0 = a0 & 0x1fff;
    var ah0 = a0 >>> 13;
    var a1 = a[1] | 0;
    var al1 = a1 & 0x1fff;
    var ah1 = a1 >>> 13;
    var a2 = a[2] | 0;
    var al2 = a2 & 0x1fff;
    var ah2 = a2 >>> 13;
    var a3 = a[3] | 0;
    var al3 = a3 & 0x1fff;
    var ah3 = a3 >>> 13;
    var a4 = a[4] | 0;
    var al4 = a4 & 0x1fff;
    var ah4 = a4 >>> 13;
    var a5 = a[5] | 0;
    var al5 = a5 & 0x1fff;
    var ah5 = a5 >>> 13;
    var a6 = a[6] | 0;
    var al6 = a6 & 0x1fff;
    var ah6 = a6 >>> 13;
    var a7 = a[7] | 0;
    var al7 = a7 & 0x1fff;
    var ah7 = a7 >>> 13;
    var a8 = a[8] | 0;
    var al8 = a8 & 0x1fff;
    var ah8 = a8 >>> 13;
    var a9 = a[9] | 0;
    var al9 = a9 & 0x1fff;
    var ah9 = a9 >>> 13;
    var b0 = b[0] | 0;
    var bl0 = b0 & 0x1fff;
    var bh0 = b0 >>> 13;
    var b1 = b[1] | 0;
    var bl1 = b1 & 0x1fff;
    var bh1 = b1 >>> 13;
    var b2 = b[2] | 0;
    var bl2 = b2 & 0x1fff;
    var bh2 = b2 >>> 13;
    var b3 = b[3] | 0;
    var bl3 = b3 & 0x1fff;
    var bh3 = b3 >>> 13;
    var b4 = b[4] | 0;
    var bl4 = b4 & 0x1fff;
    var bh4 = b4 >>> 13;
    var b5 = b[5] | 0;
    var bl5 = b5 & 0x1fff;
    var bh5 = b5 >>> 13;
    var b6 = b[6] | 0;
    var bl6 = b6 & 0x1fff;
    var bh6 = b6 >>> 13;
    var b7 = b[7] | 0;
    var bl7 = b7 & 0x1fff;
    var bh7 = b7 >>> 13;
    var b8 = b[8] | 0;
    var bl8 = b8 & 0x1fff;
    var bh8 = b8 >>> 13;
    var b9 = b[9] | 0;
    var bl9 = b9 & 0x1fff;
    var bh9 = b9 >>> 13;

    out.negative = self.negative ^ num.negative;
    out.length = 19;
    /* k = 0 */
    lo = Math.imul(al0, bl0);
    mid = Math.imul(al0, bh0);
    mid = (mid + Math.imul(ah0, bl0)) | 0;
    hi = Math.imul(ah0, bh0);
    var w0 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w0 >>> 26)) | 0;
    w0 &= 0x3ffffff;
    /* k = 1 */
    lo = Math.imul(al1, bl0);
    mid = Math.imul(al1, bh0);
    mid = (mid + Math.imul(ah1, bl0)) | 0;
    hi = Math.imul(ah1, bh0);
    lo = (lo + Math.imul(al0, bl1)) | 0;
    mid = (mid + Math.imul(al0, bh1)) | 0;
    mid = (mid + Math.imul(ah0, bl1)) | 0;
    hi = (hi + Math.imul(ah0, bh1)) | 0;
    var w1 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w1 >>> 26)) | 0;
    w1 &= 0x3ffffff;
    /* k = 2 */
    lo = Math.imul(al2, bl0);
    mid = Math.imul(al2, bh0);
    mid = (mid + Math.imul(ah2, bl0)) | 0;
    hi = Math.imul(ah2, bh0);
    lo = (lo + Math.imul(al1, bl1)) | 0;
    mid = (mid + Math.imul(al1, bh1)) | 0;
    mid = (mid + Math.imul(ah1, bl1)) | 0;
    hi = (hi + Math.imul(ah1, bh1)) | 0;
    lo = (lo + Math.imul(al0, bl2)) | 0;
    mid = (mid + Math.imul(al0, bh2)) | 0;
    mid = (mid + Math.imul(ah0, bl2)) | 0;
    hi = (hi + Math.imul(ah0, bh2)) | 0;
    var w2 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w2 >>> 26)) | 0;
    w2 &= 0x3ffffff;
    /* k = 3 */
    lo = Math.imul(al3, bl0);
    mid = Math.imul(al3, bh0);
    mid = (mid + Math.imul(ah3, bl0)) | 0;
    hi = Math.imul(ah3, bh0);
    lo = (lo + Math.imul(al2, bl1)) | 0;
    mid = (mid + Math.imul(al2, bh1)) | 0;
    mid = (mid + Math.imul(ah2, bl1)) | 0;
    hi = (hi + Math.imul(ah2, bh1)) | 0;
    lo = (lo + Math.imul(al1, bl2)) | 0;
    mid = (mid + Math.imul(al1, bh2)) | 0;
    mid = (mid + Math.imul(ah1, bl2)) | 0;
    hi = (hi + Math.imul(ah1, bh2)) | 0;
    lo = (lo + Math.imul(al0, bl3)) | 0;
    mid = (mid + Math.imul(al0, bh3)) | 0;
    mid = (mid + Math.imul(ah0, bl3)) | 0;
    hi = (hi + Math.imul(ah0, bh3)) | 0;
    var w3 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w3 >>> 26)) | 0;
    w3 &= 0x3ffffff;
    /* k = 4 */
    lo = Math.imul(al4, bl0);
    mid = Math.imul(al4, bh0);
    mid = (mid + Math.imul(ah4, bl0)) | 0;
    hi = Math.imul(ah4, bh0);
    lo = (lo + Math.imul(al3, bl1)) | 0;
    mid = (mid + Math.imul(al3, bh1)) | 0;
    mid = (mid + Math.imul(ah3, bl1)) | 0;
    hi = (hi + Math.imul(ah3, bh1)) | 0;
    lo = (lo + Math.imul(al2, bl2)) | 0;
    mid = (mid + Math.imul(al2, bh2)) | 0;
    mid = (mid + Math.imul(ah2, bl2)) | 0;
    hi = (hi + Math.imul(ah2, bh2)) | 0;
    lo = (lo + Math.imul(al1, bl3)) | 0;
    mid = (mid + Math.imul(al1, bh3)) | 0;
    mid = (mid + Math.imul(ah1, bl3)) | 0;
    hi = (hi + Math.imul(ah1, bh3)) | 0;
    lo = (lo + Math.imul(al0, bl4)) | 0;
    mid = (mid + Math.imul(al0, bh4)) | 0;
    mid = (mid + Math.imul(ah0, bl4)) | 0;
    hi = (hi + Math.imul(ah0, bh4)) | 0;
    var w4 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w4 >>> 26)) | 0;
    w4 &= 0x3ffffff;
    /* k = 5 */
    lo = Math.imul(al5, bl0);
    mid = Math.imul(al5, bh0);
    mid = (mid + Math.imul(ah5, bl0)) | 0;
    hi = Math.imul(ah5, bh0);
    lo = (lo + Math.imul(al4, bl1)) | 0;
    mid = (mid + Math.imul(al4, bh1)) | 0;
    mid = (mid + Math.imul(ah4, bl1)) | 0;
    hi = (hi + Math.imul(ah4, bh1)) | 0;
    lo = (lo + Math.imul(al3, bl2)) | 0;
    mid = (mid + Math.imul(al3, bh2)) | 0;
    mid = (mid + Math.imul(ah3, bl2)) | 0;
    hi = (hi + Math.imul(ah3, bh2)) | 0;
    lo = (lo + Math.imul(al2, bl3)) | 0;
    mid = (mid + Math.imul(al2, bh3)) | 0;
    mid = (mid + Math.imul(ah2, bl3)) | 0;
    hi = (hi + Math.imul(ah2, bh3)) | 0;
    lo = (lo + Math.imul(al1, bl4)) | 0;
    mid = (mid + Math.imul(al1, bh4)) | 0;
    mid = (mid + Math.imul(ah1, bl4)) | 0;
    hi = (hi + Math.imul(ah1, bh4)) | 0;
    lo = (lo + Math.imul(al0, bl5)) | 0;
    mid = (mid + Math.imul(al0, bh5)) | 0;
    mid = (mid + Math.imul(ah0, bl5)) | 0;
    hi = (hi + Math.imul(ah0, bh5)) | 0;
    var w5 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w5 >>> 26)) | 0;
    w5 &= 0x3ffffff;
    /* k = 6 */
    lo = Math.imul(al6, bl0);
    mid = Math.imul(al6, bh0);
    mid = (mid + Math.imul(ah6, bl0)) | 0;
    hi = Math.imul(ah6, bh0);
    lo = (lo + Math.imul(al5, bl1)) | 0;
    mid = (mid + Math.imul(al5, bh1)) | 0;
    mid = (mid + Math.imul(ah5, bl1)) | 0;
    hi = (hi + Math.imul(ah5, bh1)) | 0;
    lo = (lo + Math.imul(al4, bl2)) | 0;
    mid = (mid + Math.imul(al4, bh2)) | 0;
    mid = (mid + Math.imul(ah4, bl2)) | 0;
    hi = (hi + Math.imul(ah4, bh2)) | 0;
    lo = (lo + Math.imul(al3, bl3)) | 0;
    mid = (mid + Math.imul(al3, bh3)) | 0;
    mid = (mid + Math.imul(ah3, bl3)) | 0;
    hi = (hi + Math.imul(ah3, bh3)) | 0;
    lo = (lo + Math.imul(al2, bl4)) | 0;
    mid = (mid + Math.imul(al2, bh4)) | 0;
    mid = (mid + Math.imul(ah2, bl4)) | 0;
    hi = (hi + Math.imul(ah2, bh4)) | 0;
    lo = (lo + Math.imul(al1, bl5)) | 0;
    mid = (mid + Math.imul(al1, bh5)) | 0;
    mid = (mid + Math.imul(ah1, bl5)) | 0;
    hi = (hi + Math.imul(ah1, bh5)) | 0;
    lo = (lo + Math.imul(al0, bl6)) | 0;
    mid = (mid + Math.imul(al0, bh6)) | 0;
    mid = (mid + Math.imul(ah0, bl6)) | 0;
    hi = (hi + Math.imul(ah0, bh6)) | 0;
    var w6 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w6 >>> 26)) | 0;
    w6 &= 0x3ffffff;
    /* k = 7 */
    lo = Math.imul(al7, bl0);
    mid = Math.imul(al7, bh0);
    mid = (mid + Math.imul(ah7, bl0)) | 0;
    hi = Math.imul(ah7, bh0);
    lo = (lo + Math.imul(al6, bl1)) | 0;
    mid = (mid + Math.imul(al6, bh1)) | 0;
    mid = (mid + Math.imul(ah6, bl1)) | 0;
    hi = (hi + Math.imul(ah6, bh1)) | 0;
    lo = (lo + Math.imul(al5, bl2)) | 0;
    mid = (mid + Math.imul(al5, bh2)) | 0;
    mid = (mid + Math.imul(ah5, bl2)) | 0;
    hi = (hi + Math.imul(ah5, bh2)) | 0;
    lo = (lo + Math.imul(al4, bl3)) | 0;
    mid = (mid + Math.imul(al4, bh3)) | 0;
    mid = (mid + Math.imul(ah4, bl3)) | 0;
    hi = (hi + Math.imul(ah4, bh3)) | 0;
    lo = (lo + Math.imul(al3, bl4)) | 0;
    mid = (mid + Math.imul(al3, bh4)) | 0;
    mid = (mid + Math.imul(ah3, bl4)) | 0;
    hi = (hi + Math.imul(ah3, bh4)) | 0;
    lo = (lo + Math.imul(al2, bl5)) | 0;
    mid = (mid + Math.imul(al2, bh5)) | 0;
    mid = (mid + Math.imul(ah2, bl5)) | 0;
    hi = (hi + Math.imul(ah2, bh5)) | 0;
    lo = (lo + Math.imul(al1, bl6)) | 0;
    mid = (mid + Math.imul(al1, bh6)) | 0;
    mid = (mid + Math.imul(ah1, bl6)) | 0;
    hi = (hi + Math.imul(ah1, bh6)) | 0;
    lo = (lo + Math.imul(al0, bl7)) | 0;
    mid = (mid + Math.imul(al0, bh7)) | 0;
    mid = (mid + Math.imul(ah0, bl7)) | 0;
    hi = (hi + Math.imul(ah0, bh7)) | 0;
    var w7 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w7 >>> 26)) | 0;
    w7 &= 0x3ffffff;
    /* k = 8 */
    lo = Math.imul(al8, bl0);
    mid = Math.imul(al8, bh0);
    mid = (mid + Math.imul(ah8, bl0)) | 0;
    hi = Math.imul(ah8, bh0);
    lo = (lo + Math.imul(al7, bl1)) | 0;
    mid = (mid + Math.imul(al7, bh1)) | 0;
    mid = (mid + Math.imul(ah7, bl1)) | 0;
    hi = (hi + Math.imul(ah7, bh1)) | 0;
    lo = (lo + Math.imul(al6, bl2)) | 0;
    mid = (mid + Math.imul(al6, bh2)) | 0;
    mid = (mid + Math.imul(ah6, bl2)) | 0;
    hi = (hi + Math.imul(ah6, bh2)) | 0;
    lo = (lo + Math.imul(al5, bl3)) | 0;
    mid = (mid + Math.imul(al5, bh3)) | 0;
    mid = (mid + Math.imul(ah5, bl3)) | 0;
    hi = (hi + Math.imul(ah5, bh3)) | 0;
    lo = (lo + Math.imul(al4, bl4)) | 0;
    mid = (mid + Math.imul(al4, bh4)) | 0;
    mid = (mid + Math.imul(ah4, bl4)) | 0;
    hi = (hi + Math.imul(ah4, bh4)) | 0;
    lo = (lo + Math.imul(al3, bl5)) | 0;
    mid = (mid + Math.imul(al3, bh5)) | 0;
    mid = (mid + Math.imul(ah3, bl5)) | 0;
    hi = (hi + Math.imul(ah3, bh5)) | 0;
    lo = (lo + Math.imul(al2, bl6)) | 0;
    mid = (mid + Math.imul(al2, bh6)) | 0;
    mid = (mid + Math.imul(ah2, bl6)) | 0;
    hi = (hi + Math.imul(ah2, bh6)) | 0;
    lo = (lo + Math.imul(al1, bl7)) | 0;
    mid = (mid + Math.imul(al1, bh7)) | 0;
    mid = (mid + Math.imul(ah1, bl7)) | 0;
    hi = (hi + Math.imul(ah1, bh7)) | 0;
    lo = (lo + Math.imul(al0, bl8)) | 0;
    mid = (mid + Math.imul(al0, bh8)) | 0;
    mid = (mid + Math.imul(ah0, bl8)) | 0;
    hi = (hi + Math.imul(ah0, bh8)) | 0;
    var w8 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w8 >>> 26)) | 0;
    w8 &= 0x3ffffff;
    /* k = 9 */
    lo = Math.imul(al9, bl0);
    mid = Math.imul(al9, bh0);
    mid = (mid + Math.imul(ah9, bl0)) | 0;
    hi = Math.imul(ah9, bh0);
    lo = (lo + Math.imul(al8, bl1)) | 0;
    mid = (mid + Math.imul(al8, bh1)) | 0;
    mid = (mid + Math.imul(ah8, bl1)) | 0;
    hi = (hi + Math.imul(ah8, bh1)) | 0;
    lo = (lo + Math.imul(al7, bl2)) | 0;
    mid = (mid + Math.imul(al7, bh2)) | 0;
    mid = (mid + Math.imul(ah7, bl2)) | 0;
    hi = (hi + Math.imul(ah7, bh2)) | 0;
    lo = (lo + Math.imul(al6, bl3)) | 0;
    mid = (mid + Math.imul(al6, bh3)) | 0;
    mid = (mid + Math.imul(ah6, bl3)) | 0;
    hi = (hi + Math.imul(ah6, bh3)) | 0;
    lo = (lo + Math.imul(al5, bl4)) | 0;
    mid = (mid + Math.imul(al5, bh4)) | 0;
    mid = (mid + Math.imul(ah5, bl4)) | 0;
    hi = (hi + Math.imul(ah5, bh4)) | 0;
    lo = (lo + Math.imul(al4, bl5)) | 0;
    mid = (mid + Math.imul(al4, bh5)) | 0;
    mid = (mid + Math.imul(ah4, bl5)) | 0;
    hi = (hi + Math.imul(ah4, bh5)) | 0;
    lo = (lo + Math.imul(al3, bl6)) | 0;
    mid = (mid + Math.imul(al3, bh6)) | 0;
    mid = (mid + Math.imul(ah3, bl6)) | 0;
    hi = (hi + Math.imul(ah3, bh6)) | 0;
    lo = (lo + Math.imul(al2, bl7)) | 0;
    mid = (mid + Math.imul(al2, bh7)) | 0;
    mid = (mid + Math.imul(ah2, bl7)) | 0;
    hi = (hi + Math.imul(ah2, bh7)) | 0;
    lo = (lo + Math.imul(al1, bl8)) | 0;
    mid = (mid + Math.imul(al1, bh8)) | 0;
    mid = (mid + Math.imul(ah1, bl8)) | 0;
    hi = (hi + Math.imul(ah1, bh8)) | 0;
    lo = (lo + Math.imul(al0, bl9)) | 0;
    mid = (mid + Math.imul(al0, bh9)) | 0;
    mid = (mid + Math.imul(ah0, bl9)) | 0;
    hi = (hi + Math.imul(ah0, bh9)) | 0;
    var w9 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w9 >>> 26)) | 0;
    w9 &= 0x3ffffff;
    /* k = 10 */
    lo = Math.imul(al9, bl1);
    mid = Math.imul(al9, bh1);
    mid = (mid + Math.imul(ah9, bl1)) | 0;
    hi = Math.imul(ah9, bh1);
    lo = (lo + Math.imul(al8, bl2)) | 0;
    mid = (mid + Math.imul(al8, bh2)) | 0;
    mid = (mid + Math.imul(ah8, bl2)) | 0;
    hi = (hi + Math.imul(ah8, bh2)) | 0;
    lo = (lo + Math.imul(al7, bl3)) | 0;
    mid = (mid + Math.imul(al7, bh3)) | 0;
    mid = (mid + Math.imul(ah7, bl3)) | 0;
    hi = (hi + Math.imul(ah7, bh3)) | 0;
    lo = (lo + Math.imul(al6, bl4)) | 0;
    mid = (mid + Math.imul(al6, bh4)) | 0;
    mid = (mid + Math.imul(ah6, bl4)) | 0;
    hi = (hi + Math.imul(ah6, bh4)) | 0;
    lo = (lo + Math.imul(al5, bl5)) | 0;
    mid = (mid + Math.imul(al5, bh5)) | 0;
    mid = (mid + Math.imul(ah5, bl5)) | 0;
    hi = (hi + Math.imul(ah5, bh5)) | 0;
    lo = (lo + Math.imul(al4, bl6)) | 0;
    mid = (mid + Math.imul(al4, bh6)) | 0;
    mid = (mid + Math.imul(ah4, bl6)) | 0;
    hi = (hi + Math.imul(ah4, bh6)) | 0;
    lo = (lo + Math.imul(al3, bl7)) | 0;
    mid = (mid + Math.imul(al3, bh7)) | 0;
    mid = (mid + Math.imul(ah3, bl7)) | 0;
    hi = (hi + Math.imul(ah3, bh7)) | 0;
    lo = (lo + Math.imul(al2, bl8)) | 0;
    mid = (mid + Math.imul(al2, bh8)) | 0;
    mid = (mid + Math.imul(ah2, bl8)) | 0;
    hi = (hi + Math.imul(ah2, bh8)) | 0;
    lo = (lo + Math.imul(al1, bl9)) | 0;
    mid = (mid + Math.imul(al1, bh9)) | 0;
    mid = (mid + Math.imul(ah1, bl9)) | 0;
    hi = (hi + Math.imul(ah1, bh9)) | 0;
    var w10 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w10 >>> 26)) | 0;
    w10 &= 0x3ffffff;
    /* k = 11 */
    lo = Math.imul(al9, bl2);
    mid = Math.imul(al9, bh2);
    mid = (mid + Math.imul(ah9, bl2)) | 0;
    hi = Math.imul(ah9, bh2);
    lo = (lo + Math.imul(al8, bl3)) | 0;
    mid = (mid + Math.imul(al8, bh3)) | 0;
    mid = (mid + Math.imul(ah8, bl3)) | 0;
    hi = (hi + Math.imul(ah8, bh3)) | 0;
    lo = (lo + Math.imul(al7, bl4)) | 0;
    mid = (mid + Math.imul(al7, bh4)) | 0;
    mid = (mid + Math.imul(ah7, bl4)) | 0;
    hi = (hi + Math.imul(ah7, bh4)) | 0;
    lo = (lo + Math.imul(al6, bl5)) | 0;
    mid = (mid + Math.imul(al6, bh5)) | 0;
    mid = (mid + Math.imul(ah6, bl5)) | 0;
    hi = (hi + Math.imul(ah6, bh5)) | 0;
    lo = (lo + Math.imul(al5, bl6)) | 0;
    mid = (mid + Math.imul(al5, bh6)) | 0;
    mid = (mid + Math.imul(ah5, bl6)) | 0;
    hi = (hi + Math.imul(ah5, bh6)) | 0;
    lo = (lo + Math.imul(al4, bl7)) | 0;
    mid = (mid + Math.imul(al4, bh7)) | 0;
    mid = (mid + Math.imul(ah4, bl7)) | 0;
    hi = (hi + Math.imul(ah4, bh7)) | 0;
    lo = (lo + Math.imul(al3, bl8)) | 0;
    mid = (mid + Math.imul(al3, bh8)) | 0;
    mid = (mid + Math.imul(ah3, bl8)) | 0;
    hi = (hi + Math.imul(ah3, bh8)) | 0;
    lo = (lo + Math.imul(al2, bl9)) | 0;
    mid = (mid + Math.imul(al2, bh9)) | 0;
    mid = (mid + Math.imul(ah2, bl9)) | 0;
    hi = (hi + Math.imul(ah2, bh9)) | 0;
    var w11 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w11 >>> 26)) | 0;
    w11 &= 0x3ffffff;
    /* k = 12 */
    lo = Math.imul(al9, bl3);
    mid = Math.imul(al9, bh3);
    mid = (mid + Math.imul(ah9, bl3)) | 0;
    hi = Math.imul(ah9, bh3);
    lo = (lo + Math.imul(al8, bl4)) | 0;
    mid = (mid + Math.imul(al8, bh4)) | 0;
    mid = (mid + Math.imul(ah8, bl4)) | 0;
    hi = (hi + Math.imul(ah8, bh4)) | 0;
    lo = (lo + Math.imul(al7, bl5)) | 0;
    mid = (mid + Math.imul(al7, bh5)) | 0;
    mid = (mid + Math.imul(ah7, bl5)) | 0;
    hi = (hi + Math.imul(ah7, bh5)) | 0;
    lo = (lo + Math.imul(al6, bl6)) | 0;
    mid = (mid + Math.imul(al6, bh6)) | 0;
    mid = (mid + Math.imul(ah6, bl6)) | 0;
    hi = (hi + Math.imul(ah6, bh6)) | 0;
    lo = (lo + Math.imul(al5, bl7)) | 0;
    mid = (mid + Math.imul(al5, bh7)) | 0;
    mid = (mid + Math.imul(ah5, bl7)) | 0;
    hi = (hi + Math.imul(ah5, bh7)) | 0;
    lo = (lo + Math.imul(al4, bl8)) | 0;
    mid = (mid + Math.imul(al4, bh8)) | 0;
    mid = (mid + Math.imul(ah4, bl8)) | 0;
    hi = (hi + Math.imul(ah4, bh8)) | 0;
    lo = (lo + Math.imul(al3, bl9)) | 0;
    mid = (mid + Math.imul(al3, bh9)) | 0;
    mid = (mid + Math.imul(ah3, bl9)) | 0;
    hi = (hi + Math.imul(ah3, bh9)) | 0;
    var w12 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w12 >>> 26)) | 0;
    w12 &= 0x3ffffff;
    /* k = 13 */
    lo = Math.imul(al9, bl4);
    mid = Math.imul(al9, bh4);
    mid = (mid + Math.imul(ah9, bl4)) | 0;
    hi = Math.imul(ah9, bh4);
    lo = (lo + Math.imul(al8, bl5)) | 0;
    mid = (mid + Math.imul(al8, bh5)) | 0;
    mid = (mid + Math.imul(ah8, bl5)) | 0;
    hi = (hi + Math.imul(ah8, bh5)) | 0;
    lo = (lo + Math.imul(al7, bl6)) | 0;
    mid = (mid + Math.imul(al7, bh6)) | 0;
    mid = (mid + Math.imul(ah7, bl6)) | 0;
    hi = (hi + Math.imul(ah7, bh6)) | 0;
    lo = (lo + Math.imul(al6, bl7)) | 0;
    mid = (mid + Math.imul(al6, bh7)) | 0;
    mid = (mid + Math.imul(ah6, bl7)) | 0;
    hi = (hi + Math.imul(ah6, bh7)) | 0;
    lo = (lo + Math.imul(al5, bl8)) | 0;
    mid = (mid + Math.imul(al5, bh8)) | 0;
    mid = (mid + Math.imul(ah5, bl8)) | 0;
    hi = (hi + Math.imul(ah5, bh8)) | 0;
    lo = (lo + Math.imul(al4, bl9)) | 0;
    mid = (mid + Math.imul(al4, bh9)) | 0;
    mid = (mid + Math.imul(ah4, bl9)) | 0;
    hi = (hi + Math.imul(ah4, bh9)) | 0;
    var w13 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w13 >>> 26)) | 0;
    w13 &= 0x3ffffff;
    /* k = 14 */
    lo = Math.imul(al9, bl5);
    mid = Math.imul(al9, bh5);
    mid = (mid + Math.imul(ah9, bl5)) | 0;
    hi = Math.imul(ah9, bh5);
    lo = (lo + Math.imul(al8, bl6)) | 0;
    mid = (mid + Math.imul(al8, bh6)) | 0;
    mid = (mid + Math.imul(ah8, bl6)) | 0;
    hi = (hi + Math.imul(ah8, bh6)) | 0;
    lo = (lo + Math.imul(al7, bl7)) | 0;
    mid = (mid + Math.imul(al7, bh7)) | 0;
    mid = (mid + Math.imul(ah7, bl7)) | 0;
    hi = (hi + Math.imul(ah7, bh7)) | 0;
    lo = (lo + Math.imul(al6, bl8)) | 0;
    mid = (mid + Math.imul(al6, bh8)) | 0;
    mid = (mid + Math.imul(ah6, bl8)) | 0;
    hi = (hi + Math.imul(ah6, bh8)) | 0;
    lo = (lo + Math.imul(al5, bl9)) | 0;
    mid = (mid + Math.imul(al5, bh9)) | 0;
    mid = (mid + Math.imul(ah5, bl9)) | 0;
    hi = (hi + Math.imul(ah5, bh9)) | 0;
    var w14 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w14 >>> 26)) | 0;
    w14 &= 0x3ffffff;
    /* k = 15 */
    lo = Math.imul(al9, bl6);
    mid = Math.imul(al9, bh6);
    mid = (mid + Math.imul(ah9, bl6)) | 0;
    hi = Math.imul(ah9, bh6);
    lo = (lo + Math.imul(al8, bl7)) | 0;
    mid = (mid + Math.imul(al8, bh7)) | 0;
    mid = (mid + Math.imul(ah8, bl7)) | 0;
    hi = (hi + Math.imul(ah8, bh7)) | 0;
    lo = (lo + Math.imul(al7, bl8)) | 0;
    mid = (mid + Math.imul(al7, bh8)) | 0;
    mid = (mid + Math.imul(ah7, bl8)) | 0;
    hi = (hi + Math.imul(ah7, bh8)) | 0;
    lo = (lo + Math.imul(al6, bl9)) | 0;
    mid = (mid + Math.imul(al6, bh9)) | 0;
    mid = (mid + Math.imul(ah6, bl9)) | 0;
    hi = (hi + Math.imul(ah6, bh9)) | 0;
    var w15 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w15 >>> 26)) | 0;
    w15 &= 0x3ffffff;
    /* k = 16 */
    lo = Math.imul(al9, bl7);
    mid = Math.imul(al9, bh7);
    mid = (mid + Math.imul(ah9, bl7)) | 0;
    hi = Math.imul(ah9, bh7);
    lo = (lo + Math.imul(al8, bl8)) | 0;
    mid = (mid + Math.imul(al8, bh8)) | 0;
    mid = (mid + Math.imul(ah8, bl8)) | 0;
    hi = (hi + Math.imul(ah8, bh8)) | 0;
    lo = (lo + Math.imul(al7, bl9)) | 0;
    mid = (mid + Math.imul(al7, bh9)) | 0;
    mid = (mid + Math.imul(ah7, bl9)) | 0;
    hi = (hi + Math.imul(ah7, bh9)) | 0;
    var w16 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w16 >>> 26)) | 0;
    w16 &= 0x3ffffff;
    /* k = 17 */
    lo = Math.imul(al9, bl8);
    mid = Math.imul(al9, bh8);
    mid = (mid + Math.imul(ah9, bl8)) | 0;
    hi = Math.imul(ah9, bh8);
    lo = (lo + Math.imul(al8, bl9)) | 0;
    mid = (mid + Math.imul(al8, bh9)) | 0;
    mid = (mid + Math.imul(ah8, bl9)) | 0;
    hi = (hi + Math.imul(ah8, bh9)) | 0;
    var w17 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w17 >>> 26)) | 0;
    w17 &= 0x3ffffff;
    /* k = 18 */
    lo = Math.imul(al9, bl9);
    mid = Math.imul(al9, bh9);
    mid = (mid + Math.imul(ah9, bl9)) | 0;
    hi = Math.imul(ah9, bh9);
    var w18 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w18 >>> 26)) | 0;
    w18 &= 0x3ffffff;
    o[0] = w0;
    o[1] = w1;
    o[2] = w2;
    o[3] = w3;
    o[4] = w4;
    o[5] = w5;
    o[6] = w6;
    o[7] = w7;
    o[8] = w8;
    o[9] = w9;
    o[10] = w10;
    o[11] = w11;
    o[12] = w12;
    o[13] = w13;
    o[14] = w14;
    o[15] = w15;
    o[16] = w16;
    o[17] = w17;
    o[18] = w18;
    if (c !== 0) {
      o[19] = c;
      out.length++;
    }
    return out;
  };

  // Polyfill comb
  if (!Math.imul) {
    comb10MulTo = smallMulTo;
  }

  function bigMulTo (self, num, out) {
    out.negative = num.negative ^ self.negative;
    out.length = self.length + num.length;

    var carry = 0;
    var hncarry = 0;
    for (var k = 0; k < out.length - 1; k++) {
      // Sum all words with the same `i + j = k` and accumulate `ncarry`,
      // note that ncarry could be >= 0x3ffffff
      var ncarry = hncarry;
      hncarry = 0;
      var rword = carry & 0x3ffffff;
      var maxJ = Math.min(k, num.length - 1);
      for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) {
        var i = k - j;
        var a = self.words[i] | 0;
        var b = num.words[j] | 0;
        var r = a * b;

        var lo = r & 0x3ffffff;
        ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
        lo = (lo + rword) | 0;
        rword = lo & 0x3ffffff;
        ncarry = (ncarry + (lo >>> 26)) | 0;

        hncarry += ncarry >>> 26;
        ncarry &= 0x3ffffff;
      }
      out.words[k] = rword;
      carry = ncarry;
      ncarry = hncarry;
    }
    if (carry !== 0) {
      out.words[k] = carry;
    } else {
      out.length--;
    }

    return out.strip();
  }

  function jumboMulTo (self, num, out) {
    var fftm = new FFTM();
    return fftm.mulp(self, num, out);
  }

  BN.prototype.mulTo = function mulTo (num, out) {
    var res;
    var len = this.length + num.length;
    if (this.length === 10 && num.length === 10) {
      res = comb10MulTo(this, num, out);
    } else if (len < 63) {
      res = smallMulTo(this, num, out);
    } else if (len < 1024) {
      res = bigMulTo(this, num, out);
    } else {
      res = jumboMulTo(this, num, out);
    }

    return res;
  };

  // Cooley-Tukey algorithm for FFT
  // slightly revisited to rely on looping instead of recursion

  function FFTM (x, y) {
    this.x = x;
    this.y = y;
  }

  FFTM.prototype.makeRBT = function makeRBT (N) {
    var t = new Array(N);
    var l = BN.prototype._countBits(N) - 1;
    for (var i = 0; i < N; i++) {
      t[i] = this.revBin(i, l, N);
    }

    return t;
  };

  // Returns binary-reversed representation of `x`
  FFTM.prototype.revBin = function revBin (x, l, N) {
    if (x === 0 || x === N - 1) return x;

    var rb = 0;
    for (var i = 0; i < l; i++) {
      rb |= (x & 1) << (l - i - 1);
      x >>= 1;
    }

    return rb;
  };

  // Performs "tweedling" phase, therefore 'emulating'
  // behaviour of the recursive algorithm
  FFTM.prototype.permute = function permute (rbt, rws, iws, rtws, itws, N) {
    for (var i = 0; i < N; i++) {
      rtws[i] = rws[rbt[i]];
      itws[i] = iws[rbt[i]];
    }
  };

  FFTM.prototype.transform = function transform (rws, iws, rtws, itws, N, rbt) {
    this.permute(rbt, rws, iws, rtws, itws, N);

    for (var s = 1; s < N; s <<= 1) {
      var l = s << 1;

      var rtwdf = Math.cos(2 * Math.PI / l);
      var itwdf = Math.sin(2 * Math.PI / l);

      for (var p = 0; p < N; p += l) {
        var rtwdf_ = rtwdf;
        var itwdf_ = itwdf;

        for (var j = 0; j < s; j++) {
          var re = rtws[p + j];
          var ie = itws[p + j];

          var ro = rtws[p + j + s];
          var io = itws[p + j + s];

          var rx = rtwdf_ * ro - itwdf_ * io;

          io = rtwdf_ * io + itwdf_ * ro;
          ro = rx;

          rtws[p + j] = re + ro;
          itws[p + j] = ie + io;

          rtws[p + j + s] = re - ro;
          itws[p + j + s] = ie - io;

          /* jshint maxdepth : false */
          if (j !== l) {
            rx = rtwdf * rtwdf_ - itwdf * itwdf_;

            itwdf_ = rtwdf * itwdf_ + itwdf * rtwdf_;
            rtwdf_ = rx;
          }
        }
      }
    }
  };

  FFTM.prototype.guessLen13b = function guessLen13b (n, m) {
    var N = Math.max(m, n) | 1;
    var odd = N & 1;
    var i = 0;
    for (N = N / 2 | 0; N; N = N >>> 1) {
      i++;
    }

    return 1 << i + 1 + odd;
  };

  FFTM.prototype.conjugate = function conjugate (rws, iws, N) {
    if (N <= 1) return;

    for (var i = 0; i < N / 2; i++) {
      var t = rws[i];

      rws[i] = rws[N - i - 1];
      rws[N - i - 1] = t;

      t = iws[i];

      iws[i] = -iws[N - i - 1];
      iws[N - i - 1] = -t;
    }
  };

  FFTM.prototype.normalize13b = function normalize13b (ws, N) {
    var carry = 0;
    for (var i = 0; i < N / 2; i++) {
      var w = Math.round(ws[2 * i + 1] / N) * 0x2000 +
        Math.round(ws[2 * i] / N) +
        carry;

      ws[i] = w & 0x3ffffff;

      if (w < 0x4000000) {
        carry = 0;
      } else {
        carry = w / 0x4000000 | 0;
      }
    }

    return ws;
  };

  FFTM.prototype.convert13b = function convert13b (ws, len, rws, N) {
    var carry = 0;
    for (var i = 0; i < len; i++) {
      carry = carry + (ws[i] | 0);

      rws[2 * i] = carry & 0x1fff; carry = carry >>> 13;
      rws[2 * i + 1] = carry & 0x1fff; carry = carry >>> 13;
    }

    // Pad with zeroes
    for (i = 2 * len; i < N; ++i) {
      rws[i] = 0;
    }

    assert(carry === 0);
    assert((carry & ~0x1fff) === 0);
  };

  FFTM.prototype.stub = function stub (N) {
    var ph = new Array(N);
    for (var i = 0; i < N; i++) {
      ph[i] = 0;
    }

    return ph;
  };

  FFTM.prototype.mulp = function mulp (x, y, out) {
    var N = 2 * this.guessLen13b(x.length, y.length);

    var rbt = this.makeRBT(N);

    var _ = this.stub(N);

    var rws = new Array(N);
    var rwst = new Array(N);
    var iwst = new Array(N);

    var nrws = new Array(N);
    var nrwst = new Array(N);
    var niwst = new Array(N);

    var rmws = out.words;
    rmws.length = N;

    this.convert13b(x.words, x.length, rws, N);
    this.convert13b(y.words, y.length, nrws, N);

    this.transform(rws, _, rwst, iwst, N, rbt);
    this.transform(nrws, _, nrwst, niwst, N, rbt);

    for (var i = 0; i < N; i++) {
      var rx = rwst[i] * nrwst[i] - iwst[i] * niwst[i];
      iwst[i] = rwst[i] * niwst[i] + iwst[i] * nrwst[i];
      rwst[i] = rx;
    }

    this.conjugate(rwst, iwst, N);
    this.transform(rwst, iwst, rmws, _, N, rbt);
    this.conjugate(rmws, _, N);
    this.normalize13b(rmws, N);

    out.negative = x.negative ^ y.negative;
    out.length = x.length + y.length;
    return out.strip();
  };

  // Multiply `this` by `num`
  BN.prototype.mul = function mul (num) {
    var out = new BN(null);
    out.words = new Array(this.length + num.length);
    return this.mulTo(num, out);
  };

  // Multiply employing FFT
  BN.prototype.mulf = function mulf (num) {
    var out = new BN(null);
    out.words = new Array(this.length + num.length);
    return jumboMulTo(this, num, out);
  };

  // In-place Multiplication
  BN.prototype.imul = function imul (num) {
    return this.clone().mulTo(num, this);
  };

  BN.prototype.imuln = function imuln (num) {
    assert(typeof num === 'number');
    assert(num < 0x4000000);

    // Carry
    var carry = 0;
    for (var i = 0; i < this.length; i++) {
      var w = (this.words[i] | 0) * num;
      var lo = (w & 0x3ffffff) + (carry & 0x3ffffff);
      carry >>= 26;
      carry += (w / 0x4000000) | 0;
      // NOTE: lo is 27bit maximum
      carry += lo >>> 26;
      this.words[i] = lo & 0x3ffffff;
    }

    if (carry !== 0) {
      this.words[i] = carry;
      this.length++;
    }

    return this;
  };

  BN.prototype.muln = function muln (num) {
    return this.clone().imuln(num);
  };

  // `this` * `this`
  BN.prototype.sqr = function sqr () {
    return this.mul(this);
  };

  // `this` * `this` in-place
  BN.prototype.isqr = function isqr () {
    return this.imul(this.clone());
  };

  // Math.pow(`this`, `num`)
  BN.prototype.pow = function pow (num) {
    var w = toBitArray(num);
    if (w.length === 0) return new BN(1);

    // Skip leading zeroes
    var res = this;
    for (var i = 0; i < w.length; i++, res = res.sqr()) {
      if (w[i] !== 0) break;
    }

    if (++i < w.length) {
      for (var q = res.sqr(); i < w.length; i++, q = q.sqr()) {
        if (w[i] === 0) continue;

        res = res.mul(q);
      }
    }

    return res;
  };

  // Shift-left in-place
  BN.prototype.iushln = function iushln (bits) {
    assert(typeof bits === 'number' && bits >= 0);
    var r = bits % 26;
    var s = (bits - r) / 26;
    var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r);
    var i;

    if (r !== 0) {
      var carry = 0;

      for (i = 0; i < this.length; i++) {
        var newCarry = this.words[i] & carryMask;
        var c = ((this.words[i] | 0) - newCarry) << r;
        this.words[i] = c | carry;
        carry = newCarry >>> (26 - r);
      }

      if (carry) {
        this.words[i] = carry;
        this.length++;
      }
    }

    if (s !== 0) {
      for (i = this.length - 1; i >= 0; i--) {
        this.words[i + s] = this.words[i];
      }

      for (i = 0; i < s; i++) {
        this.words[i] = 0;
      }

      this.length += s;
    }

    return this.strip();
  };

  BN.prototype.ishln = function ishln (bits) {
    // TODO(indutny): implement me
    assert(this.negative === 0);
    return this.iushln(bits);
  };

  // Shift-right in-place
  // NOTE: `hint` is a lowest bit before trailing zeroes
  // NOTE: if `extended` is present - it will be filled with destroyed bits
  BN.prototype.iushrn = function iushrn (bits, hint, extended) {
    assert(typeof bits === 'number' && bits >= 0);
    var h;
    if (hint) {
      h = (hint - (hint % 26)) / 26;
    } else {
      h = 0;
    }

    var r = bits % 26;
    var s = Math.min((bits - r) / 26, this.length);
    var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
    var maskedWords = extended;

    h -= s;
    h = Math.max(0, h);

    // Extended mode, copy masked part
    if (maskedWords) {
      for (var i = 0; i < s; i++) {
        maskedWords.words[i] = this.words[i];
      }
      maskedWords.length = s;
    }

    if (s === 0) {
      // No-op, we should not move anything at all
    } else if (this.length > s) {
      this.length -= s;
      for (i = 0; i < this.length; i++) {
        this.words[i] = this.words[i + s];
      }
    } else {
      this.words[0] = 0;
      this.length = 1;
    }

    var carry = 0;
    for (i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) {
      var word = this.words[i] | 0;
      this.words[i] = (carry << (26 - r)) | (word >>> r);
      carry = word & mask;
    }

    // Push carried bits as a mask
    if (maskedWords && carry !== 0) {
      maskedWords.words[maskedWords.length++] = carry;
    }

    if (this.length === 0) {
      this.words[0] = 0;
      this.length = 1;
    }

    return this.strip();
  };

  BN.prototype.ishrn = function ishrn (bits, hint, extended) {
    // TODO(indutny): implement me
    assert(this.negative === 0);
    return this.iushrn(bits, hint, extended);
  };

  // Shift-left
  BN.prototype.shln = function shln (bits) {
    return this.clone().ishln(bits);
  };

  BN.prototype.ushln = function ushln (bits) {
    return this.clone().iushln(bits);
  };

  // Shift-right
  BN.prototype.shrn = function shrn (bits) {
    return this.clone().ishrn(bits);
  };

  BN.prototype.ushrn = function ushrn (bits) {
    return this.clone().iushrn(bits);
  };

  // Test if n bit is set
  BN.prototype.testn = function testn (bit) {
    assert(typeof bit === 'number' && bit >= 0);
    var r = bit % 26;
    var s = (bit - r) / 26;
    var q = 1 << r;

    // Fast case: bit is much higher than all existing words
    if (this.length <= s) return false;

    // Check bit and return
    var w = this.words[s];

    return !!(w & q);
  };

  // Return only lowers bits of number (in-place)
  BN.prototype.imaskn = function imaskn (bits) {
    assert(typeof bits === 'number' && bits >= 0);
    var r = bits % 26;
    var s = (bits - r) / 26;

    assert(this.negative === 0, 'imaskn works only with positive numbers');

    if (this.length <= s) {
      return this;
    }

    if (r !== 0) {
      s++;
    }
    this.length = Math.min(s, this.length);

    if (r !== 0) {
      var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
      this.words[this.length - 1] &= mask;
    }

    return this.strip();
  };

  // Return only lowers bits of number
  BN.prototype.maskn = function maskn (bits) {
    return this.clone().imaskn(bits);
  };

  // Add plain number `num` to `this`
  BN.prototype.iaddn = function iaddn (num) {
    assert(typeof num === 'number');
    assert(num < 0x4000000);
    if (num < 0) return this.isubn(-num);

    // Possible sign change
    if (this.negative !== 0) {
      if (this.length === 1 && (this.words[0] | 0) < num) {
        this.words[0] = num - (this.words[0] | 0);
        this.negative = 0;
        return this;
      }

      this.negative = 0;
      this.isubn(num);
      this.negative = 1;
      return this;
    }

    // Add without checks
    return this._iaddn(num);
  };

  BN.prototype._iaddn = function _iaddn (num) {
    this.words[0] += num;

    // Carry
    for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) {
      this.words[i] -= 0x4000000;
      if (i === this.length - 1) {
        this.words[i + 1] = 1;
      } else {
        this.words[i + 1]++;
      }
    }
    this.length = Math.max(this.length, i + 1);

    return this;
  };

  // Subtract plain number `num` from `this`
  BN.prototype.isubn = function isubn (num) {
    assert(typeof num === 'number');
    assert(num < 0x4000000);
    if (num < 0) return this.iaddn(-num);

    if (this.negative !== 0) {
      this.negative = 0;
      this.iaddn(num);
      this.negative = 1;
      return this;
    }

    this.words[0] -= num;

    if (this.length === 1 && this.words[0] < 0) {
      this.words[0] = -this.words[0];
      this.negative = 1;
    } else {
      // Carry
      for (var i = 0; i < this.length && this.words[i] < 0; i++) {
        this.words[i] += 0x4000000;
        this.words[i + 1] -= 1;
      }
    }

    return this.strip();
  };

  BN.prototype.addn = function addn (num) {
    return this.clone().iaddn(num);
  };

  BN.prototype.subn = function subn (num) {
    return this.clone().isubn(num);
  };

  BN.prototype.iabs = function iabs () {
    this.negative = 0;

    return this;
  };

  BN.prototype.abs = function abs () {
    return this.clone().iabs();
  };

  BN.prototype._ishlnsubmul = function _ishlnsubmul (num, mul, shift) {
    var len = num.length + shift;
    var i;

    this._expand(len);

    var w;
    var carry = 0;
    for (i = 0; i < num.length; i++) {
      w = (this.words[i + shift] | 0) + carry;
      var right = (num.words[i] | 0) * mul;
      w -= right & 0x3ffffff;
      carry = (w >> 26) - ((right / 0x4000000) | 0);
      this.words[i + shift] = w & 0x3ffffff;
    }
    for (; i < this.length - shift; i++) {
      w = (this.words[i + shift] | 0) + carry;
      carry = w >> 26;
      this.words[i + shift] = w & 0x3ffffff;
    }

    if (carry === 0) return this.strip();

    // Subtraction overflow
    assert(carry === -1);
    carry = 0;
    for (i = 0; i < this.length; i++) {
      w = -(this.words[i] | 0) + carry;
      carry = w >> 26;
      this.words[i] = w & 0x3ffffff;
    }
    this.negative = 1;

    return this.strip();
  };

  BN.prototype._wordDiv = function _wordDiv (num, mode) {
    var shift = this.length - num.length;

    var a = this.clone();
    var b = num;

    // Normalize
    var bhi = b.words[b.length - 1] | 0;
    var bhiBits = this._countBits(bhi);
    shift = 26 - bhiBits;
    if (shift !== 0) {
      b = b.ushln(shift);
      a.iushln(shift);
      bhi = b.words[b.length - 1] | 0;
    }

    // Initialize quotient
    var m = a.length - b.length;
    var q;

    if (mode !== 'mod') {
      q = new BN(null);
      q.length = m + 1;
      q.words = new Array(q.length);
      for (var i = 0; i < q.length; i++) {
        q.words[i] = 0;
      }
    }

    var diff = a.clone()._ishlnsubmul(b, 1, m);
    if (diff.negative === 0) {
      a = diff;
      if (q) {
        q.words[m] = 1;
      }
    }

    for (var j = m - 1; j >= 0; j--) {
      var qj = (a.words[b.length + j] | 0) * 0x4000000 +
        (a.words[b.length + j - 1] | 0);

      // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max
      // (0x7ffffff)
      qj = Math.min((qj / bhi) | 0, 0x3ffffff);

      a._ishlnsubmul(b, qj, j);
      while (a.negative !== 0) {
        qj--;
        a.negative = 0;
        a._ishlnsubmul(b, 1, j);
        if (!a.isZero()) {
          a.negative ^= 1;
        }
      }
      if (q) {
        q.words[j] = qj;
      }
    }
    if (q) {
      q.strip();
    }
    a.strip();

    // Denormalize
    if (mode !== 'div' && shift !== 0) {
      a.iushrn(shift);
    }

    return {
      div: q || null,
      mod: a
    };
  };

  // NOTE: 1) `mode` can be set to `mod` to request mod only,
  //       to `div` to request div only, or be absent to
  //       request both div & mod
  //       2) `positive` is true if unsigned mod is requested
  BN.prototype.divmod = function divmod (num, mode, positive) {
    assert(!num.isZero());

    if (this.isZero()) {
      return {
        div: new BN(0),
        mod: new BN(0)
      };
    }

    var div, mod, res;
    if (this.negative !== 0 && num.negative === 0) {
      res = this.neg().divmod(num, mode);

      if (mode !== 'mod') {
        div = res.div.neg();
      }

      if (mode !== 'div') {
        mod = res.mod.neg();
        if (positive && mod.negative !== 0) {
          mod.iadd(num);
        }
      }

      return {
        div: div,
        mod: mod
      };
    }

    if (this.negative === 0 && num.negative !== 0) {
      res = this.divmod(num.neg(), mode);

      if (mode !== 'mod') {
        div = res.div.neg();
      }

      return {
        div: div,
        mod: res.mod
      };
    }

    if ((this.negative & num.negative) !== 0) {
      res = this.neg().divmod(num.neg(), mode);

      if (mode !== 'div') {
        mod = res.mod.neg();
        if (positive && mod.negative !== 0) {
          mod.isub(num);
        }
      }

      return {
        div: res.div,
        mod: mod
      };
    }

    // Both numbers are positive at this point

    // Strip both numbers to approximate shift value
    if (num.length > this.length || this.cmp(num) < 0) {
      return {
        div: new BN(0),
        mod: this
      };
    }

    // Very short reduction
    if (num.length === 1) {
      if (mode === 'div') {
        return {
          div: this.divn(num.words[0]),
          mod: null
        };
      }

      if (mode === 'mod') {
        return {
          div: null,
          mod: new BN(this.modn(num.words[0]))
        };
      }

      return {
        div: this.divn(num.words[0]),
        mod: new BN(this.modn(num.words[0]))
      };
    }

    return this._wordDiv(num, mode);
  };

  // Find `this` / `num`
  BN.prototype.div = function div (num) {
    return this.divmod(num, 'div', false).div;
  };

  // Find `this` % `num`
  BN.prototype.mod = function mod (num) {
    return this.divmod(num, 'mod', false).mod;
  };

  BN.prototype.umod = function umod (num) {
    return this.divmod(num, 'mod', true).mod;
  };

  // Find Round(`this` / `num`)
  BN.prototype.divRound = function divRound (num) {
    var dm = this.divmod(num);

    // Fast case - exact division
    if (dm.mod.isZero()) return dm.div;

    var mod = dm.div.negative !== 0 ? dm.mod.isub(num) : dm.mod;

    var half = num.ushrn(1);
    var r2 = num.andln(1);
    var cmp = mod.cmp(half);

    // Round down
    if (cmp < 0 || r2 === 1 && cmp === 0) return dm.div;

    // Round up
    return dm.div.negative !== 0 ? dm.div.isubn(1) : dm.div.iaddn(1);
  };

  BN.prototype.modn = function modn (num) {
    assert(num <= 0x3ffffff);
    var p = (1 << 26) % num;

    var acc = 0;
    for (var i = this.length - 1; i >= 0; i--) {
      acc = (p * acc + (this.words[i] | 0)) % num;
    }

    return acc;
  };

  // In-place division by number
  BN.prototype.idivn = function idivn (num) {
    assert(num <= 0x3ffffff);

    var carry = 0;
    for (var i = this.length - 1; i >= 0; i--) {
      var w = (this.words[i] | 0) + carry * 0x4000000;
      this.words[i] = (w / num) | 0;
      carry = w % num;
    }

    return this.strip();
  };

  BN.prototype.divn = function divn (num) {
    return this.clone().idivn(num);
  };

  BN.prototype.egcd = function egcd (p) {
    assert(p.negative === 0);
    assert(!p.isZero());

    var x = this;
    var y = p.clone();

    if (x.negative !== 0) {
      x = x.umod(p);
    } else {
      x = x.clone();
    }

    // A * x + B * y = x
    var A = new BN(1);
    var B = new BN(0);

    // C * x + D * y = y
    var C = new BN(0);
    var D = new BN(1);

    var g = 0;

    while (x.isEven() && y.isEven()) {
      x.iushrn(1);
      y.iushrn(1);
      ++g;
    }

    var yp = y.clone();
    var xp = x.clone();

    while (!x.isZero()) {
      for (var i = 0, im = 1; (x.words[0] & im) === 0 && i < 26; ++i, im <<= 1);
      if (i > 0) {
        x.iushrn(i);
        while (i-- > 0) {
          if (A.isOdd() || B.isOdd()) {
            A.iadd(yp);
            B.isub(xp);
          }

          A.iushrn(1);
          B.iushrn(1);
        }
      }

      for (var j = 0, jm = 1; (y.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1);
      if (j > 0) {
        y.iushrn(j);
        while (j-- > 0) {
          if (C.isOdd() || D.isOdd()) {
            C.iadd(yp);
            D.isub(xp);
          }

          C.iushrn(1);
          D.iushrn(1);
        }
      }

      if (x.cmp(y) >= 0) {
        x.isub(y);
        A.isub(C);
        B.isub(D);
      } else {
        y.isub(x);
        C.isub(A);
        D.isub(B);
      }
    }

    return {
      a: C,
      b: D,
      gcd: y.iushln(g)
    };
  };

  // This is reduced incarnation of the binary EEA
  // above, designated to invert members of the
  // _prime_ fields F(p) at a maximal speed
  BN.prototype._invmp = function _invmp (p) {
    assert(p.negative === 0);
    assert(!p.isZero());

    var a = this;
    var b = p.clone();

    if (a.negative !== 0) {
      a = a.umod(p);
    } else {
      a = a.clone();
    }

    var x1 = new BN(1);
    var x2 = new BN(0);

    var delta = b.clone();

    while (a.cmpn(1) > 0 && b.cmpn(1) > 0) {
      for (var i = 0, im = 1; (a.words[0] & im) === 0 && i < 26; ++i, im <<= 1);
      if (i > 0) {
        a.iushrn(i);
        while (i-- > 0) {
          if (x1.isOdd()) {
            x1.iadd(delta);
          }

          x1.iushrn(1);
        }
      }

      for (var j = 0, jm = 1; (b.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1);
      if (j > 0) {
        b.iushrn(j);
        while (j-- > 0) {
          if (x2.isOdd()) {
            x2.iadd(delta);
          }

          x2.iushrn(1);
        }
      }

      if (a.cmp(b) >= 0) {
        a.isub(b);
        x1.isub(x2);
      } else {
        b.isub(a);
        x2.isub(x1);
      }
    }

    var res;
    if (a.cmpn(1) === 0) {
      res = x1;
    } else {
      res = x2;
    }

    if (res.cmpn(0) < 0) {
      res.iadd(p);
    }

    return res;
  };

  BN.prototype.gcd = function gcd (num) {
    if (this.isZero()) return num.abs();
    if (num.isZero()) return this.abs();

    var a = this.clone();
    var b = num.clone();
    a.negative = 0;
    b.negative = 0;

    // Remove common factor of two
    for (var shift = 0; a.isEven() && b.isEven(); shift++) {
      a.iushrn(1);
      b.iushrn(1);
    }

    do {
      while (a.isEven()) {
        a.iushrn(1);
      }
      while (b.isEven()) {
        b.iushrn(1);
      }

      var r = a.cmp(b);
      if (r < 0) {
        // Swap `a` and `b` to make `a` always bigger than `b`
        var t = a;
        a = b;
        b = t;
      } else if (r === 0 || b.cmpn(1) === 0) {
        break;
      }

      a.isub(b);
    } while (true);

    return b.iushln(shift);
  };

  // Invert number in the field F(num)
  BN.prototype.invm = function invm (num) {
    return this.egcd(num).a.umod(num);
  };

  BN.prototype.isEven = function isEven () {
    return (this.words[0] & 1) === 0;
  };

  BN.prototype.isOdd = function isOdd () {
    return (this.words[0] & 1) === 1;
  };

  // And first word and num
  BN.prototype.andln = function andln (num) {
    return this.words[0] & num;
  };

  // Increment at the bit position in-line
  BN.prototype.bincn = function bincn (bit) {
    assert(typeof bit === 'number');
    var r = bit % 26;
    var s = (bit - r) / 26;
    var q = 1 << r;

    // Fast case: bit is much higher than all existing words
    if (this.length <= s) {
      this._expand(s + 1);
      this.words[s] |= q;
      return this;
    }

    // Add bit and propagate, if needed
    var carry = q;
    for (var i = s; carry !== 0 && i < this.length; i++) {
      var w = this.words[i] | 0;
      w += carry;
      carry = w >>> 26;
      w &= 0x3ffffff;
      this.words[i] = w;
    }
    if (carry !== 0) {
      this.words[i] = carry;
      this.length++;
    }
    return this;
  };

  BN.prototype.isZero = function isZero () {
    return this.length === 1 && this.words[0] === 0;
  };

  BN.prototype.cmpn = function cmpn (num) {
    var negative = num < 0;

    if (this.negative !== 0 && !negative) return -1;
    if (this.negative === 0 && negative) return 1;

    this.strip();

    var res;
    if (this.length > 1) {
      res = 1;
    } else {
      if (negative) {
        num = -num;
      }

      assert(num <= 0x3ffffff, 'Number is too big');

      var w = this.words[0] | 0;
      res = w === num ? 0 : w < num ? -1 : 1;
    }
    if (this.negative !== 0) return -res | 0;
    return res;
  };

  // Compare two numbers and return:
  // 1 - if `this` > `num`
  // 0 - if `this` == `num`
  // -1 - if `this` < `num`
  BN.prototype.cmp = function cmp (num) {
    if (this.negative !== 0 && num.negative === 0) return -1;
    if (this.negative === 0 && num.negative !== 0) return 1;

    var res = this.ucmp(num);
    if (this.negative !== 0) return -res | 0;
    return res;
  };

  // Unsigned comparison
  BN.prototype.ucmp = function ucmp (num) {
    // At this point both numbers have the same sign
    if (this.length > num.length) return 1;
    if (this.length < num.length) return -1;

    var res = 0;
    for (var i = this.length - 1; i >= 0; i--) {
      var a = this.words[i] | 0;
      var b = num.words[i] | 0;

      if (a === b) continue;
      if (a < b) {
        res = -1;
      } else if (a > b) {
        res = 1;
      }
      break;
    }
    return res;
  };

  BN.prototype.gtn = function gtn (num) {
    return this.cmpn(num) === 1;
  };

  BN.prototype.gt = function gt (num) {
    return this.cmp(num) === 1;
  };

  BN.prototype.gten = function gten (num) {
    return this.cmpn(num) >= 0;
  };

  BN.prototype.gte = function gte (num) {
    return this.cmp(num) >= 0;
  };

  BN.prototype.ltn = function ltn (num) {
    return this.cmpn(num) === -1;
  };

  BN.prototype.lt = function lt (num) {
    return this.cmp(num) === -1;
  };

  BN.prototype.lten = function lten (num) {
    return this.cmpn(num) <= 0;
  };

  BN.prototype.lte = function lte (num) {
    return this.cmp(num) <= 0;
  };

  BN.prototype.eqn = function eqn (num) {
    return this.cmpn(num) === 0;
  };

  BN.prototype.eq = function eq (num) {
    return this.cmp(num) === 0;
  };

  //
  // A reduce context, could be using montgomery or something better, depending
  // on the `m` itself.
  //
  BN.red = function red (num) {
    return new Red(num);
  };

  BN.prototype.toRed = function toRed (ctx) {
    assert(!this.red, 'Already a number in reduction context');
    assert(this.negative === 0, 'red works only with positives');
    return ctx.convertTo(this)._forceRed(ctx);
  };

  BN.prototype.fromRed = function fromRed () {
    assert(this.red, 'fromRed works only with numbers in reduction context');
    return this.red.convertFrom(this);
  };

  BN.prototype._forceRed = function _forceRed (ctx) {
    this.red = ctx;
    return this;
  };

  BN.prototype.forceRed = function forceRed (ctx) {
    assert(!this.red, 'Already a number in reduction context');
    return this._forceRed(ctx);
  };

  BN.prototype.redAdd = function redAdd (num) {
    assert(this.red, 'redAdd works only with red numbers');
    return this.red.add(this, num);
  };

  BN.prototype.redIAdd = function redIAdd (num) {
    assert(this.red, 'redIAdd works only with red numbers');
    return this.red.iadd(this, num);
  };

  BN.prototype.redSub = function redSub (num) {
    assert(this.red, 'redSub works only with red numbers');
    return this.red.sub(this, num);
  };

  BN.prototype.redISub = function redISub (num) {
    assert(this.red, 'redISub works only with red numbers');
    return this.red.isub(this, num);
  };

  BN.prototype.redShl = function redShl (num) {
    assert(this.red, 'redShl works only with red numbers');
    return this.red.shl(this, num);
  };

  BN.prototype.redMul = function redMul (num) {
    assert(this.red, 'redMul works only with red numbers');
    this.red._verify2(this, num);
    return this.red.mul(this, num);
  };

  BN.prototype.redIMul = function redIMul (num) {
    assert(this.red, 'redMul works only with red numbers');
    this.red._verify2(this, num);
    return this.red.imul(this, num);
  };

  BN.prototype.redSqr = function redSqr () {
    assert(this.red, 'redSqr works only with red numbers');
    this.red._verify1(this);
    return this.red.sqr(this);
  };

  BN.prototype.redISqr = function redISqr () {
    assert(this.red, 'redISqr works only with red numbers');
    this.red._verify1(this);
    return this.red.isqr(this);
  };

  // Square root over p
  BN.prototype.redSqrt = function redSqrt () {
    assert(this.red, 'redSqrt works only with red numbers');
    this.red._verify1(this);
    return this.red.sqrt(this);
  };

  BN.prototype.redInvm = function redInvm () {
    assert(this.red, 'redInvm works only with red numbers');
    this.red._verify1(this);
    return this.red.invm(this);
  };

  // Return negative clone of `this` % `red modulo`
  BN.prototype.redNeg = function redNeg () {
    assert(this.red, 'redNeg works only with red numbers');
    this.red._verify1(this);
    return this.red.neg(this);
  };

  BN.prototype.redPow = function redPow (num) {
    assert(this.red && !num.red, 'redPow(normalNum)');
    this.red._verify1(this);
    return this.red.pow(this, num);
  };

  // Prime numbers with efficient reduction
  var primes = {
    k256: null,
    p224: null,
    p192: null,
    p25519: null
  };

  // Pseudo-Mersenne prime
  function MPrime (name, p) {
    // P = 2 ^ N - K
    this.name = name;
    this.p = new BN(p, 16);
    this.n = this.p.bitLength();
    this.k = new BN(1).iushln(this.n).isub(this.p);

    this.tmp = this._tmp();
  }

  MPrime.prototype._tmp = function _tmp () {
    var tmp = new BN(null);
    tmp.words = new Array(Math.ceil(this.n / 13));
    return tmp;
  };

  MPrime.prototype.ireduce = function ireduce (num) {
    // Assumes that `num` is less than `P^2`
    // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P)
    var r = num;
    var rlen;

    do {
      this.split(r, this.tmp);
      r = this.imulK(r);
      r = r.iadd(this.tmp);
      rlen = r.bitLength();
    } while (rlen > this.n);

    var cmp = rlen < this.n ? -1 : r.ucmp(this.p);
    if (cmp === 0) {
      r.words[0] = 0;
      r.length = 1;
    } else if (cmp > 0) {
      r.isub(this.p);
    } else {
      r.strip();
    }

    return r;
  };

  MPrime.prototype.split = function split (input, out) {
    input.iushrn(this.n, 0, out);
  };

  MPrime.prototype.imulK = function imulK (num) {
    return num.imul(this.k);
  };

  function K256 () {
    MPrime.call(
      this,
      'k256',
      'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f');
  }
  inherits(K256, MPrime);

  K256.prototype.split = function split (input, output) {
    // 256 = 9 * 26 + 22
    var mask = 0x3fffff;

    var outLen = Math.min(input.length, 9);
    for (var i = 0; i < outLen; i++) {
      output.words[i] = input.words[i];
    }
    output.length = outLen;

    if (input.length <= 9) {
      input.words[0] = 0;
      input.length = 1;
      return;
    }

    // Shift by 9 limbs
    var prev = input.words[9];
    output.words[output.length++] = prev & mask;

    for (i = 10; i < input.length; i++) {
      var next = input.words[i] | 0;
      input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22);
      prev = next;
    }
    prev >>>= 22;
    input.words[i - 10] = prev;
    if (prev === 0 && input.length > 10) {
      input.length -= 10;
    } else {
      input.length -= 9;
    }
  };

  K256.prototype.imulK = function imulK (num) {
    // K = 0x1000003d1 = [ 0x40, 0x3d1 ]
    num.words[num.length] = 0;
    num.words[num.length + 1] = 0;
    num.length += 2;

    // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390
    var lo = 0;
    for (var i = 0; i < num.length; i++) {
      var w = num.words[i] | 0;
      lo += w * 0x3d1;
      num.words[i] = lo & 0x3ffffff;
      lo = w * 0x40 + ((lo / 0x4000000) | 0);
    }

    // Fast length reduction
    if (num.words[num.length - 1] === 0) {
      num.length--;
      if (num.words[num.length - 1] === 0) {
        num.length--;
      }
    }
    return num;
  };

  function P224 () {
    MPrime.call(
      this,
      'p224',
      'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001');
  }
  inherits(P224, MPrime);

  function P192 () {
    MPrime.call(
      this,
      'p192',
      'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff');
  }
  inherits(P192, MPrime);

  function P25519 () {
    // 2 ^ 255 - 19
    MPrime.call(
      this,
      '25519',
      '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed');
  }
  inherits(P25519, MPrime);

  P25519.prototype.imulK = function imulK (num) {
    // K = 0x13
    var carry = 0;
    for (var i = 0; i < num.length; i++) {
      var hi = (num.words[i] | 0) * 0x13 + carry;
      var lo = hi & 0x3ffffff;
      hi >>>= 26;

      num.words[i] = lo;
      carry = hi;
    }
    if (carry !== 0) {
      num.words[num.length++] = carry;
    }
    return num;
  };

  // Exported mostly for testing purposes, use plain name instead
  BN._prime = function prime (name) {
    // Cached version of prime
    if (primes[name]) return primes[name];

    var prime;
    if (name === 'k256') {
      prime = new K256();
    } else if (name === 'p224') {
      prime = new P224();
    } else if (name === 'p192') {
      prime = new P192();
    } else if (name === 'p25519') {
      prime = new P25519();
    } else {
      throw new Error('Unknown prime ' + name);
    }
    primes[name] = prime;

    return prime;
  };

  //
  // Base reduction engine
  //
  function Red (m) {
    if (typeof m === 'string') {
      var prime = BN._prime(m);
      this.m = prime.p;
      this.prime = prime;
    } else {
      assert(m.gtn(1), 'modulus must be greater than 1');
      this.m = m;
      this.prime = null;
    }
  }

  Red.prototype._verify1 = function _verify1 (a) {
    assert(a.negative === 0, 'red works only with positives');
    assert(a.red, 'red works only with red numbers');
  };

  Red.prototype._verify2 = function _verify2 (a, b) {
    assert((a.negative | b.negative) === 0, 'red works only with positives');
    assert(a.red && a.red === b.red,
      'red works only with red numbers');
  };

  Red.prototype.imod = function imod (a) {
    if (this.prime) return this.prime.ireduce(a)._forceRed(this);
    return a.umod(this.m)._forceRed(this);
  };

  Red.prototype.neg = function neg (a) {
    if (a.isZero()) {
      return a.clone();
    }

    return this.m.sub(a)._forceRed(this);
  };

  Red.prototype.add = function add (a, b) {
    this._verify2(a, b);

    var res = a.add(b);
    if (res.cmp(this.m) >= 0) {
      res.isub(this.m);
    }
    return res._forceRed(this);
  };

  Red.prototype.iadd = function iadd (a, b) {
    this._verify2(a, b);

    var res = a.iadd(b);
    if (res.cmp(this.m) >= 0) {
      res.isub(this.m);
    }
    return res;
  };

  Red.prototype.sub = function sub (a, b) {
    this._verify2(a, b);

    var res = a.sub(b);
    if (res.cmpn(0) < 0) {
      res.iadd(this.m);
    }
    return res._forceRed(this);
  };

  Red.prototype.isub = function isub (a, b) {
    this._verify2(a, b);

    var res = a.isub(b);
    if (res.cmpn(0) < 0) {
      res.iadd(this.m);
    }
    return res;
  };

  Red.prototype.shl = function shl (a, num) {
    this._verify1(a);
    return this.imod(a.ushln(num));
  };

  Red.prototype.imul = function imul (a, b) {
    this._verify2(a, b);
    return this.imod(a.imul(b));
  };

  Red.prototype.mul = function mul (a, b) {
    this._verify2(a, b);
    return this.imod(a.mul(b));
  };

  Red.prototype.isqr = function isqr (a) {
    return this.imul(a, a.clone());
  };

  Red.prototype.sqr = function sqr (a) {
    return this.mul(a, a);
  };

  Red.prototype.sqrt = function sqrt (a) {
    if (a.isZero()) return a.clone();

    var mod3 = this.m.andln(3);
    assert(mod3 % 2 === 1);

    // Fast case
    if (mod3 === 3) {
      var pow = this.m.add(new BN(1)).iushrn(2);
      return this.pow(a, pow);
    }

    // Tonelli-Shanks algorithm (Totally unoptimized and slow)
    //
    // Find Q and S, that Q * 2 ^ S = (P - 1)
    var q = this.m.subn(1);
    var s = 0;
    while (!q.isZero() && q.andln(1) === 0) {
      s++;
      q.iushrn(1);
    }
    assert(!q.isZero());

    var one = new BN(1).toRed(this);
    var nOne = one.redNeg();

    // Find quadratic non-residue
    // NOTE: Max is such because of generalized Riemann hypothesis.
    var lpow = this.m.subn(1).iushrn(1);
    var z = this.m.bitLength();
    z = new BN(2 * z * z).toRed(this);

    while (this.pow(z, lpow).cmp(nOne) !== 0) {
      z.redIAdd(nOne);
    }

    var c = this.pow(z, q);
    var r = this.pow(a, q.addn(1).iushrn(1));
    var t = this.pow(a, q);
    var m = s;
    while (t.cmp(one) !== 0) {
      var tmp = t;
      for (var i = 0; tmp.cmp(one) !== 0; i++) {
        tmp = tmp.redSqr();
      }
      assert(i < m);
      var b = this.pow(c, new BN(1).iushln(m - i - 1));

      r = r.redMul(b);
      c = b.redSqr();
      t = t.redMul(c);
      m = i;
    }

    return r;
  };

  Red.prototype.invm = function invm (a) {
    var inv = a._invmp(this.m);
    if (inv.negative !== 0) {
      inv.negative = 0;
      return this.imod(inv).redNeg();
    } else {
      return this.imod(inv);
    }
  };

  Red.prototype.pow = function pow (a, num) {
    if (num.isZero()) return new BN(1).toRed(this);
    if (num.cmpn(1) === 0) return a.clone();

    var windowSize = 4;
    var wnd = new Array(1 << windowSize);
    wnd[0] = new BN(1).toRed(this);
    wnd[1] = a;
    for (var i = 2; i < wnd.length; i++) {
      wnd[i] = this.mul(wnd[i - 1], a);
    }

    var res = wnd[0];
    var current = 0;
    var currentLen = 0;
    var start = num.bitLength() % 26;
    if (start === 0) {
      start = 26;
    }

    for (i = num.length - 1; i >= 0; i--) {
      var word = num.words[i];
      for (var j = start - 1; j >= 0; j--) {
        var bit = (word >> j) & 1;
        if (res !== wnd[0]) {
          res = this.sqr(res);
        }

        if (bit === 0 && current === 0) {
          currentLen = 0;
          continue;
        }

        current <<= 1;
        current |= bit;
        currentLen++;
        if (currentLen !== windowSize && (i !== 0 || j !== 0)) continue;

        res = this.mul(res, wnd[current]);
        currentLen = 0;
        current = 0;
      }
      start = 26;
    }

    return res;
  };

  Red.prototype.convertTo = function convertTo (num) {
    var r = num.umod(this.m);

    return r === num ? r.clone() : r;
  };

  Red.prototype.convertFrom = function convertFrom (num) {
    var res = num.clone();
    res.red = null;
    return res;
  };

  //
  // Montgomery method engine
  //

  BN.mont = function mont (num) {
    return new Mont(num);
  };

  function Mont (m) {
    Red.call(this, m);

    this.shift = this.m.bitLength();
    if (this.shift % 26 !== 0) {
      this.shift += 26 - (this.shift % 26);
    }

    this.r = new BN(1).iushln(this.shift);
    this.r2 = this.imod(this.r.sqr());
    this.rinv = this.r._invmp(this.m);

    this.minv = this.rinv.mul(this.r).isubn(1).div(this.m);
    this.minv = this.minv.umod(this.r);
    this.minv = this.r.sub(this.minv);
  }
  inherits(Mont, Red);

  Mont.prototype.convertTo = function convertTo (num) {
    return this.imod(num.ushln(this.shift));
  };

  Mont.prototype.convertFrom = function convertFrom (num) {
    var r = this.imod(num.mul(this.rinv));
    r.red = null;
    return r;
  };

  Mont.prototype.imul = function imul (a, b) {
    if (a.isZero() || b.isZero()) {
      a.words[0] = 0;
      a.length = 1;
      return a;
    }

    var t = a.imul(b);
    var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
    var u = t.isub(c).iushrn(this.shift);
    var res = u;

    if (u.cmp(this.m) >= 0) {
      res = u.isub(this.m);
    } else if (u.cmpn(0) < 0) {
      res = u.iadd(this.m);
    }

    return res._forceRed(this);
  };

  Mont.prototype.mul = function mul (a, b) {
    if (a.isZero() || b.isZero()) return new BN(0)._forceRed(this);

    var t = a.mul(b);
    var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
    var u = t.isub(c).iushrn(this.shift);
    var res = u;
    if (u.cmp(this.m) >= 0) {
      res = u.isub(this.m);
    } else if (u.cmpn(0) < 0) {
      res = u.iadd(this.m);
    }

    return res._forceRed(this);
  };

  Mont.prototype.invm = function invm (a) {
    // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R
    var res = this.imod(a._invmp(this.m).mul(this.r2));
    return res._forceRed(this);
  };
})(typeof module === 'undefined' || module, this);

},{"buffer":138}],137:[function(require,module,exports){
var r;

module.exports = function rand(len) {
  if (!r)
    r = new Rand(null);

  return r.generate(len);
};

function Rand(rand) {
  this.rand = rand;
}
module.exports.Rand = Rand;

Rand.prototype.generate = function generate(len) {
  return this._rand(len);
};

// Emulate crypto API using randy
Rand.prototype._rand = function _rand(n) {
  if (this.rand.getBytes)
    return this.rand.getBytes(n);

  var res = new Uint8Array(n);
  for (var i = 0; i < res.length; i++)
    res[i] = this.rand.getByte();
  return res;
};

if (typeof self === 'object') {
  if (self.crypto && self.crypto.getRandomValues) {
    // Modern browsers
    Rand.prototype._rand = function _rand(n) {
      var arr = new Uint8Array(n);
      self.crypto.getRandomValues(arr);
      return arr;
    };
  } else if (self.msCrypto && self.msCrypto.getRandomValues) {
    // IE
    Rand.prototype._rand = function _rand(n) {
      var arr = new Uint8Array(n);
      self.msCrypto.getRandomValues(arr);
      return arr;
    };

  // Safari's WebWorkers do not have `crypto`
  } else if (typeof window === 'object') {
    // Old junk
    Rand.prototype._rand = function() {
      throw new Error('Not implemented yet');
    };
  }
} else {
  // Node.js or Web worker with no crypto support
  try {
    var crypto = require('crypto');
    if (typeof crypto.randomBytes !== 'function')
      throw new Error('Not supported');

    Rand.prototype._rand = function _rand(n) {
      return crypto.randomBytes(n);
    };
  } catch (e) {
  }
}

},{"crypto":138}],138:[function(require,module,exports){

},{}],139:[function(require,module,exports){
// based on the aes implimentation in triple sec
// https://github.com/keybase/triplesec
// which is in turn based on the one from crypto-js
// https://code.google.com/p/crypto-js/

var Buffer = require('safe-buffer').Buffer

function asUInt32Array (buf) {
  if (!Buffer.isBuffer(buf)) buf = Buffer.from(buf)

  var len = (buf.length / 4) | 0
  var out = new Array(len)

  for (var i = 0; i < len; i++) {
    out[i] = buf.readUInt32BE(i * 4)
  }

  return out
}

function scrubVec (v) {
  for (var i = 0; i < v.length; v++) {
    v[i] = 0
  }
}

function cryptBlock (M, keySchedule, SUB_MIX, SBOX, nRounds) {
  var SUB_MIX0 = SUB_MIX[0]
  var SUB_MIX1 = SUB_MIX[1]
  var SUB_MIX2 = SUB_MIX[2]
  var SUB_MIX3 = SUB_MIX[3]

  var s0 = M[0] ^ keySchedule[0]
  var s1 = M[1] ^ keySchedule[1]
  var s2 = M[2] ^ keySchedule[2]
  var s3 = M[3] ^ keySchedule[3]
  var t0, t1, t2, t3
  var ksRow = 4

  for (var round = 1; round < nRounds; round++) {
    t0 = SUB_MIX0[s0 >>> 24] ^ SUB_MIX1[(s1 >>> 16) & 0xff] ^ SUB_MIX2[(s2 >>> 8) & 0xff] ^ SUB_MIX3[s3 & 0xff] ^ keySchedule[ksRow++]
    t1 = SUB_MIX0[s1 >>> 24] ^ SUB_MIX1[(s2 >>> 16) & 0xff] ^ SUB_MIX2[(s3 >>> 8) & 0xff] ^ SUB_MIX3[s0 & 0xff] ^ keySchedule[ksRow++]
    t2 = SUB_MIX0[s2 >>> 24] ^ SUB_MIX1[(s3 >>> 16) & 0xff] ^ SUB_MIX2[(s0 >>> 8) & 0xff] ^ SUB_MIX3[s1 & 0xff] ^ keySchedule[ksRow++]
    t3 = SUB_MIX0[s3 >>> 24] ^ SUB_MIX1[(s0 >>> 16) & 0xff] ^ SUB_MIX2[(s1 >>> 8) & 0xff] ^ SUB_MIX3[s2 & 0xff] ^ keySchedule[ksRow++]
    s0 = t0
    s1 = t1
    s2 = t2
    s3 = t3
  }

  t0 = ((SBOX[s0 >>> 24] << 24) | (SBOX[(s1 >>> 16) & 0xff] << 16) | (SBOX[(s2 >>> 8) & 0xff] << 8) | SBOX[s3 & 0xff]) ^ keySchedule[ksRow++]
  t1 = ((SBOX[s1 >>> 24] << 24) | (SBOX[(s2 >>> 16) & 0xff] << 16) | (SBOX[(s3 >>> 8) & 0xff] << 8) | SBOX[s0 & 0xff]) ^ keySchedule[ksRow++]
  t2 = ((SBOX[s2 >>> 24] << 24) | (SBOX[(s3 >>> 16) & 0xff] << 16) | (SBOX[(s0 >>> 8) & 0xff] << 8) | SBOX[s1 & 0xff]) ^ keySchedule[ksRow++]
  t3 = ((SBOX[s3 >>> 24] << 24) | (SBOX[(s0 >>> 16) & 0xff] << 16) | (SBOX[(s1 >>> 8) & 0xff] << 8) | SBOX[s2 & 0xff]) ^ keySchedule[ksRow++]
  t0 = t0 >>> 0
  t1 = t1 >>> 0
  t2 = t2 >>> 0
  t3 = t3 >>> 0

  return [t0, t1, t2, t3]
}

// AES constants
var RCON = [0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36]
var G = (function () {
  // Compute double table
  var d = new Array(256)
  for (var j = 0; j < 256; j++) {
    if (j < 128) {
      d[j] = j << 1
    } else {
      d[j] = (j << 1) ^ 0x11b
    }
  }

  var SBOX = []
  var INV_SBOX = []
  var SUB_MIX = [[], [], [], []]
  var INV_SUB_MIX = [[], [], [], []]

  // Walk GF(2^8)
  var x = 0
  var xi = 0
  for (var i = 0; i < 256; ++i) {
    // Compute sbox
    var sx = xi ^ (xi << 1) ^ (xi << 2) ^ (xi << 3) ^ (xi << 4)
    sx = (sx >>> 8) ^ (sx & 0xff) ^ 0x63
    SBOX[x] = sx
    INV_SBOX[sx] = x

    // Compute multiplication
    var x2 = d[x]
    var x4 = d[x2]
    var x8 = d[x4]

    // Compute sub bytes, mix columns tables
    var t = (d[sx] * 0x101) ^ (sx * 0x1010100)
    SUB_MIX[0][x] = (t << 24) | (t >>> 8)
    SUB_MIX[1][x] = (t << 16) | (t >>> 16)
    SUB_MIX[2][x] = (t << 8) | (t >>> 24)
    SUB_MIX[3][x] = t

    // Compute inv sub bytes, inv mix columns tables
    t = (x8 * 0x1010101) ^ (x4 * 0x10001) ^ (x2 * 0x101) ^ (x * 0x1010100)
    INV_SUB_MIX[0][sx] = (t << 24) | (t >>> 8)
    INV_SUB_MIX[1][sx] = (t << 16) | (t >>> 16)
    INV_SUB_MIX[2][sx] = (t << 8) | (t >>> 24)
    INV_SUB_MIX[3][sx] = t

    if (x === 0) {
      x = xi = 1
    } else {
      x = x2 ^ d[d[d[x8 ^ x2]]]
      xi ^= d[d[xi]]
    }
  }

  return {
    SBOX: SBOX,
    INV_SBOX: INV_SBOX,
    SUB_MIX: SUB_MIX,
    INV_SUB_MIX: INV_SUB_MIX
  }
})()

function AES (key) {
  this._key = asUInt32Array(key)
  this._reset()
}

AES.blockSize = 4 * 4
AES.keySize = 256 / 8
AES.prototype.blockSize = AES.blockSize
AES.prototype.keySize = AES.keySize
AES.prototype._reset = function () {
  var keyWords = this._key
  var keySize = keyWords.length
  var nRounds = keySize + 6
  var ksRows = (nRounds + 1) * 4

  var keySchedule = []
  for (var k = 0; k < keySize; k++) {
    keySchedule[k] = keyWords[k]
  }

  for (k = keySize; k < ksRows; k++) {
    var t = keySchedule[k - 1]

    if (k % keySize === 0) {
      t = (t << 8) | (t >>> 24)
      t =
        (G.SBOX[t >>> 24] << 24) |
        (G.SBOX[(t >>> 16) & 0xff] << 16) |
        (G.SBOX[(t >>> 8) & 0xff] << 8) |
        (G.SBOX[t & 0xff])

      t ^= RCON[(k / keySize) | 0] << 24
    } else if (keySize > 6 && k % keySize === 4) {
      t =
        (G.SBOX[t >>> 24] << 24) |
        (G.SBOX[(t >>> 16) & 0xff] << 16) |
        (G.SBOX[(t >>> 8) & 0xff] << 8) |
        (G.SBOX[t & 0xff])
    }

    keySchedule[k] = keySchedule[k - keySize] ^ t
  }

  var invKeySchedule = []
  for (var ik = 0; ik < ksRows; ik++) {
    var ksR = ksRows - ik
    var tt = keySchedule[ksR - (ik % 4 ? 0 : 4)]

    if (ik < 4 || ksR <= 4) {
      invKeySchedule[ik] = tt
    } else {
      invKeySchedule[ik] =
        G.INV_SUB_MIX[0][G.SBOX[tt >>> 24]] ^
        G.INV_SUB_MIX[1][G.SBOX[(tt >>> 16) & 0xff]] ^
        G.INV_SUB_MIX[2][G.SBOX[(tt >>> 8) & 0xff]] ^
        G.INV_SUB_MIX[3][G.SBOX[tt & 0xff]]
    }
  }

  this._nRounds = nRounds
  this._keySchedule = keySchedule
  this._invKeySchedule = invKeySchedule
}

AES.prototype.encryptBlockRaw = function (M) {
  M = asUInt32Array(M)
  return cryptBlock(M, this._keySchedule, G.SUB_MIX, G.SBOX, this._nRounds)
}

AES.prototype.encryptBlock = function (M) {
  var out = this.encryptBlockRaw(M)
  var buf = Buffer.allocUnsafe(16)
  buf.writeUInt32BE(out[0], 0)
  buf.writeUInt32BE(out[1], 4)
  buf.writeUInt32BE(out[2], 8)
  buf.writeUInt32BE(out[3], 12)
  return buf
}

AES.prototype.decryptBlock = function (M) {
  M = asUInt32Array(M)

  // swap
  var m1 = M[1]
  M[1] = M[3]
  M[3] = m1

  var out = cryptBlock(M, this._invKeySchedule, G.INV_SUB_MIX, G.INV_SBOX, this._nRounds)
  var buf = Buffer.allocUnsafe(16)
  buf.writeUInt32BE(out[0], 0)
  buf.writeUInt32BE(out[3], 4)
  buf.writeUInt32BE(out[2], 8)
  buf.writeUInt32BE(out[1], 12)
  return buf
}

AES.prototype.scrub = function () {
  scrubVec(this._keySchedule)
  scrubVec(this._invKeySchedule)
  scrubVec(this._key)
}

module.exports.AES = AES

},{"safe-buffer":326}],140:[function(require,module,exports){
var aes = require('./aes')
var Buffer = require('safe-buffer').Buffer
var Transform = require('cipher-base')
var inherits = require('inherits')
var GHASH = require('./ghash')
var xor = require('buffer-xor')
var incr32 = require('./incr32')

function xorTest (a, b) {
  var out = 0
  if (a.length !== b.length) out++

  var len = Math.min(a.length, b.length)
  for (var i = 0; i < len; ++i) {
    out += (a[i] ^ b[i])
  }

  return out
}

function calcIv (self, iv, ck) {
  if (iv.length === 12) {
    self._finID = Buffer.concat([iv, Buffer.from([0, 0, 0, 1])])
    return Buffer.concat([iv, Buffer.from([0, 0, 0, 2])])
  }
  var ghash = new GHASH(ck)
  var len = iv.length
  var toPad = len % 16
  ghash.update(iv)
  if (toPad) {
    toPad = 16 - toPad
    ghash.update(Buffer.alloc(toPad, 0))
  }
  ghash.update(Buffer.alloc(8, 0))
  var ivBits = len * 8
  var tail = Buffer.alloc(8)
  tail.writeUIntBE(ivBits, 0, 8)
  ghash.update(tail)
  self._finID = ghash.state
  var out = Buffer.from(self._finID)
  incr32(out)
  return out
}
function StreamCipher (mode, key, iv, decrypt) {
  Transform.call(this)

  var h = Buffer.alloc(4, 0)

  this._cipher = new aes.AES(key)
  var ck = this._cipher.encryptBlock(h)
  this._ghash = new GHASH(ck)
  iv = calcIv(this, iv, ck)

  this._prev = Buffer.from(iv)
  this._cache = Buffer.allocUnsafe(0)
  this._secCache = Buffer.allocUnsafe(0)
  this._decrypt = decrypt
  this._alen = 0
  this._len = 0
  this._mode = mode

  this._authTag = null
  this._called = false
}

inherits(StreamCipher, Transform)

StreamCipher.prototype._update = function (chunk) {
  if (!this._called && this._alen) {
    var rump = 16 - (this._alen % 16)
    if (rump < 16) {
      rump = Buffer.alloc(rump, 0)
      this._ghash.update(rump)
    }
  }

  this._called = true
  var out = this._mode.encrypt(this, chunk)
  if (this._decrypt) {
    this._ghash.update(chunk)
  } else {
    this._ghash.update(out)
  }
  this._len += chunk.length
  return out
}

StreamCipher.prototype._final = function () {
  if (this._decrypt && !this._authTag) throw new Error('Unsupported state or unable to authenticate data')

  var tag = xor(this._ghash.final(this._alen * 8, this._len * 8), this._cipher.encryptBlock(this._finID))
  if (this._decrypt && xorTest(tag, this._authTag)) throw new Error('Unsupported state or unable to authenticate data')

  this._authTag = tag
  this._cipher.scrub()
}

StreamCipher.prototype.getAuthTag = function getAuthTag () {
  if (this._decrypt || !Buffer.isBuffer(this._authTag)) throw new Error('Attempting to get auth tag in unsupported state')

  return this._authTag
}

StreamCipher.prototype.setAuthTag = function setAuthTag (tag) {
  if (!this._decrypt) throw new Error('Attempting to set auth tag in unsupported state')

  this._authTag = tag
}

StreamCipher.prototype.setAAD = function setAAD (buf) {
  if (this._called) throw new Error('Attempting to set AAD in unsupported state')

  this._ghash.update(buf)
  this._alen += buf.length
}

module.exports = StreamCipher

},{"./aes":139,"./ghash":144,"./incr32":145,"buffer-xor":167,"cipher-base":169,"inherits":245,"safe-buffer":326}],141:[function(require,module,exports){
var ciphers = require('./encrypter')
var deciphers = require('./decrypter')
var modes = require('./modes/list.json')

function getCiphers () {
  return Object.keys(modes)
}

exports.createCipher = exports.Cipher = ciphers.createCipher
exports.createCipheriv = exports.Cipheriv = ciphers.createCipheriv
exports.createDecipher = exports.Decipher = deciphers.createDecipher
exports.createDecipheriv = exports.Decipheriv = deciphers.createDecipheriv
exports.listCiphers = exports.getCiphers = getCiphers

},{"./decrypter":142,"./encrypter":143,"./modes/list.json":153}],142:[function(require,module,exports){
var AuthCipher = require('./authCipher')
var Buffer = require('safe-buffer').Buffer
var MODES = require('./modes')
var StreamCipher = require('./streamCipher')
var Transform = require('cipher-base')
var aes = require('./aes')
var ebtk = require('evp_bytestokey')
var inherits = require('inherits')

function Decipher (mode, key, iv) {
  Transform.call(this)

  this._cache = new Splitter()
  this._last = void 0
  this._cipher = new aes.AES(key)
  this._prev = Buffer.from(iv)
  this._mode = mode
  this._autopadding = true
}

inherits(Decipher, Transform)

Decipher.prototype._update = function (data) {
  this._cache.add(data)
  var chunk
  var thing
  var out = []
  while ((chunk = this._cache.get(this._autopadding))) {
    thing = this._mode.decrypt(this, chunk)
    out.push(thing)
  }
  return Buffer.concat(out)
}

Decipher.prototype._final = function () {
  var chunk = this._cache.flush()
  if (this._autopadding) {
    return unpad(this._mode.decrypt(this, chunk))
  } else if (chunk) {
    throw new Error('data not multiple of block length')
  }
}

Decipher.prototype.setAutoPadding = function (setTo) {
  this._autopadding = !!setTo
  return this
}

function Splitter () {
  this.cache = Buffer.allocUnsafe(0)
}

Splitter.prototype.add = function (data) {
  this.cache = Buffer.concat([this.cache, data])
}

Splitter.prototype.get = function (autoPadding) {
  var out
  if (autoPadding) {
    if (this.cache.length > 16) {
      out = this.cache.slice(0, 16)
      this.cache = this.cache.slice(16)
      return out
    }
  } else {
    if (this.cache.length >= 16) {
      out = this.cache.slice(0, 16)
      this.cache = this.cache.slice(16)
      return out
    }
  }

  return null
}

Splitter.prototype.flush = function () {
  if (this.cache.length) return this.cache
}

function unpad (last) {
  var padded = last[15]
  if (padded < 1 || padded > 16) {
    throw new Error('unable to decrypt data')
  }
  var i = -1
  while (++i < padded) {
    if (last[(i + (16 - padded))] !== padded) {
      throw new Error('unable to decrypt data')
    }
  }
  if (padded === 16) return

  return last.slice(0, 16 - padded)
}

function createDecipheriv (suite, password, iv) {
  var config = MODES[suite.toLowerCase()]
  if (!config) throw new TypeError('invalid suite type')

  if (typeof iv === 'string') iv = Buffer.from(iv)
  if (config.mode !== 'GCM' && iv.length !== config.iv) throw new TypeError('invalid iv length ' + iv.length)

  if (typeof password === 'string') password = Buffer.from(password)
  if (password.length !== config.key / 8) throw new TypeError('invalid key length ' + password.length)

  if (config.type === 'stream') {
    return new StreamCipher(config.module, password, iv, true)
  } else if (config.type === 'auth') {
    return new AuthCipher(config.module, password, iv, true)
  }

  return new Decipher(config.module, password, iv)
}

function createDecipher (suite, password) {
  var config = MODES[suite.toLowerCase()]
  if (!config) throw new TypeError('invalid suite type')

  var keys = ebtk(password, false, config.key, config.iv)
  return createDecipheriv(suite, keys.key, keys.iv)
}

exports.createDecipher = createDecipher
exports.createDecipheriv = createDecipheriv

},{"./aes":139,"./authCipher":140,"./modes":152,"./streamCipher":155,"cipher-base":169,"evp_bytestokey":206,"inherits":245,"safe-buffer":326}],143:[function(require,module,exports){
var MODES = require('./modes')
var AuthCipher = require('./authCipher')
var Buffer = require('safe-buffer').Buffer
var StreamCipher = require('./streamCipher')
var Transform = require('cipher-base')
var aes = require('./aes')
var ebtk = require('evp_bytestokey')
var inherits = require('inherits')

function Cipher (mode, key, iv) {
  Transform.call(this)

  this._cache = new Splitter()
  this._cipher = new aes.AES(key)
  this._prev = Buffer.from(iv)
  this._mode = mode
  this._autopadding = true
}

inherits(Cipher, Transform)

Cipher.prototype._update = function (data) {
  this._cache.add(data)
  var chunk
  var thing
  var out = []

  while ((chunk = this._cache.get())) {
    thing = this._mode.encrypt(this, chunk)
    out.push(thing)
  }

  return Buffer.concat(out)
}

var PADDING = Buffer.alloc(16, 0x10)

Cipher.prototype._final = function () {
  var chunk = this._cache.flush()
  if (this._autopadding) {
    chunk = this._mode.encrypt(this, chunk)
    this._cipher.scrub()
    return chunk
  }

  if (!chunk.equals(PADDING)) {
    this._cipher.scrub()
    throw new Error('data not multiple of block length')
  }
}

Cipher.prototype.setAutoPadding = function (setTo) {
  this._autopadding = !!setTo
  return this
}

function Splitter () {
  this.cache = Buffer.allocUnsafe(0)
}

Splitter.prototype.add = function (data) {
  this.cache = Buffer.concat([this.cache, data])
}

Splitter.prototype.get = function () {
  if (this.cache.length > 15) {
    var out = this.cache.slice(0, 16)
    this.cache = this.cache.slice(16)
    return out
  }
  return null
}

Splitter.prototype.flush = function () {
  var len = 16 - this.cache.length
  var padBuff = Buffer.allocUnsafe(len)

  var i = -1
  while (++i < len) {
    padBuff.writeUInt8(len, i)
  }

  return Buffer.concat([this.cache, padBuff])
}

function createCipheriv (suite, password, iv) {
  var config = MODES[suite.toLowerCase()]
  if (!config) throw new TypeError('invalid suite type')

  if (typeof password === 'string') password = Buffer.from(password)
  if (password.length !== config.key / 8) throw new TypeError('invalid key length ' + password.length)

  if (typeof iv === 'string') iv = Buffer.from(iv)
  if (config.mode !== 'GCM' && iv.length !== config.iv) throw new TypeError('invalid iv length ' + iv.length)

  if (config.type === 'stream') {
    return new StreamCipher(config.module, password, iv)
  } else if (config.type === 'auth') {
    return new AuthCipher(config.module, password, iv)
  }

  return new Cipher(config.module, password, iv)
}

function createCipher (suite, password) {
  var config = MODES[suite.toLowerCase()]
  if (!config) throw new TypeError('invalid suite type')

  var keys = ebtk(password, false, config.key, config.iv)
  return createCipheriv(suite, keys.key, keys.iv)
}

exports.createCipheriv = createCipheriv
exports.createCipher = createCipher

},{"./aes":139,"./authCipher":140,"./modes":152,"./streamCipher":155,"cipher-base":169,"evp_bytestokey":206,"inherits":245,"safe-buffer":326}],144:[function(require,module,exports){
var Buffer = require('safe-buffer').Buffer
var ZEROES = Buffer.alloc(16, 0)

function toArray (buf) {
  return [
    buf.readUInt32BE(0),
    buf.readUInt32BE(4),
    buf.readUInt32BE(8),
    buf.readUInt32BE(12)
  ]
}

function fromArray (out) {
  var buf = Buffer.allocUnsafe(16)
  buf.writeUInt32BE(out[0] >>> 0, 0)
  buf.writeUInt32BE(out[1] >>> 0, 4)
  buf.writeUInt32BE(out[2] >>> 0, 8)
  buf.writeUInt32BE(out[3] >>> 0, 12)
  return buf
}

function GHASH (key) {
  this.h = key
  this.state = Buffer.alloc(16, 0)
  this.cache = Buffer.allocUnsafe(0)
}

// from http://bitwiseshiftleft.github.io/sjcl/doc/symbols/src/core_gcm.js.html
// by Juho Vähä-Herttua
GHASH.prototype.ghash = function (block) {
  var i = -1
  while (++i < block.length) {
    this.state[i] ^= block[i]
  }
  this._multiply()
}

GHASH.prototype._multiply = function () {
  var Vi = toArray(this.h)
  var Zi = [0, 0, 0, 0]
  var j, xi, lsbVi
  var i = -1
  while (++i < 128) {
    xi = (this.state[~~(i / 8)] & (1 << (7 - (i % 8)))) !== 0
    if (xi) {
      // Z_i+1 = Z_i ^ V_i
      Zi[0] ^= Vi[0]
      Zi[1] ^= Vi[1]
      Zi[2] ^= Vi[2]
      Zi[3] ^= Vi[3]
    }

    // Store the value of LSB(V_i)
    lsbVi = (Vi[3] & 1) !== 0

    // V_i+1 = V_i >> 1
    for (j = 3; j > 0; j--) {
      Vi[j] = (Vi[j] >>> 1) | ((Vi[j - 1] & 1) << 31)
    }
    Vi[0] = Vi[0] >>> 1

    // If LSB(V_i) is 1, V_i+1 = (V_i >> 1) ^ R
    if (lsbVi) {
      Vi[0] = Vi[0] ^ (0xe1 << 24)
    }
  }
  this.state = fromArray(Zi)
}

GHASH.prototype.update = function (buf) {
  this.cache = Buffer.concat([this.cache, buf])
  var chunk
  while (this.cache.length >= 16) {
    chunk = this.cache.slice(0, 16)
    this.cache = this.cache.slice(16)
    this.ghash(chunk)
  }
}

GHASH.prototype.final = function (abl, bl) {
  if (this.cache.length) {
    this.ghash(Buffer.concat([this.cache, ZEROES], 16))
  }

  this.ghash(fromArray([0, abl, 0, bl]))
  return this.state
}

module.exports = GHASH

},{"safe-buffer":326}],145:[function(require,module,exports){
function incr32 (iv) {
  var len = iv.length
  var item
  while (len--) {
    item = iv.readUInt8(len)
    if (item === 255) {
      iv.writeUInt8(0, len)
    } else {
      item++
      iv.writeUInt8(item, len)
      break
    }
  }
}
module.exports = incr32

},{}],146:[function(require,module,exports){
var xor = require('buffer-xor')

exports.encrypt = function (self, block) {
  var data = xor(block, self._prev)

  self._prev = self._cipher.encryptBlock(data)
  return self._prev
}

exports.decrypt = function (self, block) {
  var pad = self._prev

  self._prev = block
  var out = self._cipher.decryptBlock(block)

  return xor(out, pad)
}

},{"buffer-xor":167}],147:[function(require,module,exports){
var Buffer = require('safe-buffer').Buffer
var xor = require('buffer-xor')

function encryptStart (self, data, decrypt) {
  var len = data.length
  var out = xor(data, self._cache)
  self._cache = self._cache.slice(len)
  self._prev = Buffer.concat([self._prev, decrypt ? data : out])
  return out
}

exports.encrypt = function (self, data, decrypt) {
  var out = Buffer.allocUnsafe(0)
  var len

  while (data.length) {
    if (self._cache.length === 0) {
      self._cache = self._cipher.encryptBlock(self._prev)
      self._prev = Buffer.allocUnsafe(0)
    }

    if (self._cache.length <= data.length) {
      len = self._cache.length
      out = Buffer.concat([out, encryptStart(self, data.slice(0, len), decrypt)])
      data = data.slice(len)
    } else {
      out = Buffer.concat([out, encryptStart(self, data, decrypt)])
      break
    }
  }

  return out
}

},{"buffer-xor":167,"safe-buffer":326}],148:[function(require,module,exports){
var Buffer = require('safe-buffer').Buffer

function encryptByte (self, byteParam, decrypt) {
  var pad
  var i = -1
  var len = 8
  var out = 0
  var bit, value
  while (++i < len) {
    pad = self._cipher.encryptBlock(self._prev)
    bit = (byteParam & (1 << (7 - i))) ? 0x80 : 0
    value = pad[0] ^ bit
    out += ((value & 0x80) >> (i % 8))
    self._prev = shiftIn(self._prev, decrypt ? bit : value)
  }
  return out
}

function shiftIn (buffer, value) {
  var len = buffer.length
  var i = -1
  var out = Buffer.allocUnsafe(buffer.length)
  buffer = Buffer.concat([buffer, Buffer.from([value])])

  while (++i < len) {
    out[i] = buffer[i] << 1 | buffer[i + 1] >> (7)
  }

  return out
}

exports.encrypt = function (self, chunk, decrypt) {
  var len = chunk.length
  var out = Buffer.allocUnsafe(len)
  var i = -1

  while (++i < len) {
    out[i] = encryptByte(self, chunk[i], decrypt)
  }

  return out
}

},{"safe-buffer":326}],149:[function(require,module,exports){
var Buffer = require('safe-buffer').Buffer

function encryptByte (self, byteParam, decrypt) {
  var pad = self._cipher.encryptBlock(self._prev)
  var out = pad[0] ^ byteParam

  self._prev = Buffer.concat([
    self._prev.slice(1),
    Buffer.from([decrypt ? byteParam : out])
  ])

  return out
}

exports.encrypt = function (self, chunk, decrypt) {
  var len = chunk.length
  var out = Buffer.allocUnsafe(len)
  var i = -1

  while (++i < len) {
    out[i] = encryptByte(self, chunk[i], decrypt)
  }

  return out
}

},{"safe-buffer":326}],150:[function(require,module,exports){
var xor = require('buffer-xor')
var Buffer = require('safe-buffer').Buffer
var incr32 = require('../incr32')

function getBlock (self) {
  var out = self._cipher.encryptBlockRaw(self._prev)
  incr32(self._prev)
  return out
}

var blockSize = 16
exports.encrypt = function (self, chunk) {
  var chunkNum = Math.ceil(chunk.length / blockSize)
  var start = self._cache.length
  self._cache = Buffer.concat([
    self._cache,
    Buffer.allocUnsafe(chunkNum * blockSize)
  ])
  for (var i = 0; i < chunkNum; i++) {
    var out = getBlock(self)
    var offset = start + i * blockSize
    self._cache.writeUInt32BE(out[0], offset + 0)
    self._cache.writeUInt32BE(out[1], offset + 4)
    self._cache.writeUInt32BE(out[2], offset + 8)
    self._cache.writeUInt32BE(out[3], offset + 12)
  }
  var pad = self._cache.slice(0, chunk.length)
  self._cache = self._cache.slice(chunk.length)
  return xor(chunk, pad)
}

},{"../incr32":145,"buffer-xor":167,"safe-buffer":326}],151:[function(require,module,exports){
exports.encrypt = function (self, block) {
  return self._cipher.encryptBlock(block)
}

exports.decrypt = function (self, block) {
  return self._cipher.decryptBlock(block)
}

},{}],152:[function(require,module,exports){
var modeModules = {
  ECB: require('./ecb'),
  CBC: require('./cbc'),
  CFB: require('./cfb'),
  CFB8: require('./cfb8'),
  CFB1: require('./cfb1'),
  OFB: require('./ofb'),
  CTR: require('./ctr'),
  GCM: require('./ctr')
}

var modes = require('./list.json')

for (var key in modes) {
  modes[key].module = modeModules[modes[key].mode]
}

module.exports = modes

},{"./cbc":146,"./cfb":147,"./cfb1":148,"./cfb8":149,"./ctr":150,"./ecb":151,"./list.json":153,"./ofb":154}],153:[function(require,module,exports){
module.exports={
  "aes-128-ecb": {
    "cipher": "AES",
    "key": 128,
    "iv": 0,
    "mode": "ECB",
    "type": "block"
  },
  "aes-192-ecb": {
    "cipher": "AES",
    "key": 192,
    "iv": 0,
    "mode": "ECB",
    "type": "block"
  },
  "aes-256-ecb": {
    "cipher": "AES",
    "key": 256,
    "iv": 0,
    "mode": "ECB",
    "type": "block"
  },
  "aes-128-cbc": {
    "cipher": "AES",
    "key": 128,
    "iv": 16,
    "mode": "CBC",
    "type": "block"
  },
  "aes-192-cbc": {
    "cipher": "AES",
    "key": 192,
    "iv": 16,
    "mode": "CBC",
    "type": "block"
  },
  "aes-256-cbc": {
    "cipher": "AES",
    "key": 256,
    "iv": 16,
    "mode": "CBC",
    "type": "block"
  },
  "aes128": {
    "cipher": "AES",
    "key": 128,
    "iv": 16,
    "mode": "CBC",
    "type": "block"
  },
  "aes192": {
    "cipher": "AES",
    "key": 192,
    "iv": 16,
    "mode": "CBC",
    "type": "block"
  },
  "aes256": {
    "cipher": "AES",
    "key": 256,
    "iv": 16,
    "mode": "CBC",
    "type": "block"
  },
  "aes-128-cfb": {
    "cipher": "AES",
    "key": 128,
    "iv": 16,
    "mode": "CFB",
    "type": "stream"
  },
  "aes-192-cfb": {
    "cipher": "AES",
    "key": 192,
    "iv": 16,
    "mode": "CFB",
    "type": "stream"
  },
  "aes-256-cfb": {
    "cipher": "AES",
    "key": 256,
    "iv": 16,
    "mode": "CFB",
    "type": "stream"
  },
  "aes-128-cfb8": {
    "cipher": "AES",
    "key": 128,
    "iv": 16,
    "mode": "CFB8",
    "type": "stream"
  },
  "aes-192-cfb8": {
    "cipher": "AES",
    "key": 192,
    "iv": 16,
    "mode": "CFB8",
    "type": "stream"
  },
  "aes-256-cfb8": {
    "cipher": "AES",
    "key": 256,
    "iv": 16,
    "mode": "CFB8",
    "type": "stream"
  },
  "aes-128-cfb1": {
    "cipher": "AES",
    "key": 128,
    "iv": 16,
    "mode": "CFB1",
    "type": "stream"
  },
  "aes-192-cfb1": {
    "cipher": "AES",
    "key": 192,
    "iv": 16,
    "mode": "CFB1",
    "type": "stream"
  },
  "aes-256-cfb1": {
    "cipher": "AES",
    "key": 256,
    "iv": 16,
    "mode": "CFB1",
    "type": "stream"
  },
  "aes-128-ofb": {
    "cipher": "AES",
    "key": 128,
    "iv": 16,
    "mode": "OFB",
    "type": "stream"
  },
  "aes-192-ofb": {
    "cipher": "AES",
    "key": 192,
    "iv": 16,
    "mode": "OFB",
    "type": "stream"
  },
  "aes-256-ofb": {
    "cipher": "AES",
    "key": 256,
    "iv": 16,
    "mode": "OFB",
    "type": "stream"
  },
  "aes-128-ctr": {
    "cipher": "AES",
    "key": 128,
    "iv": 16,
    "mode": "CTR",
    "type": "stream"
  },
  "aes-192-ctr": {
    "cipher": "AES",
    "key": 192,
    "iv": 16,
    "mode": "CTR",
    "type": "stream"
  },
  "aes-256-ctr": {
    "cipher": "AES",
    "key": 256,
    "iv": 16,
    "mode": "CTR",
    "type": "stream"
  },
  "aes-128-gcm": {
    "cipher": "AES",
    "key": 128,
    "iv": 12,
    "mode": "GCM",
    "type": "auth"
  },
  "aes-192-gcm": {
    "cipher": "AES",
    "key": 192,
    "iv": 12,
    "mode": "GCM",
    "type": "auth"
  },
  "aes-256-gcm": {
    "cipher": "AES",
    "key": 256,
    "iv": 12,
    "mode": "GCM",
    "type": "auth"
  }
}

},{}],154:[function(require,module,exports){
(function (Buffer){
var xor = require('buffer-xor')

function getBlock (self) {
  self._prev = self._cipher.encryptBlock(self._prev)
  return self._prev
}

exports.encrypt = function (self, chunk) {
  while (self._cache.length < chunk.length) {
    self._cache = Buffer.concat([self._cache, getBlock(self)])
  }

  var pad = self._cache.slice(0, chunk.length)
  self._cache = self._cache.slice(chunk.length)
  return xor(chunk, pad)
}

}).call(this,require("buffer").Buffer)
},{"buffer":168,"buffer-xor":167}],155:[function(require,module,exports){
var aes = require('./aes')
var Buffer = require('safe-buffer').Buffer
var Transform = require('cipher-base')
var inherits = require('inherits')

function StreamCipher (mode, key, iv, decrypt) {
  Transform.call(this)

  this._cipher = new aes.AES(key)
  this._prev = Buffer.from(iv)
  this._cache = Buffer.allocUnsafe(0)
  this._secCache = Buffer.allocUnsafe(0)
  this._decrypt = decrypt
  this._mode = mode
}

inherits(StreamCipher, Transform)

StreamCipher.prototype._update = function (chunk) {
  return this._mode.encrypt(this, chunk, this._decrypt)
}

StreamCipher.prototype._final = function () {
  this._cipher.scrub()
}

module.exports = StreamCipher

},{"./aes":139,"cipher-base":169,"inherits":245,"safe-buffer":326}],156:[function(require,module,exports){
var DES = require('browserify-des')
var aes = require('browserify-aes/browser')
var aesModes = require('browserify-aes/modes')
var desModes = require('browserify-des/modes')
var ebtk = require('evp_bytestokey')

function createCipher (suite, password) {
  suite = suite.toLowerCase()

  var keyLen, ivLen
  if (aesModes[suite]) {
    keyLen = aesModes[suite].key
    ivLen = aesModes[suite].iv
  } else if (desModes[suite]) {
    keyLen = desModes[suite].key * 8
    ivLen = desModes[suite].iv
  } else {
    throw new TypeError('invalid suite type')
  }

  var keys = ebtk(password, false, keyLen, ivLen)
  return createCipheriv(suite, keys.key, keys.iv)
}

function createDecipher (suite, password) {
  suite = suite.toLowerCase()

  var keyLen, ivLen
  if (aesModes[suite]) {
    keyLen = aesModes[suite].key
    ivLen = aesModes[suite].iv
  } else if (desModes[suite]) {
    keyLen = desModes[suite].key * 8
    ivLen = desModes[suite].iv
  } else {
    throw new TypeError('invalid suite type')
  }

  var keys = ebtk(password, false, keyLen, ivLen)
  return createDecipheriv(suite, keys.key, keys.iv)
}

function createCipheriv (suite, key, iv) {
  suite = suite.toLowerCase()
  if (aesModes[suite]) return aes.createCipheriv(suite, key, iv)
  if (desModes[suite]) return new DES({ key: key, iv: iv, mode: suite })

  throw new TypeError('invalid suite type')
}

function createDecipheriv (suite, key, iv) {
  suite = suite.toLowerCase()
  if (aesModes[suite]) return aes.createDecipheriv(suite, key, iv)
  if (desModes[suite]) return new DES({ key: key, iv: iv, mode: suite, decrypt: true })

  throw new TypeError('invalid suite type')
}

function getCiphers () {
  return Object.keys(desModes).concat(aes.getCiphers())
}

exports.createCipher = exports.Cipher = createCipher
exports.createCipheriv = exports.Cipheriv = createCipheriv
exports.createDecipher = exports.Decipher = createDecipher
exports.createDecipheriv = exports.Decipheriv = createDecipheriv
exports.listCiphers = exports.getCiphers = getCiphers

},{"browserify-aes/browser":141,"browserify-aes/modes":152,"browserify-des":157,"browserify-des/modes":158,"evp_bytestokey":206}],157:[function(require,module,exports){
var CipherBase = require('cipher-base')
var des = require('des.js')
var inherits = require('inherits')
var Buffer = require('safe-buffer').Buffer

var modes = {
  'des-ede3-cbc': des.CBC.instantiate(des.EDE),
  'des-ede3': des.EDE,
  'des-ede-cbc': des.CBC.instantiate(des.EDE),
  'des-ede': des.EDE,
  'des-cbc': des.CBC.instantiate(des.DES),
  'des-ecb': des.DES
}
modes.des = modes['des-cbc']
modes.des3 = modes['des-ede3-cbc']
module.exports = DES
inherits(DES, CipherBase)
function DES (opts) {
  CipherBase.call(this)
  var modeName = opts.mode.toLowerCase()
  var mode = modes[modeName]
  var type
  if (opts.decrypt) {
    type = 'decrypt'
  } else {
    type = 'encrypt'
  }
  var key = opts.key
  if (!Buffer.isBuffer(key)) {
    key = Buffer.from(key)
  }
  if (modeName === 'des-ede' || modeName === 'des-ede-cbc') {
    key = Buffer.concat([key, key.slice(0, 8)])
  }
  var iv = opts.iv
  if (!Buffer.isBuffer(iv)) {
    iv = Buffer.from(iv)
  }
  this._des = mode.create({
    key: key,
    iv: iv,
    type: type
  })
}
DES.prototype._update = function (data) {
  return Buffer.from(this._des.update(data))
}
DES.prototype._final = function () {
  return Buffer.from(this._des.final())
}

},{"cipher-base":169,"des.js":179,"inherits":245,"safe-buffer":326}],158:[function(require,module,exports){
exports['des-ecb'] = {
  key: 8,
  iv: 0
}
exports['des-cbc'] = exports.des = {
  key: 8,
  iv: 8
}
exports['des-ede3-cbc'] = exports.des3 = {
  key: 24,
  iv: 8
}
exports['des-ede3'] = {
  key: 24,
  iv: 0
}
exports['des-ede-cbc'] = {
  key: 16,
  iv: 8
}
exports['des-ede'] = {
  key: 16,
  iv: 0
}

},{}],159:[function(require,module,exports){
(function (Buffer){
var bn = require('bn.js');
var randomBytes = require('randombytes');
module.exports = crt;
function blind(priv) {
  var r = getr(priv);
  var blinder = r.toRed(bn.mont(priv.modulus))
  .redPow(new bn(priv.publicExponent)).fromRed();
  return {
    blinder: blinder,
    unblinder:r.invm(priv.modulus)
  };
}
function crt(msg, priv) {
  var blinds = blind(priv);
  var len = priv.modulus.byteLength();
  var mod = bn.mont(priv.modulus);
  var blinded = new bn(msg).mul(blinds.blinder).umod(priv.modulus);
  var c1 = blinded.toRed(bn.mont(priv.prime1));
  var c2 = blinded.toRed(bn.mont(priv.prime2));
  var qinv = priv.coefficient;
  var p = priv.prime1;
  var q = priv.prime2;
  var m1 = c1.redPow(priv.exponent1);
  var m2 = c2.redPow(priv.exponent2);
  m1 = m1.fromRed();
  m2 = m2.fromRed();
  var h = m1.isub(m2).imul(qinv).umod(p);
  h.imul(q);
  m2.iadd(h);
  return new Buffer(m2.imul(blinds.unblinder).umod(priv.modulus).toArray(false, len));
}
crt.getr = getr;
function getr(priv) {
  var len = priv.modulus.byteLength();
  var r = new bn(randomBytes(len));
  while (r.cmp(priv.modulus) >=  0 || !r.umod(priv.prime1) || !r.umod(priv.prime2)) {
    r = new bn(randomBytes(len));
  }
  return r;
}

}).call(this,require("buffer").Buffer)
},{"bn.js":136,"buffer":168,"randombytes":323}],160:[function(require,module,exports){
module.exports = require('./browser/algorithms.json')

},{"./browser/algorithms.json":161}],161:[function(require,module,exports){
module.exports={
  "sha224WithRSAEncryption": {
    "sign": "rsa",
    "hash": "sha224",
    "id": "302d300d06096086480165030402040500041c"
  },
  "RSA-SHA224": {
    "sign": "ecdsa/rsa",
    "hash": "sha224",
    "id": "302d300d06096086480165030402040500041c"
  },
  "sha256WithRSAEncryption": {
    "sign": "rsa",
    "hash": "sha256",
    "id": "3031300d060960864801650304020105000420"
  },
  "RSA-SHA256": {
    "sign": "ecdsa/rsa",
    "hash": "sha256",
    "id": "3031300d060960864801650304020105000420"
  },
  "sha384WithRSAEncryption": {
    "sign": "rsa",
    "hash": "sha384",
    "id": "3041300d060960864801650304020205000430"
  },
  "RSA-SHA384": {
    "sign": "ecdsa/rsa",
    "hash": "sha384",
    "id": "3041300d060960864801650304020205000430"
  },
  "sha512WithRSAEncryption": {
    "sign": "rsa",
    "hash": "sha512",
    "id": "3051300d060960864801650304020305000440"
  },
  "RSA-SHA512": {
    "sign": "ecdsa/rsa",
    "hash": "sha512",
    "id": "3051300d060960864801650304020305000440"
  },
  "RSA-SHA1": {
    "sign": "rsa",
    "hash": "sha1",
    "id": "3021300906052b0e03021a05000414"
  },
  "ecdsa-with-SHA1": {
    "sign": "ecdsa",
    "hash": "sha1",
    "id": ""
  },
  "sha256": {
    "sign": "ecdsa",
    "hash": "sha256",
    "id": ""
  },
  "sha224": {
    "sign": "ecdsa",
    "hash": "sha224",
    "id": ""
  },
  "sha384": {
    "sign": "ecdsa",
    "hash": "sha384",
    "id": ""
  },
  "sha512": {
    "sign": "ecdsa",
    "hash": "sha512",
    "id": ""
  },
  "DSA-SHA": {
    "sign": "dsa",
    "hash": "sha1",
    "id": ""
  },
  "DSA-SHA1": {
    "sign": "dsa",
    "hash": "sha1",
    "id": ""
  },
  "DSA": {
    "sign": "dsa",
    "hash": "sha1",
    "id": ""
  },
  "DSA-WITH-SHA224": {
    "sign": "dsa",
    "hash": "sha224",
    "id": ""
  },
  "DSA-SHA224": {
    "sign": "dsa",
    "hash": "sha224",
    "id": ""
  },
  "DSA-WITH-SHA256": {
    "sign": "dsa",
    "hash": "sha256",
    "id": ""
  },
  "DSA-SHA256": {
    "sign": "dsa",
    "hash": "sha256",
    "id": ""
  },
  "DSA-WITH-SHA384": {
    "sign": "dsa",
    "hash": "sha384",
    "id": ""
  },
  "DSA-SHA384": {
    "sign": "dsa",
    "hash": "sha384",
    "id": ""
  },
  "DSA-WITH-SHA512": {
    "sign": "dsa",
    "hash": "sha512",
    "id": ""
  },
  "DSA-SHA512": {
    "sign": "dsa",
    "hash": "sha512",
    "id": ""
  },
  "DSA-RIPEMD160": {
    "sign": "dsa",
    "hash": "rmd160",
    "id": ""
  },
  "ripemd160WithRSA": {
    "sign": "rsa",
    "hash": "rmd160",
    "id": "3021300906052b2403020105000414"
  },
  "RSA-RIPEMD160": {
    "sign": "rsa",
    "hash": "rmd160",
    "id": "3021300906052b2403020105000414"
  },
  "md5WithRSAEncryption": {
    "sign": "rsa",
    "hash": "md5",
    "id": "3020300c06082a864886f70d020505000410"
  },
  "RSA-MD5": {
    "sign": "rsa",
    "hash": "md5",
    "id": "3020300c06082a864886f70d020505000410"
  }
}

},{}],162:[function(require,module,exports){
module.exports={
  "1.3.132.0.10": "secp256k1",
  "1.3.132.0.33": "p224",
  "1.2.840.10045.3.1.1": "p192",
  "1.2.840.10045.3.1.7": "p256",
  "1.3.132.0.34": "p384",
  "1.3.132.0.35": "p521"
}

},{}],163:[function(require,module,exports){
(function (Buffer){
var createHash = require('create-hash')
var stream = require('stream')
var inherits = require('inherits')
var sign = require('./sign')
var verify = require('./verify')

var algorithms = require('./algorithms.json')
Object.keys(algorithms).forEach(function (key) {
  algorithms[key].id = new Buffer(algorithms[key].id, 'hex')
  algorithms[key.toLowerCase()] = algorithms[key]
})

function Sign (algorithm) {
  stream.Writable.call(this)

  var data = algorithms[algorithm]
  if (!data) throw new Error('Unknown message digest')

  this._hashType = data.hash
  this._hash = createHash(data.hash)
  this._tag = data.id
  this._signType = data.sign
}
inherits(Sign, stream.Writable)

Sign.prototype._write = function _write (data, _, done) {
  this._hash.update(data)
  done()
}

Sign.prototype.update = function update (data, enc) {
  if (typeof data === 'string') data = new Buffer(data, enc)

  this._hash.update(data)
  return this
}

Sign.prototype.sign = function signMethod (key, enc) {
  this.end()
  var hash = this._hash.digest()
  var sig = sign(hash, key, this._hashType, this._signType, this._tag)

  return enc ? sig.toString(enc) : sig
}

function Verify (algorithm) {
  stream.Writable.call(this)

  var data = algorithms[algorithm]
  if (!data) throw new Error('Unknown message digest')

  this._hash = createHash(data.hash)
  this._tag = data.id
  this._signType = data.sign
}
inherits(Verify, stream.Writable)

Verify.prototype._write = function _write (data, _, done) {
  this._hash.update(data)
  done()
}

Verify.prototype.update = function update (data, enc) {
  if (typeof data === 'string') data = new Buffer(data, enc)

  this._hash.update(data)
  return this
}

Verify.prototype.verify = function verifyMethod (key, sig, enc) {
  if (typeof sig === 'string') sig = new Buffer(sig, enc)

  this.end()
  var hash = this._hash.digest()
  return verify(sig, hash, key, this._signType, this._tag)
}

function createSign (algorithm) {
  return new Sign(algorithm)
}

function createVerify (algorithm) {
  return new Verify(algorithm)
}

module.exports = {
  Sign: createSign,
  Verify: createVerify,
  createSign: createSign,
  createVerify: createVerify
}

}).call(this,require("buffer").Buffer)
},{"./algorithms.json":161,"./sign":164,"./verify":165,"buffer":168,"create-hash":172,"inherits":245,"stream":337}],164:[function(require,module,exports){
(function (Buffer){
// much of this based on https://github.com/indutny/self-signed/blob/gh-pages/lib/rsa.js
var createHmac = require('create-hmac')
var crt = require('browserify-rsa')
var EC = require('elliptic').ec
var BN = require('bn.js')
var parseKeys = require('parse-asn1')
var curves = require('./curves.json')

function sign (hash, key, hashType, signType, tag) {
  var priv = parseKeys(key)
  if (priv.curve) {
    // rsa keys can be interpreted as ecdsa ones in openssl
    if (signType !== 'ecdsa' && signType !== 'ecdsa/rsa') throw new Error('wrong private key type')
    return ecSign(hash, priv)
  } else if (priv.type === 'dsa') {
    if (signType !== 'dsa') throw new Error('wrong private key type')
    return dsaSign(hash, priv, hashType)
  } else {
    if (signType !== 'rsa' && signType !== 'ecdsa/rsa') throw new Error('wrong private key type')
  }
  hash = Buffer.concat([tag, hash])
  var len = priv.modulus.byteLength()
  var pad = [ 0, 1 ]
  while (hash.length + pad.length + 1 < len) pad.push(0xff)
  pad.push(0x00)
  var i = -1
  while (++i < hash.length) pad.push(hash[i])

  var out = crt(pad, priv)
  return out
}

function ecSign (hash, priv) {
  var curveId = curves[priv.curve.join('.')]
  if (!curveId) throw new Error('unknown curve ' + priv.curve.join('.'))

  var curve = new EC(curveId)
  var key = curve.keyFromPrivate(priv.privateKey)
  var out = key.sign(hash)

  return new Buffer(out.toDER())
}

function dsaSign (hash, priv, algo) {
  var x = priv.params.priv_key
  var p = priv.params.p
  var q = priv.params.q
  var g = priv.params.g
  var r = new BN(0)
  var k
  var H = bits2int(hash, q).mod(q)
  var s = false
  var kv = getKey(x, q, hash, algo)
  while (s === false) {
    k = makeKey(q, kv, algo)
    r = makeR(g, k, p, q)
    s = k.invm(q).imul(H.add(x.mul(r))).mod(q)
    if (s.cmpn(0) === 0) {
      s = false
      r = new BN(0)
    }
  }
  return toDER(r, s)
}

function toDER (r, s) {
  r = r.toArray()
  s = s.toArray()

  // Pad values
  if (r[0] & 0x80) r = [ 0 ].concat(r)
  if (s[0] & 0x80) s = [ 0 ].concat(s)

  var total = r.length + s.length + 4
  var res = [ 0x30, total, 0x02, r.length ]
  res = res.concat(r, [ 0x02, s.length ], s)
  return new Buffer(res)
}

function getKey (x, q, hash, algo) {
  x = new Buffer(x.toArray())
  if (x.length < q.byteLength()) {
    var zeros = new Buffer(q.byteLength() - x.length)
    zeros.fill(0)
    x = Buffer.concat([ zeros, x ])
  }
  var hlen = hash.length
  var hbits = bits2octets(hash, q)
  var v = new Buffer(hlen)
  v.fill(1)
  var k = new Buffer(hlen)
  k.fill(0)
  k = createHmac(algo, k).update(v).update(new Buffer([ 0 ])).update(x).update(hbits).digest()
  v = createHmac(algo, k).update(v).digest()
  k = createHmac(algo, k).update(v).update(new Buffer([ 1 ])).update(x).update(hbits).digest()
  v = createHmac(algo, k).update(v).digest()
  return { k: k, v: v }
}

function bits2int (obits, q) {
  var bits = new BN(obits)
  var shift = (obits.length << 3) - q.bitLength()
  if (shift > 0) bits.ishrn(shift)
  return bits
}

function bits2octets (bits, q) {
  bits = bits2int(bits, q)
  bits = bits.mod(q)
  var out = new Buffer(bits.toArray())
  if (out.length < q.byteLength()) {
    var zeros = new Buffer(q.byteLength() - out.length)
    zeros.fill(0)
    out = Buffer.concat([ zeros, out ])
  }
  return out
}

function makeKey (q, kv, algo) {
  var t
  var k

  do {
    t = new Buffer(0)

    while (t.length * 8 < q.bitLength()) {
      kv.v = createHmac(algo, kv.k).update(kv.v).digest()
      t = Buffer.concat([ t, kv.v ])
    }

    k = bits2int(t, q)
    kv.k = createHmac(algo, kv.k).update(kv.v).update(new Buffer([ 0 ])).digest()
    kv.v = createHmac(algo, kv.k).update(kv.v).digest()
  } while (k.cmp(q) !== -1)

  return k
}

function makeR (g, k, p, q) {
  return g.toRed(BN.mont(p)).redPow(k).fromRed().mod(q)
}

module.exports = sign
module.exports.getKey = getKey
module.exports.makeKey = makeKey

}).call(this,require("buffer").Buffer)
},{"./curves.json":162,"bn.js":136,"browserify-rsa":159,"buffer":168,"create-hmac":174,"elliptic":189,"parse-asn1":309}],165:[function(require,module,exports){
(function (Buffer){
// much of this based on https://github.com/indutny/self-signed/blob/gh-pages/lib/rsa.js
var BN = require('bn.js')
var EC = require('elliptic').ec
var parseKeys = require('parse-asn1')
var curves = require('./curves.json')

function verify (sig, hash, key, signType, tag) {
  var pub = parseKeys(key)
  if (pub.type === 'ec') {
    // rsa keys can be interpreted as ecdsa ones in openssl
    if (signType !== 'ecdsa' && signType !== 'ecdsa/rsa') throw new Error('wrong public key type')
    return ecVerify(sig, hash, pub)
  } else if (pub.type === 'dsa') {
    if (signType !== 'dsa') throw new Error('wrong public key type')
    return dsaVerify(sig, hash, pub)
  } else {
    if (signType !== 'rsa' && signType !== 'ecdsa/rsa') throw new Error('wrong public key type')
  }
  hash = Buffer.concat([tag, hash])
  var len = pub.modulus.byteLength()
  var pad = [ 1 ]
  var padNum = 0
  while (hash.length + pad.length + 2 < len) {
    pad.push(0xff)
    padNum++
  }
  pad.push(0x00)
  var i = -1
  while (++i < hash.length) {
    pad.push(hash[i])
  }
  pad = new Buffer(pad)
  var red = BN.mont(pub.modulus)
  sig = new BN(sig).toRed(red)

  sig = sig.redPow(new BN(pub.publicExponent))
  sig = new Buffer(sig.fromRed().toArray())
  var out = padNum < 8 ? 1 : 0
  len = Math.min(sig.length, pad.length)
  if (sig.length !== pad.length) out = 1

  i = -1
  while (++i < len) out |= sig[i] ^ pad[i]
  return out === 0
}

function ecVerify (sig, hash, pub) {
  var curveId = curves[pub.data.algorithm.curve.join('.')]
  if (!curveId) throw new Error('unknown curve ' + pub.data.algorithm.curve.join('.'))

  var curve = new EC(curveId)
  var pubkey = pub.data.subjectPrivateKey.data

  return curve.verify(hash, sig, pubkey)
}

function dsaVerify (sig, hash, pub) {
  var p = pub.data.p
  var q = pub.data.q
  var g = pub.data.g
  var y = pub.data.pub_key
  var unpacked = parseKeys.signature.decode(sig, 'der')
  var s = unpacked.s
  var r = unpacked.r
  checkValue(s, q)
  checkValue(r, q)
  var montp = BN.mont(p)
  var w = s.invm(q)
  var v = g.toRed(montp)
    .redPow(new BN(hash).mul(w).mod(q))
    .fromRed()
    .mul(y.toRed(montp).redPow(r.mul(w).mod(q)).fromRed())
    .mod(p)
    .mod(q)
  return v.cmp(r) === 0
}

function checkValue (b, q) {
  if (b.cmpn(0) <= 0) throw new Error('invalid sig')
  if (b.cmp(q) >= q) throw new Error('invalid sig')
}

module.exports = verify

}).call(this,require("buffer").Buffer)
},{"./curves.json":162,"bn.js":136,"buffer":168,"elliptic":189,"parse-asn1":309}],166:[function(require,module,exports){
arguments[4][138][0].apply(exports,arguments)
},{"dup":138}],167:[function(require,module,exports){
(function (Buffer){
module.exports = function xor (a, b) {
  var length = Math.min(a.length, b.length)
  var buffer = new Buffer(length)

  for (var i = 0; i < length; ++i) {
    buffer[i] = a[i] ^ b[i]
  }

  return buffer
}

}).call(this,require("buffer").Buffer)
},{"buffer":168}],168:[function(require,module,exports){
(function (Buffer){
/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */
/* eslint-disable no-proto */

'use strict'

var base64 = require('base64-js')
var ieee754 = require('ieee754')
var customInspectSymbol =
  (typeof Symbol === 'function' && typeof Symbol.for === 'function')
    ? Symbol.for('nodejs.util.inspect.custom')
    : null

exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50

var K_MAX_LENGTH = 0x7fffffff
exports.kMaxLength = K_MAX_LENGTH

/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Print warning and recommend using `buffer` v4.x which has an Object
 *               implementation (most compatible, even IE6)
 *
 * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
 * Opera 11.6+, iOS 4.2+.
 *
 * We report that the browser does not support typed arrays if the are not subclassable
 * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
 * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
 * for __proto__ and has a buggy typed array implementation.
 */
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()

if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
    typeof console.error === 'function') {
  console.error(
    'This browser lacks typed array (Uint8Array) support which is required by ' +
    '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
  )
}

function typedArraySupport () {
  // Can typed array instances can be augmented?
  try {
    var arr = new Uint8Array(1)
    var proto = { foo: function () { return 42 } }
    Object.setPrototypeOf(proto, Uint8Array.prototype)
    Object.setPrototypeOf(arr, proto)
    return arr.foo() === 42
  } catch (e) {
    return false
  }
}

Object.defineProperty(Buffer.prototype, 'parent', {
  enumerable: true,
  get: function () {
    if (!Buffer.isBuffer(this)) return undefined
    return this.buffer
  }
})

Object.defineProperty(Buffer.prototype, 'offset', {
  enumerable: true,
  get: function () {
    if (!Buffer.isBuffer(this)) return undefined
    return this.byteOffset
  }
})

function createBuffer (length) {
  if (length > K_MAX_LENGTH) {
    throw new RangeError('The value "' + length + '" is invalid for option "size"')
  }
  // Return an augmented `Uint8Array` instance
  var buf = new Uint8Array(length)
  Object.setPrototypeOf(buf, Buffer.prototype)
  return buf
}

/**
 * The Buffer constructor returns instances of `Uint8Array` that have their
 * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
 * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
 * and the `Uint8Array` methods. Square bracket notation works as expected -- it
 * returns a single octet.
 *
 * The `Uint8Array` prototype remains unmodified.
 */

function Buffer (arg, encodingOrOffset, length) {
  // Common case.
  if (typeof arg === 'number') {
    if (typeof encodingOrOffset === 'string') {
      throw new TypeError(
        'The "string" argument must be of type string. Received type number'
      )
    }
    return allocUnsafe(arg)
  }
  return from(arg, encodingOrOffset, length)
}

// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
if (typeof Symbol !== 'undefined' && Symbol.species != null &&
    Buffer[Symbol.species] === Buffer) {
  Object.defineProperty(Buffer, Symbol.species, {
    value: null,
    configurable: true,
    enumerable: false,
    writable: false
  })
}

Buffer.poolSize = 8192 // not used by this implementation

function from (value, encodingOrOffset, length) {
  if (typeof value === 'string') {
    return fromString(value, encodingOrOffset)
  }

  if (ArrayBuffer.isView(value)) {
    return fromArrayLike(value)
  }

  if (value == null) {
    throw new TypeError(
      'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
      'or Array-like Object. Received type ' + (typeof value)
    )
  }

  if (isInstance(value, ArrayBuffer) ||
      (value && isInstance(value.buffer, ArrayBuffer))) {
    return fromArrayBuffer(value, encodingOrOffset, length)
  }

  if (typeof value === 'number') {
    throw new TypeError(
      'The "value" argument must not be of type number. Received type number'
    )
  }

  var valueOf = value.valueOf && value.valueOf()
  if (valueOf != null && valueOf !== value) {
    return Buffer.from(valueOf, encodingOrOffset, length)
  }

  var b = fromObject(value)
  if (b) return b

  if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&
      typeof value[Symbol.toPrimitive] === 'function') {
    return Buffer.from(
      value[Symbol.toPrimitive]('string'), encodingOrOffset, length
    )
  }

  throw new TypeError(
    'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
    'or Array-like Object. Received type ' + (typeof value)
  )
}

/**
 * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
 * if value is a number.
 * Buffer.from(str[, encoding])
 * Buffer.from(array)
 * Buffer.from(buffer)
 * Buffer.from(arrayBuffer[, byteOffset[, length]])
 **/
Buffer.from = function (value, encodingOrOffset, length) {
  return from(value, encodingOrOffset, length)
}

// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
// https://github.com/feross/buffer/pull/148
Object.setPrototypeOf(Buffer.prototype, Uint8Array.prototype)
Object.setPrototypeOf(Buffer, Uint8Array)

function assertSize (size) {
  if (typeof size !== 'number') {
    throw new TypeError('"size" argument must be of type number')
  } else if (size < 0) {
    throw new RangeError('The value "' + size + '" is invalid for option "size"')
  }
}

function alloc (size, fill, encoding) {
  assertSize(size)
  if (size <= 0) {
    return createBuffer(size)
  }
  if (fill !== undefined) {
    // Only pay attention to encoding if it's a string. This
    // prevents accidentally sending in a number that would
    // be interpretted as a start offset.
    return typeof encoding === 'string'
      ? createBuffer(size).fill(fill, encoding)
      : createBuffer(size).fill(fill)
  }
  return createBuffer(size)
}

/**
 * Creates a new filled Buffer instance.
 * alloc(size[, fill[, encoding]])
 **/
Buffer.alloc = function (size, fill, encoding) {
  return alloc(size, fill, encoding)
}

function allocUnsafe (size) {
  assertSize(size)
  return createBuffer(size < 0 ? 0 : checked(size) | 0)
}

/**
 * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
 * */
Buffer.allocUnsafe = function (size) {
  return allocUnsafe(size)
}
/**
 * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
 */
Buffer.allocUnsafeSlow = function (size) {
  return allocUnsafe(size)
}

function fromString (string, encoding) {
  if (typeof encoding !== 'string' || encoding === '') {
    encoding = 'utf8'
  }

  if (!Buffer.isEncoding(encoding)) {
    throw new TypeError('Unknown encoding: ' + encoding)
  }

  var length = byteLength(string, encoding) | 0
  var buf = createBuffer(length)

  var actual = buf.write(string, encoding)

  if (actual !== length) {
    // Writing a hex string, for example, that contains invalid characters will
    // cause everything after the first invalid character to be ignored. (e.g.
    // 'abxxcd' will be treated as 'ab')
    buf = buf.slice(0, actual)
  }

  return buf
}

function fromArrayLike (array) {
  var length = array.length < 0 ? 0 : checked(array.length) | 0
  var buf = createBuffer(length)
  for (var i = 0; i < length; i += 1) {
    buf[i] = array[i] & 255
  }
  return buf
}

function fromArrayBuffer (array, byteOffset, length) {
  if (byteOffset < 0 || array.byteLength < byteOffset) {
    throw new RangeError('"offset" is outside of buffer bounds')
  }

  if (array.byteLength < byteOffset + (length || 0)) {
    throw new RangeError('"length" is outside of buffer bounds')
  }

  var buf
  if (byteOffset === undefined && length === undefined) {
    buf = new Uint8Array(array)
  } else if (length === undefined) {
    buf = new Uint8Array(array, byteOffset)
  } else {
    buf = new Uint8Array(array, byteOffset, length)
  }

  // Return an augmented `Uint8Array` instance
  Object.setPrototypeOf(buf, Buffer.prototype)

  return buf
}

function fromObject (obj) {
  if (Buffer.isBuffer(obj)) {
    var len = checked(obj.length) | 0
    var buf = createBuffer(len)

    if (buf.length === 0) {
      return buf
    }

    obj.copy(buf, 0, 0, len)
    return buf
  }

  if (obj.length !== undefined) {
    if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
      return createBuffer(0)
    }
    return fromArrayLike(obj)
  }

  if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
    return fromArrayLike(obj.data)
  }
}

function checked (length) {
  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when
  // length is NaN (which is otherwise coerced to zero.)
  if (length >= K_MAX_LENGTH) {
    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
                         'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
  }
  return length | 0
}

function SlowBuffer (length) {
  if (+length != length) { // eslint-disable-line eqeqeq
    length = 0
  }
  return Buffer.alloc(+length)
}

Buffer.isBuffer = function isBuffer (b) {
  return b != null && b._isBuffer === true &&
    b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false
}

Buffer.compare = function compare (a, b) {
  if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)
  if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
    throw new TypeError(
      'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array'
    )
  }

  if (a === b) return 0

  var x = a.length
  var y = b.length

  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
    if (a[i] !== b[i]) {
      x = a[i]
      y = b[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

Buffer.isEncoding = function isEncoding (encoding) {
  switch (String(encoding).toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'latin1':
    case 'binary':
    case 'base64':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      return true
    default:
      return false
  }
}

Buffer.concat = function concat (list, length) {
  if (!Array.isArray(list)) {
    throw new TypeError('"list" argument must be an Array of Buffers')
  }

  if (list.length === 0) {
    return Buffer.alloc(0)
  }

  var i
  if (length === undefined) {
    length = 0
    for (i = 0; i < list.length; ++i) {
      length += list[i].length
    }
  }

  var buffer = Buffer.allocUnsafe(length)
  var pos = 0
  for (i = 0; i < list.length; ++i) {
    var buf = list[i]
    if (isInstance(buf, Uint8Array)) {
      buf = Buffer.from(buf)
    }
    if (!Buffer.isBuffer(buf)) {
      throw new TypeError('"list" argument must be an Array of Buffers')
    }
    buf.copy(buffer, pos)
    pos += buf.length
  }
  return buffer
}

function byteLength (string, encoding) {
  if (Buffer.isBuffer(string)) {
    return string.length
  }
  if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
    return string.byteLength
  }
  if (typeof string !== 'string') {
    throw new TypeError(
      'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
      'Received type ' + typeof string
    )
  }

  var len = string.length
  var mustMatch = (arguments.length > 2 && arguments[2] === true)
  if (!mustMatch && len === 0) return 0

  // Use a for loop to avoid recursion
  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'ascii':
      case 'latin1':
      case 'binary':
        return len
      case 'utf8':
      case 'utf-8':
        return utf8ToBytes(string).length
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return len * 2
      case 'hex':
        return len >>> 1
      case 'base64':
        return base64ToBytes(string).length
      default:
        if (loweredCase) {
          return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8
        }
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}
Buffer.byteLength = byteLength

function slowToString (encoding, start, end) {
  var loweredCase = false

  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
  // property of a typed array.

  // This behaves neither like String nor Uint8Array in that we set start/end
  // to their upper/lower bounds if the value passed is out of range.
  // undefined is handled specially as per ECMA-262 6th Edition,
  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
  if (start === undefined || start < 0) {
    start = 0
  }
  // Return early if start > this.length. Done here to prevent potential uint32
  // coercion fail below.
  if (start > this.length) {
    return ''
  }

  if (end === undefined || end > this.length) {
    end = this.length
  }

  if (end <= 0) {
    return ''
  }

  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
  end >>>= 0
  start >>>= 0

  if (end <= start) {
    return ''
  }

  if (!encoding) encoding = 'utf8'

  while (true) {
    switch (encoding) {
      case 'hex':
        return hexSlice(this, start, end)

      case 'utf8':
      case 'utf-8':
        return utf8Slice(this, start, end)

      case 'ascii':
        return asciiSlice(this, start, end)

      case 'latin1':
      case 'binary':
        return latin1Slice(this, start, end)

      case 'base64':
        return base64Slice(this, start, end)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return utf16leSlice(this, start, end)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = (encoding + '').toLowerCase()
        loweredCase = true
    }
  }
}

// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
// reliably in a browserify context because there could be multiple different
// copies of the 'buffer' package in use. This method works even for Buffer
// instances that were created from another copy of the `buffer` package.
// See: https://github.com/feross/buffer/issues/154
Buffer.prototype._isBuffer = true

function swap (b, n, m) {
  var i = b[n]
  b[n] = b[m]
  b[m] = i
}

Buffer.prototype.swap16 = function swap16 () {
  var len = this.length
  if (len % 2 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 16-bits')
  }
  for (var i = 0; i < len; i += 2) {
    swap(this, i, i + 1)
  }
  return this
}

Buffer.prototype.swap32 = function swap32 () {
  var len = this.length
  if (len % 4 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 32-bits')
  }
  for (var i = 0; i < len; i += 4) {
    swap(this, i, i + 3)
    swap(this, i + 1, i + 2)
  }
  return this
}

Buffer.prototype.swap64 = function swap64 () {
  var len = this.length
  if (len % 8 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 64-bits')
  }
  for (var i = 0; i < len; i += 8) {
    swap(this, i, i + 7)
    swap(this, i + 1, i + 6)
    swap(this, i + 2, i + 5)
    swap(this, i + 3, i + 4)
  }
  return this
}

Buffer.prototype.toString = function toString () {
  var length = this.length
  if (length === 0) return ''
  if (arguments.length === 0) return utf8Slice(this, 0, length)
  return slowToString.apply(this, arguments)
}

Buffer.prototype.toLocaleString = Buffer.prototype.toString

Buffer.prototype.equals = function equals (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  if (this === b) return true
  return Buffer.compare(this, b) === 0
}

Buffer.prototype.inspect = function inspect () {
  var str = ''
  var max = exports.INSPECT_MAX_BYTES
  str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()
  if (this.length > max) str += ' ... '
  return '<Buffer ' + str + '>'
}
if (customInspectSymbol) {
  Buffer.prototype[customInspectSymbol] = Buffer.prototype.inspect
}

Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
  if (isInstance(target, Uint8Array)) {
    target = Buffer.from(target, target.offset, target.byteLength)
  }
  if (!Buffer.isBuffer(target)) {
    throw new TypeError(
      'The "target" argument must be one of type Buffer or Uint8Array. ' +
      'Received type ' + (typeof target)
    )
  }

  if (start === undefined) {
    start = 0
  }
  if (end === undefined) {
    end = target ? target.length : 0
  }
  if (thisStart === undefined) {
    thisStart = 0
  }
  if (thisEnd === undefined) {
    thisEnd = this.length
  }

  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
    throw new RangeError('out of range index')
  }

  if (thisStart >= thisEnd && start >= end) {
    return 0
  }
  if (thisStart >= thisEnd) {
    return -1
  }
  if (start >= end) {
    return 1
  }

  start >>>= 0
  end >>>= 0
  thisStart >>>= 0
  thisEnd >>>= 0

  if (this === target) return 0

  var x = thisEnd - thisStart
  var y = end - start
  var len = Math.min(x, y)

  var thisCopy = this.slice(thisStart, thisEnd)
  var targetCopy = target.slice(start, end)

  for (var i = 0; i < len; ++i) {
    if (thisCopy[i] !== targetCopy[i]) {
      x = thisCopy[i]
      y = targetCopy[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
  // Empty buffer means no match
  if (buffer.length === 0) return -1

  // Normalize byteOffset
  if (typeof byteOffset === 'string') {
    encoding = byteOffset
    byteOffset = 0
  } else if (byteOffset > 0x7fffffff) {
    byteOffset = 0x7fffffff
  } else if (byteOffset < -0x80000000) {
    byteOffset = -0x80000000
  }
  byteOffset = +byteOffset // Coerce to Number.
  if (numberIsNaN(byteOffset)) {
    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
    byteOffset = dir ? 0 : (buffer.length - 1)
  }

  // Normalize byteOffset: negative offsets start from the end of the buffer
  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
  if (byteOffset >= buffer.length) {
    if (dir) return -1
    else byteOffset = buffer.length - 1
  } else if (byteOffset < 0) {
    if (dir) byteOffset = 0
    else return -1
  }

  // Normalize val
  if (typeof val === 'string') {
    val = Buffer.from(val, encoding)
  }

  // Finally, search either indexOf (if dir is true) or lastIndexOf
  if (Buffer.isBuffer(val)) {
    // Special case: looking for empty string/buffer always fails
    if (val.length === 0) {
      return -1
    }
    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
  } else if (typeof val === 'number') {
    val = val & 0xFF // Search for a byte value [0-255]
    if (typeof Uint8Array.prototype.indexOf === 'function') {
      if (dir) {
        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
      } else {
        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
      }
    }
    return arrayIndexOf(buffer, [val], byteOffset, encoding, dir)
  }

  throw new TypeError('val must be string, number or Buffer')
}

function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
  var indexSize = 1
  var arrLength = arr.length
  var valLength = val.length

  if (encoding !== undefined) {
    encoding = String(encoding).toLowerCase()
    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
        encoding === 'utf16le' || encoding === 'utf-16le') {
      if (arr.length < 2 || val.length < 2) {
        return -1
      }
      indexSize = 2
      arrLength /= 2
      valLength /= 2
      byteOffset /= 2
    }
  }

  function read (buf, i) {
    if (indexSize === 1) {
      return buf[i]
    } else {
      return buf.readUInt16BE(i * indexSize)
    }
  }

  var i
  if (dir) {
    var foundIndex = -1
    for (i = byteOffset; i < arrLength; i++) {
      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
        if (foundIndex === -1) foundIndex = i
        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
      } else {
        if (foundIndex !== -1) i -= i - foundIndex
        foundIndex = -1
      }
    }
  } else {
    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
    for (i = byteOffset; i >= 0; i--) {
      var found = true
      for (var j = 0; j < valLength; j++) {
        if (read(arr, i + j) !== read(val, j)) {
          found = false
          break
        }
      }
      if (found) return i
    }
  }

  return -1
}

Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
  return this.indexOf(val, byteOffset, encoding) !== -1
}

Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
}

Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
}

function hexWrite (buf, string, offset, length) {
  offset = Number(offset) || 0
  var remaining = buf.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }

  var strLen = string.length

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; ++i) {
    var parsed = parseInt(string.substr(i * 2, 2), 16)
    if (numberIsNaN(parsed)) return i
    buf[offset + i] = parsed
  }
  return i
}

function utf8Write (buf, string, offset, length) {
  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}

function asciiWrite (buf, string, offset, length) {
  return blitBuffer(asciiToBytes(string), buf, offset, length)
}

function latin1Write (buf, string, offset, length) {
  return asciiWrite(buf, string, offset, length)
}

function base64Write (buf, string, offset, length) {
  return blitBuffer(base64ToBytes(string), buf, offset, length)
}

function ucs2Write (buf, string, offset, length) {
  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}

Buffer.prototype.write = function write (string, offset, length, encoding) {
  // Buffer#write(string)
  if (offset === undefined) {
    encoding = 'utf8'
    length = this.length
    offset = 0
  // Buffer#write(string, encoding)
  } else if (length === undefined && typeof offset === 'string') {
    encoding = offset
    length = this.length
    offset = 0
  // Buffer#write(string, offset[, length][, encoding])
  } else if (isFinite(offset)) {
    offset = offset >>> 0
    if (isFinite(length)) {
      length = length >>> 0
      if (encoding === undefined) encoding = 'utf8'
    } else {
      encoding = length
      length = undefined
    }
  } else {
    throw new Error(
      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
    )
  }

  var remaining = this.length - offset
  if (length === undefined || length > remaining) length = remaining

  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
    throw new RangeError('Attempt to write outside buffer bounds')
  }

  if (!encoding) encoding = 'utf8'

  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'hex':
        return hexWrite(this, string, offset, length)

      case 'utf8':
      case 'utf-8':
        return utf8Write(this, string, offset, length)

      case 'ascii':
        return asciiWrite(this, string, offset, length)

      case 'latin1':
      case 'binary':
        return latin1Write(this, string, offset, length)

      case 'base64':
        // Warning: maxLength not taken into account in base64Write
        return base64Write(this, string, offset, length)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return ucs2Write(this, string, offset, length)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}

Buffer.prototype.toJSON = function toJSON () {
  return {
    type: 'Buffer',
    data: Array.prototype.slice.call(this._arr || this, 0)
  }
}

function base64Slice (buf, start, end) {
  if (start === 0 && end === buf.length) {
    return base64.fromByteArray(buf)
  } else {
    return base64.fromByteArray(buf.slice(start, end))
  }
}

function utf8Slice (buf, start, end) {
  end = Math.min(buf.length, end)
  var res = []

  var i = start
  while (i < end) {
    var firstByte = buf[i]
    var codePoint = null
    var bytesPerSequence = (firstByte > 0xEF) ? 4
      : (firstByte > 0xDF) ? 3
        : (firstByte > 0xBF) ? 2
          : 1

    if (i + bytesPerSequence <= end) {
      var secondByte, thirdByte, fourthByte, tempCodePoint

      switch (bytesPerSequence) {
        case 1:
          if (firstByte < 0x80) {
            codePoint = firstByte
          }
          break
        case 2:
          secondByte = buf[i + 1]
          if ((secondByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
            if (tempCodePoint > 0x7F) {
              codePoint = tempCodePoint
            }
          }
          break
        case 3:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
              codePoint = tempCodePoint
            }
          }
          break
        case 4:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          fourthByte = buf[i + 3]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
              codePoint = tempCodePoint
            }
          }
      }
    }

    if (codePoint === null) {
      // we did not generate a valid codePoint so insert a
      // replacement char (U+FFFD) and advance only 1 byte
      codePoint = 0xFFFD
      bytesPerSequence = 1
    } else if (codePoint > 0xFFFF) {
      // encode to utf16 (surrogate pair dance)
      codePoint -= 0x10000
      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
      codePoint = 0xDC00 | codePoint & 0x3FF
    }

    res.push(codePoint)
    i += bytesPerSequence
  }

  return decodeCodePointsArray(res)
}

// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000

function decodeCodePointsArray (codePoints) {
  var len = codePoints.length
  if (len <= MAX_ARGUMENTS_LENGTH) {
    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
  }

  // Decode in chunks to avoid "call stack size exceeded".
  var res = ''
  var i = 0
  while (i < len) {
    res += String.fromCharCode.apply(
      String,
      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
    )
  }
  return res
}

function asciiSlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i] & 0x7F)
  }
  return ret
}

function latin1Slice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i])
  }
  return ret
}

function hexSlice (buf, start, end) {
  var len = buf.length

  if (!start || start < 0) start = 0
  if (!end || end < 0 || end > len) end = len

  var out = ''
  for (var i = start; i < end; ++i) {
    out += hexSliceLookupTable[buf[i]]
  }
  return out
}

function utf16leSlice (buf, start, end) {
  var bytes = buf.slice(start, end)
  var res = ''
  for (var i = 0; i < bytes.length; i += 2) {
    res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
  }
  return res
}

Buffer.prototype.slice = function slice (start, end) {
  var len = this.length
  start = ~~start
  end = end === undefined ? len : ~~end

  if (start < 0) {
    start += len
    if (start < 0) start = 0
  } else if (start > len) {
    start = len
  }

  if (end < 0) {
    end += len
    if (end < 0) end = 0
  } else if (end > len) {
    end = len
  }

  if (end < start) end = start

  var newBuf = this.subarray(start, end)
  // Return an augmented `Uint8Array` instance
  Object.setPrototypeOf(newBuf, Buffer.prototype)

  return newBuf
}

/*
 * Need to make sure that buffer isn't trying to write out of bounds.
 */
function checkOffset (offset, ext, length) {
  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}

Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }

  return val
}

Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    checkOffset(offset, byteLength, this.length)
  }

  var val = this[offset + --byteLength]
  var mul = 1
  while (byteLength > 0 && (mul *= 0x100)) {
    val += this[offset + --byteLength] * mul
  }

  return val
}

Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 1, this.length)
  return this[offset]
}

Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  return this[offset] | (this[offset + 1] << 8)
}

Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  return (this[offset] << 8) | this[offset + 1]
}

Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return ((this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16)) +
      (this[offset + 3] * 0x1000000)
}

Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] * 0x1000000) +
    ((this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    this[offset + 3])
}

Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var i = byteLength
  var mul = 1
  var val = this[offset + --i]
  while (i > 0 && (mul *= 0x100)) {
    val += this[offset + --i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 1, this.length)
  if (!(this[offset] & 0x80)) return (this[offset])
  return ((0xff - this[offset] + 1) * -1)
}

Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset] | (this[offset + 1] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset + 1] | (this[offset] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset]) |
    (this[offset + 1] << 8) |
    (this[offset + 2] << 16) |
    (this[offset + 3] << 24)
}

Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] << 24) |
    (this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    (this[offset + 3])
}

Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
}

Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, false, 23, 4)
}

Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, true, 52, 8)
}

Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, false, 52, 8)
}

function checkInt (buf, value, offset, ext, max, min) {
  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
}

Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var mul = 1
  var i = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var i = byteLength - 1
  var mul = 1
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  return offset + 2
}

Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  this[offset] = (value >>> 8)
  this[offset + 1] = (value & 0xff)
  return offset + 2
}

Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  this[offset + 3] = (value >>> 24)
  this[offset + 2] = (value >>> 16)
  this[offset + 1] = (value >>> 8)
  this[offset] = (value & 0xff)
  return offset + 4
}

Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  this[offset] = (value >>> 24)
  this[offset + 1] = (value >>> 16)
  this[offset + 2] = (value >>> 8)
  this[offset + 3] = (value & 0xff)
  return offset + 4
}

Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    var limit = Math.pow(2, (8 * byteLength) - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = 0
  var mul = 1
  var sub = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    var limit = Math.pow(2, (8 * byteLength) - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = byteLength - 1
  var mul = 1
  var sub = 0
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
  if (value < 0) value = 0xff + value + 1
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  return offset + 2
}

Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  this[offset] = (value >>> 8)
  this[offset + 1] = (value & 0xff)
  return offset + 2
}

Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  this[offset + 2] = (value >>> 16)
  this[offset + 3] = (value >>> 24)
  return offset + 4
}

Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (value < 0) value = 0xffffffff + value + 1
  this[offset] = (value >>> 24)
  this[offset + 1] = (value >>> 16)
  this[offset + 2] = (value >>> 8)
  this[offset + 3] = (value & 0xff)
  return offset + 4
}

function checkIEEE754 (buf, value, offset, ext, max, min) {
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
  if (offset < 0) throw new RangeError('Index out of range')
}

function writeFloat (buf, value, offset, littleEndian, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
  }
  ieee754.write(buf, value, offset, littleEndian, 23, 4)
  return offset + 4
}

Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
  return writeFloat(this, value, offset, true, noAssert)
}

Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
  return writeFloat(this, value, offset, false, noAssert)
}

function writeDouble (buf, value, offset, littleEndian, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
  }
  ieee754.write(buf, value, offset, littleEndian, 52, 8)
  return offset + 8
}

Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
  return writeDouble(this, value, offset, true, noAssert)
}

Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
  return writeDouble(this, value, offset, false, noAssert)
}

// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
  if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')
  if (!start) start = 0
  if (!end && end !== 0) end = this.length
  if (targetStart >= target.length) targetStart = target.length
  if (!targetStart) targetStart = 0
  if (end > 0 && end < start) end = start

  // Copy 0 bytes; we're done
  if (end === start) return 0
  if (target.length === 0 || this.length === 0) return 0

  // Fatal error conditions
  if (targetStart < 0) {
    throw new RangeError('targetStart out of bounds')
  }
  if (start < 0 || start >= this.length) throw new RangeError('Index out of range')
  if (end < 0) throw new RangeError('sourceEnd out of bounds')

  // Are we oob?
  if (end > this.length) end = this.length
  if (target.length - targetStart < end - start) {
    end = target.length - targetStart + start
  }

  var len = end - start

  if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
    // Use built-in when available, missing from IE11
    this.copyWithin(targetStart, start, end)
  } else if (this === target && start < targetStart && targetStart < end) {
    // descending copy from end
    for (var i = len - 1; i >= 0; --i) {
      target[i + targetStart] = this[i + start]
    }
  } else {
    Uint8Array.prototype.set.call(
      target,
      this.subarray(start, end),
      targetStart
    )
  }

  return len
}

// Usage:
//    buffer.fill(number[, offset[, end]])
//    buffer.fill(buffer[, offset[, end]])
//    buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill (val, start, end, encoding) {
  // Handle string cases:
  if (typeof val === 'string') {
    if (typeof start === 'string') {
      encoding = start
      start = 0
      end = this.length
    } else if (typeof end === 'string') {
      encoding = end
      end = this.length
    }
    if (encoding !== undefined && typeof encoding !== 'string') {
      throw new TypeError('encoding must be a string')
    }
    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
      throw new TypeError('Unknown encoding: ' + encoding)
    }
    if (val.length === 1) {
      var code = val.charCodeAt(0)
      if ((encoding === 'utf8' && code < 128) ||
          encoding === 'latin1') {
        // Fast path: If `val` fits into a single byte, use that numeric value.
        val = code
      }
    }
  } else if (typeof val === 'number') {
    val = val & 255
  } else if (typeof val === 'boolean') {
    val = Number(val)
  }

  // Invalid ranges are not set to a default, so can range check early.
  if (start < 0 || this.length < start || this.length < end) {
    throw new RangeError('Out of range index')
  }

  if (end <= start) {
    return this
  }

  start = start >>> 0
  end = end === undefined ? this.length : end >>> 0

  if (!val) val = 0

  var i
  if (typeof val === 'number') {
    for (i = start; i < end; ++i) {
      this[i] = val
    }
  } else {
    var bytes = Buffer.isBuffer(val)
      ? val
      : Buffer.from(val, encoding)
    var len = bytes.length
    if (len === 0) {
      throw new TypeError('The value "' + val +
        '" is invalid for argument "value"')
    }
    for (i = 0; i < end - start; ++i) {
      this[i + start] = bytes[i % len]
    }
  }

  return this
}

// HELPER FUNCTIONS
// ================

var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g

function base64clean (str) {
  // Node takes equal signs as end of the Base64 encoding
  str = str.split('=')[0]
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = str.trim().replace(INVALID_BASE64_RE, '')
  // Node converts strings with length < 2 to ''
  if (str.length < 2) return ''
  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
  while (str.length % 4 !== 0) {
    str = str + '='
  }
  return str
}

function utf8ToBytes (string, units) {
  units = units || Infinity
  var codePoint
  var length = string.length
  var leadSurrogate = null
  var bytes = []

  for (var i = 0; i < length; ++i) {
    codePoint = string.charCodeAt(i)

    // is surrogate component
    if (codePoint > 0xD7FF && codePoint < 0xE000) {
      // last char was a lead
      if (!leadSurrogate) {
        // no lead yet
        if (codePoint > 0xDBFF) {
          // unexpected trail
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        } else if (i + 1 === length) {
          // unpaired lead
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        }

        // valid lead
        leadSurrogate = codePoint

        continue
      }

      // 2 leads in a row
      if (codePoint < 0xDC00) {
        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
        leadSurrogate = codePoint
        continue
      }

      // valid surrogate pair
      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
    } else if (leadSurrogate) {
      // valid bmp char, but last char was a lead
      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
    }

    leadSurrogate = null

    // encode utf8
    if (codePoint < 0x80) {
      if ((units -= 1) < 0) break
      bytes.push(codePoint)
    } else if (codePoint < 0x800) {
      if ((units -= 2) < 0) break
      bytes.push(
        codePoint >> 0x6 | 0xC0,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x10000) {
      if ((units -= 3) < 0) break
      bytes.push(
        codePoint >> 0xC | 0xE0,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x110000) {
      if ((units -= 4) < 0) break
      bytes.push(
        codePoint >> 0x12 | 0xF0,
        codePoint >> 0xC & 0x3F | 0x80,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else {
      throw new Error('Invalid code point')
    }
  }

  return bytes
}

function asciiToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    // Node's code seems to be doing this and not & 0x7F..
    byteArray.push(str.charCodeAt(i) & 0xFF)
  }
  return byteArray
}

function utf16leToBytes (str, units) {
  var c, hi, lo
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    if ((units -= 2) < 0) break

    c = str.charCodeAt(i)
    hi = c >> 8
    lo = c % 256
    byteArray.push(lo)
    byteArray.push(hi)
  }

  return byteArray
}

function base64ToBytes (str) {
  return base64.toByteArray(base64clean(str))
}

function blitBuffer (src, dst, offset, length) {
  for (var i = 0; i < length; ++i) {
    if ((i + offset >= dst.length) || (i >= src.length)) break
    dst[i + offset] = src[i]
  }
  return i
}

// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
// the `instanceof` check but they should be treated as of that type.
// See: https://github.com/feross/buffer/issues/166
function isInstance (obj, type) {
  return obj instanceof type ||
    (obj != null && obj.constructor != null && obj.constructor.name != null &&
      obj.constructor.name === type.name)
}
function numberIsNaN (obj) {
  // For IE11 support
  return obj !== obj // eslint-disable-line no-self-compare
}

// Create lookup table for `toString('hex')`
// See: https://github.com/feross/buffer/issues/219
var hexSliceLookupTable = (function () {
  var alphabet = '0123456789abcdef'
  var table = new Array(256)
  for (var i = 0; i < 16; ++i) {
    var i16 = i * 16
    for (var j = 0; j < 16; ++j) {
      table[i16 + j] = alphabet[i] + alphabet[j]
    }
  }
  return table
})()

}).call(this,require("buffer").Buffer)
},{"base64-js":135,"buffer":168,"ieee754":243}],169:[function(require,module,exports){
var Buffer = require('safe-buffer').Buffer
var Transform = require('stream').Transform
var StringDecoder = require('string_decoder').StringDecoder
var inherits = require('inherits')

function CipherBase (hashMode) {
  Transform.call(this)
  this.hashMode = typeof hashMode === 'string'
  if (this.hashMode) {
    this[hashMode] = this._finalOrDigest
  } else {
    this.final = this._finalOrDigest
  }
  if (this._final) {
    this.__final = this._final
    this._final = null
  }
  this._decoder = null
  this._encoding = null
}
inherits(CipherBase, Transform)

CipherBase.prototype.update = function (data, inputEnc, outputEnc) {
  if (typeof data === 'string') {
    data = Buffer.from(data, inputEnc)
  }

  var outData = this._update(data)
  if (this.hashMode) return this

  if (outputEnc) {
    outData = this._toString(outData, outputEnc)
  }

  return outData
}

CipherBase.prototype.setAutoPadding = function () {}
CipherBase.prototype.getAuthTag = function () {
  throw new Error('trying to get auth tag in unsupported state')
}

CipherBase.prototype.setAuthTag = function () {
  throw new Error('trying to set auth tag in unsupported state')
}

CipherBase.prototype.setAAD = function () {
  throw new Error('trying to set aad in unsupported state')
}

CipherBase.prototype._transform = function (data, _, next) {
  var err
  try {
    if (this.hashMode) {
      this._update(data)
    } else {
      this.push(this._update(data))
    }
  } catch (e) {
    err = e
  } finally {
    next(err)
  }
}
CipherBase.prototype._flush = function (done) {
  var err
  try {
    this.push(this.__final())
  } catch (e) {
    err = e
  }

  done(err)
}
CipherBase.prototype._finalOrDigest = function (outputEnc) {
  var outData = this.__final() || Buffer.alloc(0)
  if (outputEnc) {
    outData = this._toString(outData, outputEnc, true)
  }
  return outData
}

CipherBase.prototype._toString = function (value, enc, fin) {
  if (!this._decoder) {
    this._decoder = new StringDecoder(enc)
    this._encoding = enc
  }

  if (this._encoding !== enc) throw new Error('can\'t switch encodings')

  var out = this._decoder.write(value)
  if (fin) {
    out += this._decoder.end()
  }

  return out
}

module.exports = CipherBase

},{"inherits":245,"safe-buffer":326,"stream":337,"string_decoder":351}],170:[function(require,module,exports){
(function (Buffer){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.

function isArray(arg) {
  if (Array.isArray) {
    return Array.isArray(arg);
  }
  return objectToString(arg) === '[object Array]';
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = Buffer.isBuffer;

function objectToString(o) {
  return Object.prototype.toString.call(o);
}

}).call(this,{"isBuffer":require("../../is-buffer/index.js")})
},{"../../is-buffer/index.js":246}],171:[function(require,module,exports){
(function (Buffer){
var elliptic = require('elliptic')
var BN = require('bn.js')

module.exports = function createECDH (curve) {
  return new ECDH(curve)
}

var aliases = {
  secp256k1: {
    name: 'secp256k1',
    byteLength: 32
  },
  secp224r1: {
    name: 'p224',
    byteLength: 28
  },
  prime256v1: {
    name: 'p256',
    byteLength: 32
  },
  prime192v1: {
    name: 'p192',
    byteLength: 24
  },
  ed25519: {
    name: 'ed25519',
    byteLength: 32
  },
  secp384r1: {
    name: 'p384',
    byteLength: 48
  },
  secp521r1: {
    name: 'p521',
    byteLength: 66
  }
}

aliases.p224 = aliases.secp224r1
aliases.p256 = aliases.secp256r1 = aliases.prime256v1
aliases.p192 = aliases.secp192r1 = aliases.prime192v1
aliases.p384 = aliases.secp384r1
aliases.p521 = aliases.secp521r1

function ECDH (curve) {
  this.curveType = aliases[curve]
  if (!this.curveType) {
    this.curveType = {
      name: curve
    }
  }
  this.curve = new elliptic.ec(this.curveType.name) // eslint-disable-line new-cap
  this.keys = void 0
}

ECDH.prototype.generateKeys = function (enc, format) {
  this.keys = this.curve.genKeyPair()
  return this.getPublicKey(enc, format)
}

ECDH.prototype.computeSecret = function (other, inenc, enc) {
  inenc = inenc || 'utf8'
  if (!Buffer.isBuffer(other)) {
    other = new Buffer(other, inenc)
  }
  var otherPub = this.curve.keyFromPublic(other).getPublic()
  var out = otherPub.mul(this.keys.getPrivate()).getX()
  return formatReturnValue(out, enc, this.curveType.byteLength)
}

ECDH.prototype.getPublicKey = function (enc, format) {
  var key = this.keys.getPublic(format === 'compressed', true)
  if (format === 'hybrid') {
    if (key[key.length - 1] % 2) {
      key[0] = 7
    } else {
      key[0] = 6
    }
  }
  return formatReturnValue(key, enc)
}

ECDH.prototype.getPrivateKey = function (enc) {
  return formatReturnValue(this.keys.getPrivate(), enc)
}

ECDH.prototype.setPublicKey = function (pub, enc) {
  enc = enc || 'utf8'
  if (!Buffer.isBuffer(pub)) {
    pub = new Buffer(pub, enc)
  }
  this.keys._importPublic(pub)
  return this
}

ECDH.prototype.setPrivateKey = function (priv, enc) {
  enc = enc || 'utf8'
  if (!Buffer.isBuffer(priv)) {
    priv = new Buffer(priv, enc)
  }

  var _priv = new BN(priv)
  _priv = _priv.toString(16)
  this.keys = this.curve.genKeyPair()
  this.keys._importPrivate(_priv)
  return this
}

function formatReturnValue (bn, enc, len) {
  if (!Array.isArray(bn)) {
    bn = bn.toArray()
  }
  var buf = new Buffer(bn)
  if (len && buf.length < len) {
    var zeros = new Buffer(len - buf.length)
    zeros.fill(0)
    buf = Buffer.concat([zeros, buf])
  }
  if (!enc) {
    return buf
  } else {
    return buf.toString(enc)
  }
}

}).call(this,require("buffer").Buffer)
},{"bn.js":136,"buffer":168,"elliptic":189}],172:[function(require,module,exports){
'use strict'
var inherits = require('inherits')
var MD5 = require('md5.js')
var RIPEMD160 = require('ripemd160')
var sha = require('sha.js')
var Base = require('cipher-base')

function Hash (hash) {
  Base.call(this, 'digest')

  this._hash = hash
}

inherits(Hash, Base)

Hash.prototype._update = function (data) {
  this._hash.update(data)
}

Hash.prototype._final = function () {
  return this._hash.digest()
}

module.exports = function createHash (alg) {
  alg = alg.toLowerCase()
  if (alg === 'md5') return new MD5()
  if (alg === 'rmd160' || alg === 'ripemd160') return new RIPEMD160()

  return new Hash(sha(alg))
}

},{"cipher-base":169,"inherits":245,"md5.js":285,"ripemd160":325,"sha.js":330}],173:[function(require,module,exports){
var MD5 = require('md5.js')

module.exports = function (buffer) {
  return new MD5().update(buffer).digest()
}

},{"md5.js":285}],174:[function(require,module,exports){
'use strict'
var inherits = require('inherits')
var Legacy = require('./legacy')
var Base = require('cipher-base')
var Buffer = require('safe-buffer').Buffer
var md5 = require('create-hash/md5')
var RIPEMD160 = require('ripemd160')

var sha = require('sha.js')

var ZEROS = Buffer.alloc(128)

function Hmac (alg, key) {
  Base.call(this, 'digest')
  if (typeof key === 'string') {
    key = Buffer.from(key)
  }

  var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64

  this._alg = alg
  this._key = key
  if (key.length > blocksize) {
    var hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
    key = hash.update(key).digest()
  } else if (key.length < blocksize) {
    key = Buffer.concat([key, ZEROS], blocksize)
  }

  var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
  var opad = this._opad = Buffer.allocUnsafe(blocksize)

  for (var i = 0; i < blocksize; i++) {
    ipad[i] = key[i] ^ 0x36
    opad[i] = key[i] ^ 0x5C
  }
  this._hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
  this._hash.update(ipad)
}

inherits(Hmac, Base)

Hmac.prototype._update = function (data) {
  this._hash.update(data)
}

Hmac.prototype._final = function () {
  var h = this._hash.digest()
  var hash = this._alg === 'rmd160' ? new RIPEMD160() : sha(this._alg)
  return hash.update(this._opad).update(h).digest()
}

module.exports = function createHmac (alg, key) {
  alg = alg.toLowerCase()
  if (alg === 'rmd160' || alg === 'ripemd160') {
    return new Hmac('rmd160', key)
  }
  if (alg === 'md5') {
    return new Legacy(md5, key)
  }
  return new Hmac(alg, key)
}

},{"./legacy":175,"cipher-base":169,"create-hash/md5":173,"inherits":245,"ripemd160":325,"safe-buffer":326,"sha.js":330}],175:[function(require,module,exports){
'use strict'
var inherits = require('inherits')
var Buffer = require('safe-buffer').Buffer

var Base = require('cipher-base')

var ZEROS = Buffer.alloc(128)
var blocksize = 64

function Hmac (alg, key) {
  Base.call(this, 'digest')
  if (typeof key === 'string') {
    key = Buffer.from(key)
  }

  this._alg = alg
  this._key = key

  if (key.length > blocksize) {
    key = alg(key)
  } else if (key.length < blocksize) {
    key = Buffer.concat([key, ZEROS], blocksize)
  }

  var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
  var opad = this._opad = Buffer.allocUnsafe(blocksize)

  for (var i = 0; i < blocksize; i++) {
    ipad[i] = key[i] ^ 0x36
    opad[i] = key[i] ^ 0x5C
  }

  this._hash = [ipad]
}

inherits(Hmac, Base)

Hmac.prototype._update = function (data) {
  this._hash.push(data)
}

Hmac.prototype._final = function () {
  var h = this._alg(Buffer.concat(this._hash))
  return this._alg(Buffer.concat([this._opad, h]))
}
module.exports = Hmac

},{"cipher-base":169,"inherits":245,"safe-buffer":326}],176:[function(require,module,exports){
'use strict'

exports.randomBytes = exports.rng = exports.pseudoRandomBytes = exports.prng = require('randombytes')
exports.createHash = exports.Hash = require('create-hash')
exports.createHmac = exports.Hmac = require('create-hmac')

var algos = require('browserify-sign/algos')
var algoKeys = Object.keys(algos)
var hashes = ['sha1', 'sha224', 'sha256', 'sha384', 'sha512', 'md5', 'rmd160'].concat(algoKeys)
exports.getHashes = function () {
  return hashes
}

var p = require('pbkdf2')
exports.pbkdf2 = p.pbkdf2
exports.pbkdf2Sync = p.pbkdf2Sync

var aes = require('browserify-cipher')

exports.Cipher = aes.Cipher
exports.createCipher = aes.createCipher
exports.Cipheriv = aes.Cipheriv
exports.createCipheriv = aes.createCipheriv
exports.Decipher = aes.Decipher
exports.createDecipher = aes.createDecipher
exports.Decipheriv = aes.Decipheriv
exports.createDecipheriv = aes.createDecipheriv
exports.getCiphers = aes.getCiphers
exports.listCiphers = aes.listCiphers

var dh = require('diffie-hellman')

exports.DiffieHellmanGroup = dh.DiffieHellmanGroup
exports.createDiffieHellmanGroup = dh.createDiffieHellmanGroup
exports.getDiffieHellman = dh.getDiffieHellman
exports.createDiffieHellman = dh.createDiffieHellman
exports.DiffieHellman = dh.DiffieHellman

var sign = require('browserify-sign')

exports.createSign = sign.createSign
exports.Sign = sign.Sign
exports.createVerify = sign.createVerify
exports.Verify = sign.Verify

exports.createECDH = require('create-ecdh')

var publicEncrypt = require('public-encrypt')

exports.publicEncrypt = publicEncrypt.publicEncrypt
exports.privateEncrypt = publicEncrypt.privateEncrypt
exports.publicDecrypt = publicEncrypt.publicDecrypt
exports.privateDecrypt = publicEncrypt.privateDecrypt

// the least I can do is make error messages for the rest of the node.js/crypto api.
// ;[
//   'createCredentials'
// ].forEach(function (name) {
//   exports[name] = function () {
//     throw new Error([
//       'sorry, ' + name + ' is not implemented yet',
//       'we accept pull requests',
//       'https://github.com/crypto-browserify/crypto-browserify'
//     ].join('\n'))
//   }
// })

var rf = require('randomfill')

exports.randomFill = rf.randomFill
exports.randomFillSync = rf.randomFillSync

exports.createCredentials = function () {
  throw new Error([
    'sorry, createCredentials is not implemented yet',
    'we accept pull requests',
    'https://github.com/crypto-browserify/crypto-browserify'
  ].join('\n'))
}

exports.constants = {
  'DH_CHECK_P_NOT_SAFE_PRIME': 2,
  'DH_CHECK_P_NOT_PRIME': 1,
  'DH_UNABLE_TO_CHECK_GENERATOR': 4,
  'DH_NOT_SUITABLE_GENERATOR': 8,
  'NPN_ENABLED': 1,
  'ALPN_ENABLED': 1,
  'RSA_PKCS1_PADDING': 1,
  'RSA_SSLV23_PADDING': 2,
  'RSA_NO_PADDING': 3,
  'RSA_PKCS1_OAEP_PADDING': 4,
  'RSA_X931_PADDING': 5,
  'RSA_PKCS1_PSS_PADDING': 6,
  'POINT_CONVERSION_COMPRESSED': 2,
  'POINT_CONVERSION_UNCOMPRESSED': 4,
  'POINT_CONVERSION_HYBRID': 6
}

},{"browserify-cipher":156,"browserify-sign":163,"browserify-sign/algos":160,"create-ecdh":171,"create-hash":172,"create-hmac":174,"diffie-hellman":185,"pbkdf2":310,"public-encrypt":317,"randombytes":323,"randomfill":324}],177:[function(require,module,exports){
!function(t,n){"object"==typeof exports&&"undefined"!=typeof module?module.exports=n():"function"==typeof define&&define.amd?define(n):t.dayjs=n()}(this,function(){"use strict";var t="millisecond",n="second",e="minute",r="hour",i="day",s="week",u="month",a="quarter",o="year",h=/^(\d{4})-?(\d{1,2})-?(\d{0,2})[^0-9]*(\d{1,2})?:?(\d{1,2})?:?(\d{1,2})?.?(\d{1,3})?$/,f=/\[([^\]]+)]|Y{2,4}|M{1,4}|D{1,2}|d{1,4}|H{1,2}|h{1,2}|a|A|m{1,2}|s{1,2}|Z{1,2}|SSS/g,c=function(t,n,e){var r=String(t);return!r||r.length>=n?t:""+Array(n+1-r.length).join(e)+t},d={s:c,z:function(t){var n=-t.utcOffset(),e=Math.abs(n),r=Math.floor(e/60),i=e%60;return(n<=0?"+":"-")+c(r,2,"0")+":"+c(i,2,"0")},m:function(t,n){var e=12*(n.year()-t.year())+(n.month()-t.month()),r=t.clone().add(e,u),i=n-r<0,s=t.clone().add(e+(i?-1:1),u);return Number(-(e+(n-r)/(i?r-s:s-r))||0)},a:function(t){return t<0?Math.ceil(t)||0:Math.floor(t)},p:function(h){return{M:u,y:o,w:s,d:i,h:r,m:e,s:n,ms:t,Q:a}[h]||String(h||"").toLowerCase().replace(/s$/,"")},u:function(t){return void 0===t}},$={name:"en",weekdays:"Sunday_Monday_Tuesday_Wednesday_Thursday_Friday_Saturday".split("_"),months:"January_February_March_April_May_June_July_August_September_October_November_December".split("_")},l="en",m={};m[l]=$;var y=function(t){return t instanceof v},M=function(t,n,e){var r;if(!t)return l;if("string"==typeof t)m[t]&&(r=t),n&&(m[t]=n,r=t);else{var i=t.name;m[i]=t,r=i}return e||(l=r),r},g=function(t,n,e){if(y(t))return t.clone();var r=n?"string"==typeof n?{format:n,pl:e}:n:{};return r.date=t,new v(r)},D=d;D.l=M,D.i=y,D.w=function(t,n){return g(t,{locale:n.$L,utc:n.$u})};var v=function(){function c(t){this.$L=this.$L||M(t.locale,null,!0),this.parse(t)}var d=c.prototype;return d.parse=function(t){this.$d=function(t){var n=t.date,e=t.utc;if(null===n)return new Date(NaN);if(D.u(n))return new Date;if(n instanceof Date)return new Date(n);if("string"==typeof n&&!/Z$/i.test(n)){var r=n.match(h);if(r)return e?new Date(Date.UTC(r[1],r[2]-1,r[3]||1,r[4]||0,r[5]||0,r[6]||0,r[7]||0)):new Date(r[1],r[2]-1,r[3]||1,r[4]||0,r[5]||0,r[6]||0,r[7]||0)}return new Date(n)}(t),this.init()},d.init=function(){var t=this.$d;this.$y=t.getFullYear(),this.$M=t.getMonth(),this.$D=t.getDate(),this.$W=t.getDay(),this.$H=t.getHours(),this.$m=t.getMinutes(),this.$s=t.getSeconds(),this.$ms=t.getMilliseconds()},d.$utils=function(){return D},d.isValid=function(){return!("Invalid Date"===this.$d.toString())},d.isSame=function(t,n){var e=g(t);return this.startOf(n)<=e&&e<=this.endOf(n)},d.isAfter=function(t,n){return g(t)<this.startOf(n)},d.isBefore=function(t,n){return this.endOf(n)<g(t)},d.$g=function(t,n,e){return D.u(t)?this[n]:this.set(e,t)},d.year=function(t){return this.$g(t,"$y",o)},d.month=function(t){return this.$g(t,"$M",u)},d.day=function(t){return this.$g(t,"$W",i)},d.date=function(t){return this.$g(t,"$D","date")},d.hour=function(t){return this.$g(t,"$H",r)},d.minute=function(t){return this.$g(t,"$m",e)},d.second=function(t){return this.$g(t,"$s",n)},d.millisecond=function(n){return this.$g(n,"$ms",t)},d.unix=function(){return Math.floor(this.valueOf()/1e3)},d.valueOf=function(){return this.$d.getTime()},d.startOf=function(t,a){var h=this,f=!!D.u(a)||a,c=D.p(t),d=function(t,n){var e=D.w(h.$u?Date.UTC(h.$y,n,t):new Date(h.$y,n,t),h);return f?e:e.endOf(i)},$=function(t,n){return D.w(h.toDate()[t].apply(h.toDate(),(f?[0,0,0,0]:[23,59,59,999]).slice(n)),h)},l=this.$W,m=this.$M,y=this.$D,M="set"+(this.$u?"UTC":"");switch(c){case o:return f?d(1,0):d(31,11);case u:return f?d(1,m):d(0,m+1);case s:var g=this.$locale().weekStart||0,v=(l<g?l+7:l)-g;return d(f?y-v:y+(6-v),m);case i:case"date":return $(M+"Hours",0);case r:return $(M+"Minutes",1);case e:return $(M+"Seconds",2);case n:return $(M+"Milliseconds",3);default:return this.clone()}},d.endOf=function(t){return 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e=t||"YYYY-MM-DDTHH:mm:ssZ",r=D.z(this),i=this.$locale(),s=this.$H,u=this.$m,a=this.$M,o=i.weekdays,h=i.months,c=function(t,r,i,s){return t&&(t[r]||t(n,e))||i[r].substr(0,s)},d=function(t){return D.s(s%12||12,t,"0")},$=i.meridiem||function(t,n,e){var r=t<12?"AM":"PM";return e?r.toLowerCase():r},l={YY:String(this.$y).slice(-2),YYYY:this.$y,M:a+1,MM:D.s(a+1,2,"0"),MMM:c(i.monthsShort,a,h,3),MMMM:h[a]||h(this,e),D:this.$D,DD:D.s(this.$D,2,"0"),d:String(this.$W),dd:c(i.weekdaysMin,this.$W,o,2),ddd:c(i.weekdaysShort,this.$W,o,3),dddd:o[this.$W],H:String(s),HH:D.s(s,2,"0"),h:d(1),hh:d(2),a:$(s,u,!0),A:$(s,u,!1),m:String(u),mm:D.s(u,2,"0"),s:String(this.$s),ss:D.s(this.$s,2,"0"),SSS:D.s(this.$ms,3,"0"),Z:r};return e.replace(f,function(t,n){return n||l[t]||r.replace(":","")})},d.utcOffset=function(){return 15*-Math.round(this.$d.getTimezoneOffset()/15)},d.diff=function(t,h,f){var c,d=D.p(h),$=g(t),l=6e4*($.utcOffset()-this.utcOffset()),m=this-$,y=D.m(this,$);return y=(c={},c[o]=y/12,c[u]=y,c[a]=y/3,c[s]=(m-l)/6048e5,c[i]=(m-l)/864e5,c[r]=m/36e5,c[e]=m/6e4,c[n]=m/1e3,c)[d]||m,f?y:D.a(y)},d.daysInMonth=function(){return this.endOf(u).$D},d.$locale=function(){return m[this.$L]},d.locale=function(t,n){if(!t)return this.$L;var e=this.clone();return e.$L=M(t,n,!0),e},d.clone=function(){return D.w(this.toDate(),this)},d.toDate=function(){return new Date(this.$d)},d.toJSON=function(){return this.isValid()?this.toISOString():null},d.toISOString=function(){return this.$d.toISOString()},d.toString=function(){return this.$d.toUTCString()},c}();return g.prototype=v.prototype,g.extend=function(t,n){return t(n,v,g),g},g.locale=M,g.isDayjs=y,g.unix=function(t){return g(1e3*t)},g.en=m[l],g.Ls=m,g});

},{}],178:[function(require,module,exports){
!function(t,n){"object"==typeof exports&&"undefined"!=typeof module?module.exports=n():"function"==typeof define&&define.amd?define(n):t.dayjs_plugin_customParseFormat=n()}(this,function(){"use strict";var t,n=/(\[[^[]*\])|([-:/.()\s]+)|(A|a|YYYY|YY?|MM?M?M?|Do|DD?|hh?|HH?|mm?|ss?|S{1,3}|z|ZZ?)/g,e=/\d\d/,r=/\d\d?/,o=/\d*[^\s\d-:/.()]+/;var s=function(t){return function(n){this[t]=+n}},i=[/[+-]\d\d:?\d\d/,function(t){var n,e;(this.zone||(this.zone={})).offset=(n=t.match(/([+-]|\d\d)/g),0===(e=60*n[1]+ +n[2])?0:"+"===n[0]?-e:e)}],a={A:[/[AP]M/,function(t){this.afternoon="PM"===t}],a:[/[ap]m/,function(t){this.afternoon="pm"===t}],S:[/\d/,function(t){this.milliseconds=100*+t}],SS:[e,function(t){this.milliseconds=10*+t}],SSS:[/\d{3}/,function(t){this.milliseconds=+t}],s:[r,s("seconds")],ss:[r,s("seconds")],m:[r,s("minutes")],mm:[r,s("minutes")],H:[r,s("hours")],h:[r,s("hours")],HH:[r,s("hours")],hh:[r,s("hours")],D:[r,s("day")],DD:[e,s("day")],Do:[o,function(n){var e=t.ordinal,r=n.match(/\d+/);if(this.day=r[0],e)for(var o=1;o<=31;o+=1)e(o).replace(/\[|\]/g,"")===n&&(this.day=o)}],M:[r,s("month")],MM:[e,s("month")],MMM:[o,function(n){var e=t,r=e.months,o=e.monthsShort,s=o?o.findIndex(function(t){return t===n}):r.findIndex(function(t){return t.substr(0,3)===n});if(s<0)throw new Error;this.month=s+1}],MMMM:[o,function(n){var e=t.months.indexOf(n);if(e<0)throw new Error;this.month=e+1}],Y:[/[+-]?\d+/,s("year")],YY:[e,function(t){t=+t,this.year=t+(t>68?1900:2e3)}],YYYY:[/\d{4}/,s("year")],Z:i,ZZ:i};var u=function(t,e,r){try{var o=function(t){for(var e=t.match(n),r=e.length,o=0;o<r;o+=1){var s=e[o],i=a[s],u=i&&i[0],f=i&&i[1];e[o]=f?{regex:u,parser:f}:s.replace(/^\[|\]$/g,"")}return function(t){for(var n={},o=0,s=0;o<r;o+=1){var i=e[o];if("string"==typeof i)s+=i.length;else{var a=i.regex,u=i.parser,f=t.substr(s),h=a.exec(f)[0];u.call(n,h),t=t.replace(h,"")}}return function(t){var n=t.afternoon;if(void 0!==n){var e=t.hours;n?e<12&&(t.hours+=12):12===e&&(t.hours=0),delete t.afternoon}}(n),n}}(e)(t),s=o.year,i=o.month,u=o.day,f=o.hours,h=o.minutes,d=o.seconds,c=o.milliseconds,m=o.zone;if(m)return new Date(Date.UTC(s,i-1,u,f||0,h||0,d||0,c||0)+60*m.offset*1e3);var l=new Date,v=s||l.getFullYear(),p=i>0?i-1:l.getMonth(),M=u||l.getDate(),y=f||0,D=h||0,Y=d||0,g=c||0;return r?new Date(Date.UTC(v,p,M,y,D,Y,g)):new Date(v,p,M,y,D,Y,g)}catch(t){return new Date("")}};return function(n,e,r){var o=e.prototype,s=o.parse;o.parse=function(n){var e=n.date,o=n.format,i=n.pl,a=n.utc;this.$u=a,o?(t=i?r.Ls[i]:this.$locale(),this.$d=u(e,o,a),this.init(n)):s.call(this,n)}}});

},{}],179:[function(require,module,exports){
'use strict';

exports.utils = require('./des/utils');
exports.Cipher = require('./des/cipher');
exports.DES = require('./des/des');
exports.CBC = require('./des/cbc');
exports.EDE = require('./des/ede');

},{"./des/cbc":180,"./des/cipher":181,"./des/des":182,"./des/ede":183,"./des/utils":184}],180:[function(require,module,exports){
'use strict';

var assert = require('minimalistic-assert');
var inherits = require('inherits');

var proto = {};

function CBCState(iv) {
  assert.equal(iv.length, 8, 'Invalid IV length');

  this.iv = new Array(8);
  for (var i = 0; i < this.iv.length; i++)
    this.iv[i] = iv[i];
}

function instantiate(Base) {
  function CBC(options) {
    Base.call(this, options);
    this._cbcInit();
  }
  inherits(CBC, Base);

  var keys = Object.keys(proto);
  for (var i = 0; i < keys.length; i++) {
    var key = keys[i];
    CBC.prototype[key] = proto[key];
  }

  CBC.create = function create(options) {
    return new CBC(options);
  };

  return CBC;
}

exports.instantiate = instantiate;

proto._cbcInit = function _cbcInit() {
  var state = new CBCState(this.options.iv);
  this._cbcState = state;
};

proto._update = function _update(inp, inOff, out, outOff) {
  var state = this._cbcState;
  var superProto = this.constructor.super_.prototype;

  var iv = state.iv;
  if (this.type === 'encrypt') {
    for (var i = 0; i < this.blockSize; i++)
      iv[i] ^= inp[inOff + i];

    superProto._update.call(this, iv, 0, out, outOff);

    for (var i = 0; i < this.blockSize; i++)
      iv[i] = out[outOff + i];
  } else {
    superProto._update.call(this, inp, inOff, out, outOff);

    for (var i = 0; i < this.blockSize; i++)
      out[outOff + i] ^= iv[i];

    for (var i = 0; i < this.blockSize; i++)
      iv[i] = inp[inOff + i];
  }
};

},{"inherits":245,"minimalistic-assert":287}],181:[function(require,module,exports){
'use strict';

var assert = require('minimalistic-assert');

function Cipher(options) {
  this.options = options;

  this.type = this.options.type;
  this.blockSize = 8;
  this._init();

  this.buffer = new Array(this.blockSize);
  this.bufferOff = 0;
}
module.exports = Cipher;

Cipher.prototype._init = function _init() {
  // Might be overrided
};

Cipher.prototype.update = function update(data) {
  if (data.length === 0)
    return [];

  if (this.type === 'decrypt')
    return this._updateDecrypt(data);
  else
    return this._updateEncrypt(data);
};

Cipher.prototype._buffer = function _buffer(data, off) {
  // Append data to buffer
  var min = Math.min(this.buffer.length - this.bufferOff, data.length - off);
  for (var i = 0; i < min; i++)
    this.buffer[this.bufferOff + i] = data[off + i];
  this.bufferOff += min;

  // Shift next
  return min;
};

Cipher.prototype._flushBuffer = function _flushBuffer(out, off) {
  this._update(this.buffer, 0, out, off);
  this.bufferOff = 0;
  return this.blockSize;
};

Cipher.prototype._updateEncrypt = function _updateEncrypt(data) {
  var inputOff = 0;
  var outputOff = 0;

  var count = ((this.bufferOff + data.length) / this.blockSize) | 0;
  var out = new Array(count * this.blockSize);

  if (this.bufferOff !== 0) {
    inputOff += this._buffer(data, inputOff);

    if (this.bufferOff === this.buffer.length)
      outputOff += this._flushBuffer(out, outputOff);
  }

  // Write blocks
  var max = data.length - ((data.length - inputOff) % this.blockSize);
  for (; inputOff < max; inputOff += this.blockSize) {
    this._update(data, inputOff, out, outputOff);
    outputOff += this.blockSize;
  }

  // Queue rest
  for (; inputOff < data.length; inputOff++, this.bufferOff++)
    this.buffer[this.bufferOff] = data[inputOff];

  return out;
};

Cipher.prototype._updateDecrypt = function _updateDecrypt(data) {
  var inputOff = 0;
  var outputOff = 0;

  var count = Math.ceil((this.bufferOff + data.length) / this.blockSize) - 1;
  var out = new Array(count * this.blockSize);

  // TODO(indutny): optimize it, this is far from optimal
  for (; count > 0; count--) {
    inputOff += this._buffer(data, inputOff);
    outputOff += this._flushBuffer(out, outputOff);
  }

  // Buffer rest of the input
  inputOff += this._buffer(data, inputOff);

  return out;
};

Cipher.prototype.final = function final(buffer) {
  var first;
  if (buffer)
    first = this.update(buffer);

  var last;
  if (this.type === 'encrypt')
    last = this._finalEncrypt();
  else
    last = this._finalDecrypt();

  if (first)
    return first.concat(last);
  else
    return last;
};

Cipher.prototype._pad = function _pad(buffer, off) {
  if (off === 0)
    return false;

  while (off < buffer.length)
    buffer[off++] = 0;

  return true;
};

Cipher.prototype._finalEncrypt = function _finalEncrypt() {
  if (!this._pad(this.buffer, this.bufferOff))
    return [];

  var out = new Array(this.blockSize);
  this._update(this.buffer, 0, out, 0);
  return out;
};

Cipher.prototype._unpad = function _unpad(buffer) {
  return buffer;
};

Cipher.prototype._finalDecrypt = function _finalDecrypt() {
  assert.equal(this.bufferOff, this.blockSize, 'Not enough data to decrypt');
  var out = new Array(this.blockSize);
  this._flushBuffer(out, 0);

  return this._unpad(out);
};

},{"minimalistic-assert":287}],182:[function(require,module,exports){
'use strict';

var assert = require('minimalistic-assert');
var inherits = require('inherits');

var des = require('../des');
var utils = des.utils;
var Cipher = des.Cipher;

function DESState() {
  this.tmp = new Array(2);
  this.keys = null;
}

function DES(options) {
  Cipher.call(this, options);

  var state = new DESState();
  this._desState = state;

  this.deriveKeys(state, options.key);
}
inherits(DES, Cipher);
module.exports = DES;

DES.create = function create(options) {
  return new DES(options);
};

var shiftTable = [
  1, 1, 2, 2, 2, 2, 2, 2,
  1, 2, 2, 2, 2, 2, 2, 1
];

DES.prototype.deriveKeys = function deriveKeys(state, key) {
  state.keys = new Array(16 * 2);

  assert.equal(key.length, this.blockSize, 'Invalid key length');

  var kL = utils.readUInt32BE(key, 0);
  var kR = utils.readUInt32BE(key, 4);

  utils.pc1(kL, kR, state.tmp, 0);
  kL = state.tmp[0];
  kR = state.tmp[1];
  for (var i = 0; i < state.keys.length; i += 2) {
    var shift = shiftTable[i >>> 1];
    kL = utils.r28shl(kL, shift);
    kR = utils.r28shl(kR, shift);
    utils.pc2(kL, kR, state.keys, i);
  }
};

DES.prototype._update = function _update(inp, inOff, out, outOff) {
  var state = this._desState;

  var l = utils.readUInt32BE(inp, inOff);
  var r = utils.readUInt32BE(inp, inOff + 4);

  // Initial Permutation
  utils.ip(l, r, state.tmp, 0);
  l = state.tmp[0];
  r = state.tmp[1];

  if (this.type === 'encrypt')
    this._encrypt(state, l, r, state.tmp, 0);
  else
    this._decrypt(state, l, r, state.tmp, 0);

  l = state.tmp[0];
  r = state.tmp[1];

  utils.writeUInt32BE(out, l, outOff);
  utils.writeUInt32BE(out, r, outOff + 4);
};

DES.prototype._pad = function _pad(buffer, off) {
  var value = buffer.length - off;
  for (var i = off; i < buffer.length; i++)
    buffer[i] = value;

  return true;
};

DES.prototype._unpad = function _unpad(buffer) {
  var pad = buffer[buffer.length - 1];
  for (var i = buffer.length - pad; i < buffer.length; i++)
    assert.equal(buffer[i], pad);

  return buffer.slice(0, buffer.length - pad);
};

DES.prototype._encrypt = function _encrypt(state, lStart, rStart, out, off) {
  var l = lStart;
  var r = rStart;

  // Apply f() x16 times
  for (var i = 0; i < state.keys.length; i += 2) {
    var keyL = state.keys[i];
    var keyR = state.keys[i + 1];

    // f(r, k)
    utils.expand(r, state.tmp, 0);

    keyL ^= state.tmp[0];
    keyR ^= state.tmp[1];
    var s = utils.substitute(keyL, keyR);
    var f = utils.permute(s);

    var t = r;
    r = (l ^ f) >>> 0;
    l = t;
  }

  // Reverse Initial Permutation
  utils.rip(r, l, out, off);
};

DES.prototype._decrypt = function _decrypt(state, lStart, rStart, out, off) {
  var l = rStart;
  var r = lStart;

  // Apply f() x16 times
  for (var i = state.keys.length - 2; i >= 0; i -= 2) {
    var keyL = state.keys[i];
    var keyR = state.keys[i + 1];

    // f(r, k)
    utils.expand(l, state.tmp, 0);

    keyL ^= state.tmp[0];
    keyR ^= state.tmp[1];
    var s = utils.substitute(keyL, keyR);
    var f = utils.permute(s);

    var t = l;
    l = (r ^ f) >>> 0;
    r = t;
  }

  // Reverse Initial Permutation
  utils.rip(l, r, out, off);
};

},{"../des":179,"inherits":245,"minimalistic-assert":287}],183:[function(require,module,exports){
'use strict';

var assert = require('minimalistic-assert');
var inherits = require('inherits');

var des = require('../des');
var Cipher = des.Cipher;
var DES = des.DES;

function EDEState(type, key) {
  assert.equal(key.length, 24, 'Invalid key length');

  var k1 = key.slice(0, 8);
  var k2 = key.slice(8, 16);
  var k3 = key.slice(16, 24);

  if (type === 'encrypt') {
    this.ciphers = [
      DES.create({ type: 'encrypt', key: k1 }),
      DES.create({ type: 'decrypt', key: k2 }),
      DES.create({ type: 'encrypt', key: k3 })
    ];
  } else {
    this.ciphers = [
      DES.create({ type: 'decrypt', key: k3 }),
      DES.create({ type: 'encrypt', key: k2 }),
      DES.create({ type: 'decrypt', key: k1 })
    ];
  }
}

function EDE(options) {
  Cipher.call(this, options);

  var state = new EDEState(this.type, this.options.key);
  this._edeState = state;
}
inherits(EDE, Cipher);

module.exports = EDE;

EDE.create = function create(options) {
  return new EDE(options);
};

EDE.prototype._update = function _update(inp, inOff, out, outOff) {
  var state = this._edeState;

  state.ciphers[0]._update(inp, inOff, out, outOff);
  state.ciphers[1]._update(out, outOff, out, outOff);
  state.ciphers[2]._update(out, outOff, out, outOff);
};

EDE.prototype._pad = DES.prototype._pad;
EDE.prototype._unpad = DES.prototype._unpad;

},{"../des":179,"inherits":245,"minimalistic-assert":287}],184:[function(require,module,exports){
'use strict';

exports.readUInt32BE = function readUInt32BE(bytes, off) {
  var res =  (bytes[0 + off] << 24) |
             (bytes[1 + off] << 16) |
             (bytes[2 + off] << 8) |
             bytes[3 + off];
  return res >>> 0;
};

exports.writeUInt32BE = function writeUInt32BE(bytes, value, off) {
  bytes[0 + off] = value >>> 24;
  bytes[1 + off] = (value >>> 16) & 0xff;
  bytes[2 + off] = (value >>> 8) & 0xff;
  bytes[3 + off] = value & 0xff;
};

exports.ip = function ip(inL, inR, out, off) {
  var outL = 0;
  var outR = 0;

  for (var i = 6; i >= 0; i -= 2) {
    for (var j = 0; j <= 24; j += 8) {
      outL <<= 1;
      outL |= (inR >>> (j + i)) & 1;
    }
    for (var j = 0; j <= 24; j += 8) {
      outL <<= 1;
      outL |= (inL >>> (j + i)) & 1;
    }
  }

  for (var i = 6; i >= 0; i -= 2) {
    for (var j = 1; j <= 25; j += 8) {
      outR <<= 1;
      outR |= (inR >>> (j + i)) & 1;
    }
    for (var j = 1; j <= 25; j += 8) {
      outR <<= 1;
      outR |= (inL >>> (j + i)) & 1;
    }
  }

  out[off + 0] = outL >>> 0;
  out[off + 1] = outR >>> 0;
};

exports.rip = function rip(inL, inR, out, off) {
  var outL = 0;
  var outR = 0;

  for (var i = 0; i < 4; i++) {
    for (var j = 24; j >= 0; j -= 8) {
      outL <<= 1;
      outL |= (inR >>> (j + i)) & 1;
      outL <<= 1;
      outL |= (inL >>> (j + i)) & 1;
    }
  }
  for (var i = 4; i < 8; i++) {
    for (var j = 24; j >= 0; j -= 8) {
      outR <<= 1;
      outR |= (inR >>> (j + i)) & 1;
      outR <<= 1;
      outR |= (inL >>> (j + i)) & 1;
    }
  }

  out[off + 0] = outL >>> 0;
  out[off + 1] = outR >>> 0;
};

exports.pc1 = function pc1(inL, inR, out, off) {
  var outL = 0;
  var outR = 0;

  // 7, 15, 23, 31, 39, 47, 55, 63
  // 6, 14, 22, 30, 39, 47, 55, 63
  // 5, 13, 21, 29, 39, 47, 55, 63
  // 4, 12, 20, 28
  for (var i = 7; i >= 5; i--) {
    for (var j = 0; j <= 24; j += 8) {
      outL <<= 1;
      outL |= (inR >> (j + i)) & 1;
    }
    for (var j = 0; j <= 24; j += 8) {
      outL <<= 1;
      outL |= (inL >> (j + i)) & 1;
    }
  }
  for (var j = 0; j <= 24; j += 8) {
    outL <<= 1;
    outL |= (inR >> (j + i)) & 1;
  }

  // 1, 9, 17, 25, 33, 41, 49, 57
  // 2, 10, 18, 26, 34, 42, 50, 58
  // 3, 11, 19, 27, 35, 43, 51, 59
  // 36, 44, 52, 60
  for (var i = 1; i <= 3; i++) {
    for (var j = 0; j <= 24; j += 8) {
      outR <<= 1;
      outR |= (inR >> (j + i)) & 1;
    }
    for (var j = 0; j <= 24; j += 8) {
      outR <<= 1;
      outR |= (inL >> (j + i)) & 1;
    }
  }
  for (var j = 0; j <= 24; j += 8) {
    outR <<= 1;
    outR |= (inL >> (j + i)) & 1;
  }

  out[off + 0] = outL >>> 0;
  out[off + 1] = outR >>> 0;
};

exports.r28shl = function r28shl(num, shift) {
  return ((num << shift) & 0xfffffff) | (num >>> (28 - shift));
};

var pc2table = [
  // inL => outL
  14, 11, 17, 4, 27, 23, 25, 0,
  13, 22, 7, 18, 5, 9, 16, 24,
  2, 20, 12, 21, 1, 8, 15, 26,

  // inR => outR
  15, 4, 25, 19, 9, 1, 26, 16,
  5, 11, 23, 8, 12, 7, 17, 0,
  22, 3, 10, 14, 6, 20, 27, 24
];

exports.pc2 = function pc2(inL, inR, out, off) {
  var outL = 0;
  var outR = 0;

  var len = pc2table.length >>> 1;
  for (var i = 0; i < len; i++) {
    outL <<= 1;
    outL |= (inL >>> pc2table[i]) & 0x1;
  }
  for (var i = len; i < pc2table.length; i++) {
    outR <<= 1;
    outR |= (inR >>> pc2table[i]) & 0x1;
  }

  out[off + 0] = outL >>> 0;
  out[off + 1] = outR >>> 0;
};

exports.expand = function expand(r, out, off) {
  var outL = 0;
  var outR = 0;

  outL = ((r & 1) << 5) | (r >>> 27);
  for (var i = 23; i >= 15; i -= 4) {
    outL <<= 6;
    outL |= (r >>> i) & 0x3f;
  }
  for (var i = 11; i >= 3; i -= 4) {
    outR |= (r >>> i) & 0x3f;
    outR <<= 6;
  }
  outR |= ((r & 0x1f) << 1) | (r >>> 31);

  out[off + 0] = outL >>> 0;
  out[off + 1] = outR >>> 0;
};

var sTable = [
  14, 0, 4, 15, 13, 7, 1, 4, 2, 14, 15, 2, 11, 13, 8, 1,
  3, 10, 10, 6, 6, 12, 12, 11, 5, 9, 9, 5, 0, 3, 7, 8,
  4, 15, 1, 12, 14, 8, 8, 2, 13, 4, 6, 9, 2, 1, 11, 7,
  15, 5, 12, 11, 9, 3, 7, 14, 3, 10, 10, 0, 5, 6, 0, 13,

  15, 3, 1, 13, 8, 4, 14, 7, 6, 15, 11, 2, 3, 8, 4, 14,
  9, 12, 7, 0, 2, 1, 13, 10, 12, 6, 0, 9, 5, 11, 10, 5,
  0, 13, 14, 8, 7, 10, 11, 1, 10, 3, 4, 15, 13, 4, 1, 2,
  5, 11, 8, 6, 12, 7, 6, 12, 9, 0, 3, 5, 2, 14, 15, 9,

  10, 13, 0, 7, 9, 0, 14, 9, 6, 3, 3, 4, 15, 6, 5, 10,
  1, 2, 13, 8, 12, 5, 7, 14, 11, 12, 4, 11, 2, 15, 8, 1,
  13, 1, 6, 10, 4, 13, 9, 0, 8, 6, 15, 9, 3, 8, 0, 7,
  11, 4, 1, 15, 2, 14, 12, 3, 5, 11, 10, 5, 14, 2, 7, 12,

  7, 13, 13, 8, 14, 11, 3, 5, 0, 6, 6, 15, 9, 0, 10, 3,
  1, 4, 2, 7, 8, 2, 5, 12, 11, 1, 12, 10, 4, 14, 15, 9,
  10, 3, 6, 15, 9, 0, 0, 6, 12, 10, 11, 1, 7, 13, 13, 8,
  15, 9, 1, 4, 3, 5, 14, 11, 5, 12, 2, 7, 8, 2, 4, 14,

  2, 14, 12, 11, 4, 2, 1, 12, 7, 4, 10, 7, 11, 13, 6, 1,
  8, 5, 5, 0, 3, 15, 15, 10, 13, 3, 0, 9, 14, 8, 9, 6,
  4, 11, 2, 8, 1, 12, 11, 7, 10, 1, 13, 14, 7, 2, 8, 13,
  15, 6, 9, 15, 12, 0, 5, 9, 6, 10, 3, 4, 0, 5, 14, 3,

  12, 10, 1, 15, 10, 4, 15, 2, 9, 7, 2, 12, 6, 9, 8, 5,
  0, 6, 13, 1, 3, 13, 4, 14, 14, 0, 7, 11, 5, 3, 11, 8,
  9, 4, 14, 3, 15, 2, 5, 12, 2, 9, 8, 5, 12, 15, 3, 10,
  7, 11, 0, 14, 4, 1, 10, 7, 1, 6, 13, 0, 11, 8, 6, 13,

  4, 13, 11, 0, 2, 11, 14, 7, 15, 4, 0, 9, 8, 1, 13, 10,
  3, 14, 12, 3, 9, 5, 7, 12, 5, 2, 10, 15, 6, 8, 1, 6,
  1, 6, 4, 11, 11, 13, 13, 8, 12, 1, 3, 4, 7, 10, 14, 7,
  10, 9, 15, 5, 6, 0, 8, 15, 0, 14, 5, 2, 9, 3, 2, 12,

  13, 1, 2, 15, 8, 13, 4, 8, 6, 10, 15, 3, 11, 7, 1, 4,
  10, 12, 9, 5, 3, 6, 14, 11, 5, 0, 0, 14, 12, 9, 7, 2,
  7, 2, 11, 1, 4, 14, 1, 7, 9, 4, 12, 10, 14, 8, 2, 13,
  0, 15, 6, 12, 10, 9, 13, 0, 15, 3, 3, 5, 5, 6, 8, 11
];

exports.substitute = function substitute(inL, inR) {
  var out = 0;
  for (var i = 0; i < 4; i++) {
    var b = (inL >>> (18 - i * 6)) & 0x3f;
    var sb = sTable[i * 0x40 + b];

    out <<= 4;
    out |= sb;
  }
  for (var i = 0; i < 4; i++) {
    var b = (inR >>> (18 - i * 6)) & 0x3f;
    var sb = sTable[4 * 0x40 + i * 0x40 + b];

    out <<= 4;
    out |= sb;
  }
  return out >>> 0;
};

var permuteTable = [
  16, 25, 12, 11, 3, 20, 4, 15, 31, 17, 9, 6, 27, 14, 1, 22,
  30, 24, 8, 18, 0, 5, 29, 23, 13, 19, 2, 26, 10, 21, 28, 7
];

exports.permute = function permute(num) {
  var out = 0;
  for (var i = 0; i < permuteTable.length; i++) {
    out <<= 1;
    out |= (num >>> permuteTable[i]) & 0x1;
  }
  return out >>> 0;
};

exports.padSplit = function padSplit(num, size, group) {
  var str = num.toString(2);
  while (str.length < size)
    str = '0' + str;

  var out = [];
  for (var i = 0; i < size; i += group)
    out.push(str.slice(i, i + group));
  return out.join(' ');
};

},{}],185:[function(require,module,exports){
(function (Buffer){
var generatePrime = require('./lib/generatePrime')
var primes = require('./lib/primes.json')

var DH = require('./lib/dh')

function getDiffieHellman (mod) {
  var prime = new Buffer(primes[mod].prime, 'hex')
  var gen = new Buffer(primes[mod].gen, 'hex')

  return new DH(prime, gen)
}

var ENCODINGS = {
  'binary': true, 'hex': true, 'base64': true
}

function createDiffieHellman (prime, enc, generator, genc) {
  if (Buffer.isBuffer(enc) || ENCODINGS[enc] === undefined) {
    return createDiffieHellman(prime, 'binary', enc, generator)
  }

  enc = enc || 'binary'
  genc = genc || 'binary'
  generator = generator || new Buffer([2])

  if (!Buffer.isBuffer(generator)) {
    generator = new Buffer(generator, genc)
  }

  if (typeof prime === 'number') {
    return new DH(generatePrime(prime, generator), generator, true)
  }

  if (!Buffer.isBuffer(prime)) {
    prime = new Buffer(prime, enc)
  }

  return new DH(prime, generator, true)
}

exports.DiffieHellmanGroup = exports.createDiffieHellmanGroup = exports.getDiffieHellman = getDiffieHellman
exports.createDiffieHellman = exports.DiffieHellman = createDiffieHellman

}).call(this,require("buffer").Buffer)
},{"./lib/dh":186,"./lib/generatePrime":187,"./lib/primes.json":188,"buffer":168}],186:[function(require,module,exports){
(function (Buffer){
var BN = require('bn.js');
var MillerRabin = require('miller-rabin');
var millerRabin = new MillerRabin();
var TWENTYFOUR = new BN(24);
var ELEVEN = new BN(11);
var TEN = new BN(10);
var THREE = new BN(3);
var SEVEN = new BN(7);
var primes = require('./generatePrime');
var randomBytes = require('randombytes');
module.exports = DH;

function setPublicKey(pub, enc) {
  enc = enc || 'utf8';
  if (!Buffer.isBuffer(pub)) {
    pub = new Buffer(pub, enc);
  }
  this._pub = new BN(pub);
  return this;
}

function setPrivateKey(priv, enc) {
  enc = enc || 'utf8';
  if (!Buffer.isBuffer(priv)) {
    priv = new Buffer(priv, enc);
  }
  this._priv = new BN(priv);
  return this;
}

var primeCache = {};
function checkPrime(prime, generator) {
  var gen = generator.toString('hex');
  var hex = [gen, prime.toString(16)].join('_');
  if (hex in primeCache) {
    return primeCache[hex];
  }
  var error = 0;

  if (prime.isEven() ||
    !primes.simpleSieve ||
    !primes.fermatTest(prime) ||
    !millerRabin.test(prime)) {
    //not a prime so +1
    error += 1;

    if (gen === '02' || gen === '05') {
      // we'd be able to check the generator
      // it would fail so +8
      error += 8;
    } else {
      //we wouldn't be able to test the generator
      // so +4
      error += 4;
    }
    primeCache[hex] = error;
    return error;
  }
  if (!millerRabin.test(prime.shrn(1))) {
    //not a safe prime
    error += 2;
  }
  var rem;
  switch (gen) {
    case '02':
      if (prime.mod(TWENTYFOUR).cmp(ELEVEN)) {
        // unsuidable generator
        error += 8;
      }
      break;
    case '05':
      rem = prime.mod(TEN);
      if (rem.cmp(THREE) && rem.cmp(SEVEN)) {
        // prime mod 10 needs to equal 3 or 7
        error += 8;
      }
      break;
    default:
      error += 4;
  }
  primeCache[hex] = error;
  return error;
}

function DH(prime, generator, malleable) {
  this.setGenerator(generator);
  this.__prime = new BN(prime);
  this._prime = BN.mont(this.__prime);
  this._primeLen = prime.length;
  this._pub = undefined;
  this._priv = undefined;
  this._primeCode = undefined;
  if (malleable) {
    this.setPublicKey = setPublicKey;
    this.setPrivateKey = setPrivateKey;
  } else {
    this._primeCode = 8;
  }
}
Object.defineProperty(DH.prototype, 'verifyError', {
  enumerable: true,
  get: function () {
    if (typeof this._primeCode !== 'number') {
      this._primeCode = checkPrime(this.__prime, this.__gen);
    }
    return this._primeCode;
  }
});
DH.prototype.generateKeys = function () {
  if (!this._priv) {
    this._priv = new BN(randomBytes(this._primeLen));
  }
  this._pub = this._gen.toRed(this._prime).redPow(this._priv).fromRed();
  return this.getPublicKey();
};

DH.prototype.computeSecret = function (other) {
  other = new BN(other);
  other = other.toRed(this._prime);
  var secret = other.redPow(this._priv).fromRed();
  var out = new Buffer(secret.toArray());
  var prime = this.getPrime();
  if (out.length < prime.length) {
    var front = new Buffer(prime.length - out.length);
    front.fill(0);
    out = Buffer.concat([front, out]);
  }
  return out;
};

DH.prototype.getPublicKey = function getPublicKey(enc) {
  return formatReturnValue(this._pub, enc);
};

DH.prototype.getPrivateKey = function getPrivateKey(enc) {
  return formatReturnValue(this._priv, enc);
};

DH.prototype.getPrime = function (enc) {
  return formatReturnValue(this.__prime, enc);
};

DH.prototype.getGenerator = function (enc) {
  return formatReturnValue(this._gen, enc);
};

DH.prototype.setGenerator = function (gen, enc) {
  enc = enc || 'utf8';
  if (!Buffer.isBuffer(gen)) {
    gen = new Buffer(gen, enc);
  }
  this.__gen = gen;
  this._gen = new BN(gen);
  return this;
};

function formatReturnValue(bn, enc) {
  var buf = new Buffer(bn.toArray());
  if (!enc) {
    return buf;
  } else {
    return buf.toString(enc);
  }
}

}).call(this,require("buffer").Buffer)
},{"./generatePrime":187,"bn.js":136,"buffer":168,"miller-rabin":286,"randombytes":323}],187:[function(require,module,exports){
var randomBytes = require('randombytes');
module.exports = findPrime;
findPrime.simpleSieve = simpleSieve;
findPrime.fermatTest = fermatTest;
var BN = require('bn.js');
var TWENTYFOUR = new BN(24);
var MillerRabin = require('miller-rabin');
var millerRabin = new MillerRabin();
var ONE = new BN(1);
var TWO = new BN(2);
var FIVE = new BN(5);
var SIXTEEN = new BN(16);
var EIGHT = new BN(8);
var TEN = new BN(10);
var THREE = new BN(3);
var SEVEN = new BN(7);
var ELEVEN = new BN(11);
var FOUR = new BN(4);
var TWELVE = new BN(12);
var primes = null;

function _getPrimes() {
  if (primes !== null)
    return primes;

  var limit = 0x100000;
  var res = [];
  res[0] = 2;
  for (var i = 1, k = 3; k < limit; k += 2) {
    var sqrt = Math.ceil(Math.sqrt(k));
    for (var j = 0; j < i && res[j] <= sqrt; j++)
      if (k % res[j] === 0)
        break;

    if (i !== j && res[j] <= sqrt)
      continue;

    res[i++] = k;
  }
  primes = res;
  return res;
}

function simpleSieve(p) {
  var primes = _getPrimes();

  for (var i = 0; i < primes.length; i++)
    if (p.modn(primes[i]) === 0) {
      if (p.cmpn(primes[i]) === 0) {
        return true;
      } else {
        return false;
      }
    }

  return true;
}

function fermatTest(p) {
  var red = BN.mont(p);
  return TWO.toRed(red).redPow(p.subn(1)).fromRed().cmpn(1) === 0;
}

function findPrime(bits, gen) {
  if (bits < 16) {
    // this is what openssl does
    if (gen === 2 || gen === 5) {
      return new BN([0x8c, 0x7b]);
    } else {
      return new BN([0x8c, 0x27]);
    }
  }
  gen = new BN(gen);

  var num, n2;

  while (true) {
    num = new BN(randomBytes(Math.ceil(bits / 8)));
    while (num.bitLength() > bits) {
      num.ishrn(1);
    }
    if (num.isEven()) {
      num.iadd(ONE);
    }
    if (!num.testn(1)) {
      num.iadd(TWO);
    }
    if (!gen.cmp(TWO)) {
      while (num.mod(TWENTYFOUR).cmp(ELEVEN)) {
        num.iadd(FOUR);
      }
    } else if (!gen.cmp(FIVE)) {
      while (num.mod(TEN).cmp(THREE)) {
        num.iadd(FOUR);
      }
    }
    n2 = num.shrn(1);
    if (simpleSieve(n2) && simpleSieve(num) &&
      fermatTest(n2) && fermatTest(num) &&
      millerRabin.test(n2) && millerRabin.test(num)) {
      return num;
    }
  }

}

},{"bn.js":136,"miller-rabin":286,"randombytes":323}],188:[function(require,module,exports){
module.exports={
    "modp1": {
        "gen": "02",
        "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a63a3620ffffffffffffffff"
    },
    "modp2": {
        "gen": "02",
        "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece65381ffffffffffffffff"
    },
    "modp5": {
        "gen": "02",
        "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece45b3dc2007cb8a163bf0598da48361c55d39a69163fa8fd24cf5f83655d23dca3ad961c62f356208552bb9ed529077096966d670c354e4abc9804f1746c08ca237327ffffffffffffffff"
    },
    "modp14": {
        "gen": "02",
        "prime": "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"
    },
    "modp15": {
        "gen": "02",
        "prime": "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"
    },
    "modp16": {
        "gen": "02",
        "prime": "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"
    },
    "modp17": {
        "gen": "02",
        "prime": "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"
    },
    "modp18": {
        "gen": "02",
        "prime": "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"
    }
}
},{}],189:[function(require,module,exports){
'use strict';

var elliptic = exports;

elliptic.version = require('../package.json').version;
elliptic.utils = require('./elliptic/utils');
elliptic.rand = require('brorand');
elliptic.curve = require('./elliptic/curve');
elliptic.curves = require('./elliptic/curves');

// Protocols
elliptic.ec = require('./elliptic/ec');
elliptic.eddsa = require('./elliptic/eddsa');

},{"../package.json":204,"./elliptic/curve":192,"./elliptic/curves":195,"./elliptic/ec":196,"./elliptic/eddsa":199,"./elliptic/utils":203,"brorand":137}],190:[function(require,module,exports){
'use strict';

var BN = require('bn.js');
var utils = require('../utils');
var getNAF = utils.getNAF;
var getJSF = utils.getJSF;
var assert = utils.assert;

function BaseCurve(type, conf) {
  this.type = type;
  this.p = new BN(conf.p, 16);

  // Use Montgomery, when there is no fast reduction for the prime
  this.red = conf.prime ? BN.red(conf.prime) : BN.mont(this.p);

  // Useful for many curves
  this.zero = new BN(0).toRed(this.red);
  this.one = new BN(1).toRed(this.red);
  this.two = new BN(2).toRed(this.red);

  // Curve configuration, optional
  this.n = conf.n && new BN(conf.n, 16);
  this.g = conf.g && this.pointFromJSON(conf.g, conf.gRed);

  // Temporary arrays
  this._wnafT1 = new Array(4);
  this._wnafT2 = new Array(4);
  this._wnafT3 = new Array(4);
  this._wnafT4 = new Array(4);

  // Generalized Greg Maxwell's trick
  var adjustCount = this.n && this.p.div(this.n);
  if (!adjustCount || adjustCount.cmpn(100) > 0) {
    this.redN = null;
  } else {
    this._maxwellTrick = true;
    this.redN = this.n.toRed(this.red);
  }
}
module.exports = BaseCurve;

BaseCurve.prototype.point = function point() {
  throw new Error('Not implemented');
};

BaseCurve.prototype.validate = function validate() {
  throw new Error('Not implemented');
};

BaseCurve.prototype._fixedNafMul = function _fixedNafMul(p, k) {
  assert(p.precomputed);
  var doubles = p._getDoubles();

  var naf = getNAF(k, 1);
  var I = (1 << (doubles.step + 1)) - (doubles.step % 2 === 0 ? 2 : 1);
  I /= 3;

  // Translate into more windowed form
  var repr = [];
  for (var j = 0; j < naf.length; j += doubles.step) {
    var nafW = 0;
    for (var k = j + doubles.step - 1; k >= j; k--)
      nafW = (nafW << 1) + naf[k];
    repr.push(nafW);
  }

  var a = this.jpoint(null, null, null);
  var b = this.jpoint(null, null, null);
  for (var i = I; i > 0; i--) {
    for (var j = 0; j < repr.length; j++) {
      var nafW = repr[j];
      if (nafW === i)
        b = b.mixedAdd(doubles.points[j]);
      else if (nafW === -i)
        b = b.mixedAdd(doubles.points[j].neg());
    }
    a = a.add(b);
  }
  return a.toP();
};

BaseCurve.prototype._wnafMul = function _wnafMul(p, k) {
  var w = 4;

  // Precompute window
  var nafPoints = p._getNAFPoints(w);
  w = nafPoints.wnd;
  var wnd = nafPoints.points;

  // Get NAF form
  var naf = getNAF(k, w);

  // Add `this`*(N+1) for every w-NAF index
  var acc = this.jpoint(null, null, null);
  for (var i = naf.length - 1; i >= 0; i--) {
    // Count zeroes
    for (var k = 0; i >= 0 && naf[i] === 0; i--)
      k++;
    if (i >= 0)
      k++;
    acc = acc.dblp(k);

    if (i < 0)
      break;
    var z = naf[i];
    assert(z !== 0);
    if (p.type === 'affine') {
      // J +- P
      if (z > 0)
        acc = acc.mixedAdd(wnd[(z - 1) >> 1]);
      else
        acc = acc.mixedAdd(wnd[(-z - 1) >> 1].neg());
    } else {
      // J +- J
      if (z > 0)
        acc = acc.add(wnd[(z - 1) >> 1]);
      else
        acc = acc.add(wnd[(-z - 1) >> 1].neg());
    }
  }
  return p.type === 'affine' ? acc.toP() : acc;
};

BaseCurve.prototype._wnafMulAdd = function _wnafMulAdd(defW,
                                                       points,
                                                       coeffs,
                                                       len,
                                                       jacobianResult) {
  var wndWidth = this._wnafT1;
  var wnd = this._wnafT2;
  var naf = this._wnafT3;

  // Fill all arrays
  var max = 0;
  for (var i = 0; i < len; i++) {
    var p = points[i];
    var nafPoints = p._getNAFPoints(defW);
    wndWidth[i] = nafPoints.wnd;
    wnd[i] = nafPoints.points;
  }

  // Comb small window NAFs
  for (var i = len - 1; i >= 1; i -= 2) {
    var a = i - 1;
    var b = i;
    if (wndWidth[a] !== 1 || wndWidth[b] !== 1) {
      naf[a] = getNAF(coeffs[a], wndWidth[a]);
      naf[b] = getNAF(coeffs[b], wndWidth[b]);
      max = Math.max(naf[a].length, max);
      max = Math.max(naf[b].length, max);
      continue;
    }

    var comb = [
      points[a], /* 1 */
      null, /* 3 */
      null, /* 5 */
      points[b] /* 7 */
    ];

    // Try to avoid Projective points, if possible
    if (points[a].y.cmp(points[b].y) === 0) {
      comb[1] = points[a].add(points[b]);
      comb[2] = points[a].toJ().mixedAdd(points[b].neg());
    } else if (points[a].y.cmp(points[b].y.redNeg()) === 0) {
      comb[1] = points[a].toJ().mixedAdd(points[b]);
      comb[2] = points[a].add(points[b].neg());
    } else {
      comb[1] = points[a].toJ().mixedAdd(points[b]);
      comb[2] = points[a].toJ().mixedAdd(points[b].neg());
    }

    var index = [
      -3, /* -1 -1 */
      -1, /* -1 0 */
      -5, /* -1 1 */
      -7, /* 0 -1 */
      0, /* 0 0 */
      7, /* 0 1 */
      5, /* 1 -1 */
      1, /* 1 0 */
      3  /* 1 1 */
    ];

    var jsf = getJSF(coeffs[a], coeffs[b]);
    max = Math.max(jsf[0].length, max);
    naf[a] = new Array(max);
    naf[b] = new Array(max);
    for (var j = 0; j < max; j++) {
      var ja = jsf[0][j] | 0;
      var jb = jsf[1][j] | 0;

      naf[a][j] = index[(ja + 1) * 3 + (jb + 1)];
      naf[b][j] = 0;
      wnd[a] = comb;
    }
  }

  var acc = this.jpoint(null, null, null);
  var tmp = this._wnafT4;
  for (var i = max; i >= 0; i--) {
    var k = 0;

    while (i >= 0) {
      var zero = true;
      for (var j = 0; j < len; j++) {
        tmp[j] = naf[j][i] | 0;
        if (tmp[j] !== 0)
          zero = false;
      }
      if (!zero)
        break;
      k++;
      i--;
    }
    if (i >= 0)
      k++;
    acc = acc.dblp(k);
    if (i < 0)
      break;

    for (var j = 0; j < len; j++) {
      var z = tmp[j];
      var p;
      if (z === 0)
        continue;
      else if (z > 0)
        p = wnd[j][(z - 1) >> 1];
      else if (z < 0)
        p = wnd[j][(-z - 1) >> 1].neg();

      if (p.type === 'affine')
        acc = acc.mixedAdd(p);
      else
        acc = acc.add(p);
    }
  }
  // Zeroify references
  for (var i = 0; i < len; i++)
    wnd[i] = null;

  if (jacobianResult)
    return acc;
  else
    return acc.toP();
};

function BasePoint(curve, type) {
  this.curve = curve;
  this.type = type;
  this.precomputed = null;
}
BaseCurve.BasePoint = BasePoint;

BasePoint.prototype.eq = function eq(/*other*/) {
  throw new Error('Not implemented');
};

BasePoint.prototype.validate = function validate() {
  return this.curve.validate(this);
};

BaseCurve.prototype.decodePoint = function decodePoint(bytes, enc) {
  bytes = utils.toArray(bytes, enc);

  var len = this.p.byteLength();

  // uncompressed, hybrid-odd, hybrid-even
  if ((bytes[0] === 0x04 || bytes[0] === 0x06 || bytes[0] === 0x07) &&
      bytes.length - 1 === 2 * len) {
    if (bytes[0] === 0x06)
      assert(bytes[bytes.length - 1] % 2 === 0);
    else if (bytes[0] === 0x07)
      assert(bytes[bytes.length - 1] % 2 === 1);

    var res =  this.point(bytes.slice(1, 1 + len),
                          bytes.slice(1 + len, 1 + 2 * len));

    return res;
  } else if ((bytes[0] === 0x02 || bytes[0] === 0x03) &&
              bytes.length - 1 === len) {
    return this.pointFromX(bytes.slice(1, 1 + len), bytes[0] === 0x03);
  }
  throw new Error('Unknown point format');
};

BasePoint.prototype.encodeCompressed = function encodeCompressed(enc) {
  return this.encode(enc, true);
};

BasePoint.prototype._encode = function _encode(compact) {
  var len = this.curve.p.byteLength();
  var x = this.getX().toArray('be', len);

  if (compact)
    return [ this.getY().isEven() ? 0x02 : 0x03 ].concat(x);

  return [ 0x04 ].concat(x, this.getY().toArray('be', len)) ;
};

BasePoint.prototype.encode = function encode(enc, compact) {
  return utils.encode(this._encode(compact), enc);
};

BasePoint.prototype.precompute = function precompute(power) {
  if (this.precomputed)
    return this;

  var precomputed = {
    doubles: null,
    naf: null,
    beta: null
  };
  precomputed.naf = this._getNAFPoints(8);
  precomputed.doubles = this._getDoubles(4, power);
  precomputed.beta = this._getBeta();
  this.precomputed = precomputed;

  return this;
};

BasePoint.prototype._hasDoubles = function _hasDoubles(k) {
  if (!this.precomputed)
    return false;

  var doubles = this.precomputed.doubles;
  if (!doubles)
    return false;

  return doubles.points.length >= Math.ceil((k.bitLength() + 1) / doubles.step);
};

BasePoint.prototype._getDoubles = function _getDoubles(step, power) {
  if (this.precomputed && this.precomputed.doubles)
    return this.precomputed.doubles;

  var doubles = [ this ];
  var acc = this;
  for (var i = 0; i < power; i += step) {
    for (var j = 0; j < step; j++)
      acc = acc.dbl();
    doubles.push(acc);
  }
  return {
    step: step,
    points: doubles
  };
};

BasePoint.prototype._getNAFPoints = function _getNAFPoints(wnd) {
  if (this.precomputed && this.precomputed.naf)
    return this.precomputed.naf;

  var res = [ this ];
  var max = (1 << wnd) - 1;
  var dbl = max === 1 ? null : this.dbl();
  for (var i = 1; i < max; i++)
    res[i] = res[i - 1].add(dbl);
  return {
    wnd: wnd,
    points: res
  };
};

BasePoint.prototype._getBeta = function _getBeta() {
  return null;
};

BasePoint.prototype.dblp = function dblp(k) {
  var r = this;
  for (var i = 0; i < k; i++)
    r = r.dbl();
  return r;
};

},{"../utils":203,"bn.js":136}],191:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var BN = require('bn.js');
var inherits = require('inherits');
var Base = require('./base');

var assert = utils.assert;

function EdwardsCurve(conf) {
  // NOTE: Important as we are creating point in Base.call()
  this.twisted = (conf.a | 0) !== 1;
  this.mOneA = this.twisted && (conf.a | 0) === -1;
  this.extended = this.mOneA;

  Base.call(this, 'edwards', conf);

  this.a = new BN(conf.a, 16).umod(this.red.m);
  this.a = this.a.toRed(this.red);
  this.c = new BN(conf.c, 16).toRed(this.red);
  this.c2 = this.c.redSqr();
  this.d = new BN(conf.d, 16).toRed(this.red);
  this.dd = this.d.redAdd(this.d);

  assert(!this.twisted || this.c.fromRed().cmpn(1) === 0);
  this.oneC = (conf.c | 0) === 1;
}
inherits(EdwardsCurve, Base);
module.exports = EdwardsCurve;

EdwardsCurve.prototype._mulA = function _mulA(num) {
  if (this.mOneA)
    return num.redNeg();
  else
    return this.a.redMul(num);
};

EdwardsCurve.prototype._mulC = function _mulC(num) {
  if (this.oneC)
    return num;
  else
    return this.c.redMul(num);
};

// Just for compatibility with Short curve
EdwardsCurve.prototype.jpoint = function jpoint(x, y, z, t) {
  return this.point(x, y, z, t);
};

EdwardsCurve.prototype.pointFromX = function pointFromX(x, odd) {
  x = new BN(x, 16);
  if (!x.red)
    x = x.toRed(this.red);

  var x2 = x.redSqr();
  var rhs = this.c2.redSub(this.a.redMul(x2));
  var lhs = this.one.redSub(this.c2.redMul(this.d).redMul(x2));

  var y2 = rhs.redMul(lhs.redInvm());
  var y = y2.redSqrt();
  if (y.redSqr().redSub(y2).cmp(this.zero) !== 0)
    throw new Error('invalid point');

  var isOdd = y.fromRed().isOdd();
  if (odd && !isOdd || !odd && isOdd)
    y = y.redNeg();

  return this.point(x, y);
};

EdwardsCurve.prototype.pointFromY = function pointFromY(y, odd) {
  y = new BN(y, 16);
  if (!y.red)
    y = y.toRed(this.red);

  // x^2 = (y^2 - c^2) / (c^2 d y^2 - a)
  var y2 = y.redSqr();
  var lhs = y2.redSub(this.c2);
  var rhs = y2.redMul(this.d).redMul(this.c2).redSub(this.a);
  var x2 = lhs.redMul(rhs.redInvm());

  if (x2.cmp(this.zero) === 0) {
    if (odd)
      throw new Error('invalid point');
    else
      return this.point(this.zero, y);
  }

  var x = x2.redSqrt();
  if (x.redSqr().redSub(x2).cmp(this.zero) !== 0)
    throw new Error('invalid point');

  if (x.fromRed().isOdd() !== odd)
    x = x.redNeg();

  return this.point(x, y);
};

EdwardsCurve.prototype.validate = function validate(point) {
  if (point.isInfinity())
    return true;

  // Curve: A * X^2 + Y^2 = C^2 * (1 + D * X^2 * Y^2)
  point.normalize();

  var x2 = point.x.redSqr();
  var y2 = point.y.redSqr();
  var lhs = x2.redMul(this.a).redAdd(y2);
  var rhs = this.c2.redMul(this.one.redAdd(this.d.redMul(x2).redMul(y2)));

  return lhs.cmp(rhs) === 0;
};

function Point(curve, x, y, z, t) {
  Base.BasePoint.call(this, curve, 'projective');
  if (x === null && y === null && z === null) {
    this.x = this.curve.zero;
    this.y = this.curve.one;
    this.z = this.curve.one;
    this.t = this.curve.zero;
    this.zOne = true;
  } else {
    this.x = new BN(x, 16);
    this.y = new BN(y, 16);
    this.z = z ? new BN(z, 16) : this.curve.one;
    this.t = t && new BN(t, 16);
    if (!this.x.red)
      this.x = this.x.toRed(this.curve.red);
    if (!this.y.red)
      this.y = this.y.toRed(this.curve.red);
    if (!this.z.red)
      this.z = this.z.toRed(this.curve.red);
    if (this.t && !this.t.red)
      this.t = this.t.toRed(this.curve.red);
    this.zOne = this.z === this.curve.one;

    // Use extended coordinates
    if (this.curve.extended && !this.t) {
      this.t = this.x.redMul(this.y);
      if (!this.zOne)
        this.t = this.t.redMul(this.z.redInvm());
    }
  }
}
inherits(Point, Base.BasePoint);

EdwardsCurve.prototype.pointFromJSON = function pointFromJSON(obj) {
  return Point.fromJSON(this, obj);
};

EdwardsCurve.prototype.point = function point(x, y, z, t) {
  return new Point(this, x, y, z, t);
};

Point.fromJSON = function fromJSON(curve, obj) {
  return new Point(curve, obj[0], obj[1], obj[2]);
};

Point.prototype.inspect = function inspect() {
  if (this.isInfinity())
    return '<EC Point Infinity>';
  return '<EC Point x: ' + this.x.fromRed().toString(16, 2) +
      ' y: ' + this.y.fromRed().toString(16, 2) +
      ' z: ' + this.z.fromRed().toString(16, 2) + '>';
};

Point.prototype.isInfinity = function isInfinity() {
  // XXX This code assumes that zero is always zero in red
  return this.x.cmpn(0) === 0 &&
    (this.y.cmp(this.z) === 0 ||
    (this.zOne && this.y.cmp(this.curve.c) === 0));
};

Point.prototype._extDbl = function _extDbl() {
  // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html
  //     #doubling-dbl-2008-hwcd
  // 4M + 4S

  // A = X1^2
  var a = this.x.redSqr();
  // B = Y1^2
  var b = this.y.redSqr();
  // C = 2 * Z1^2
  var c = this.z.redSqr();
  c = c.redIAdd(c);
  // D = a * A
  var d = this.curve._mulA(a);
  // E = (X1 + Y1)^2 - A - B
  var e = this.x.redAdd(this.y).redSqr().redISub(a).redISub(b);
  // G = D + B
  var g = d.redAdd(b);
  // F = G - C
  var f = g.redSub(c);
  // H = D - B
  var h = d.redSub(b);
  // X3 = E * F
  var nx = e.redMul(f);
  // Y3 = G * H
  var ny = g.redMul(h);
  // T3 = E * H
  var nt = e.redMul(h);
  // Z3 = F * G
  var nz = f.redMul(g);
  return this.curve.point(nx, ny, nz, nt);
};

Point.prototype._projDbl = function _projDbl() {
  // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html
  //     #doubling-dbl-2008-bbjlp
  //     #doubling-dbl-2007-bl
  // and others
  // Generally 3M + 4S or 2M + 4S

  // B = (X1 + Y1)^2
  var b = this.x.redAdd(this.y).redSqr();
  // C = X1^2
  var c = this.x.redSqr();
  // D = Y1^2
  var d = this.y.redSqr();

  var nx;
  var ny;
  var nz;
  if (this.curve.twisted) {
    // E = a * C
    var e = this.curve._mulA(c);
    // F = E + D
    var f = e.redAdd(d);
    if (this.zOne) {
      // X3 = (B - C - D) * (F - 2)
      nx = b.redSub(c).redSub(d).redMul(f.redSub(this.curve.two));
      // Y3 = F * (E - D)
      ny = f.redMul(e.redSub(d));
      // Z3 = F^2 - 2 * F
      nz = f.redSqr().redSub(f).redSub(f);
    } else {
      // H = Z1^2
      var h = this.z.redSqr();
      // J = F - 2 * H
      var j = f.redSub(h).redISub(h);
      // X3 = (B-C-D)*J
      nx = b.redSub(c).redISub(d).redMul(j);
      // Y3 = F * (E - D)
      ny = f.redMul(e.redSub(d));
      // Z3 = F * J
      nz = f.redMul(j);
    }
  } else {
    // E = C + D
    var e = c.redAdd(d);
    // H = (c * Z1)^2
    var h = this.curve._mulC(this.z).redSqr();
    // J = E - 2 * H
    var j = e.redSub(h).redSub(h);
    // X3 = c * (B - E) * J
    nx = this.curve._mulC(b.redISub(e)).redMul(j);
    // Y3 = c * E * (C - D)
    ny = this.curve._mulC(e).redMul(c.redISub(d));
    // Z3 = E * J
    nz = e.redMul(j);
  }
  return this.curve.point(nx, ny, nz);
};

Point.prototype.dbl = function dbl() {
  if (this.isInfinity())
    return this;

  // Double in extended coordinates
  if (this.curve.extended)
    return this._extDbl();
  else
    return this._projDbl();
};

Point.prototype._extAdd = function _extAdd(p) {
  // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html
  //     #addition-add-2008-hwcd-3
  // 8M

  // A = (Y1 - X1) * (Y2 - X2)
  var a = this.y.redSub(this.x).redMul(p.y.redSub(p.x));
  // B = (Y1 + X1) * (Y2 + X2)
  var b = this.y.redAdd(this.x).redMul(p.y.redAdd(p.x));
  // C = T1 * k * T2
  var c = this.t.redMul(this.curve.dd).redMul(p.t);
  // D = Z1 * 2 * Z2
  var d = this.z.redMul(p.z.redAdd(p.z));
  // E = B - A
  var e = b.redSub(a);
  // F = D - C
  var f = d.redSub(c);
  // G = D + C
  var g = d.redAdd(c);
  // H = B + A
  var h = b.redAdd(a);
  // X3 = E * F
  var nx = e.redMul(f);
  // Y3 = G * H
  var ny = g.redMul(h);
  // T3 = E * H
  var nt = e.redMul(h);
  // Z3 = F * G
  var nz = f.redMul(g);
  return this.curve.point(nx, ny, nz, nt);
};

Point.prototype._projAdd = function _projAdd(p) {
  // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html
  //     #addition-add-2008-bbjlp
  //     #addition-add-2007-bl
  // 10M + 1S

  // A = Z1 * Z2
  var a = this.z.redMul(p.z);
  // B = A^2
  var b = a.redSqr();
  // C = X1 * X2
  var c = this.x.redMul(p.x);
  // D = Y1 * Y2
  var d = this.y.redMul(p.y);
  // E = d * C * D
  var e = this.curve.d.redMul(c).redMul(d);
  // F = B - E
  var f = b.redSub(e);
  // G = B + E
  var g = b.redAdd(e);
  // X3 = A * F * ((X1 + Y1) * (X2 + Y2) - C - D)
  var tmp = this.x.redAdd(this.y).redMul(p.x.redAdd(p.y)).redISub(c).redISub(d);
  var nx = a.redMul(f).redMul(tmp);
  var ny;
  var nz;
  if (this.curve.twisted) {
    // Y3 = A * G * (D - a * C)
    ny = a.redMul(g).redMul(d.redSub(this.curve._mulA(c)));
    // Z3 = F * G
    nz = f.redMul(g);
  } else {
    // Y3 = A * G * (D - C)
    ny = a.redMul(g).redMul(d.redSub(c));
    // Z3 = c * F * G
    nz = this.curve._mulC(f).redMul(g);
  }
  return this.curve.point(nx, ny, nz);
};

Point.prototype.add = function add(p) {
  if (this.isInfinity())
    return p;
  if (p.isInfinity())
    return this;

  if (this.curve.extended)
    return this._extAdd(p);
  else
    return this._projAdd(p);
};

Point.prototype.mul = function mul(k) {
  if (this._hasDoubles(k))
    return this.curve._fixedNafMul(this, k);
  else
    return this.curve._wnafMul(this, k);
};

Point.prototype.mulAdd = function mulAdd(k1, p, k2) {
  return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2, false);
};

Point.prototype.jmulAdd = function jmulAdd(k1, p, k2) {
  return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2, true);
};

Point.prototype.normalize = function normalize() {
  if (this.zOne)
    return this;

  // Normalize coordinates
  var zi = this.z.redInvm();
  this.x = this.x.redMul(zi);
  this.y = this.y.redMul(zi);
  if (this.t)
    this.t = this.t.redMul(zi);
  this.z = this.curve.one;
  this.zOne = true;
  return this;
};

Point.prototype.neg = function neg() {
  return this.curve.point(this.x.redNeg(),
                          this.y,
                          this.z,
                          this.t && this.t.redNeg());
};

Point.prototype.getX = function getX() {
  this.normalize();
  return this.x.fromRed();
};

Point.prototype.getY = function getY() {
  this.normalize();
  return this.y.fromRed();
};

Point.prototype.eq = function eq(other) {
  return this === other ||
         this.getX().cmp(other.getX()) === 0 &&
         this.getY().cmp(other.getY()) === 0;
};

Point.prototype.eqXToP = function eqXToP(x) {
  var rx = x.toRed(this.curve.red).redMul(this.z);
  if (this.x.cmp(rx) === 0)
    return true;

  var xc = x.clone();
  var t = this.curve.redN.redMul(this.z);
  for (;;) {
    xc.iadd(this.curve.n);
    if (xc.cmp(this.curve.p) >= 0)
      return false;

    rx.redIAdd(t);
    if (this.x.cmp(rx) === 0)
      return true;
  }
};

// Compatibility with BaseCurve
Point.prototype.toP = Point.prototype.normalize;
Point.prototype.mixedAdd = Point.prototype.add;

},{"../utils":203,"./base":190,"bn.js":136,"inherits":245}],192:[function(require,module,exports){
'use strict';

var curve = exports;

curve.base = require('./base');
curve.short = require('./short');
curve.mont = require('./mont');
curve.edwards = require('./edwards');

},{"./base":190,"./edwards":191,"./mont":193,"./short":194}],193:[function(require,module,exports){
'use strict';

var BN = require('bn.js');
var inherits = require('inherits');
var Base = require('./base');

var utils = require('../utils');

function MontCurve(conf) {
  Base.call(this, 'mont', conf);

  this.a = new BN(conf.a, 16).toRed(this.red);
  this.b = new BN(conf.b, 16).toRed(this.red);
  this.i4 = new BN(4).toRed(this.red).redInvm();
  this.two = new BN(2).toRed(this.red);
  this.a24 = this.i4.redMul(this.a.redAdd(this.two));
}
inherits(MontCurve, Base);
module.exports = MontCurve;

MontCurve.prototype.validate = function validate(point) {
  var x = point.normalize().x;
  var x2 = x.redSqr();
  var rhs = x2.redMul(x).redAdd(x2.redMul(this.a)).redAdd(x);
  var y = rhs.redSqrt();

  return y.redSqr().cmp(rhs) === 0;
};

function Point(curve, x, z) {
  Base.BasePoint.call(this, curve, 'projective');
  if (x === null && z === null) {
    this.x = this.curve.one;
    this.z = this.curve.zero;
  } else {
    this.x = new BN(x, 16);
    this.z = new BN(z, 16);
    if (!this.x.red)
      this.x = this.x.toRed(this.curve.red);
    if (!this.z.red)
      this.z = this.z.toRed(this.curve.red);
  }
}
inherits(Point, Base.BasePoint);

MontCurve.prototype.decodePoint = function decodePoint(bytes, enc) {
  return this.point(utils.toArray(bytes, enc), 1);
};

MontCurve.prototype.point = function point(x, z) {
  return new Point(this, x, z);
};

MontCurve.prototype.pointFromJSON = function pointFromJSON(obj) {
  return Point.fromJSON(this, obj);
};

Point.prototype.precompute = function precompute() {
  // No-op
};

Point.prototype._encode = function _encode() {
  return this.getX().toArray('be', this.curve.p.byteLength());
};

Point.fromJSON = function fromJSON(curve, obj) {
  return new Point(curve, obj[0], obj[1] || curve.one);
};

Point.prototype.inspect = function inspect() {
  if (this.isInfinity())
    return '<EC Point Infinity>';
  return '<EC Point x: ' + this.x.fromRed().toString(16, 2) +
      ' z: ' + this.z.fromRed().toString(16, 2) + '>';
};

Point.prototype.isInfinity = function isInfinity() {
  // XXX This code assumes that zero is always zero in red
  return this.z.cmpn(0) === 0;
};

Point.prototype.dbl = function dbl() {
  // http://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html#doubling-dbl-1987-m-3
  // 2M + 2S + 4A

  // A = X1 + Z1
  var a = this.x.redAdd(this.z);
  // AA = A^2
  var aa = a.redSqr();
  // B = X1 - Z1
  var b = this.x.redSub(this.z);
  // BB = B^2
  var bb = b.redSqr();
  // C = AA - BB
  var c = aa.redSub(bb);
  // X3 = AA * BB
  var nx = aa.redMul(bb);
  // Z3 = C * (BB + A24 * C)
  var nz = c.redMul(bb.redAdd(this.curve.a24.redMul(c)));
  return this.curve.point(nx, nz);
};

Point.prototype.add = function add() {
  throw new Error('Not supported on Montgomery curve');
};

Point.prototype.diffAdd = function diffAdd(p, diff) {
  // http://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html#diffadd-dadd-1987-m-3
  // 4M + 2S + 6A

  // A = X2 + Z2
  var a = this.x.redAdd(this.z);
  // B = X2 - Z2
  var b = this.x.redSub(this.z);
  // C = X3 + Z3
  var c = p.x.redAdd(p.z);
  // D = X3 - Z3
  var d = p.x.redSub(p.z);
  // DA = D * A
  var da = d.redMul(a);
  // CB = C * B
  var cb = c.redMul(b);
  // X5 = Z1 * (DA + CB)^2
  var nx = diff.z.redMul(da.redAdd(cb).redSqr());
  // Z5 = X1 * (DA - CB)^2
  var nz = diff.x.redMul(da.redISub(cb).redSqr());
  return this.curve.point(nx, nz);
};

Point.prototype.mul = function mul(k) {
  var t = k.clone();
  var a = this; // (N / 2) * Q + Q
  var b = this.curve.point(null, null); // (N / 2) * Q
  var c = this; // Q

  for (var bits = []; t.cmpn(0) !== 0; t.iushrn(1))
    bits.push(t.andln(1));

  for (var i = bits.length - 1; i >= 0; i--) {
    if (bits[i] === 0) {
      // N * Q + Q = ((N / 2) * Q + Q)) + (N / 2) * Q
      a = a.diffAdd(b, c);
      // N * Q = 2 * ((N / 2) * Q + Q))
      b = b.dbl();
    } else {
      // N * Q = ((N / 2) * Q + Q) + ((N / 2) * Q)
      b = a.diffAdd(b, c);
      // N * Q + Q = 2 * ((N / 2) * Q + Q)
      a = a.dbl();
    }
  }
  return b;
};

Point.prototype.mulAdd = function mulAdd() {
  throw new Error('Not supported on Montgomery curve');
};

Point.prototype.jumlAdd = function jumlAdd() {
  throw new Error('Not supported on Montgomery curve');
};

Point.prototype.eq = function eq(other) {
  return this.getX().cmp(other.getX()) === 0;
};

Point.prototype.normalize = function normalize() {
  this.x = this.x.redMul(this.z.redInvm());
  this.z = this.curve.one;
  return this;
};

Point.prototype.getX = function getX() {
  // Normalize coordinates
  this.normalize();

  return this.x.fromRed();
};

},{"../utils":203,"./base":190,"bn.js":136,"inherits":245}],194:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var BN = require('bn.js');
var inherits = require('inherits');
var Base = require('./base');

var assert = utils.assert;

function ShortCurve(conf) {
  Base.call(this, 'short', conf);

  this.a = new BN(conf.a, 16).toRed(this.red);
  this.b = new BN(conf.b, 16).toRed(this.red);
  this.tinv = this.two.redInvm();

  this.zeroA = this.a.fromRed().cmpn(0) === 0;
  this.threeA = this.a.fromRed().sub(this.p).cmpn(-3) === 0;

  // If the curve is endomorphic, precalculate beta and lambda
  this.endo = this._getEndomorphism(conf);
  this._endoWnafT1 = new Array(4);
  this._endoWnafT2 = new Array(4);
}
inherits(ShortCurve, Base);
module.exports = ShortCurve;

ShortCurve.prototype._getEndomorphism = function _getEndomorphism(conf) {
  // No efficient endomorphism
  if (!this.zeroA || !this.g || !this.n || this.p.modn(3) !== 1)
    return;

  // Compute beta and lambda, that lambda * P = (beta * Px; Py)
  var beta;
  var lambda;
  if (conf.beta) {
    beta = new BN(conf.beta, 16).toRed(this.red);
  } else {
    var betas = this._getEndoRoots(this.p);
    // Choose the smallest beta
    beta = betas[0].cmp(betas[1]) < 0 ? betas[0] : betas[1];
    beta = beta.toRed(this.red);
  }
  if (conf.lambda) {
    lambda = new BN(conf.lambda, 16);
  } else {
    // Choose the lambda that is matching selected beta
    var lambdas = this._getEndoRoots(this.n);
    if (this.g.mul(lambdas[0]).x.cmp(this.g.x.redMul(beta)) === 0) {
      lambda = lambdas[0];
    } else {
      lambda = lambdas[1];
      assert(this.g.mul(lambda).x.cmp(this.g.x.redMul(beta)) === 0);
    }
  }

  // Get basis vectors, used for balanced length-two representation
  var basis;
  if (conf.basis) {
    basis = conf.basis.map(function(vec) {
      return {
        a: new BN(vec.a, 16),
        b: new BN(vec.b, 16)
      };
    });
  } else {
    basis = this._getEndoBasis(lambda);
  }

  return {
    beta: beta,
    lambda: lambda,
    basis: basis
  };
};

ShortCurve.prototype._getEndoRoots = function _getEndoRoots(num) {
  // Find roots of for x^2 + x + 1 in F
  // Root = (-1 +- Sqrt(-3)) / 2
  //
  var red = num === this.p ? this.red : BN.mont(num);
  var tinv = new BN(2).toRed(red).redInvm();
  var ntinv = tinv.redNeg();

  var s = new BN(3).toRed(red).redNeg().redSqrt().redMul(tinv);

  var l1 = ntinv.redAdd(s).fromRed();
  var l2 = ntinv.redSub(s).fromRed();
  return [ l1, l2 ];
};

ShortCurve.prototype._getEndoBasis = function _getEndoBasis(lambda) {
  // aprxSqrt >= sqrt(this.n)
  var aprxSqrt = this.n.ushrn(Math.floor(this.n.bitLength() / 2));

  // 3.74
  // Run EGCD, until r(L + 1) < aprxSqrt
  var u = lambda;
  var v = this.n.clone();
  var x1 = new BN(1);
  var y1 = new BN(0);
  var x2 = new BN(0);
  var y2 = new BN(1);

  // NOTE: all vectors are roots of: a + b * lambda = 0 (mod n)
  var a0;
  var b0;
  // First vector
  var a1;
  var b1;
  // Second vector
  var a2;
  var b2;

  var prevR;
  var i = 0;
  var r;
  var x;
  while (u.cmpn(0) !== 0) {
    var q = v.div(u);
    r = v.sub(q.mul(u));
    x = x2.sub(q.mul(x1));
    var y = y2.sub(q.mul(y1));

    if (!a1 && r.cmp(aprxSqrt) < 0) {
      a0 = prevR.neg();
      b0 = x1;
      a1 = r.neg();
      b1 = x;
    } else if (a1 && ++i === 2) {
      break;
    }
    prevR = r;

    v = u;
    u = r;
    x2 = x1;
    x1 = x;
    y2 = y1;
    y1 = y;
  }
  a2 = r.neg();
  b2 = x;

  var len1 = a1.sqr().add(b1.sqr());
  var len2 = a2.sqr().add(b2.sqr());
  if (len2.cmp(len1) >= 0) {
    a2 = a0;
    b2 = b0;
  }

  // Normalize signs
  if (a1.negative) {
    a1 = a1.neg();
    b1 = b1.neg();
  }
  if (a2.negative) {
    a2 = a2.neg();
    b2 = b2.neg();
  }

  return [
    { a: a1, b: b1 },
    { a: a2, b: b2 }
  ];
};

ShortCurve.prototype._endoSplit = function _endoSplit(k) {
  var basis = this.endo.basis;
  var v1 = basis[0];
  var v2 = basis[1];

  var c1 = v2.b.mul(k).divRound(this.n);
  var c2 = v1.b.neg().mul(k).divRound(this.n);

  var p1 = c1.mul(v1.a);
  var p2 = c2.mul(v2.a);
  var q1 = c1.mul(v1.b);
  var q2 = c2.mul(v2.b);

  // Calculate answer
  var k1 = k.sub(p1).sub(p2);
  var k2 = q1.add(q2).neg();
  return { k1: k1, k2: k2 };
};

ShortCurve.prototype.pointFromX = function pointFromX(x, odd) {
  x = new BN(x, 16);
  if (!x.red)
    x = x.toRed(this.red);

  var y2 = x.redSqr().redMul(x).redIAdd(x.redMul(this.a)).redIAdd(this.b);
  var y = y2.redSqrt();
  if (y.redSqr().redSub(y2).cmp(this.zero) !== 0)
    throw new Error('invalid point');

  // XXX Is there any way to tell if the number is odd without converting it
  // to non-red form?
  var isOdd = y.fromRed().isOdd();
  if (odd && !isOdd || !odd && isOdd)
    y = y.redNeg();

  return this.point(x, y);
};

ShortCurve.prototype.validate = function validate(point) {
  if (point.inf)
    return true;

  var x = point.x;
  var y = point.y;

  var ax = this.a.redMul(x);
  var rhs = x.redSqr().redMul(x).redIAdd(ax).redIAdd(this.b);
  return y.redSqr().redISub(rhs).cmpn(0) === 0;
};

ShortCurve.prototype._endoWnafMulAdd =
    function _endoWnafMulAdd(points, coeffs, jacobianResult) {
  var npoints = this._endoWnafT1;
  var ncoeffs = this._endoWnafT2;
  for (var i = 0; i < points.length; i++) {
    var split = this._endoSplit(coeffs[i]);
    var p = points[i];
    var beta = p._getBeta();

    if (split.k1.negative) {
      split.k1.ineg();
      p = p.neg(true);
    }
    if (split.k2.negative) {
      split.k2.ineg();
      beta = beta.neg(true);
    }

    npoints[i * 2] = p;
    npoints[i * 2 + 1] = beta;
    ncoeffs[i * 2] = split.k1;
    ncoeffs[i * 2 + 1] = split.k2;
  }
  var res = this._wnafMulAdd(1, npoints, ncoeffs, i * 2, jacobianResult);

  // Clean-up references to points and coefficients
  for (var j = 0; j < i * 2; j++) {
    npoints[j] = null;
    ncoeffs[j] = null;
  }
  return res;
};

function Point(curve, x, y, isRed) {
  Base.BasePoint.call(this, curve, 'affine');
  if (x === null && y === null) {
    this.x = null;
    this.y = null;
    this.inf = true;
  } else {
    this.x = new BN(x, 16);
    this.y = new BN(y, 16);
    // Force redgomery representation when loading from JSON
    if (isRed) {
      this.x.forceRed(this.curve.red);
      this.y.forceRed(this.curve.red);
    }
    if (!this.x.red)
      this.x = this.x.toRed(this.curve.red);
    if (!this.y.red)
      this.y = this.y.toRed(this.curve.red);
    this.inf = false;
  }
}
inherits(Point, Base.BasePoint);

ShortCurve.prototype.point = function point(x, y, isRed) {
  return new Point(this, x, y, isRed);
};

ShortCurve.prototype.pointFromJSON = function pointFromJSON(obj, red) {
  return Point.fromJSON(this, obj, red);
};

Point.prototype._getBeta = function _getBeta() {
  if (!this.curve.endo)
    return;

  var pre = this.precomputed;
  if (pre && pre.beta)
    return pre.beta;

  var beta = this.curve.point(this.x.redMul(this.curve.endo.beta), this.y);
  if (pre) {
    var curve = this.curve;
    var endoMul = function(p) {
      return curve.point(p.x.redMul(curve.endo.beta), p.y);
    };
    pre.beta = beta;
    beta.precomputed = {
      beta: null,
      naf: pre.naf && {
        wnd: pre.naf.wnd,
        points: pre.naf.points.map(endoMul)
      },
      doubles: pre.doubles && {
        step: pre.doubles.step,
        points: pre.doubles.points.map(endoMul)
      }
    };
  }
  return beta;
};

Point.prototype.toJSON = function toJSON() {
  if (!this.precomputed)
    return [ this.x, this.y ];

  return [ this.x, this.y, this.precomputed && {
    doubles: this.precomputed.doubles && {
      step: this.precomputed.doubles.step,
      points: this.precomputed.doubles.points.slice(1)
    },
    naf: this.precomputed.naf && {
      wnd: this.precomputed.naf.wnd,
      points: this.precomputed.naf.points.slice(1)
    }
  } ];
};

Point.fromJSON = function fromJSON(curve, obj, red) {
  if (typeof obj === 'string')
    obj = JSON.parse(obj);
  var res = curve.point(obj[0], obj[1], red);
  if (!obj[2])
    return res;

  function obj2point(obj) {
    return curve.point(obj[0], obj[1], red);
  }

  var pre = obj[2];
  res.precomputed = {
    beta: null,
    doubles: pre.doubles && {
      step: pre.doubles.step,
      points: [ res ].concat(pre.doubles.points.map(obj2point))
    },
    naf: pre.naf && {
      wnd: pre.naf.wnd,
      points: [ res ].concat(pre.naf.points.map(obj2point))
    }
  };
  return res;
};

Point.prototype.inspect = function inspect() {
  if (this.isInfinity())
    return '<EC Point Infinity>';
  return '<EC Point x: ' + this.x.fromRed().toString(16, 2) +
      ' y: ' + this.y.fromRed().toString(16, 2) + '>';
};

Point.prototype.isInfinity = function isInfinity() {
  return this.inf;
};

Point.prototype.add = function add(p) {
  // O + P = P
  if (this.inf)
    return p;

  // P + O = P
  if (p.inf)
    return this;

  // P + P = 2P
  if (this.eq(p))
    return this.dbl();

  // P + (-P) = O
  if (this.neg().eq(p))
    return this.curve.point(null, null);

  // P + Q = O
  if (this.x.cmp(p.x) === 0)
    return this.curve.point(null, null);

  var c = this.y.redSub(p.y);
  if (c.cmpn(0) !== 0)
    c = c.redMul(this.x.redSub(p.x).redInvm());
  var nx = c.redSqr().redISub(this.x).redISub(p.x);
  var ny = c.redMul(this.x.redSub(nx)).redISub(this.y);
  return this.curve.point(nx, ny);
};

Point.prototype.dbl = function dbl() {
  if (this.inf)
    return this;

  // 2P = O
  var ys1 = this.y.redAdd(this.y);
  if (ys1.cmpn(0) === 0)
    return this.curve.point(null, null);

  var a = this.curve.a;

  var x2 = this.x.redSqr();
  var dyinv = ys1.redInvm();
  var c = x2.redAdd(x2).redIAdd(x2).redIAdd(a).redMul(dyinv);

  var nx = c.redSqr().redISub(this.x.redAdd(this.x));
  var ny = c.redMul(this.x.redSub(nx)).redISub(this.y);
  return this.curve.point(nx, ny);
};

Point.prototype.getX = function getX() {
  return this.x.fromRed();
};

Point.prototype.getY = function getY() {
  return this.y.fromRed();
};

Point.prototype.mul = function mul(k) {
  k = new BN(k, 16);
  if (this.isInfinity())
    return this;
  else if (this._hasDoubles(k))
    return this.curve._fixedNafMul(this, k);
  else if (this.curve.endo)
    return this.curve._endoWnafMulAdd([ this ], [ k ]);
  else
    return this.curve._wnafMul(this, k);
};

Point.prototype.mulAdd = function mulAdd(k1, p2, k2) {
  var points = [ this, p2 ];
  var coeffs = [ k1, k2 ];
  if (this.curve.endo)
    return this.curve._endoWnafMulAdd(points, coeffs);
  else
    return this.curve._wnafMulAdd(1, points, coeffs, 2);
};

Point.prototype.jmulAdd = function jmulAdd(k1, p2, k2) {
  var points = [ this, p2 ];
  var coeffs = [ k1, k2 ];
  if (this.curve.endo)
    return this.curve._endoWnafMulAdd(points, coeffs, true);
  else
    return this.curve._wnafMulAdd(1, points, coeffs, 2, true);
};

Point.prototype.eq = function eq(p) {
  return this === p ||
         this.inf === p.inf &&
             (this.inf || this.x.cmp(p.x) === 0 && this.y.cmp(p.y) === 0);
};

Point.prototype.neg = function neg(_precompute) {
  if (this.inf)
    return this;

  var res = this.curve.point(this.x, this.y.redNeg());
  if (_precompute && this.precomputed) {
    var pre = this.precomputed;
    var negate = function(p) {
      return p.neg();
    };
    res.precomputed = {
      naf: pre.naf && {
        wnd: pre.naf.wnd,
        points: pre.naf.points.map(negate)
      },
      doubles: pre.doubles && {
        step: pre.doubles.step,
        points: pre.doubles.points.map(negate)
      }
    };
  }
  return res;
};

Point.prototype.toJ = function toJ() {
  if (this.inf)
    return this.curve.jpoint(null, null, null);

  var res = this.curve.jpoint(this.x, this.y, this.curve.one);
  return res;
};

function JPoint(curve, x, y, z) {
  Base.BasePoint.call(this, curve, 'jacobian');
  if (x === null && y === null && z === null) {
    this.x = this.curve.one;
    this.y = this.curve.one;
    this.z = new BN(0);
  } else {
    this.x = new BN(x, 16);
    this.y = new BN(y, 16);
    this.z = new BN(z, 16);
  }
  if (!this.x.red)
    this.x = this.x.toRed(this.curve.red);
  if (!this.y.red)
    this.y = this.y.toRed(this.curve.red);
  if (!this.z.red)
    this.z = this.z.toRed(this.curve.red);

  this.zOne = this.z === this.curve.one;
}
inherits(JPoint, Base.BasePoint);

ShortCurve.prototype.jpoint = function jpoint(x, y, z) {
  return new JPoint(this, x, y, z);
};

JPoint.prototype.toP = function toP() {
  if (this.isInfinity())
    return this.curve.point(null, null);

  var zinv = this.z.redInvm();
  var zinv2 = zinv.redSqr();
  var ax = this.x.redMul(zinv2);
  var ay = this.y.redMul(zinv2).redMul(zinv);

  return this.curve.point(ax, ay);
};

JPoint.prototype.neg = function neg() {
  return this.curve.jpoint(this.x, this.y.redNeg(), this.z);
};

JPoint.prototype.add = function add(p) {
  // O + P = P
  if (this.isInfinity())
    return p;

  // P + O = P
  if (p.isInfinity())
    return this;

  // 12M + 4S + 7A
  var pz2 = p.z.redSqr();
  var z2 = this.z.redSqr();
  var u1 = this.x.redMul(pz2);
  var u2 = p.x.redMul(z2);
  var s1 = this.y.redMul(pz2.redMul(p.z));
  var s2 = p.y.redMul(z2.redMul(this.z));

  var h = u1.redSub(u2);
  var r = s1.redSub(s2);
  if (h.cmpn(0) === 0) {
    if (r.cmpn(0) !== 0)
      return this.curve.jpoint(null, null, null);
    else
      return this.dbl();
  }

  var h2 = h.redSqr();
  var h3 = h2.redMul(h);
  var v = u1.redMul(h2);

  var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v);
  var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3));
  var nz = this.z.redMul(p.z).redMul(h);

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype.mixedAdd = function mixedAdd(p) {
  // O + P = P
  if (this.isInfinity())
    return p.toJ();

  // P + O = P
  if (p.isInfinity())
    return this;

  // 8M + 3S + 7A
  var z2 = this.z.redSqr();
  var u1 = this.x;
  var u2 = p.x.redMul(z2);
  var s1 = this.y;
  var s2 = p.y.redMul(z2).redMul(this.z);

  var h = u1.redSub(u2);
  var r = s1.redSub(s2);
  if (h.cmpn(0) === 0) {
    if (r.cmpn(0) !== 0)
      return this.curve.jpoint(null, null, null);
    else
      return this.dbl();
  }

  var h2 = h.redSqr();
  var h3 = h2.redMul(h);
  var v = u1.redMul(h2);

  var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v);
  var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3));
  var nz = this.z.redMul(h);

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype.dblp = function dblp(pow) {
  if (pow === 0)
    return this;
  if (this.isInfinity())
    return this;
  if (!pow)
    return this.dbl();

  if (this.curve.zeroA || this.curve.threeA) {
    var r = this;
    for (var i = 0; i < pow; i++)
      r = r.dbl();
    return r;
  }

  // 1M + 2S + 1A + N * (4S + 5M + 8A)
  // N = 1 => 6M + 6S + 9A
  var a = this.curve.a;
  var tinv = this.curve.tinv;

  var jx = this.x;
  var jy = this.y;
  var jz = this.z;
  var jz4 = jz.redSqr().redSqr();

  // Reuse results
  var jyd = jy.redAdd(jy);
  for (var i = 0; i < pow; i++) {
    var jx2 = jx.redSqr();
    var jyd2 = jyd.redSqr();
    var jyd4 = jyd2.redSqr();
    var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4));

    var t1 = jx.redMul(jyd2);
    var nx = c.redSqr().redISub(t1.redAdd(t1));
    var t2 = t1.redISub(nx);
    var dny = c.redMul(t2);
    dny = dny.redIAdd(dny).redISub(jyd4);
    var nz = jyd.redMul(jz);
    if (i + 1 < pow)
      jz4 = jz4.redMul(jyd4);

    jx = nx;
    jz = nz;
    jyd = dny;
  }

  return this.curve.jpoint(jx, jyd.redMul(tinv), jz);
};

JPoint.prototype.dbl = function dbl() {
  if (this.isInfinity())
    return this;

  if (this.curve.zeroA)
    return this._zeroDbl();
  else if (this.curve.threeA)
    return this._threeDbl();
  else
    return this._dbl();
};

JPoint.prototype._zeroDbl = function _zeroDbl() {
  var nx;
  var ny;
  var nz;
  // Z = 1
  if (this.zOne) {
    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html
    //     #doubling-mdbl-2007-bl
    // 1M + 5S + 14A

    // XX = X1^2
    var xx = this.x.redSqr();
    // YY = Y1^2
    var yy = this.y.redSqr();
    // YYYY = YY^2
    var yyyy = yy.redSqr();
    // S = 2 * ((X1 + YY)^2 - XX - YYYY)
    var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy);
    s = s.redIAdd(s);
    // M = 3 * XX + a; a = 0
    var m = xx.redAdd(xx).redIAdd(xx);
    // T = M ^ 2 - 2*S
    var t = m.redSqr().redISub(s).redISub(s);

    // 8 * YYYY
    var yyyy8 = yyyy.redIAdd(yyyy);
    yyyy8 = yyyy8.redIAdd(yyyy8);
    yyyy8 = yyyy8.redIAdd(yyyy8);

    // X3 = T
    nx = t;
    // Y3 = M * (S - T) - 8 * YYYY
    ny = m.redMul(s.redISub(t)).redISub(yyyy8);
    // Z3 = 2*Y1
    nz = this.y.redAdd(this.y);
  } else {
    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html
    //     #doubling-dbl-2009-l
    // 2M + 5S + 13A

    // A = X1^2
    var a = this.x.redSqr();
    // B = Y1^2
    var b = this.y.redSqr();
    // C = B^2
    var c = b.redSqr();
    // D = 2 * ((X1 + B)^2 - A - C)
    var d = this.x.redAdd(b).redSqr().redISub(a).redISub(c);
    d = d.redIAdd(d);
    // E = 3 * A
    var e = a.redAdd(a).redIAdd(a);
    // F = E^2
    var f = e.redSqr();

    // 8 * C
    var c8 = c.redIAdd(c);
    c8 = c8.redIAdd(c8);
    c8 = c8.redIAdd(c8);

    // X3 = F - 2 * D
    nx = f.redISub(d).redISub(d);
    // Y3 = E * (D - X3) - 8 * C
    ny = e.redMul(d.redISub(nx)).redISub(c8);
    // Z3 = 2 * Y1 * Z1
    nz = this.y.redMul(this.z);
    nz = nz.redIAdd(nz);
  }

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype._threeDbl = function _threeDbl() {
  var nx;
  var ny;
  var nz;
  // Z = 1
  if (this.zOne) {
    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html
    //     #doubling-mdbl-2007-bl
    // 1M + 5S + 15A

    // XX = X1^2
    var xx = this.x.redSqr();
    // YY = Y1^2
    var yy = this.y.redSqr();
    // YYYY = YY^2
    var yyyy = yy.redSqr();
    // S = 2 * ((X1 + YY)^2 - XX - YYYY)
    var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy);
    s = s.redIAdd(s);
    // M = 3 * XX + a
    var m = xx.redAdd(xx).redIAdd(xx).redIAdd(this.curve.a);
    // T = M^2 - 2 * S
    var t = m.redSqr().redISub(s).redISub(s);
    // X3 = T
    nx = t;
    // Y3 = M * (S - T) - 8 * YYYY
    var yyyy8 = yyyy.redIAdd(yyyy);
    yyyy8 = yyyy8.redIAdd(yyyy8);
    yyyy8 = yyyy8.redIAdd(yyyy8);
    ny = m.redMul(s.redISub(t)).redISub(yyyy8);
    // Z3 = 2 * Y1
    nz = this.y.redAdd(this.y);
  } else {
    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html#doubling-dbl-2001-b
    // 3M + 5S

    // delta = Z1^2
    var delta = this.z.redSqr();
    // gamma = Y1^2
    var gamma = this.y.redSqr();
    // beta = X1 * gamma
    var beta = this.x.redMul(gamma);
    // alpha = 3 * (X1 - delta) * (X1 + delta)
    var alpha = this.x.redSub(delta).redMul(this.x.redAdd(delta));
    alpha = alpha.redAdd(alpha).redIAdd(alpha);
    // X3 = alpha^2 - 8 * beta
    var beta4 = beta.redIAdd(beta);
    beta4 = beta4.redIAdd(beta4);
    var beta8 = beta4.redAdd(beta4);
    nx = alpha.redSqr().redISub(beta8);
    // Z3 = (Y1 + Z1)^2 - gamma - delta
    nz = this.y.redAdd(this.z).redSqr().redISub(gamma).redISub(delta);
    // Y3 = alpha * (4 * beta - X3) - 8 * gamma^2
    var ggamma8 = gamma.redSqr();
    ggamma8 = ggamma8.redIAdd(ggamma8);
    ggamma8 = ggamma8.redIAdd(ggamma8);
    ggamma8 = ggamma8.redIAdd(ggamma8);
    ny = alpha.redMul(beta4.redISub(nx)).redISub(ggamma8);
  }

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype._dbl = function _dbl() {
  var a = this.curve.a;

  // 4M + 6S + 10A
  var jx = this.x;
  var jy = this.y;
  var jz = this.z;
  var jz4 = jz.redSqr().redSqr();

  var jx2 = jx.redSqr();
  var jy2 = jy.redSqr();

  var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4));

  var jxd4 = jx.redAdd(jx);
  jxd4 = jxd4.redIAdd(jxd4);
  var t1 = jxd4.redMul(jy2);
  var nx = c.redSqr().redISub(t1.redAdd(t1));
  var t2 = t1.redISub(nx);

  var jyd8 = jy2.redSqr();
  jyd8 = jyd8.redIAdd(jyd8);
  jyd8 = jyd8.redIAdd(jyd8);
  jyd8 = jyd8.redIAdd(jyd8);
  var ny = c.redMul(t2).redISub(jyd8);
  var nz = jy.redAdd(jy).redMul(jz);

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype.trpl = function trpl() {
  if (!this.curve.zeroA)
    return this.dbl().add(this);

  // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#tripling-tpl-2007-bl
  // 5M + 10S + ...

  // XX = X1^2
  var xx = this.x.redSqr();
  // YY = Y1^2
  var yy = this.y.redSqr();
  // ZZ = Z1^2
  var zz = this.z.redSqr();
  // YYYY = YY^2
  var yyyy = yy.redSqr();
  // M = 3 * XX + a * ZZ2; a = 0
  var m = xx.redAdd(xx).redIAdd(xx);
  // MM = M^2
  var mm = m.redSqr();
  // E = 6 * ((X1 + YY)^2 - XX - YYYY) - MM
  var e = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy);
  e = e.redIAdd(e);
  e = e.redAdd(e).redIAdd(e);
  e = e.redISub(mm);
  // EE = E^2
  var ee = e.redSqr();
  // T = 16*YYYY
  var t = yyyy.redIAdd(yyyy);
  t = t.redIAdd(t);
  t = t.redIAdd(t);
  t = t.redIAdd(t);
  // U = (M + E)^2 - MM - EE - T
  var u = m.redIAdd(e).redSqr().redISub(mm).redISub(ee).redISub(t);
  // X3 = 4 * (X1 * EE - 4 * YY * U)
  var yyu4 = yy.redMul(u);
  yyu4 = yyu4.redIAdd(yyu4);
  yyu4 = yyu4.redIAdd(yyu4);
  var nx = this.x.redMul(ee).redISub(yyu4);
  nx = nx.redIAdd(nx);
  nx = nx.redIAdd(nx);
  // Y3 = 8 * Y1 * (U * (T - U) - E * EE)
  var ny = this.y.redMul(u.redMul(t.redISub(u)).redISub(e.redMul(ee)));
  ny = ny.redIAdd(ny);
  ny = ny.redIAdd(ny);
  ny = ny.redIAdd(ny);
  // Z3 = (Z1 + E)^2 - ZZ - EE
  var nz = this.z.redAdd(e).redSqr().redISub(zz).redISub(ee);

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype.mul = function mul(k, kbase) {
  k = new BN(k, kbase);

  return this.curve._wnafMul(this, k);
};

JPoint.prototype.eq = function eq(p) {
  if (p.type === 'affine')
    return this.eq(p.toJ());

  if (this === p)
    return true;

  // x1 * z2^2 == x2 * z1^2
  var z2 = this.z.redSqr();
  var pz2 = p.z.redSqr();
  if (this.x.redMul(pz2).redISub(p.x.redMul(z2)).cmpn(0) !== 0)
    return false;

  // y1 * z2^3 == y2 * z1^3
  var z3 = z2.redMul(this.z);
  var pz3 = pz2.redMul(p.z);
  return this.y.redMul(pz3).redISub(p.y.redMul(z3)).cmpn(0) === 0;
};

JPoint.prototype.eqXToP = function eqXToP(x) {
  var zs = this.z.redSqr();
  var rx = x.toRed(this.curve.red).redMul(zs);
  if (this.x.cmp(rx) === 0)
    return true;

  var xc = x.clone();
  var t = this.curve.redN.redMul(zs);
  for (;;) {
    xc.iadd(this.curve.n);
    if (xc.cmp(this.curve.p) >= 0)
      return false;

    rx.redIAdd(t);
    if (this.x.cmp(rx) === 0)
      return true;
  }
};

JPoint.prototype.inspect = function inspect() {
  if (this.isInfinity())
    return '<EC JPoint Infinity>';
  return '<EC JPoint x: ' + this.x.toString(16, 2) +
      ' y: ' + this.y.toString(16, 2) +
      ' z: ' + this.z.toString(16, 2) + '>';
};

JPoint.prototype.isInfinity = function isInfinity() {
  // XXX This code assumes that zero is always zero in red
  return this.z.cmpn(0) === 0;
};

},{"../utils":203,"./base":190,"bn.js":136,"inherits":245}],195:[function(require,module,exports){
'use strict';

var curves = exports;

var hash = require('hash.js');
var curve = require('./curve');
var utils = require('./utils');

var assert = utils.assert;

function PresetCurve(options) {
  if (options.type === 'short')
    this.curve = new curve.short(options);
  else if (options.type === 'edwards')
    this.curve = new curve.edwards(options);
  else
    this.curve = new curve.mont(options);
  this.g = this.curve.g;
  this.n = this.curve.n;
  this.hash = options.hash;

  assert(this.g.validate(), 'Invalid curve');
  assert(this.g.mul(this.n).isInfinity(), 'Invalid curve, G*N != O');
}
curves.PresetCurve = PresetCurve;

function defineCurve(name, options) {
  Object.defineProperty(curves, name, {
    configurable: true,
    enumerable: true,
    get: function() {
      var curve = new PresetCurve(options);
      Object.defineProperty(curves, name, {
        configurable: true,
        enumerable: true,
        value: curve
      });
      return curve;
    }
  });
}

defineCurve('p192', {
  type: 'short',
  prime: 'p192',
  p: 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff',
  a: 'ffffffff ffffffff ffffffff fffffffe ffffffff fffffffc',
  b: '64210519 e59c80e7 0fa7e9ab 72243049 feb8deec c146b9b1',
  n: 'ffffffff ffffffff ffffffff 99def836 146bc9b1 b4d22831',
  hash: hash.sha256,
  gRed: false,
  g: [
    '188da80e b03090f6 7cbf20eb 43a18800 f4ff0afd 82ff1012',
    '07192b95 ffc8da78 631011ed 6b24cdd5 73f977a1 1e794811'
  ]
});

defineCurve('p224', {
  type: 'short',
  prime: 'p224',
  p: 'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001',
  a: 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff fffffffe',
  b: 'b4050a85 0c04b3ab f5413256 5044b0b7 d7bfd8ba 270b3943 2355ffb4',
  n: 'ffffffff ffffffff ffffffff ffff16a2 e0b8f03e 13dd2945 5c5c2a3d',
  hash: hash.sha256,
  gRed: false,
  g: [
    'b70e0cbd 6bb4bf7f 321390b9 4a03c1d3 56c21122 343280d6 115c1d21',
    'bd376388 b5f723fb 4c22dfe6 cd4375a0 5a074764 44d58199 85007e34'
  ]
});

defineCurve('p256', {
  type: 'short',
  prime: null,
  p: 'ffffffff 00000001 00000000 00000000 00000000 ffffffff ffffffff ffffffff',
  a: 'ffffffff 00000001 00000000 00000000 00000000 ffffffff ffffffff fffffffc',
  b: '5ac635d8 aa3a93e7 b3ebbd55 769886bc 651d06b0 cc53b0f6 3bce3c3e 27d2604b',
  n: 'ffffffff 00000000 ffffffff ffffffff bce6faad a7179e84 f3b9cac2 fc632551',
  hash: hash.sha256,
  gRed: false,
  g: [
    '6b17d1f2 e12c4247 f8bce6e5 63a440f2 77037d81 2deb33a0 f4a13945 d898c296',
    '4fe342e2 fe1a7f9b 8ee7eb4a 7c0f9e16 2bce3357 6b315ece cbb64068 37bf51f5'
  ]
});

defineCurve('p384', {
  type: 'short',
  prime: null,
  p: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'fffffffe ffffffff 00000000 00000000 ffffffff',
  a: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'fffffffe ffffffff 00000000 00000000 fffffffc',
  b: 'b3312fa7 e23ee7e4 988e056b e3f82d19 181d9c6e fe814112 0314088f ' +
     '5013875a c656398d 8a2ed19d 2a85c8ed d3ec2aef',
  n: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff c7634d81 ' +
     'f4372ddf 581a0db2 48b0a77a ecec196a ccc52973',
  hash: hash.sha384,
  gRed: false,
  g: [
    'aa87ca22 be8b0537 8eb1c71e f320ad74 6e1d3b62 8ba79b98 59f741e0 82542a38 ' +
    '5502f25d bf55296c 3a545e38 72760ab7',
    '3617de4a 96262c6f 5d9e98bf 9292dc29 f8f41dbd 289a147c e9da3113 b5f0b8c0 ' +
    '0a60b1ce 1d7e819d 7a431d7c 90ea0e5f'
  ]
});

defineCurve('p521', {
  type: 'short',
  prime: null,
  p: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'ffffffff ffffffff ffffffff ffffffff ffffffff',
  a: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'ffffffff ffffffff ffffffff ffffffff fffffffc',
  b: '00000051 953eb961 8e1c9a1f 929a21a0 b68540ee a2da725b ' +
     '99b315f3 b8b48991 8ef109e1 56193951 ec7e937b 1652c0bd ' +
     '3bb1bf07 3573df88 3d2c34f1 ef451fd4 6b503f00',
  n: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'ffffffff ffffffff fffffffa 51868783 bf2f966b 7fcc0148 ' +
     'f709a5d0 3bb5c9b8 899c47ae bb6fb71e 91386409',
  hash: hash.sha512,
  gRed: false,
  g: [
    '000000c6 858e06b7 0404e9cd 9e3ecb66 2395b442 9c648139 ' +
    '053fb521 f828af60 6b4d3dba a14b5e77 efe75928 fe1dc127 ' +
    'a2ffa8de 3348b3c1 856a429b f97e7e31 c2e5bd66',
    '00000118 39296a78 9a3bc004 5c8a5fb4 2c7d1bd9 98f54449 ' +
    '579b4468 17afbd17 273e662c 97ee7299 5ef42640 c550b901 ' +
    '3fad0761 353c7086 a272c240 88be9476 9fd16650'
  ]
});

defineCurve('curve25519', {
  type: 'mont',
  prime: 'p25519',
  p: '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed',
  a: '76d06',
  b: '1',
  n: '1000000000000000 0000000000000000 14def9dea2f79cd6 5812631a5cf5d3ed',
  hash: hash.sha256,
  gRed: false,
  g: [
    '9'
  ]
});

defineCurve('ed25519', {
  type: 'edwards',
  prime: 'p25519',
  p: '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed',
  a: '-1',
  c: '1',
  // -121665 * (121666^(-1)) (mod P)
  d: '52036cee2b6ffe73 8cc740797779e898 00700a4d4141d8ab 75eb4dca135978a3',
  n: '1000000000000000 0000000000000000 14def9dea2f79cd6 5812631a5cf5d3ed',
  hash: hash.sha256,
  gRed: false,
  g: [
    '216936d3cd6e53fec0a4e231fdd6dc5c692cc7609525a7b2c9562d608f25d51a',

    // 4/5
    '6666666666666666666666666666666666666666666666666666666666666658'
  ]
});

var pre;
try {
  pre = require('./precomputed/secp256k1');
} catch (e) {
  pre = undefined;
}

defineCurve('secp256k1', {
  type: 'short',
  prime: 'k256',
  p: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f',
  a: '0',
  b: '7',
  n: 'ffffffff ffffffff ffffffff fffffffe baaedce6 af48a03b bfd25e8c d0364141',
  h: '1',
  hash: hash.sha256,

  // Precomputed endomorphism
  beta: '7ae96a2b657c07106e64479eac3434e99cf0497512f58995c1396c28719501ee',
  lambda: '5363ad4cc05c30e0a5261c028812645a122e22ea20816678df02967c1b23bd72',
  basis: [
    {
      a: '3086d221a7d46bcde86c90e49284eb15',
      b: '-e4437ed6010e88286f547fa90abfe4c3'
    },
    {
      a: '114ca50f7a8e2f3f657c1108d9d44cfd8',
      b: '3086d221a7d46bcde86c90e49284eb15'
    }
  ],

  gRed: false,
  g: [
    '79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798',
    '483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8',
    pre
  ]
});

},{"./curve":192,"./precomputed/secp256k1":202,"./utils":203,"hash.js":230}],196:[function(require,module,exports){
'use strict';

var BN = require('bn.js');
var HmacDRBG = require('hmac-drbg');
var utils = require('../utils');
var curves = require('../curves');
var rand = require('brorand');
var assert = utils.assert;

var KeyPair = require('./key');
var Signature = require('./signature');

function EC(options) {
  if (!(this instanceof EC))
    return new EC(options);

  // Shortcut `elliptic.ec(curve-name)`
  if (typeof options === 'string') {
    assert(curves.hasOwnProperty(options), 'Unknown curve ' + options);

    options = curves[options];
  }

  // Shortcut for `elliptic.ec(elliptic.curves.curveName)`
  if (options instanceof curves.PresetCurve)
    options = { curve: options };

  this.curve = options.curve.curve;
  this.n = this.curve.n;
  this.nh = this.n.ushrn(1);
  this.g = this.curve.g;

  // Point on curve
  this.g = options.curve.g;
  this.g.precompute(options.curve.n.bitLength() + 1);

  // Hash for function for DRBG
  this.hash = options.hash || options.curve.hash;
}
module.exports = EC;

EC.prototype.keyPair = function keyPair(options) {
  return new KeyPair(this, options);
};

EC.prototype.keyFromPrivate = function keyFromPrivate(priv, enc) {
  return KeyPair.fromPrivate(this, priv, enc);
};

EC.prototype.keyFromPublic = function keyFromPublic(pub, enc) {
  return KeyPair.fromPublic(this, pub, enc);
};

EC.prototype.genKeyPair = function genKeyPair(options) {
  if (!options)
    options = {};

  // Instantiate Hmac_DRBG
  var drbg = new HmacDRBG({
    hash: this.hash,
    pers: options.pers,
    persEnc: options.persEnc || 'utf8',
    entropy: options.entropy || rand(this.hash.hmacStrength),
    entropyEnc: options.entropy && options.entropyEnc || 'utf8',
    nonce: this.n.toArray()
  });

  var bytes = this.n.byteLength();
  var ns2 = this.n.sub(new BN(2));
  do {
    var priv = new BN(drbg.generate(bytes));
    if (priv.cmp(ns2) > 0)
      continue;

    priv.iaddn(1);
    return this.keyFromPrivate(priv);
  } while (true);
};

EC.prototype._truncateToN = function truncateToN(msg, truncOnly) {
  var delta = msg.byteLength() * 8 - this.n.bitLength();
  if (delta > 0)
    msg = msg.ushrn(delta);
  if (!truncOnly && msg.cmp(this.n) >= 0)
    return msg.sub(this.n);
  else
    return msg;
};

EC.prototype.sign = function sign(msg, key, enc, options) {
  if (typeof enc === 'object') {
    options = enc;
    enc = null;
  }
  if (!options)
    options = {};

  key = this.keyFromPrivate(key, enc);
  msg = this._truncateToN(new BN(msg, 16));

  // Zero-extend key to provide enough entropy
  var bytes = this.n.byteLength();
  var bkey = key.getPrivate().toArray('be', bytes);

  // Zero-extend nonce to have the same byte size as N
  var nonce = msg.toArray('be', bytes);

  // Instantiate Hmac_DRBG
  var drbg = new HmacDRBG({
    hash: this.hash,
    entropy: bkey,
    nonce: nonce,
    pers: options.pers,
    persEnc: options.persEnc || 'utf8'
  });

  // Number of bytes to generate
  var ns1 = this.n.sub(new BN(1));

  for (var iter = 0; true; iter++) {
    var k = options.k ?
        options.k(iter) :
        new BN(drbg.generate(this.n.byteLength()));
    k = this._truncateToN(k, true);
    if (k.cmpn(1) <= 0 || k.cmp(ns1) >= 0)
      continue;

    var kp = this.g.mul(k);
    if (kp.isInfinity())
      continue;

    var kpX = kp.getX();
    var r = kpX.umod(this.n);
    if (r.cmpn(0) === 0)
      continue;

    var s = k.invm(this.n).mul(r.mul(key.getPrivate()).iadd(msg));
    s = s.umod(this.n);
    if (s.cmpn(0) === 0)
      continue;

    var recoveryParam = (kp.getY().isOdd() ? 1 : 0) |
                        (kpX.cmp(r) !== 0 ? 2 : 0);

    // Use complement of `s`, if it is > `n / 2`
    if (options.canonical && s.cmp(this.nh) > 0) {
      s = this.n.sub(s);
      recoveryParam ^= 1;
    }

    return new Signature({ r: r, s: s, recoveryParam: recoveryParam });
  }
};

EC.prototype.verify = function verify(msg, signature, key, enc) {
  msg = this._truncateToN(new BN(msg, 16));
  key = this.keyFromPublic(key, enc);
  signature = new Signature(signature, 'hex');

  // Perform primitive values validation
  var r = signature.r;
  var s = signature.s;
  if (r.cmpn(1) < 0 || r.cmp(this.n) >= 0)
    return false;
  if (s.cmpn(1) < 0 || s.cmp(this.n) >= 0)
    return false;

  // Validate signature
  var sinv = s.invm(this.n);
  var u1 = sinv.mul(msg).umod(this.n);
  var u2 = sinv.mul(r).umod(this.n);

  if (!this.curve._maxwellTrick) {
    var p = this.g.mulAdd(u1, key.getPublic(), u2);
    if (p.isInfinity())
      return false;

    return p.getX().umod(this.n).cmp(r) === 0;
  }

  // NOTE: Greg Maxwell's trick, inspired by:
  // https://git.io/vad3K

  var p = this.g.jmulAdd(u1, key.getPublic(), u2);
  if (p.isInfinity())
    return false;

  // Compare `p.x` of Jacobian point with `r`,
  // this will do `p.x == r * p.z^2` instead of multiplying `p.x` by the
  // inverse of `p.z^2`
  return p.eqXToP(r);
};

EC.prototype.recoverPubKey = function(msg, signature, j, enc) {
  assert((3 & j) === j, 'The recovery param is more than two bits');
  signature = new Signature(signature, enc);

  var n = this.n;
  var e = new BN(msg);
  var r = signature.r;
  var s = signature.s;

  // A set LSB signifies that the y-coordinate is odd
  var isYOdd = j & 1;
  var isSecondKey = j >> 1;
  if (r.cmp(this.curve.p.umod(this.curve.n)) >= 0 && isSecondKey)
    throw new Error('Unable to find sencond key candinate');

  // 1.1. Let x = r + jn.
  if (isSecondKey)
    r = this.curve.pointFromX(r.add(this.curve.n), isYOdd);
  else
    r = this.curve.pointFromX(r, isYOdd);

  var rInv = signature.r.invm(n);
  var s1 = n.sub(e).mul(rInv).umod(n);
  var s2 = s.mul(rInv).umod(n);

  // 1.6.1 Compute Q = r^-1 (sR -  eG)
  //               Q = r^-1 (sR + -eG)
  return this.g.mulAdd(s1, r, s2);
};

EC.prototype.getKeyRecoveryParam = function(e, signature, Q, enc) {
  signature = new Signature(signature, enc);
  if (signature.recoveryParam !== null)
    return signature.recoveryParam;

  for (var i = 0; i < 4; i++) {
    var Qprime;
    try {
      Qprime = this.recoverPubKey(e, signature, i);
    } catch (e) {
      continue;
    }

    if (Qprime.eq(Q))
      return i;
  }
  throw new Error('Unable to find valid recovery factor');
};

},{"../curves":195,"../utils":203,"./key":197,"./signature":198,"bn.js":136,"brorand":137,"hmac-drbg":242}],197:[function(require,module,exports){
'use strict';

var BN = require('bn.js');
var utils = require('../utils');
var assert = utils.assert;

function KeyPair(ec, options) {
  this.ec = ec;
  this.priv = null;
  this.pub = null;

  // KeyPair(ec, { priv: ..., pub: ... })
  if (options.priv)
    this._importPrivate(options.priv, options.privEnc);
  if (options.pub)
    this._importPublic(options.pub, options.pubEnc);
}
module.exports = KeyPair;

KeyPair.fromPublic = function fromPublic(ec, pub, enc) {
  if (pub instanceof KeyPair)
    return pub;

  return new KeyPair(ec, {
    pub: pub,
    pubEnc: enc
  });
};

KeyPair.fromPrivate = function fromPrivate(ec, priv, enc) {
  if (priv instanceof KeyPair)
    return priv;

  return new KeyPair(ec, {
    priv: priv,
    privEnc: enc
  });
};

KeyPair.prototype.validate = function validate() {
  var pub = this.getPublic();

  if (pub.isInfinity())
    return { result: false, reason: 'Invalid public key' };
  if (!pub.validate())
    return { result: false, reason: 'Public key is not a point' };
  if (!pub.mul(this.ec.curve.n).isInfinity())
    return { result: false, reason: 'Public key * N != O' };

  return { result: true, reason: null };
};

KeyPair.prototype.getPublic = function getPublic(compact, enc) {
  // compact is optional argument
  if (typeof compact === 'string') {
    enc = compact;
    compact = null;
  }

  if (!this.pub)
    this.pub = this.ec.g.mul(this.priv);

  if (!enc)
    return this.pub;

  return this.pub.encode(enc, compact);
};

KeyPair.prototype.getPrivate = function getPrivate(enc) {
  if (enc === 'hex')
    return this.priv.toString(16, 2);
  else
    return this.priv;
};

KeyPair.prototype._importPrivate = function _importPrivate(key, enc) {
  this.priv = new BN(key, enc || 16);

  // Ensure that the priv won't be bigger than n, otherwise we may fail
  // in fixed multiplication method
  this.priv = this.priv.umod(this.ec.curve.n);
};

KeyPair.prototype._importPublic = function _importPublic(key, enc) {
  if (key.x || key.y) {
    // Montgomery points only have an `x` coordinate.
    // Weierstrass/Edwards points on the other hand have both `x` and
    // `y` coordinates.
    if (this.ec.curve.type === 'mont') {
      assert(key.x, 'Need x coordinate');
    } else if (this.ec.curve.type === 'short' ||
               this.ec.curve.type === 'edwards') {
      assert(key.x && key.y, 'Need both x and y coordinate');
    }
    this.pub = this.ec.curve.point(key.x, key.y);
    return;
  }
  this.pub = this.ec.curve.decodePoint(key, enc);
};

// ECDH
KeyPair.prototype.derive = function derive(pub) {
  return pub.mul(this.priv).getX();
};

// ECDSA
KeyPair.prototype.sign = function sign(msg, enc, options) {
  return this.ec.sign(msg, this, enc, options);
};

KeyPair.prototype.verify = function verify(msg, signature) {
  return this.ec.verify(msg, signature, this);
};

KeyPair.prototype.inspect = function inspect() {
  return '<Key priv: ' + (this.priv && this.priv.toString(16, 2)) +
         ' pub: ' + (this.pub && this.pub.inspect()) + ' >';
};

},{"../utils":203,"bn.js":136}],198:[function(require,module,exports){
'use strict';

var BN = require('bn.js');

var utils = require('../utils');
var assert = utils.assert;

function Signature(options, enc) {
  if (options instanceof Signature)
    return options;

  if (this._importDER(options, enc))
    return;

  assert(options.r && options.s, 'Signature without r or s');
  this.r = new BN(options.r, 16);
  this.s = new BN(options.s, 16);
  if (options.recoveryParam === undefined)
    this.recoveryParam = null;
  else
    this.recoveryParam = options.recoveryParam;
}
module.exports = Signature;

function Position() {
  this.place = 0;
}

function getLength(buf, p) {
  var initial = buf[p.place++];
  if (!(initial & 0x80)) {
    return initial;
  }
  var octetLen = initial & 0xf;
  var val = 0;
  for (var i = 0, off = p.place; i < octetLen; i++, off++) {
    val <<= 8;
    val |= buf[off];
  }
  p.place = off;
  return val;
}

function rmPadding(buf) {
  var i = 0;
  var len = buf.length - 1;
  while (!buf[i] && !(buf[i + 1] & 0x80) && i < len) {
    i++;
  }
  if (i === 0) {
    return buf;
  }
  return buf.slice(i);
}

Signature.prototype._importDER = function _importDER(data, enc) {
  data = utils.toArray(data, enc);
  var p = new Position();
  if (data[p.place++] !== 0x30) {
    return false;
  }
  var len = getLength(data, p);
  if ((len + p.place) !== data.length) {
    return false;
  }
  if (data[p.place++] !== 0x02) {
    return false;
  }
  var rlen = getLength(data, p);
  var r = data.slice(p.place, rlen + p.place);
  p.place += rlen;
  if (data[p.place++] !== 0x02) {
    return false;
  }
  var slen = getLength(data, p);
  if (data.length !== slen + p.place) {
    return false;
  }
  var s = data.slice(p.place, slen + p.place);
  if (r[0] === 0 && (r[1] & 0x80)) {
    r = r.slice(1);
  }
  if (s[0] === 0 && (s[1] & 0x80)) {
    s = s.slice(1);
  }

  this.r = new BN(r);
  this.s = new BN(s);
  this.recoveryParam = null;

  return true;
};

function constructLength(arr, len) {
  if (len < 0x80) {
    arr.push(len);
    return;
  }
  var octets = 1 + (Math.log(len) / Math.LN2 >>> 3);
  arr.push(octets | 0x80);
  while (--octets) {
    arr.push((len >>> (octets << 3)) & 0xff);
  }
  arr.push(len);
}

Signature.prototype.toDER = function toDER(enc) {
  var r = this.r.toArray();
  var s = this.s.toArray();

  // Pad values
  if (r[0] & 0x80)
    r = [ 0 ].concat(r);
  // Pad values
  if (s[0] & 0x80)
    s = [ 0 ].concat(s);

  r = rmPadding(r);
  s = rmPadding(s);

  while (!s[0] && !(s[1] & 0x80)) {
    s = s.slice(1);
  }
  var arr = [ 0x02 ];
  constructLength(arr, r.length);
  arr = arr.concat(r);
  arr.push(0x02);
  constructLength(arr, s.length);
  var backHalf = arr.concat(s);
  var res = [ 0x30 ];
  constructLength(res, backHalf.length);
  res = res.concat(backHalf);
  return utils.encode(res, enc);
};

},{"../utils":203,"bn.js":136}],199:[function(require,module,exports){
'use strict';

var hash = require('hash.js');
var curves = require('../curves');
var utils = require('../utils');
var assert = utils.assert;
var parseBytes = utils.parseBytes;
var KeyPair = require('./key');
var Signature = require('./signature');

function EDDSA(curve) {
  assert(curve === 'ed25519', 'only tested with ed25519 so far');

  if (!(this instanceof EDDSA))
    return new EDDSA(curve);

  var curve = curves[curve].curve;
  this.curve = curve;
  this.g = curve.g;
  this.g.precompute(curve.n.bitLength() + 1);

  this.pointClass = curve.point().constructor;
  this.encodingLength = Math.ceil(curve.n.bitLength() / 8);
  this.hash = hash.sha512;
}

module.exports = EDDSA;

/**
* @param {Array|String} message - message bytes
* @param {Array|String|KeyPair} secret - secret bytes or a keypair
* @returns {Signature} - signature
*/
EDDSA.prototype.sign = function sign(message, secret) {
  message = parseBytes(message);
  var key = this.keyFromSecret(secret);
  var r = this.hashInt(key.messagePrefix(), message);
  var R = this.g.mul(r);
  var Rencoded = this.encodePoint(R);
  var s_ = this.hashInt(Rencoded, key.pubBytes(), message)
               .mul(key.priv());
  var S = r.add(s_).umod(this.curve.n);
  return this.makeSignature({ R: R, S: S, Rencoded: Rencoded });
};

/**
* @param {Array} message - message bytes
* @param {Array|String|Signature} sig - sig bytes
* @param {Array|String|Point|KeyPair} pub - public key
* @returns {Boolean} - true if public key matches sig of message
*/
EDDSA.prototype.verify = function verify(message, sig, pub) {
  message = parseBytes(message);
  sig = this.makeSignature(sig);
  var key = this.keyFromPublic(pub);
  var h = this.hashInt(sig.Rencoded(), key.pubBytes(), message);
  var SG = this.g.mul(sig.S());
  var RplusAh = sig.R().add(key.pub().mul(h));
  return RplusAh.eq(SG);
};

EDDSA.prototype.hashInt = function hashInt() {
  var hash = this.hash();
  for (var i = 0; i < arguments.length; i++)
    hash.update(arguments[i]);
  return utils.intFromLE(hash.digest()).umod(this.curve.n);
};

EDDSA.prototype.keyFromPublic = function keyFromPublic(pub) {
  return KeyPair.fromPublic(this, pub);
};

EDDSA.prototype.keyFromSecret = function keyFromSecret(secret) {
  return KeyPair.fromSecret(this, secret);
};

EDDSA.prototype.makeSignature = function makeSignature(sig) {
  if (sig instanceof Signature)
    return sig;
  return new Signature(this, sig);
};

/**
* * https://tools.ietf.org/html/draft-josefsson-eddsa-ed25519-03#section-5.2
*
* EDDSA defines methods for encoding and decoding points and integers. These are
* helper convenience methods, that pass along to utility functions implied
* parameters.
*
*/
EDDSA.prototype.encodePoint = function encodePoint(point) {
  var enc = point.getY().toArray('le', this.encodingLength);
  enc[this.encodingLength - 1] |= point.getX().isOdd() ? 0x80 : 0;
  return enc;
};

EDDSA.prototype.decodePoint = function decodePoint(bytes) {
  bytes = utils.parseBytes(bytes);

  var lastIx = bytes.length - 1;
  var normed = bytes.slice(0, lastIx).concat(bytes[lastIx] & ~0x80);
  var xIsOdd = (bytes[lastIx] & 0x80) !== 0;

  var y = utils.intFromLE(normed);
  return this.curve.pointFromY(y, xIsOdd);
};

EDDSA.prototype.encodeInt = function encodeInt(num) {
  return num.toArray('le', this.encodingLength);
};

EDDSA.prototype.decodeInt = function decodeInt(bytes) {
  return utils.intFromLE(bytes);
};

EDDSA.prototype.isPoint = function isPoint(val) {
  return val instanceof this.pointClass;
};

},{"../curves":195,"../utils":203,"./key":200,"./signature":201,"hash.js":230}],200:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var assert = utils.assert;
var parseBytes = utils.parseBytes;
var cachedProperty = utils.cachedProperty;

/**
* @param {EDDSA} eddsa - instance
* @param {Object} params - public/private key parameters
*
* @param {Array<Byte>} [params.secret] - secret seed bytes
* @param {Point} [params.pub] - public key point (aka `A` in eddsa terms)
* @param {Array<Byte>} [params.pub] - public key point encoded as bytes
*
*/
function KeyPair(eddsa, params) {
  this.eddsa = eddsa;
  this._secret = parseBytes(params.secret);
  if (eddsa.isPoint(params.pub))
    this._pub = params.pub;
  else
    this._pubBytes = parseBytes(params.pub);
}

KeyPair.fromPublic = function fromPublic(eddsa, pub) {
  if (pub instanceof KeyPair)
    return pub;
  return new KeyPair(eddsa, { pub: pub });
};

KeyPair.fromSecret = function fromSecret(eddsa, secret) {
  if (secret instanceof KeyPair)
    return secret;
  return new KeyPair(eddsa, { secret: secret });
};

KeyPair.prototype.secret = function secret() {
  return this._secret;
};

cachedProperty(KeyPair, 'pubBytes', function pubBytes() {
  return this.eddsa.encodePoint(this.pub());
});

cachedProperty(KeyPair, 'pub', function pub() {
  if (this._pubBytes)
    return this.eddsa.decodePoint(this._pubBytes);
  return this.eddsa.g.mul(this.priv());
});

cachedProperty(KeyPair, 'privBytes', function privBytes() {
  var eddsa = this.eddsa;
  var hash = this.hash();
  var lastIx = eddsa.encodingLength - 1;

  var a = hash.slice(0, eddsa.encodingLength);
  a[0] &= 248;
  a[lastIx] &= 127;
  a[lastIx] |= 64;

  return a;
});

cachedProperty(KeyPair, 'priv', function priv() {
  return this.eddsa.decodeInt(this.privBytes());
});

cachedProperty(KeyPair, 'hash', function hash() {
  return this.eddsa.hash().update(this.secret()).digest();
});

cachedProperty(KeyPair, 'messagePrefix', function messagePrefix() {
  return this.hash().slice(this.eddsa.encodingLength);
});

KeyPair.prototype.sign = function sign(message) {
  assert(this._secret, 'KeyPair can only verify');
  return this.eddsa.sign(message, this);
};

KeyPair.prototype.verify = function verify(message, sig) {
  return this.eddsa.verify(message, sig, this);
};

KeyPair.prototype.getSecret = function getSecret(enc) {
  assert(this._secret, 'KeyPair is public only');
  return utils.encode(this.secret(), enc);
};

KeyPair.prototype.getPublic = function getPublic(enc) {
  return utils.encode(this.pubBytes(), enc);
};

module.exports = KeyPair;

},{"../utils":203}],201:[function(require,module,exports){
'use strict';

var BN = require('bn.js');
var utils = require('../utils');
var assert = utils.assert;
var cachedProperty = utils.cachedProperty;
var parseBytes = utils.parseBytes;

/**
* @param {EDDSA} eddsa - eddsa instance
* @param {Array<Bytes>|Object} sig -
* @param {Array<Bytes>|Point} [sig.R] - R point as Point or bytes
* @param {Array<Bytes>|bn} [sig.S] - S scalar as bn or bytes
* @param {Array<Bytes>} [sig.Rencoded] - R point encoded
* @param {Array<Bytes>} [sig.Sencoded] - S scalar encoded
*/
function Signature(eddsa, sig) {
  this.eddsa = eddsa;

  if (typeof sig !== 'object')
    sig = parseBytes(sig);

  if (Array.isArray(sig)) {
    sig = {
      R: sig.slice(0, eddsa.encodingLength),
      S: sig.slice(eddsa.encodingLength)
    };
  }

  assert(sig.R && sig.S, 'Signature without R or S');

  if (eddsa.isPoint(sig.R))
    this._R = sig.R;
  if (sig.S instanceof BN)
    this._S = sig.S;

  this._Rencoded = Array.isArray(sig.R) ? sig.R : sig.Rencoded;
  this._Sencoded = Array.isArray(sig.S) ? sig.S : sig.Sencoded;
}

cachedProperty(Signature, 'S', function S() {
  return this.eddsa.decodeInt(this.Sencoded());
});

cachedProperty(Signature, 'R', function R() {
  return this.eddsa.decodePoint(this.Rencoded());
});

cachedProperty(Signature, 'Rencoded', function Rencoded() {
  return this.eddsa.encodePoint(this.R());
});

cachedProperty(Signature, 'Sencoded', function Sencoded() {
  return this.eddsa.encodeInt(this.S());
});

Signature.prototype.toBytes = function toBytes() {
  return this.Rencoded().concat(this.Sencoded());
};

Signature.prototype.toHex = function toHex() {
  return utils.encode(this.toBytes(), 'hex').toUpperCase();
};

module.exports = Signature;

},{"../utils":203,"bn.js":136}],202:[function(require,module,exports){
module.exports = {
  doubles: {
    step: 4,
    points: [
      [
        'e60fce93b59e9ec53011aabc21c23e97b2a31369b87a5ae9c44ee89e2a6dec0a',
        'f7e3507399e595929db99f34f57937101296891e44d23f0be1f32cce69616821'
      ],
      [
        '8282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508',
        '11f8a8098557dfe45e8256e830b60ace62d613ac2f7b17bed31b6eaff6e26caf'
      ],
      [
        '175e159f728b865a72f99cc6c6fc846de0b93833fd2222ed73fce5b551e5b739',
        'd3506e0d9e3c79eba4ef97a51ff71f5eacb5955add24345c6efa6ffee9fed695'
      ],
      [
        '363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640',
        '4e273adfc732221953b445397f3363145b9a89008199ecb62003c7f3bee9de9'
      ],
      [
        '8b4b5f165df3c2be8c6244b5b745638843e4a781a15bcd1b69f79a55dffdf80c',
        '4aad0a6f68d308b4b3fbd7813ab0da04f9e336546162ee56b3eff0c65fd4fd36'
      ],
      [
        '723cbaa6e5db996d6bf771c00bd548c7b700dbffa6c0e77bcb6115925232fcda',
        '96e867b5595cc498a921137488824d6e2660a0653779494801dc069d9eb39f5f'
      ],
      [
        'eebfa4d493bebf98ba5feec812c2d3b50947961237a919839a533eca0e7dd7fa',
        '5d9a8ca3970ef0f269ee7edaf178089d9ae4cdc3a711f712ddfd4fdae1de8999'
      ],
      [
        '100f44da696e71672791d0a09b7bde459f1215a29b3c03bfefd7835b39a48db0',
        'cdd9e13192a00b772ec8f3300c090666b7ff4a18ff5195ac0fbd5cd62bc65a09'
      ],
      [
        'e1031be262c7ed1b1dc9227a4a04c017a77f8d4464f3b3852c8acde6e534fd2d',
        '9d7061928940405e6bb6a4176597535af292dd419e1ced79a44f18f29456a00d'
      ],
      [
        'feea6cae46d55b530ac2839f143bd7ec5cf8b266a41d6af52d5e688d9094696d',
        'e57c6b6c97dce1bab06e4e12bf3ecd5c981c8957cc41442d3155debf18090088'
      ],
      [
        'da67a91d91049cdcb367be4be6ffca3cfeed657d808583de33fa978bc1ec6cb1',
        '9bacaa35481642bc41f463f7ec9780e5dec7adc508f740a17e9ea8e27a68be1d'
      ],
      [
        '53904faa0b334cdda6e000935ef22151ec08d0f7bb11069f57545ccc1a37b7c0',
        '5bc087d0bc80106d88c9eccac20d3c1c13999981e14434699dcb096b022771c8'
      ],
      [
        '8e7bcd0bd35983a7719cca7764ca906779b53a043a9b8bcaeff959f43ad86047',
        '10b7770b2a3da4b3940310420ca9514579e88e2e47fd68b3ea10047e8460372a'
      ],
      [
        '385eed34c1cdff21e6d0818689b81bde71a7f4f18397e6690a841e1599c43862',
        '283bebc3e8ea23f56701de19e9ebf4576b304eec2086dc8cc0458fe5542e5453'
      ],
      [
        '6f9d9b803ecf191637c73a4413dfa180fddf84a5947fbc9c606ed86c3fac3a7',
        '7c80c68e603059ba69b8e2a30e45c4d47ea4dd2f5c281002d86890603a842160'
      ],
      [
        '3322d401243c4e2582a2147c104d6ecbf774d163db0f5e5313b7e0e742d0e6bd',
        '56e70797e9664ef5bfb019bc4ddaf9b72805f63ea2873af624f3a2e96c28b2a0'
      ],
      [
        '85672c7d2de0b7da2bd1770d89665868741b3f9af7643397721d74d28134ab83',
        '7c481b9b5b43b2eb6374049bfa62c2e5e77f17fcc5298f44c8e3094f790313a6'
      ],
      [
        '948bf809b1988a46b06c9f1919413b10f9226c60f668832ffd959af60c82a0a',
        '53a562856dcb6646dc6b74c5d1c3418c6d4dff08c97cd2bed4cb7f88d8c8e589'
      ],
      [
        '6260ce7f461801c34f067ce0f02873a8f1b0e44dfc69752accecd819f38fd8e8',
        'bc2da82b6fa5b571a7f09049776a1ef7ecd292238051c198c1a84e95b2b4ae17'
      ],
      [
        'e5037de0afc1d8d43d8348414bbf4103043ec8f575bfdc432953cc8d2037fa2d',
        '4571534baa94d3b5f9f98d09fb990bddbd5f5b03ec481f10e0e5dc841d755bda'
      ],
      [
        'e06372b0f4a207adf5ea905e8f1771b4e7e8dbd1c6a6c5b725866a0ae4fce725',
        '7a908974bce18cfe12a27bb2ad5a488cd7484a7787104870b27034f94eee31dd'
      ],
      [
        '213c7a715cd5d45358d0bbf9dc0ce02204b10bdde2a3f58540ad6908d0559754',
        '4b6dad0b5ae462507013ad06245ba190bb4850f5f36a7eeddff2c27534b458f2'
      ],
      [
        '4e7c272a7af4b34e8dbb9352a5419a87e2838c70adc62cddf0cc3a3b08fbd53c',
        '17749c766c9d0b18e16fd09f6def681b530b9614bff7dd33e0b3941817dcaae6'
      ],
      [
        'fea74e3dbe778b1b10f238ad61686aa5c76e3db2be43057632427e2840fb27b6',
        '6e0568db9b0b13297cf674deccb6af93126b596b973f7b77701d3db7f23cb96f'
      ],
      [
        '76e64113f677cf0e10a2570d599968d31544e179b760432952c02a4417bdde39',
        'c90ddf8dee4e95cf577066d70681f0d35e2a33d2b56d2032b4b1752d1901ac01'
      ],
      [
        'c738c56b03b2abe1e8281baa743f8f9a8f7cc643df26cbee3ab150242bcbb891',
        '893fb578951ad2537f718f2eacbfbbbb82314eef7880cfe917e735d9699a84c3'
      ],
      [
        'd895626548b65b81e264c7637c972877d1d72e5f3a925014372e9f6588f6c14b',
        'febfaa38f2bc7eae728ec60818c340eb03428d632bb067e179363ed75d7d991f'
      ],
      [
        'b8da94032a957518eb0f6433571e8761ceffc73693e84edd49150a564f676e03',
        '2804dfa44805a1e4d7c99cc9762808b092cc584d95ff3b511488e4e74efdf6e7'
      ],
      [
        'e80fea14441fb33a7d8adab9475d7fab2019effb5156a792f1a11778e3c0df5d',
        'eed1de7f638e00771e89768ca3ca94472d155e80af322ea9fcb4291b6ac9ec78'
      ],
      [
        'a301697bdfcd704313ba48e51d567543f2a182031efd6915ddc07bbcc4e16070',
        '7370f91cfb67e4f5081809fa25d40f9b1735dbf7c0a11a130c0d1a041e177ea1'
      ],
      [
        '90ad85b389d6b936463f9d0512678de208cc330b11307fffab7ac63e3fb04ed4',
        'e507a3620a38261affdcbd9427222b839aefabe1582894d991d4d48cb6ef150'
      ],
      [
        '8f68b9d2f63b5f339239c1ad981f162ee88c5678723ea3351b7b444c9ec4c0da',
        '662a9f2dba063986de1d90c2b6be215dbbea2cfe95510bfdf23cbf79501fff82'
      ],
      [
        'e4f3fb0176af85d65ff99ff9198c36091f48e86503681e3e6686fd5053231e11',
        '1e63633ad0ef4f1c1661a6d0ea02b7286cc7e74ec951d1c9822c38576feb73bc'
      ],
      [
        '8c00fa9b18ebf331eb961537a45a4266c7034f2f0d4e1d0716fb6eae20eae29e',
        'efa47267fea521a1a9dc343a3736c974c2fadafa81e36c54e7d2a4c66702414b'
      ],
      [
        'e7a26ce69dd4829f3e10cec0a9e98ed3143d084f308b92c0997fddfc60cb3e41',
        '2a758e300fa7984b471b006a1aafbb18d0a6b2c0420e83e20e8a9421cf2cfd51'
      ],
      [
        'b6459e0ee3662ec8d23540c223bcbdc571cbcb967d79424f3cf29eb3de6b80ef',
        '67c876d06f3e06de1dadf16e5661db3c4b3ae6d48e35b2ff30bf0b61a71ba45'
      ],
      [
        'd68a80c8280bb840793234aa118f06231d6f1fc67e73c5a5deda0f5b496943e8',
        'db8ba9fff4b586d00c4b1f9177b0e28b5b0e7b8f7845295a294c84266b133120'
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      [
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      ],
      [
        '4df9c14919cde61f6d51dfdbe5fee5dceec4143ba8d1ca888e8bd373fd054c96',
        '35ec51092d8728050974c23a1d85d4b5d506cdc288490192ebac06cad10d5d'
      ],
      [
        '9c3919a84a474870faed8a9c1cc66021523489054d7f0308cbfc99c8ac1f98cd',
        'ddb84f0f4a4ddd57584f044bf260e641905326f76c64c8e6be7e5e03d4fc599d'
      ],
      [
        '6057170b1dd12fdf8de05f281d8e06bb91e1493a8b91d4cc5a21382120a959e5',
        '9a1af0b26a6a4807add9a2daf71df262465152bc3ee24c65e899be932385a2a8'
      ],
      [
        'a576df8e23a08411421439a4518da31880cef0fba7d4df12b1a6973eecb94266',
        '40a6bf20e76640b2c92b97afe58cd82c432e10a7f514d9f3ee8be11ae1b28ec8'
      ],
      [
        '7778a78c28dec3e30a05fe9629de8c38bb30d1f5cf9a3a208f763889be58ad71',
        '34626d9ab5a5b22ff7098e12f2ff580087b38411ff24ac563b513fc1fd9f43ac'
      ],
      [
        '928955ee637a84463729fd30e7afd2ed5f96274e5ad7e5cb09eda9c06d903ac',
        'c25621003d3f42a827b78a13093a95eeac3d26efa8a8d83fc5180e935bcd091f'
      ],
      [
        '85d0fef3ec6db109399064f3a0e3b2855645b4a907ad354527aae75163d82751',
        '1f03648413a38c0be29d496e582cf5663e8751e96877331582c237a24eb1f962'
      ],
      [
        'ff2b0dce97eece97c1c9b6041798b85dfdfb6d8882da20308f5404824526087e',
        '493d13fef524ba188af4c4dc54d07936c7b7ed6fb90e2ceb2c951e01f0c29907'
      ],
      [
        '827fbbe4b1e880ea9ed2b2e6301b212b57f1ee148cd6dd28780e5e2cf856e241',
        'c60f9c923c727b0b71bef2c67d1d12687ff7a63186903166d605b68baec293ec'
      ],
      [
        'eaa649f21f51bdbae7be4ae34ce6e5217a58fdce7f47f9aa7f3b58fa2120e2b3',
        'be3279ed5bbbb03ac69a80f89879aa5a01a6b965f13f7e59d47a5305ba5ad93d'
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      ]
    ]
  }
};

},{}],203:[function(require,module,exports){
'use strict';

var utils = exports;
var BN = require('bn.js');
var minAssert = require('minimalistic-assert');
var minUtils = require('minimalistic-crypto-utils');

utils.assert = minAssert;
utils.toArray = minUtils.toArray;
utils.zero2 = minUtils.zero2;
utils.toHex = minUtils.toHex;
utils.encode = minUtils.encode;

// Represent num in a w-NAF form
function getNAF(num, w) {
  var naf = [];
  var ws = 1 << (w + 1);
  var k = num.clone();
  while (k.cmpn(1) >= 0) {
    var z;
    if (k.isOdd()) {
      var mod = k.andln(ws - 1);
      if (mod > (ws >> 1) - 1)
        z = (ws >> 1) - mod;
      else
        z = mod;
      k.isubn(z);
    } else {
      z = 0;
    }
    naf.push(z);

    // Optimization, shift by word if possible
    var shift = (k.cmpn(0) !== 0 && k.andln(ws - 1) === 0) ? (w + 1) : 1;
    for (var i = 1; i < shift; i++)
      naf.push(0);
    k.iushrn(shift);
  }

  return naf;
}
utils.getNAF = getNAF;

// Represent k1, k2 in a Joint Sparse Form
function getJSF(k1, k2) {
  var jsf = [
    [],
    []
  ];

  k1 = k1.clone();
  k2 = k2.clone();
  var d1 = 0;
  var d2 = 0;
  while (k1.cmpn(-d1) > 0 || k2.cmpn(-d2) > 0) {

    // First phase
    var m14 = (k1.andln(3) + d1) & 3;
    var m24 = (k2.andln(3) + d2) & 3;
    if (m14 === 3)
      m14 = -1;
    if (m24 === 3)
      m24 = -1;
    var u1;
    if ((m14 & 1) === 0) {
      u1 = 0;
    } else {
      var m8 = (k1.andln(7) + d1) & 7;
      if ((m8 === 3 || m8 === 5) && m24 === 2)
        u1 = -m14;
      else
        u1 = m14;
    }
    jsf[0].push(u1);

    var u2;
    if ((m24 & 1) === 0) {
      u2 = 0;
    } else {
      var m8 = (k2.andln(7) + d2) & 7;
      if ((m8 === 3 || m8 === 5) && m14 === 2)
        u2 = -m24;
      else
        u2 = m24;
    }
    jsf[1].push(u2);

    // Second phase
    if (2 * d1 === u1 + 1)
      d1 = 1 - d1;
    if (2 * d2 === u2 + 1)
      d2 = 1 - d2;
    k1.iushrn(1);
    k2.iushrn(1);
  }

  return jsf;
}
utils.getJSF = getJSF;

function cachedProperty(obj, name, computer) {
  var key = '_' + name;
  obj.prototype[name] = function cachedProperty() {
    return this[key] !== undefined ? this[key] :
           this[key] = computer.call(this);
  };
}
utils.cachedProperty = cachedProperty;

function parseBytes(bytes) {
  return typeof bytes === 'string' ? utils.toArray(bytes, 'hex') :
                                     bytes;
}
utils.parseBytes = parseBytes;

function intFromLE(bytes) {
  return new BN(bytes, 'hex', 'le');
}
utils.intFromLE = intFromLE;


},{"bn.js":136,"minimalistic-assert":287,"minimalistic-crypto-utils":288}],204:[function(require,module,exports){
module.exports={
  "_from": "elliptic@^6.0.0",
  "_id": "elliptic@6.5.1",
  "_inBundle": false,
  "_integrity": "sha512-xvJINNLbTeWQjrl6X+7eQCrIy/YPv5XCpKW6kB5mKvtnGILoLDcySuwomfdzt0BMdLNVnuRNTuzKNHj0bva1Cg==",
  "_location": "/elliptic",
  "_phantomChildren": {},
  "_requested": {
    "type": "range",
    "registry": true,
    "raw": "elliptic@^6.0.0",
    "name": "elliptic",
    "escapedName": "elliptic",
    "rawSpec": "^6.0.0",
    "saveSpec": null,
    "fetchSpec": "^6.0.0"
  },
  "_requiredBy": [
    "/browserify-sign",
    "/create-ecdh"
  ],
  "_resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.1.tgz",
  "_shasum": "c380f5f909bf1b9b4428d028cd18d3b0efd6b52b",
  "_spec": "elliptic@^6.0.0",
  "_where": "/mnt/c/git/exceljs/node_modules/browserify-sign",
  "author": {
    "name": "Fedor Indutny",
    "email": "fedor@indutny.com"
  },
  "bugs": {
    "url": "https://github.com/indutny/elliptic/issues"
  },
  "bundleDependencies": false,
  "dependencies": {
    "bn.js": "^4.4.0",
    "brorand": "^1.0.1",
    "hash.js": "^1.0.0",
    "hmac-drbg": "^1.0.0",
    "inherits": "^2.0.1",
    "minimalistic-assert": "^1.0.0",
    "minimalistic-crypto-utils": "^1.0.0"
  },
  "deprecated": false,
  "description": "EC cryptography",
  "devDependencies": {
    "brfs": "^1.4.3",
    "coveralls": "^3.0.4",
    "grunt": "^1.0.4",
    "grunt-browserify": "^5.0.0",
    "grunt-cli": "^1.2.0",
    "grunt-contrib-connect": "^1.0.0",
    "grunt-contrib-copy": "^1.0.0",
    "grunt-contrib-uglify": "^1.0.1",
    "grunt-mocha-istanbul": "^3.0.1",
    "grunt-saucelabs": "^9.0.1",
    "istanbul": "^0.4.2",
    "jscs": "^3.0.7",
    "jshint": "^2.6.0",
    "mocha": "^6.1.4"
  },
  "files": [
    "lib"
  ],
  "homepage": "https://github.com/indutny/elliptic",
  "keywords": [
    "EC",
    "Elliptic",
    "curve",
    "Cryptography"
  ],
  "license": "MIT",
  "main": "lib/elliptic.js",
  "name": "elliptic",
  "repository": {
    "type": "git",
    "url": "git+ssh://git@github.com/indutny/elliptic.git"
  },
  "scripts": {
    "jscs": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js",
    "jshint": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js",
    "lint": "npm run jscs && npm run jshint",
    "test": "npm run lint && npm run unit",
    "unit": "istanbul test _mocha --reporter=spec test/index.js",
    "version": "grunt dist && git add dist/"
  },
  "version": "6.5.1"
}

},{}],205:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var objectCreate = Object.create || objectCreatePolyfill
var objectKeys = Object.keys || objectKeysPolyfill
var bind = Function.prototype.bind || functionBindPolyfill

function EventEmitter() {
  if (!this._events || !Object.prototype.hasOwnProperty.call(this, '_events')) {
    this._events = objectCreate(null);
    this._eventsCount = 0;
  }

  this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;

// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;

EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;

// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
var defaultMaxListeners = 10;

var hasDefineProperty;
try {
  var o = {};
  if (Object.defineProperty) Object.defineProperty(o, 'x', { value: 0 });
  hasDefineProperty = o.x === 0;
} catch (err) { hasDefineProperty = false }
if (hasDefineProperty) {
  Object.defineProperty(EventEmitter, 'defaultMaxListeners', {
    enumerable: true,
    get: function() {
      return defaultMaxListeners;
    },
    set: function(arg) {
      // check whether the input is a positive number (whose value is zero or
      // greater and not a NaN).
      if (typeof arg !== 'number' || arg < 0 || arg !== arg)
        throw new TypeError('"defaultMaxListeners" must be a positive number');
      defaultMaxListeners = arg;
    }
  });
} else {
  EventEmitter.defaultMaxListeners = defaultMaxListeners;
}

// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {
  if (typeof n !== 'number' || n < 0 || isNaN(n))
    throw new TypeError('"n" argument must be a positive number');
  this._maxListeners = n;
  return this;
};

function $getMaxListeners(that) {
  if (that._maxListeners === undefined)
    return EventEmitter.defaultMaxListeners;
  return that._maxListeners;
}

EventEmitter.prototype.getMaxListeners = function getMaxListeners() {
  return $getMaxListeners(this);
};

// These standalone emit* functions are used to optimize calling of event
// handlers for fast cases because emit() itself often has a variable number of
// arguments and can be deoptimized because of that. These functions always have
// the same number of arguments and thus do not get deoptimized, so the code
// inside them can execute faster.
function emitNone(handler, isFn, self) {
  if (isFn)
    handler.call(self);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].call(self);
  }
}
function emitOne(handler, isFn, self, arg1) {
  if (isFn)
    handler.call(self, arg1);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].call(self, arg1);
  }
}
function emitTwo(handler, isFn, self, arg1, arg2) {
  if (isFn)
    handler.call(self, arg1, arg2);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].call(self, arg1, arg2);
  }
}
function emitThree(handler, isFn, self, arg1, arg2, arg3) {
  if (isFn)
    handler.call(self, arg1, arg2, arg3);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].call(self, arg1, arg2, arg3);
  }
}

function emitMany(handler, isFn, self, args) {
  if (isFn)
    handler.apply(self, args);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].apply(self, args);
  }
}

EventEmitter.prototype.emit = function emit(type) {
  var er, handler, len, args, i, events;
  var doError = (type === 'error');

  events = this._events;
  if (events)
    doError = (doError && events.error == null);
  else if (!doError)
    return false;

  // If there is no 'error' event listener then throw.
  if (doError) {
    if (arguments.length > 1)
      er = arguments[1];
    if (er instanceof Error) {
      throw er; // Unhandled 'error' event
    } else {
      // At least give some kind of context to the user
      var err = new Error('Unhandled "error" event. (' + er + ')');
      err.context = er;
      throw err;
    }
    return false;
  }

  handler = events[type];

  if (!handler)
    return false;

  var isFn = typeof handler === 'function';
  len = arguments.length;
  switch (len) {
      // fast cases
    case 1:
      emitNone(handler, isFn, this);
      break;
    case 2:
      emitOne(handler, isFn, this, arguments[1]);
      break;
    case 3:
      emitTwo(handler, isFn, this, arguments[1], arguments[2]);
      break;
    case 4:
      emitThree(handler, isFn, this, arguments[1], arguments[2], arguments[3]);
      break;
      // slower
    default:
      args = new Array(len - 1);
      for (i = 1; i < len; i++)
        args[i - 1] = arguments[i];
      emitMany(handler, isFn, this, args);
  }

  return true;
};

function _addListener(target, type, listener, prepend) {
  var m;
  var events;
  var existing;

  if (typeof listener !== 'function')
    throw new TypeError('"listener" argument must be a function');

  events = target._events;
  if (!events) {
    events = target._events = objectCreate(null);
    target._eventsCount = 0;
  } else {
    // To avoid recursion in the case that type === "newListener"! Before
    // adding it to the listeners, first emit "newListener".
    if (events.newListener) {
      target.emit('newListener', type,
          listener.listener ? listener.listener : listener);

      // Re-assign `events` because a newListener handler could have caused the
      // this._events to be assigned to a new object
      events = target._events;
    }
    existing = events[type];
  }

  if (!existing) {
    // Optimize the case of one listener. Don't need the extra array object.
    existing = events[type] = listener;
    ++target._eventsCount;
  } else {
    if (typeof existing === 'function') {
      // Adding the second element, need to change to array.
      existing = events[type] =
          prepend ? [listener, existing] : [existing, listener];
    } else {
      // If we've already got an array, just append.
      if (prepend) {
        existing.unshift(listener);
      } else {
        existing.push(listener);
      }
    }

    // Check for listener leak
    if (!existing.warned) {
      m = $getMaxListeners(target);
      if (m && m > 0 && existing.length > m) {
        existing.warned = true;
        var w = new Error('Possible EventEmitter memory leak detected. ' +
            existing.length + ' "' + String(type) + '" listeners ' +
            'added. Use emitter.setMaxListeners() to ' +
            'increase limit.');
        w.name = 'MaxListenersExceededWarning';
        w.emitter = target;
        w.type = type;
        w.count = existing.length;
        if (typeof console === 'object' && console.warn) {
          console.warn('%s: %s', w.name, w.message);
        }
      }
    }
  }

  return target;
}

EventEmitter.prototype.addListener = function addListener(type, listener) {
  return _addListener(this, type, listener, false);
};

EventEmitter.prototype.on = EventEmitter.prototype.addListener;

EventEmitter.prototype.prependListener =
    function prependListener(type, listener) {
      return _addListener(this, type, listener, true);
    };

function onceWrapper() {
  if (!this.fired) {
    this.target.removeListener(this.type, this.wrapFn);
    this.fired = true;
    switch (arguments.length) {
      case 0:
        return this.listener.call(this.target);
      case 1:
        return this.listener.call(this.target, arguments[0]);
      case 2:
        return this.listener.call(this.target, arguments[0], arguments[1]);
      case 3:
        return this.listener.call(this.target, arguments[0], arguments[1],
            arguments[2]);
      default:
        var args = new Array(arguments.length);
        for (var i = 0; i < args.length; ++i)
          args[i] = arguments[i];
        this.listener.apply(this.target, args);
    }
  }
}

function _onceWrap(target, type, listener) {
  var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener };
  var wrapped = bind.call(onceWrapper, state);
  wrapped.listener = listener;
  state.wrapFn = wrapped;
  return wrapped;
}

EventEmitter.prototype.once = function once(type, listener) {
  if (typeof listener !== 'function')
    throw new TypeError('"listener" argument must be a function');
  this.on(type, _onceWrap(this, type, listener));
  return this;
};

EventEmitter.prototype.prependOnceListener =
    function prependOnceListener(type, listener) {
      if (typeof listener !== 'function')
        throw new TypeError('"listener" argument must be a function');
      this.prependListener(type, _onceWrap(this, type, listener));
      return this;
    };

// Emits a 'removeListener' event if and only if the listener was removed.
EventEmitter.prototype.removeListener =
    function removeListener(type, listener) {
      var list, events, position, i, originalListener;

      if (typeof listener !== 'function')
        throw new TypeError('"listener" argument must be a function');

      events = this._events;
      if (!events)
        return this;

      list = events[type];
      if (!list)
        return this;

      if (list === listener || list.listener === listener) {
        if (--this._eventsCount === 0)
          this._events = objectCreate(null);
        else {
          delete events[type];
          if (events.removeListener)
            this.emit('removeListener', type, list.listener || listener);
        }
      } else if (typeof list !== 'function') {
        position = -1;

        for (i = list.length - 1; i >= 0; i--) {
          if (list[i] === listener || list[i].listener === listener) {
            originalListener = list[i].listener;
            position = i;
            break;
          }
        }

        if (position < 0)
          return this;

        if (position === 0)
          list.shift();
        else
          spliceOne(list, position);

        if (list.length === 1)
          events[type] = list[0];

        if (events.removeListener)
          this.emit('removeListener', type, originalListener || listener);
      }

      return this;
    };

EventEmitter.prototype.removeAllListeners =
    function removeAllListeners(type) {
      var listeners, events, i;

      events = this._events;
      if (!events)
        return this;

      // not listening for removeListener, no need to emit
      if (!events.removeListener) {
        if (arguments.length === 0) {
          this._events = objectCreate(null);
          this._eventsCount = 0;
        } else if (events[type]) {
          if (--this._eventsCount === 0)
            this._events = objectCreate(null);
          else
            delete events[type];
        }
        return this;
      }

      // emit removeListener for all listeners on all events
      if (arguments.length === 0) {
        var keys = objectKeys(events);
        var key;
        for (i = 0; i < keys.length; ++i) {
          key = keys[i];
          if (key === 'removeListener') continue;
          this.removeAllListeners(key);
        }
        this.removeAllListeners('removeListener');
        this._events = objectCreate(null);
        this._eventsCount = 0;
        return this;
      }

      listeners = events[type];

      if (typeof listeners === 'function') {
        this.removeListener(type, listeners);
      } else if (listeners) {
        // LIFO order
        for (i = listeners.length - 1; i >= 0; i--) {
          this.removeListener(type, listeners[i]);
        }
      }

      return this;
    };

function _listeners(target, type, unwrap) {
  var events = target._events;

  if (!events)
    return [];

  var evlistener = events[type];
  if (!evlistener)
    return [];

  if (typeof evlistener === 'function')
    return unwrap ? [evlistener.listener || evlistener] : [evlistener];

  return unwrap ? unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);
}

EventEmitter.prototype.listeners = function listeners(type) {
  return _listeners(this, type, true);
};

EventEmitter.prototype.rawListeners = function rawListeners(type) {
  return _listeners(this, type, false);
};

EventEmitter.listenerCount = function(emitter, type) {
  if (typeof emitter.listenerCount === 'function') {
    return emitter.listenerCount(type);
  } else {
    return listenerCount.call(emitter, type);
  }
};

EventEmitter.prototype.listenerCount = listenerCount;
function listenerCount(type) {
  var events = this._events;

  if (events) {
    var evlistener = events[type];

    if (typeof evlistener === 'function') {
      return 1;
    } else if (evlistener) {
      return evlistener.length;
    }
  }

  return 0;
}

EventEmitter.prototype.eventNames = function eventNames() {
  return this._eventsCount > 0 ? Reflect.ownKeys(this._events) : [];
};

// About 1.5x faster than the two-arg version of Array#splice().
function spliceOne(list, index) {
  for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1)
    list[i] = list[k];
  list.pop();
}

function arrayClone(arr, n) {
  var copy = new Array(n);
  for (var i = 0; i < n; ++i)
    copy[i] = arr[i];
  return copy;
}

function unwrapListeners(arr) {
  var ret = new Array(arr.length);
  for (var i = 0; i < ret.length; ++i) {
    ret[i] = arr[i].listener || arr[i];
  }
  return ret;
}

function objectCreatePolyfill(proto) {
  var F = function() {};
  F.prototype = proto;
  return new F;
}
function objectKeysPolyfill(obj) {
  var keys = [];
  for (var k in obj) if (Object.prototype.hasOwnProperty.call(obj, k)) {
    keys.push(k);
  }
  return k;
}
function functionBindPolyfill(context) {
  var fn = this;
  return function () {
    return fn.apply(context, arguments);
  };
}

},{}],206:[function(require,module,exports){
var Buffer = require('safe-buffer').Buffer
var MD5 = require('md5.js')

/* eslint-disable camelcase */
function EVP_BytesToKey (password, salt, keyBits, ivLen) {
  if (!Buffer.isBuffer(password)) password = Buffer.from(password, 'binary')
  if (salt) {
    if (!Buffer.isBuffer(salt)) salt = Buffer.from(salt, 'binary')
    if (salt.length !== 8) throw new RangeError('salt should be Buffer with 8 byte length')
  }

  var keyLen = keyBits / 8
  var key = Buffer.alloc(keyLen)
  var iv = Buffer.alloc(ivLen || 0)
  var tmp = Buffer.alloc(0)

  while (keyLen > 0 || ivLen > 0) {
    var hash = new MD5()
    hash.update(tmp)
    hash.update(password)
    if (salt) hash.update(salt)
    tmp = hash.digest()

    var used = 0

    if (keyLen > 0) {
      var keyStart = key.length - keyLen
      used = Math.min(keyLen, tmp.length)
      tmp.copy(key, keyStart, 0, used)
      keyLen -= used
    }

    if (used < tmp.length && ivLen > 0) {
      var ivStart = iv.length - ivLen
      var length = Math.min(ivLen, tmp.length - used)
      tmp.copy(iv, ivStart, used, used + length)
      ivLen -= length
    }
  }

  tmp.fill(0)
  return { key: key, iv: iv }
}

module.exports = EVP_BytesToKey

},{"md5.js":285,"safe-buffer":326}],207:[function(require,module,exports){
(function (Buffer){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

Object.defineProperty(exports, "__esModule", {
  value: true
});

var stream_1 = require("stream");

var RowFormatter_1 = require("./formatter/RowFormatter");

var CsvFormatterStream =
/*#__PURE__*/
function (_stream_1$Transform) {
  _inherits(CsvFormatterStream, _stream_1$Transform);

  function CsvFormatterStream(formatterOptions) {
    var _this;

    _classCallCheck(this, CsvFormatterStream);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(CsvFormatterStream).call(this, {
      objectMode: formatterOptions.objectMode
    }));
    _this.hasWrittenBOM = false;
    _this.formatterOptions = formatterOptions;
    _this.rowFormatter = new RowFormatter_1.default(formatterOptions); // if writeBOM is false then set to true
    // if writeBOM is true then set to false by default so it is written out

    _this.hasWrittenBOM = !formatterOptions.writeBOM;
    return _this;
  }

  _createClass(CsvFormatterStream, [{
    key: "transform",
    value: function transform(transformFunction) {
      this.rowFormatter.rowTransform = transformFunction;
      return this;
    }
  }, {
    key: "_transform",
    value: function _transform(row, encoding, cb) {
      var _this2 = this;

      var cbCalled = false;

      try {
        if (!this.hasWrittenBOM) {
          this.push(this.formatterOptions.BOM);
          this.hasWrittenBOM = true;
        }

        this.rowFormatter.format(row, function (err, rows) {
          if (err) {
            cbCalled = true;
            return cb(err);
          }

          if (rows) {
            rows.forEach(function (r) {
              _this2.push(Buffer.from(r, 'utf8'));
            });
          }

          cbCalled = true;
          return cb();
        });
      } catch (e) {
        if (cbCalled) {
          throw e;
        }

        cb(e);
      }
    }
  }, {
    key: "_flush",
    value: function _flush(cb) {
      if (this.formatterOptions.includeEndRowDelimiter) {
        this.push(this.formatterOptions.rowDelimiter);
      }

      cb();
    }
  }]);

  return CsvFormatterStream;
}(stream_1.Transform);

exports.default = CsvFormatterStream;

}).call(this,require("buffer").Buffer)
},{"./formatter/RowFormatter":210,"buffer":168,"stream":337}],208:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

Object.defineProperty(exports, "__esModule", {
  value: true
});

var FormatterOptions = function FormatterOptions() {
  var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

  _classCallCheck(this, FormatterOptions);

  this.objectMode = true;
  this.delimiter = ',';
  this.rowDelimiter = '\n';
  this.quote = '"';
  this.escape = this.quote;
  this.quoteColumns = false;
  this.quoteHeaders = this.quoteColumns;
  this.headers = null;
  this.includeEndRowDelimiter = false;
  this.transform = null;
  this.writeBOM = false;
  this.BOM = "\uFEFF";

  if (opts) {
    Object.assign(this, opts);

    if (typeof opts.quoteHeaders === 'undefined') {
      this.quoteHeaders = this.quoteColumns;
    }

    if (opts.quote === true) {
      this.quote = '"';
    } else if (opts.quote === false) {
      this.quote = '';
    }

    if (typeof opts.escape !== 'string') {
      this.escape = this.quote;
    }
  }

  this.shouldWriteHeaders = !!this.headers;
  this.headers = Array.isArray(this.headers) ? this.headers : null;
  this.escapedQuote = "".concat(this.escape).concat(this.quote);
};

exports.FormatterOptions = FormatterOptions;

},{}],209:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

Object.defineProperty(exports, "__esModule", {
  value: true
});

var lodash_1 = require("lodash");

var FieldFormatter =
/*#__PURE__*/
function () {
  function FieldFormatter(formatterOptions) {
    _classCallCheck(this, FieldFormatter);

    this._headers = null;
    this.formatterOptions = formatterOptions;

    if (formatterOptions.headers !== null) {
      this.headers = formatterOptions.headers;
    }

    this.REPLACE_REGEXP = new RegExp(formatterOptions.quote, 'g');
    var escapePattern = "[".concat(formatterOptions.delimiter).concat(lodash_1.escapeRegExp(formatterOptions.rowDelimiter), "']");
    this.ESCAPE_REGEXP = new RegExp(escapePattern);
  }

  _createClass(FieldFormatter, [{
    key: "shouldQuote",
    value: function shouldQuote(fieldIndex, isHeader) {
      var quoteConfig = isHeader ? this.formatterOptions.quoteHeaders : this.formatterOptions.quoteColumns;

      if (lodash_1.isBoolean(quoteConfig)) {
        return quoteConfig;
      }

      if (Array.isArray(quoteConfig)) {
        return quoteConfig[fieldIndex];
      }

      if (this._headers !== null) {
        return quoteConfig[this._headers[fieldIndex]];
      }

      return false;
    }
  }, {
    key: "format",
    value: function format(field, fieldIndex, isHeader) {
      var preparedField = "".concat(lodash_1.isNil(field) ? '' : field).replace(/\0/g, '');
      var formatterOptions = this.formatterOptions;

      if (formatterOptions.quote !== '') {
        var shouldEscape = preparedField.indexOf(formatterOptions.quote) !== -1;

        if (shouldEscape) {
          return this.quoteField(preparedField.replace(this.REPLACE_REGEXP, formatterOptions.escapedQuote));
        }
      }

      var hasEscapeCharacters = preparedField.search(this.ESCAPE_REGEXP) !== -1;

      if (hasEscapeCharacters || this.shouldQuote(fieldIndex, isHeader)) {
        return this.quoteField(preparedField);
      }

      return preparedField;
    }
  }, {
    key: "quoteField",
    value: function quoteField(field) {
      var quote = this.formatterOptions.quote;
      return "".concat(quote).concat(field).concat(quote);
    }
  }, {
    key: "headers",
    set: function set(headers) {
      this._headers = headers;
    }
  }]);

  return FieldFormatter;
}();

exports.default = FieldFormatter;

},{"lodash":284}],210:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

Object.defineProperty(exports, "__esModule", {
  value: true
});

var lodash_1 = require("lodash");

var FieldFormatter_1 = require("./FieldFormatter");

var RowFormatter =
/*#__PURE__*/
function () {
  function RowFormatter(formatterOptions) {
    _classCallCheck(this, RowFormatter);

    this.rowCount = 0;
    this.formatterOptions = formatterOptions;
    this.fieldFormatter = new FieldFormatter_1.default(formatterOptions);
    this._rowTransform = null;
    this.headers = formatterOptions.headers;
    this.shouldWriteHeaders = formatterOptions.shouldWriteHeaders;
    this.hasWrittenHeaders = false;

    if (this.headers !== null) {
      this.fieldFormatter.headers = this.headers;
    }

    if (formatterOptions.transform !== null) {
      this.rowTransform = formatterOptions.transform;
    }
  }

  _createClass(RowFormatter, [{
    key: "format",
    value: function format(row, cb) {
      var _this = this;

      this.callTransformer(row, function (err, transformedRow) {
        if (err) {
          return cb(err);
        }

        if (!row) {
          return cb(null);
        }

        var rows = [];

        if (transformedRow) {
          var _this$checkHeaders = _this.checkHeaders(transformedRow),
              shouldFormatColumns = _this$checkHeaders.shouldFormatColumns,
              headers = _this$checkHeaders.headers;

          if (_this.shouldWriteHeaders && headers && !_this.hasWrittenHeaders) {
            rows.push(_this.formatColumns(headers, true));
            _this.hasWrittenHeaders = true;
          }

          if (shouldFormatColumns) {
            var columns = _this.gatherColumns(transformedRow);

            rows.push(_this.formatColumns(columns, false));
          }
        }

        return cb(null, rows);
      });
    } // check if we need to write header return true if we should also write a row
    // could be false if headers is true and the header row(first item) is passed in

  }, {
    key: "checkHeaders",
    value: function checkHeaders(row) {
      if (this.headers) {
        // either the headers were provided by the user or we have already gathered them.
        return {
          shouldFormatColumns: true,
          headers: this.headers
        };
      }

      var headers = RowFormatter.gatherHeaders(row);
      this.headers = headers;
      this.fieldFormatter.headers = headers;

      if (!this.shouldWriteHeaders) {
        // if we are not supposed to write the headers then
        // alwyas format the columns
        return {
          shouldFormatColumns: true,
          headers: null
        };
      } // if the row is equal to headers dont format


      return {
        shouldFormatColumns: !lodash_1.isEqual(headers, row),
        headers: headers
      };
    }
  }, {
    key: "gatherColumns",
    value: function gatherColumns(row) {
      if (this.headers === null) {
        throw new Error('Headers is currently null');
      }

      if (!Array.isArray(row)) {
        return this.headers.map(function (header) {
          return row[header];
        });
      }

      if (RowFormatter.isHashArray(row)) {
        return this.headers.map(function (header, i) {
          var col = row[i];

          if (col) {
            return col[1];
          }

          return '';
        });
      }

      return this.headers.map(function (header, i) {
        return row[i];
      });
    }
  }, {
    key: "callTransformer",
    value: function callTransformer(row, cb) {
      if (!this._rowTransform) {
        return cb(null, row);
      }

      return this._rowTransform(row, cb);
    }
  }, {
    key: "formatColumns",
    value: function formatColumns(columns, isHeadersRow) {
      var _this2 = this;

      var formattedCols = columns.map(function (field, i) {
        return _this2.fieldFormatter.format(field, i, isHeadersRow);
      }).join(this.formatterOptions.delimiter);
      var rowCount = this.rowCount;
      this.rowCount += 1;

      if (rowCount) {
        return [this.formatterOptions.rowDelimiter, formattedCols].join('');
      }

      return formattedCols;
    }
  }, {
    key: "rowTransform",
    set: function set(transformFunction) {
      if (!lodash_1.isFunction(transformFunction)) {
        throw new TypeError('The transform should be a function');
      }

      this._rowTransform = RowFormatter.createTransform(transformFunction);
    }
  }], [{
    key: "isHashArray",
    value: function isHashArray(row) {
      if (Array.isArray(row)) {
        return Array.isArray(row[0]) && row[0].length === 2;
      }

      return false;
    } // get headers from a row item

  }, {
    key: "gatherHeaders",
    value: function gatherHeaders(row) {
      if (RowFormatter.isHashArray(row)) {
        // lets assume a multi-dimesional array with item 0 being the header
        return row.map(function (it) {
          return it[0];
        });
      }

      if (Array.isArray(row)) {
        return row;
      }

      return Object.keys(row);
    }
  }, {
    key: "createTransform",
    value: function createTransform(transformFunction) {
      var isSync = transformFunction.length === 1;

      if (isSync) {
        return function (row, cb) {
          var transformedRow = null;

          try {
            transformedRow = transformFunction(row);
          } catch (e) {
            return cb(e);
          }

          return cb(null, transformedRow);
        };
      }

      return function (row, cb) {
        transformFunction(row, cb);
      };
    }
  }]);

  return RowFormatter;
}();

exports.default = RowFormatter;

},{"./FieldFormatter":209,"lodash":284}],211:[function(require,module,exports){
(function (Buffer){
"use strict";

function __export(m) {
  for (var p in m) {
    if (!exports.hasOwnProperty(p)) exports[p] = m[p];
  }
}

Object.defineProperty(exports, "__esModule", {
  value: true
});

var util_1 = require("util");

var stream_1 = require("stream");

var fs = require("fs");

var FormatterOptions_1 = require("./FormatterOptions");

var CsvFormatterStream_1 = require("./CsvFormatterStream");

var CsvFormatterStream_2 = require("./CsvFormatterStream");

exports.CsvFormatterStream = CsvFormatterStream_2.default;

__export(require("./FormatterOptions"));

exports.format = function (options) {
  return new CsvFormatterStream_1.default(new FormatterOptions_1.FormatterOptions(options));
};

exports.write = function (rows, options) {
  var csvStream = exports.format(options);
  var promiseWrite = util_1.promisify(function (row, cb) {
    csvStream.write(row, undefined, cb);
  });
  rows.reduce(function (prev, row) {
    return prev.then(function () {
      return promiseWrite(row);
    });
  }, Promise.resolve()).then(function () {
    return csvStream.end();
  }).catch(function (err) {
    csvStream.emit('error', err);
  });
  return csvStream;
};

exports.writeToStream = function (ws, rows, options) {
  return exports.write(rows, options).pipe(ws);
};

exports.writeToBuffer = function (rows) {
  var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
  var buffers = [];
  var ws = new stream_1.Writable({
    write: function write(data, enc, writeCb) {
      buffers.push(data);
      writeCb();
    }
  });
  return new Promise(function (res, rej) {
    ws.on('error', rej).on('finish', function () {
      return res(Buffer.concat(buffers));
    });
    exports.write(rows, opts).pipe(ws);
  });
};

exports.writeToString = function (rows, options) {
  return exports.writeToBuffer(rows, options).then(function (buffer) {
    return buffer.toString();
  });
};

exports.writeToPath = function (path, rows, options) {
  var stream = fs.createWriteStream(path, {
    encoding: 'utf8'
  });
  return exports.write(rows, options).pipe(stream);
};

}).call(this,require("buffer").Buffer)
},{"./CsvFormatterStream":207,"./FormatterOptions":208,"buffer":168,"fs":166,"stream":337,"util":356}],212:[function(require,module,exports){
"use strict";
/**
 * @projectName fast-csv
 * @github https://github.com/C2FO/fast-csv
 * @includeDoc [Change Log] ../History.md
 * @header [../README.md]
 */

var util_1 = require("util");

var formatter_1 = require("./formatter");

var parser_1 = require("./parser");

var csv = {
  parse: parser_1.parse,
  parseString: parser_1.parseString,
  fromString: util_1.deprecate(parser_1.parseString, 'csv.fromString has been deprecated in favor of csv.parseString'),
  parseStream: parser_1.parseStream,
  fromStream: util_1.deprecate(parser_1.parseStream, 'csv.fromStream has been deprecated in favor of csv.parseStream'),
  parseFile: parser_1.parseFile,
  fromPath: util_1.deprecate(parser_1.parseFile, 'csv.fromPath has been deprecated in favor of csv.parseFile'),
  format: formatter_1.format,
  write: formatter_1.write,
  writeToStream: formatter_1.writeToStream,
  writeToBuffer: formatter_1.writeToBuffer,
  writeToString: formatter_1.writeToString,
  writeToPath: formatter_1.writeToPath
};
module.exports = csv;

},{"./formatter":211,"./parser":215,"util":356}],213:[function(require,module,exports){
(function (setImmediate){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _get(target, property, receiver) { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(receiver); } return desc.value; }; } return _get(target, property, receiver || target); }

function _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

Object.defineProperty(exports, "__esModule", {
  value: true
});

var string_decoder_1 = require("string_decoder");

var stream_1 = require("stream");

var transforms_1 = require("./transforms");

var parser_1 = require("./parser");

var CsvParserStream =
/*#__PURE__*/
function (_stream_1$Transform) {
  _inherits(CsvParserStream, _stream_1$Transform);

  function CsvParserStream(parserOptions) {
    var _this;

    _classCallCheck(this, CsvParserStream);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(CsvParserStream).call(this, {
      objectMode: parserOptions.objectMode
    }));
    _this.lines = '';
    _this.rowCount = 0;
    _this.endEmitted = false;
    _this.parserOptions = parserOptions;
    _this.parser = new parser_1.Parser(parserOptions);
    _this.headerTransformer = new transforms_1.HeaderTransformer(parserOptions);
    _this.decoder = new string_decoder_1.StringDecoder(parserOptions.encoding);
    _this.rowTransformerValidator = new transforms_1.RowTransformerValidator();
    return _this;
  }

  _createClass(CsvParserStream, [{
    key: "transform",
    value: function transform(transformFunction) {
      this.rowTransformerValidator.rowTransform = transformFunction;
      return this;
    }
  }, {
    key: "validate",
    value: function validate(validateFunction) {
      this.rowTransformerValidator.rowValidator = validateFunction;
      return this;
    } // eslint-disable-next-line @typescript-eslint/no-explicit-any

  }, {
    key: "emit",
    value: function emit(event) {
      var _get2;

      if (event === 'end') {
        if (!this.endEmitted) {
          this.endEmitted = true;

          _get(_getPrototypeOf(CsvParserStream.prototype), "emit", this).call(this, 'end', this.rowCount);
        }

        return false;
      }

      for (var _len = arguments.length, rest = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
        rest[_key - 1] = arguments[_key];
      }

      return (_get2 = _get(_getPrototypeOf(CsvParserStream.prototype), "emit", this)).call.apply(_get2, [this, event].concat(rest));
    }
  }, {
    key: "_transform",
    value: function _transform(data, encoding, done) {
      try {
        var lines = this.lines;
        var newLine = lines + this.decoder.write(data);
        var rows = this.parse(newLine, true);
        this.processRows(rows, done);
      } catch (e) {
        done(e);
      }
    }
  }, {
    key: "_flush",
    value: function _flush(done) {
      try {
        var newLine = this.lines + this.decoder.end();
        var rows = this.parse(newLine, false);
        this.processRows(rows, done);
      } catch (e) {
        done(e);
      }
    }
  }, {
    key: "parse",
    value: function parse(data, hasMoreData) {
      if (!data) {
        return [];
      }

      var _this$parser$parse = this.parser.parse(data, hasMoreData),
          line = _this$parser$parse.line,
          rows = _this$parser$parse.rows;

      this.lines = line;
      return rows;
    }
  }, {
    key: "processRows",
    value: function processRows(rows, cb) {
      var _this2 = this;

      var rowsLength = rows.length;

      var iterate = function iterate(i) {
        if (i >= rowsLength) {
          return cb();
        }

        var row = rows[i];
        _this2.rowCount += 1;
        var nextRowCount = _this2.rowCount;
        return _this2.transformRow(row, function (err, transformResult) {
          if (err) {
            _this2.rowCount -= 1;
            return cb(err);
          }

          if (!transformResult) {
            return cb(new Error('expected transform result'));
          }

          if (!transformResult.isValid) {
            _this2.emit('data-invalid', transformResult.row, nextRowCount, transformResult.reason);
          } else if (!transformResult.row) {
            _this2.rowCount -= 1;
          } else if (!_this2.parserOptions.objectMode) {
            _this2.push(JSON.stringify(transformResult.row));
          } else {
            _this2.push(transformResult.row);
          }

          if (i % 100 === 0) {
            // incase the transform are sync insert a next tick to prevent stack overflow
            setImmediate(function () {
              return iterate(i + 1);
            });
            return undefined;
          }

          return iterate(i + 1);
        });
      };

      iterate(0);
    }
  }, {
    key: "transformRow",
    value: function transformRow(parsedRow, cb) {
      var _this3 = this;

      try {
        this.headerTransformer.transform(parsedRow, function (err, withHeaders) {
          if (err) {
            return cb(err);
          }

          if (!withHeaders) {
            return cb(new Error('Expected result from header transform'));
          }

          if (!withHeaders.isValid) {
            return cb(null, {
              isValid: false,
              row: parsedRow
            });
          }

          if (withHeaders.row) {
            return _this3.rowTransformerValidator.transformAndValidate(withHeaders.row, cb);
          }

          return cb(null, {
            row: null,
            isValid: true
          });
        });
      } catch (e) {
        cb(e);
      }
    }
  }]);

  return CsvParserStream;
}(stream_1.Transform);

exports.default = CsvParserStream;

}).call(this,require("timers").setImmediate)
},{"./parser":224,"./transforms":227,"stream":337,"string_decoder":351,"timers":352}],214:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

Object.defineProperty(exports, "__esModule", {
  value: true
});

var lodash_1 = require("lodash");

var ParserOptions = function ParserOptions(opts) {
  _classCallCheck(this, ParserOptions);

  this.objectMode = true;
  this.delimiter = ',';
  this.ignoreEmpty = false;
  this.quote = '"';
  this.escape = null;
  this.escapeChar = this.quote;
  this.comment = null;
  this.supportsComments = false;
  this.ltrim = false;
  this.rtrim = false;
  this.trim = false;
  this.headers = null;
  this.renameHeaders = false;
  this.strictColumnHandling = false;
  this.discardUnmappedColumns = false;
  this.carriageReturn = '\r';
  this.encoding = 'utf8';
  Object.assign(this, opts || {});

  if (this.delimiter.length > 1) {
    throw new Error('delimiter option must be one character long');
  }

  this.escapedDelimiter = lodash_1.escapeRegExp(this.delimiter);
  this.escapeChar = lodash_1.isString(this.escape) ? this.escape : this.quote;
  this.supportsComments = !lodash_1.isNil(this.comment);
  this.NEXT_TOKEN_REGEXP = new RegExp("([^\\s]|\\r\\n|\\n|\\r|".concat(this.escapedDelimiter, ")"));
};

exports.ParserOptions = ParserOptions;

},{"lodash":284}],215:[function(require,module,exports){
"use strict";

function __export(m) {
  for (var p in m) {
    if (!exports.hasOwnProperty(p)) exports[p] = m[p];
  }
}

Object.defineProperty(exports, "__esModule", {
  value: true
});

var fs = require("fs");

var stream_1 = require("stream");

var ParserOptions_1 = require("./ParserOptions");

var CsvParserStream_1 = require("./CsvParserStream");

var CsvParserStream_2 = require("./CsvParserStream");

exports.CsvParserStream = CsvParserStream_2.default;

__export(require("./types"));

__export(require("./ParserOptions"));

exports.parse = function (args) {
  return new CsvParserStream_1.default(new ParserOptions_1.ParserOptions(args));
};

exports.parseStream = function (stream, options) {
  return stream.pipe(new CsvParserStream_1.default(new ParserOptions_1.ParserOptions(options)));
};

exports.parseFile = function (location) {
  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
  return fs.createReadStream(location).pipe(new CsvParserStream_1.default(new ParserOptions_1.ParserOptions(options)));
};

exports.parseString = function (string, options) {
  var rs = new stream_1.Readable();
  rs.push(string);
  rs.push(null);
  return rs.pipe(new CsvParserStream_1.default(new ParserOptions_1.ParserOptions(options)));
};

},{"./CsvParserStream":213,"./ParserOptions":214,"./types":228,"fs":166,"stream":337}],216:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

Object.defineProperty(exports, "__esModule", {
  value: true
});

var Scanner_1 = require("./Scanner");

var RowParser_1 = require("./RowParser");

var EMPTY_ROW_REGEXP = /^\s*(?:''|"")?\s*(?:,\s*(?:''|"")?\s*)*$/;

var Parser =
/*#__PURE__*/
function () {
  _createClass(Parser, null, [{
    key: "removeBOM",
    value: function removeBOM(line) {
      // Catches EFBBBF (UTF-8 BOM) because the buffer-to-string
      // conversion translates it to FEFF (UTF-16 BOM)
      if (line && line.charCodeAt(0) === 0xFEFF) {
        return line.slice(1);
      }

      return line;
    }
  }]);

  function Parser(parserOptions) {
    _classCallCheck(this, Parser);

    this.parserOptions = parserOptions;
    this.rowParser = new RowParser_1.default(this.parserOptions);
  }

  _createClass(Parser, [{
    key: "parse",
    value: function parse(line, hasMoreData) {
      var scanner = new Scanner_1.Scanner({
        line: Parser.removeBOM(line),
        parserOptions: this.parserOptions,
        hasMoreData: hasMoreData
      });

      if (this.parserOptions.supportsComments) {
        return this.parseWithComments(scanner);
      }

      return this.parseWithoutComments(scanner);
    }
  }, {
    key: "parseWithoutComments",
    value: function parseWithoutComments(scanner) {
      var rows = [];
      var shouldContinue = true;

      while (shouldContinue) {
        shouldContinue = this.parseRow(scanner, rows);
      }

      return {
        line: scanner.line,
        rows: rows
      };
    }
  }, {
    key: "parseWithComments",
    value: function parseWithComments(scanner) {
      var parserOptions = this.parserOptions;
      var rows = [];

      for (var nextToken = scanner.nextCharacterToken; nextToken !== null; nextToken = scanner.nextCharacterToken) {
        if (Scanner_1.Token.isTokenComment(nextToken, parserOptions)) {
          var cursor = scanner.advancePastLine();

          if (cursor === null) {
            return {
              line: scanner.lineFromCursor,
              rows: rows
            };
          }

          if (!scanner.hasMoreCharacters) {
            return {
              line: scanner.lineFromCursor,
              rows: rows
            };
          }

          scanner.truncateToCursor();
        } else if (!this.parseRow(scanner, rows)) {
          break;
        }
      }

      return {
        line: scanner.line,
        rows: rows
      };
    }
  }, {
    key: "parseRow",
    value: function parseRow(scanner, rows) {
      var nextToken = scanner.nextNonSpaceToken;

      if (!nextToken) {
        return false;
      }

      var row = this.rowParser.parse(scanner);

      if (row === null) {
        return false;
      }

      if (this.parserOptions.ignoreEmpty && EMPTY_ROW_REGEXP.test(row.join(''))) {
        return true;
      }

      rows.push(row);
      return true;
    }
  }]);

  return Parser;
}();

exports.default = Parser;

},{"./RowParser":217,"./Scanner":218}],217:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

Object.defineProperty(exports, "__esModule", {
  value: true
});

var Scanner_1 = require("./Scanner");

var column_1 = require("./column");

var _Scanner_1$Token = Scanner_1.Token,
    isTokenRowDelimiter = _Scanner_1$Token.isTokenRowDelimiter,
    isTokenCarriageReturn = _Scanner_1$Token.isTokenCarriageReturn,
    isTokenDelimiter = _Scanner_1$Token.isTokenDelimiter;

var RowParser =
/*#__PURE__*/
function () {
  function RowParser(parserOptions) {
    _classCallCheck(this, RowParser);

    this.parserOptions = parserOptions;
    this.columnParser = new column_1.ColumnParser(parserOptions);
  }

  _createClass(RowParser, [{
    key: "parse",
    value: function parse(scanner) {
      var parserOptions = this.parserOptions;
      var hasMoreData = scanner.hasMoreData;
      var currentScanner = scanner;
      var columns = [];
      var currentToken = this.getStartToken(currentScanner, columns);

      while (currentToken) {
        if (isTokenRowDelimiter(currentToken)) {
          currentScanner.advancePastToken(currentToken); // if ends with CR and there is more data, keep unparsed due to possible
          // coming LF in CRLF

          if (!currentScanner.hasMoreCharacters && isTokenCarriageReturn(currentToken, parserOptions) && hasMoreData) {
            return null;
          }

          currentScanner.truncateToCursor();
          return columns;
        }

        if (!this.shouldSkipColumnParse(currentScanner, currentToken, columns)) {
          var item = this.columnParser.parse(currentScanner);

          if (item === null) {
            return null;
          }

          columns.push(item);
        }

        currentToken = currentScanner.nextNonSpaceToken;
      }

      if (!hasMoreData) {
        currentScanner.truncateToCursor();
        return columns;
      }

      return null;
    }
  }, {
    key: "getStartToken",
    value: function getStartToken(scanner, columns) {
      var currentToken = scanner.nextNonSpaceToken;

      if (currentToken !== null && isTokenDelimiter(currentToken, this.parserOptions)) {
        columns.push('');
        return scanner.nextNonSpaceToken;
      }

      return currentToken;
    }
  }, {
    key: "shouldSkipColumnParse",
    value: function shouldSkipColumnParse(scanner, currentToken, columns) {
      var parserOptions = this.parserOptions;

      if (isTokenDelimiter(currentToken, parserOptions)) {
        scanner.advancePastToken(currentToken); // if the delimiter is at the end of a line

        var nextToken = scanner.nextCharacterToken;

        if (!scanner.hasMoreCharacters || nextToken !== null && isTokenRowDelimiter(nextToken)) {
          columns.push('');
          return true;
        }

        if (nextToken !== null && isTokenDelimiter(nextToken, parserOptions)) {
          columns.push('');
          return true;
        }
      }

      return false;
    }
  }]);

  return RowParser;
}();

exports.default = RowParser;

},{"./Scanner":218,"./column":223}],218:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

Object.defineProperty(exports, "__esModule", {
  value: true
});
var ROW_DELIMITER = /((?:\r\n)|\n|\r)/;

var Token =
/*#__PURE__*/
function () {
  _createClass(Token, null, [{
    key: "isTokenRowDelimiter",
    value: function isTokenRowDelimiter(token) {
      var content = token.token;
      return content === '\r' || content === '\n' || content === '\r\n';
    }
  }, {
    key: "isTokenCarriageReturn",
    value: function isTokenCarriageReturn(token, parserOptions) {
      return token.token === parserOptions.carriageReturn;
    }
  }, {
    key: "isTokenComment",
    value: function isTokenComment(token, parserOptions) {
      return parserOptions.supportsComments && !!token && token.token === parserOptions.comment;
    }
  }, {
    key: "isTokenEscapeCharacter",
    value: function isTokenEscapeCharacter(token, parserOptions) {
      return token.token === parserOptions.escapeChar;
    }
  }, {
    key: "isTokenQuote",
    value: function isTokenQuote(token, parserOptions) {
      return token.token === parserOptions.quote;
    }
  }, {
    key: "isTokenDelimiter",
    value: function isTokenDelimiter(token, parserOptions) {
      return token.token === parserOptions.delimiter;
    }
  }]);

  function Token(tokenArgs) {
    _classCallCheck(this, Token);

    this.token = tokenArgs.token;
    this.startCursor = tokenArgs.startCursor;
    this.endCursor = tokenArgs.endCursor;
  }

  return Token;
}();

exports.Token = Token;

var Scanner =
/*#__PURE__*/
function () {
  function Scanner(args) {
    _classCallCheck(this, Scanner);

    this.cursor = 0;
    this.line = args.line;
    this.lineLength = this.line.length;
    this.parserOptions = args.parserOptions;
    this.hasMoreData = args.hasMoreData;
    this.cursor = args.cursor || 0;
  }

  _createClass(Scanner, [{
    key: "advancePastLine",
    value: function advancePastLine() {
      var match = this.lineFromCursor.match(ROW_DELIMITER);

      if (!match) {
        if (this.hasMoreData) {
          return null;
        }

        this.cursor = this.lineLength;
        return this;
      }

      this.cursor += (match.index || 0) + match[0].length;
      return this;
    }
  }, {
    key: "advanceTo",
    value: function advanceTo(cursor) {
      this.cursor = cursor;
      return this;
    }
  }, {
    key: "advanceToToken",
    value: function advanceToToken(token) {
      this.cursor = token.startCursor;
      return this;
    }
  }, {
    key: "advancePastToken",
    value: function advancePastToken(token) {
      this.cursor = token.endCursor + 1;
      return this;
    }
  }, {
    key: "truncateToCursor",
    value: function truncateToCursor() {
      this.line = this.lineFromCursor;
      this.lineLength = this.line.length;
      this.cursor = 0;
      return this;
    }
  }, {
    key: "hasMoreCharacters",
    get: function get() {
      return this.lineLength > this.cursor;
    }
  }, {
    key: "nextNonSpaceToken",
    get: function get() {
      var lineFromCursor = this.lineFromCursor;
      var regex = this.parserOptions.NEXT_TOKEN_REGEXP;

      if (lineFromCursor.search(regex) === -1) {
        return null;
      }

      var match = lineFromCursor.match(regex);

      if (match == null) {
        return null;
      }

      var token = match[1];
      var startCursor = this.cursor + (match.index || 0);
      return new Token({
        token: token,
        startCursor: startCursor,
        endCursor: startCursor + token.length - 1
      });
    }
  }, {
    key: "nextCharacterToken",
    get: function get() {
      var cursor = this.cursor,
          lineLength = this.lineLength;

      if (lineLength <= cursor) {
        return null;
      }

      return new Token({
        token: this.line[cursor],
        startCursor: cursor,
        endCursor: cursor
      });
    }
  }, {
    key: "lineFromCursor",
    get: function get() {
      return this.line.substr(this.cursor);
    }
  }]);

  return Scanner;
}();

exports.Scanner = Scanner;

},{}],219:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

Object.defineProperty(exports, "__esModule", {
  value: true
});

var ColumnFormatter = function ColumnFormatter(parserOptions) {
  _classCallCheck(this, ColumnFormatter);

  if (parserOptions.trim) {
    this.format = function (col) {
      return col.trim();
    };
  } else if (parserOptions.ltrim) {
    this.format = function (col) {
      return col.trimLeft();
    };
  } else if (parserOptions.rtrim) {
    this.format = function (col) {
      return col.trimRight();
    };
  } else {
    this.format = function (col) {
      return col;
    };
  }
};

exports.default = ColumnFormatter;

},{}],220:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

Object.defineProperty(exports, "__esModule", {
  value: true
});

var NonQuotedColumnParser_1 = require("./NonQuotedColumnParser");

var QuotedColumnParser_1 = require("./QuotedColumnParser");

var Scanner_1 = require("../Scanner");

var ColumnParser =
/*#__PURE__*/
function () {
  function ColumnParser(parserOptions) {
    _classCallCheck(this, ColumnParser);

    this.parserOptions = parserOptions;
    this.quotedColumnParser = new QuotedColumnParser_1.default(parserOptions);
    this.nonQuotedColumnParser = new NonQuotedColumnParser_1.default(parserOptions);
  }

  _createClass(ColumnParser, [{
    key: "parse",
    value: function parse(scanner) {
      var nextNonSpaceToken = scanner.nextNonSpaceToken;

      if (nextNonSpaceToken !== null && Scanner_1.Token.isTokenQuote(nextNonSpaceToken, this.parserOptions)) {
        scanner.advanceToToken(nextNonSpaceToken);
        return this.quotedColumnParser.parse(scanner);
      }

      return this.nonQuotedColumnParser.parse(scanner);
    }
  }]);

  return ColumnParser;
}();

exports.default = ColumnParser;

},{"../Scanner":218,"./NonQuotedColumnParser":221,"./QuotedColumnParser":222}],221:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

Object.defineProperty(exports, "__esModule", {
  value: true
});

var ColumnFormatter_1 = require("./ColumnFormatter");

var Scanner_1 = require("../Scanner");

var _Scanner_1$Token = Scanner_1.Token,
    isTokenDelimiter = _Scanner_1$Token.isTokenDelimiter,
    isTokenRowDelimiter = _Scanner_1$Token.isTokenRowDelimiter;

var NonQuotedColumnParser =
/*#__PURE__*/
function () {
  function NonQuotedColumnParser(parserOptions) {
    _classCallCheck(this, NonQuotedColumnParser);

    this.parserOptions = parserOptions;
    this.columnFormatter = new ColumnFormatter_1.default(parserOptions);
  }

  _createClass(NonQuotedColumnParser, [{
    key: "parse",
    value: function parse(scanner) {
      if (!scanner.hasMoreCharacters) {
        return null;
      }

      var parserOptions = this.parserOptions;
      var characters = [];
      var nextToken = scanner.nextCharacterToken;

      for (; nextToken; nextToken = scanner.nextCharacterToken) {
        if (isTokenDelimiter(nextToken, parserOptions) || isTokenRowDelimiter(nextToken)) {
          break;
        }

        characters.push(nextToken.token);
        scanner.advancePastToken(nextToken);
      }

      return this.columnFormatter.format(characters.join(''));
    }
  }]);

  return NonQuotedColumnParser;
}();

exports.default = NonQuotedColumnParser;

},{"../Scanner":218,"./ColumnFormatter":219}],222:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

Object.defineProperty(exports, "__esModule", {
  value: true
});

var ColumnFormatter_1 = require("./ColumnFormatter");

var Scanner_1 = require("../Scanner");

var _Scanner_1$Token = Scanner_1.Token,
    isTokenDelimiter = _Scanner_1$Token.isTokenDelimiter,
    isTokenRowDelimiter = _Scanner_1$Token.isTokenRowDelimiter,
    isTokenEscapeCharacter = _Scanner_1$Token.isTokenEscapeCharacter,
    isTokenQuote = _Scanner_1$Token.isTokenQuote;

var QuotedColumnParser =
/*#__PURE__*/
function () {
  function QuotedColumnParser(parserOptions) {
    _classCallCheck(this, QuotedColumnParser);

    this.parserOptions = parserOptions;
    this.columnFormatter = new ColumnFormatter_1.default(parserOptions);
  }

  _createClass(QuotedColumnParser, [{
    key: "parse",
    value: function parse(scanner) {
      if (!scanner.hasMoreCharacters) {
        return null;
      }

      var originalCursor = scanner.cursor;

      var _this$gatherDataBetwe = this.gatherDataBetweenQuotes(scanner),
          foundClosingQuote = _this$gatherDataBetwe.foundClosingQuote,
          col = _this$gatherDataBetwe.col;

      if (!foundClosingQuote) {
        // reset the cursor to the original
        scanner.advanceTo(originalCursor); // if we didnt find a closing quote but we potentially have more data then skip the parsing
        // and return the original scanner.

        if (!scanner.hasMoreData) {
          throw new Error("Parse Error: missing closing: '".concat(this.parserOptions.quote, "' in line: at '").concat(scanner.lineFromCursor.replace(/[r\n]/g, "\\n'"), "'"));
        }

        return null;
      }

      this.checkForMalformedColumn(scanner);
      return col;
    }
  }, {
    key: "gatherDataBetweenQuotes",
    value: function gatherDataBetweenQuotes(scanner) {
      var parserOptions = this.parserOptions;
      var foundStartingQuote = false;
      var foundClosingQuote = false;
      var characters = [];
      var nextToken = scanner.nextCharacterToken;

      for (; !foundClosingQuote && nextToken !== null; nextToken = scanner.nextCharacterToken) {
        var isQuote = isTokenQuote(nextToken, parserOptions); // ignore first quote

        if (!foundStartingQuote && isQuote) {
          foundStartingQuote = true;
        } else if (foundStartingQuote) {
          if (isTokenEscapeCharacter(nextToken, parserOptions)) {
            // advance past the escape character so we can get the next one in line
            scanner.advancePastToken(nextToken);
            var tokenFollowingEscape = scanner.nextCharacterToken; // if the character following the escape is a quote character then just add
            // the quote and advance to that character

            if (tokenFollowingEscape !== null && isTokenQuote(tokenFollowingEscape, parserOptions)) {
              characters.push(tokenFollowingEscape.token);
              nextToken = tokenFollowingEscape;
            } else if (isQuote) {
              // if the escape is also a quote then we found our closing quote and finish early
              foundClosingQuote = true;
            } else {
              // other wise add the escape token to the characters since it wast escaping anything
              characters.push(nextToken.token);
            }
          } else if (isQuote) {
            // we found our closing quote!
            foundClosingQuote = true;
          } else {
            // add the token to the characters
            characters.push(nextToken.token);
          }
        }

        scanner.advancePastToken(nextToken);
      }

      return {
        col: this.columnFormatter.format(characters.join('')),
        foundClosingQuote: foundClosingQuote
      };
    }
  }, {
    key: "checkForMalformedColumn",
    value: function checkForMalformedColumn(scanner) {
      var parserOptions = this.parserOptions;
      var nextNonSpaceToken = scanner.nextNonSpaceToken;

      if (nextNonSpaceToken) {
        var isNextTokenADelimiter = isTokenDelimiter(nextNonSpaceToken, parserOptions);
        var isNextTokenARowDelimiter = isTokenRowDelimiter(nextNonSpaceToken);

        if (!(isNextTokenADelimiter || isNextTokenARowDelimiter)) {
          // if the final quote was NOT followed by a column (,) or row(\n) delimiter then its a bad column
          // tldr: only part of the column was quoted
          var linePreview = scanner.lineFromCursor.substr(0, 10).replace(/[\r\n]/g, "\\n'");
          throw new Error("Parse Error: expected: '".concat(parserOptions.escapedDelimiter, "' OR new line got: '").concat(nextNonSpaceToken.token, "'. at '").concat(linePreview));
        }

        scanner.advanceToToken(nextNonSpaceToken);
      } else if (!scanner.hasMoreData) {
        scanner.advancePastLine();
      }
    }
  }]);

  return QuotedColumnParser;
}();

exports.default = QuotedColumnParser;

},{"../Scanner":218,"./ColumnFormatter":219}],223:[function(require,module,exports){
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});

var ColumnParser_1 = require("./ColumnParser");

exports.ColumnParser = ColumnParser_1.default;

var NonQuotedColumnParser_1 = require("./NonQuotedColumnParser");

exports.NonQuotedColumnParser = NonQuotedColumnParser_1.default;

var QuotedColumnParser_1 = require("./QuotedColumnParser");

exports.QuotedColumnParser = QuotedColumnParser_1.default;

var ColumnFormatter_1 = require("./ColumnFormatter");

exports.ColumnFormatter = ColumnFormatter_1.default;

},{"./ColumnFormatter":219,"./ColumnParser":220,"./NonQuotedColumnParser":221,"./QuotedColumnParser":222}],224:[function(require,module,exports){
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});

var Parser_1 = require("./Parser");

exports.Parser = Parser_1.default;

var RowParser_1 = require("./RowParser");

exports.RowParser = RowParser_1.default;

},{"./Parser":216,"./RowParser":217}],225:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

Object.defineProperty(exports, "__esModule", {
  value: true
});

var lodash_1 = require("lodash");

var HeaderTransformer =
/*#__PURE__*/
function () {
  function HeaderTransformer(parserOptions) {
    _classCallCheck(this, HeaderTransformer);

    this.processedFirstRow = false;
    this.headersLength = 0;
    this.parserOptions = parserOptions;
    this.headers = Array.isArray(parserOptions.headers) ? parserOptions.headers : null;
    this.receivedHeaders = Array.isArray(parserOptions.headers);
    this.shouldUseFirstRow = parserOptions.headers === true;

    if (this.receivedHeaders && this.headers) {
      this.headersLength = this.headers.length;
    }
  }

  _createClass(HeaderTransformer, [{
    key: "transform",
    value: function transform(row, cb) {
      if (!this.shouldMapRow(row)) {
        return cb(null, {
          row: null,
          isValid: true
        });
      }

      return cb(null, this.processRow(row));
    }
  }, {
    key: "shouldMapRow",
    value: function shouldMapRow(row) {
      var parserOptions = this.parserOptions;

      if (parserOptions.renameHeaders && !this.processedFirstRow) {
        if (!this.receivedHeaders) {
          throw new Error('Error renaming headers: new headers must be provided in an array');
        }

        this.processedFirstRow = true;
        return false;
      }

      if (!this.receivedHeaders && this.shouldUseFirstRow && Array.isArray(row)) {
        this.headers = row;
        this.receivedHeaders = true;
        this.headersLength = row.length;
        return false;
      }

      return true;
    }
  }, {
    key: "processRow",
    value: function processRow(row) {
      if (!this.headers) {
        return {
          row: row,
          isValid: true
        };
      }

      var parserOptions = this.parserOptions;

      if (!parserOptions.discardUnmappedColumns && row.length > this.headersLength) {
        if (!parserOptions.strictColumnHandling) {
          throw new Error("Unexpected Error: column header mismatch expected: ".concat(this.headersLength, " columns got: ").concat(row.length));
        }

        return {
          row: row,
          isValid: false,
          reason: "Column header mismatch expected: ".concat(this.headersLength, " columns got: ").concat(row.length)
        };
      }

      if (parserOptions.strictColumnHandling && row.length < this.headersLength) {
        return {
          row: row,
          isValid: false,
          reason: "Column header mismatch expected: ".concat(this.headersLength, " columns got: ").concat(row.length)
        };
      }

      return {
        row: this.mapHeaders(row),
        isValid: true
      };
    }
  }, {
    key: "mapHeaders",
    value: function mapHeaders(row) {
      var rowMap = {};
      var headers = this.headers,
          headersLength = this.headersLength;

      for (var i = 0; i < headersLength; i += 1) {
        var header = headers[i];

        if (!lodash_1.isUndefined(header)) {
          var val = row[i]; // eslint-disable-next-line no-param-reassign

          if (lodash_1.isUndefined(val)) {
            rowMap[header] = '';
          } else {
            rowMap[header] = val;
          }
        }
      }

      return rowMap;
    }
  }]);

  return HeaderTransformer;
}();

exports.default = HeaderTransformer;

},{"lodash":284}],226:[function(require,module,exports){
"use strict";

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

Object.defineProperty(exports, "__esModule", {
  value: true
});

var lodash_1 = require("lodash");

var types_1 = require("../types");

var RowTransformerValidator =
/*#__PURE__*/
function () {
  function RowTransformerValidator() {
    _classCallCheck(this, RowTransformerValidator);

    this._rowTransform = null;
    this._rowValidator = null;
  }

  _createClass(RowTransformerValidator, [{
    key: "transformAndValidate",
    value: function transformAndValidate(row, cb) {
      var _this = this;

      return this.callTransformer(row, function (transformErr, transformedRow) {
        if (transformErr) {
          return cb(transformErr);
        }

        if (!transformedRow) {
          return cb(null, {
            row: null,
            isValid: true
          });
        }

        return _this.callValidator(transformedRow, function (validateErr, validationResult) {
          if (validateErr) {
            return cb(validateErr);
          }

          if (validationResult && !validationResult.isValid) {
            return cb(null, {
              row: transformedRow,
              isValid: false,
              reason: validationResult.reason
            });
          }

          return cb(null, {
            row: transformedRow,
            isValid: true
          });
        });
      });
    }
  }, {
    key: "callTransformer",
    value: function callTransformer(row, cb) {
      if (!this._rowTransform) {
        return cb(null, row);
      }

      return this._rowTransform(row, cb);
    }
  }, {
    key: "callValidator",
    value: function callValidator(row, cb) {
      if (!this._rowValidator) {
        return cb(null, {
          row: row,
          isValid: true
        });
      }

      return this._rowValidator(row, cb);
    }
  }, {
    key: "rowTransform",
    set: function set(transformFunction) {
      if (!lodash_1.isFunction(transformFunction)) {
        throw new TypeError('The transform should be a function');
      }

      this._rowTransform = RowTransformerValidator.createTransform(transformFunction);
    }
  }, {
    key: "rowValidator",
    set: function set(validateFunction) {
      if (!lodash_1.isFunction(validateFunction)) {
        throw new TypeError('The validate should be a function');
      }

      this._rowValidator = RowTransformerValidator.createValidator(validateFunction);
    }
  }], [{
    key: "createTransform",
    value: function createTransform(transformFunction) {
      if (types_1.isSyncTransform(transformFunction)) {
        return function (row, cb) {
          var transformed = null;

          try {
            transformed = transformFunction(row);
          } catch (e) {
            return cb(e);
          }

          return cb(null, transformed);
        };
      }

      return transformFunction;
    }
  }, {
    key: "createValidator",
    value: function createValidator(validateFunction) {
      if (types_1.isSyncValidate(validateFunction)) {
        return function (row, cb) {
          cb(null, {
            row: row,
            isValid: validateFunction(row)
          });
        };
      }

      return function (row, cb) {
        validateFunction(row, function (err, isValid, reason) {
          if (err) {
            return cb(err);
          }

          if (isValid) {
            return cb(null, {
              row: row,
              isValid: isValid,
              reason: reason
            });
          }

          return cb(null, {
            row: row,
            isValid: false,
            reason: reason
          });
        });
      };
    }
  }]);

  return RowTransformerValidator;
}();

exports.default = RowTransformerValidator;

},{"../types":228,"lodash":284}],227:[function(require,module,exports){
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});

var RowTransformerValidator_1 = require("./RowTransformerValidator");

exports.RowTransformerValidator = RowTransformerValidator_1.default;

var HeaderTransformer_1 = require("./HeaderTransformer");

exports.HeaderTransformer = HeaderTransformer_1.default;

},{"./HeaderTransformer":225,"./RowTransformerValidator":226}],228:[function(require,module,exports){
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});

exports.isSyncTransform = function (transform) {
  return transform.length === 1;
};

exports.isSyncValidate = function (validate) {
  return validate.length === 1;
};

},{}],229:[function(require,module,exports){
'use strict'
var Buffer = require('safe-buffer').Buffer
var Transform = require('stream').Transform
var inherits = require('inherits')

function throwIfNotStringOrBuffer (val, prefix) {
  if (!Buffer.isBuffer(val) && typeof val !== 'string') {
    throw new TypeError(prefix + ' must be a string or a buffer')
  }
}

function HashBase (blockSize) {
  Transform.call(this)

  this._block = Buffer.allocUnsafe(blockSize)
  this._blockSize = blockSize
  this._blockOffset = 0
  this._length = [0, 0, 0, 0]

  this._finalized = false
}

inherits(HashBase, Transform)

HashBase.prototype._transform = function (chunk, encoding, callback) {
  var error = null
  try {
    this.update(chunk, encoding)
  } catch (err) {
    error = err
  }

  callback(error)
}

HashBase.prototype._flush = function (callback) {
  var error = null
  try {
    this.push(this.digest())
  } catch (err) {
    error = err
  }

  callback(error)
}

HashBase.prototype.update = function (data, encoding) {
  throwIfNotStringOrBuffer(data, 'Data')
  if (this._finalized) throw new Error('Digest already called')
  if (!Buffer.isBuffer(data)) data = Buffer.from(data, encoding)

  // consume data
  var block = this._block
  var offset = 0
  while (this._blockOffset + data.length - offset >= this._blockSize) {
    for (var i = this._blockOffset; i < this._blockSize;) block[i++] = data[offset++]
    this._update()
    this._blockOffset = 0
  }
  while (offset < data.length) block[this._blockOffset++] = data[offset++]

  // update length
  for (var j = 0, carry = data.length * 8; carry > 0; ++j) {
    this._length[j] += carry
    carry = (this._length[j] / 0x0100000000) | 0
    if (carry > 0) this._length[j] -= 0x0100000000 * carry
  }

  return this
}

HashBase.prototype._update = function () {
  throw new Error('_update is not implemented')
}

HashBase.prototype.digest = function (encoding) {
  if (this._finalized) throw new Error('Digest already called')
  this._finalized = true

  var digest = this._digest()
  if (encoding !== undefined) digest = digest.toString(encoding)

  // reset state
  this._block.fill(0)
  this._blockOffset = 0
  for (var i = 0; i < 4; ++i) this._length[i] = 0

  return digest
}

HashBase.prototype._digest = function () {
  throw new Error('_digest is not implemented')
}

module.exports = HashBase

},{"inherits":245,"safe-buffer":326,"stream":337}],230:[function(require,module,exports){
var hash = exports;

hash.utils = require('./hash/utils');
hash.common = require('./hash/common');
hash.sha = require('./hash/sha');
hash.ripemd = require('./hash/ripemd');
hash.hmac = require('./hash/hmac');

// Proxy hash functions to the main object
hash.sha1 = hash.sha.sha1;
hash.sha256 = hash.sha.sha256;
hash.sha224 = hash.sha.sha224;
hash.sha384 = hash.sha.sha384;
hash.sha512 = hash.sha.sha512;
hash.ripemd160 = hash.ripemd.ripemd160;

},{"./hash/common":231,"./hash/hmac":232,"./hash/ripemd":233,"./hash/sha":234,"./hash/utils":241}],231:[function(require,module,exports){
'use strict';

var utils = require('./utils');
var assert = require('minimalistic-assert');

function BlockHash() {
  this.pending = null;
  this.pendingTotal = 0;
  this.blockSize = this.constructor.blockSize;
  this.outSize = this.constructor.outSize;
  this.hmacStrength = this.constructor.hmacStrength;
  this.padLength = this.constructor.padLength / 8;
  this.endian = 'big';

  this._delta8 = this.blockSize / 8;
  this._delta32 = this.blockSize / 32;
}
exports.BlockHash = BlockHash;

BlockHash.prototype.update = function update(msg, enc) {
  // Convert message to array, pad it, and join into 32bit blocks
  msg = utils.toArray(msg, enc);
  if (!this.pending)
    this.pending = msg;
  else
    this.pending = this.pending.concat(msg);
  this.pendingTotal += msg.length;

  // Enough data, try updating
  if (this.pending.length >= this._delta8) {
    msg = this.pending;

    // Process pending data in blocks
    var r = msg.length % this._delta8;
    this.pending = msg.slice(msg.length - r, msg.length);
    if (this.pending.length === 0)
      this.pending = null;

    msg = utils.join32(msg, 0, msg.length - r, this.endian);
    for (var i = 0; i < msg.length; i += this._delta32)
      this._update(msg, i, i + this._delta32);
  }

  return this;
};

BlockHash.prototype.digest = function digest(enc) {
  this.update(this._pad());
  assert(this.pending === null);

  return this._digest(enc);
};

BlockHash.prototype._pad = function pad() {
  var len = this.pendingTotal;
  var bytes = this._delta8;
  var k = bytes - ((len + this.padLength) % bytes);
  var res = new Array(k + this.padLength);
  res[0] = 0x80;
  for (var i = 1; i < k; i++)
    res[i] = 0;

  // Append length
  len <<= 3;
  if (this.endian === 'big') {
    for (var t = 8; t < this.padLength; t++)
      res[i++] = 0;

    res[i++] = 0;
    res[i++] = 0;
    res[i++] = 0;
    res[i++] = 0;
    res[i++] = (len >>> 24) & 0xff;
    res[i++] = (len >>> 16) & 0xff;
    res[i++] = (len >>> 8) & 0xff;
    res[i++] = len & 0xff;
  } else {
    res[i++] = len & 0xff;
    res[i++] = (len >>> 8) & 0xff;
    res[i++] = (len >>> 16) & 0xff;
    res[i++] = (len >>> 24) & 0xff;
    res[i++] = 0;
    res[i++] = 0;
    res[i++] = 0;
    res[i++] = 0;

    for (t = 8; t < this.padLength; t++)
      res[i++] = 0;
  }

  return res;
};

},{"./utils":241,"minimalistic-assert":287}],232:[function(require,module,exports){
'use strict';

var utils = require('./utils');
var assert = require('minimalistic-assert');

function Hmac(hash, key, enc) {
  if (!(this instanceof Hmac))
    return new Hmac(hash, key, enc);
  this.Hash = hash;
  this.blockSize = hash.blockSize / 8;
  this.outSize = hash.outSize / 8;
  this.inner = null;
  this.outer = null;

  this._init(utils.toArray(key, enc));
}
module.exports = Hmac;

Hmac.prototype._init = function init(key) {
  // Shorten key, if needed
  if (key.length > this.blockSize)
    key = new this.Hash().update(key).digest();
  assert(key.length <= this.blockSize);

  // Add padding to key
  for (var i = key.length; i < this.blockSize; i++)
    key.push(0);

  for (i = 0; i < key.length; i++)
    key[i] ^= 0x36;
  this.inner = new this.Hash().update(key);

  // 0x36 ^ 0x5c = 0x6a
  for (i = 0; i < key.length; i++)
    key[i] ^= 0x6a;
  this.outer = new this.Hash().update(key);
};

Hmac.prototype.update = function update(msg, enc) {
  this.inner.update(msg, enc);
  return this;
};

Hmac.prototype.digest = function digest(enc) {
  this.outer.update(this.inner.digest());
  return this.outer.digest(enc);
};

},{"./utils":241,"minimalistic-assert":287}],233:[function(require,module,exports){
'use strict';

var utils = require('./utils');
var common = require('./common');

var rotl32 = utils.rotl32;
var sum32 = utils.sum32;
var sum32_3 = utils.sum32_3;
var sum32_4 = utils.sum32_4;
var BlockHash = common.BlockHash;

function RIPEMD160() {
  if (!(this instanceof RIPEMD160))
    return new RIPEMD160();

  BlockHash.call(this);

  this.h = [ 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0 ];
  this.endian = 'little';
}
utils.inherits(RIPEMD160, BlockHash);
exports.ripemd160 = RIPEMD160;

RIPEMD160.blockSize = 512;
RIPEMD160.outSize = 160;
RIPEMD160.hmacStrength = 192;
RIPEMD160.padLength = 64;

RIPEMD160.prototype._update = function update(msg, start) {
  var A = this.h[0];
  var B = this.h[1];
  var C = this.h[2];
  var D = this.h[3];
  var E = this.h[4];
  var Ah = A;
  var Bh = B;
  var Ch = C;
  var Dh = D;
  var Eh = E;
  for (var j = 0; j < 80; j++) {
    var T = sum32(
      rotl32(
        sum32_4(A, f(j, B, C, D), msg[r[j] + start], K(j)),
        s[j]),
      E);
    A = E;
    E = D;
    D = rotl32(C, 10);
    C = B;
    B = T;
    T = sum32(
      rotl32(
        sum32_4(Ah, f(79 - j, Bh, Ch, Dh), msg[rh[j] + start], Kh(j)),
        sh[j]),
      Eh);
    Ah = Eh;
    Eh = Dh;
    Dh = rotl32(Ch, 10);
    Ch = Bh;
    Bh = T;
  }
  T = sum32_3(this.h[1], C, Dh);
  this.h[1] = sum32_3(this.h[2], D, Eh);
  this.h[2] = sum32_3(this.h[3], E, Ah);
  this.h[3] = sum32_3(this.h[4], A, Bh);
  this.h[4] = sum32_3(this.h[0], B, Ch);
  this.h[0] = T;
};

RIPEMD160.prototype._digest = function digest(enc) {
  if (enc === 'hex')
    return utils.toHex32(this.h, 'little');
  else
    return utils.split32(this.h, 'little');
};

function f(j, x, y, z) {
  if (j <= 15)
    return x ^ y ^ z;
  else if (j <= 31)
    return (x & y) | ((~x) & z);
  else if (j <= 47)
    return (x | (~y)) ^ z;
  else if (j <= 63)
    return (x & z) | (y & (~z));
  else
    return x ^ (y | (~z));
}

function K(j) {
  if (j <= 15)
    return 0x00000000;
  else if (j <= 31)
    return 0x5a827999;
  else if (j <= 47)
    return 0x6ed9eba1;
  else if (j <= 63)
    return 0x8f1bbcdc;
  else
    return 0xa953fd4e;
}

function Kh(j) {
  if (j <= 15)
    return 0x50a28be6;
  else if (j <= 31)
    return 0x5c4dd124;
  else if (j <= 47)
    return 0x6d703ef3;
  else if (j <= 63)
    return 0x7a6d76e9;
  else
    return 0x00000000;
}

var r = [
  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
  7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
  3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
  1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
  4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
];

var rh = [
  5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
  6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
  15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
  8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
  12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
];

var s = [
  11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
  7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
  11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
  11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
  9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
];

var sh = [
  8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
  9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
  9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
  15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
  8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
];

},{"./common":231,"./utils":241}],234:[function(require,module,exports){
'use strict';

exports.sha1 = require('./sha/1');
exports.sha224 = require('./sha/224');
exports.sha256 = require('./sha/256');
exports.sha384 = require('./sha/384');
exports.sha512 = require('./sha/512');

},{"./sha/1":235,"./sha/224":236,"./sha/256":237,"./sha/384":238,"./sha/512":239}],235:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var common = require('../common');
var shaCommon = require('./common');

var rotl32 = utils.rotl32;
var sum32 = utils.sum32;
var sum32_5 = utils.sum32_5;
var ft_1 = shaCommon.ft_1;
var BlockHash = common.BlockHash;

var sha1_K = [
  0x5A827999, 0x6ED9EBA1,
  0x8F1BBCDC, 0xCA62C1D6
];

function SHA1() {
  if (!(this instanceof SHA1))
    return new SHA1();

  BlockHash.call(this);
  this.h = [
    0x67452301, 0xefcdab89, 0x98badcfe,
    0x10325476, 0xc3d2e1f0 ];
  this.W = new Array(80);
}

utils.inherits(SHA1, BlockHash);
module.exports = SHA1;

SHA1.blockSize = 512;
SHA1.outSize = 160;
SHA1.hmacStrength = 80;
SHA1.padLength = 64;

SHA1.prototype._update = function _update(msg, start) {
  var W = this.W;

  for (var i = 0; i < 16; i++)
    W[i] = msg[start + i];

  for(; i < W.length; i++)
    W[i] = rotl32(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16], 1);

  var a = this.h[0];
  var b = this.h[1];
  var c = this.h[2];
  var d = this.h[3];
  var e = this.h[4];

  for (i = 0; i < W.length; i++) {
    var s = ~~(i / 20);
    var t = sum32_5(rotl32(a, 5), ft_1(s, b, c, d), e, W[i], sha1_K[s]);
    e = d;
    d = c;
    c = rotl32(b, 30);
    b = a;
    a = t;
  }

  this.h[0] = sum32(this.h[0], a);
  this.h[1] = sum32(this.h[1], b);
  this.h[2] = sum32(this.h[2], c);
  this.h[3] = sum32(this.h[3], d);
  this.h[4] = sum32(this.h[4], e);
};

SHA1.prototype._digest = function digest(enc) {
  if (enc === 'hex')
    return utils.toHex32(this.h, 'big');
  else
    return utils.split32(this.h, 'big');
};

},{"../common":231,"../utils":241,"./common":240}],236:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var SHA256 = require('./256');

function SHA224() {
  if (!(this instanceof SHA224))
    return new SHA224();

  SHA256.call(this);
  this.h = [
    0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939,
    0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4 ];
}
utils.inherits(SHA224, SHA256);
module.exports = SHA224;

SHA224.blockSize = 512;
SHA224.outSize = 224;
SHA224.hmacStrength = 192;
SHA224.padLength = 64;

SHA224.prototype._digest = function digest(enc) {
  // Just truncate output
  if (enc === 'hex')
    return utils.toHex32(this.h.slice(0, 7), 'big');
  else
    return utils.split32(this.h.slice(0, 7), 'big');
};


},{"../utils":241,"./256":237}],237:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var common = require('../common');
var shaCommon = require('./common');
var assert = require('minimalistic-assert');

var sum32 = utils.sum32;
var sum32_4 = utils.sum32_4;
var sum32_5 = utils.sum32_5;
var ch32 = shaCommon.ch32;
var maj32 = shaCommon.maj32;
var s0_256 = shaCommon.s0_256;
var s1_256 = shaCommon.s1_256;
var g0_256 = shaCommon.g0_256;
var g1_256 = shaCommon.g1_256;

var BlockHash = common.BlockHash;

var sha256_K = [
  0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
  0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
  0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
  0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
  0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
  0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
  0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
  0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
  0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
  0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
  0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
  0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
  0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
  0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
  0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
  0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
];

function SHA256() {
  if (!(this instanceof SHA256))
    return new SHA256();

  BlockHash.call(this);
  this.h = [
    0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
    0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
  ];
  this.k = sha256_K;
  this.W = new Array(64);
}
utils.inherits(SHA256, BlockHash);
module.exports = SHA256;

SHA256.blockSize = 512;
SHA256.outSize = 256;
SHA256.hmacStrength = 192;
SHA256.padLength = 64;

SHA256.prototype._update = function _update(msg, start) {
  var W = this.W;

  for (var i = 0; i < 16; i++)
    W[i] = msg[start + i];
  for (; i < W.length; i++)
    W[i] = sum32_4(g1_256(W[i - 2]), W[i - 7], g0_256(W[i - 15]), W[i - 16]);

  var a = this.h[0];
  var b = this.h[1];
  var c = this.h[2];
  var d = this.h[3];
  var e = this.h[4];
  var f = this.h[5];
  var g = this.h[6];
  var h = this.h[7];

  assert(this.k.length === W.length);
  for (i = 0; i < W.length; i++) {
    var T1 = sum32_5(h, s1_256(e), ch32(e, f, g), this.k[i], W[i]);
    var T2 = sum32(s0_256(a), maj32(a, b, c));
    h = g;
    g = f;
    f = e;
    e = sum32(d, T1);
    d = c;
    c = b;
    b = a;
    a = sum32(T1, T2);
  }

  this.h[0] = sum32(this.h[0], a);
  this.h[1] = sum32(this.h[1], b);
  this.h[2] = sum32(this.h[2], c);
  this.h[3] = sum32(this.h[3], d);
  this.h[4] = sum32(this.h[4], e);
  this.h[5] = sum32(this.h[5], f);
  this.h[6] = sum32(this.h[6], g);
  this.h[7] = sum32(this.h[7], h);
};

SHA256.prototype._digest = function digest(enc) {
  if (enc === 'hex')
    return utils.toHex32(this.h, 'big');
  else
    return utils.split32(this.h, 'big');
};

},{"../common":231,"../utils":241,"./common":240,"minimalistic-assert":287}],238:[function(require,module,exports){
'use strict';

var utils = require('../utils');

var SHA512 = require('./512');

function SHA384() {
  if (!(this instanceof SHA384))
    return new SHA384();

  SHA512.call(this);
  this.h = [
    0xcbbb9d5d, 0xc1059ed8,
    0x629a292a, 0x367cd507,
    0x9159015a, 0x3070dd17,
    0x152fecd8, 0xf70e5939,
    0x67332667, 0xffc00b31,
    0x8eb44a87, 0x68581511,
    0xdb0c2e0d, 0x64f98fa7,
    0x47b5481d, 0xbefa4fa4 ];
}
utils.inherits(SHA384, SHA512);
module.exports = SHA384;

SHA384.blockSize = 1024;
SHA384.outSize = 384;
SHA384.hmacStrength = 192;
SHA384.padLength = 128;

SHA384.prototype._digest = function digest(enc) {
  if (enc === 'hex')
    return utils.toHex32(this.h.slice(0, 12), 'big');
  else
    return utils.split32(this.h.slice(0, 12), 'big');
};

},{"../utils":241,"./512":239}],239:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var common = require('../common');
var assert = require('minimalistic-assert');

var rotr64_hi = utils.rotr64_hi;
var rotr64_lo = utils.rotr64_lo;
var shr64_hi = utils.shr64_hi;
var shr64_lo = utils.shr64_lo;
var sum64 = utils.sum64;
var sum64_hi = utils.sum64_hi;
var sum64_lo = utils.sum64_lo;
var sum64_4_hi = utils.sum64_4_hi;
var sum64_4_lo = utils.sum64_4_lo;
var sum64_5_hi = utils.sum64_5_hi;
var sum64_5_lo = utils.sum64_5_lo;

var BlockHash = common.BlockHash;

var sha512_K = [
  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
];

function SHA512() {
  if (!(this instanceof SHA512))
    return new SHA512();

  BlockHash.call(this);
  this.h = [
    0x6a09e667, 0xf3bcc908,
    0xbb67ae85, 0x84caa73b,
    0x3c6ef372, 0xfe94f82b,
    0xa54ff53a, 0x5f1d36f1,
    0x510e527f, 0xade682d1,
    0x9b05688c, 0x2b3e6c1f,
    0x1f83d9ab, 0xfb41bd6b,
    0x5be0cd19, 0x137e2179 ];
  this.k = sha512_K;
  this.W = new Array(160);
}
utils.inherits(SHA512, BlockHash);
module.exports = SHA512;

SHA512.blockSize = 1024;
SHA512.outSize = 512;
SHA512.hmacStrength = 192;
SHA512.padLength = 128;

SHA512.prototype._prepareBlock = function _prepareBlock(msg, start) {
  var W = this.W;

  // 32 x 32bit words
  for (var i = 0; i < 32; i++)
    W[i] = msg[start + i];
  for (; i < W.length; i += 2) {
    var c0_hi = g1_512_hi(W[i - 4], W[i - 3]);  // i - 2
    var c0_lo = g1_512_lo(W[i - 4], W[i - 3]);
    var c1_hi = W[i - 14];  // i - 7
    var c1_lo = W[i - 13];
    var c2_hi = g0_512_hi(W[i - 30], W[i - 29]);  // i - 15
    var c2_lo = g0_512_lo(W[i - 30], W[i - 29]);
    var c3_hi = W[i - 32];  // i - 16
    var c3_lo = W[i - 31];

    W[i] = sum64_4_hi(
      c0_hi, c0_lo,
      c1_hi, c1_lo,
      c2_hi, c2_lo,
      c3_hi, c3_lo);
    W[i + 1] = sum64_4_lo(
      c0_hi, c0_lo,
      c1_hi, c1_lo,
      c2_hi, c2_lo,
      c3_hi, c3_lo);
  }
};

SHA512.prototype._update = function _update(msg, start) {
  this._prepareBlock(msg, start);

  var W = this.W;

  var ah = this.h[0];
  var al = this.h[1];
  var bh = this.h[2];
  var bl = this.h[3];
  var ch = this.h[4];
  var cl = this.h[5];
  var dh = this.h[6];
  var dl = this.h[7];
  var eh = this.h[8];
  var el = this.h[9];
  var fh = this.h[10];
  var fl = this.h[11];
  var gh = this.h[12];
  var gl = this.h[13];
  var hh = this.h[14];
  var hl = this.h[15];

  assert(this.k.length === W.length);
  for (var i = 0; i < W.length; i += 2) {
    var c0_hi = hh;
    var c0_lo = hl;
    var c1_hi = s1_512_hi(eh, el);
    var c1_lo = s1_512_lo(eh, el);
    var c2_hi = ch64_hi(eh, el, fh, fl, gh, gl);
    var c2_lo = ch64_lo(eh, el, fh, fl, gh, gl);
    var c3_hi = this.k[i];
    var c3_lo = this.k[i + 1];
    var c4_hi = W[i];
    var c4_lo = W[i + 1];

    var T1_hi = sum64_5_hi(
      c0_hi, c0_lo,
      c1_hi, c1_lo,
      c2_hi, c2_lo,
      c3_hi, c3_lo,
      c4_hi, c4_lo);
    var T1_lo = sum64_5_lo(
      c0_hi, c0_lo,
      c1_hi, c1_lo,
      c2_hi, c2_lo,
      c3_hi, c3_lo,
      c4_hi, c4_lo);

    c0_hi = s0_512_hi(ah, al);
    c0_lo = s0_512_lo(ah, al);
    c1_hi = maj64_hi(ah, al, bh, bl, ch, cl);
    c1_lo = maj64_lo(ah, al, bh, bl, ch, cl);

    var T2_hi = sum64_hi(c0_hi, c0_lo, c1_hi, c1_lo);
    var T2_lo = sum64_lo(c0_hi, c0_lo, c1_hi, c1_lo);

    hh = gh;
    hl = gl;

    gh = fh;
    gl = fl;

    fh = eh;
    fl = el;

    eh = sum64_hi(dh, dl, T1_hi, T1_lo);
    el = sum64_lo(dl, dl, T1_hi, T1_lo);

    dh = ch;
    dl = cl;

    ch = bh;
    cl = bl;

    bh = ah;
    bl = al;

    ah = sum64_hi(T1_hi, T1_lo, T2_hi, T2_lo);
    al = sum64_lo(T1_hi, T1_lo, T2_hi, T2_lo);
  }

  sum64(this.h, 0, ah, al);
  sum64(this.h, 2, bh, bl);
  sum64(this.h, 4, ch, cl);
  sum64(this.h, 6, dh, dl);
  sum64(this.h, 8, eh, el);
  sum64(this.h, 10, fh, fl);
  sum64(this.h, 12, gh, gl);
  sum64(this.h, 14, hh, hl);
};

SHA512.prototype._digest = function digest(enc) {
  if (enc === 'hex')
    return utils.toHex32(this.h, 'big');
  else
    return utils.split32(this.h, 'big');
};

function ch64_hi(xh, xl, yh, yl, zh) {
  var r = (xh & yh) ^ ((~xh) & zh);
  if (r < 0)
    r += 0x100000000;
  return r;
}

function ch64_lo(xh, xl, yh, yl, zh, zl) {
  var r = (xl & yl) ^ ((~xl) & zl);
  if (r < 0)
    r += 0x100000000;
  return r;
}

function maj64_hi(xh, xl, yh, yl, zh) {
  var r = (xh & yh) ^ (xh & zh) ^ (yh & zh);
  if (r < 0)
    r += 0x100000000;
  return r;
}

function maj64_lo(xh, xl, yh, yl, zh, zl) {
  var r = (xl & yl) ^ (xl & zl) ^ (yl & zl);
  if (r < 0)
    r += 0x100000000;
  return r;
}

function s0_512_hi(xh, xl) {
  var c0_hi = rotr64_hi(xh, xl, 28);
  var c1_hi = rotr64_hi(xl, xh, 2);  // 34
  var c2_hi = rotr64_hi(xl, xh, 7);  // 39

  var r = c0_hi ^ c1_hi ^ c2_hi;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function s0_512_lo(xh, xl) {
  var c0_lo = rotr64_lo(xh, xl, 28);
  var c1_lo = rotr64_lo(xl, xh, 2);  // 34
  var c2_lo = rotr64_lo(xl, xh, 7);  // 39

  var r = c0_lo ^ c1_lo ^ c2_lo;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function s1_512_hi(xh, xl) {
  var c0_hi = rotr64_hi(xh, xl, 14);
  var c1_hi = rotr64_hi(xh, xl, 18);
  var c2_hi = rotr64_hi(xl, xh, 9);  // 41

  var r = c0_hi ^ c1_hi ^ c2_hi;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function s1_512_lo(xh, xl) {
  var c0_lo = rotr64_lo(xh, xl, 14);
  var c1_lo = rotr64_lo(xh, xl, 18);
  var c2_lo = rotr64_lo(xl, xh, 9);  // 41

  var r = c0_lo ^ c1_lo ^ c2_lo;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function g0_512_hi(xh, xl) {
  var c0_hi = rotr64_hi(xh, xl, 1);
  var c1_hi = rotr64_hi(xh, xl, 8);
  var c2_hi = shr64_hi(xh, xl, 7);

  var r = c0_hi ^ c1_hi ^ c2_hi;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function g0_512_lo(xh, xl) {
  var c0_lo = rotr64_lo(xh, xl, 1);
  var c1_lo = rotr64_lo(xh, xl, 8);
  var c2_lo = shr64_lo(xh, xl, 7);

  var r = c0_lo ^ c1_lo ^ c2_lo;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function g1_512_hi(xh, xl) {
  var c0_hi = rotr64_hi(xh, xl, 19);
  var c1_hi = rotr64_hi(xl, xh, 29);  // 61
  var c2_hi = shr64_hi(xh, xl, 6);

  var r = c0_hi ^ c1_hi ^ c2_hi;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function g1_512_lo(xh, xl) {
  var c0_lo = rotr64_lo(xh, xl, 19);
  var c1_lo = rotr64_lo(xl, xh, 29);  // 61
  var c2_lo = shr64_lo(xh, xl, 6);

  var r = c0_lo ^ c1_lo ^ c2_lo;
  if (r < 0)
    r += 0x100000000;
  return r;
}

},{"../common":231,"../utils":241,"minimalistic-assert":287}],240:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var rotr32 = utils.rotr32;

function ft_1(s, x, y, z) {
  if (s === 0)
    return ch32(x, y, z);
  if (s === 1 || s === 3)
    return p32(x, y, z);
  if (s === 2)
    return maj32(x, y, z);
}
exports.ft_1 = ft_1;

function ch32(x, y, z) {
  return (x & y) ^ ((~x) & z);
}
exports.ch32 = ch32;

function maj32(x, y, z) {
  return (x & y) ^ (x & z) ^ (y & z);
}
exports.maj32 = maj32;

function p32(x, y, z) {
  return x ^ y ^ z;
}
exports.p32 = p32;

function s0_256(x) {
  return rotr32(x, 2) ^ rotr32(x, 13) ^ rotr32(x, 22);
}
exports.s0_256 = s0_256;

function s1_256(x) {
  return rotr32(x, 6) ^ rotr32(x, 11) ^ rotr32(x, 25);
}
exports.s1_256 = s1_256;

function g0_256(x) {
  return rotr32(x, 7) ^ rotr32(x, 18) ^ (x >>> 3);
}
exports.g0_256 = g0_256;

function g1_256(x) {
  return rotr32(x, 17) ^ rotr32(x, 19) ^ (x >>> 10);
}
exports.g1_256 = g1_256;

},{"../utils":241}],241:[function(require,module,exports){
'use strict';

var assert = require('minimalistic-assert');
var inherits = require('inherits');

exports.inherits = inherits;

function isSurrogatePair(msg, i) {
  if ((msg.charCodeAt(i) & 0xFC00) !== 0xD800) {
    return false;
  }
  if (i < 0 || i + 1 >= msg.length) {
    return false;
  }
  return (msg.charCodeAt(i + 1) & 0xFC00) === 0xDC00;
}

function toArray(msg, enc) {
  if (Array.isArray(msg))
    return msg.slice();
  if (!msg)
    return [];
  var res = [];
  if (typeof msg === 'string') {
    if (!enc) {
      // Inspired by stringToUtf8ByteArray() in closure-library by Google
      // https://github.com/google/closure-library/blob/8598d87242af59aac233270742c8984e2b2bdbe0/closure/goog/crypt/crypt.js#L117-L143
      // Apache License 2.0
      // https://github.com/google/closure-library/blob/master/LICENSE
      var p = 0;
      for (var i = 0; i < msg.length; i++) {
        var c = msg.charCodeAt(i);
        if (c < 128) {
          res[p++] = c;
        } else if (c < 2048) {
          res[p++] = (c >> 6) | 192;
          res[p++] = (c & 63) | 128;
        } else if (isSurrogatePair(msg, i)) {
          c = 0x10000 + ((c & 0x03FF) << 10) + (msg.charCodeAt(++i) & 0x03FF);
          res[p++] = (c >> 18) | 240;
          res[p++] = ((c >> 12) & 63) | 128;
          res[p++] = ((c >> 6) & 63) | 128;
          res[p++] = (c & 63) | 128;
        } else {
          res[p++] = (c >> 12) | 224;
          res[p++] = ((c >> 6) & 63) | 128;
          res[p++] = (c & 63) | 128;
        }
      }
    } else if (enc === 'hex') {
      msg = msg.replace(/[^a-z0-9]+/ig, '');
      if (msg.length % 2 !== 0)
        msg = '0' + msg;
      for (i = 0; i < msg.length; i += 2)
        res.push(parseInt(msg[i] + msg[i + 1], 16));
    }
  } else {
    for (i = 0; i < msg.length; i++)
      res[i] = msg[i] | 0;
  }
  return res;
}
exports.toArray = toArray;

function toHex(msg) {
  var res = '';
  for (var i = 0; i < msg.length; i++)
    res += zero2(msg[i].toString(16));
  return res;
}
exports.toHex = toHex;

function htonl(w) {
  var res = (w >>> 24) |
            ((w >>> 8) & 0xff00) |
            ((w << 8) & 0xff0000) |
            ((w & 0xff) << 24);
  return res >>> 0;
}
exports.htonl = htonl;

function toHex32(msg, endian) {
  var res = '';
  for (var i = 0; i < msg.length; i++) {
    var w = msg[i];
    if (endian === 'little')
      w = htonl(w);
    res += zero8(w.toString(16));
  }
  return res;
}
exports.toHex32 = toHex32;

function zero2(word) {
  if (word.length === 1)
    return '0' + word;
  else
    return word;
}
exports.zero2 = zero2;

function zero8(word) {
  if (word.length === 7)
    return '0' + word;
  else if (word.length === 6)
    return '00' + word;
  else if (word.length === 5)
    return '000' + word;
  else if (word.length === 4)
    return '0000' + word;
  else if (word.length === 3)
    return '00000' + word;
  else if (word.length === 2)
    return '000000' + word;
  else if (word.length === 1)
    return '0000000' + word;
  else
    return word;
}
exports.zero8 = zero8;

function join32(msg, start, end, endian) {
  var len = end - start;
  assert(len % 4 === 0);
  var res = new Array(len / 4);
  for (var i = 0, k = start; i < res.length; i++, k += 4) {
    var w;
    if (endian === 'big')
      w = (msg[k] << 24) | (msg[k + 1] << 16) | (msg[k + 2] << 8) | msg[k + 3];
    else
      w = (msg[k + 3] << 24) | (msg[k + 2] << 16) | (msg[k + 1] << 8) | msg[k];
    res[i] = w >>> 0;
  }
  return res;
}
exports.join32 = join32;

function split32(msg, endian) {
  var res = new Array(msg.length * 4);
  for (var i = 0, k = 0; i < msg.length; i++, k += 4) {
    var m = msg[i];
    if (endian === 'big') {
      res[k] = m >>> 24;
      res[k + 1] = (m >>> 16) & 0xff;
      res[k + 2] = (m >>> 8) & 0xff;
      res[k + 3] = m & 0xff;
    } else {
      res[k + 3] = m >>> 24;
      res[k + 2] = (m >>> 16) & 0xff;
      res[k + 1] = (m >>> 8) & 0xff;
      res[k] = m & 0xff;
    }
  }
  return res;
}
exports.split32 = split32;

function rotr32(w, b) {
  return (w >>> b) | (w << (32 - b));
}
exports.rotr32 = rotr32;

function rotl32(w, b) {
  return (w << b) | (w >>> (32 - b));
}
exports.rotl32 = rotl32;

function sum32(a, b) {
  return (a + b) >>> 0;
}
exports.sum32 = sum32;

function sum32_3(a, b, c) {
  return (a + b + c) >>> 0;
}
exports.sum32_3 = sum32_3;

function sum32_4(a, b, c, d) {
  return (a + b + c + d) >>> 0;
}
exports.sum32_4 = sum32_4;

function sum32_5(a, b, c, d, e) {
  return (a + b + c + d + e) >>> 0;
}
exports.sum32_5 = sum32_5;

function sum64(buf, pos, ah, al) {
  var bh = buf[pos];
  var bl = buf[pos + 1];

  var lo = (al + bl) >>> 0;
  var hi = (lo < al ? 1 : 0) + ah + bh;
  buf[pos] = hi >>> 0;
  buf[pos + 1] = lo;
}
exports.sum64 = sum64;

function sum64_hi(ah, al, bh, bl) {
  var lo = (al + bl) >>> 0;
  var hi = (lo < al ? 1 : 0) + ah + bh;
  return hi >>> 0;
}
exports.sum64_hi = sum64_hi;

function sum64_lo(ah, al, bh, bl) {
  var lo = al + bl;
  return lo >>> 0;
}
exports.sum64_lo = sum64_lo;

function sum64_4_hi(ah, al, bh, bl, ch, cl, dh, dl) {
  var carry = 0;
  var lo = al;
  lo = (lo + bl) >>> 0;
  carry += lo < al ? 1 : 0;
  lo = (lo + cl) >>> 0;
  carry += lo < cl ? 1 : 0;
  lo = (lo + dl) >>> 0;
  carry += lo < dl ? 1 : 0;

  var hi = ah + bh + ch + dh + carry;
  return hi >>> 0;
}
exports.sum64_4_hi = sum64_4_hi;

function sum64_4_lo(ah, al, bh, bl, ch, cl, dh, dl) {
  var lo = al + bl + cl + dl;
  return lo >>> 0;
}
exports.sum64_4_lo = sum64_4_lo;

function sum64_5_hi(ah, al, bh, bl, ch, cl, dh, dl, eh, el) {
  var carry = 0;
  var lo = al;
  lo = (lo + bl) >>> 0;
  carry += lo < al ? 1 : 0;
  lo = (lo + cl) >>> 0;
  carry += lo < cl ? 1 : 0;
  lo = (lo + dl) >>> 0;
  carry += lo < dl ? 1 : 0;
  lo = (lo + el) >>> 0;
  carry += lo < el ? 1 : 0;

  var hi = ah + bh + ch + dh + eh + carry;
  return hi >>> 0;
}
exports.sum64_5_hi = sum64_5_hi;

function sum64_5_lo(ah, al, bh, bl, ch, cl, dh, dl, eh, el) {
  var lo = al + bl + cl + dl + el;

  return lo >>> 0;
}
exports.sum64_5_lo = sum64_5_lo;

function rotr64_hi(ah, al, num) {
  var r = (al << (32 - num)) | (ah >>> num);
  return r >>> 0;
}
exports.rotr64_hi = rotr64_hi;

function rotr64_lo(ah, al, num) {
  var r = (ah << (32 - num)) | (al >>> num);
  return r >>> 0;
}
exports.rotr64_lo = rotr64_lo;

function shr64_hi(ah, al, num) {
  return ah >>> num;
}
exports.shr64_hi = shr64_hi;

function shr64_lo(ah, al, num) {
  var r = (ah << (32 - num)) | (al >>> num);
  return r >>> 0;
}
exports.shr64_lo = shr64_lo;

},{"inherits":245,"minimalistic-assert":287}],242:[function(require,module,exports){
'use strict';

var hash = require('hash.js');
var utils = require('minimalistic-crypto-utils');
var assert = require('minimalistic-assert');

function HmacDRBG(options) {
  if (!(this instanceof HmacDRBG))
    return new HmacDRBG(options);
  this.hash = options.hash;
  this.predResist = !!options.predResist;

  this.outLen = this.hash.outSize;
  this.minEntropy = options.minEntropy || this.hash.hmacStrength;

  this._reseed = null;
  this.reseedInterval = null;
  this.K = null;
  this.V = null;

  var entropy = utils.toArray(options.entropy, options.entropyEnc || 'hex');
  var nonce = utils.toArray(options.nonce, options.nonceEnc || 'hex');
  var pers = utils.toArray(options.pers, options.persEnc || 'hex');
  assert(entropy.length >= (this.minEntropy / 8),
         'Not enough entropy. Minimum is: ' + this.minEntropy + ' bits');
  this._init(entropy, nonce, pers);
}
module.exports = HmacDRBG;

HmacDRBG.prototype._init = function init(entropy, nonce, pers) {
  var seed = entropy.concat(nonce).concat(pers);

  this.K = new Array(this.outLen / 8);
  this.V = new Array(this.outLen / 8);
  for (var i = 0; i < this.V.length; i++) {
    this.K[i] = 0x00;
    this.V[i] = 0x01;
  }

  this._update(seed);
  this._reseed = 1;
  this.reseedInterval = 0x1000000000000;  // 2^48
};

HmacDRBG.prototype._hmac = function hmac() {
  return new hash.hmac(this.hash, this.K);
};

HmacDRBG.prototype._update = function update(seed) {
  var kmac = this._hmac()
                 .update(this.V)
                 .update([ 0x00 ]);
  if (seed)
    kmac = kmac.update(seed);
  this.K = kmac.digest();
  this.V = this._hmac().update(this.V).digest();
  if (!seed)
    return;

  this.K = this._hmac()
               .update(this.V)
               .update([ 0x01 ])
               .update(seed)
               .digest();
  this.V = this._hmac().update(this.V).digest();
};

HmacDRBG.prototype.reseed = function reseed(entropy, entropyEnc, add, addEnc) {
  // Optional entropy enc
  if (typeof entropyEnc !== 'string') {
    addEnc = add;
    add = entropyEnc;
    entropyEnc = null;
  }

  entropy = utils.toArray(entropy, entropyEnc);
  add = utils.toArray(add, addEnc);

  assert(entropy.length >= (this.minEntropy / 8),
         'Not enough entropy. Minimum is: ' + this.minEntropy + ' bits');

  this._update(entropy.concat(add || []));
  this._reseed = 1;
};

HmacDRBG.prototype.generate = function generate(len, enc, add, addEnc) {
  if (this._reseed > this.reseedInterval)
    throw new Error('Reseed is required');

  // Optional encoding
  if (typeof enc !== 'string') {
    addEnc = add;
    add = enc;
    enc = null;
  }

  // Optional additional data
  if (add) {
    add = utils.toArray(add, addEnc || 'hex');
    this._update(add);
  }

  var temp = [];
  while (temp.length < len) {
    this.V = this._hmac().update(this.V).digest();
    temp = temp.concat(this.V);
  }

  var res = temp.slice(0, len);
  this._update(add);
  this._reseed++;
  return utils.encode(res, enc);
};

},{"hash.js":230,"minimalistic-assert":287,"minimalistic-crypto-utils":288}],243:[function(require,module,exports){
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
  var e, m
  var eLen = (nBytes * 8) - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var nBits = -7
  var i = isLE ? (nBytes - 1) : 0
  var d = isLE ? -1 : 1
  var s = buffer[offset + i]

  i += d

  e = s & ((1 << (-nBits)) - 1)
  s >>= (-nBits)
  nBits += eLen
  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}

  m = e & ((1 << (-nBits)) - 1)
  e >>= (-nBits)
  nBits += mLen
  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}

  if (e === 0) {
    e = 1 - eBias
  } else if (e === eMax) {
    return m ? NaN : ((s ? -1 : 1) * Infinity)
  } else {
    m = m + Math.pow(2, mLen)
    e = e - eBias
  }
  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}

exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
  var e, m, c
  var eLen = (nBytes * 8) - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
  var i = isLE ? 0 : (nBytes - 1)
  var d = isLE ? 1 : -1
  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0

  value = Math.abs(value)

  if (isNaN(value) || value === Infinity) {
    m = isNaN(value) ? 1 : 0
    e = eMax
  } else {
    e = Math.floor(Math.log(value) / Math.LN2)
    if (value * (c = Math.pow(2, -e)) < 1) {
      e--
      c *= 2
    }
    if (e + eBias >= 1) {
      value += rt / c
    } else {
      value += rt * Math.pow(2, 1 - eBias)
    }
    if (value * c >= 2) {
      e++
      c /= 2
    }

    if (e + eBias >= eMax) {
      m = 0
      e = eMax
    } else if (e + eBias >= 1) {
      m = ((value * c) - 1) * Math.pow(2, mLen)
      e = e + eBias
    } else {
      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
      e = 0
    }
  }

  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}

  e = (e << mLen) | m
  eLen += mLen
  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}

  buffer[offset + i - d] |= s * 128
}

},{}],244:[function(require,module,exports){
(function (global){
'use strict';
var Mutation = global.MutationObserver || global.WebKitMutationObserver;

var scheduleDrain;

{
  if (Mutation) {
    var called = 0;
    var observer = new Mutation(nextTick);
    var element = global.document.createTextNode('');
    observer.observe(element, {
      characterData: true
    });
    scheduleDrain = function () {
      element.data = (called = ++called % 2);
    };
  } else if (!global.setImmediate && typeof global.MessageChannel !== 'undefined') {
    var channel = new global.MessageChannel();
    channel.port1.onmessage = nextTick;
    scheduleDrain = function () {
      channel.port2.postMessage(0);
    };
  } else if ('document' in global && 'onreadystatechange' in global.document.createElement('script')) {
    scheduleDrain = function () {

      // Create a <script> element; its readystatechange event will be fired asynchronously once it is inserted
      // into the document. Do so, thus queuing up the task. Remember to clean up once it's been called.
      var scriptEl = global.document.createElement('script');
      scriptEl.onreadystatechange = function () {
        nextTick();

        scriptEl.onreadystatechange = null;
        scriptEl.parentNode.removeChild(scriptEl);
        scriptEl = null;
      };
      global.document.documentElement.appendChild(scriptEl);
    };
  } else {
    scheduleDrain = function () {
      setTimeout(nextTick, 0);
    };
  }
}

var draining;
var queue = [];
//named nextTick for less confusing stack traces
function nextTick() {
  draining = true;
  var i, oldQueue;
  var len = queue.length;
  while (len) {
    oldQueue = queue;
    queue = [];
    i = -1;
    while (++i < len) {
      oldQueue[i]();
    }
    len = queue.length;
  }
  draining = false;
}

module.exports = immediate;
function immediate(task) {
  if (queue.push(task) === 1 && !draining) {
    scheduleDrain();
  }
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],245:[function(require,module,exports){
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    if (superCtor) {
      ctor.super_ = superCtor
      ctor.prototype = Object.create(superCtor.prototype, {
        constructor: {
          value: ctor,
          enumerable: false,
          writable: true,
          configurable: true
        }
      })
    }
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    if (superCtor) {
      ctor.super_ = superCtor
      var TempCtor = function () {}
      TempCtor.prototype = superCtor.prototype
      ctor.prototype = new TempCtor()
      ctor.prototype.constructor = ctor
    }
  }
}

},{}],246:[function(require,module,exports){
/*!
 * Determine if an object is a Buffer
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */

// The _isBuffer check is for Safari 5-7 support, because it's missing
// Object.prototype.constructor. Remove this eventually
module.exports = function (obj) {
  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
}

function isBuffer (obj) {
  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
}

// For Node v0.10 support. Remove this eventually.
function isSlowBuffer (obj) {
  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
}

},{}],247:[function(require,module,exports){
var toString = {}.toString;

module.exports = Array.isArray || function (arr) {
  return toString.call(arr) == '[object Array]';
};

},{}],248:[function(require,module,exports){
'use strict';
var utils = require('./utils');
var support = require('./support');
// private property
var _keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";


// public method for encoding
exports.encode = function(input) {
    var output = [];
    var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
    var i = 0, len = input.length, remainingBytes = len;

    var isArray = utils.getTypeOf(input) !== "string";
    while (i < input.length) {
        remainingBytes = len - i;

        if (!isArray) {
            chr1 = input.charCodeAt(i++);
            chr2 = i < len ? input.charCodeAt(i++) : 0;
            chr3 = i < len ? input.charCodeAt(i++) : 0;
        } else {
            chr1 = input[i++];
            chr2 = i < len ? input[i++] : 0;
            chr3 = i < len ? input[i++] : 0;
        }

        enc1 = chr1 >> 2;
        enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
        enc3 = remainingBytes > 1 ? (((chr2 & 15) << 2) | (chr3 >> 6)) : 64;
        enc4 = remainingBytes > 2 ? (chr3 & 63) : 64;

        output.push(_keyStr.charAt(enc1) + _keyStr.charAt(enc2) + _keyStr.charAt(enc3) + _keyStr.charAt(enc4));

    }

    return output.join("");
};

// public method for decoding
exports.decode = function(input) {
    var chr1, chr2, chr3;
    var enc1, enc2, enc3, enc4;
    var i = 0, resultIndex = 0;

    var dataUrlPrefix = "data:";

    if (input.substr(0, dataUrlPrefix.length) === dataUrlPrefix) {
        // This is a common error: people give a data url
        // (data:image/png;base64,iVBOR...) with a {base64: true} and
        // wonders why things don't work.
        // We can detect that the string input looks like a data url but we
        // *can't* be sure it is one: removing everything up to the comma would
        // be too dangerous.
        throw new Error("Invalid base64 input, it looks like a data url.");
    }

    input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

    var totalLength = input.length * 3 / 4;
    if(input.charAt(input.length - 1) === _keyStr.charAt(64)) {
        totalLength--;
    }
    if(input.charAt(input.length - 2) === _keyStr.charAt(64)) {
        totalLength--;
    }
    if (totalLength % 1 !== 0) {
        // totalLength is not an integer, the length does not match a valid
        // base64 content. That can happen if:
        // - the input is not a base64 content
        // - the input is *almost* a base64 content, with a extra chars at the
        //   beginning or at the end
        // - the input uses a base64 variant (base64url for example)
        throw new Error("Invalid base64 input, bad content length.");
    }
    var output;
    if (support.uint8array) {
        output = new Uint8Array(totalLength|0);
    } else {
        output = new Array(totalLength|0);
    }

    while (i < input.length) {

        enc1 = _keyStr.indexOf(input.charAt(i++));
        enc2 = _keyStr.indexOf(input.charAt(i++));
        enc3 = _keyStr.indexOf(input.charAt(i++));
        enc4 = _keyStr.indexOf(input.charAt(i++));

        chr1 = (enc1 << 2) | (enc2 >> 4);
        chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
        chr3 = ((enc3 & 3) << 6) | enc4;

        output[resultIndex++] = chr1;

        if (enc3 !== 64) {
            output[resultIndex++] = chr2;
        }
        if (enc4 !== 64) {
            output[resultIndex++] = chr3;
        }

    }

    return output;
};

},{"./support":277,"./utils":279}],249:[function(require,module,exports){
'use strict';

var external = require("./external");
var DataWorker = require('./stream/DataWorker');
var DataLengthProbe = require('./stream/DataLengthProbe');
var Crc32Probe = require('./stream/Crc32Probe');
var DataLengthProbe = require('./stream/DataLengthProbe');

/**
 * Represent a compressed object, with everything needed to decompress it.
 * @constructor
 * @param {number} compressedSize the size of the data compressed.
 * @param {number} uncompressedSize the size of the data after decompression.
 * @param {number} crc32 the crc32 of the decompressed file.
 * @param {object} compression the type of compression, see lib/compressions.js.
 * @param {String|ArrayBuffer|Uint8Array|Buffer} data the compressed data.
 */
function CompressedObject(compressedSize, uncompressedSize, crc32, compression, data) {
    this.compressedSize = compressedSize;
    this.uncompressedSize = uncompressedSize;
    this.crc32 = crc32;
    this.compression = compression;
    this.compressedContent = data;
}

CompressedObject.prototype = {
    /**
     * Create a worker to get the uncompressed content.
     * @return {GenericWorker} the worker.
     */
    getContentWorker : function () {
        var worker = new DataWorker(external.Promise.resolve(this.compressedContent))
        .pipe(this.compression.uncompressWorker())
        .pipe(new DataLengthProbe("data_length"));

        var that = this;
        worker.on("end", function () {
            if(this.streamInfo['data_length'] !== that.uncompressedSize) {
                throw new Error("Bug : uncompressed data size mismatch");
            }
        });
        return worker;
    },
    /**
     * Create a worker to get the compressed content.
     * @return {GenericWorker} the worker.
     */
    getCompressedWorker : function () {
        return new DataWorker(external.Promise.resolve(this.compressedContent))
        .withStreamInfo("compressedSize", this.compressedSize)
        .withStreamInfo("uncompressedSize", this.uncompressedSize)
        .withStreamInfo("crc32", this.crc32)
        .withStreamInfo("compression", this.compression)
        ;
    }
};

/**
 * Chain the given worker with other workers to compress the content with the
 * given compresion.
 * @param {GenericWorker} uncompressedWorker the worker to pipe.
 * @param {Object} compression the compression object.
 * @param {Object} compressionOptions the options to use when compressing.
 * @return {GenericWorker} the new worker compressing the content.
 */
CompressedObject.createWorkerFrom = function (uncompressedWorker, compression, compressionOptions) {
    return uncompressedWorker
    .pipe(new Crc32Probe())
    .pipe(new DataLengthProbe("uncompressedSize"))
    .pipe(compression.compressWorker(compressionOptions))
    .pipe(new DataLengthProbe("compressedSize"))
    .withStreamInfo("compression", compression);
};

module.exports = CompressedObject;

},{"./external":253,"./stream/Crc32Probe":272,"./stream/DataLengthProbe":273,"./stream/DataWorker":274}],250:[function(require,module,exports){
'use strict';

var GenericWorker = require("./stream/GenericWorker");

exports.STORE = {
    magic: "\x00\x00",
    compressWorker : function (compressionOptions) {
        return new GenericWorker("STORE compression");
    },
    uncompressWorker : function () {
        return new GenericWorker("STORE decompression");
    }
};
exports.DEFLATE = require('./flate');

},{"./flate":254,"./stream/GenericWorker":275}],251:[function(require,module,exports){
'use strict';

var utils = require('./utils');

/**
 * The following functions come from pako, from pako/lib/zlib/crc32.js
 * released under the MIT license, see pako https://github.com/nodeca/pako/
 */

// Use ordinary array, since untyped makes no boost here
function makeTable() {
    var c, table = [];

    for(var n =0; n < 256; n++){
        c = n;
        for(var k =0; k < 8; k++){
            c = ((c&1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));
        }
        table[n] = c;
    }

    return table;
}

// Create table on load. Just 255 signed longs. Not a problem.
var crcTable = makeTable();


function crc32(crc, buf, len, pos) {
    var t = crcTable, end = pos + len;

    crc = crc ^ (-1);

    for (var i = pos; i < end; i++ ) {
        crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];
    }

    return (crc ^ (-1)); // >>> 0;
}

// That's all for the pako functions.

/**
 * Compute the crc32 of a string.
 * This is almost the same as the function crc32, but for strings. Using the
 * same function for the two use cases leads to horrible performances.
 * @param {Number} crc the starting value of the crc.
 * @param {String} str the string to use.
 * @param {Number} len the length of the string.
 * @param {Number} pos the starting position for the crc32 computation.
 * @return {Number} the computed crc32.
 */
function crc32str(crc, str, len, pos) {
    var t = crcTable, end = pos + len;

    crc = crc ^ (-1);

    for (var i = pos; i < end; i++ ) {
        crc = (crc >>> 8) ^ t[(crc ^ str.charCodeAt(i)) & 0xFF];
    }

    return (crc ^ (-1)); // >>> 0;
}

module.exports = function crc32wrapper(input, crc) {
    if (typeof input === "undefined" || !input.length) {
        return 0;
    }

    var isArray = utils.getTypeOf(input) !== "string";

    if(isArray) {
        return crc32(crc|0, input, input.length, 0);
    } else {
        return crc32str(crc|0, input, input.length, 0);
    }
};

},{"./utils":279}],252:[function(require,module,exports){
'use strict';
exports.base64 = false;
exports.binary = false;
exports.dir = false;
exports.createFolders = true;
exports.date = null;
exports.compression = null;
exports.compressionOptions = null;
exports.comment = null;
exports.unixPermissions = null;
exports.dosPermissions = null;

},{}],253:[function(require,module,exports){
/* global Promise */
'use strict';

// load the global object first:
// - it should be better integrated in the system (unhandledRejection in node)
// - the environment may have a custom Promise implementation (see zone.js)
var ES6Promise = null;
if (typeof Promise !== "undefined") {
    ES6Promise = Promise;
} else {
    ES6Promise = require("lie");
}

/**
 * Let the user use/change some implementations.
 */
module.exports = {
    Promise: ES6Promise
};

},{"lie":283}],254:[function(require,module,exports){
'use strict';
var USE_TYPEDARRAY = (typeof Uint8Array !== 'undefined') && (typeof Uint16Array !== 'undefined') && (typeof Uint32Array !== 'undefined');

var pako = require("pako");
var utils = require("./utils");
var GenericWorker = require("./stream/GenericWorker");

var ARRAY_TYPE = USE_TYPEDARRAY ? "uint8array" : "array";

exports.magic = "\x08\x00";

/**
 * Create a worker that uses pako to inflate/deflate.
 * @constructor
 * @param {String} action the name of the pako function to call : either "Deflate" or "Inflate".
 * @param {Object} options the options to use when (de)compressing.
 */
function FlateWorker(action, options) {
    GenericWorker.call(this, "FlateWorker/" + action);

    this._pako = null;
    this._pakoAction = action;
    this._pakoOptions = options;
    // the `meta` object from the last chunk received
    // this allow this worker to pass around metadata
    this.meta = {};
}

utils.inherits(FlateWorker, GenericWorker);

/**
 * @see GenericWorker.processChunk
 */
FlateWorker.prototype.processChunk = function (chunk) {
    this.meta = chunk.meta;
    if (this._pako === null) {
        this._createPako();
    }
    this._pako.push(utils.transformTo(ARRAY_TYPE, chunk.data), false);
};

/**
 * @see GenericWorker.flush
 */
FlateWorker.prototype.flush = function () {
    GenericWorker.prototype.flush.call(this);
    if (this._pako === null) {
        this._createPako();
    }
    this._pako.push([], true);
};
/**
 * @see GenericWorker.cleanUp
 */
FlateWorker.prototype.cleanUp = function () {
    GenericWorker.prototype.cleanUp.call(this);
    this._pako = null;
};

/**
 * Create the _pako object.
 * TODO: lazy-loading this object isn't the best solution but it's the
 * quickest. The best solution is to lazy-load the worker list. See also the
 * issue #446.
 */
FlateWorker.prototype._createPako = function () {
    this._pako = new pako[this._pakoAction]({
        raw: true,
        level: this._pakoOptions.level || -1 // default compression
    });
    var self = this;
    this._pako.onData = function(data) {
        self.push({
            data : data,
            meta : self.meta
        });
    };
};

exports.compressWorker = function (compressionOptions) {
    return new FlateWorker("Deflate", compressionOptions);
};
exports.uncompressWorker = function () {
    return new FlateWorker("Inflate", {});
};

},{"./stream/GenericWorker":275,"./utils":279,"pako":289}],255:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var GenericWorker = require('../stream/GenericWorker');
var utf8 = require('../utf8');
var crc32 = require('../crc32');
var signature = require('../signature');

/**
 * Transform an integer into a string in hexadecimal.
 * @private
 * @param {number} dec the number to convert.
 * @param {number} bytes the number of bytes to generate.
 * @returns {string} the result.
 */
var decToHex = function(dec, bytes) {
    var hex = "", i;
    for (i = 0; i < bytes; i++) {
        hex += String.fromCharCode(dec & 0xff);
        dec = dec >>> 8;
    }
    return hex;
};

/**
 * Generate the UNIX part of the external file attributes.
 * @param {Object} unixPermissions the unix permissions or null.
 * @param {Boolean} isDir true if the entry is a directory, false otherwise.
 * @return {Number} a 32 bit integer.
 *
 * adapted from http://unix.stackexchange.com/questions/14705/the-zip-formats-external-file-attribute :
 *
 * TTTTsstrwxrwxrwx0000000000ADVSHR
 * ^^^^____________________________ file type, see zipinfo.c (UNX_*)
 *     ^^^_________________________ setuid, setgid, sticky
 *        ^^^^^^^^^________________ permissions
 *                 ^^^^^^^^^^______ not used ?
 *                           ^^^^^^ DOS attribute bits : Archive, Directory, Volume label, System file, Hidden, Read only
 */
var generateUnixExternalFileAttr = function (unixPermissions, isDir) {

    var result = unixPermissions;
    if (!unixPermissions) {
        // I can't use octal values in strict mode, hence the hexa.
        //  040775 => 0x41fd
        // 0100664 => 0x81b4
        result = isDir ? 0x41fd : 0x81b4;
    }
    return (result & 0xFFFF) << 16;
};

/**
 * Generate the DOS part of the external file attributes.
 * @param {Object} dosPermissions the dos permissions or null.
 * @param {Boolean} isDir true if the entry is a directory, false otherwise.
 * @return {Number} a 32 bit integer.
 *
 * Bit 0     Read-Only
 * Bit 1     Hidden
 * Bit 2     System
 * Bit 3     Volume Label
 * Bit 4     Directory
 * Bit 5     Archive
 */
var generateDosExternalFileAttr = function (dosPermissions, isDir) {

    // the dir flag is already set for compatibility
    return (dosPermissions || 0)  & 0x3F;
};

/**
 * Generate the various parts used in the construction of the final zip file.
 * @param {Object} streamInfo the hash with informations about the compressed file.
 * @param {Boolean} streamedContent is the content streamed ?
 * @param {Boolean} streamingEnded is the stream finished ?
 * @param {number} offset the current offset from the start of the zip file.
 * @param {String} platform let's pretend we are this platform (change platform dependents fields)
 * @param {Function} encodeFileName the function to encode the file name / comment.
 * @return {Object} the zip parts.
 */
var generateZipParts = function(streamInfo, streamedContent, streamingEnded, offset, platform, encodeFileName) {
    var file = streamInfo['file'],
    compression = streamInfo['compression'],
    useCustomEncoding = encodeFileName !== utf8.utf8encode,
    encodedFileName = utils.transformTo("string", encodeFileName(file.name)),
    utfEncodedFileName = utils.transformTo("string", utf8.utf8encode(file.name)),
    comment = file.comment,
    encodedComment = utils.transformTo("string", encodeFileName(comment)),
    utfEncodedComment = utils.transformTo("string", utf8.utf8encode(comment)),
    useUTF8ForFileName = utfEncodedFileName.length !== file.name.length,
    useUTF8ForComment = utfEncodedComment.length !== comment.length,
    dosTime,
    dosDate,
    extraFields = "",
    unicodePathExtraField = "",
    unicodeCommentExtraField = "",
    dir = file.dir,
    date = file.date;


    var dataInfo = {
        crc32 : 0,
        compressedSize : 0,
        uncompressedSize : 0
    };

    // if the content is streamed, the sizes/crc32 are only available AFTER
    // the end of the stream.
    if (!streamedContent || streamingEnded) {
        dataInfo.crc32 = streamInfo['crc32'];
        dataInfo.compressedSize = streamInfo['compressedSize'];
        dataInfo.uncompressedSize = streamInfo['uncompressedSize'];
    }

    var bitflag = 0;
    if (streamedContent) {
        // Bit 3: the sizes/crc32 are set to zero in the local header.
        // The correct values are put in the data descriptor immediately
        // following the compressed data.
        bitflag |= 0x0008;
    }
    if (!useCustomEncoding && (useUTF8ForFileName || useUTF8ForComment)) {
        // Bit 11: Language encoding flag (EFS).
        bitflag |= 0x0800;
    }


    var extFileAttr = 0;
    var versionMadeBy = 0;
    if (dir) {
        // dos or unix, we set the dos dir flag
        extFileAttr |= 0x00010;
    }
    if(platform === "UNIX") {
        versionMadeBy = 0x031E; // UNIX, version 3.0
        extFileAttr |= generateUnixExternalFileAttr(file.unixPermissions, dir);
    } else { // DOS or other, fallback to DOS
        versionMadeBy = 0x0014; // DOS, version 2.0
        extFileAttr |= generateDosExternalFileAttr(file.dosPermissions, dir);
    }

    // date
    // @see http://www.delorie.com/djgpp/doc/rbinter/it/52/13.html
    // @see http://www.delorie.com/djgpp/doc/rbinter/it/65/16.html
    // @see http://www.delorie.com/djgpp/doc/rbinter/it/66/16.html

    dosTime = date.getUTCHours();
    dosTime = dosTime << 6;
    dosTime = dosTime | date.getUTCMinutes();
    dosTime = dosTime << 5;
    dosTime = dosTime | date.getUTCSeconds() / 2;

    dosDate = date.getUTCFullYear() - 1980;
    dosDate = dosDate << 4;
    dosDate = dosDate | (date.getUTCMonth() + 1);
    dosDate = dosDate << 5;
    dosDate = dosDate | date.getUTCDate();

    if (useUTF8ForFileName) {
        // set the unicode path extra field. unzip needs at least one extra
        // field to correctly handle unicode path, so using the path is as good
        // as any other information. This could improve the situation with
        // other archive managers too.
        // This field is usually used without the utf8 flag, with a non
        // unicode path in the header (winrar, winzip). This helps (a bit)
        // with the messy Windows' default compressed folders feature but
        // breaks on p7zip which doesn't seek the unicode path extra field.
        // So for now, UTF-8 everywhere !
        unicodePathExtraField =
            // Version
            decToHex(1, 1) +
            // NameCRC32
            decToHex(crc32(encodedFileName), 4) +
            // UnicodeName
            utfEncodedFileName;

        extraFields +=
            // Info-ZIP Unicode Path Extra Field
            "\x75\x70" +
            // size
            decToHex(unicodePathExtraField.length, 2) +
            // content
            unicodePathExtraField;
    }

    if(useUTF8ForComment) {

        unicodeCommentExtraField =
            // Version
            decToHex(1, 1) +
            // CommentCRC32
            decToHex(crc32(encodedComment), 4) +
            // UnicodeName
            utfEncodedComment;

        extraFields +=
            // Info-ZIP Unicode Path Extra Field
            "\x75\x63" +
            // size
            decToHex(unicodeCommentExtraField.length, 2) +
            // content
            unicodeCommentExtraField;
    }

    var header = "";

    // version needed to extract
    header += "\x0A\x00";
    // general purpose bit flag
    header += decToHex(bitflag, 2);
    // compression method
    header += compression.magic;
    // last mod file time
    header += decToHex(dosTime, 2);
    // last mod file date
    header += decToHex(dosDate, 2);
    // crc-32
    header += decToHex(dataInfo.crc32, 4);
    // compressed size
    header += decToHex(dataInfo.compressedSize, 4);
    // uncompressed size
    header += decToHex(dataInfo.uncompressedSize, 4);
    // file name length
    header += decToHex(encodedFileName.length, 2);
    // extra field length
    header += decToHex(extraFields.length, 2);


    var fileRecord = signature.LOCAL_FILE_HEADER + header + encodedFileName + extraFields;

    var dirRecord = signature.CENTRAL_FILE_HEADER +
        // version made by (00: DOS)
        decToHex(versionMadeBy, 2) +
        // file header (common to file and central directory)
        header +
        // file comment length
        decToHex(encodedComment.length, 2) +
        // disk number start
        "\x00\x00" +
        // internal file attributes TODO
        "\x00\x00" +
        // external file attributes
        decToHex(extFileAttr, 4) +
        // relative offset of local header
        decToHex(offset, 4) +
        // file name
        encodedFileName +
        // extra field
        extraFields +
        // file comment
        encodedComment;

    return {
        fileRecord: fileRecord,
        dirRecord: dirRecord
    };
};

/**
 * Generate the EOCD record.
 * @param {Number} entriesCount the number of entries in the zip file.
 * @param {Number} centralDirLength the length (in bytes) of the central dir.
 * @param {Number} localDirLength the length (in bytes) of the local dir.
 * @param {String} comment the zip file comment as a binary string.
 * @param {Function} encodeFileName the function to encode the comment.
 * @return {String} the EOCD record.
 */
var generateCentralDirectoryEnd = function (entriesCount, centralDirLength, localDirLength, comment, encodeFileName) {
    var dirEnd = "";
    var encodedComment = utils.transformTo("string", encodeFileName(comment));

    // end of central dir signature
    dirEnd = signature.CENTRAL_DIRECTORY_END +
        // number of this disk
        "\x00\x00" +
        // number of the disk with the start of the central directory
        "\x00\x00" +
        // total number of entries in the central directory on this disk
        decToHex(entriesCount, 2) +
        // total number of entries in the central directory
        decToHex(entriesCount, 2) +
        // size of the central directory   4 bytes
        decToHex(centralDirLength, 4) +
        // offset of start of central directory with respect to the starting disk number
        decToHex(localDirLength, 4) +
        // .ZIP file comment length
        decToHex(encodedComment.length, 2) +
        // .ZIP file comment
        encodedComment;

    return dirEnd;
};

/**
 * Generate data descriptors for a file entry.
 * @param {Object} streamInfo the hash generated by a worker, containing informations
 * on the file entry.
 * @return {String} the data descriptors.
 */
var generateDataDescriptors = function (streamInfo) {
    var descriptor = "";
    descriptor = signature.DATA_DESCRIPTOR +
        // crc-32                          4 bytes
        decToHex(streamInfo['crc32'], 4) +
        // compressed size                 4 bytes
        decToHex(streamInfo['compressedSize'], 4) +
        // uncompressed size               4 bytes
        decToHex(streamInfo['uncompressedSize'], 4);

    return descriptor;
};


/**
 * A worker to concatenate other workers to create a zip file.
 * @param {Boolean} streamFiles `true` to stream the content of the files,
 * `false` to accumulate it.
 * @param {String} comment the comment to use.
 * @param {String} platform the platform to use, "UNIX" or "DOS".
 * @param {Function} encodeFileName the function to encode file names and comments.
 */
function ZipFileWorker(streamFiles, comment, platform, encodeFileName) {
    GenericWorker.call(this, "ZipFileWorker");
    // The number of bytes written so far. This doesn't count accumulated chunks.
    this.bytesWritten = 0;
    // The comment of the zip file
    this.zipComment = comment;
    // The platform "generating" the zip file.
    this.zipPlatform = platform;
    // the function to encode file names and comments.
    this.encodeFileName = encodeFileName;
    // Should we stream the content of the files ?
    this.streamFiles = streamFiles;
    // If `streamFiles` is false, we will need to accumulate the content of the
    // files to calculate sizes / crc32 (and write them *before* the content).
    // This boolean indicates if we are accumulating chunks (it will change a lot
    // during the lifetime of this worker).
    this.accumulate = false;
    // The buffer receiving chunks when accumulating content.
    this.contentBuffer = [];
    // The list of generated directory records.
    this.dirRecords = [];
    // The offset (in bytes) from the beginning of the zip file for the current source.
    this.currentSourceOffset = 0;
    // The total number of entries in this zip file.
    this.entriesCount = 0;
    // the name of the file currently being added, null when handling the end of the zip file.
    // Used for the emited metadata.
    this.currentFile = null;



    this._sources = [];
}
utils.inherits(ZipFileWorker, GenericWorker);

/**
 * @see GenericWorker.push
 */
ZipFileWorker.prototype.push = function (chunk) {

    var currentFilePercent = chunk.meta.percent || 0;
    var entriesCount = this.entriesCount;
    var remainingFiles = this._sources.length;

    if(this.accumulate) {
        this.contentBuffer.push(chunk);
    } else {
        this.bytesWritten += chunk.data.length;

        GenericWorker.prototype.push.call(this, {
            data : chunk.data,
            meta : {
                currentFile : this.currentFile,
                percent : entriesCount ? (currentFilePercent + 100 * (entriesCount - remainingFiles - 1)) / entriesCount : 100
            }
        });
    }
};

/**
 * The worker started a new source (an other worker).
 * @param {Object} streamInfo the streamInfo object from the new source.
 */
ZipFileWorker.prototype.openedSource = function (streamInfo) {
    this.currentSourceOffset = this.bytesWritten;
    this.currentFile = streamInfo['file'].name;

    var streamedContent = this.streamFiles && !streamInfo['file'].dir;

    // don't stream folders (because they don't have any content)
    if(streamedContent) {
        var record = generateZipParts(streamInfo, streamedContent, false, this.currentSourceOffset, this.zipPlatform, this.encodeFileName);
        this.push({
            data : record.fileRecord,
            meta : {percent:0}
        });
    } else {
        // we need to wait for the whole file before pushing anything
        this.accumulate = true;
    }
};

/**
 * The worker finished a source (an other worker).
 * @param {Object} streamInfo the streamInfo object from the finished source.
 */
ZipFileWorker.prototype.closedSource = function (streamInfo) {
    this.accumulate = false;
    var streamedContent = this.streamFiles && !streamInfo['file'].dir;
    var record = generateZipParts(streamInfo, streamedContent, true, this.currentSourceOffset, this.zipPlatform, this.encodeFileName);

    this.dirRecords.push(record.dirRecord);
    if(streamedContent) {
        // after the streamed file, we put data descriptors
        this.push({
            data : generateDataDescriptors(streamInfo),
            meta : {percent:100}
        });
    } else {
        // the content wasn't streamed, we need to push everything now
        // first the file record, then the content
        this.push({
            data : record.fileRecord,
            meta : {percent:0}
        });
        while(this.contentBuffer.length) {
            this.push(this.contentBuffer.shift());
        }
    }
    this.currentFile = null;
};

/**
 * @see GenericWorker.flush
 */
ZipFileWorker.prototype.flush = function () {

    var localDirLength = this.bytesWritten;
    for(var i = 0; i < this.dirRecords.length; i++) {
        this.push({
            data : this.dirRecords[i],
            meta : {percent:100}
        });
    }
    var centralDirLength = this.bytesWritten - localDirLength;

    var dirEnd = generateCentralDirectoryEnd(this.dirRecords.length, centralDirLength, localDirLength, this.zipComment, this.encodeFileName);

    this.push({
        data : dirEnd,
        meta : {percent:100}
    });
};

/**
 * Prepare the next source to be read.
 */
ZipFileWorker.prototype.prepareNextSource = function () {
    this.previous = this._sources.shift();
    this.openedSource(this.previous.streamInfo);
    if (this.isPaused) {
        this.previous.pause();
    } else {
        this.previous.resume();
    }
};

/**
 * @see GenericWorker.registerPrevious
 */
ZipFileWorker.prototype.registerPrevious = function (previous) {
    this._sources.push(previous);
    var self = this;

    previous.on('data', function (chunk) {
        self.processChunk(chunk);
    });
    previous.on('end', function () {
        self.closedSource(self.previous.streamInfo);
        if(self._sources.length) {
            self.prepareNextSource();
        } else {
            self.end();
        }
    });
    previous.on('error', function (e) {
        self.error(e);
    });
    return this;
};

/**
 * @see GenericWorker.resume
 */
ZipFileWorker.prototype.resume = function () {
    if(!GenericWorker.prototype.resume.call(this)) {
        return false;
    }

    if (!this.previous && this._sources.length) {
        this.prepareNextSource();
        return true;
    }
    if (!this.previous && !this._sources.length && !this.generatedError) {
        this.end();
        return true;
    }
};

/**
 * @see GenericWorker.error
 */
ZipFileWorker.prototype.error = function (e) {
    var sources = this._sources;
    if(!GenericWorker.prototype.error.call(this, e)) {
        return false;
    }
    for(var i = 0; i < sources.length; i++) {
        try {
            sources[i].error(e);
        } catch(e) {
            // the `error` exploded, nothing to do
        }
    }
    return true;
};

/**
 * @see GenericWorker.lock
 */
ZipFileWorker.prototype.lock = function () {
    GenericWorker.prototype.lock.call(this);
    var sources = this._sources;
    for(var i = 0; i < sources.length; i++) {
        sources[i].lock();
    }
};

module.exports = ZipFileWorker;

},{"../crc32":251,"../signature":270,"../stream/GenericWorker":275,"../utf8":278,"../utils":279}],256:[function(require,module,exports){
'use strict';

var compressions = require('../compressions');
var ZipFileWorker = require('./ZipFileWorker');

/**
 * Find the compression to use.
 * @param {String} fileCompression the compression defined at the file level, if any.
 * @param {String} zipCompression the compression defined at the load() level.
 * @return {Object} the compression object to use.
 */
var getCompression = function (fileCompression, zipCompression) {

    var compressionName = fileCompression || zipCompression;
    var compression = compressions[compressionName];
    if (!compression) {
        throw new Error(compressionName + " is not a valid compression method !");
    }
    return compression;
};

/**
 * Create a worker to generate a zip file.
 * @param {JSZip} zip the JSZip instance at the right root level.
 * @param {Object} options to generate the zip file.
 * @param {String} comment the comment to use.
 */
exports.generateWorker = function (zip, options, comment) {

    var zipFileWorker = new ZipFileWorker(options.streamFiles, comment, options.platform, options.encodeFileName);
    var entriesCount = 0;
    try {

        zip.forEach(function (relativePath, file) {
            entriesCount++;
            var compression = getCompression(file.options.compression, options.compression);
            var compressionOptions = file.options.compressionOptions || options.compressionOptions || {};
            var dir = file.dir, date = file.date;

            file._compressWorker(compression, compressionOptions)
            .withStreamInfo("file", {
                name : relativePath,
                dir : dir,
                date : date,
                comment : file.comment || "",
                unixPermissions : file.unixPermissions,
                dosPermissions : file.dosPermissions
            })
            .pipe(zipFileWorker);
        });
        zipFileWorker.entriesCount = entriesCount;
    } catch (e) {
        zipFileWorker.error(e);
    }

    return zipFileWorker;
};

},{"../compressions":250,"./ZipFileWorker":255}],257:[function(require,module,exports){
'use strict';

/**
 * Representation a of zip file in js
 * @constructor
 */
function JSZip() {
    // if this constructor is used without `new`, it adds `new` before itself:
    if(!(this instanceof JSZip)) {
        return new JSZip();
    }

    if(arguments.length) {
        throw new Error("The constructor with parameters has been removed in JSZip 3.0, please check the upgrade guide.");
    }

    // object containing the files :
    // {
    //   "folder/" : {...},
    //   "folder/data.txt" : {...}
    // }
    this.files = {};

    this.comment = null;

    // Where we are in the hierarchy
    this.root = "";
    this.clone = function() {
        var newObj = new JSZip();
        for (var i in this) {
            if (typeof this[i] !== "function") {
                newObj[i] = this[i];
            }
        }
        return newObj;
    };
}
JSZip.prototype = require('./object');
JSZip.prototype.loadAsync = require('./load');
JSZip.support = require('./support');
JSZip.defaults = require('./defaults');

// TODO find a better way to handle this version,
// a require('package.json').version doesn't work with webpack, see #327
JSZip.version = "3.2.0";

JSZip.loadAsync = function (content, options) {
    return new JSZip().loadAsync(content, options);
};

JSZip.external = require("./external");
module.exports = JSZip;

},{"./defaults":252,"./external":253,"./load":258,"./object":262,"./support":277}],258:[function(require,module,exports){
'use strict';
var utils = require('./utils');
var external = require("./external");
var utf8 = require('./utf8');
var utils = require('./utils');
var ZipEntries = require('./zipEntries');
var Crc32Probe = require('./stream/Crc32Probe');
var nodejsUtils = require("./nodejsUtils");

/**
 * Check the CRC32 of an entry.
 * @param {ZipEntry} zipEntry the zip entry to check.
 * @return {Promise} the result.
 */
function checkEntryCRC32(zipEntry) {
    return new external.Promise(function (resolve, reject) {
        var worker = zipEntry.decompressed.getContentWorker().pipe(new Crc32Probe());
        worker.on("error", function (e) {
            reject(e);
        })
        .on("end", function () {
            if (worker.streamInfo.crc32 !== zipEntry.decompressed.crc32) {
                reject(new Error("Corrupted zip : CRC32 mismatch"));
            } else {
                resolve();
            }
        })
        .resume();
    });
}

module.exports = function(data, options) {
    var zip = this;
    options = utils.extend(options || {}, {
        base64: false,
        checkCRC32: false,
        optimizedBinaryString: false,
        createFolders: false,
        decodeFileName: utf8.utf8decode
    });

    if (nodejsUtils.isNode && nodejsUtils.isStream(data)) {
        return external.Promise.reject(new Error("JSZip can't accept a stream when loading a zip file."));
    }

    return utils.prepareContent("the loaded zip file", data, true, options.optimizedBinaryString, options.base64)
    .then(function(data) {
        var zipEntries = new ZipEntries(options);
        zipEntries.load(data);
        return zipEntries;
    }).then(function checkCRC32(zipEntries) {
        var promises = [external.Promise.resolve(zipEntries)];
        var files = zipEntries.files;
        if (options.checkCRC32) {
            for (var i = 0; i < files.length; i++) {
                promises.push(checkEntryCRC32(files[i]));
            }
        }
        return external.Promise.all(promises);
    }).then(function addFiles(results) {
        var zipEntries = results.shift();
        var files = zipEntries.files;
        for (var i = 0; i < files.length; i++) {
            var input = files[i];
            zip.file(input.fileNameStr, input.decompressed, {
                binary: true,
                optimizedBinaryString: true,
                date: input.date,
                dir: input.dir,
                comment : input.fileCommentStr.length ? input.fileCommentStr : null,
                unixPermissions : input.unixPermissions,
                dosPermissions : input.dosPermissions,
                createFolders: options.createFolders
            });
        }
        if (zipEntries.zipComment.length) {
            zip.comment = zipEntries.zipComment;
        }

        return zip;
    });
};

},{"./external":253,"./nodejsUtils":261,"./stream/Crc32Probe":272,"./utf8":278,"./utils":279,"./zipEntries":280}],259:[function(require,module,exports){
"use strict";

var utils = require('../utils');
var GenericWorker = require('../stream/GenericWorker');

/**
 * A worker that use a nodejs stream as source.
 * @constructor
 * @param {String} filename the name of the file entry for this stream.
 * @param {Readable} stream the nodejs stream.
 */
function NodejsStreamInputAdapter(filename, stream) {
    GenericWorker.call(this, "Nodejs stream input adapter for " + filename);
    this._upstreamEnded = false;
    this._bindStream(stream);
}

utils.inherits(NodejsStreamInputAdapter, GenericWorker);

/**
 * Prepare the stream and bind the callbacks on it.
 * Do this ASAP on node 0.10 ! A lazy binding doesn't always work.
 * @param {Stream} stream the nodejs stream to use.
 */
NodejsStreamInputAdapter.prototype._bindStream = function (stream) {
    var self = this;
    this._stream = stream;
    stream.pause();
    stream
    .on("data", function (chunk) {
        self.push({
            data: chunk,
            meta : {
                percent : 0
            }
        });
    })
    .on("error", function (e) {
        if(self.isPaused) {
            this.generatedError = e;
        } else {
            self.error(e);
        }
    })
    .on("end", function () {
        if(self.isPaused) {
            self._upstreamEnded = true;
        } else {
            self.end();
        }
    });
};
NodejsStreamInputAdapter.prototype.pause = function () {
    if(!GenericWorker.prototype.pause.call(this)) {
        return false;
    }
    this._stream.pause();
    return true;
};
NodejsStreamInputAdapter.prototype.resume = function () {
    if(!GenericWorker.prototype.resume.call(this)) {
        return false;
    }

    if(this._upstreamEnded) {
        this.end();
    } else {
        this._stream.resume();
    }

    return true;
};

module.exports = NodejsStreamInputAdapter;

},{"../stream/GenericWorker":275,"../utils":279}],260:[function(require,module,exports){
'use strict';

var Readable = require('readable-stream').Readable;

var utils = require('../utils');
utils.inherits(NodejsStreamOutputAdapter, Readable);

/**
* A nodejs stream using a worker as source.
* @see the SourceWrapper in http://nodejs.org/api/stream.html
* @constructor
* @param {StreamHelper} helper the helper wrapping the worker
* @param {Object} options the nodejs stream options
* @param {Function} updateCb the update callback.
*/
function NodejsStreamOutputAdapter(helper, options, updateCb) {
    Readable.call(this, options);
    this._helper = helper;

    var self = this;
    helper.on("data", function (data, meta) {
        if (!self.push(data)) {
            self._helper.pause();
        }
        if(updateCb) {
            updateCb(meta);
        }
    })
    .on("error", function(e) {
        self.emit('error', e);
    })
    .on("end", function () {
        self.push(null);
    });
}


NodejsStreamOutputAdapter.prototype._read = function() {
    this._helper.resume();
};

module.exports = NodejsStreamOutputAdapter;

},{"../utils":279,"readable-stream":263}],261:[function(require,module,exports){
(function (Buffer){
'use strict';

module.exports = {
    /**
     * True if this is running in Nodejs, will be undefined in a browser.
     * In a browser, browserify won't include this file and the whole module
     * will be resolved an empty object.
     */
    isNode : typeof Buffer !== "undefined",
    /**
     * Create a new nodejs Buffer from an existing content.
     * @param {Object} data the data to pass to the constructor.
     * @param {String} encoding the encoding to use.
     * @return {Buffer} a new Buffer.
     */
    newBufferFrom: function(data, encoding) {
        if (Buffer.from && Buffer.from !== Uint8Array.from) {
            return Buffer.from(data, encoding);
        } else {
            if (typeof data === "number") {
                // Safeguard for old Node.js versions. On newer versions,
                // Buffer.from(number) / Buffer(number, encoding) already throw.
                throw new Error("The \"data\" argument must not be a number");
            }
            return new Buffer(data, encoding);
        }
    },
    /**
     * Create a new nodejs Buffer with the specified size.
     * @param {Integer} size the size of the buffer.
     * @return {Buffer} a new Buffer.
     */
    allocBuffer: function (size) {
        if (Buffer.alloc) {
            return Buffer.alloc(size);
        } else {
            var buf = new Buffer(size);
            buf.fill(0);
            return buf;
        }
    },
    /**
     * Find out if an object is a Buffer.
     * @param {Object} b the object to test.
     * @return {Boolean} true if the object is a Buffer, false otherwise.
     */
    isBuffer : function(b){
        return Buffer.isBuffer(b);
    },

    isStream : function (obj) {
        return obj &&
            typeof obj.on === "function" &&
            typeof obj.pause === "function" &&
            typeof obj.resume === "function";
    }
};

}).call(this,require("buffer").Buffer)
},{"buffer":168}],262:[function(require,module,exports){
'use strict';
var utf8 = require('./utf8');
var utils = require('./utils');
var GenericWorker = require('./stream/GenericWorker');
var StreamHelper = require('./stream/StreamHelper');
var defaults = require('./defaults');
var CompressedObject = require('./compressedObject');
var ZipObject = require('./zipObject');
var generate = require("./generate");
var nodejsUtils = require("./nodejsUtils");
var NodejsStreamInputAdapter = require("./nodejs/NodejsStreamInputAdapter");


/**
 * Add a file in the current folder.
 * @private
 * @param {string} name the name of the file
 * @param {String|ArrayBuffer|Uint8Array|Buffer} data the data of the file
 * @param {Object} originalOptions the options of the file
 * @return {Object} the new file.
 */
var fileAdd = function(name, data, originalOptions) {
    // be sure sub folders exist
    var dataType = utils.getTypeOf(data),
        parent;


    /*
     * Correct options.
     */

    var o = utils.extend(originalOptions || {}, defaults);
    o.date = o.date || new Date();
    if (o.compression !== null) {
        o.compression = o.compression.toUpperCase();
    }

    if (typeof o.unixPermissions === "string") {
        o.unixPermissions = parseInt(o.unixPermissions, 8);
    }

    // UNX_IFDIR  0040000 see zipinfo.c
    if (o.unixPermissions && (o.unixPermissions & 0x4000)) {
        o.dir = true;
    }
    // Bit 4    Directory
    if (o.dosPermissions && (o.dosPermissions & 0x0010)) {
        o.dir = true;
    }

    if (o.dir) {
        name = forceTrailingSlash(name);
    }
    if (o.createFolders && (parent = parentFolder(name))) {
        folderAdd.call(this, parent, true);
    }

    var isUnicodeString = dataType === "string" && o.binary === false && o.base64 === false;
    if (!originalOptions || typeof originalOptions.binary === "undefined") {
        o.binary = !isUnicodeString;
    }


    var isCompressedEmpty = (data instanceof CompressedObject) && data.uncompressedSize === 0;

    if (isCompressedEmpty || o.dir || !data || data.length === 0) {
        o.base64 = false;
        o.binary = true;
        data = "";
        o.compression = "STORE";
        dataType = "string";
    }

    /*
     * Convert content to fit.
     */

    var zipObjectContent = null;
    if (data instanceof CompressedObject || data instanceof GenericWorker) {
        zipObjectContent = data;
    } else if (nodejsUtils.isNode && nodejsUtils.isStream(data)) {
        zipObjectContent = new NodejsStreamInputAdapter(name, data);
    } else {
        zipObjectContent = utils.prepareContent(name, data, o.binary, o.optimizedBinaryString, o.base64);
    }

    var object = new ZipObject(name, zipObjectContent, o);
    this.files[name] = object;
    /*
    TODO: we can't throw an exception because we have async promises
    (we can have a promise of a Date() for example) but returning a
    promise is useless because file(name, data) returns the JSZip
    object for chaining. Should we break that to allow the user
    to catch the error ?

    return external.Promise.resolve(zipObjectContent)
    .then(function () {
        return object;
    });
    */
};

/**
 * Find the parent folder of the path.
 * @private
 * @param {string} path the path to use
 * @return {string} the parent folder, or ""
 */
var parentFolder = function (path) {
    if (path.slice(-1) === '/') {
        path = path.substring(0, path.length - 1);
    }
    var lastSlash = path.lastIndexOf('/');
    return (lastSlash > 0) ? path.substring(0, lastSlash) : "";
};

/**
 * Returns the path with a slash at the end.
 * @private
 * @param {String} path the path to check.
 * @return {String} the path with a trailing slash.
 */
var forceTrailingSlash = function(path) {
    // Check the name ends with a /
    if (path.slice(-1) !== "/") {
        path += "/"; // IE doesn't like substr(-1)
    }
    return path;
};

/**
 * Add a (sub) folder in the current folder.
 * @private
 * @param {string} name the folder's name
 * @param {boolean=} [createFolders] If true, automatically create sub
 *  folders. Defaults to false.
 * @return {Object} the new folder.
 */
var folderAdd = function(name, createFolders) {
    createFolders = (typeof createFolders !== 'undefined') ? createFolders : defaults.createFolders;

    name = forceTrailingSlash(name);

    // Does this folder already exist?
    if (!this.files[name]) {
        fileAdd.call(this, name, null, {
            dir: true,
            createFolders: createFolders
        });
    }
    return this.files[name];
};

/**
* Cross-window, cross-Node-context regular expression detection
* @param  {Object}  object Anything
* @return {Boolean}        true if the object is a regular expression,
* false otherwise
*/
function isRegExp(object) {
    return Object.prototype.toString.call(object) === "[object RegExp]";
}

// return the actual prototype of JSZip
var out = {
    /**
     * @see loadAsync
     */
    load: function() {
        throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.");
    },


    /**
     * Call a callback function for each entry at this folder level.
     * @param {Function} cb the callback function:
     * function (relativePath, file) {...}
     * It takes 2 arguments : the relative path and the file.
     */
    forEach: function(cb) {
        var filename, relativePath, file;
        for (filename in this.files) {
            if (!this.files.hasOwnProperty(filename)) {
                continue;
            }
            file = this.files[filename];
            relativePath = filename.slice(this.root.length, filename.length);
            if (relativePath && filename.slice(0, this.root.length) === this.root) { // the file is in the current root
                cb(relativePath, file); // TODO reverse the parameters ? need to be clean AND consistent with the filter search fn...
            }
        }
    },

    /**
     * Filter nested files/folders with the specified function.
     * @param {Function} search the predicate to use :
     * function (relativePath, file) {...}
     * It takes 2 arguments : the relative path and the file.
     * @return {Array} An array of matching elements.
     */
    filter: function(search) {
        var result = [];
        this.forEach(function (relativePath, entry) {
            if (search(relativePath, entry)) { // the file matches the function
                result.push(entry);
            }

        });
        return result;
    },

    /**
     * Add a file to the zip file, or search a file.
     * @param   {string|RegExp} name The name of the file to add (if data is defined),
     * the name of the file to find (if no data) or a regex to match files.
     * @param   {String|ArrayBuffer|Uint8Array|Buffer} data  The file data, either raw or base64 encoded
     * @param   {Object} o     File options
     * @return  {JSZip|Object|Array} this JSZip object (when adding a file),
     * a file (when searching by string) or an array of files (when searching by regex).
     */
    file: function(name, data, o) {
        if (arguments.length === 1) {
            if (isRegExp(name)) {
                var regexp = name;
                return this.filter(function(relativePath, file) {
                    return !file.dir && regexp.test(relativePath);
                });
            }
            else { // text
                var obj = this.files[this.root + name];
                if (obj && !obj.dir) {
                    return obj;
                } else {
                    return null;
                }
            }
        }
        else { // more than one argument : we have data !
            name = this.root + name;
            fileAdd.call(this, name, data, o);
        }
        return this;
    },

    /**
     * Add a directory to the zip file, or search.
     * @param   {String|RegExp} arg The name of the directory to add, or a regex to search folders.
     * @return  {JSZip} an object with the new directory as the root, or an array containing matching folders.
     */
    folder: function(arg) {
        if (!arg) {
            return this;
        }

        if (isRegExp(arg)) {
            return this.filter(function(relativePath, file) {
                return file.dir && arg.test(relativePath);
            });
        }

        // else, name is a new folder
        var name = this.root + arg;
        var newFolder = folderAdd.call(this, name);

        // Allow chaining by returning a new object with this folder as the root
        var ret = this.clone();
        ret.root = newFolder.name;
        return ret;
    },

    /**
     * Delete a file, or a directory and all sub-files, from the zip
     * @param {string} name the name of the file to delete
     * @return {JSZip} this JSZip object
     */
    remove: function(name) {
        name = this.root + name;
        var file = this.files[name];
        if (!file) {
            // Look for any folders
            if (name.slice(-1) !== "/") {
                name += "/";
            }
            file = this.files[name];
        }

        if (file && !file.dir) {
            // file
            delete this.files[name];
        } else {
            // maybe a folder, delete recursively
            var kids = this.filter(function(relativePath, file) {
                return file.name.slice(0, name.length) === name;
            });
            for (var i = 0; i < kids.length; i++) {
                delete this.files[kids[i].name];
            }
        }

        return this;
    },

    /**
     * Generate the complete zip file
     * @param {Object} options the options to generate the zip file :
     * - compression, "STORE" by default.
     * - type, "base64" by default. Values are : string, base64, uint8array, arraybuffer, blob.
     * @return {String|Uint8Array|ArrayBuffer|Buffer|Blob} the zip file
     */
    generate: function(options) {
        throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.");
    },

    /**
     * Generate the complete zip file as an internal stream.
     * @param {Object} options the options to generate the zip file :
     * - compression, "STORE" by default.
     * - type, "base64" by default. Values are : string, base64, uint8array, arraybuffer, blob.
     * @return {StreamHelper} the streamed zip file.
     */
    generateInternalStream: function(options) {
      var worker, opts = {};
      try {
          opts = utils.extend(options || {}, {
              streamFiles: false,
              compression: "STORE",
              compressionOptions : null,
              type: "",
              platform: "DOS",
              comment: null,
              mimeType: 'application/zip',
              encodeFileName: utf8.utf8encode
          });

          opts.type = opts.type.toLowerCase();
          opts.compression = opts.compression.toUpperCase();

          // "binarystring" is prefered but the internals use "string".
          if(opts.type === "binarystring") {
            opts.type = "string";
          }

          if (!opts.type) {
            throw new Error("No output type specified.");
          }

          utils.checkSupport(opts.type);

          // accept nodejs `process.platform`
          if(
              opts.platform === 'darwin' ||
              opts.platform === 'freebsd' ||
              opts.platform === 'linux' ||
              opts.platform === 'sunos'
          ) {
              opts.platform = "UNIX";
          }
          if (opts.platform === 'win32') {
              opts.platform = "DOS";
          }

          var comment = opts.comment || this.comment || "";
          worker = generate.generateWorker(this, opts, comment);
      } catch (e) {
        worker = new GenericWorker("error");
        worker.error(e);
      }
      return new StreamHelper(worker, opts.type || "string", opts.mimeType);
    },
    /**
     * Generate the complete zip file asynchronously.
     * @see generateInternalStream
     */
    generateAsync: function(options, onUpdate) {
        return this.generateInternalStream(options).accumulate(onUpdate);
    },
    /**
     * Generate the complete zip file asynchronously.
     * @see generateInternalStream
     */
    generateNodeStream: function(options, onUpdate) {
        options = options || {};
        if (!options.type) {
            options.type = "nodebuffer";
        }
        return this.generateInternalStream(options).toNodejsStream(onUpdate);
    }
};
module.exports = out;

},{"./compressedObject":249,"./defaults":252,"./generate":256,"./nodejs/NodejsStreamInputAdapter":259,"./nodejsUtils":261,"./stream/GenericWorker":275,"./stream/StreamHelper":276,"./utf8":278,"./utils":279,"./zipObject":282}],263:[function(require,module,exports){
/*
 * This file is used by module bundlers (browserify/webpack/etc) when
 * including a stream implementation. We use "readable-stream" to get a
 * consistent behavior between nodejs versions but bundlers often have a shim
 * for "stream". Using this shim greatly improve the compatibility and greatly
 * reduce the final size of the bundle (only one stream implementation, not
 * two).
 */
module.exports = require("stream");

},{"stream":337}],264:[function(require,module,exports){
'use strict';
var DataReader = require('./DataReader');
var utils = require('../utils');

function ArrayReader(data) {
    DataReader.call(this, data);
	for(var i = 0; i < this.data.length; i++) {
		data[i] = data[i] & 0xFF;
	}
}
utils.inherits(ArrayReader, DataReader);
/**
 * @see DataReader.byteAt
 */
ArrayReader.prototype.byteAt = function(i) {
    return this.data[this.zero + i];
};
/**
 * @see DataReader.lastIndexOfSignature
 */
ArrayReader.prototype.lastIndexOfSignature = function(sig) {
    var sig0 = sig.charCodeAt(0),
        sig1 = sig.charCodeAt(1),
        sig2 = sig.charCodeAt(2),
        sig3 = sig.charCodeAt(3);
    for (var i = this.length - 4; i >= 0; --i) {
        if (this.data[i] === sig0 && this.data[i + 1] === sig1 && this.data[i + 2] === sig2 && this.data[i + 3] === sig3) {
            return i - this.zero;
        }
    }

    return -1;
};
/**
 * @see DataReader.readAndCheckSignature
 */
ArrayReader.prototype.readAndCheckSignature = function (sig) {
    var sig0 = sig.charCodeAt(0),
        sig1 = sig.charCodeAt(1),
        sig2 = sig.charCodeAt(2),
        sig3 = sig.charCodeAt(3),
        data = this.readData(4);
    return sig0 === data[0] && sig1 === data[1] && sig2 === data[2] && sig3 === data[3];
};
/**
 * @see DataReader.readData
 */
ArrayReader.prototype.readData = function(size) {
    this.checkOffset(size);
    if(size === 0) {
        return [];
    }
    var result = this.data.slice(this.zero + this.index, this.zero + this.index + size);
    this.index += size;
    return result;
};
module.exports = ArrayReader;

},{"../utils":279,"./DataReader":265}],265:[function(require,module,exports){
'use strict';
var utils = require('../utils');

function DataReader(data) {
    this.data = data; // type : see implementation
    this.length = data.length;
    this.index = 0;
    this.zero = 0;
}
DataReader.prototype = {
    /**
     * Check that the offset will not go too far.
     * @param {string} offset the additional offset to check.
     * @throws {Error} an Error if the offset is out of bounds.
     */
    checkOffset: function(offset) {
        this.checkIndex(this.index + offset);
    },
    /**
     * Check that the specified index will not be too far.
     * @param {string} newIndex the index to check.
     * @throws {Error} an Error if the index is out of bounds.
     */
    checkIndex: function(newIndex) {
        if (this.length < this.zero + newIndex || newIndex < 0) {
            throw new Error("End of data reached (data length = " + this.length + ", asked index = " + (newIndex) + "). Corrupted zip ?");
        }
    },
    /**
     * Change the index.
     * @param {number} newIndex The new index.
     * @throws {Error} if the new index is out of the data.
     */
    setIndex: function(newIndex) {
        this.checkIndex(newIndex);
        this.index = newIndex;
    },
    /**
     * Skip the next n bytes.
     * @param {number} n the number of bytes to skip.
     * @throws {Error} if the new index is out of the data.
     */
    skip: function(n) {
        this.setIndex(this.index + n);
    },
    /**
     * Get the byte at the specified index.
     * @param {number} i the index to use.
     * @return {number} a byte.
     */
    byteAt: function(i) {
        // see implementations
    },
    /**
     * Get the next number with a given byte size.
     * @param {number} size the number of bytes to read.
     * @return {number} the corresponding number.
     */
    readInt: function(size) {
        var result = 0,
            i;
        this.checkOffset(size);
        for (i = this.index + size - 1; i >= this.index; i--) {
            result = (result << 8) + this.byteAt(i);
        }
        this.index += size;
        return result;
    },
    /**
     * Get the next string with a given byte size.
     * @param {number} size the number of bytes to read.
     * @return {string} the corresponding string.
     */
    readString: function(size) {
        return utils.transformTo("string", this.readData(size));
    },
    /**
     * Get raw data without conversion, <size> bytes.
     * @param {number} size the number of bytes to read.
     * @return {Object} the raw data, implementation specific.
     */
    readData: function(size) {
        // see implementations
    },
    /**
     * Find the last occurence of a zip signature (4 bytes).
     * @param {string} sig the signature to find.
     * @return {number} the index of the last occurence, -1 if not found.
     */
    lastIndexOfSignature: function(sig) {
        // see implementations
    },
    /**
     * Read the signature (4 bytes) at the current position and compare it with sig.
     * @param {string} sig the expected signature
     * @return {boolean} true if the signature matches, false otherwise.
     */
    readAndCheckSignature: function(sig) {
        // see implementations
    },
    /**
     * Get the next date.
     * @return {Date} the date.
     */
    readDate: function() {
        var dostime = this.readInt(4);
        return new Date(Date.UTC(
        ((dostime >> 25) & 0x7f) + 1980, // year
        ((dostime >> 21) & 0x0f) - 1, // month
        (dostime >> 16) & 0x1f, // day
        (dostime >> 11) & 0x1f, // hour
        (dostime >> 5) & 0x3f, // minute
        (dostime & 0x1f) << 1)); // second
    }
};
module.exports = DataReader;

},{"../utils":279}],266:[function(require,module,exports){
'use strict';
var Uint8ArrayReader = require('./Uint8ArrayReader');
var utils = require('../utils');

function NodeBufferReader(data) {
    Uint8ArrayReader.call(this, data);
}
utils.inherits(NodeBufferReader, Uint8ArrayReader);

/**
 * @see DataReader.readData
 */
NodeBufferReader.prototype.readData = function(size) {
    this.checkOffset(size);
    var result = this.data.slice(this.zero + this.index, this.zero + this.index + size);
    this.index += size;
    return result;
};
module.exports = NodeBufferReader;

},{"../utils":279,"./Uint8ArrayReader":268}],267:[function(require,module,exports){
'use strict';
var DataReader = require('./DataReader');
var utils = require('../utils');

function StringReader(data) {
    DataReader.call(this, data);
}
utils.inherits(StringReader, DataReader);
/**
 * @see DataReader.byteAt
 */
StringReader.prototype.byteAt = function(i) {
    return this.data.charCodeAt(this.zero + i);
};
/**
 * @see DataReader.lastIndexOfSignature
 */
StringReader.prototype.lastIndexOfSignature = function(sig) {
    return this.data.lastIndexOf(sig) - this.zero;
};
/**
 * @see DataReader.readAndCheckSignature
 */
StringReader.prototype.readAndCheckSignature = function (sig) {
    var data = this.readData(4);
    return sig === data;
};
/**
 * @see DataReader.readData
 */
StringReader.prototype.readData = function(size) {
    this.checkOffset(size);
    // this will work because the constructor applied the "& 0xff" mask.
    var result = this.data.slice(this.zero + this.index, this.zero + this.index + size);
    this.index += size;
    return result;
};
module.exports = StringReader;

},{"../utils":279,"./DataReader":265}],268:[function(require,module,exports){
'use strict';
var ArrayReader = require('./ArrayReader');
var utils = require('../utils');

function Uint8ArrayReader(data) {
    ArrayReader.call(this, data);
}
utils.inherits(Uint8ArrayReader, ArrayReader);
/**
 * @see DataReader.readData
 */
Uint8ArrayReader.prototype.readData = function(size) {
    this.checkOffset(size);
    if(size === 0) {
        // in IE10, when using subarray(idx, idx), we get the array [0x00] instead of [].
        return new Uint8Array(0);
    }
    var result = this.data.subarray(this.zero + this.index, this.zero + this.index + size);
    this.index += size;
    return result;
};
module.exports = Uint8ArrayReader;

},{"../utils":279,"./ArrayReader":264}],269:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var support = require('../support');
var ArrayReader = require('./ArrayReader');
var StringReader = require('./StringReader');
var NodeBufferReader = require('./NodeBufferReader');
var Uint8ArrayReader = require('./Uint8ArrayReader');

/**
 * Create a reader adapted to the data.
 * @param {String|ArrayBuffer|Uint8Array|Buffer} data the data to read.
 * @return {DataReader} the data reader.
 */
module.exports = function (data) {
    var type = utils.getTypeOf(data);
    utils.checkSupport(type);
    if (type === "string" && !support.uint8array) {
        return new StringReader(data);
    }
    if (type === "nodebuffer") {
        return new NodeBufferReader(data);
    }
    if (support.uint8array) {
        return new Uint8ArrayReader(utils.transformTo("uint8array", data));
    }
    return new ArrayReader(utils.transformTo("array", data));
};

},{"../support":277,"../utils":279,"./ArrayReader":264,"./NodeBufferReader":266,"./StringReader":267,"./Uint8ArrayReader":268}],270:[function(require,module,exports){
'use strict';
exports.LOCAL_FILE_HEADER = "PK\x03\x04";
exports.CENTRAL_FILE_HEADER = "PK\x01\x02";
exports.CENTRAL_DIRECTORY_END = "PK\x05\x06";
exports.ZIP64_CENTRAL_DIRECTORY_LOCATOR = "PK\x06\x07";
exports.ZIP64_CENTRAL_DIRECTORY_END = "PK\x06\x06";
exports.DATA_DESCRIPTOR = "PK\x07\x08";

},{}],271:[function(require,module,exports){
'use strict';

var GenericWorker = require('./GenericWorker');
var utils = require('../utils');

/**
 * A worker which convert chunks to a specified type.
 * @constructor
 * @param {String} destType the destination type.
 */
function ConvertWorker(destType) {
    GenericWorker.call(this, "ConvertWorker to " + destType);
    this.destType = destType;
}
utils.inherits(ConvertWorker, GenericWorker);

/**
 * @see GenericWorker.processChunk
 */
ConvertWorker.prototype.processChunk = function (chunk) {
    this.push({
        data : utils.transformTo(this.destType, chunk.data),
        meta : chunk.meta
    });
};
module.exports = ConvertWorker;

},{"../utils":279,"./GenericWorker":275}],272:[function(require,module,exports){
'use strict';

var GenericWorker = require('./GenericWorker');
var crc32 = require('../crc32');
var utils = require('../utils');

/**
 * A worker which calculate the crc32 of the data flowing through.
 * @constructor
 */
function Crc32Probe() {
    GenericWorker.call(this, "Crc32Probe");
    this.withStreamInfo("crc32", 0);
}
utils.inherits(Crc32Probe, GenericWorker);

/**
 * @see GenericWorker.processChunk
 */
Crc32Probe.prototype.processChunk = function (chunk) {
    this.streamInfo.crc32 = crc32(chunk.data, this.streamInfo.crc32 || 0);
    this.push(chunk);
};
module.exports = Crc32Probe;

},{"../crc32":251,"../utils":279,"./GenericWorker":275}],273:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var GenericWorker = require('./GenericWorker');

/**
 * A worker which calculate the total length of the data flowing through.
 * @constructor
 * @param {String} propName the name used to expose the length
 */
function DataLengthProbe(propName) {
    GenericWorker.call(this, "DataLengthProbe for " + propName);
    this.propName = propName;
    this.withStreamInfo(propName, 0);
}
utils.inherits(DataLengthProbe, GenericWorker);

/**
 * @see GenericWorker.processChunk
 */
DataLengthProbe.prototype.processChunk = function (chunk) {
    if(chunk) {
        var length = this.streamInfo[this.propName] || 0;
        this.streamInfo[this.propName] = length + chunk.data.length;
    }
    GenericWorker.prototype.processChunk.call(this, chunk);
};
module.exports = DataLengthProbe;


},{"../utils":279,"./GenericWorker":275}],274:[function(require,module,exports){
'use strict';

var utils = require('../utils');
var GenericWorker = require('./GenericWorker');

// the size of the generated chunks
// TODO expose this as a public variable
var DEFAULT_BLOCK_SIZE = 16 * 1024;

/**
 * A worker that reads a content and emits chunks.
 * @constructor
 * @param {Promise} dataP the promise of the data to split
 */
function DataWorker(dataP) {
    GenericWorker.call(this, "DataWorker");
    var self = this;
    this.dataIsReady = false;
    this.index = 0;
    this.max = 0;
    this.data = null;
    this.type = "";

    this._tickScheduled = false;

    dataP.then(function (data) {
        self.dataIsReady = true;
        self.data = data;
        self.max = data && data.length || 0;
        self.type = utils.getTypeOf(data);
        if(!self.isPaused) {
            self._tickAndRepeat();
        }
    }, function (e) {
        self.error(e);
    });
}

utils.inherits(DataWorker, GenericWorker);

/**
 * @see GenericWorker.cleanUp
 */
DataWorker.prototype.cleanUp = function () {
    GenericWorker.prototype.cleanUp.call(this);
    this.data = null;
};

/**
 * @see GenericWorker.resume
 */
DataWorker.prototype.resume = function () {
    if(!GenericWorker.prototype.resume.call(this)) {
        return false;
    }

    if (!this._tickScheduled && this.dataIsReady) {
        this._tickScheduled = true;
        utils.delay(this._tickAndRepeat, [], this);
    }
    return true;
};

/**
 * Trigger a tick a schedule an other call to this function.
 */
DataWorker.prototype._tickAndRepeat = function() {
    this._tickScheduled = false;
    if(this.isPaused || this.isFinished) {
        return;
    }
    this._tick();
    if(!this.isFinished) {
        utils.delay(this._tickAndRepeat, [], this);
        this._tickScheduled = true;
    }
};

/**
 * Read and push a chunk.
 */
DataWorker.prototype._tick = function() {

    if(this.isPaused || this.isFinished) {
        return false;
    }

    var size = DEFAULT_BLOCK_SIZE;
    var data = null, nextIndex = Math.min(this.max, this.index + size);
    if (this.index >= this.max) {
        // EOF
        return this.end();
    } else {
        switch(this.type) {
            case "string":
                data = this.data.substring(this.index, nextIndex);
            break;
            case "uint8array":
                data = this.data.subarray(this.index, nextIndex);
            break;
            case "array":
            case "nodebuffer":
                data = this.data.slice(this.index, nextIndex);
            break;
        }
        this.index = nextIndex;
        return this.push({
            data : data,
            meta : {
                percent : this.max ? this.index / this.max * 100 : 0
            }
        });
    }
};

module.exports = DataWorker;

},{"../utils":279,"./GenericWorker":275}],275:[function(require,module,exports){
'use strict';

/**
 * A worker that does nothing but passing chunks to the next one. This is like
 * a nodejs stream but with some differences. On the good side :
 * - it works on IE 6-9 without any issue / polyfill
 * - it weights less than the full dependencies bundled with browserify
 * - it forwards errors (no need to declare an error handler EVERYWHERE)
 *
 * A chunk is an object with 2 attributes : `meta` and `data`. The former is an
 * object containing anything (`percent` for example), see each worker for more
 * details. The latter is the real data (String, Uint8Array, etc).
 *
 * @constructor
 * @param {String} name the name of the stream (mainly used for debugging purposes)
 */
function GenericWorker(name) {
    // the name of the worker
    this.name = name || "default";
    // an object containing metadata about the workers chain
    this.streamInfo = {};
    // an error which happened when the worker was paused
    this.generatedError = null;
    // an object containing metadata to be merged by this worker into the general metadata
    this.extraStreamInfo = {};
    // true if the stream is paused (and should not do anything), false otherwise
    this.isPaused = true;
    // true if the stream is finished (and should not do anything), false otherwise
    this.isFinished = false;
    // true if the stream is locked to prevent further structure updates (pipe), false otherwise
    this.isLocked = false;
    // the event listeners
    this._listeners = {
        'data':[],
        'end':[],
        'error':[]
    };
    // the previous worker, if any
    this.previous = null;
}

GenericWorker.prototype = {
    /**
     * Push a chunk to the next workers.
     * @param {Object} chunk the chunk to push
     */
    push : function (chunk) {
        this.emit("data", chunk);
    },
    /**
     * End the stream.
     * @return {Boolean} true if this call ended the worker, false otherwise.
     */
    end : function () {
        if (this.isFinished) {
            return false;
        }

        this.flush();
        try {
            this.emit("end");
            this.cleanUp();
            this.isFinished = true;
        } catch (e) {
            this.emit("error", e);
        }
        return true;
    },
    /**
     * End the stream with an error.
     * @param {Error} e the error which caused the premature end.
     * @return {Boolean} true if this call ended the worker with an error, false otherwise.
     */
    error : function (e) {
        if (this.isFinished) {
            return false;
        }

        if(this.isPaused) {
            this.generatedError = e;
        } else {
            this.isFinished = true;

            this.emit("error", e);

            // in the workers chain exploded in the middle of the chain,
            // the error event will go downward but we also need to notify
            // workers upward that there has been an error.
            if(this.previous) {
                this.previous.error(e);
            }

            this.cleanUp();
        }
        return true;
    },
    /**
     * Add a callback on an event.
     * @param {String} name the name of the event (data, end, error)
     * @param {Function} listener the function to call when the event is triggered
     * @return {GenericWorker} the current object for chainability
     */
    on : function (name, listener) {
        this._listeners[name].push(listener);
        return this;
    },
    /**
     * Clean any references when a worker is ending.
     */
    cleanUp : function () {
        this.streamInfo = this.generatedError = this.extraStreamInfo = null;
        this._listeners = [];
    },
    /**
     * Trigger an event. This will call registered callback with the provided arg.
     * @param {String} name the name of the event (data, end, error)
     * @param {Object} arg the argument to call the callback with.
     */
    emit : function (name, arg) {
        if (this._listeners[name]) {
            for(var i = 0; i < this._listeners[name].length; i++) {
                this._listeners[name][i].call(this, arg);
            }
        }
    },
    /**
     * Chain a worker with an other.
     * @param {Worker} next the worker receiving events from the current one.
     * @return {worker} the next worker for chainability
     */
    pipe : function (next) {
        return next.registerPrevious(this);
    },
    /**
     * Same as `pipe` in the other direction.
     * Using an API with `pipe(next)` is very easy.
     * Implementing the API with the point of view of the next one registering
     * a source is easier, see the ZipFileWorker.
     * @param {Worker} previous the previous worker, sending events to this one
     * @return {Worker} the current worker for chainability
     */
    registerPrevious : function (previous) {
        if (this.isLocked) {
            throw new Error("The stream '" + this + "' has already been used.");
        }

        // sharing the streamInfo...
        this.streamInfo = previous.streamInfo;
        // ... and adding our own bits
        this.mergeStreamInfo();
        this.previous =  previous;
        var self = this;
        previous.on('data', function (chunk) {
            self.processChunk(chunk);
        });
        previous.on('end', function () {
            self.end();
        });
        previous.on('error', function (e) {
            self.error(e);
        });
        return this;
    },
    /**
     * Pause the stream so it doesn't send events anymore.
     * @return {Boolean} true if this call paused the worker, false otherwise.
     */
    pause : function () {
        if(this.isPaused || this.isFinished) {
            return false;
        }
        this.isPaused = true;

        if(this.previous) {
            this.previous.pause();
        }
        return true;
    },
    /**
     * Resume a paused stream.
     * @return {Boolean} true if this call resumed the worker, false otherwise.
     */
    resume : function () {
        if(!this.isPaused || this.isFinished) {
            return false;
        }
        this.isPaused = false;

        // if true, the worker tried to resume but failed
        var withError = false;
        if(this.generatedError) {
            this.error(this.generatedError);
            withError = true;
        }
        if(this.previous) {
            this.previous.resume();
        }

        return !withError;
    },
    /**
     * Flush any remaining bytes as the stream is ending.
     */
    flush : function () {},
    /**
     * Process a chunk. This is usually the method overridden.
     * @param {Object} chunk the chunk to process.
     */
    processChunk : function(chunk) {
        this.push(chunk);
    },
    /**
     * Add a key/value to be added in the workers chain streamInfo once activated.
     * @param {String} key the key to use
     * @param {Object} value the associated value
     * @return {Worker} the current worker for chainability
     */
    withStreamInfo : function (key, value) {
        this.extraStreamInfo[key] = value;
        this.mergeStreamInfo();
        return this;
    },
    /**
     * Merge this worker's streamInfo into the chain's streamInfo.
     */
    mergeStreamInfo : function () {
        for(var key in this.extraStreamInfo) {
            if (!this.extraStreamInfo.hasOwnProperty(key)) {
                continue;
            }
            this.streamInfo[key] = this.extraStreamInfo[key];
        }
    },

    /**
     * Lock the stream to prevent further updates on the workers chain.
     * After calling this method, all calls to pipe will fail.
     */
    lock: function () {
        if (this.isLocked) {
            throw new Error("The stream '" + this + "' has already been used.");
        }
        this.isLocked = true;
        if (this.previous) {
            this.previous.lock();
        }
    },

    /**
     *
     * Pretty print the workers chain.
     */
    toString : function () {
        var me = "Worker " + this.name;
        if (this.previous) {
            return this.previous + " -> " + me;
        } else {
            return me;
        }
    }
};

module.exports = GenericWorker;

},{}],276:[function(require,module,exports){
(function (Buffer){
'use strict';

var utils = require('../utils');
var ConvertWorker = require('./ConvertWorker');
var GenericWorker = require('./GenericWorker');
var base64 = require('../base64');
var support = require("../support");
var external = require("../external");

var NodejsStreamOutputAdapter = null;
if (support.nodestream) {
    try {
        NodejsStreamOutputAdapter = require('../nodejs/NodejsStreamOutputAdapter');
    } catch(e) {}
}

/**
 * Apply the final transformation of the data. If the user wants a Blob for
 * example, it's easier to work with an U8intArray and finally do the
 * ArrayBuffer/Blob conversion.
 * @param {String} type the name of the final type
 * @param {String|Uint8Array|Buffer} content the content to transform
 * @param {String} mimeType the mime type of the content, if applicable.
 * @return {String|Uint8Array|ArrayBuffer|Buffer|Blob} the content in the right format.
 */
function transformZipOutput(type, content, mimeType) {
    switch(type) {
        case "blob" :
            return utils.newBlob(utils.transformTo("arraybuffer", content), mimeType);
        case "base64" :
            return base64.encode(content);
        default :
            return utils.transformTo(type, content);
    }
}

/**
 * Concatenate an array of data of the given type.
 * @param {String} type the type of the data in the given array.
 * @param {Array} dataArray the array containing the data chunks to concatenate
 * @return {String|Uint8Array|Buffer} the concatenated data
 * @throws Error if the asked type is unsupported
 */
function concat (type, dataArray) {
    var i, index = 0, res = null, totalLength = 0;
    for(i = 0; i < dataArray.length; i++) {
        totalLength += dataArray[i].length;
    }
    switch(type) {
        case "string":
            return dataArray.join("");
          case "array":
            return Array.prototype.concat.apply([], dataArray);
        case "uint8array":
            res = new Uint8Array(totalLength);
            for(i = 0; i < dataArray.length; i++) {
                res.set(dataArray[i], index);
                index += dataArray[i].length;
            }
            return res;
        case "nodebuffer":
            return Buffer.concat(dataArray);
        default:
            throw new Error("concat : unsupported type '"  + type + "'");
    }
}

/**
 * Listen a StreamHelper, accumulate its content and concatenate it into a
 * complete block.
 * @param {StreamHelper} helper the helper to use.
 * @param {Function} updateCallback a callback called on each update. Called
 * with one arg :
 * - the metadata linked to the update received.
 * @return Promise the promise for the accumulation.
 */
function accumulate(helper, updateCallback) {
    return new external.Promise(function (resolve, reject){
        var dataArray = [];
        var chunkType = helper._internalType,
            resultType = helper._outputType,
            mimeType = helper._mimeType;
        helper
        .on('data', function (data, meta) {
            dataArray.push(data);
            if(updateCallback) {
                updateCallback(meta);
            }
        })
        .on('error', function(err) {
            dataArray = [];
            reject(err);
        })
        .on('end', function (){
            try {
                var result = transformZipOutput(resultType, concat(chunkType, dataArray), mimeType);
                resolve(result);
            } catch (e) {
                reject(e);
            }
            dataArray = [];
        })
        .resume();
    });
}

/**
 * An helper to easily use workers outside of JSZip.
 * @constructor
 * @param {Worker} worker the worker to wrap
 * @param {String} outputType the type of data expected by the use
 * @param {String} mimeType the mime type of the content, if applicable.
 */
function StreamHelper(worker, outputType, mimeType) {
    var internalType = outputType;
    switch(outputType) {
        case "blob":
        case "arraybuffer":
            internalType = "uint8array";
        break;
        case "base64":
            internalType = "string";
        break;
    }

    try {
        // the type used internally
        this._internalType = internalType;
        // the type used to output results
        this._outputType = outputType;
        // the mime type
        this._mimeType = mimeType;
        utils.checkSupport(internalType);
        this._worker = worker.pipe(new ConvertWorker(internalType));
        // the last workers can be rewired without issues but we need to
        // prevent any updates on previous workers.
        worker.lock();
    } catch(e) {
        this._worker = new GenericWorker("error");
        this._worker.error(e);
    }
}

StreamHelper.prototype = {
    /**
     * Listen a StreamHelper, accumulate its content and concatenate it into a
     * complete block.
     * @param {Function} updateCb the update callback.
     * @return Promise the promise for the accumulation.
     */
    accumulate : function (updateCb) {
        return accumulate(this, updateCb);
    },
    /**
     * Add a listener on an event triggered on a stream.
     * @param {String} evt the name of the event
     * @param {Function} fn the listener
     * @return {StreamHelper} the current helper.
     */
    on : function (evt, fn) {
        var self = this;

        if(evt === "data") {
            this._worker.on(evt, function (chunk) {
                fn.call(self, chunk.data, chunk.meta);
            });
        } else {
            this._worker.on(evt, function () {
                utils.delay(fn, arguments, self);
            });
        }
        return this;
    },
    /**
     * Resume the flow of chunks.
     * @return {StreamHelper} the current helper.
     */
    resume : function () {
        utils.delay(this._worker.resume, [], this._worker);
        return this;
    },
    /**
     * Pause the flow of chunks.
     * @return {StreamHelper} the current helper.
     */
    pause : function () {
        this._worker.pause();
        return this;
    },
    /**
     * Return a nodejs stream for this helper.
     * @param {Function} updateCb the update callback.
     * @return {NodejsStreamOutputAdapter} the nodejs stream.
     */
    toNodejsStream : function (updateCb) {
        utils.checkSupport("nodestream");
        if (this._outputType !== "nodebuffer") {
            // an object stream containing blob/arraybuffer/uint8array/string
            // is strange and I don't know if it would be useful.
            // I you find this comment and have a good usecase, please open a
            // bug report !
            throw new Error(this._outputType + " is not supported by this method");
        }

        return new NodejsStreamOutputAdapter(this, {
            objectMode : this._outputType !== "nodebuffer"
        }, updateCb);
    }
};


module.exports = StreamHelper;

}).call(this,require("buffer").Buffer)
},{"../base64":248,"../external":253,"../nodejs/NodejsStreamOutputAdapter":260,"../support":277,"../utils":279,"./ConvertWorker":271,"./GenericWorker":275,"buffer":168}],277:[function(require,module,exports){
(function (Buffer){
'use strict';

exports.base64 = true;
exports.array = true;
exports.string = true;
exports.arraybuffer = typeof ArrayBuffer !== "undefined" && typeof Uint8Array !== "undefined";
exports.nodebuffer = typeof Buffer !== "undefined";
// contains true if JSZip can read/generate Uint8Array, false otherwise.
exports.uint8array = typeof Uint8Array !== "undefined";

if (typeof ArrayBuffer === "undefined") {
    exports.blob = false;
}
else {
    var buffer = new ArrayBuffer(0);
    try {
        exports.blob = new Blob([buffer], {
            type: "application/zip"
        }).size === 0;
    }
    catch (e) {
        try {
            var Builder = self.BlobBuilder || self.WebKitBlobBuilder || self.MozBlobBuilder || self.MSBlobBuilder;
            var builder = new Builder();
            builder.append(buffer);
            exports.blob = builder.getBlob('application/zip').size === 0;
        }
        catch (e) {
            exports.blob = false;
        }
    }
}

try {
    exports.nodestream = !!require('readable-stream').Readable;
} catch(e) {
    exports.nodestream = false;
}

}).call(this,require("buffer").Buffer)
},{"buffer":168,"readable-stream":263}],278:[function(require,module,exports){
'use strict';

var utils = require('./utils');
var support = require('./support');
var nodejsUtils = require('./nodejsUtils');
var GenericWorker = require('./stream/GenericWorker');

/**
 * The following functions come from pako, from pako/lib/utils/strings
 * released under the MIT license, see pako https://github.com/nodeca/pako/
 */

// Table with utf8 lengths (calculated by first byte of sequence)
// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS,
// because max possible codepoint is 0x10ffff
var _utf8len = new Array(256);
for (var i=0; i<256; i++) {
  _utf8len[i] = (i >= 252 ? 6 : i >= 248 ? 5 : i >= 240 ? 4 : i >= 224 ? 3 : i >= 192 ? 2 : 1);
}
_utf8len[254]=_utf8len[254]=1; // Invalid sequence start

// convert string to array (typed, when possible)
var string2buf = function (str) {
    var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;

    // count binary size
    for (m_pos = 0; m_pos < str_len; m_pos++) {
        c = str.charCodeAt(m_pos);
        if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) {
            c2 = str.charCodeAt(m_pos+1);
            if ((c2 & 0xfc00) === 0xdc00) {
                c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
                m_pos++;
            }
        }
        buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4;
    }

    // allocate buffer
    if (support.uint8array) {
        buf = new Uint8Array(buf_len);
    } else {
        buf = new Array(buf_len);
    }

    // convert
    for (i=0, m_pos = 0; i < buf_len; m_pos++) {
        c = str.charCodeAt(m_pos);
        if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) {
            c2 = str.charCodeAt(m_pos+1);
            if ((c2 & 0xfc00) === 0xdc00) {
                c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
                m_pos++;
            }
        }
        if (c < 0x80) {
            /* one byte */
            buf[i++] = c;
        } else if (c < 0x800) {
            /* two bytes */
            buf[i++] = 0xC0 | (c >>> 6);
            buf[i++] = 0x80 | (c & 0x3f);
        } else if (c < 0x10000) {
            /* three bytes */
            buf[i++] = 0xE0 | (c >>> 12);
            buf[i++] = 0x80 | (c >>> 6 & 0x3f);
            buf[i++] = 0x80 | (c & 0x3f);
        } else {
            /* four bytes */
            buf[i++] = 0xf0 | (c >>> 18);
            buf[i++] = 0x80 | (c >>> 12 & 0x3f);
            buf[i++] = 0x80 | (c >>> 6 & 0x3f);
            buf[i++] = 0x80 | (c & 0x3f);
        }
    }

    return buf;
};

// Calculate max possible position in utf8 buffer,
// that will not break sequence. If that's not possible
// - (very small limits) return max size as is.
//
// buf[] - utf8 bytes array
// max   - length limit (mandatory);
var utf8border = function(buf, max) {
    var pos;

    max = max || buf.length;
    if (max > buf.length) { max = buf.length; }

    // go back from last position, until start of sequence found
    pos = max-1;
    while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; }

    // Fuckup - very small and broken sequence,
    // return max, because we should return something anyway.
    if (pos < 0) { return max; }

    // If we came to start of buffer - that means vuffer is too small,
    // return max too.
    if (pos === 0) { return max; }

    return (pos + _utf8len[buf[pos]] > max) ? pos : max;
};

// convert array to string
var buf2string = function (buf) {
    var str, i, out, c, c_len;
    var len = buf.length;

    // Reserve max possible length (2 words per char)
    // NB: by unknown reasons, Array is significantly faster for
    //     String.fromCharCode.apply than Uint16Array.
    var utf16buf = new Array(len*2);

    for (out=0, i=0; i<len;) {
        c = buf[i++];
        // quick process ascii
        if (c < 0x80) { utf16buf[out++] = c; continue; }

        c_len = _utf8len[c];
        // skip 5 & 6 byte codes
        if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len-1; continue; }

        // apply mask on first byte
        c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07;
        // join the rest
        while (c_len > 1 && i < len) {
            c = (c << 6) | (buf[i++] & 0x3f);
            c_len--;
        }

        // terminated by end of string?
        if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; }

        if (c < 0x10000) {
            utf16buf[out++] = c;
        } else {
            c -= 0x10000;
            utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff);
            utf16buf[out++] = 0xdc00 | (c & 0x3ff);
        }
    }

    // shrinkBuf(utf16buf, out)
    if (utf16buf.length !== out) {
        if(utf16buf.subarray) {
            utf16buf = utf16buf.subarray(0, out);
        } else {
            utf16buf.length = out;
        }
    }

    // return String.fromCharCode.apply(null, utf16buf);
    return utils.applyFromCharCode(utf16buf);
};


// That's all for the pako functions.


/**
 * Transform a javascript string into an array (typed if possible) of bytes,
 * UTF-8 encoded.
 * @param {String} str the string to encode
 * @return {Array|Uint8Array|Buffer} the UTF-8 encoded string.
 */
exports.utf8encode = function utf8encode(str) {
    if (support.nodebuffer) {
        return nodejsUtils.newBufferFrom(str, "utf-8");
    }

    return string2buf(str);
};


/**
 * Transform a bytes array (or a representation) representing an UTF-8 encoded
 * string into a javascript string.
 * @param {Array|Uint8Array|Buffer} buf the data de decode
 * @return {String} the decoded string.
 */
exports.utf8decode = function utf8decode(buf) {
    if (support.nodebuffer) {
        return utils.transformTo("nodebuffer", buf).toString("utf-8");
    }

    buf = utils.transformTo(support.uint8array ? "uint8array" : "array", buf);

    return buf2string(buf);
};

/**
 * A worker to decode utf8 encoded binary chunks into string chunks.
 * @constructor
 */
function Utf8DecodeWorker() {
    GenericWorker.call(this, "utf-8 decode");
    // the last bytes if a chunk didn't end with a complete codepoint.
    this.leftOver = null;
}
utils.inherits(Utf8DecodeWorker, GenericWorker);

/**
 * @see GenericWorker.processChunk
 */
Utf8DecodeWorker.prototype.processChunk = function (chunk) {

    var data = utils.transformTo(support.uint8array ? "uint8array" : "array", chunk.data);

    // 1st step, re-use what's left of the previous chunk
    if (this.leftOver && this.leftOver.length) {
        if(support.uint8array) {
            var previousData = data;
            data = new Uint8Array(previousData.length + this.leftOver.length);
            data.set(this.leftOver, 0);
            data.set(previousData, this.leftOver.length);
        } else {
            data = this.leftOver.concat(data);
        }
        this.leftOver = null;
    }

    var nextBoundary = utf8border(data);
    var usableData = data;
    if (nextBoundary !== data.length) {
        if (support.uint8array) {
            usableData = data.subarray(0, nextBoundary);
            this.leftOver = data.subarray(nextBoundary, data.length);
        } else {
            usableData = data.slice(0, nextBoundary);
            this.leftOver = data.slice(nextBoundary, data.length);
        }
    }

    this.push({
        data : exports.utf8decode(usableData),
        meta : chunk.meta
    });
};

/**
 * @see GenericWorker.flush
 */
Utf8DecodeWorker.prototype.flush = function () {
    if(this.leftOver && this.leftOver.length) {
        this.push({
            data : exports.utf8decode(this.leftOver),
            meta : {}
        });
        this.leftOver = null;
    }
};
exports.Utf8DecodeWorker = Utf8DecodeWorker;

/**
 * A worker to endcode string chunks into utf8 encoded binary chunks.
 * @constructor
 */
function Utf8EncodeWorker() {
    GenericWorker.call(this, "utf-8 encode");
}
utils.inherits(Utf8EncodeWorker, GenericWorker);

/**
 * @see GenericWorker.processChunk
 */
Utf8EncodeWorker.prototype.processChunk = function (chunk) {
    this.push({
        data : exports.utf8encode(chunk.data),
        meta : chunk.meta
    });
};
exports.Utf8EncodeWorker = Utf8EncodeWorker;

},{"./nodejsUtils":261,"./stream/GenericWorker":275,"./support":277,"./utils":279}],279:[function(require,module,exports){
'use strict';

var support = require('./support');
var base64 = require('./base64');
var nodejsUtils = require('./nodejsUtils');
var setImmediate = require('set-immediate-shim');
var external = require("./external");


/**
 * Convert a string that pass as a "binary string": it should represent a byte
 * array but may have > 255 char codes. Be sure to take only the first byte
 * and returns the byte array.
 * @param {String} str the string to transform.
 * @return {Array|Uint8Array} the string in a binary format.
 */
function string2binary(str) {
    var result = null;
    if (support.uint8array) {
      result = new Uint8Array(str.length);
    } else {
      result = new Array(str.length);
    }
    return stringToArrayLike(str, result);
}

/**
 * Create a new blob with the given content and the given type.
 * @param {String|ArrayBuffer} part the content to put in the blob. DO NOT use
 * an Uint8Array because the stock browser of android 4 won't accept it (it
 * will be silently converted to a string, "[object Uint8Array]").
 *
 * Use only ONE part to build the blob to avoid a memory leak in IE11 / Edge:
 * when a large amount of Array is used to create the Blob, the amount of
 * memory consumed is nearly 100 times the original data amount.
 *
 * @param {String} type the mime type of the blob.
 * @return {Blob} the created blob.
 */
exports.newBlob = function(part, type) {
    exports.checkSupport("blob");

    try {
        // Blob constructor
        return new Blob([part], {
            type: type
        });
    }
    catch (e) {

        try {
            // deprecated, browser only, old way
            var Builder = self.BlobBuilder || self.WebKitBlobBuilder || self.MozBlobBuilder || self.MSBlobBuilder;
            var builder = new Builder();
            builder.append(part);
            return builder.getBlob(type);
        }
        catch (e) {

            // well, fuck ?!
            throw new Error("Bug : can't construct the Blob.");
        }
    }


};
/**
 * The identity function.
 * @param {Object} input the input.
 * @return {Object} the same input.
 */
function identity(input) {
    return input;
}

/**
 * Fill in an array with a string.
 * @param {String} str the string to use.
 * @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to fill in (will be mutated).
 * @return {Array|ArrayBuffer|Uint8Array|Buffer} the updated array.
 */
function stringToArrayLike(str, array) {
    for (var i = 0; i < str.length; ++i) {
        array[i] = str.charCodeAt(i) & 0xFF;
    }
    return array;
}

/**
 * An helper for the function arrayLikeToString.
 * This contains static informations and functions that
 * can be optimized by the browser JIT compiler.
 */
var arrayToStringHelper = {
    /**
     * Transform an array of int into a string, chunk by chunk.
     * See the performances notes on arrayLikeToString.
     * @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to transform.
     * @param {String} type the type of the array.
     * @param {Integer} chunk the chunk size.
     * @return {String} the resulting string.
     * @throws Error if the chunk is too big for the stack.
     */
    stringifyByChunk: function(array, type, chunk) {
        var result = [], k = 0, len = array.length;
        // shortcut
        if (len <= chunk) {
            return String.fromCharCode.apply(null, array);
        }
        while (k < len) {
            if (type === "array" || type === "nodebuffer") {
                result.push(String.fromCharCode.apply(null, array.slice(k, Math.min(k + chunk, len))));
            }
            else {
                result.push(String.fromCharCode.apply(null, array.subarray(k, Math.min(k + chunk, len))));
            }
            k += chunk;
        }
        return result.join("");
    },
    /**
     * Call String.fromCharCode on every item in the array.
     * This is the naive implementation, which generate A LOT of intermediate string.
     * This should be used when everything else fail.
     * @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to transform.
     * @return {String} the result.
     */
    stringifyByChar: function(array){
        var resultStr = "";
        for(var i = 0; i < array.length; i++) {
            resultStr += String.fromCharCode(array[i]);
        }
        return resultStr;
    },
    applyCanBeUsed : {
        /**
         * true if the browser accepts to use String.fromCharCode on Uint8Array
         */
        uint8array : (function () {
            try {
                return support.uint8array && String.fromCharCode.apply(null, new Uint8Array(1)).length === 1;
            } catch (e) {
                return false;
            }
        })(),
        /**
         * true if the browser accepts to use String.fromCharCode on nodejs Buffer.
         */
        nodebuffer : (function () {
            try {
                return support.nodebuffer && String.fromCharCode.apply(null, nodejsUtils.allocBuffer(1)).length === 1;
            } catch (e) {
                return false;
            }
        })()
    }
};

/**
 * Transform an array-like object to a string.
 * @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to transform.
 * @return {String} the result.
 */
function arrayLikeToString(array) {
    // Performances notes :
    // --------------------
    // String.fromCharCode.apply(null, array) is the fastest, see
    // see http://jsperf.com/converting-a-uint8array-to-a-string/2
    // but the stack is limited (and we can get huge arrays !).
    //
    // result += String.fromCharCode(array[i]); generate too many strings !
    //
    // This code is inspired by http://jsperf.com/arraybuffer-to-string-apply-performance/2
    // TODO : we now have workers that split the work. Do we still need that ?
    var chunk = 65536,
        type = exports.getTypeOf(array),
        canUseApply = true;
    if (type === "uint8array") {
        canUseApply = arrayToStringHelper.applyCanBeUsed.uint8array;
    } else if (type === "nodebuffer") {
        canUseApply = arrayToStringHelper.applyCanBeUsed.nodebuffer;
    }

    if (canUseApply) {
        while (chunk > 1) {
            try {
                return arrayToStringHelper.stringifyByChunk(array, type, chunk);
            } catch (e) {
                chunk = Math.floor(chunk / 2);
            }
        }
    }

    // no apply or chunk error : slow and painful algorithm
    // default browser on android 4.*
    return arrayToStringHelper.stringifyByChar(array);
}

exports.applyFromCharCode = arrayLikeToString;


/**
 * Copy the data from an array-like to an other array-like.
 * @param {Array|ArrayBuffer|Uint8Array|Buffer} arrayFrom the origin array.
 * @param {Array|ArrayBuffer|Uint8Array|Buffer} arrayTo the destination array which will be mutated.
 * @return {Array|ArrayBuffer|Uint8Array|Buffer} the updated destination array.
 */
function arrayLikeToArrayLike(arrayFrom, arrayTo) {
    for (var i = 0; i < arrayFrom.length; i++) {
        arrayTo[i] = arrayFrom[i];
    }
    return arrayTo;
}

// a matrix containing functions to transform everything into everything.
var transform = {};

// string to ?
transform["string"] = {
    "string": identity,
    "array": function(input) {
        return stringToArrayLike(input, new Array(input.length));
    },
    "arraybuffer": function(input) {
        return transform["string"]["uint8array"](input).buffer;
    },
    "uint8array": function(input) {
        return stringToArrayLike(input, new Uint8Array(input.length));
    },
    "nodebuffer": function(input) {
        return stringToArrayLike(input, nodejsUtils.allocBuffer(input.length));
    }
};

// array to ?
transform["array"] = {
    "string": arrayLikeToString,
    "array": identity,
    "arraybuffer": function(input) {
        return (new Uint8Array(input)).buffer;
    },
    "uint8array": function(input) {
        return new Uint8Array(input);
    },
    "nodebuffer": function(input) {
        return nodejsUtils.newBufferFrom(input);
    }
};

// arraybuffer to ?
transform["arraybuffer"] = {
    "string": function(input) {
        return arrayLikeToString(new Uint8Array(input));
    },
    "array": function(input) {
        return arrayLikeToArrayLike(new Uint8Array(input), new Array(input.byteLength));
    },
    "arraybuffer": identity,
    "uint8array": function(input) {
        return new Uint8Array(input);
    },
    "nodebuffer": function(input) {
        return nodejsUtils.newBufferFrom(new Uint8Array(input));
    }
};

// uint8array to ?
transform["uint8array"] = {
    "string": arrayLikeToString,
    "array": function(input) {
        return arrayLikeToArrayLike(input, new Array(input.length));
    },
    "arraybuffer": function(input) {
        return input.buffer;
    },
    "uint8array": identity,
    "nodebuffer": function(input) {
        return nodejsUtils.newBufferFrom(input);
    }
};

// nodebuffer to ?
transform["nodebuffer"] = {
    "string": arrayLikeToString,
    "array": function(input) {
        return arrayLikeToArrayLike(input, new Array(input.length));
    },
    "arraybuffer": function(input) {
        return transform["nodebuffer"]["uint8array"](input).buffer;
    },
    "uint8array": function(input) {
        return arrayLikeToArrayLike(input, new Uint8Array(input.length));
    },
    "nodebuffer": identity
};

/**
 * Transform an input into any type.
 * The supported output type are : string, array, uint8array, arraybuffer, nodebuffer.
 * If no output type is specified, the unmodified input will be returned.
 * @param {String} outputType the output type.
 * @param {String|Array|ArrayBuffer|Uint8Array|Buffer} input the input to convert.
 * @throws {Error} an Error if the browser doesn't support the requested output type.
 */
exports.transformTo = function(outputType, input) {
    if (!input) {
        // undefined, null, etc
        // an empty string won't harm.
        input = "";
    }
    if (!outputType) {
        return input;
    }
    exports.checkSupport(outputType);
    var inputType = exports.getTypeOf(input);
    var result = transform[inputType][outputType](input);
    return result;
};

/**
 * Return the type of the input.
 * The type will be in a format valid for JSZip.utils.transformTo : string, array, uint8array, arraybuffer.
 * @param {Object} input the input to identify.
 * @return {String} the (lowercase) type of the input.
 */
exports.getTypeOf = function(input) {
    if (typeof input === "string") {
        return "string";
    }
    if (Object.prototype.toString.call(input) === "[object Array]") {
        return "array";
    }
    if (support.nodebuffer && nodejsUtils.isBuffer(input)) {
        return "nodebuffer";
    }
    if (support.uint8array && input instanceof Uint8Array) {
        return "uint8array";
    }
    if (support.arraybuffer && input instanceof ArrayBuffer) {
        return "arraybuffer";
    }
};

/**
 * Throw an exception if the type is not supported.
 * @param {String} type the type to check.
 * @throws {Error} an Error if the browser doesn't support the requested type.
 */
exports.checkSupport = function(type) {
    var supported = support[type.toLowerCase()];
    if (!supported) {
        throw new Error(type + " is not supported by this platform");
    }
};

exports.MAX_VALUE_16BITS = 65535;
exports.MAX_VALUE_32BITS = -1; // well, "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF" is parsed as -1

/**
 * Prettify a string read as binary.
 * @param {string} str the string to prettify.
 * @return {string} a pretty string.
 */
exports.pretty = function(str) {
    var res = '',
        code, i;
    for (i = 0; i < (str || "").length; i++) {
        code = str.charCodeAt(i);
        res += '\\x' + (code < 16 ? "0" : "") + code.toString(16).toUpperCase();
    }
    return res;
};

/**
 * Defer the call of a function.
 * @param {Function} callback the function to call asynchronously.
 * @param {Array} args the arguments to give to the callback.
 */
exports.delay = function(callback, args, self) {
    setImmediate(function () {
        callback.apply(self || null, args || []);
    });
};

/**
 * Extends a prototype with an other, without calling a constructor with
 * side effects. Inspired by nodejs' `utils.inherits`
 * @param {Function} ctor the constructor to augment
 * @param {Function} superCtor the parent constructor to use
 */
exports.inherits = function (ctor, superCtor) {
    var Obj = function() {};
    Obj.prototype = superCtor.prototype;
    ctor.prototype = new Obj();
};

/**
 * Merge the objects passed as parameters into a new one.
 * @private
 * @param {...Object} var_args All objects to merge.
 * @return {Object} a new object with the data of the others.
 */
exports.extend = function() {
    var result = {}, i, attr;
    for (i = 0; i < arguments.length; i++) { // arguments is not enumerable in some browsers
        for (attr in arguments[i]) {
            if (arguments[i].hasOwnProperty(attr) && typeof result[attr] === "undefined") {
                result[attr] = arguments[i][attr];
            }
        }
    }
    return result;
};

/**
 * Transform arbitrary content into a Promise.
 * @param {String} name a name for the content being processed.
 * @param {Object} inputData the content to process.
 * @param {Boolean} isBinary true if the content is not an unicode string
 * @param {Boolean} isOptimizedBinaryString true if the string content only has one byte per character.
 * @param {Boolean} isBase64 true if the string content is encoded with base64.
 * @return {Promise} a promise in a format usable by JSZip.
 */
exports.prepareContent = function(name, inputData, isBinary, isOptimizedBinaryString, isBase64) {

    // if inputData is already a promise, this flatten it.
    var promise = external.Promise.resolve(inputData).then(function(data) {
        
        
        var isBlob = support.blob && (data instanceof Blob || ['[object File]', '[object Blob]'].indexOf(Object.prototype.toString.call(data)) !== -1);

        if (isBlob && typeof FileReader !== "undefined") {
            return new external.Promise(function (resolve, reject) {
                var reader = new FileReader();

                reader.onload = function(e) {
                    resolve(e.target.result);
                };
                reader.onerror = function(e) {
                    reject(e.target.error);
                };
                reader.readAsArrayBuffer(data);
            });
        } else {
            return data;
        }
    });

    return promise.then(function(data) {
        var dataType = exports.getTypeOf(data);

        if (!dataType) {
            return external.Promise.reject(
                new Error("Can't read the data of '" + name + "'. Is it " +
                          "in a supported JavaScript type (String, Blob, ArrayBuffer, etc) ?")
            );
        }
        // special case : it's way easier to work with Uint8Array than with ArrayBuffer
        if (dataType === "arraybuffer") {
            data = exports.transformTo("uint8array", data);
        } else if (dataType === "string") {
            if (isBase64) {
                data = base64.decode(data);
            }
            else if (isBinary) {
                // optimizedBinaryString === true means that the file has already been filtered with a 0xFF mask
                if (isOptimizedBinaryString !== true) {
                    // this is a string, not in a base64 format.
                    // Be sure that this is a correct "binary string"
                    data = string2binary(data);
                }
            }
        }
        return data;
    });
};

},{"./base64":248,"./external":253,"./nodejsUtils":261,"./support":277,"set-immediate-shim":328}],280:[function(require,module,exports){
'use strict';
var readerFor = require('./reader/readerFor');
var utils = require('./utils');
var sig = require('./signature');
var ZipEntry = require('./zipEntry');
var utf8 = require('./utf8');
var support = require('./support');
//  class ZipEntries {{{
/**
 * All the entries in the zip file.
 * @constructor
 * @param {Object} loadOptions Options for loading the stream.
 */
function ZipEntries(loadOptions) {
    this.files = [];
    this.loadOptions = loadOptions;
}
ZipEntries.prototype = {
    /**
     * Check that the reader is on the specified signature.
     * @param {string} expectedSignature the expected signature.
     * @throws {Error} if it is an other signature.
     */
    checkSignature: function(expectedSignature) {
        if (!this.reader.readAndCheckSignature(expectedSignature)) {
            this.reader.index -= 4;
            var signature = this.reader.readString(4);
            throw new Error("Corrupted zip or bug: unexpected signature " + "(" + utils.pretty(signature) + ", expected " + utils.pretty(expectedSignature) + ")");
        }
    },
    /**
     * Check if the given signature is at the given index.
     * @param {number} askedIndex the index to check.
     * @param {string} expectedSignature the signature to expect.
     * @return {boolean} true if the signature is here, false otherwise.
     */
    isSignature: function(askedIndex, expectedSignature) {
        var currentIndex = this.reader.index;
        this.reader.setIndex(askedIndex);
        var signature = this.reader.readString(4);
        var result = signature === expectedSignature;
        this.reader.setIndex(currentIndex);
        return result;
    },
    /**
     * Read the end of the central directory.
     */
    readBlockEndOfCentral: function() {
        this.diskNumber = this.reader.readInt(2);
        this.diskWithCentralDirStart = this.reader.readInt(2);
        this.centralDirRecordsOnThisDisk = this.reader.readInt(2);
        this.centralDirRecords = this.reader.readInt(2);
        this.centralDirSize = this.reader.readInt(4);
        this.centralDirOffset = this.reader.readInt(4);

        this.zipCommentLength = this.reader.readInt(2);
        // warning : the encoding depends of the system locale
        // On a linux machine with LANG=en_US.utf8, this field is utf8 encoded.
        // On a windows machine, this field is encoded with the localized windows code page.
        var zipComment = this.reader.readData(this.zipCommentLength);
        var decodeParamType = support.uint8array ? "uint8array" : "array";
        // To get consistent behavior with the generation part, we will assume that
        // this is utf8 encoded unless specified otherwise.
        var decodeContent = utils.transformTo(decodeParamType, zipComment);
        this.zipComment = this.loadOptions.decodeFileName(decodeContent);
    },
    /**
     * Read the end of the Zip 64 central directory.
     * Not merged with the method readEndOfCentral :
     * The end of central can coexist with its Zip64 brother,
     * I don't want to read the wrong number of bytes !
     */
    readBlockZip64EndOfCentral: function() {
        this.zip64EndOfCentralSize = this.reader.readInt(8);
        this.reader.skip(4);
        // this.versionMadeBy = this.reader.readString(2);
        // this.versionNeeded = this.reader.readInt(2);
        this.diskNumber = this.reader.readInt(4);
        this.diskWithCentralDirStart = this.reader.readInt(4);
        this.centralDirRecordsOnThisDisk = this.reader.readInt(8);
        this.centralDirRecords = this.reader.readInt(8);
        this.centralDirSize = this.reader.readInt(8);
        this.centralDirOffset = this.reader.readInt(8);

        this.zip64ExtensibleData = {};
        var extraDataSize = this.zip64EndOfCentralSize - 44,
            index = 0,
            extraFieldId,
            extraFieldLength,
            extraFieldValue;
        while (index < extraDataSize) {
            extraFieldId = this.reader.readInt(2);
            extraFieldLength = this.reader.readInt(4);
            extraFieldValue = this.reader.readData(extraFieldLength);
            this.zip64ExtensibleData[extraFieldId] = {
                id: extraFieldId,
                length: extraFieldLength,
                value: extraFieldValue
            };
        }
    },
    /**
     * Read the end of the Zip 64 central directory locator.
     */
    readBlockZip64EndOfCentralLocator: function() {
        this.diskWithZip64CentralDirStart = this.reader.readInt(4);
        this.relativeOffsetEndOfZip64CentralDir = this.reader.readInt(8);
        this.disksCount = this.reader.readInt(4);
        if (this.disksCount > 1) {
            throw new Error("Multi-volumes zip are not supported");
        }
    },
    /**
     * Read the local files, based on the offset read in the central part.
     */
    readLocalFiles: function() {
        var i, file;
        for (i = 0; i < this.files.length; i++) {
            file = this.files[i];
            this.reader.setIndex(file.localHeaderOffset);
            this.checkSignature(sig.LOCAL_FILE_HEADER);
            file.readLocalPart(this.reader);
            file.handleUTF8();
            file.processAttributes();
        }
    },
    /**
     * Read the central directory.
     */
    readCentralDir: function() {
        var file;

        this.reader.setIndex(this.centralDirOffset);
        while (this.reader.readAndCheckSignature(sig.CENTRAL_FILE_HEADER)) {
            file = new ZipEntry({
                zip64: this.zip64
            }, this.loadOptions);
            file.readCentralPart(this.reader);
            this.files.push(file);
        }

        if (this.centralDirRecords !== this.files.length) {
            if (this.centralDirRecords !== 0 && this.files.length === 0) {
                // We expected some records but couldn't find ANY.
                // This is really suspicious, as if something went wrong.
                throw new Error("Corrupted zip or bug: expected " + this.centralDirRecords + " records in central dir, got " + this.files.length);
            } else {
                // We found some records but not all.
                // Something is wrong but we got something for the user: no error here.
                // console.warn("expected", this.centralDirRecords, "records in central dir, got", this.files.length);
            }
        }
    },
    /**
     * Read the end of central directory.
     */
    readEndOfCentral: function() {
        var offset = this.reader.lastIndexOfSignature(sig.CENTRAL_DIRECTORY_END);
        if (offset < 0) {
            // Check if the content is a truncated zip or complete garbage.
            // A "LOCAL_FILE_HEADER" is not required at the beginning (auto
            // extractible zip for example) but it can give a good hint.
            // If an ajax request was used without responseType, we will also
            // get unreadable data.
            var isGarbage = !this.isSignature(0, sig.LOCAL_FILE_HEADER);

            if (isGarbage) {
                throw new Error("Can't find end of central directory : is this a zip file ? " +
                                "If it is, see https://stuk.github.io/jszip/documentation/howto/read_zip.html");
            } else {
                throw new Error("Corrupted zip: can't find end of central directory");
            }

        }
        this.reader.setIndex(offset);
        var endOfCentralDirOffset = offset;
        this.checkSignature(sig.CENTRAL_DIRECTORY_END);
        this.readBlockEndOfCentral();


        /* extract from the zip spec :
            4)  If one of the fields in the end of central directory
                record is too small to hold required data, the field
                should be set to -1 (0xFFFF or 0xFFFFFFFF) and the
                ZIP64 format record should be created.
            5)  The end of central directory record and the
                Zip64 end of central directory locator record must
                reside on the same disk when splitting or spanning
                an archive.
         */
        if (this.diskNumber === utils.MAX_VALUE_16BITS || this.diskWithCentralDirStart === utils.MAX_VALUE_16BITS || this.centralDirRecordsOnThisDisk === utils.MAX_VALUE_16BITS || this.centralDirRecords === utils.MAX_VALUE_16BITS || this.centralDirSize === utils.MAX_VALUE_32BITS || this.centralDirOffset === utils.MAX_VALUE_32BITS) {
            this.zip64 = true;

            /*
            Warning : the zip64 extension is supported, but ONLY if the 64bits integer read from
            the zip file can fit into a 32bits integer. This cannot be solved : JavaScript represents
            all numbers as 64-bit double precision IEEE 754 floating point numbers.
            So, we have 53bits for integers and bitwise operations treat everything as 32bits.
            see https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Operators/Bitwise_Operators
            and http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-262.pdf section 8.5
            */

            // should look for a zip64 EOCD locator
            offset = this.reader.lastIndexOfSignature(sig.ZIP64_CENTRAL_DIRECTORY_LOCATOR);
            if (offset < 0) {
                throw new Error("Corrupted zip: can't find the ZIP64 end of central directory locator");
            }
            this.reader.setIndex(offset);
            this.checkSignature(sig.ZIP64_CENTRAL_DIRECTORY_LOCATOR);
            this.readBlockZip64EndOfCentralLocator();

            // now the zip64 EOCD record
            if (!this.isSignature(this.relativeOffsetEndOfZip64CentralDir, sig.ZIP64_CENTRAL_DIRECTORY_END)) {
                // console.warn("ZIP64 end of central directory not where expected.");
                this.relativeOffsetEndOfZip64CentralDir = this.reader.lastIndexOfSignature(sig.ZIP64_CENTRAL_DIRECTORY_END);
                if (this.relativeOffsetEndOfZip64CentralDir < 0) {
                    throw new Error("Corrupted zip: can't find the ZIP64 end of central directory");
                }
            }
            this.reader.setIndex(this.relativeOffsetEndOfZip64CentralDir);
            this.checkSignature(sig.ZIP64_CENTRAL_DIRECTORY_END);
            this.readBlockZip64EndOfCentral();
        }

        var expectedEndOfCentralDirOffset = this.centralDirOffset + this.centralDirSize;
        if (this.zip64) {
            expectedEndOfCentralDirOffset += 20; // end of central dir 64 locator
            expectedEndOfCentralDirOffset += 12 /* should not include the leading 12 bytes */ + this.zip64EndOfCentralSize;
        }

        var extraBytes = endOfCentralDirOffset - expectedEndOfCentralDirOffset;

        if (extraBytes > 0) {
            // console.warn(extraBytes, "extra bytes at beginning or within zipfile");
            if (this.isSignature(endOfCentralDirOffset, sig.CENTRAL_FILE_HEADER)) {
                // The offsets seem wrong, but we have something at the specified offset.
                // So… we keep it.
            } else {
                // the offset is wrong, update the "zero" of the reader
                // this happens if data has been prepended (crx files for example)
                this.reader.zero = extraBytes;
            }
        } else if (extraBytes < 0) {
            throw new Error("Corrupted zip: missing " + Math.abs(extraBytes) + " bytes.");
        }
    },
    prepareReader: function(data) {
        this.reader = readerFor(data);
    },
    /**
     * Read a zip file and create ZipEntries.
     * @param {String|ArrayBuffer|Uint8Array|Buffer} data the binary string representing a zip file.
     */
    load: function(data) {
        this.prepareReader(data);
        this.readEndOfCentral();
        this.readCentralDir();
        this.readLocalFiles();
    }
};
// }}} end of ZipEntries
module.exports = ZipEntries;

},{"./reader/readerFor":269,"./signature":270,"./support":277,"./utf8":278,"./utils":279,"./zipEntry":281}],281:[function(require,module,exports){
'use strict';
var readerFor = require('./reader/readerFor');
var utils = require('./utils');
var CompressedObject = require('./compressedObject');
var crc32fn = require('./crc32');
var utf8 = require('./utf8');
var compressions = require('./compressions');
var support = require('./support');

var MADE_BY_DOS = 0x00;
var MADE_BY_UNIX = 0x03;

/**
 * Find a compression registered in JSZip.
 * @param {string} compressionMethod the method magic to find.
 * @return {Object|null} the JSZip compression object, null if none found.
 */
var findCompression = function(compressionMethod) {
    for (var method in compressions) {
        if (!compressions.hasOwnProperty(method)) {
            continue;
        }
        if (compressions[method].magic === compressionMethod) {
            return compressions[method];
        }
    }
    return null;
};

// class ZipEntry {{{
/**
 * An entry in the zip file.
 * @constructor
 * @param {Object} options Options of the current file.
 * @param {Object} loadOptions Options for loading the stream.
 */
function ZipEntry(options, loadOptions) {
    this.options = options;
    this.loadOptions = loadOptions;
}
ZipEntry.prototype = {
    /**
     * say if the file is encrypted.
     * @return {boolean} true if the file is encrypted, false otherwise.
     */
    isEncrypted: function() {
        // bit 1 is set
        return (this.bitFlag & 0x0001) === 0x0001;
    },
    /**
     * say if the file has utf-8 filename/comment.
     * @return {boolean} true if the filename/comment is in utf-8, false otherwise.
     */
    useUTF8: function() {
        // bit 11 is set
        return (this.bitFlag & 0x0800) === 0x0800;
    },
    /**
     * Read the local part of a zip file and add the info in this object.
     * @param {DataReader} reader the reader to use.
     */
    readLocalPart: function(reader) {
        var compression, localExtraFieldsLength;

        // we already know everything from the central dir !
        // If the central dir data are false, we are doomed.
        // On the bright side, the local part is scary  : zip64, data descriptors, both, etc.
        // The less data we get here, the more reliable this should be.
        // Let's skip the whole header and dash to the data !
        reader.skip(22);
        // in some zip created on windows, the filename stored in the central dir contains \ instead of /.
        // Strangely, the filename here is OK.
        // I would love to treat these zip files as corrupted (see http://www.info-zip.org/FAQ.html#backslashes
        // or APPNOTE#4.4.17.1, "All slashes MUST be forward slashes '/'") but there are a lot of bad zip generators...
        // Search "unzip mismatching "local" filename continuing with "central" filename version" on
        // the internet.
        //
        // I think I see the logic here : the central directory is used to display
        // content and the local directory is used to extract the files. Mixing / and \
        // may be used to display \ to windows users and use / when extracting the files.
        // Unfortunately, this lead also to some issues : http://seclists.org/fulldisclosure/2009/Sep/394
        this.fileNameLength = reader.readInt(2);
        localExtraFieldsLength = reader.readInt(2); // can't be sure this will be the same as the central dir
        // the fileName is stored as binary data, the handleUTF8 method will take care of the encoding.
        this.fileName = reader.readData(this.fileNameLength);
        reader.skip(localExtraFieldsLength);

        if (this.compressedSize === -1 || this.uncompressedSize === -1) {
            throw new Error("Bug or corrupted zip : didn't get enough informations from the central directory " + "(compressedSize === -1 || uncompressedSize === -1)");
        }

        compression = findCompression(this.compressionMethod);
        if (compression === null) { // no compression found
            throw new Error("Corrupted zip : compression " + utils.pretty(this.compressionMethod) + " unknown (inner file : " + utils.transformTo("string", this.fileName) + ")");
        }
        this.decompressed = new CompressedObject(this.compressedSize, this.uncompressedSize, this.crc32, compression, reader.readData(this.compressedSize));
    },

    /**
     * Read the central part of a zip file and add the info in this object.
     * @param {DataReader} reader the reader to use.
     */
    readCentralPart: function(reader) {
        this.versionMadeBy = reader.readInt(2);
        reader.skip(2);
        // this.versionNeeded = reader.readInt(2);
        this.bitFlag = reader.readInt(2);
        this.compressionMethod = reader.readString(2);
        this.date = reader.readDate();
        this.crc32 = reader.readInt(4);
        this.compressedSize = reader.readInt(4);
        this.uncompressedSize = reader.readInt(4);
        var fileNameLength = reader.readInt(2);
        this.extraFieldsLength = reader.readInt(2);
        this.fileCommentLength = reader.readInt(2);
        this.diskNumberStart = reader.readInt(2);
        this.internalFileAttributes = reader.readInt(2);
        this.externalFileAttributes = reader.readInt(4);
        this.localHeaderOffset = reader.readInt(4);

        if (this.isEncrypted()) {
            throw new Error("Encrypted zip are not supported");
        }

        // will be read in the local part, see the comments there
        reader.skip(fileNameLength);
        this.readExtraFields(reader);
        this.parseZIP64ExtraField(reader);
        this.fileComment = reader.readData(this.fileCommentLength);
    },

    /**
     * Parse the external file attributes and get the unix/dos permissions.
     */
    processAttributes: function () {
        this.unixPermissions = null;
        this.dosPermissions = null;
        var madeBy = this.versionMadeBy >> 8;

        // Check if we have the DOS directory flag set.
        // We look for it in the DOS and UNIX permissions
        // but some unknown platform could set it as a compatibility flag.
        this.dir = this.externalFileAttributes & 0x0010 ? true : false;

        if(madeBy === MADE_BY_DOS) {
            // first 6 bits (0 to 5)
            this.dosPermissions = this.externalFileAttributes & 0x3F;
        }

        if(madeBy === MADE_BY_UNIX) {
            this.unixPermissions = (this.externalFileAttributes >> 16) & 0xFFFF;
            // the octal permissions are in (this.unixPermissions & 0x01FF).toString(8);
        }

        // fail safe : if the name ends with a / it probably means a folder
        if (!this.dir && this.fileNameStr.slice(-1) === '/') {
            this.dir = true;
        }
    },

    /**
     * Parse the ZIP64 extra field and merge the info in the current ZipEntry.
     * @param {DataReader} reader the reader to use.
     */
    parseZIP64ExtraField: function(reader) {

        if (!this.extraFields[0x0001]) {
            return;
        }

        // should be something, preparing the extra reader
        var extraReader = readerFor(this.extraFields[0x0001].value);

        // I really hope that these 64bits integer can fit in 32 bits integer, because js
        // won't let us have more.
        if (this.uncompressedSize === utils.MAX_VALUE_32BITS) {
            this.uncompressedSize = extraReader.readInt(8);
        }
        if (this.compressedSize === utils.MAX_VALUE_32BITS) {
            this.compressedSize = extraReader.readInt(8);
        }
        if (this.localHeaderOffset === utils.MAX_VALUE_32BITS) {
            this.localHeaderOffset = extraReader.readInt(8);
        }
        if (this.diskNumberStart === utils.MAX_VALUE_32BITS) {
            this.diskNumberStart = extraReader.readInt(4);
        }
    },
    /**
     * Read the central part of a zip file and add the info in this object.
     * @param {DataReader} reader the reader to use.
     */
    readExtraFields: function(reader) {
        var end = reader.index + this.extraFieldsLength,
            extraFieldId,
            extraFieldLength,
            extraFieldValue;

        if (!this.extraFields) {
            this.extraFields = {};
        }

        while (reader.index < end) {
            extraFieldId = reader.readInt(2);
            extraFieldLength = reader.readInt(2);
            extraFieldValue = reader.readData(extraFieldLength);

            this.extraFields[extraFieldId] = {
                id: extraFieldId,
                length: extraFieldLength,
                value: extraFieldValue
            };
        }
    },
    /**
     * Apply an UTF8 transformation if needed.
     */
    handleUTF8: function() {
        var decodeParamType = support.uint8array ? "uint8array" : "array";
        if (this.useUTF8()) {
            this.fileNameStr = utf8.utf8decode(this.fileName);
            this.fileCommentStr = utf8.utf8decode(this.fileComment);
        } else {
            var upath = this.findExtraFieldUnicodePath();
            if (upath !== null) {
                this.fileNameStr = upath;
            } else {
                // ASCII text or unsupported code page
                var fileNameByteArray =  utils.transformTo(decodeParamType, this.fileName);
                this.fileNameStr = this.loadOptions.decodeFileName(fileNameByteArray);
            }

            var ucomment = this.findExtraFieldUnicodeComment();
            if (ucomment !== null) {
                this.fileCommentStr = ucomment;
            } else {
                // ASCII text or unsupported code page
                var commentByteArray =  utils.transformTo(decodeParamType, this.fileComment);
                this.fileCommentStr = this.loadOptions.decodeFileName(commentByteArray);
            }
        }
    },

    /**
     * Find the unicode path declared in the extra field, if any.
     * @return {String} the unicode path, null otherwise.
     */
    findExtraFieldUnicodePath: function() {
        var upathField = this.extraFields[0x7075];
        if (upathField) {
            var extraReader = readerFor(upathField.value);

            // wrong version
            if (extraReader.readInt(1) !== 1) {
                return null;
            }

            // the crc of the filename changed, this field is out of date.
            if (crc32fn(this.fileName) !== extraReader.readInt(4)) {
                return null;
            }

            return utf8.utf8decode(extraReader.readData(upathField.length - 5));
        }
        return null;
    },

    /**
     * Find the unicode comment declared in the extra field, if any.
     * @return {String} the unicode comment, null otherwise.
     */
    findExtraFieldUnicodeComment: function() {
        var ucommentField = this.extraFields[0x6375];
        if (ucommentField) {
            var extraReader = readerFor(ucommentField.value);

            // wrong version
            if (extraReader.readInt(1) !== 1) {
                return null;
            }

            // the crc of the comment changed, this field is out of date.
            if (crc32fn(this.fileComment) !== extraReader.readInt(4)) {
                return null;
            }

            return utf8.utf8decode(extraReader.readData(ucommentField.length - 5));
        }
        return null;
    }
};
module.exports = ZipEntry;

},{"./compressedObject":249,"./compressions":250,"./crc32":251,"./reader/readerFor":269,"./support":277,"./utf8":278,"./utils":279}],282:[function(require,module,exports){
'use strict';

var StreamHelper = require('./stream/StreamHelper');
var DataWorker = require('./stream/DataWorker');
var utf8 = require('./utf8');
var CompressedObject = require('./compressedObject');
var GenericWorker = require('./stream/GenericWorker');

/**
 * A simple object representing a file in the zip file.
 * @constructor
 * @param {string} name the name of the file
 * @param {String|ArrayBuffer|Uint8Array|Buffer} data the data
 * @param {Object} options the options of the file
 */
var ZipObject = function(name, data, options) {
    this.name = name;
    this.dir = options.dir;
    this.date = options.date;
    this.comment = options.comment;
    this.unixPermissions = options.unixPermissions;
    this.dosPermissions = options.dosPermissions;

    this._data = data;
    this._dataBinary = options.binary;
    // keep only the compression
    this.options = {
        compression : options.compression,
        compressionOptions : options.compressionOptions
    };
};

ZipObject.prototype = {
    /**
     * Create an internal stream for the content of this object.
     * @param {String} type the type of each chunk.
     * @return StreamHelper the stream.
     */
    internalStream: function (type) {
        var result = null, outputType = "string";
        try {
            if (!type) {
                throw new Error("No output type specified.");
            }
            outputType = type.toLowerCase();
            var askUnicodeString = outputType === "string" || outputType === "text";
            if (outputType === "binarystring" || outputType === "text") {
                outputType = "string";
            }
            result = this._decompressWorker();

            var isUnicodeString = !this._dataBinary;

            if (isUnicodeString && !askUnicodeString) {
                result = result.pipe(new utf8.Utf8EncodeWorker());
            }
            if (!isUnicodeString && askUnicodeString) {
                result = result.pipe(new utf8.Utf8DecodeWorker());
            }
        } catch (e) {
            result = new GenericWorker("error");
            result.error(e);
        }

        return new StreamHelper(result, outputType, "");
    },

    /**
     * Prepare the content in the asked type.
     * @param {String} type the type of the result.
     * @param {Function} onUpdate a function to call on each internal update.
     * @return Promise the promise of the result.
     */
    async: function (type, onUpdate) {
        return this.internalStream(type).accumulate(onUpdate);
    },

    /**
     * Prepare the content as a nodejs stream.
     * @param {String} type the type of each chunk.
     * @param {Function} onUpdate a function to call on each internal update.
     * @return Stream the stream.
     */
    nodeStream: function (type, onUpdate) {
        return this.internalStream(type || "nodebuffer").toNodejsStream(onUpdate);
    },

    /**
     * Return a worker for the compressed content.
     * @private
     * @param {Object} compression the compression object to use.
     * @param {Object} compressionOptions the options to use when compressing.
     * @return Worker the worker.
     */
    _compressWorker: function (compression, compressionOptions) {
        if (
            this._data instanceof CompressedObject &&
            this._data.compression.magic === compression.magic
        ) {
            return this._data.getCompressedWorker();
        } else {
            var result = this._decompressWorker();
            if(!this._dataBinary) {
                result = result.pipe(new utf8.Utf8EncodeWorker());
            }
            return CompressedObject.createWorkerFrom(result, compression, compressionOptions);
        }
    },
    /**
     * Return a worker for the decompressed content.
     * @private
     * @return Worker the worker.
     */
    _decompressWorker : function () {
        if (this._data instanceof CompressedObject) {
            return this._data.getContentWorker();
        } else if (this._data instanceof GenericWorker) {
            return this._data;
        } else {
            return new DataWorker(this._data);
        }
    }
};

var removedMethods = ["asText", "asBinary", "asNodeBuffer", "asUint8Array", "asArrayBuffer"];
var removedFn = function () {
    throw new Error("This method has been removed in JSZip 3.0, please check the upgrade guide.");
};

for(var i = 0; i < removedMethods.length; i++) {
    ZipObject.prototype[removedMethods[i]] = removedFn;
}
module.exports = ZipObject;

},{"./compressedObject":249,"./stream/DataWorker":274,"./stream/GenericWorker":275,"./stream/StreamHelper":276,"./utf8":278}],283:[function(require,module,exports){
'use strict';
var immediate = require('immediate');

/* istanbul ignore next */
function INTERNAL() {}

var handlers = {};

var REJECTED = ['REJECTED'];
var FULFILLED = ['FULFILLED'];
var PENDING = ['PENDING'];

module.exports = Promise;

function Promise(resolver) {
  if (typeof resolver !== 'function') {
    throw new TypeError('resolver must be a function');
  }
  this.state = PENDING;
  this.queue = [];
  this.outcome = void 0;
  if (resolver !== INTERNAL) {
    safelyResolveThenable(this, resolver);
  }
}

Promise.prototype["finally"] = function (callback) {
  if (typeof callback !== 'function') {
    return this;
  }
  var p = this.constructor;
  return this.then(resolve, reject);

  function resolve(value) {
    function yes () {
      return value;
    }
    return p.resolve(callback()).then(yes);
  }
  function reject(reason) {
    function no () {
      throw reason;
    }
    return p.resolve(callback()).then(no);
  }
};
Promise.prototype["catch"] = function (onRejected) {
  return this.then(null, onRejected);
};
Promise.prototype.then = function (onFulfilled, onRejected) {
  if (typeof onFulfilled !== 'function' && this.state === FULFILLED ||
    typeof onRejected !== 'function' && this.state === REJECTED) {
    return this;
  }
  var promise = new this.constructor(INTERNAL);
  if (this.state !== PENDING) {
    var resolver = this.state === FULFILLED ? onFulfilled : onRejected;
    unwrap(promise, resolver, this.outcome);
  } else {
    this.queue.push(new QueueItem(promise, onFulfilled, onRejected));
  }

  return promise;
};
function QueueItem(promise, onFulfilled, onRejected) {
  this.promise = promise;
  if (typeof onFulfilled === 'function') {
    this.onFulfilled = onFulfilled;
    this.callFulfilled = this.otherCallFulfilled;
  }
  if (typeof onRejected === 'function') {
    this.onRejected = onRejected;
    this.callRejected = this.otherCallRejected;
  }
}
QueueItem.prototype.callFulfilled = function (value) {
  handlers.resolve(this.promise, value);
};
QueueItem.prototype.otherCallFulfilled = function (value) {
  unwrap(this.promise, this.onFulfilled, value);
};
QueueItem.prototype.callRejected = function (value) {
  handlers.reject(this.promise, value);
};
QueueItem.prototype.otherCallRejected = function (value) {
  unwrap(this.promise, this.onRejected, value);
};

function unwrap(promise, func, value) {
  immediate(function () {
    var returnValue;
    try {
      returnValue = func(value);
    } catch (e) {
      return handlers.reject(promise, e);
    }
    if (returnValue === promise) {
      handlers.reject(promise, new TypeError('Cannot resolve promise with itself'));
    } else {
      handlers.resolve(promise, returnValue);
    }
  });
}

handlers.resolve = function (self, value) {
  var result = tryCatch(getThen, value);
  if (result.status === 'error') {
    return handlers.reject(self, result.value);
  }
  var thenable = result.value;

  if (thenable) {
    safelyResolveThenable(self, thenable);
  } else {
    self.state = FULFILLED;
    self.outcome = value;
    var i = -1;
    var len = self.queue.length;
    while (++i < len) {
      self.queue[i].callFulfilled(value);
    }
  }
  return self;
};
handlers.reject = function (self, error) {
  self.state = REJECTED;
  self.outcome = error;
  var i = -1;
  var len = self.queue.length;
  while (++i < len) {
    self.queue[i].callRejected(error);
  }
  return self;
};

function getThen(obj) {
  // Make sure we only access the accessor once as required by the spec
  var then = obj && obj.then;
  if (obj && (typeof obj === 'object' || typeof obj === 'function') && typeof then === 'function') {
    return function appyThen() {
      then.apply(obj, arguments);
    };
  }
}

function safelyResolveThenable(self, thenable) {
  // Either fulfill, reject or reject with error
  var called = false;
  function onError(value) {
    if (called) {
      return;
    }
    called = true;
    handlers.reject(self, value);
  }

  function onSuccess(value) {
    if (called) {
      return;
    }
    called = true;
    handlers.resolve(self, value);
  }

  function tryToUnwrap() {
    thenable(onSuccess, onError);
  }

  var result = tryCatch(tryToUnwrap);
  if (result.status === 'error') {
    onError(result.value);
  }
}

function tryCatch(func, value) {
  var out = {};
  try {
    out.value = func(value);
    out.status = 'success';
  } catch (e) {
    out.status = 'error';
    out.value = e;
  }
  return out;
}

Promise.resolve = resolve;
function resolve(value) {
  if (value instanceof this) {
    return value;
  }
  return handlers.resolve(new this(INTERNAL), value);
}

Promise.reject = reject;
function reject(reason) {
  var promise = new this(INTERNAL);
  return handlers.reject(promise, reason);
}

Promise.all = all;
function all(iterable) {
  var self = this;
  if (Object.prototype.toString.call(iterable) !== '[object Array]') {
    return this.reject(new TypeError('must be an array'));
  }

  var len = iterable.length;
  var called = false;
  if (!len) {
    return this.resolve([]);
  }

  var values = new Array(len);
  var resolved = 0;
  var i = -1;
  var promise = new this(INTERNAL);

  while (++i < len) {
    allResolver(iterable[i], i);
  }
  return promise;
  function allResolver(value, i) {
    self.resolve(value).then(resolveFromAll, function (error) {
      if (!called) {
        called = true;
        handlers.reject(promise, error);
      }
    });
    function resolveFromAll(outValue) {
      values[i] = outValue;
      if (++resolved === len && !called) {
        called = true;
        handlers.resolve(promise, values);
      }
    }
  }
}

Promise.race = race;
function race(iterable) {
  var self = this;
  if (Object.prototype.toString.call(iterable) !== '[object Array]') {
    return this.reject(new TypeError('must be an array'));
  }

  var len = iterable.length;
  var called = false;
  if (!len) {
    return this.resolve([]);
  }

  var i = -1;
  var promise = new this(INTERNAL);

  while (++i < len) {
    resolver(iterable[i]);
  }
  return promise;
  function resolver(value) {
    self.resolve(value).then(function (response) {
      if (!called) {
        called = true;
        handlers.resolve(promise, response);
      }
    }, function (error) {
      if (!called) {
        called = true;
        handlers.reject(promise, error);
      }
    });
  }
}

},{"immediate":244}],284:[function(require,module,exports){
(function (global){
/**
 * @license
 * Lodash <https://lodash.com/>
 * Copyright OpenJS Foundation and other contributors <https://openjsf.org/>
 * Released under MIT license <https://lodash.com/license>
 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
 * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 */
;(function() {

  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
  var undefined;

  /** Used as the semantic version number. */
  var VERSION = '4.17.15';

  /** Used as the size to enable large array optimizations. */
  var LARGE_ARRAY_SIZE = 200;

  /** Error message constants. */
  var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',
      FUNC_ERROR_TEXT = 'Expected a function';

  /** Used to stand-in for `undefined` hash values. */
  var HASH_UNDEFINED = '__lodash_hash_undefined__';

  /** Used as the maximum memoize cache size. */
  var MAX_MEMOIZE_SIZE = 500;

  /** Used as the internal argument placeholder. */
  var PLACEHOLDER = '__lodash_placeholder__';

  /** Used to compose bitmasks for cloning. */
  var CLONE_DEEP_FLAG = 1,
      CLONE_FLAT_FLAG = 2,
      CLONE_SYMBOLS_FLAG = 4;

  /** Used to compose bitmasks for value comparisons. */
  var COMPARE_PARTIAL_FLAG = 1,
      COMPARE_UNORDERED_FLAG = 2;

  /** Used to compose bitmasks for function metadata. */
  var WRAP_BIND_FLAG = 1,
      WRAP_BIND_KEY_FLAG = 2,
      WRAP_CURRY_BOUND_FLAG = 4,
      WRAP_CURRY_FLAG = 8,
      WRAP_CURRY_RIGHT_FLAG = 16,
      WRAP_PARTIAL_FLAG = 32,
      WRAP_PARTIAL_RIGHT_FLAG = 64,
      WRAP_ARY_FLAG = 128,
      WRAP_REARG_FLAG = 256,
      WRAP_FLIP_FLAG = 512;

  /** Used as default options for `_.truncate`. */
  var DEFAULT_TRUNC_LENGTH = 30,
      DEFAULT_TRUNC_OMISSION = '...';

  /** Used to detect hot functions by number of calls within a span of milliseconds. */
  var HOT_COUNT = 800,
      HOT_SPAN = 16;

  /** Used to indicate the type of lazy iteratees. */
  var LAZY_FILTER_FLAG = 1,
      LAZY_MAP_FLAG = 2,
      LAZY_WHILE_FLAG = 3;

  /** Used as references for various `Number` constants. */
  var INFINITY = 1 / 0,
      MAX_SAFE_INTEGER = 9007199254740991,
      MAX_INTEGER = 1.7976931348623157e+308,
      NAN = 0 / 0;

  /** Used as references for the maximum length and index of an array. */
  var MAX_ARRAY_LENGTH = 4294967295,
      MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,
      HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;

  /** Used to associate wrap methods with their bit flags. */
  var wrapFlags = [
    ['ary', WRAP_ARY_FLAG],
    ['bind', WRAP_BIND_FLAG],
    ['bindKey', WRAP_BIND_KEY_FLAG],
    ['curry', WRAP_CURRY_FLAG],
    ['curryRight', WRAP_CURRY_RIGHT_FLAG],
    ['flip', WRAP_FLIP_FLAG],
    ['partial', WRAP_PARTIAL_FLAG],
    ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],
    ['rearg', WRAP_REARG_FLAG]
  ];

  /** `Object#toString` result references. */
  var argsTag = '[object Arguments]',
      arrayTag = '[object Array]',
      asyncTag = '[object AsyncFunction]',
      boolTag = '[object Boolean]',
      dateTag = '[object Date]',
      domExcTag = '[object DOMException]',
      errorTag = '[object Error]',
      funcTag = '[object Function]',
      genTag = '[object GeneratorFunction]',
      mapTag = '[object Map]',
      numberTag = '[object Number]',
      nullTag = '[object Null]',
      objectTag = '[object Object]',
      promiseTag = '[object Promise]',
      proxyTag = '[object Proxy]',
      regexpTag = '[object RegExp]',
      setTag = '[object Set]',
      stringTag = '[object String]',
      symbolTag = '[object Symbol]',
      undefinedTag = '[object Undefined]',
      weakMapTag = '[object WeakMap]',
      weakSetTag = '[object WeakSet]';

  var arrayBufferTag = '[object ArrayBuffer]',
      dataViewTag = '[object DataView]',
      float32Tag = '[object Float32Array]',
      float64Tag = '[object Float64Array]',
      int8Tag = '[object Int8Array]',
      int16Tag = '[object Int16Array]',
      int32Tag = '[object Int32Array]',
      uint8Tag = '[object Uint8Array]',
      uint8ClampedTag = '[object Uint8ClampedArray]',
      uint16Tag = '[object Uint16Array]',
      uint32Tag = '[object Uint32Array]';

  /** Used to match empty string literals in compiled template source. */
  var reEmptyStringLeading = /\b__p \+= '';/g,
      reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
      reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;

  /** Used to match HTML entities and HTML characters. */
  var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,
      reUnescapedHtml = /[&<>"']/g,
      reHasEscapedHtml = RegExp(reEscapedHtml.source),
      reHasUnescapedHtml = RegExp(reUnescapedHtml.source);

  /** Used to match template delimiters. */
  var reEscape = /<%-([\s\S]+?)%>/g,
      reEvaluate = /<%([\s\S]+?)%>/g,
      reInterpolate = /<%=([\s\S]+?)%>/g;

  /** Used to match property names within property paths. */
  var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
      reIsPlainProp = /^\w*$/,
      rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;

  /**
   * Used to match `RegExp`
   * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
   */
  var reRegExpChar = /[\\^$.*+?()[\]{}|]/g,
      reHasRegExpChar = RegExp(reRegExpChar.source);

  /** Used to match leading and trailing whitespace. */
  var reTrim = /^\s+|\s+$/g,
      reTrimStart = /^\s+/,
      reTrimEnd = /\s+$/;

  /** Used to match wrap detail comments. */
  var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/,
      reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/,
      reSplitDetails = /,? & /;

  /** Used to match words composed of alphanumeric characters. */
  var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g;

  /** Used to match backslashes in property paths. */
  var reEscapeChar = /\\(\\)?/g;

  /**
   * Used to match
   * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).
   */
  var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;

  /** Used to match `RegExp` flags from their coerced string values. */
  var reFlags = /\w*$/;

  /** Used to detect bad signed hexadecimal string values. */
  var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;

  /** Used to detect binary string values. */
  var reIsBinary = /^0b[01]+$/i;

  /** Used to detect host constructors (Safari). */
  var reIsHostCtor = /^\[object .+?Constructor\]$/;

  /** Used to detect octal string values. */
  var reIsOctal = /^0o[0-7]+$/i;

  /** Used to detect unsigned integer values. */
  var reIsUint = /^(?:0|[1-9]\d*)$/;

  /** Used to match Latin Unicode letters (excluding mathematical operators). */
  var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;

  /** Used to ensure capturing order of template delimiters. */
  var reNoMatch = /($^)/;

  /** Used to match unescaped characters in compiled string literals. */
  var reUnescapedString = /['\n\r\u2028\u2029\\]/g;

  /** Used to compose unicode character classes. */
  var rsAstralRange = '\\ud800-\\udfff',
      rsComboMarksRange = '\\u0300-\\u036f',
      reComboHalfMarksRange = '\\ufe20-\\ufe2f',
      rsComboSymbolsRange = '\\u20d0-\\u20ff',
      rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
      rsDingbatRange = '\\u2700-\\u27bf',
      rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff',
      rsMathOpRange = '\\xac\\xb1\\xd7\\xf7',
      rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf',
      rsPunctuationRange = '\\u2000-\\u206f',
      rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000',
      rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde',
      rsVarRange = '\\ufe0e\\ufe0f',
      rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;

  /** Used to compose unicode capture groups. */
  var rsApos = "['\u2019]",
      rsAstral = '[' + rsAstralRange + ']',
      rsBreak = '[' + rsBreakRange + ']',
      rsCombo = '[' + rsComboRange + ']',
      rsDigits = '\\d+',
      rsDingbat = '[' + rsDingbatRange + ']',
      rsLower = '[' + rsLowerRange + ']',
      rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',
      rsFitz = '\\ud83c[\\udffb-\\udfff]',
      rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
      rsNonAstral = '[^' + rsAstralRange + ']',
      rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
      rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
      rsUpper = '[' + rsUpperRange + ']',
      rsZWJ = '\\u200d';

  /** Used to compose unicode regexes. */
  var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',
      rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',
      rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',
      rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',
      reOptMod = rsModifier + '?',
      rsOptVar = '[' + rsVarRange + ']?',
      rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
      rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])',
      rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])',
      rsSeq = rsOptVar + reOptMod + rsOptJoin,
      rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,
      rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';

  /** Used to match apostrophes. */
  var reApos = RegExp(rsApos, 'g');

  /**
   * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and
   * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).
   */
  var reComboMark = RegExp(rsCombo, 'g');

  /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
  var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');

  /** Used to match complex or compound words. */
  var reUnicodeWord = RegExp([
    rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',
    rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',
    rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,
    rsUpper + '+' + rsOptContrUpper,
    rsOrdUpper,
    rsOrdLower,
    rsDigits,
    rsEmoji
  ].join('|'), 'g');

  /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
  var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboRange + rsVarRange + ']');

  /** Used to detect strings that need a more robust regexp to match words. */
  var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;

  /** Used to assign default `context` object properties. */
  var contextProps = [
    'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',
    'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',
    'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',
    'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',
    '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'
  ];

  /** Used to make template sourceURLs easier to identify. */
  var templateCounter = -1;

  /** Used to identify `toStringTag` values of typed arrays. */
  var typedArrayTags = {};
  typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
  typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
  typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
  typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
  typedArrayTags[uint32Tag] = true;
  typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
  typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
  typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =
  typedArrayTags[errorTag] = typedArrayTags[funcTag] =
  typedArrayTags[mapTag] = typedArrayTags[numberTag] =
  typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
  typedArrayTags[setTag] = typedArrayTags[stringTag] =
  typedArrayTags[weakMapTag] = false;

  /** Used to identify `toStringTag` values supported by `_.clone`. */
  var cloneableTags = {};
  cloneableTags[argsTag] = cloneableTags[arrayTag] =
  cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =
  cloneableTags[boolTag] = cloneableTags[dateTag] =
  cloneableTags[float32Tag] = cloneableTags[float64Tag] =
  cloneableTags[int8Tag] = cloneableTags[int16Tag] =
  cloneableTags[int32Tag] = cloneableTags[mapTag] =
  cloneableTags[numberTag] = cloneableTags[objectTag] =
  cloneableTags[regexpTag] = cloneableTags[setTag] =
  cloneableTags[stringTag] = cloneableTags[symbolTag] =
  cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =
  cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;
  cloneableTags[errorTag] = cloneableTags[funcTag] =
  cloneableTags[weakMapTag] = false;

  /** Used to map Latin Unicode letters to basic Latin letters. */
  var deburredLetters = {
    // Latin-1 Supplement block.
    '\xc0': 'A',  '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A',
    '\xe0': 'a',  '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a',
    '\xc7': 'C',  '\xe7': 'c',
    '\xd0': 'D',  '\xf0': 'd',
    '\xc8': 'E',  '\xc9': 'E', '\xca': 'E', '\xcb': 'E',
    '\xe8': 'e',  '\xe9': 'e', '\xea': 'e', '\xeb': 'e',
    '\xcc': 'I',  '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
    '\xec': 'i',  '\xed': 'i', '\xee': 'i', '\xef': 'i',
    '\xd1': 'N',  '\xf1': 'n',
    '\xd2': 'O',  '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O',
    '\xf2': 'o',  '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o',
    '\xd9': 'U',  '\xda': 'U', '\xdb': 'U', '\xdc': 'U',
    '\xf9': 'u',  '\xfa': 'u', '\xfb': 'u', '\xfc': 'u',
    '\xdd': 'Y',  '\xfd': 'y', '\xff': 'y',
    '\xc6': 'Ae', '\xe6': 'ae',
    '\xde': 'Th', '\xfe': 'th',
    '\xdf': 'ss',
    // Latin Extended-A block.
    '\u0100': 'A',  '\u0102': 'A', '\u0104': 'A',
    '\u0101': 'a',  '\u0103': 'a', '\u0105': 'a',
    '\u0106': 'C',  '\u0108': 'C', '\u010a': 'C', '\u010c': 'C',
    '\u0107': 'c',  '\u0109': 'c', '\u010b': 'c', '\u010d': 'c',
    '\u010e': 'D',  '\u0110': 'D', '\u010f': 'd', '\u0111': 'd',
    '\u0112': 'E',  '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E',
    '\u0113': 'e',  '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e',
    '\u011c': 'G',  '\u011e': 'G', '\u0120': 'G', '\u0122': 'G',
    '\u011d': 'g',  '\u011f': 'g', '\u0121': 'g', '\u0123': 'g',
    '\u0124': 'H',  '\u0126': 'H', '\u0125': 'h', '\u0127': 'h',
    '\u0128': 'I',  '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I',
    '\u0129': 'i',  '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i',
    '\u0134': 'J',  '\u0135': 'j',
    '\u0136': 'K',  '\u0137': 'k', '\u0138': 'k',
    '\u0139': 'L',  '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L',
    '\u013a': 'l',  '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l',
    '\u0143': 'N',  '\u0145': 'N', '\u0147': 'N', '\u014a': 'N',
    '\u0144': 'n',  '\u0146': 'n', '\u0148': 'n', '\u014b': 'n',
    '\u014c': 'O',  '\u014e': 'O', '\u0150': 'O',
    '\u014d': 'o',  '\u014f': 'o', '\u0151': 'o',
    '\u0154': 'R',  '\u0156': 'R', '\u0158': 'R',
    '\u0155': 'r',  '\u0157': 'r', '\u0159': 'r',
    '\u015a': 'S',  '\u015c': 'S', '\u015e': 'S', '\u0160': 'S',
    '\u015b': 's',  '\u015d': 's', '\u015f': 's', '\u0161': 's',
    '\u0162': 'T',  '\u0164': 'T', '\u0166': 'T',
    '\u0163': 't',  '\u0165': 't', '\u0167': 't',
    '\u0168': 'U',  '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U',
    '\u0169': 'u',  '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u',
    '\u0174': 'W',  '\u0175': 'w',
    '\u0176': 'Y',  '\u0177': 'y', '\u0178': 'Y',
    '\u0179': 'Z',  '\u017b': 'Z', '\u017d': 'Z',
    '\u017a': 'z',  '\u017c': 'z', '\u017e': 'z',
    '\u0132': 'IJ', '\u0133': 'ij',
    '\u0152': 'Oe', '\u0153': 'oe',
    '\u0149': "'n", '\u017f': 's'
  };

  /** Used to map characters to HTML entities. */
  var htmlEscapes = {
    '&': '&amp;',
    '<': '&lt;',
    '>': '&gt;',
    '"': '&quot;',
    "'": '&#39;'
  };

  /** Used to map HTML entities to characters. */
  var htmlUnescapes = {
    '&amp;': '&',
    '&lt;': '<',
    '&gt;': '>',
    '&quot;': '"',
    '&#39;': "'"
  };

  /** Used to escape characters for inclusion in compiled string literals. */
  var stringEscapes = {
    '\\': '\\',
    "'": "'",
    '\n': 'n',
    '\r': 'r',
    '\u2028': 'u2028',
    '\u2029': 'u2029'
  };

  /** Built-in method references without a dependency on `root`. */
  var freeParseFloat = parseFloat,
      freeParseInt = parseInt;

  /** Detect free variable `global` from Node.js. */
  var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;

  /** Detect free variable `self`. */
  var freeSelf = typeof self == 'object' && self && self.Object === Object && self;

  /** Used as a reference to the global object. */
  var root = freeGlobal || freeSelf || Function('return this')();

  /** Detect free variable `exports`. */
  var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;

  /** Detect free variable `module`. */
  var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;

  /** Detect the popular CommonJS extension `module.exports`. */
  var moduleExports = freeModule && freeModule.exports === freeExports;

  /** Detect free variable `process` from Node.js. */
  var freeProcess = moduleExports && freeGlobal.process;

  /** Used to access faster Node.js helpers. */
  var nodeUtil = (function() {
    try {
      // Use `util.types` for Node.js 10+.
      var types = freeModule && freeModule.require && freeModule.require('util').types;

      if (types) {
        return types;
      }

      // Legacy `process.binding('util')` for Node.js < 10.
      return freeProcess && freeProcess.binding && freeProcess.binding('util');
    } catch (e) {}
  }());

  /* Node.js helper references. */
  var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,
      nodeIsDate = nodeUtil && nodeUtil.isDate,
      nodeIsMap = nodeUtil && nodeUtil.isMap,
      nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,
      nodeIsSet = nodeUtil && nodeUtil.isSet,
      nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;

  /*--------------------------------------------------------------------------*/

  /**
   * A faster alternative to `Function#apply`, this function invokes `func`
   * with the `this` binding of `thisArg` and the arguments of `args`.
   *
   * @private
   * @param {Function} func The function to invoke.
   * @param {*} thisArg The `this` binding of `func`.
   * @param {Array} args The arguments to invoke `func` with.
   * @returns {*} Returns the result of `func`.
   */
  function apply(func, thisArg, args) {
    switch (args.length) {
      case 0: return func.call(thisArg);
      case 1: return func.call(thisArg, args[0]);
      case 2: return func.call(thisArg, args[0], args[1]);
      case 3: return func.call(thisArg, args[0], args[1], args[2]);
    }
    return func.apply(thisArg, args);
  }

  /**
   * A specialized version of `baseAggregator` for arrays.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} setter The function to set `accumulator` values.
   * @param {Function} iteratee The iteratee to transform keys.
   * @param {Object} accumulator The initial aggregated object.
   * @returns {Function} Returns `accumulator`.
   */
  function arrayAggregator(array, setter, iteratee, accumulator) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      var value = array[index];
      setter(accumulator, value, iteratee(value), array);
    }
    return accumulator;
  }

  /**
   * A specialized version of `_.forEach` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {Array} Returns `array`.
   */
  function arrayEach(array, iteratee) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      if (iteratee(array[index], index, array) === false) {
        break;
      }
    }
    return array;
  }

  /**
   * A specialized version of `_.forEachRight` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {Array} Returns `array`.
   */
  function arrayEachRight(array, iteratee) {
    var length = array == null ? 0 : array.length;

    while (length--) {
      if (iteratee(array[length], length, array) === false) {
        break;
      }
    }
    return array;
  }

  /**
   * A specialized version of `_.every` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} predicate The function invoked per iteration.
   * @returns {boolean} Returns `true` if all elements pass the predicate check,
   *  else `false`.
   */
  function arrayEvery(array, predicate) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      if (!predicate(array[index], index, array)) {
        return false;
      }
    }
    return true;
  }

  /**
   * A specialized version of `_.filter` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} predicate The function invoked per iteration.
   * @returns {Array} Returns the new filtered array.
   */
  function arrayFilter(array, predicate) {
    var index = -1,
        length = array == null ? 0 : array.length,
        resIndex = 0,
        result = [];

    while (++index < length) {
      var value = array[index];
      if (predicate(value, index, array)) {
        result[resIndex++] = value;
      }
    }
    return result;
  }

  /**
   * A specialized version of `_.includes` for arrays without support for
   * specifying an index to search from.
   *
   * @private
   * @param {Array} [array] The array to inspect.
   * @param {*} target The value to search for.
   * @returns {boolean} Returns `true` if `target` is found, else `false`.
   */
  function arrayIncludes(array, value) {
    var length = array == null ? 0 : array.length;
    return !!length && baseIndexOf(array, value, 0) > -1;
  }

  /**
   * This function is like `arrayIncludes` except that it accepts a comparator.
   *
   * @private
   * @param {Array} [array] The array to inspect.
   * @param {*} target The value to search for.
   * @param {Function} comparator The comparator invoked per element.
   * @returns {boolean} Returns `true` if `target` is found, else `false`.
   */
  function arrayIncludesWith(array, value, comparator) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      if (comparator(value, array[index])) {
        return true;
      }
    }
    return false;
  }

  /**
   * A specialized version of `_.map` for arrays without support for iteratee
   * shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {Array} Returns the new mapped array.
   */
  function arrayMap(array, iteratee) {
    var index = -1,
        length = array == null ? 0 : array.length,
        result = Array(length);

    while (++index < length) {
      result[index] = iteratee(array[index], index, array);
    }
    return result;
  }

  /**
   * Appends the elements of `values` to `array`.
   *
   * @private
   * @param {Array} array The array to modify.
   * @param {Array} values The values to append.
   * @returns {Array} Returns `array`.
   */
  function arrayPush(array, values) {
    var index = -1,
        length = values.length,
        offset = array.length;

    while (++index < length) {
      array[offset + index] = values[index];
    }
    return array;
  }

  /**
   * A specialized version of `_.reduce` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @param {*} [accumulator] The initial value.
   * @param {boolean} [initAccum] Specify using the first element of `array` as
   *  the initial value.
   * @returns {*} Returns the accumulated value.
   */
  function arrayReduce(array, iteratee, accumulator, initAccum) {
    var index = -1,
        length = array == null ? 0 : array.length;

    if (initAccum && length) {
      accumulator = array[++index];
    }
    while (++index < length) {
      accumulator = iteratee(accumulator, array[index], index, array);
    }
    return accumulator;
  }

  /**
   * A specialized version of `_.reduceRight` for arrays without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @param {*} [accumulator] The initial value.
   * @param {boolean} [initAccum] Specify using the last element of `array` as
   *  the initial value.
   * @returns {*} Returns the accumulated value.
   */
  function arrayReduceRight(array, iteratee, accumulator, initAccum) {
    var length = array == null ? 0 : array.length;
    if (initAccum && length) {
      accumulator = array[--length];
    }
    while (length--) {
      accumulator = iteratee(accumulator, array[length], length, array);
    }
    return accumulator;
  }

  /**
   * A specialized version of `_.some` for arrays without support for iteratee
   * shorthands.
   *
   * @private
   * @param {Array} [array] The array to iterate over.
   * @param {Function} predicate The function invoked per iteration.
   * @returns {boolean} Returns `true` if any element passes the predicate check,
   *  else `false`.
   */
  function arraySome(array, predicate) {
    var index = -1,
        length = array == null ? 0 : array.length;

    while (++index < length) {
      if (predicate(array[index], index, array)) {
        return true;
      }
    }
    return false;
  }

  /**
   * Gets the size of an ASCII `string`.
   *
   * @private
   * @param {string} string The string inspect.
   * @returns {number} Returns the string size.
   */
  var asciiSize = baseProperty('length');

  /**
   * Converts an ASCII `string` to an array.
   *
   * @private
   * @param {string} string The string to convert.
   * @returns {Array} Returns the converted array.
   */
  function asciiToArray(string) {
    return string.split('');
  }

  /**
   * Splits an ASCII `string` into an array of its words.
   *
   * @private
   * @param {string} The string to inspect.
   * @returns {Array} Returns the words of `string`.
   */
  function asciiWords(string) {
    return string.match(reAsciiWord) || [];
  }

  /**
   * The base implementation of methods like `_.findKey` and `_.findLastKey`,
   * without support for iteratee shorthands, which iterates over `collection`
   * using `eachFunc`.
   *
   * @private
   * @param {Array|Object} collection The collection to inspect.
   * @param {Function} predicate The function invoked per iteration.
   * @param {Function} eachFunc The function to iterate over `collection`.
   * @returns {*} Returns the found element or its key, else `undefined`.
   */
  function baseFindKey(collection, predicate, eachFunc) {
    var result;
    eachFunc(collection, function(value, key, collection) {
      if (predicate(value, key, collection)) {
        result = key;
        return false;
      }
    });
    return result;
  }

  /**
   * The base implementation of `_.findIndex` and `_.findLastIndex` without
   * support for iteratee shorthands.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {Function} predicate The function invoked per iteration.
   * @param {number} fromIndex The index to search from.
   * @param {boolean} [fromRight] Specify iterating from right to left.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function baseFindIndex(array, predicate, fromIndex, fromRight) {
    var length = array.length,
        index = fromIndex + (fromRight ? 1 : -1);

    while ((fromRight ? index-- : ++index < length)) {
      if (predicate(array[index], index, array)) {
        return index;
      }
    }
    return -1;
  }

  /**
   * The base implementation of `_.indexOf` without `fromIndex` bounds checks.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} value The value to search for.
   * @param {number} fromIndex The index to search from.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function baseIndexOf(array, value, fromIndex) {
    return value === value
      ? strictIndexOf(array, value, fromIndex)
      : baseFindIndex(array, baseIsNaN, fromIndex);
  }

  /**
   * This function is like `baseIndexOf` except that it accepts a comparator.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} value The value to search for.
   * @param {number} fromIndex The index to search from.
   * @param {Function} comparator The comparator invoked per element.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function baseIndexOfWith(array, value, fromIndex, comparator) {
    var index = fromIndex - 1,
        length = array.length;

    while (++index < length) {
      if (comparator(array[index], value)) {
        return index;
      }
    }
    return -1;
  }

  /**
   * The base implementation of `_.isNaN` without support for number objects.
   *
   * @private
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
   */
  function baseIsNaN(value) {
    return value !== value;
  }

  /**
   * The base implementation of `_.mean` and `_.meanBy` without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} array The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {number} Returns the mean.
   */
  function baseMean(array, iteratee) {
    var length = array == null ? 0 : array.length;
    return length ? (baseSum(array, iteratee) / length) : NAN;
  }

  /**
   * The base implementation of `_.property` without support for deep paths.
   *
   * @private
   * @param {string} key The key of the property to get.
   * @returns {Function} Returns the new accessor function.
   */
  function baseProperty(key) {
    return function(object) {
      return object == null ? undefined : object[key];
    };
  }

  /**
   * The base implementation of `_.propertyOf` without support for deep paths.
   *
   * @private
   * @param {Object} object The object to query.
   * @returns {Function} Returns the new accessor function.
   */
  function basePropertyOf(object) {
    return function(key) {
      return object == null ? undefined : object[key];
    };
  }

  /**
   * The base implementation of `_.reduce` and `_.reduceRight`, without support
   * for iteratee shorthands, which iterates over `collection` using `eachFunc`.
   *
   * @private
   * @param {Array|Object} collection The collection to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @param {*} accumulator The initial value.
   * @param {boolean} initAccum Specify using the first or last element of
   *  `collection` as the initial value.
   * @param {Function} eachFunc The function to iterate over `collection`.
   * @returns {*} Returns the accumulated value.
   */
  function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {
    eachFunc(collection, function(value, index, collection) {
      accumulator = initAccum
        ? (initAccum = false, value)
        : iteratee(accumulator, value, index, collection);
    });
    return accumulator;
  }

  /**
   * The base implementation of `_.sortBy` which uses `comparer` to define the
   * sort order of `array` and replaces criteria objects with their corresponding
   * values.
   *
   * @private
   * @param {Array} array The array to sort.
   * @param {Function} comparer The function to define sort order.
   * @returns {Array} Returns `array`.
   */
  function baseSortBy(array, comparer) {
    var length = array.length;

    array.sort(comparer);
    while (length--) {
      array[length] = array[length].value;
    }
    return array;
  }

  /**
   * The base implementation of `_.sum` and `_.sumBy` without support for
   * iteratee shorthands.
   *
   * @private
   * @param {Array} array The array to iterate over.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {number} Returns the sum.
   */
  function baseSum(array, iteratee) {
    var result,
        index = -1,
        length = array.length;

    while (++index < length) {
      var current = iteratee(array[index]);
      if (current !== undefined) {
        result = result === undefined ? current : (result + current);
      }
    }
    return result;
  }

  /**
   * The base implementation of `_.times` without support for iteratee shorthands
   * or max array length checks.
   *
   * @private
   * @param {number} n The number of times to invoke `iteratee`.
   * @param {Function} iteratee The function invoked per iteration.
   * @returns {Array} Returns the array of results.
   */
  function baseTimes(n, iteratee) {
    var index = -1,
        result = Array(n);

    while (++index < n) {
      result[index] = iteratee(index);
    }
    return result;
  }

  /**
   * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array
   * of key-value pairs for `object` corresponding to the property names of `props`.
   *
   * @private
   * @param {Object} object The object to query.
   * @param {Array} props The property names to get values for.
   * @returns {Object} Returns the key-value pairs.
   */
  function baseToPairs(object, props) {
    return arrayMap(props, function(key) {
      return [key, object[key]];
    });
  }

  /**
   * The base implementation of `_.unary` without support for storing metadata.
   *
   * @private
   * @param {Function} func The function to cap arguments for.
   * @returns {Function} Returns the new capped function.
   */
  function baseUnary(func) {
    return function(value) {
      return func(value);
    };
  }

  /**
   * The base implementation of `_.values` and `_.valuesIn` which creates an
   * array of `object` property values corresponding to the property names
   * of `props`.
   *
   * @private
   * @param {Object} object The object to query.
   * @param {Array} props The property names to get values for.
   * @returns {Object} Returns the array of property values.
   */
  function baseValues(object, props) {
    return arrayMap(props, function(key) {
      return object[key];
    });
  }

  /**
   * Checks if a `cache` value for `key` exists.
   *
   * @private
   * @param {Object} cache The cache to query.
   * @param {string} key The key of the entry to check.
   * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
   */
  function cacheHas(cache, key) {
    return cache.has(key);
  }

  /**
   * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol
   * that is not found in the character symbols.
   *
   * @private
   * @param {Array} strSymbols The string symbols to inspect.
   * @param {Array} chrSymbols The character symbols to find.
   * @returns {number} Returns the index of the first unmatched string symbol.
   */
  function charsStartIndex(strSymbols, chrSymbols) {
    var index = -1,
        length = strSymbols.length;

    while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
    return index;
  }

  /**
   * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol
   * that is not found in the character symbols.
   *
   * @private
   * @param {Array} strSymbols The string symbols to inspect.
   * @param {Array} chrSymbols The character symbols to find.
   * @returns {number} Returns the index of the last unmatched string symbol.
   */
  function charsEndIndex(strSymbols, chrSymbols) {
    var index = strSymbols.length;

    while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
    return index;
  }

  /**
   * Gets the number of `placeholder` occurrences in `array`.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} placeholder The placeholder to search for.
   * @returns {number} Returns the placeholder count.
   */
  function countHolders(array, placeholder) {
    var length = array.length,
        result = 0;

    while (length--) {
      if (array[length] === placeholder) {
        ++result;
      }
    }
    return result;
  }

  /**
   * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A
   * letters to basic Latin letters.
   *
   * @private
   * @param {string} letter The matched letter to deburr.
   * @returns {string} Returns the deburred letter.
   */
  var deburrLetter = basePropertyOf(deburredLetters);

  /**
   * Used by `_.escape` to convert characters to HTML entities.
   *
   * @private
   * @param {string} chr The matched character to escape.
   * @returns {string} Returns the escaped character.
   */
  var escapeHtmlChar = basePropertyOf(htmlEscapes);

  /**
   * Used by `_.template` to escape characters for inclusion in compiled string literals.
   *
   * @private
   * @param {string} chr The matched character to escape.
   * @returns {string} Returns the escaped character.
   */
  function escapeStringChar(chr) {
    return '\\' + stringEscapes[chr];
  }

  /**
   * Gets the value at `key` of `object`.
   *
   * @private
   * @param {Object} [object] The object to query.
   * @param {string} key The key of the property to get.
   * @returns {*} Returns the property value.
   */
  function getValue(object, key) {
    return object == null ? undefined : object[key];
  }

  /**
   * Checks if `string` contains Unicode symbols.
   *
   * @private
   * @param {string} string The string to inspect.
   * @returns {boolean} Returns `true` if a symbol is found, else `false`.
   */
  function hasUnicode(string) {
    return reHasUnicode.test(string);
  }

  /**
   * Checks if `string` contains a word composed of Unicode symbols.
   *
   * @private
   * @param {string} string The string to inspect.
   * @returns {boolean} Returns `true` if a word is found, else `false`.
   */
  function hasUnicodeWord(string) {
    return reHasUnicodeWord.test(string);
  }

  /**
   * Converts `iterator` to an array.
   *
   * @private
   * @param {Object} iterator The iterator to convert.
   * @returns {Array} Returns the converted array.
   */
  function iteratorToArray(iterator) {
    var data,
        result = [];

    while (!(data = iterator.next()).done) {
      result.push(data.value);
    }
    return result;
  }

  /**
   * Converts `map` to its key-value pairs.
   *
   * @private
   * @param {Object} map The map to convert.
   * @returns {Array} Returns the key-value pairs.
   */
  function mapToArray(map) {
    var index = -1,
        result = Array(map.size);

    map.forEach(function(value, key) {
      result[++index] = [key, value];
    });
    return result;
  }

  /**
   * Creates a unary function that invokes `func` with its argument transformed.
   *
   * @private
   * @param {Function} func The function to wrap.
   * @param {Function} transform The argument transform.
   * @returns {Function} Returns the new function.
   */
  function overArg(func, transform) {
    return function(arg) {
      return func(transform(arg));
    };
  }

  /**
   * Replaces all `placeholder` elements in `array` with an internal placeholder
   * and returns an array of their indexes.
   *
   * @private
   * @param {Array} array The array to modify.
   * @param {*} placeholder The placeholder to replace.
   * @returns {Array} Returns the new array of placeholder indexes.
   */
  function replaceHolders(array, placeholder) {
    var index = -1,
        length = array.length,
        resIndex = 0,
        result = [];

    while (++index < length) {
      var value = array[index];
      if (value === placeholder || value === PLACEHOLDER) {
        array[index] = PLACEHOLDER;
        result[resIndex++] = index;
      }
    }
    return result;
  }

  /**
   * Converts `set` to an array of its values.
   *
   * @private
   * @param {Object} set The set to convert.
   * @returns {Array} Returns the values.
   */
  function setToArray(set) {
    var index = -1,
        result = Array(set.size);

    set.forEach(function(value) {
      result[++index] = value;
    });
    return result;
  }

  /**
   * Converts `set` to its value-value pairs.
   *
   * @private
   * @param {Object} set The set to convert.
   * @returns {Array} Returns the value-value pairs.
   */
  function setToPairs(set) {
    var index = -1,
        result = Array(set.size);

    set.forEach(function(value) {
      result[++index] = [value, value];
    });
    return result;
  }

  /**
   * A specialized version of `_.indexOf` which performs strict equality
   * comparisons of values, i.e. `===`.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} value The value to search for.
   * @param {number} fromIndex The index to search from.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function strictIndexOf(array, value, fromIndex) {
    var index = fromIndex - 1,
        length = array.length;

    while (++index < length) {
      if (array[index] === value) {
        return index;
      }
    }
    return -1;
  }

  /**
   * A specialized version of `_.lastIndexOf` which performs strict equality
   * comparisons of values, i.e. `===`.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {*} value The value to search for.
   * @param {number} fromIndex The index to search from.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function strictLastIndexOf(array, value, fromIndex) {
    var index = fromIndex + 1;
    while (index--) {
      if (array[index] === value) {
        return index;
      }
    }
    return index;
  }

  /**
   * Gets the number of symbols in `string`.
   *
   * @private
   * @param {string} string The string to inspect.
   * @returns {number} Returns the string size.
   */
  function stringSize(string) {
    return hasUnicode(string)
      ? unicodeSize(string)
      : asciiSize(string);
  }

  /**
   * Converts `string` to an array.
   *
   * @private
   * @param {string} string The string to convert.
   * @returns {Array} Returns the converted array.
   */
  function stringToArray(string) {
    return hasUnicode(string)
      ? unicodeToArray(string)
      : asciiToArray(string);
  }

  /**
   * Used by `_.unescape` to convert HTML entities to characters.
   *
   * @private
   * @param {string} chr The matched character to unescape.
   * @returns {string} Returns the unescaped character.
   */
  var unescapeHtmlChar = basePropertyOf(htmlUnescapes);

  /**
   * Gets the size of a Unicode `string`.
   *
   * @private
   * @param {string} string The string inspect.
   * @returns {number} Returns the string size.
   */
  function unicodeSize(string) {
    var result = reUnicode.lastIndex = 0;
    while (reUnicode.test(string)) {
      ++result;
    }
    return result;
  }

  /**
   * Converts a Unicode `string` to an array.
   *
   * @private
   * @param {string} string The string to convert.
   * @returns {Array} Returns the converted array.
   */
  function unicodeToArray(string) {
    return string.match(reUnicode) || [];
  }

  /**
   * Splits a Unicode `string` into an array of its words.
   *
   * @private
   * @param {string} The string to inspect.
   * @returns {Array} Returns the words of `string`.
   */
  function unicodeWords(string) {
    return string.match(reUnicodeWord) || [];
  }

  /*--------------------------------------------------------------------------*/

  /**
   * Create a new pristine `lodash` function using the `context` object.
   *
   * @static
   * @memberOf _
   * @since 1.1.0
   * @category Util
   * @param {Object} [context=root] The context object.
   * @returns {Function} Returns a new `lodash` function.
   * @example
   *
   * _.mixin({ 'foo': _.constant('foo') });
   *
   * var lodash = _.runInContext();
   * lodash.mixin({ 'bar': lodash.constant('bar') });
   *
   * _.isFunction(_.foo);
   * // => true
   * _.isFunction(_.bar);
   * // => false
   *
   * lodash.isFunction(lodash.foo);
   * // => false
   * lodash.isFunction(lodash.bar);
   * // => true
   *
   * // Create a suped-up `defer` in Node.js.
   * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;
   */
  var runInContext = (function runInContext(context) {
    context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));

    /** Built-in constructor references. */
    var Array = context.Array,
        Date = context.Date,
        Error = context.Error,
        Function = context.Function,
        Math = context.Math,
        Object = context.Object,
        RegExp = context.RegExp,
        String = context.String,
        TypeError = context.TypeError;

    /** Used for built-in method references. */
    var arrayProto = Array.prototype,
        funcProto = Function.prototype,
        objectProto = Object.prototype;

    /** Used to detect overreaching core-js shims. */
    var coreJsData = context['__core-js_shared__'];

    /** Used to resolve the decompiled source of functions. */
    var funcToString = funcProto.toString;

    /** Used to check objects for own properties. */
    var hasOwnProperty = objectProto.hasOwnProperty;

    /** Used to generate unique IDs. */
    var idCounter = 0;

    /** Used to detect methods masquerading as native. */
    var maskSrcKey = (function() {
      var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
      return uid ? ('Symbol(src)_1.' + uid) : '';
    }());

    /**
     * Used to resolve the
     * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
     * of values.
     */
    var nativeObjectToString = objectProto.toString;

    /** Used to infer the `Object` constructor. */
    var objectCtorString = funcToString.call(Object);

    /** Used to restore the original `_` reference in `_.noConflict`. */
    var oldDash = root._;

    /** Used to detect if a method is native. */
    var reIsNative = RegExp('^' +
      funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
      .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
    );

    /** Built-in value references. */
    var Buffer = moduleExports ? context.Buffer : undefined,
        Symbol = context.Symbol,
        Uint8Array = context.Uint8Array,
        allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,
        getPrototype = overArg(Object.getPrototypeOf, Object),
        objectCreate = Object.create,
        propertyIsEnumerable = objectProto.propertyIsEnumerable,
        splice = arrayProto.splice,
        spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined,
        symIterator = Symbol ? Symbol.iterator : undefined,
        symToStringTag = Symbol ? Symbol.toStringTag : undefined;

    var defineProperty = (function() {
      try {
        var func = getNative(Object, 'defineProperty');
        func({}, '', {});
        return func;
      } catch (e) {}
    }());

    /** Mocked built-ins. */
    var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,
        ctxNow = Date && Date.now !== root.Date.now && Date.now,
        ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;

    /* Built-in method references for those with the same name as other `lodash` methods. */
    var nativeCeil = Math.ceil,
        nativeFloor = Math.floor,
        nativeGetSymbols = Object.getOwnPropertySymbols,
        nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,
        nativeIsFinite = context.isFinite,
        nativeJoin = arrayProto.join,
        nativeKeys = overArg(Object.keys, Object),
        nativeMax = Math.max,
        nativeMin = Math.min,
        nativeNow = Date.now,
        nativeParseInt = context.parseInt,
        nativeRandom = Math.random,
        nativeReverse = arrayProto.reverse;

    /* Built-in method references that are verified to be native. */
    var DataView = getNative(context, 'DataView'),
        Map = getNative(context, 'Map'),
        Promise = getNative(context, 'Promise'),
        Set = getNative(context, 'Set'),
        WeakMap = getNative(context, 'WeakMap'),
        nativeCreate = getNative(Object, 'create');

    /** Used to store function metadata. */
    var metaMap = WeakMap && new WeakMap;

    /** Used to lookup unminified function names. */
    var realNames = {};

    /** Used to detect maps, sets, and weakmaps. */
    var dataViewCtorString = toSource(DataView),
        mapCtorString = toSource(Map),
        promiseCtorString = toSource(Promise),
        setCtorString = toSource(Set),
        weakMapCtorString = toSource(WeakMap);

    /** Used to convert symbols to primitives and strings. */
    var symbolProto = Symbol ? Symbol.prototype : undefined,
        symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,
        symbolToString = symbolProto ? symbolProto.toString : undefined;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a `lodash` object which wraps `value` to enable implicit method
     * chain sequences. Methods that operate on and return arrays, collections,
     * and functions can be chained together. Methods that retrieve a single value
     * or may return a primitive value will automatically end the chain sequence
     * and return the unwrapped value. Otherwise, the value must be unwrapped
     * with `_#value`.
     *
     * Explicit chain sequences, which must be unwrapped with `_#value`, may be
     * enabled using `_.chain`.
     *
     * The execution of chained methods is lazy, that is, it's deferred until
     * `_#value` is implicitly or explicitly called.
     *
     * Lazy evaluation allows several methods to support shortcut fusion.
     * Shortcut fusion is an optimization to merge iteratee calls; this avoids
     * the creation of intermediate arrays and can greatly reduce the number of
     * iteratee executions. Sections of a chain sequence qualify for shortcut
     * fusion if the section is applied to an array and iteratees accept only
     * one argument. The heuristic for whether a section qualifies for shortcut
     * fusion is subject to change.
     *
     * Chaining is supported in custom builds as long as the `_#value` method is
     * directly or indirectly included in the build.
     *
     * In addition to lodash methods, wrappers have `Array` and `String` methods.
     *
     * The wrapper `Array` methods are:
     * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`
     *
     * The wrapper `String` methods are:
     * `replace` and `split`
     *
     * The wrapper methods that support shortcut fusion are:
     * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,
     * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,
     * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`
     *
     * The chainable wrapper methods are:
     * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,
     * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,
     * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,
     * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,
     * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,
     * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,
     * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,
     * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,
     * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,
     * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,
     * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,
     * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,
     * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,
     * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,
     * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,
     * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,
     * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,
     * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,
     * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,
     * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,
     * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,
     * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,
     * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,
     * `zipObject`, `zipObjectDeep`, and `zipWith`
     *
     * The wrapper methods that are **not** chainable by default are:
     * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,
     * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,
     * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,
     * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,
     * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,
     * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,
     * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,
     * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,
     * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,
     * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,
     * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,
     * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,
     * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,
     * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,
     * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,
     * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,
     * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,
     * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,
     * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,
     * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,
     * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,
     * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,
     * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,
     * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,
     * `upperFirst`, `value`, and `words`
     *
     * @name _
     * @constructor
     * @category Seq
     * @param {*} value The value to wrap in a `lodash` instance.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var wrapped = _([1, 2, 3]);
     *
     * // Returns an unwrapped value.
     * wrapped.reduce(_.add);
     * // => 6
     *
     * // Returns a wrapped value.
     * var squares = wrapped.map(square);
     *
     * _.isArray(squares);
     * // => false
     *
     * _.isArray(squares.value());
     * // => true
     */
    function lodash(value) {
      if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {
        if (value instanceof LodashWrapper) {
          return value;
        }
        if (hasOwnProperty.call(value, '__wrapped__')) {
          return wrapperClone(value);
        }
      }
      return new LodashWrapper(value);
    }

    /**
     * The base implementation of `_.create` without support for assigning
     * properties to the created object.
     *
     * @private
     * @param {Object} proto The object to inherit from.
     * @returns {Object} Returns the new object.
     */
    var baseCreate = (function() {
      function object() {}
      return function(proto) {
        if (!isObject(proto)) {
          return {};
        }
        if (objectCreate) {
          return objectCreate(proto);
        }
        object.prototype = proto;
        var result = new object;
        object.prototype = undefined;
        return result;
      };
    }());

    /**
     * The function whose prototype chain sequence wrappers inherit from.
     *
     * @private
     */
    function baseLodash() {
      // No operation performed.
    }

    /**
     * The base constructor for creating `lodash` wrapper objects.
     *
     * @private
     * @param {*} value The value to wrap.
     * @param {boolean} [chainAll] Enable explicit method chain sequences.
     */
    function LodashWrapper(value, chainAll) {
      this.__wrapped__ = value;
      this.__actions__ = [];
      this.__chain__ = !!chainAll;
      this.__index__ = 0;
      this.__values__ = undefined;
    }

    /**
     * By default, the template delimiters used by lodash are like those in
     * embedded Ruby (ERB) as well as ES2015 template strings. Change the
     * following template settings to use alternative delimiters.
     *
     * @static
     * @memberOf _
     * @type {Object}
     */
    lodash.templateSettings = {

      /**
       * Used to detect `data` property values to be HTML-escaped.
       *
       * @memberOf _.templateSettings
       * @type {RegExp}
       */
      'escape': reEscape,

      /**
       * Used to detect code to be evaluated.
       *
       * @memberOf _.templateSettings
       * @type {RegExp}
       */
      'evaluate': reEvaluate,

      /**
       * Used to detect `data` property values to inject.
       *
       * @memberOf _.templateSettings
       * @type {RegExp}
       */
      'interpolate': reInterpolate,

      /**
       * Used to reference the data object in the template text.
       *
       * @memberOf _.templateSettings
       * @type {string}
       */
      'variable': '',

      /**
       * Used to import variables into the compiled template.
       *
       * @memberOf _.templateSettings
       * @type {Object}
       */
      'imports': {

        /**
         * A reference to the `lodash` function.
         *
         * @memberOf _.templateSettings.imports
         * @type {Function}
         */
        '_': lodash
      }
    };

    // Ensure wrappers are instances of `baseLodash`.
    lodash.prototype = baseLodash.prototype;
    lodash.prototype.constructor = lodash;

    LodashWrapper.prototype = baseCreate(baseLodash.prototype);
    LodashWrapper.prototype.constructor = LodashWrapper;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.
     *
     * @private
     * @constructor
     * @param {*} value The value to wrap.
     */
    function LazyWrapper(value) {
      this.__wrapped__ = value;
      this.__actions__ = [];
      this.__dir__ = 1;
      this.__filtered__ = false;
      this.__iteratees__ = [];
      this.__takeCount__ = MAX_ARRAY_LENGTH;
      this.__views__ = [];
    }

    /**
     * Creates a clone of the lazy wrapper object.
     *
     * @private
     * @name clone
     * @memberOf LazyWrapper
     * @returns {Object} Returns the cloned `LazyWrapper` object.
     */
    function lazyClone() {
      var result = new LazyWrapper(this.__wrapped__);
      result.__actions__ = copyArray(this.__actions__);
      result.__dir__ = this.__dir__;
      result.__filtered__ = this.__filtered__;
      result.__iteratees__ = copyArray(this.__iteratees__);
      result.__takeCount__ = this.__takeCount__;
      result.__views__ = copyArray(this.__views__);
      return result;
    }

    /**
     * Reverses the direction of lazy iteration.
     *
     * @private
     * @name reverse
     * @memberOf LazyWrapper
     * @returns {Object} Returns the new reversed `LazyWrapper` object.
     */
    function lazyReverse() {
      if (this.__filtered__) {
        var result = new LazyWrapper(this);
        result.__dir__ = -1;
        result.__filtered__ = true;
      } else {
        result = this.clone();
        result.__dir__ *= -1;
      }
      return result;
    }

    /**
     * Extracts the unwrapped value from its lazy wrapper.
     *
     * @private
     * @name value
     * @memberOf LazyWrapper
     * @returns {*} Returns the unwrapped value.
     */
    function lazyValue() {
      var array = this.__wrapped__.value(),
          dir = this.__dir__,
          isArr = isArray(array),
          isRight = dir < 0,
          arrLength = isArr ? array.length : 0,
          view = getView(0, arrLength, this.__views__),
          start = view.start,
          end = view.end,
          length = end - start,
          index = isRight ? end : (start - 1),
          iteratees = this.__iteratees__,
          iterLength = iteratees.length,
          resIndex = 0,
          takeCount = nativeMin(length, this.__takeCount__);

      if (!isArr || (!isRight && arrLength == length && takeCount == length)) {
        return baseWrapperValue(array, this.__actions__);
      }
      var result = [];

      outer:
      while (length-- && resIndex < takeCount) {
        index += dir;

        var iterIndex = -1,
            value = array[index];

        while (++iterIndex < iterLength) {
          var data = iteratees[iterIndex],
              iteratee = data.iteratee,
              type = data.type,
              computed = iteratee(value);

          if (type == LAZY_MAP_FLAG) {
            value = computed;
          } else if (!computed) {
            if (type == LAZY_FILTER_FLAG) {
              continue outer;
            } else {
              break outer;
            }
          }
        }
        result[resIndex++] = value;
      }
      return result;
    }

    // Ensure `LazyWrapper` is an instance of `baseLodash`.
    LazyWrapper.prototype = baseCreate(baseLodash.prototype);
    LazyWrapper.prototype.constructor = LazyWrapper;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a hash object.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function Hash(entries) {
      var index = -1,
          length = entries == null ? 0 : entries.length;

      this.clear();
      while (++index < length) {
        var entry = entries[index];
        this.set(entry[0], entry[1]);
      }
    }

    /**
     * Removes all key-value entries from the hash.
     *
     * @private
     * @name clear
     * @memberOf Hash
     */
    function hashClear() {
      this.__data__ = nativeCreate ? nativeCreate(null) : {};
      this.size = 0;
    }

    /**
     * Removes `key` and its value from the hash.
     *
     * @private
     * @name delete
     * @memberOf Hash
     * @param {Object} hash The hash to modify.
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function hashDelete(key) {
      var result = this.has(key) && delete this.__data__[key];
      this.size -= result ? 1 : 0;
      return result;
    }

    /**
     * Gets the hash value for `key`.
     *
     * @private
     * @name get
     * @memberOf Hash
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function hashGet(key) {
      var data = this.__data__;
      if (nativeCreate) {
        var result = data[key];
        return result === HASH_UNDEFINED ? undefined : result;
      }
      return hasOwnProperty.call(data, key) ? data[key] : undefined;
    }

    /**
     * Checks if a hash value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf Hash
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function hashHas(key) {
      var data = this.__data__;
      return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);
    }

    /**
     * Sets the hash `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf Hash
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the hash instance.
     */
    function hashSet(key, value) {
      var data = this.__data__;
      this.size += this.has(key) ? 0 : 1;
      data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
      return this;
    }

    // Add methods to `Hash`.
    Hash.prototype.clear = hashClear;
    Hash.prototype['delete'] = hashDelete;
    Hash.prototype.get = hashGet;
    Hash.prototype.has = hashHas;
    Hash.prototype.set = hashSet;

    /*------------------------------------------------------------------------*/

    /**
     * Creates an list cache object.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function ListCache(entries) {
      var index = -1,
          length = entries == null ? 0 : entries.length;

      this.clear();
      while (++index < length) {
        var entry = entries[index];
        this.set(entry[0], entry[1]);
      }
    }

    /**
     * Removes all key-value entries from the list cache.
     *
     * @private
     * @name clear
     * @memberOf ListCache
     */
    function listCacheClear() {
      this.__data__ = [];
      this.size = 0;
    }

    /**
     * Removes `key` and its value from the list cache.
     *
     * @private
     * @name delete
     * @memberOf ListCache
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function listCacheDelete(key) {
      var data = this.__data__,
          index = assocIndexOf(data, key);

      if (index < 0) {
        return false;
      }
      var lastIndex = data.length - 1;
      if (index == lastIndex) {
        data.pop();
      } else {
        splice.call(data, index, 1);
      }
      --this.size;
      return true;
    }

    /**
     * Gets the list cache value for `key`.
     *
     * @private
     * @name get
     * @memberOf ListCache
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function listCacheGet(key) {
      var data = this.__data__,
          index = assocIndexOf(data, key);

      return index < 0 ? undefined : data[index][1];
    }

    /**
     * Checks if a list cache value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf ListCache
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function listCacheHas(key) {
      return assocIndexOf(this.__data__, key) > -1;
    }

    /**
     * Sets the list cache `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf ListCache
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the list cache instance.
     */
    function listCacheSet(key, value) {
      var data = this.__data__,
          index = assocIndexOf(data, key);

      if (index < 0) {
        ++this.size;
        data.push([key, value]);
      } else {
        data[index][1] = value;
      }
      return this;
    }

    // Add methods to `ListCache`.
    ListCache.prototype.clear = listCacheClear;
    ListCache.prototype['delete'] = listCacheDelete;
    ListCache.prototype.get = listCacheGet;
    ListCache.prototype.has = listCacheHas;
    ListCache.prototype.set = listCacheSet;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a map cache object to store key-value pairs.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function MapCache(entries) {
      var index = -1,
          length = entries == null ? 0 : entries.length;

      this.clear();
      while (++index < length) {
        var entry = entries[index];
        this.set(entry[0], entry[1]);
      }
    }

    /**
     * Removes all key-value entries from the map.
     *
     * @private
     * @name clear
     * @memberOf MapCache
     */
    function mapCacheClear() {
      this.size = 0;
      this.__data__ = {
        'hash': new Hash,
        'map': new (Map || ListCache),
        'string': new Hash
      };
    }

    /**
     * Removes `key` and its value from the map.
     *
     * @private
     * @name delete
     * @memberOf MapCache
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function mapCacheDelete(key) {
      var result = getMapData(this, key)['delete'](key);
      this.size -= result ? 1 : 0;
      return result;
    }

    /**
     * Gets the map value for `key`.
     *
     * @private
     * @name get
     * @memberOf MapCache
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function mapCacheGet(key) {
      return getMapData(this, key).get(key);
    }

    /**
     * Checks if a map value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf MapCache
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function mapCacheHas(key) {
      return getMapData(this, key).has(key);
    }

    /**
     * Sets the map `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf MapCache
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the map cache instance.
     */
    function mapCacheSet(key, value) {
      var data = getMapData(this, key),
          size = data.size;

      data.set(key, value);
      this.size += data.size == size ? 0 : 1;
      return this;
    }

    // Add methods to `MapCache`.
    MapCache.prototype.clear = mapCacheClear;
    MapCache.prototype['delete'] = mapCacheDelete;
    MapCache.prototype.get = mapCacheGet;
    MapCache.prototype.has = mapCacheHas;
    MapCache.prototype.set = mapCacheSet;

    /*------------------------------------------------------------------------*/

    /**
     *
     * Creates an array cache object to store unique values.
     *
     * @private
     * @constructor
     * @param {Array} [values] The values to cache.
     */
    function SetCache(values) {
      var index = -1,
          length = values == null ? 0 : values.length;

      this.__data__ = new MapCache;
      while (++index < length) {
        this.add(values[index]);
      }
    }

    /**
     * Adds `value` to the array cache.
     *
     * @private
     * @name add
     * @memberOf SetCache
     * @alias push
     * @param {*} value The value to cache.
     * @returns {Object} Returns the cache instance.
     */
    function setCacheAdd(value) {
      this.__data__.set(value, HASH_UNDEFINED);
      return this;
    }

    /**
     * Checks if `value` is in the array cache.
     *
     * @private
     * @name has
     * @memberOf SetCache
     * @param {*} value The value to search for.
     * @returns {number} Returns `true` if `value` is found, else `false`.
     */
    function setCacheHas(value) {
      return this.__data__.has(value);
    }

    // Add methods to `SetCache`.
    SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
    SetCache.prototype.has = setCacheHas;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a stack cache object to store key-value pairs.
     *
     * @private
     * @constructor
     * @param {Array} [entries] The key-value pairs to cache.
     */
    function Stack(entries) {
      var data = this.__data__ = new ListCache(entries);
      this.size = data.size;
    }

    /**
     * Removes all key-value entries from the stack.
     *
     * @private
     * @name clear
     * @memberOf Stack
     */
    function stackClear() {
      this.__data__ = new ListCache;
      this.size = 0;
    }

    /**
     * Removes `key` and its value from the stack.
     *
     * @private
     * @name delete
     * @memberOf Stack
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
     */
    function stackDelete(key) {
      var data = this.__data__,
          result = data['delete'](key);

      this.size = data.size;
      return result;
    }

    /**
     * Gets the stack value for `key`.
     *
     * @private
     * @name get
     * @memberOf Stack
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the entry value.
     */
    function stackGet(key) {
      return this.__data__.get(key);
    }

    /**
     * Checks if a stack value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf Stack
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function stackHas(key) {
      return this.__data__.has(key);
    }

    /**
     * Sets the stack `key` to `value`.
     *
     * @private
     * @name set
     * @memberOf Stack
     * @param {string} key The key of the value to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns the stack cache instance.
     */
    function stackSet(key, value) {
      var data = this.__data__;
      if (data instanceof ListCache) {
        var pairs = data.__data__;
        if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
          pairs.push([key, value]);
          this.size = ++data.size;
          return this;
        }
        data = this.__data__ = new MapCache(pairs);
      }
      data.set(key, value);
      this.size = data.size;
      return this;
    }

    // Add methods to `Stack`.
    Stack.prototype.clear = stackClear;
    Stack.prototype['delete'] = stackDelete;
    Stack.prototype.get = stackGet;
    Stack.prototype.has = stackHas;
    Stack.prototype.set = stackSet;

    /*------------------------------------------------------------------------*/

    /**
     * Creates an array of the enumerable property names of the array-like `value`.
     *
     * @private
     * @param {*} value The value to query.
     * @param {boolean} inherited Specify returning inherited property names.
     * @returns {Array} Returns the array of property names.
     */
    function arrayLikeKeys(value, inherited) {
      var isArr = isArray(value),
          isArg = !isArr && isArguments(value),
          isBuff = !isArr && !isArg && isBuffer(value),
          isType = !isArr && !isArg && !isBuff && isTypedArray(value),
          skipIndexes = isArr || isArg || isBuff || isType,
          result = skipIndexes ? baseTimes(value.length, String) : [],
          length = result.length;

      for (var key in value) {
        if ((inherited || hasOwnProperty.call(value, key)) &&
            !(skipIndexes && (
               // Safari 9 has enumerable `arguments.length` in strict mode.
               key == 'length' ||
               // Node.js 0.10 has enumerable non-index properties on buffers.
               (isBuff && (key == 'offset' || key == 'parent')) ||
               // PhantomJS 2 has enumerable non-index properties on typed arrays.
               (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||
               // Skip index properties.
               isIndex(key, length)
            ))) {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * A specialized version of `_.sample` for arrays.
     *
     * @private
     * @param {Array} array The array to sample.
     * @returns {*} Returns the random element.
     */
    function arraySample(array) {
      var length = array.length;
      return length ? array[baseRandom(0, length - 1)] : undefined;
    }

    /**
     * A specialized version of `_.sampleSize` for arrays.
     *
     * @private
     * @param {Array} array The array to sample.
     * @param {number} n The number of elements to sample.
     * @returns {Array} Returns the random elements.
     */
    function arraySampleSize(array, n) {
      return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));
    }

    /**
     * A specialized version of `_.shuffle` for arrays.
     *
     * @private
     * @param {Array} array The array to shuffle.
     * @returns {Array} Returns the new shuffled array.
     */
    function arrayShuffle(array) {
      return shuffleSelf(copyArray(array));
    }

    /**
     * This function is like `assignValue` except that it doesn't assign
     * `undefined` values.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {string} key The key of the property to assign.
     * @param {*} value The value to assign.
     */
    function assignMergeValue(object, key, value) {
      if ((value !== undefined && !eq(object[key], value)) ||
          (value === undefined && !(key in object))) {
        baseAssignValue(object, key, value);
      }
    }

    /**
     * Assigns `value` to `key` of `object` if the existing value is not equivalent
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {string} key The key of the property to assign.
     * @param {*} value The value to assign.
     */
    function assignValue(object, key, value) {
      var objValue = object[key];
      if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
          (value === undefined && !(key in object))) {
        baseAssignValue(object, key, value);
      }
    }

    /**
     * Gets the index at which the `key` is found in `array` of key-value pairs.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {*} key The key to search for.
     * @returns {number} Returns the index of the matched value, else `-1`.
     */
    function assocIndexOf(array, key) {
      var length = array.length;
      while (length--) {
        if (eq(array[length][0], key)) {
          return length;
        }
      }
      return -1;
    }

    /**
     * Aggregates elements of `collection` on `accumulator` with keys transformed
     * by `iteratee` and values set by `setter`.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} setter The function to set `accumulator` values.
     * @param {Function} iteratee The iteratee to transform keys.
     * @param {Object} accumulator The initial aggregated object.
     * @returns {Function} Returns `accumulator`.
     */
    function baseAggregator(collection, setter, iteratee, accumulator) {
      baseEach(collection, function(value, key, collection) {
        setter(accumulator, value, iteratee(value), collection);
      });
      return accumulator;
    }

    /**
     * The base implementation of `_.assign` without support for multiple sources
     * or `customizer` functions.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @returns {Object} Returns `object`.
     */
    function baseAssign(object, source) {
      return object && copyObject(source, keys(source), object);
    }

    /**
     * The base implementation of `_.assignIn` without support for multiple sources
     * or `customizer` functions.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @returns {Object} Returns `object`.
     */
    function baseAssignIn(object, source) {
      return object && copyObject(source, keysIn(source), object);
    }

    /**
     * The base implementation of `assignValue` and `assignMergeValue` without
     * value checks.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {string} key The key of the property to assign.
     * @param {*} value The value to assign.
     */
    function baseAssignValue(object, key, value) {
      if (key == '__proto__' && defineProperty) {
        defineProperty(object, key, {
          'configurable': true,
          'enumerable': true,
          'value': value,
          'writable': true
        });
      } else {
        object[key] = value;
      }
    }

    /**
     * The base implementation of `_.at` without support for individual paths.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {string[]} paths The property paths to pick.
     * @returns {Array} Returns the picked elements.
     */
    function baseAt(object, paths) {
      var index = -1,
          length = paths.length,
          result = Array(length),
          skip = object == null;

      while (++index < length) {
        result[index] = skip ? undefined : get(object, paths[index]);
      }
      return result;
    }

    /**
     * The base implementation of `_.clamp` which doesn't coerce arguments.
     *
     * @private
     * @param {number} number The number to clamp.
     * @param {number} [lower] The lower bound.
     * @param {number} upper The upper bound.
     * @returns {number} Returns the clamped number.
     */
    function baseClamp(number, lower, upper) {
      if (number === number) {
        if (upper !== undefined) {
          number = number <= upper ? number : upper;
        }
        if (lower !== undefined) {
          number = number >= lower ? number : lower;
        }
      }
      return number;
    }

    /**
     * The base implementation of `_.clone` and `_.cloneDeep` which tracks
     * traversed objects.
     *
     * @private
     * @param {*} value The value to clone.
     * @param {boolean} bitmask The bitmask flags.
     *  1 - Deep clone
     *  2 - Flatten inherited properties
     *  4 - Clone symbols
     * @param {Function} [customizer] The function to customize cloning.
     * @param {string} [key] The key of `value`.
     * @param {Object} [object] The parent object of `value`.
     * @param {Object} [stack] Tracks traversed objects and their clone counterparts.
     * @returns {*} Returns the cloned value.
     */
    function baseClone(value, bitmask, customizer, key, object, stack) {
      var result,
          isDeep = bitmask & CLONE_DEEP_FLAG,
          isFlat = bitmask & CLONE_FLAT_FLAG,
          isFull = bitmask & CLONE_SYMBOLS_FLAG;

      if (customizer) {
        result = object ? customizer(value, key, object, stack) : customizer(value);
      }
      if (result !== undefined) {
        return result;
      }
      if (!isObject(value)) {
        return value;
      }
      var isArr = isArray(value);
      if (isArr) {
        result = initCloneArray(value);
        if (!isDeep) {
          return copyArray(value, result);
        }
      } else {
        var tag = getTag(value),
            isFunc = tag == funcTag || tag == genTag;

        if (isBuffer(value)) {
          return cloneBuffer(value, isDeep);
        }
        if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
          result = (isFlat || isFunc) ? {} : initCloneObject(value);
          if (!isDeep) {
            return isFlat
              ? copySymbolsIn(value, baseAssignIn(result, value))
              : copySymbols(value, baseAssign(result, value));
          }
        } else {
          if (!cloneableTags[tag]) {
            return object ? value : {};
          }
          result = initCloneByTag(value, tag, isDeep);
        }
      }
      // Check for circular references and return its corresponding clone.
      stack || (stack = new Stack);
      var stacked = stack.get(value);
      if (stacked) {
        return stacked;
      }
      stack.set(value, result);

      if (isSet(value)) {
        value.forEach(function(subValue) {
          result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));
        });
      } else if (isMap(value)) {
        value.forEach(function(subValue, key) {
          result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));
        });
      }

      var keysFunc = isFull
        ? (isFlat ? getAllKeysIn : getAllKeys)
        : (isFlat ? keysIn : keys);

      var props = isArr ? undefined : keysFunc(value);
      arrayEach(props || value, function(subValue, key) {
        if (props) {
          key = subValue;
          subValue = value[key];
        }
        // Recursively populate clone (susceptible to call stack limits).
        assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));
      });
      return result;
    }

    /**
     * The base implementation of `_.conforms` which doesn't clone `source`.
     *
     * @private
     * @param {Object} source The object of property predicates to conform to.
     * @returns {Function} Returns the new spec function.
     */
    function baseConforms(source) {
      var props = keys(source);
      return function(object) {
        return baseConformsTo(object, source, props);
      };
    }

    /**
     * The base implementation of `_.conformsTo` which accepts `props` to check.
     *
     * @private
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property predicates to conform to.
     * @returns {boolean} Returns `true` if `object` conforms, else `false`.
     */
    function baseConformsTo(object, source, props) {
      var length = props.length;
      if (object == null) {
        return !length;
      }
      object = Object(object);
      while (length--) {
        var key = props[length],
            predicate = source[key],
            value = object[key];

        if ((value === undefined && !(key in object)) || !predicate(value)) {
          return false;
        }
      }
      return true;
    }

    /**
     * The base implementation of `_.delay` and `_.defer` which accepts `args`
     * to provide to `func`.
     *
     * @private
     * @param {Function} func The function to delay.
     * @param {number} wait The number of milliseconds to delay invocation.
     * @param {Array} args The arguments to provide to `func`.
     * @returns {number|Object} Returns the timer id or timeout object.
     */
    function baseDelay(func, wait, args) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      return setTimeout(function() { func.apply(undefined, args); }, wait);
    }

    /**
     * The base implementation of methods like `_.difference` without support
     * for excluding multiple arrays or iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {Array} values The values to exclude.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     */
    function baseDifference(array, values, iteratee, comparator) {
      var index = -1,
          includes = arrayIncludes,
          isCommon = true,
          length = array.length,
          result = [],
          valuesLength = values.length;

      if (!length) {
        return result;
      }
      if (iteratee) {
        values = arrayMap(values, baseUnary(iteratee));
      }
      if (comparator) {
        includes = arrayIncludesWith;
        isCommon = false;
      }
      else if (values.length >= LARGE_ARRAY_SIZE) {
        includes = cacheHas;
        isCommon = false;
        values = new SetCache(values);
      }
      outer:
      while (++index < length) {
        var value = array[index],
            computed = iteratee == null ? value : iteratee(value);

        value = (comparator || value !== 0) ? value : 0;
        if (isCommon && computed === computed) {
          var valuesIndex = valuesLength;
          while (valuesIndex--) {
            if (values[valuesIndex] === computed) {
              continue outer;
            }
          }
          result.push(value);
        }
        else if (!includes(values, computed, comparator)) {
          result.push(value);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.forEach` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array|Object} Returns `collection`.
     */
    var baseEach = createBaseEach(baseForOwn);

    /**
     * The base implementation of `_.forEachRight` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array|Object} Returns `collection`.
     */
    var baseEachRight = createBaseEach(baseForOwnRight, true);

    /**
     * The base implementation of `_.every` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {boolean} Returns `true` if all elements pass the predicate check,
     *  else `false`
     */
    function baseEvery(collection, predicate) {
      var result = true;
      baseEach(collection, function(value, index, collection) {
        result = !!predicate(value, index, collection);
        return result;
      });
      return result;
    }

    /**
     * The base implementation of methods like `_.max` and `_.min` which accepts a
     * `comparator` to determine the extremum value.
     *
     * @private
     * @param {Array} array The array to iterate over.
     * @param {Function} iteratee The iteratee invoked per iteration.
     * @param {Function} comparator The comparator used to compare values.
     * @returns {*} Returns the extremum value.
     */
    function baseExtremum(array, iteratee, comparator) {
      var index = -1,
          length = array.length;

      while (++index < length) {
        var value = array[index],
            current = iteratee(value);

        if (current != null && (computed === undefined
              ? (current === current && !isSymbol(current))
              : comparator(current, computed)
            )) {
          var computed = current,
              result = value;
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.fill` without an iteratee call guard.
     *
     * @private
     * @param {Array} array The array to fill.
     * @param {*} value The value to fill `array` with.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns `array`.
     */
    function baseFill(array, value, start, end) {
      var length = array.length;

      start = toInteger(start);
      if (start < 0) {
        start = -start > length ? 0 : (length + start);
      }
      end = (end === undefined || end > length) ? length : toInteger(end);
      if (end < 0) {
        end += length;
      }
      end = start > end ? 0 : toLength(end);
      while (start < end) {
        array[start++] = value;
      }
      return array;
    }

    /**
     * The base implementation of `_.filter` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {Array} Returns the new filtered array.
     */
    function baseFilter(collection, predicate) {
      var result = [];
      baseEach(collection, function(value, index, collection) {
        if (predicate(value, index, collection)) {
          result.push(value);
        }
      });
      return result;
    }

    /**
     * The base implementation of `_.flatten` with support for restricting flattening.
     *
     * @private
     * @param {Array} array The array to flatten.
     * @param {number} depth The maximum recursion depth.
     * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.
     * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.
     * @param {Array} [result=[]] The initial result value.
     * @returns {Array} Returns the new flattened array.
     */
    function baseFlatten(array, depth, predicate, isStrict, result) {
      var index = -1,
          length = array.length;

      predicate || (predicate = isFlattenable);
      result || (result = []);

      while (++index < length) {
        var value = array[index];
        if (depth > 0 && predicate(value)) {
          if (depth > 1) {
            // Recursively flatten arrays (susceptible to call stack limits).
            baseFlatten(value, depth - 1, predicate, isStrict, result);
          } else {
            arrayPush(result, value);
          }
        } else if (!isStrict) {
          result[result.length] = value;
        }
      }
      return result;
    }

    /**
     * The base implementation of `baseForOwn` which iterates over `object`
     * properties returned by `keysFunc` and invokes `iteratee` for each property.
     * Iteratee functions may exit iteration early by explicitly returning `false`.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {Function} keysFunc The function to get the keys of `object`.
     * @returns {Object} Returns `object`.
     */
    var baseFor = createBaseFor();

    /**
     * This function is like `baseFor` except that it iterates over properties
     * in the opposite order.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {Function} keysFunc The function to get the keys of `object`.
     * @returns {Object} Returns `object`.
     */
    var baseForRight = createBaseFor(true);

    /**
     * The base implementation of `_.forOwn` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Object} Returns `object`.
     */
    function baseForOwn(object, iteratee) {
      return object && baseFor(object, iteratee, keys);
    }

    /**
     * The base implementation of `_.forOwnRight` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Object} Returns `object`.
     */
    function baseForOwnRight(object, iteratee) {
      return object && baseForRight(object, iteratee, keys);
    }

    /**
     * The base implementation of `_.functions` which creates an array of
     * `object` function property names filtered from `props`.
     *
     * @private
     * @param {Object} object The object to inspect.
     * @param {Array} props The property names to filter.
     * @returns {Array} Returns the function names.
     */
    function baseFunctions(object, props) {
      return arrayFilter(props, function(key) {
        return isFunction(object[key]);
      });
    }

    /**
     * The base implementation of `_.get` without support for default values.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the property to get.
     * @returns {*} Returns the resolved value.
     */
    function baseGet(object, path) {
      path = castPath(path, object);

      var index = 0,
          length = path.length;

      while (object != null && index < length) {
        object = object[toKey(path[index++])];
      }
      return (index && index == length) ? object : undefined;
    }

    /**
     * The base implementation of `getAllKeys` and `getAllKeysIn` which uses
     * `keysFunc` and `symbolsFunc` to get the enumerable property names and
     * symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Function} keysFunc The function to get the keys of `object`.
     * @param {Function} symbolsFunc The function to get the symbols of `object`.
     * @returns {Array} Returns the array of property names and symbols.
     */
    function baseGetAllKeys(object, keysFunc, symbolsFunc) {
      var result = keysFunc(object);
      return isArray(object) ? result : arrayPush(result, symbolsFunc(object));
    }

    /**
     * The base implementation of `getTag` without fallbacks for buggy environments.
     *
     * @private
     * @param {*} value The value to query.
     * @returns {string} Returns the `toStringTag`.
     */
    function baseGetTag(value) {
      if (value == null) {
        return value === undefined ? undefinedTag : nullTag;
      }
      return (symToStringTag && symToStringTag in Object(value))
        ? getRawTag(value)
        : objectToString(value);
    }

    /**
     * The base implementation of `_.gt` which doesn't coerce arguments.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is greater than `other`,
     *  else `false`.
     */
    function baseGt(value, other) {
      return value > other;
    }

    /**
     * The base implementation of `_.has` without support for deep paths.
     *
     * @private
     * @param {Object} [object] The object to query.
     * @param {Array|string} key The key to check.
     * @returns {boolean} Returns `true` if `key` exists, else `false`.
     */
    function baseHas(object, key) {
      return object != null && hasOwnProperty.call(object, key);
    }

    /**
     * The base implementation of `_.hasIn` without support for deep paths.
     *
     * @private
     * @param {Object} [object] The object to query.
     * @param {Array|string} key The key to check.
     * @returns {boolean} Returns `true` if `key` exists, else `false`.
     */
    function baseHasIn(object, key) {
      return object != null && key in Object(object);
    }

    /**
     * The base implementation of `_.inRange` which doesn't coerce arguments.
     *
     * @private
     * @param {number} number The number to check.
     * @param {number} start The start of the range.
     * @param {number} end The end of the range.
     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
     */
    function baseInRange(number, start, end) {
      return number >= nativeMin(start, end) && number < nativeMax(start, end);
    }

    /**
     * The base implementation of methods like `_.intersection`, without support
     * for iteratee shorthands, that accepts an array of arrays to inspect.
     *
     * @private
     * @param {Array} arrays The arrays to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of shared values.
     */
    function baseIntersection(arrays, iteratee, comparator) {
      var includes = comparator ? arrayIncludesWith : arrayIncludes,
          length = arrays[0].length,
          othLength = arrays.length,
          othIndex = othLength,
          caches = Array(othLength),
          maxLength = Infinity,
          result = [];

      while (othIndex--) {
        var array = arrays[othIndex];
        if (othIndex && iteratee) {
          array = arrayMap(array, baseUnary(iteratee));
        }
        maxLength = nativeMin(array.length, maxLength);
        caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))
          ? new SetCache(othIndex && array)
          : undefined;
      }
      array = arrays[0];

      var index = -1,
          seen = caches[0];

      outer:
      while (++index < length && result.length < maxLength) {
        var value = array[index],
            computed = iteratee ? iteratee(value) : value;

        value = (comparator || value !== 0) ? value : 0;
        if (!(seen
              ? cacheHas(seen, computed)
              : includes(result, computed, comparator)
            )) {
          othIndex = othLength;
          while (--othIndex) {
            var cache = caches[othIndex];
            if (!(cache
                  ? cacheHas(cache, computed)
                  : includes(arrays[othIndex], computed, comparator))
                ) {
              continue outer;
            }
          }
          if (seen) {
            seen.push(computed);
          }
          result.push(value);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.invert` and `_.invertBy` which inverts
     * `object` with values transformed by `iteratee` and set by `setter`.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} setter The function to set `accumulator` values.
     * @param {Function} iteratee The iteratee to transform values.
     * @param {Object} accumulator The initial inverted object.
     * @returns {Function} Returns `accumulator`.
     */
    function baseInverter(object, setter, iteratee, accumulator) {
      baseForOwn(object, function(value, key, object) {
        setter(accumulator, iteratee(value), key, object);
      });
      return accumulator;
    }

    /**
     * The base implementation of `_.invoke` without support for individual
     * method arguments.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the method to invoke.
     * @param {Array} args The arguments to invoke the method with.
     * @returns {*} Returns the result of the invoked method.
     */
    function baseInvoke(object, path, args) {
      path = castPath(path, object);
      object = parent(object, path);
      var func = object == null ? object : object[toKey(last(path))];
      return func == null ? undefined : apply(func, object, args);
    }

    /**
     * The base implementation of `_.isArguments`.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an `arguments` object,
     */
    function baseIsArguments(value) {
      return isObjectLike(value) && baseGetTag(value) == argsTag;
    }

    /**
     * The base implementation of `_.isArrayBuffer` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
     */
    function baseIsArrayBuffer(value) {
      return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;
    }

    /**
     * The base implementation of `_.isDate` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
     */
    function baseIsDate(value) {
      return isObjectLike(value) && baseGetTag(value) == dateTag;
    }

    /**
     * The base implementation of `_.isEqual` which supports partial comparisons
     * and tracks traversed objects.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @param {boolean} bitmask The bitmask flags.
     *  1 - Unordered comparison
     *  2 - Partial comparison
     * @param {Function} [customizer] The function to customize comparisons.
     * @param {Object} [stack] Tracks traversed `value` and `other` objects.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     */
    function baseIsEqual(value, other, bitmask, customizer, stack) {
      if (value === other) {
        return true;
      }
      if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {
        return value !== value && other !== other;
      }
      return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
    }

    /**
     * A specialized version of `baseIsEqual` for arrays and objects which performs
     * deep comparisons and tracks traversed objects enabling objects with circular
     * references to be compared.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
     * @param {Function} customizer The function to customize comparisons.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Object} [stack] Tracks traversed `object` and `other` objects.
     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
     */
    function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
      var objIsArr = isArray(object),
          othIsArr = isArray(other),
          objTag = objIsArr ? arrayTag : getTag(object),
          othTag = othIsArr ? arrayTag : getTag(other);

      objTag = objTag == argsTag ? objectTag : objTag;
      othTag = othTag == argsTag ? objectTag : othTag;

      var objIsObj = objTag == objectTag,
          othIsObj = othTag == objectTag,
          isSameTag = objTag == othTag;

      if (isSameTag && isBuffer(object)) {
        if (!isBuffer(other)) {
          return false;
        }
        objIsArr = true;
        objIsObj = false;
      }
      if (isSameTag && !objIsObj) {
        stack || (stack = new Stack);
        return (objIsArr || isTypedArray(object))
          ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
          : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
      }
      if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
        var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
            othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');

        if (objIsWrapped || othIsWrapped) {
          var objUnwrapped = objIsWrapped ? object.value() : object,
              othUnwrapped = othIsWrapped ? other.value() : other;

          stack || (stack = new Stack);
          return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
        }
      }
      if (!isSameTag) {
        return false;
      }
      stack || (stack = new Stack);
      return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
    }

    /**
     * The base implementation of `_.isMap` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a map, else `false`.
     */
    function baseIsMap(value) {
      return isObjectLike(value) && getTag(value) == mapTag;
    }

    /**
     * The base implementation of `_.isMatch` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property values to match.
     * @param {Array} matchData The property names, values, and compare flags to match.
     * @param {Function} [customizer] The function to customize comparisons.
     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
     */
    function baseIsMatch(object, source, matchData, customizer) {
      var index = matchData.length,
          length = index,
          noCustomizer = !customizer;

      if (object == null) {
        return !length;
      }
      object = Object(object);
      while (index--) {
        var data = matchData[index];
        if ((noCustomizer && data[2])
              ? data[1] !== object[data[0]]
              : !(data[0] in object)
            ) {
          return false;
        }
      }
      while (++index < length) {
        data = matchData[index];
        var key = data[0],
            objValue = object[key],
            srcValue = data[1];

        if (noCustomizer && data[2]) {
          if (objValue === undefined && !(key in object)) {
            return false;
          }
        } else {
          var stack = new Stack;
          if (customizer) {
            var result = customizer(objValue, srcValue, key, object, source, stack);
          }
          if (!(result === undefined
                ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)
                : result
              )) {
            return false;
          }
        }
      }
      return true;
    }

    /**
     * The base implementation of `_.isNative` without bad shim checks.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a native function,
     *  else `false`.
     */
    function baseIsNative(value) {
      if (!isObject(value) || isMasked(value)) {
        return false;
      }
      var pattern = isFunction(value) ? reIsNative : reIsHostCtor;
      return pattern.test(toSource(value));
    }

    /**
     * The base implementation of `_.isRegExp` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
     */
    function baseIsRegExp(value) {
      return isObjectLike(value) && baseGetTag(value) == regexpTag;
    }

    /**
     * The base implementation of `_.isSet` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a set, else `false`.
     */
    function baseIsSet(value) {
      return isObjectLike(value) && getTag(value) == setTag;
    }

    /**
     * The base implementation of `_.isTypedArray` without Node.js optimizations.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
     */
    function baseIsTypedArray(value) {
      return isObjectLike(value) &&
        isLength(value.length) && !!typedArrayTags[baseGetTag(value)];
    }

    /**
     * The base implementation of `_.iteratee`.
     *
     * @private
     * @param {*} [value=_.identity] The value to convert to an iteratee.
     * @returns {Function} Returns the iteratee.
     */
    function baseIteratee(value) {
      // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.
      // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.
      if (typeof value == 'function') {
        return value;
      }
      if (value == null) {
        return identity;
      }
      if (typeof value == 'object') {
        return isArray(value)
          ? baseMatchesProperty(value[0], value[1])
          : baseMatches(value);
      }
      return property(value);
    }

    /**
     * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     */
    function baseKeys(object) {
      if (!isPrototype(object)) {
        return nativeKeys(object);
      }
      var result = [];
      for (var key in Object(object)) {
        if (hasOwnProperty.call(object, key) && key != 'constructor') {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     */
    function baseKeysIn(object) {
      if (!isObject(object)) {
        return nativeKeysIn(object);
      }
      var isProto = isPrototype(object),
          result = [];

      for (var key in object) {
        if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.lt` which doesn't coerce arguments.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is less than `other`,
     *  else `false`.
     */
    function baseLt(value, other) {
      return value < other;
    }

    /**
     * The base implementation of `_.map` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array} Returns the new mapped array.
     */
    function baseMap(collection, iteratee) {
      var index = -1,
          result = isArrayLike(collection) ? Array(collection.length) : [];

      baseEach(collection, function(value, key, collection) {
        result[++index] = iteratee(value, key, collection);
      });
      return result;
    }

    /**
     * The base implementation of `_.matches` which doesn't clone `source`.
     *
     * @private
     * @param {Object} source The object of property values to match.
     * @returns {Function} Returns the new spec function.
     */
    function baseMatches(source) {
      var matchData = getMatchData(source);
      if (matchData.length == 1 && matchData[0][2]) {
        return matchesStrictComparable(matchData[0][0], matchData[0][1]);
      }
      return function(object) {
        return object === source || baseIsMatch(object, source, matchData);
      };
    }

    /**
     * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.
     *
     * @private
     * @param {string} path The path of the property to get.
     * @param {*} srcValue The value to match.
     * @returns {Function} Returns the new spec function.
     */
    function baseMatchesProperty(path, srcValue) {
      if (isKey(path) && isStrictComparable(srcValue)) {
        return matchesStrictComparable(toKey(path), srcValue);
      }
      return function(object) {
        var objValue = get(object, path);
        return (objValue === undefined && objValue === srcValue)
          ? hasIn(object, path)
          : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);
      };
    }

    /**
     * The base implementation of `_.merge` without support for multiple sources.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @param {number} srcIndex The index of `source`.
     * @param {Function} [customizer] The function to customize merged values.
     * @param {Object} [stack] Tracks traversed source values and their merged
     *  counterparts.
     */
    function baseMerge(object, source, srcIndex, customizer, stack) {
      if (object === source) {
        return;
      }
      baseFor(source, function(srcValue, key) {
        stack || (stack = new Stack);
        if (isObject(srcValue)) {
          baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
        }
        else {
          var newValue = customizer
            ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)
            : undefined;

          if (newValue === undefined) {
            newValue = srcValue;
          }
          assignMergeValue(object, key, newValue);
        }
      }, keysIn);
    }

    /**
     * A specialized version of `baseMerge` for arrays and objects which performs
     * deep merges and tracks traversed objects enabling objects with circular
     * references to be merged.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @param {string} key The key of the value to merge.
     * @param {number} srcIndex The index of `source`.
     * @param {Function} mergeFunc The function to merge values.
     * @param {Function} [customizer] The function to customize assigned values.
     * @param {Object} [stack] Tracks traversed source values and their merged
     *  counterparts.
     */
    function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {
      var objValue = safeGet(object, key),
          srcValue = safeGet(source, key),
          stacked = stack.get(srcValue);

      if (stacked) {
        assignMergeValue(object, key, stacked);
        return;
      }
      var newValue = customizer
        ? customizer(objValue, srcValue, (key + ''), object, source, stack)
        : undefined;

      var isCommon = newValue === undefined;

      if (isCommon) {
        var isArr = isArray(srcValue),
            isBuff = !isArr && isBuffer(srcValue),
            isTyped = !isArr && !isBuff && isTypedArray(srcValue);

        newValue = srcValue;
        if (isArr || isBuff || isTyped) {
          if (isArray(objValue)) {
            newValue = objValue;
          }
          else if (isArrayLikeObject(objValue)) {
            newValue = copyArray(objValue);
          }
          else if (isBuff) {
            isCommon = false;
            newValue = cloneBuffer(srcValue, true);
          }
          else if (isTyped) {
            isCommon = false;
            newValue = cloneTypedArray(srcValue, true);
          }
          else {
            newValue = [];
          }
        }
        else if (isPlainObject(srcValue) || isArguments(srcValue)) {
          newValue = objValue;
          if (isArguments(objValue)) {
            newValue = toPlainObject(objValue);
          }
          else if (!isObject(objValue) || isFunction(objValue)) {
            newValue = initCloneObject(srcValue);
          }
        }
        else {
          isCommon = false;
        }
      }
      if (isCommon) {
        // Recursively merge objects and arrays (susceptible to call stack limits).
        stack.set(srcValue, newValue);
        mergeFunc(newValue, srcValue, srcIndex, customizer, stack);
        stack['delete'](srcValue);
      }
      assignMergeValue(object, key, newValue);
    }

    /**
     * The base implementation of `_.nth` which doesn't coerce arguments.
     *
     * @private
     * @param {Array} array The array to query.
     * @param {number} n The index of the element to return.
     * @returns {*} Returns the nth element of `array`.
     */
    function baseNth(array, n) {
      var length = array.length;
      if (!length) {
        return;
      }
      n += n < 0 ? length : 0;
      return isIndex(n, length) ? array[n] : undefined;
    }

    /**
     * The base implementation of `_.orderBy` without param guards.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.
     * @param {string[]} orders The sort orders of `iteratees`.
     * @returns {Array} Returns the new sorted array.
     */
    function baseOrderBy(collection, iteratees, orders) {
      var index = -1;
      iteratees = arrayMap(iteratees.length ? iteratees : [identity], baseUnary(getIteratee()));

      var result = baseMap(collection, function(value, key, collection) {
        var criteria = arrayMap(iteratees, function(iteratee) {
          return iteratee(value);
        });
        return { 'criteria': criteria, 'index': ++index, 'value': value };
      });

      return baseSortBy(result, function(object, other) {
        return compareMultiple(object, other, orders);
      });
    }

    /**
     * The base implementation of `_.pick` without support for individual
     * property identifiers.
     *
     * @private
     * @param {Object} object The source object.
     * @param {string[]} paths The property paths to pick.
     * @returns {Object} Returns the new object.
     */
    function basePick(object, paths) {
      return basePickBy(object, paths, function(value, path) {
        return hasIn(object, path);
      });
    }

    /**
     * The base implementation of  `_.pickBy` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The source object.
     * @param {string[]} paths The property paths to pick.
     * @param {Function} predicate The function invoked per property.
     * @returns {Object} Returns the new object.
     */
    function basePickBy(object, paths, predicate) {
      var index = -1,
          length = paths.length,
          result = {};

      while (++index < length) {
        var path = paths[index],
            value = baseGet(object, path);

        if (predicate(value, path)) {
          baseSet(result, castPath(path, object), value);
        }
      }
      return result;
    }

    /**
     * A specialized version of `baseProperty` which supports deep paths.
     *
     * @private
     * @param {Array|string} path The path of the property to get.
     * @returns {Function} Returns the new accessor function.
     */
    function basePropertyDeep(path) {
      return function(object) {
        return baseGet(object, path);
      };
    }

    /**
     * The base implementation of `_.pullAllBy` without support for iteratee
     * shorthands.
     *
     * @private
     * @param {Array} array The array to modify.
     * @param {Array} values The values to remove.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns `array`.
     */
    function basePullAll(array, values, iteratee, comparator) {
      var indexOf = comparator ? baseIndexOfWith : baseIndexOf,
          index = -1,
          length = values.length,
          seen = array;

      if (array === values) {
        values = copyArray(values);
      }
      if (iteratee) {
        seen = arrayMap(array, baseUnary(iteratee));
      }
      while (++index < length) {
        var fromIndex = 0,
            value = values[index],
            computed = iteratee ? iteratee(value) : value;

        while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {
          if (seen !== array) {
            splice.call(seen, fromIndex, 1);
          }
          splice.call(array, fromIndex, 1);
        }
      }
      return array;
    }

    /**
     * The base implementation of `_.pullAt` without support for individual
     * indexes or capturing the removed elements.
     *
     * @private
     * @param {Array} array The array to modify.
     * @param {number[]} indexes The indexes of elements to remove.
     * @returns {Array} Returns `array`.
     */
    function basePullAt(array, indexes) {
      var length = array ? indexes.length : 0,
          lastIndex = length - 1;

      while (length--) {
        var index = indexes[length];
        if (length == lastIndex || index !== previous) {
          var previous = index;
          if (isIndex(index)) {
            splice.call(array, index, 1);
          } else {
            baseUnset(array, index);
          }
        }
      }
      return array;
    }

    /**
     * The base implementation of `_.random` without support for returning
     * floating-point numbers.
     *
     * @private
     * @param {number} lower The lower bound.
     * @param {number} upper The upper bound.
     * @returns {number} Returns the random number.
     */
    function baseRandom(lower, upper) {
      return lower + nativeFloor(nativeRandom() * (upper - lower + 1));
    }

    /**
     * The base implementation of `_.range` and `_.rangeRight` which doesn't
     * coerce arguments.
     *
     * @private
     * @param {number} start The start of the range.
     * @param {number} end The end of the range.
     * @param {number} step The value to increment or decrement by.
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Array} Returns the range of numbers.
     */
    function baseRange(start, end, step, fromRight) {
      var index = -1,
          length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),
          result = Array(length);

      while (length--) {
        result[fromRight ? length : ++index] = start;
        start += step;
      }
      return result;
    }

    /**
     * The base implementation of `_.repeat` which doesn't coerce arguments.
     *
     * @private
     * @param {string} string The string to repeat.
     * @param {number} n The number of times to repeat the string.
     * @returns {string} Returns the repeated string.
     */
    function baseRepeat(string, n) {
      var result = '';
      if (!string || n < 1 || n > MAX_SAFE_INTEGER) {
        return result;
      }
      // Leverage the exponentiation by squaring algorithm for a faster repeat.
      // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.
      do {
        if (n % 2) {
          result += string;
        }
        n = nativeFloor(n / 2);
        if (n) {
          string += string;
        }
      } while (n);

      return result;
    }

    /**
     * The base implementation of `_.rest` which doesn't validate or coerce arguments.
     *
     * @private
     * @param {Function} func The function to apply a rest parameter to.
     * @param {number} [start=func.length-1] The start position of the rest parameter.
     * @returns {Function} Returns the new function.
     */
    function baseRest(func, start) {
      return setToString(overRest(func, start, identity), func + '');
    }

    /**
     * The base implementation of `_.sample`.
     *
     * @private
     * @param {Array|Object} collection The collection to sample.
     * @returns {*} Returns the random element.
     */
    function baseSample(collection) {
      return arraySample(values(collection));
    }

    /**
     * The base implementation of `_.sampleSize` without param guards.
     *
     * @private
     * @param {Array|Object} collection The collection to sample.
     * @param {number} n The number of elements to sample.
     * @returns {Array} Returns the random elements.
     */
    function baseSampleSize(collection, n) {
      var array = values(collection);
      return shuffleSelf(array, baseClamp(n, 0, array.length));
    }

    /**
     * The base implementation of `_.set`.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {*} value The value to set.
     * @param {Function} [customizer] The function to customize path creation.
     * @returns {Object} Returns `object`.
     */
    function baseSet(object, path, value, customizer) {
      if (!isObject(object)) {
        return object;
      }
      path = castPath(path, object);

      var index = -1,
          length = path.length,
          lastIndex = length - 1,
          nested = object;

      while (nested != null && ++index < length) {
        var key = toKey(path[index]),
            newValue = value;

        if (index != lastIndex) {
          var objValue = nested[key];
          newValue = customizer ? customizer(objValue, key, nested) : undefined;
          if (newValue === undefined) {
            newValue = isObject(objValue)
              ? objValue
              : (isIndex(path[index + 1]) ? [] : {});
          }
        }
        assignValue(nested, key, newValue);
        nested = nested[key];
      }
      return object;
    }

    /**
     * The base implementation of `setData` without support for hot loop shorting.
     *
     * @private
     * @param {Function} func The function to associate metadata with.
     * @param {*} data The metadata.
     * @returns {Function} Returns `func`.
     */
    var baseSetData = !metaMap ? identity : function(func, data) {
      metaMap.set(func, data);
      return func;
    };

    /**
     * The base implementation of `setToString` without support for hot loop shorting.
     *
     * @private
     * @param {Function} func The function to modify.
     * @param {Function} string The `toString` result.
     * @returns {Function} Returns `func`.
     */
    var baseSetToString = !defineProperty ? identity : function(func, string) {
      return defineProperty(func, 'toString', {
        'configurable': true,
        'enumerable': false,
        'value': constant(string),
        'writable': true
      });
    };

    /**
     * The base implementation of `_.shuffle`.
     *
     * @private
     * @param {Array|Object} collection The collection to shuffle.
     * @returns {Array} Returns the new shuffled array.
     */
    function baseShuffle(collection) {
      return shuffleSelf(values(collection));
    }

    /**
     * The base implementation of `_.slice` without an iteratee call guard.
     *
     * @private
     * @param {Array} array The array to slice.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns the slice of `array`.
     */
    function baseSlice(array, start, end) {
      var index = -1,
          length = array.length;

      if (start < 0) {
        start = -start > length ? 0 : (length + start);
      }
      end = end > length ? length : end;
      if (end < 0) {
        end += length;
      }
      length = start > end ? 0 : ((end - start) >>> 0);
      start >>>= 0;

      var result = Array(length);
      while (++index < length) {
        result[index] = array[index + start];
      }
      return result;
    }

    /**
     * The base implementation of `_.some` without support for iteratee shorthands.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {boolean} Returns `true` if any element passes the predicate check,
     *  else `false`.
     */
    function baseSome(collection, predicate) {
      var result;

      baseEach(collection, function(value, index, collection) {
        result = predicate(value, index, collection);
        return !result;
      });
      return !!result;
    }

    /**
     * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which
     * performs a binary search of `array` to determine the index at which `value`
     * should be inserted into `array` in order to maintain its sort order.
     *
     * @private
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {boolean} [retHighest] Specify returning the highest qualified index.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     */
    function baseSortedIndex(array, value, retHighest) {
      var low = 0,
          high = array == null ? low : array.length;

      if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {
        while (low < high) {
          var mid = (low + high) >>> 1,
              computed = array[mid];

          if (computed !== null && !isSymbol(computed) &&
              (retHighest ? (computed <= value) : (computed < value))) {
            low = mid + 1;
          } else {
            high = mid;
          }
        }
        return high;
      }
      return baseSortedIndexBy(array, value, identity, retHighest);
    }

    /**
     * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`
     * which invokes `iteratee` for `value` and each element of `array` to compute
     * their sort ranking. The iteratee is invoked with one argument; (value).
     *
     * @private
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {Function} iteratee The iteratee invoked per element.
     * @param {boolean} [retHighest] Specify returning the highest qualified index.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     */
    function baseSortedIndexBy(array, value, iteratee, retHighest) {
      value = iteratee(value);

      var low = 0,
          high = array == null ? 0 : array.length,
          valIsNaN = value !== value,
          valIsNull = value === null,
          valIsSymbol = isSymbol(value),
          valIsUndefined = value === undefined;

      while (low < high) {
        var mid = nativeFloor((low + high) / 2),
            computed = iteratee(array[mid]),
            othIsDefined = computed !== undefined,
            othIsNull = computed === null,
            othIsReflexive = computed === computed,
            othIsSymbol = isSymbol(computed);

        if (valIsNaN) {
          var setLow = retHighest || othIsReflexive;
        } else if (valIsUndefined) {
          setLow = othIsReflexive && (retHighest || othIsDefined);
        } else if (valIsNull) {
          setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);
        } else if (valIsSymbol) {
          setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);
        } else if (othIsNull || othIsSymbol) {
          setLow = false;
        } else {
          setLow = retHighest ? (computed <= value) : (computed < value);
        }
        if (setLow) {
          low = mid + 1;
        } else {
          high = mid;
        }
      }
      return nativeMin(high, MAX_ARRAY_INDEX);
    }

    /**
     * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without
     * support for iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     */
    function baseSortedUniq(array, iteratee) {
      var index = -1,
          length = array.length,
          resIndex = 0,
          result = [];

      while (++index < length) {
        var value = array[index],
            computed = iteratee ? iteratee(value) : value;

        if (!index || !eq(computed, seen)) {
          var seen = computed;
          result[resIndex++] = value === 0 ? 0 : value;
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.toNumber` which doesn't ensure correct
     * conversions of binary, hexadecimal, or octal string values.
     *
     * @private
     * @param {*} value The value to process.
     * @returns {number} Returns the number.
     */
    function baseToNumber(value) {
      if (typeof value == 'number') {
        return value;
      }
      if (isSymbol(value)) {
        return NAN;
      }
      return +value;
    }

    /**
     * The base implementation of `_.toString` which doesn't convert nullish
     * values to empty strings.
     *
     * @private
     * @param {*} value The value to process.
     * @returns {string} Returns the string.
     */
    function baseToString(value) {
      // Exit early for strings to avoid a performance hit in some environments.
      if (typeof value == 'string') {
        return value;
      }
      if (isArray(value)) {
        // Recursively convert values (susceptible to call stack limits).
        return arrayMap(value, baseToString) + '';
      }
      if (isSymbol(value)) {
        return symbolToString ? symbolToString.call(value) : '';
      }
      var result = (value + '');
      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
    }

    /**
     * The base implementation of `_.uniqBy` without support for iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     */
    function baseUniq(array, iteratee, comparator) {
      var index = -1,
          includes = arrayIncludes,
          length = array.length,
          isCommon = true,
          result = [],
          seen = result;

      if (comparator) {
        isCommon = false;
        includes = arrayIncludesWith;
      }
      else if (length >= LARGE_ARRAY_SIZE) {
        var set = iteratee ? null : createSet(array);
        if (set) {
          return setToArray(set);
        }
        isCommon = false;
        includes = cacheHas;
        seen = new SetCache;
      }
      else {
        seen = iteratee ? [] : result;
      }
      outer:
      while (++index < length) {
        var value = array[index],
            computed = iteratee ? iteratee(value) : value;

        value = (comparator || value !== 0) ? value : 0;
        if (isCommon && computed === computed) {
          var seenIndex = seen.length;
          while (seenIndex--) {
            if (seen[seenIndex] === computed) {
              continue outer;
            }
          }
          if (iteratee) {
            seen.push(computed);
          }
          result.push(value);
        }
        else if (!includes(seen, computed, comparator)) {
          if (seen !== result) {
            seen.push(computed);
          }
          result.push(value);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.unset`.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {Array|string} path The property path to unset.
     * @returns {boolean} Returns `true` if the property is deleted, else `false`.
     */
    function baseUnset(object, path) {
      path = castPath(path, object);
      object = parent(object, path);
      return object == null || delete object[toKey(last(path))];
    }

    /**
     * The base implementation of `_.update`.
     *
     * @private
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to update.
     * @param {Function} updater The function to produce the updated value.
     * @param {Function} [customizer] The function to customize path creation.
     * @returns {Object} Returns `object`.
     */
    function baseUpdate(object, path, updater, customizer) {
      return baseSet(object, path, updater(baseGet(object, path)), customizer);
    }

    /**
     * The base implementation of methods like `_.dropWhile` and `_.takeWhile`
     * without support for iteratee shorthands.
     *
     * @private
     * @param {Array} array The array to query.
     * @param {Function} predicate The function invoked per iteration.
     * @param {boolean} [isDrop] Specify dropping elements instead of taking them.
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Array} Returns the slice of `array`.
     */
    function baseWhile(array, predicate, isDrop, fromRight) {
      var length = array.length,
          index = fromRight ? length : -1;

      while ((fromRight ? index-- : ++index < length) &&
        predicate(array[index], index, array)) {}

      return isDrop
        ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))
        : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));
    }

    /**
     * The base implementation of `wrapperValue` which returns the result of
     * performing a sequence of actions on the unwrapped `value`, where each
     * successive action is supplied the return value of the previous.
     *
     * @private
     * @param {*} value The unwrapped value.
     * @param {Array} actions Actions to perform to resolve the unwrapped value.
     * @returns {*} Returns the resolved value.
     */
    function baseWrapperValue(value, actions) {
      var result = value;
      if (result instanceof LazyWrapper) {
        result = result.value();
      }
      return arrayReduce(actions, function(result, action) {
        return action.func.apply(action.thisArg, arrayPush([result], action.args));
      }, result);
    }

    /**
     * The base implementation of methods like `_.xor`, without support for
     * iteratee shorthands, that accepts an array of arrays to inspect.
     *
     * @private
     * @param {Array} arrays The arrays to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of values.
     */
    function baseXor(arrays, iteratee, comparator) {
      var length = arrays.length;
      if (length < 2) {
        return length ? baseUniq(arrays[0]) : [];
      }
      var index = -1,
          result = Array(length);

      while (++index < length) {
        var array = arrays[index],
            othIndex = -1;

        while (++othIndex < length) {
          if (othIndex != index) {
            result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);
          }
        }
      }
      return baseUniq(baseFlatten(result, 1), iteratee, comparator);
    }

    /**
     * This base implementation of `_.zipObject` which assigns values using `assignFunc`.
     *
     * @private
     * @param {Array} props The property identifiers.
     * @param {Array} values The property values.
     * @param {Function} assignFunc The function to assign values.
     * @returns {Object} Returns the new object.
     */
    function baseZipObject(props, values, assignFunc) {
      var index = -1,
          length = props.length,
          valsLength = values.length,
          result = {};

      while (++index < length) {
        var value = index < valsLength ? values[index] : undefined;
        assignFunc(result, props[index], value);
      }
      return result;
    }

    /**
     * Casts `value` to an empty array if it's not an array like object.
     *
     * @private
     * @param {*} value The value to inspect.
     * @returns {Array|Object} Returns the cast array-like object.
     */
    function castArrayLikeObject(value) {
      return isArrayLikeObject(value) ? value : [];
    }

    /**
     * Casts `value` to `identity` if it's not a function.
     *
     * @private
     * @param {*} value The value to inspect.
     * @returns {Function} Returns cast function.
     */
    function castFunction(value) {
      return typeof value == 'function' ? value : identity;
    }

    /**
     * Casts `value` to a path array if it's not one.
     *
     * @private
     * @param {*} value The value to inspect.
     * @param {Object} [object] The object to query keys on.
     * @returns {Array} Returns the cast property path array.
     */
    function castPath(value, object) {
      if (isArray(value)) {
        return value;
      }
      return isKey(value, object) ? [value] : stringToPath(toString(value));
    }

    /**
     * A `baseRest` alias which can be replaced with `identity` by module
     * replacement plugins.
     *
     * @private
     * @type {Function}
     * @param {Function} func The function to apply a rest parameter to.
     * @returns {Function} Returns the new function.
     */
    var castRest = baseRest;

    /**
     * Casts `array` to a slice if it's needed.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {number} start The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns the cast slice.
     */
    function castSlice(array, start, end) {
      var length = array.length;
      end = end === undefined ? length : end;
      return (!start && end >= length) ? array : baseSlice(array, start, end);
    }

    /**
     * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).
     *
     * @private
     * @param {number|Object} id The timer id or timeout object of the timer to clear.
     */
    var clearTimeout = ctxClearTimeout || function(id) {
      return root.clearTimeout(id);
    };

    /**
     * Creates a clone of  `buffer`.
     *
     * @private
     * @param {Buffer} buffer The buffer to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Buffer} Returns the cloned buffer.
     */
    function cloneBuffer(buffer, isDeep) {
      if (isDeep) {
        return buffer.slice();
      }
      var length = buffer.length,
          result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);

      buffer.copy(result);
      return result;
    }

    /**
     * Creates a clone of `arrayBuffer`.
     *
     * @private
     * @param {ArrayBuffer} arrayBuffer The array buffer to clone.
     * @returns {ArrayBuffer} Returns the cloned array buffer.
     */
    function cloneArrayBuffer(arrayBuffer) {
      var result = new arrayBuffer.constructor(arrayBuffer.byteLength);
      new Uint8Array(result).set(new Uint8Array(arrayBuffer));
      return result;
    }

    /**
     * Creates a clone of `dataView`.
     *
     * @private
     * @param {Object} dataView The data view to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Object} Returns the cloned data view.
     */
    function cloneDataView(dataView, isDeep) {
      var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;
      return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);
    }

    /**
     * Creates a clone of `regexp`.
     *
     * @private
     * @param {Object} regexp The regexp to clone.
     * @returns {Object} Returns the cloned regexp.
     */
    function cloneRegExp(regexp) {
      var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));
      result.lastIndex = regexp.lastIndex;
      return result;
    }

    /**
     * Creates a clone of the `symbol` object.
     *
     * @private
     * @param {Object} symbol The symbol object to clone.
     * @returns {Object} Returns the cloned symbol object.
     */
    function cloneSymbol(symbol) {
      return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};
    }

    /**
     * Creates a clone of `typedArray`.
     *
     * @private
     * @param {Object} typedArray The typed array to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Object} Returns the cloned typed array.
     */
    function cloneTypedArray(typedArray, isDeep) {
      var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;
      return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);
    }

    /**
     * Compares values to sort them in ascending order.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {number} Returns the sort order indicator for `value`.
     */
    function compareAscending(value, other) {
      if (value !== other) {
        var valIsDefined = value !== undefined,
            valIsNull = value === null,
            valIsReflexive = value === value,
            valIsSymbol = isSymbol(value);

        var othIsDefined = other !== undefined,
            othIsNull = other === null,
            othIsReflexive = other === other,
            othIsSymbol = isSymbol(other);

        if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||
            (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||
            (valIsNull && othIsDefined && othIsReflexive) ||
            (!valIsDefined && othIsReflexive) ||
            !valIsReflexive) {
          return 1;
        }
        if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||
            (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||
            (othIsNull && valIsDefined && valIsReflexive) ||
            (!othIsDefined && valIsReflexive) ||
            !othIsReflexive) {
          return -1;
        }
      }
      return 0;
    }

    /**
     * Used by `_.orderBy` to compare multiple properties of a value to another
     * and stable sort them.
     *
     * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,
     * specify an order of "desc" for descending or "asc" for ascending sort order
     * of corresponding values.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {boolean[]|string[]} orders The order to sort by for each property.
     * @returns {number} Returns the sort order indicator for `object`.
     */
    function compareMultiple(object, other, orders) {
      var index = -1,
          objCriteria = object.criteria,
          othCriteria = other.criteria,
          length = objCriteria.length,
          ordersLength = orders.length;

      while (++index < length) {
        var result = compareAscending(objCriteria[index], othCriteria[index]);
        if (result) {
          if (index >= ordersLength) {
            return result;
          }
          var order = orders[index];
          return result * (order == 'desc' ? -1 : 1);
        }
      }
      // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
      // that causes it, under certain circumstances, to provide the same value for
      // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247
      // for more details.
      //
      // This also ensures a stable sort in V8 and other engines.
      // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.
      return object.index - other.index;
    }

    /**
     * Creates an array that is the composition of partially applied arguments,
     * placeholders, and provided arguments into a single array of arguments.
     *
     * @private
     * @param {Array} args The provided arguments.
     * @param {Array} partials The arguments to prepend to those provided.
     * @param {Array} holders The `partials` placeholder indexes.
     * @params {boolean} [isCurried] Specify composing for a curried function.
     * @returns {Array} Returns the new array of composed arguments.
     */
    function composeArgs(args, partials, holders, isCurried) {
      var argsIndex = -1,
          argsLength = args.length,
          holdersLength = holders.length,
          leftIndex = -1,
          leftLength = partials.length,
          rangeLength = nativeMax(argsLength - holdersLength, 0),
          result = Array(leftLength + rangeLength),
          isUncurried = !isCurried;

      while (++leftIndex < leftLength) {
        result[leftIndex] = partials[leftIndex];
      }
      while (++argsIndex < holdersLength) {
        if (isUncurried || argsIndex < argsLength) {
          result[holders[argsIndex]] = args[argsIndex];
        }
      }
      while (rangeLength--) {
        result[leftIndex++] = args[argsIndex++];
      }
      return result;
    }

    /**
     * This function is like `composeArgs` except that the arguments composition
     * is tailored for `_.partialRight`.
     *
     * @private
     * @param {Array} args The provided arguments.
     * @param {Array} partials The arguments to append to those provided.
     * @param {Array} holders The `partials` placeholder indexes.
     * @params {boolean} [isCurried] Specify composing for a curried function.
     * @returns {Array} Returns the new array of composed arguments.
     */
    function composeArgsRight(args, partials, holders, isCurried) {
      var argsIndex = -1,
          argsLength = args.length,
          holdersIndex = -1,
          holdersLength = holders.length,
          rightIndex = -1,
          rightLength = partials.length,
          rangeLength = nativeMax(argsLength - holdersLength, 0),
          result = Array(rangeLength + rightLength),
          isUncurried = !isCurried;

      while (++argsIndex < rangeLength) {
        result[argsIndex] = args[argsIndex];
      }
      var offset = argsIndex;
      while (++rightIndex < rightLength) {
        result[offset + rightIndex] = partials[rightIndex];
      }
      while (++holdersIndex < holdersLength) {
        if (isUncurried || argsIndex < argsLength) {
          result[offset + holders[holdersIndex]] = args[argsIndex++];
        }
      }
      return result;
    }

    /**
     * Copies the values of `source` to `array`.
     *
     * @private
     * @param {Array} source The array to copy values from.
     * @param {Array} [array=[]] The array to copy values to.
     * @returns {Array} Returns `array`.
     */
    function copyArray(source, array) {
      var index = -1,
          length = source.length;

      array || (array = Array(length));
      while (++index < length) {
        array[index] = source[index];
      }
      return array;
    }

    /**
     * Copies properties of `source` to `object`.
     *
     * @private
     * @param {Object} source The object to copy properties from.
     * @param {Array} props The property identifiers to copy.
     * @param {Object} [object={}] The object to copy properties to.
     * @param {Function} [customizer] The function to customize copied values.
     * @returns {Object} Returns `object`.
     */
    function copyObject(source, props, object, customizer) {
      var isNew = !object;
      object || (object = {});

      var index = -1,
          length = props.length;

      while (++index < length) {
        var key = props[index];

        var newValue = customizer
          ? customizer(object[key], source[key], key, object, source)
          : undefined;

        if (newValue === undefined) {
          newValue = source[key];
        }
        if (isNew) {
          baseAssignValue(object, key, newValue);
        } else {
          assignValue(object, key, newValue);
        }
      }
      return object;
    }

    /**
     * Copies own symbols of `source` to `object`.
     *
     * @private
     * @param {Object} source The object to copy symbols from.
     * @param {Object} [object={}] The object to copy symbols to.
     * @returns {Object} Returns `object`.
     */
    function copySymbols(source, object) {
      return copyObject(source, getSymbols(source), object);
    }

    /**
     * Copies own and inherited symbols of `source` to `object`.
     *
     * @private
     * @param {Object} source The object to copy symbols from.
     * @param {Object} [object={}] The object to copy symbols to.
     * @returns {Object} Returns `object`.
     */
    function copySymbolsIn(source, object) {
      return copyObject(source, getSymbolsIn(source), object);
    }

    /**
     * Creates a function like `_.groupBy`.
     *
     * @private
     * @param {Function} setter The function to set accumulator values.
     * @param {Function} [initializer] The accumulator object initializer.
     * @returns {Function} Returns the new aggregator function.
     */
    function createAggregator(setter, initializer) {
      return function(collection, iteratee) {
        var func = isArray(collection) ? arrayAggregator : baseAggregator,
            accumulator = initializer ? initializer() : {};

        return func(collection, setter, getIteratee(iteratee, 2), accumulator);
      };
    }

    /**
     * Creates a function like `_.assign`.
     *
     * @private
     * @param {Function} assigner The function to assign values.
     * @returns {Function} Returns the new assigner function.
     */
    function createAssigner(assigner) {
      return baseRest(function(object, sources) {
        var index = -1,
            length = sources.length,
            customizer = length > 1 ? sources[length - 1] : undefined,
            guard = length > 2 ? sources[2] : undefined;

        customizer = (assigner.length > 3 && typeof customizer == 'function')
          ? (length--, customizer)
          : undefined;

        if (guard && isIterateeCall(sources[0], sources[1], guard)) {
          customizer = length < 3 ? undefined : customizer;
          length = 1;
        }
        object = Object(object);
        while (++index < length) {
          var source = sources[index];
          if (source) {
            assigner(object, source, index, customizer);
          }
        }
        return object;
      });
    }

    /**
     * Creates a `baseEach` or `baseEachRight` function.
     *
     * @private
     * @param {Function} eachFunc The function to iterate over a collection.
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new base function.
     */
    function createBaseEach(eachFunc, fromRight) {
      return function(collection, iteratee) {
        if (collection == null) {
          return collection;
        }
        if (!isArrayLike(collection)) {
          return eachFunc(collection, iteratee);
        }
        var length = collection.length,
            index = fromRight ? length : -1,
            iterable = Object(collection);

        while ((fromRight ? index-- : ++index < length)) {
          if (iteratee(iterable[index], index, iterable) === false) {
            break;
          }
        }
        return collection;
      };
    }

    /**
     * Creates a base function for methods like `_.forIn` and `_.forOwn`.
     *
     * @private
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new base function.
     */
    function createBaseFor(fromRight) {
      return function(object, iteratee, keysFunc) {
        var index = -1,
            iterable = Object(object),
            props = keysFunc(object),
            length = props.length;

        while (length--) {
          var key = props[fromRight ? length : ++index];
          if (iteratee(iterable[key], key, iterable) === false) {
            break;
          }
        }
        return object;
      };
    }

    /**
     * Creates a function that wraps `func` to invoke it with the optional `this`
     * binding of `thisArg`.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createBind(func, bitmask, thisArg) {
      var isBind = bitmask & WRAP_BIND_FLAG,
          Ctor = createCtor(func);

      function wrapper() {
        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
        return fn.apply(isBind ? thisArg : this, arguments);
      }
      return wrapper;
    }

    /**
     * Creates a function like `_.lowerFirst`.
     *
     * @private
     * @param {string} methodName The name of the `String` case method to use.
     * @returns {Function} Returns the new case function.
     */
    function createCaseFirst(methodName) {
      return function(string) {
        string = toString(string);

        var strSymbols = hasUnicode(string)
          ? stringToArray(string)
          : undefined;

        var chr = strSymbols
          ? strSymbols[0]
          : string.charAt(0);

        var trailing = strSymbols
          ? castSlice(strSymbols, 1).join('')
          : string.slice(1);

        return chr[methodName]() + trailing;
      };
    }

    /**
     * Creates a function like `_.camelCase`.
     *
     * @private
     * @param {Function} callback The function to combine each word.
     * @returns {Function} Returns the new compounder function.
     */
    function createCompounder(callback) {
      return function(string) {
        return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');
      };
    }

    /**
     * Creates a function that produces an instance of `Ctor` regardless of
     * whether it was invoked as part of a `new` expression or by `call` or `apply`.
     *
     * @private
     * @param {Function} Ctor The constructor to wrap.
     * @returns {Function} Returns the new wrapped function.
     */
    function createCtor(Ctor) {
      return function() {
        // Use a `switch` statement to work with class constructors. See
        // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist
        // for more details.
        var args = arguments;
        switch (args.length) {
          case 0: return new Ctor;
          case 1: return new Ctor(args[0]);
          case 2: return new Ctor(args[0], args[1]);
          case 3: return new Ctor(args[0], args[1], args[2]);
          case 4: return new Ctor(args[0], args[1], args[2], args[3]);
          case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);
          case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);
          case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
        }
        var thisBinding = baseCreate(Ctor.prototype),
            result = Ctor.apply(thisBinding, args);

        // Mimic the constructor's `return` behavior.
        // See https://es5.github.io/#x13.2.2 for more details.
        return isObject(result) ? result : thisBinding;
      };
    }

    /**
     * Creates a function that wraps `func` to enable currying.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {number} arity The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createCurry(func, bitmask, arity) {
      var Ctor = createCtor(func);

      function wrapper() {
        var length = arguments.length,
            args = Array(length),
            index = length,
            placeholder = getHolder(wrapper);

        while (index--) {
          args[index] = arguments[index];
        }
        var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)
          ? []
          : replaceHolders(args, placeholder);

        length -= holders.length;
        if (length < arity) {
          return createRecurry(
            func, bitmask, createHybrid, wrapper.placeholder, undefined,
            args, holders, undefined, undefined, arity - length);
        }
        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
        return apply(fn, this, args);
      }
      return wrapper;
    }

    /**
     * Creates a `_.find` or `_.findLast` function.
     *
     * @private
     * @param {Function} findIndexFunc The function to find the collection index.
     * @returns {Function} Returns the new find function.
     */
    function createFind(findIndexFunc) {
      return function(collection, predicate, fromIndex) {
        var iterable = Object(collection);
        if (!isArrayLike(collection)) {
          var iteratee = getIteratee(predicate, 3);
          collection = keys(collection);
          predicate = function(key) { return iteratee(iterable[key], key, iterable); };
        }
        var index = findIndexFunc(collection, predicate, fromIndex);
        return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;
      };
    }

    /**
     * Creates a `_.flow` or `_.flowRight` function.
     *
     * @private
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new flow function.
     */
    function createFlow(fromRight) {
      return flatRest(function(funcs) {
        var length = funcs.length,
            index = length,
            prereq = LodashWrapper.prototype.thru;

        if (fromRight) {
          funcs.reverse();
        }
        while (index--) {
          var func = funcs[index];
          if (typeof func != 'function') {
            throw new TypeError(FUNC_ERROR_TEXT);
          }
          if (prereq && !wrapper && getFuncName(func) == 'wrapper') {
            var wrapper = new LodashWrapper([], true);
          }
        }
        index = wrapper ? index : length;
        while (++index < length) {
          func = funcs[index];

          var funcName = getFuncName(func),
              data = funcName == 'wrapper' ? getData(func) : undefined;

          if (data && isLaziable(data[0]) &&
                data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&
                !data[4].length && data[9] == 1
              ) {
            wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);
          } else {
            wrapper = (func.length == 1 && isLaziable(func))
              ? wrapper[funcName]()
              : wrapper.thru(func);
          }
        }
        return function() {
          var args = arguments,
              value = args[0];

          if (wrapper && args.length == 1 && isArray(value)) {
            return wrapper.plant(value).value();
          }
          var index = 0,
              result = length ? funcs[index].apply(this, args) : value;

          while (++index < length) {
            result = funcs[index].call(this, result);
          }
          return result;
        };
      });
    }

    /**
     * Creates a function that wraps `func` to invoke it with optional `this`
     * binding of `thisArg`, partial application, and currying.
     *
     * @private
     * @param {Function|string} func The function or method name to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {Array} [partials] The arguments to prepend to those provided to
     *  the new function.
     * @param {Array} [holders] The `partials` placeholder indexes.
     * @param {Array} [partialsRight] The arguments to append to those provided
     *  to the new function.
     * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.
     * @param {Array} [argPos] The argument positions of the new function.
     * @param {number} [ary] The arity cap of `func`.
     * @param {number} [arity] The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {
      var isAry = bitmask & WRAP_ARY_FLAG,
          isBind = bitmask & WRAP_BIND_FLAG,
          isBindKey = bitmask & WRAP_BIND_KEY_FLAG,
          isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),
          isFlip = bitmask & WRAP_FLIP_FLAG,
          Ctor = isBindKey ? undefined : createCtor(func);

      function wrapper() {
        var length = arguments.length,
            args = Array(length),
            index = length;

        while (index--) {
          args[index] = arguments[index];
        }
        if (isCurried) {
          var placeholder = getHolder(wrapper),
              holdersCount = countHolders(args, placeholder);
        }
        if (partials) {
          args = composeArgs(args, partials, holders, isCurried);
        }
        if (partialsRight) {
          args = composeArgsRight(args, partialsRight, holdersRight, isCurried);
        }
        length -= holdersCount;
        if (isCurried && length < arity) {
          var newHolders = replaceHolders(args, placeholder);
          return createRecurry(
            func, bitmask, createHybrid, wrapper.placeholder, thisArg,
            args, newHolders, argPos, ary, arity - length
          );
        }
        var thisBinding = isBind ? thisArg : this,
            fn = isBindKey ? thisBinding[func] : func;

        length = args.length;
        if (argPos) {
          args = reorder(args, argPos);
        } else if (isFlip && length > 1) {
          args.reverse();
        }
        if (isAry && ary < length) {
          args.length = ary;
        }
        if (this && this !== root && this instanceof wrapper) {
          fn = Ctor || createCtor(fn);
        }
        return fn.apply(thisBinding, args);
      }
      return wrapper;
    }

    /**
     * Creates a function like `_.invertBy`.
     *
     * @private
     * @param {Function} setter The function to set accumulator values.
     * @param {Function} toIteratee The function to resolve iteratees.
     * @returns {Function} Returns the new inverter function.
     */
    function createInverter(setter, toIteratee) {
      return function(object, iteratee) {
        return baseInverter(object, setter, toIteratee(iteratee), {});
      };
    }

    /**
     * Creates a function that performs a mathematical operation on two values.
     *
     * @private
     * @param {Function} operator The function to perform the operation.
     * @param {number} [defaultValue] The value used for `undefined` arguments.
     * @returns {Function} Returns the new mathematical operation function.
     */
    function createMathOperation(operator, defaultValue) {
      return function(value, other) {
        var result;
        if (value === undefined && other === undefined) {
          return defaultValue;
        }
        if (value !== undefined) {
          result = value;
        }
        if (other !== undefined) {
          if (result === undefined) {
            return other;
          }
          if (typeof value == 'string' || typeof other == 'string') {
            value = baseToString(value);
            other = baseToString(other);
          } else {
            value = baseToNumber(value);
            other = baseToNumber(other);
          }
          result = operator(value, other);
        }
        return result;
      };
    }

    /**
     * Creates a function like `_.over`.
     *
     * @private
     * @param {Function} arrayFunc The function to iterate over iteratees.
     * @returns {Function} Returns the new over function.
     */
    function createOver(arrayFunc) {
      return flatRest(function(iteratees) {
        iteratees = arrayMap(iteratees, baseUnary(getIteratee()));
        return baseRest(function(args) {
          var thisArg = this;
          return arrayFunc(iteratees, function(iteratee) {
            return apply(iteratee, thisArg, args);
          });
        });
      });
    }

    /**
     * Creates the padding for `string` based on `length`. The `chars` string
     * is truncated if the number of characters exceeds `length`.
     *
     * @private
     * @param {number} length The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padding for `string`.
     */
    function createPadding(length, chars) {
      chars = chars === undefined ? ' ' : baseToString(chars);

      var charsLength = chars.length;
      if (charsLength < 2) {
        return charsLength ? baseRepeat(chars, length) : chars;
      }
      var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));
      return hasUnicode(chars)
        ? castSlice(stringToArray(result), 0, length).join('')
        : result.slice(0, length);
    }

    /**
     * Creates a function that wraps `func` to invoke it with the `this` binding
     * of `thisArg` and `partials` prepended to the arguments it receives.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {*} thisArg The `this` binding of `func`.
     * @param {Array} partials The arguments to prepend to those provided to
     *  the new function.
     * @returns {Function} Returns the new wrapped function.
     */
    function createPartial(func, bitmask, thisArg, partials) {
      var isBind = bitmask & WRAP_BIND_FLAG,
          Ctor = createCtor(func);

      function wrapper() {
        var argsIndex = -1,
            argsLength = arguments.length,
            leftIndex = -1,
            leftLength = partials.length,
            args = Array(leftLength + argsLength),
            fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;

        while (++leftIndex < leftLength) {
          args[leftIndex] = partials[leftIndex];
        }
        while (argsLength--) {
          args[leftIndex++] = arguments[++argsIndex];
        }
        return apply(fn, isBind ? thisArg : this, args);
      }
      return wrapper;
    }

    /**
     * Creates a `_.range` or `_.rangeRight` function.
     *
     * @private
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new range function.
     */
    function createRange(fromRight) {
      return function(start, end, step) {
        if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {
          end = step = undefined;
        }
        // Ensure the sign of `-0` is preserved.
        start = toFinite(start);
        if (end === undefined) {
          end = start;
          start = 0;
        } else {
          end = toFinite(end);
        }
        step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);
        return baseRange(start, end, step, fromRight);
      };
    }

    /**
     * Creates a function that performs a relational operation on two values.
     *
     * @private
     * @param {Function} operator The function to perform the operation.
     * @returns {Function} Returns the new relational operation function.
     */
    function createRelationalOperation(operator) {
      return function(value, other) {
        if (!(typeof value == 'string' && typeof other == 'string')) {
          value = toNumber(value);
          other = toNumber(other);
        }
        return operator(value, other);
      };
    }

    /**
     * Creates a function that wraps `func` to continue currying.
     *
     * @private
     * @param {Function} func The function to wrap.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @param {Function} wrapFunc The function to create the `func` wrapper.
     * @param {*} placeholder The placeholder value.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {Array} [partials] The arguments to prepend to those provided to
     *  the new function.
     * @param {Array} [holders] The `partials` placeholder indexes.
     * @param {Array} [argPos] The argument positions of the new function.
     * @param {number} [ary] The arity cap of `func`.
     * @param {number} [arity] The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {
      var isCurry = bitmask & WRAP_CURRY_FLAG,
          newHolders = isCurry ? holders : undefined,
          newHoldersRight = isCurry ? undefined : holders,
          newPartials = isCurry ? partials : undefined,
          newPartialsRight = isCurry ? undefined : partials;

      bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);
      bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);

      if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {
        bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);
      }
      var newData = [
        func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,
        newHoldersRight, argPos, ary, arity
      ];

      var result = wrapFunc.apply(undefined, newData);
      if (isLaziable(func)) {
        setData(result, newData);
      }
      result.placeholder = placeholder;
      return setWrapToString(result, func, bitmask);
    }

    /**
     * Creates a function like `_.round`.
     *
     * @private
     * @param {string} methodName The name of the `Math` method to use when rounding.
     * @returns {Function} Returns the new round function.
     */
    function createRound(methodName) {
      var func = Math[methodName];
      return function(number, precision) {
        number = toNumber(number);
        precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);
        if (precision && nativeIsFinite(number)) {
          // Shift with exponential notation to avoid floating-point issues.
          // See [MDN](https://mdn.io/round#Examples) for more details.
          var pair = (toString(number) + 'e').split('e'),
              value = func(pair[0] + 'e' + (+pair[1] + precision));

          pair = (toString(value) + 'e').split('e');
          return +(pair[0] + 'e' + (+pair[1] - precision));
        }
        return func(number);
      };
    }

    /**
     * Creates a set object of `values`.
     *
     * @private
     * @param {Array} values The values to add to the set.
     * @returns {Object} Returns the new set.
     */
    var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {
      return new Set(values);
    };

    /**
     * Creates a `_.toPairs` or `_.toPairsIn` function.
     *
     * @private
     * @param {Function} keysFunc The function to get the keys of a given object.
     * @returns {Function} Returns the new pairs function.
     */
    function createToPairs(keysFunc) {
      return function(object) {
        var tag = getTag(object);
        if (tag == mapTag) {
          return mapToArray(object);
        }
        if (tag == setTag) {
          return setToPairs(object);
        }
        return baseToPairs(object, keysFunc(object));
      };
    }

    /**
     * Creates a function that either curries or invokes `func` with optional
     * `this` binding and partially applied arguments.
     *
     * @private
     * @param {Function|string} func The function or method name to wrap.
     * @param {number} bitmask The bitmask flags.
     *    1 - `_.bind`
     *    2 - `_.bindKey`
     *    4 - `_.curry` or `_.curryRight` of a bound function
     *    8 - `_.curry`
     *   16 - `_.curryRight`
     *   32 - `_.partial`
     *   64 - `_.partialRight`
     *  128 - `_.rearg`
     *  256 - `_.ary`
     *  512 - `_.flip`
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {Array} [partials] The arguments to be partially applied.
     * @param {Array} [holders] The `partials` placeholder indexes.
     * @param {Array} [argPos] The argument positions of the new function.
     * @param {number} [ary] The arity cap of `func`.
     * @param {number} [arity] The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
      var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;
      if (!isBindKey && typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      var length = partials ? partials.length : 0;
      if (!length) {
        bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);
        partials = holders = undefined;
      }
      ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);
      arity = arity === undefined ? arity : toInteger(arity);
      length -= holders ? holders.length : 0;

      if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {
        var partialsRight = partials,
            holdersRight = holders;

        partials = holders = undefined;
      }
      var data = isBindKey ? undefined : getData(func);

      var newData = [
        func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,
        argPos, ary, arity
      ];

      if (data) {
        mergeData(newData, data);
      }
      func = newData[0];
      bitmask = newData[1];
      thisArg = newData[2];
      partials = newData[3];
      holders = newData[4];
      arity = newData[9] = newData[9] === undefined
        ? (isBindKey ? 0 : func.length)
        : nativeMax(newData[9] - length, 0);

      if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {
        bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);
      }
      if (!bitmask || bitmask == WRAP_BIND_FLAG) {
        var result = createBind(func, bitmask, thisArg);
      } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {
        result = createCurry(func, bitmask, arity);
      } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {
        result = createPartial(func, bitmask, thisArg, partials);
      } else {
        result = createHybrid.apply(undefined, newData);
      }
      var setter = data ? baseSetData : setData;
      return setWrapToString(setter(result, newData), func, bitmask);
    }

    /**
     * Used by `_.defaults` to customize its `_.assignIn` use to assign properties
     * of source objects to the destination object for all destination properties
     * that resolve to `undefined`.
     *
     * @private
     * @param {*} objValue The destination value.
     * @param {*} srcValue The source value.
     * @param {string} key The key of the property to assign.
     * @param {Object} object The parent object of `objValue`.
     * @returns {*} Returns the value to assign.
     */
    function customDefaultsAssignIn(objValue, srcValue, key, object) {
      if (objValue === undefined ||
          (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {
        return srcValue;
      }
      return objValue;
    }

    /**
     * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source
     * objects into destination objects that are passed thru.
     *
     * @private
     * @param {*} objValue The destination value.
     * @param {*} srcValue The source value.
     * @param {string} key The key of the property to merge.
     * @param {Object} object The parent object of `objValue`.
     * @param {Object} source The parent object of `srcValue`.
     * @param {Object} [stack] Tracks traversed source values and their merged
     *  counterparts.
     * @returns {*} Returns the value to assign.
     */
    function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {
      if (isObject(objValue) && isObject(srcValue)) {
        // Recursively merge objects and arrays (susceptible to call stack limits).
        stack.set(srcValue, objValue);
        baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);
        stack['delete'](srcValue);
      }
      return objValue;
    }

    /**
     * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain
     * objects.
     *
     * @private
     * @param {*} value The value to inspect.
     * @param {string} key The key of the property to inspect.
     * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.
     */
    function customOmitClone(value) {
      return isPlainObject(value) ? undefined : value;
    }

    /**
     * A specialized version of `baseIsEqualDeep` for arrays with support for
     * partial deep comparisons.
     *
     * @private
     * @param {Array} array The array to compare.
     * @param {Array} other The other array to compare.
     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
     * @param {Function} customizer The function to customize comparisons.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Object} stack Tracks traversed `array` and `other` objects.
     * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
     */
    function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
          arrLength = array.length,
          othLength = other.length;

      if (arrLength != othLength && !(isPartial && othLength > arrLength)) {
        return false;
      }
      // Assume cyclic values are equal.
      var stacked = stack.get(array);
      if (stacked && stack.get(other)) {
        return stacked == other;
      }
      var index = -1,
          result = true,
          seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;

      stack.set(array, other);
      stack.set(other, array);

      // Ignore non-index properties.
      while (++index < arrLength) {
        var arrValue = array[index],
            othValue = other[index];

        if (customizer) {
          var compared = isPartial
            ? customizer(othValue, arrValue, index, other, array, stack)
            : customizer(arrValue, othValue, index, array, other, stack);
        }
        if (compared !== undefined) {
          if (compared) {
            continue;
          }
          result = false;
          break;
        }
        // Recursively compare arrays (susceptible to call stack limits).
        if (seen) {
          if (!arraySome(other, function(othValue, othIndex) {
                if (!cacheHas(seen, othIndex) &&
                    (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
                  return seen.push(othIndex);
                }
              })) {
            result = false;
            break;
          }
        } else if (!(
              arrValue === othValue ||
                equalFunc(arrValue, othValue, bitmask, customizer, stack)
            )) {
          result = false;
          break;
        }
      }
      stack['delete'](array);
      stack['delete'](other);
      return result;
    }

    /**
     * A specialized version of `baseIsEqualDeep` for comparing objects of
     * the same `toStringTag`.
     *
     * **Note:** This function only supports comparing values with tags of
     * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {string} tag The `toStringTag` of the objects to compare.
     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
     * @param {Function} customizer The function to customize comparisons.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Object} stack Tracks traversed `object` and `other` objects.
     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
     */
    function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
      switch (tag) {
        case dataViewTag:
          if ((object.byteLength != other.byteLength) ||
              (object.byteOffset != other.byteOffset)) {
            return false;
          }
          object = object.buffer;
          other = other.buffer;

        case arrayBufferTag:
          if ((object.byteLength != other.byteLength) ||
              !equalFunc(new Uint8Array(object), new Uint8Array(other))) {
            return false;
          }
          return true;

        case boolTag:
        case dateTag:
        case numberTag:
          // Coerce booleans to `1` or `0` and dates to milliseconds.
          // Invalid dates are coerced to `NaN`.
          return eq(+object, +other);

        case errorTag:
          return object.name == other.name && object.message == other.message;

        case regexpTag:
        case stringTag:
          // Coerce regexes to strings and treat strings, primitives and objects,
          // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring
          // for more details.
          return object == (other + '');

        case mapTag:
          var convert = mapToArray;

        case setTag:
          var isPartial = bitmask & COMPARE_PARTIAL_FLAG;
          convert || (convert = setToArray);

          if (object.size != other.size && !isPartial) {
            return false;
          }
          // Assume cyclic values are equal.
          var stacked = stack.get(object);
          if (stacked) {
            return stacked == other;
          }
          bitmask |= COMPARE_UNORDERED_FLAG;

          // Recursively compare objects (susceptible to call stack limits).
          stack.set(object, other);
          var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);
          stack['delete'](object);
          return result;

        case symbolTag:
          if (symbolValueOf) {
            return symbolValueOf.call(object) == symbolValueOf.call(other);
          }
      }
      return false;
    }

    /**
     * A specialized version of `baseIsEqualDeep` for objects with support for
     * partial deep comparisons.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
     * @param {Function} customizer The function to customize comparisons.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Object} stack Tracks traversed `object` and `other` objects.
     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
     */
    function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
          objProps = getAllKeys(object),
          objLength = objProps.length,
          othProps = getAllKeys(other),
          othLength = othProps.length;

      if (objLength != othLength && !isPartial) {
        return false;
      }
      var index = objLength;
      while (index--) {
        var key = objProps[index];
        if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {
          return false;
        }
      }
      // Assume cyclic values are equal.
      var stacked = stack.get(object);
      if (stacked && stack.get(other)) {
        return stacked == other;
      }
      var result = true;
      stack.set(object, other);
      stack.set(other, object);

      var skipCtor = isPartial;
      while (++index < objLength) {
        key = objProps[index];
        var objValue = object[key],
            othValue = other[key];

        if (customizer) {
          var compared = isPartial
            ? customizer(othValue, objValue, key, other, object, stack)
            : customizer(objValue, othValue, key, object, other, stack);
        }
        // Recursively compare objects (susceptible to call stack limits).
        if (!(compared === undefined
              ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))
              : compared
            )) {
          result = false;
          break;
        }
        skipCtor || (skipCtor = key == 'constructor');
      }
      if (result && !skipCtor) {
        var objCtor = object.constructor,
            othCtor = other.constructor;

        // Non `Object` object instances with different constructors are not equal.
        if (objCtor != othCtor &&
            ('constructor' in object && 'constructor' in other) &&
            !(typeof objCtor == 'function' && objCtor instanceof objCtor &&
              typeof othCtor == 'function' && othCtor instanceof othCtor)) {
          result = false;
        }
      }
      stack['delete'](object);
      stack['delete'](other);
      return result;
    }

    /**
     * A specialized version of `baseRest` which flattens the rest array.
     *
     * @private
     * @param {Function} func The function to apply a rest parameter to.
     * @returns {Function} Returns the new function.
     */
    function flatRest(func) {
      return setToString(overRest(func, undefined, flatten), func + '');
    }

    /**
     * Creates an array of own enumerable property names and symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names and symbols.
     */
    function getAllKeys(object) {
      return baseGetAllKeys(object, keys, getSymbols);
    }

    /**
     * Creates an array of own and inherited enumerable property names and
     * symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names and symbols.
     */
    function getAllKeysIn(object) {
      return baseGetAllKeys(object, keysIn, getSymbolsIn);
    }

    /**
     * Gets metadata for `func`.
     *
     * @private
     * @param {Function} func The function to query.
     * @returns {*} Returns the metadata for `func`.
     */
    var getData = !metaMap ? noop : function(func) {
      return metaMap.get(func);
    };

    /**
     * Gets the name of `func`.
     *
     * @private
     * @param {Function} func The function to query.
     * @returns {string} Returns the function name.
     */
    function getFuncName(func) {
      var result = (func.name + ''),
          array = realNames[result],
          length = hasOwnProperty.call(realNames, result) ? array.length : 0;

      while (length--) {
        var data = array[length],
            otherFunc = data.func;
        if (otherFunc == null || otherFunc == func) {
          return data.name;
        }
      }
      return result;
    }

    /**
     * Gets the argument placeholder value for `func`.
     *
     * @private
     * @param {Function} func The function to inspect.
     * @returns {*} Returns the placeholder value.
     */
    function getHolder(func) {
      var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;
      return object.placeholder;
    }

    /**
     * Gets the appropriate "iteratee" function. If `_.iteratee` is customized,
     * this function returns the custom method, otherwise it returns `baseIteratee`.
     * If arguments are provided, the chosen function is invoked with them and
     * its result is returned.
     *
     * @private
     * @param {*} [value] The value to convert to an iteratee.
     * @param {number} [arity] The arity of the created iteratee.
     * @returns {Function} Returns the chosen function or its result.
     */
    function getIteratee() {
      var result = lodash.iteratee || iteratee;
      result = result === iteratee ? baseIteratee : result;
      return arguments.length ? result(arguments[0], arguments[1]) : result;
    }

    /**
     * Gets the data for `map`.
     *
     * @private
     * @param {Object} map The map to query.
     * @param {string} key The reference key.
     * @returns {*} Returns the map data.
     */
    function getMapData(map, key) {
      var data = map.__data__;
      return isKeyable(key)
        ? data[typeof key == 'string' ? 'string' : 'hash']
        : data.map;
    }

    /**
     * Gets the property names, values, and compare flags of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the match data of `object`.
     */
    function getMatchData(object) {
      var result = keys(object),
          length = result.length;

      while (length--) {
        var key = result[length],
            value = object[key];

        result[length] = [key, value, isStrictComparable(value)];
      }
      return result;
    }

    /**
     * Gets the native function at `key` of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {string} key The key of the method to get.
     * @returns {*} Returns the function if it's native, else `undefined`.
     */
    function getNative(object, key) {
      var value = getValue(object, key);
      return baseIsNative(value) ? value : undefined;
    }

    /**
     * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
     *
     * @private
     * @param {*} value The value to query.
     * @returns {string} Returns the raw `toStringTag`.
     */
    function getRawTag(value) {
      var isOwn = hasOwnProperty.call(value, symToStringTag),
          tag = value[symToStringTag];

      try {
        value[symToStringTag] = undefined;
        var unmasked = true;
      } catch (e) {}

      var result = nativeObjectToString.call(value);
      if (unmasked) {
        if (isOwn) {
          value[symToStringTag] = tag;
        } else {
          delete value[symToStringTag];
        }
      }
      return result;
    }

    /**
     * Creates an array of the own enumerable symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of symbols.
     */
    var getSymbols = !nativeGetSymbols ? stubArray : function(object) {
      if (object == null) {
        return [];
      }
      object = Object(object);
      return arrayFilter(nativeGetSymbols(object), function(symbol) {
        return propertyIsEnumerable.call(object, symbol);
      });
    };

    /**
     * Creates an array of the own and inherited enumerable symbols of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of symbols.
     */
    var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {
      var result = [];
      while (object) {
        arrayPush(result, getSymbols(object));
        object = getPrototype(object);
      }
      return result;
    };

    /**
     * Gets the `toStringTag` of `value`.
     *
     * @private
     * @param {*} value The value to query.
     * @returns {string} Returns the `toStringTag`.
     */
    var getTag = baseGetTag;

    // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.
    if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
        (Map && getTag(new Map) != mapTag) ||
        (Promise && getTag(Promise.resolve()) != promiseTag) ||
        (Set && getTag(new Set) != setTag) ||
        (WeakMap && getTag(new WeakMap) != weakMapTag)) {
      getTag = function(value) {
        var result = baseGetTag(value),
            Ctor = result == objectTag ? value.constructor : undefined,
            ctorString = Ctor ? toSource(Ctor) : '';

        if (ctorString) {
          switch (ctorString) {
            case dataViewCtorString: return dataViewTag;
            case mapCtorString: return mapTag;
            case promiseCtorString: return promiseTag;
            case setCtorString: return setTag;
            case weakMapCtorString: return weakMapTag;
          }
        }
        return result;
      };
    }

    /**
     * Gets the view, applying any `transforms` to the `start` and `end` positions.
     *
     * @private
     * @param {number} start The start of the view.
     * @param {number} end The end of the view.
     * @param {Array} transforms The transformations to apply to the view.
     * @returns {Object} Returns an object containing the `start` and `end`
     *  positions of the view.
     */
    function getView(start, end, transforms) {
      var index = -1,
          length = transforms.length;

      while (++index < length) {
        var data = transforms[index],
            size = data.size;

        switch (data.type) {
          case 'drop':      start += size; break;
          case 'dropRight': end -= size; break;
          case 'take':      end = nativeMin(end, start + size); break;
          case 'takeRight': start = nativeMax(start, end - size); break;
        }
      }
      return { 'start': start, 'end': end };
    }

    /**
     * Extracts wrapper details from the `source` body comment.
     *
     * @private
     * @param {string} source The source to inspect.
     * @returns {Array} Returns the wrapper details.
     */
    function getWrapDetails(source) {
      var match = source.match(reWrapDetails);
      return match ? match[1].split(reSplitDetails) : [];
    }

    /**
     * Checks if `path` exists on `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array|string} path The path to check.
     * @param {Function} hasFunc The function to check properties.
     * @returns {boolean} Returns `true` if `path` exists, else `false`.
     */
    function hasPath(object, path, hasFunc) {
      path = castPath(path, object);

      var index = -1,
          length = path.length,
          result = false;

      while (++index < length) {
        var key = toKey(path[index]);
        if (!(result = object != null && hasFunc(object, key))) {
          break;
        }
        object = object[key];
      }
      if (result || ++index != length) {
        return result;
      }
      length = object == null ? 0 : object.length;
      return !!length && isLength(length) && isIndex(key, length) &&
        (isArray(object) || isArguments(object));
    }

    /**
     * Initializes an array clone.
     *
     * @private
     * @param {Array} array The array to clone.
     * @returns {Array} Returns the initialized clone.
     */
    function initCloneArray(array) {
      var length = array.length,
          result = new array.constructor(length);

      // Add properties assigned by `RegExp#exec`.
      if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
        result.index = array.index;
        result.input = array.input;
      }
      return result;
    }

    /**
     * Initializes an object clone.
     *
     * @private
     * @param {Object} object The object to clone.
     * @returns {Object} Returns the initialized clone.
     */
    function initCloneObject(object) {
      return (typeof object.constructor == 'function' && !isPrototype(object))
        ? baseCreate(getPrototype(object))
        : {};
    }

    /**
     * Initializes an object clone based on its `toStringTag`.
     *
     * **Note:** This function only supports cloning values with tags of
     * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.
     *
     * @private
     * @param {Object} object The object to clone.
     * @param {string} tag The `toStringTag` of the object to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Object} Returns the initialized clone.
     */
    function initCloneByTag(object, tag, isDeep) {
      var Ctor = object.constructor;
      switch (tag) {
        case arrayBufferTag:
          return cloneArrayBuffer(object);

        case boolTag:
        case dateTag:
          return new Ctor(+object);

        case dataViewTag:
          return cloneDataView(object, isDeep);

        case float32Tag: case float64Tag:
        case int8Tag: case int16Tag: case int32Tag:
        case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
          return cloneTypedArray(object, isDeep);

        case mapTag:
          return new Ctor;

        case numberTag:
        case stringTag:
          return new Ctor(object);

        case regexpTag:
          return cloneRegExp(object);

        case setTag:
          return new Ctor;

        case symbolTag:
          return cloneSymbol(object);
      }
    }

    /**
     * Inserts wrapper `details` in a comment at the top of the `source` body.
     *
     * @private
     * @param {string} source The source to modify.
     * @returns {Array} details The details to insert.
     * @returns {string} Returns the modified source.
     */
    function insertWrapDetails(source, details) {
      var length = details.length;
      if (!length) {
        return source;
      }
      var lastIndex = length - 1;
      details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];
      details = details.join(length > 2 ? ', ' : ' ');
      return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n');
    }

    /**
     * Checks if `value` is a flattenable `arguments` object or array.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.
     */
    function isFlattenable(value) {
      return isArray(value) || isArguments(value) ||
        !!(spreadableSymbol && value && value[spreadableSymbol]);
    }

    /**
     * Checks if `value` is a valid array-like index.
     *
     * @private
     * @param {*} value The value to check.
     * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
     * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
     */
    function isIndex(value, length) {
      var type = typeof value;
      length = length == null ? MAX_SAFE_INTEGER : length;

      return !!length &&
        (type == 'number' ||
          (type != 'symbol' && reIsUint.test(value))) &&
            (value > -1 && value % 1 == 0 && value < length);
    }

    /**
     * Checks if the given arguments are from an iteratee call.
     *
     * @private
     * @param {*} value The potential iteratee value argument.
     * @param {*} index The potential iteratee index or key argument.
     * @param {*} object The potential iteratee object argument.
     * @returns {boolean} Returns `true` if the arguments are from an iteratee call,
     *  else `false`.
     */
    function isIterateeCall(value, index, object) {
      if (!isObject(object)) {
        return false;
      }
      var type = typeof index;
      if (type == 'number'
            ? (isArrayLike(object) && isIndex(index, object.length))
            : (type == 'string' && index in object)
          ) {
        return eq(object[index], value);
      }
      return false;
    }

    /**
     * Checks if `value` is a property name and not a property path.
     *
     * @private
     * @param {*} value The value to check.
     * @param {Object} [object] The object to query keys on.
     * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
     */
    function isKey(value, object) {
      if (isArray(value)) {
        return false;
      }
      var type = typeof value;
      if (type == 'number' || type == 'symbol' || type == 'boolean' ||
          value == null || isSymbol(value)) {
        return true;
      }
      return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
        (object != null && value in Object(object));
    }

    /**
     * Checks if `value` is suitable for use as unique object key.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
     */
    function isKeyable(value) {
      var type = typeof value;
      return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
        ? (value !== '__proto__')
        : (value === null);
    }

    /**
     * Checks if `func` has a lazy counterpart.
     *
     * @private
     * @param {Function} func The function to check.
     * @returns {boolean} Returns `true` if `func` has a lazy counterpart,
     *  else `false`.
     */
    function isLaziable(func) {
      var funcName = getFuncName(func),
          other = lodash[funcName];

      if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {
        return false;
      }
      if (func === other) {
        return true;
      }
      var data = getData(other);
      return !!data && func === data[0];
    }

    /**
     * Checks if `func` has its source masked.
     *
     * @private
     * @param {Function} func The function to check.
     * @returns {boolean} Returns `true` if `func` is masked, else `false`.
     */
    function isMasked(func) {
      return !!maskSrcKey && (maskSrcKey in func);
    }

    /**
     * Checks if `func` is capable of being masked.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `func` is maskable, else `false`.
     */
    var isMaskable = coreJsData ? isFunction : stubFalse;

    /**
     * Checks if `value` is likely a prototype object.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
     */
    function isPrototype(value) {
      var Ctor = value && value.constructor,
          proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;

      return value === proto;
    }

    /**
     * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` if suitable for strict
     *  equality comparisons, else `false`.
     */
    function isStrictComparable(value) {
      return value === value && !isObject(value);
    }

    /**
     * A specialized version of `matchesProperty` for source values suitable
     * for strict equality comparisons, i.e. `===`.
     *
     * @private
     * @param {string} key The key of the property to get.
     * @param {*} srcValue The value to match.
     * @returns {Function} Returns the new spec function.
     */
    function matchesStrictComparable(key, srcValue) {
      return function(object) {
        if (object == null) {
          return false;
        }
        return object[key] === srcValue &&
          (srcValue !== undefined || (key in Object(object)));
      };
    }

    /**
     * A specialized version of `_.memoize` which clears the memoized function's
     * cache when it exceeds `MAX_MEMOIZE_SIZE`.
     *
     * @private
     * @param {Function} func The function to have its output memoized.
     * @returns {Function} Returns the new memoized function.
     */
    function memoizeCapped(func) {
      var result = memoize(func, function(key) {
        if (cache.size === MAX_MEMOIZE_SIZE) {
          cache.clear();
        }
        return key;
      });

      var cache = result.cache;
      return result;
    }

    /**
     * Merges the function metadata of `source` into `data`.
     *
     * Merging metadata reduces the number of wrappers used to invoke a function.
     * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`
     * may be applied regardless of execution order. Methods like `_.ary` and
     * `_.rearg` modify function arguments, making the order in which they are
     * executed important, preventing the merging of metadata. However, we make
     * an exception for a safe combined case where curried functions have `_.ary`
     * and or `_.rearg` applied.
     *
     * @private
     * @param {Array} data The destination metadata.
     * @param {Array} source The source metadata.
     * @returns {Array} Returns `data`.
     */
    function mergeData(data, source) {
      var bitmask = data[1],
          srcBitmask = source[1],
          newBitmask = bitmask | srcBitmask,
          isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);

      var isCombo =
        ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||
        ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||
        ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));

      // Exit early if metadata can't be merged.
      if (!(isCommon || isCombo)) {
        return data;
      }
      // Use source `thisArg` if available.
      if (srcBitmask & WRAP_BIND_FLAG) {
        data[2] = source[2];
        // Set when currying a bound function.
        newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;
      }
      // Compose partial arguments.
      var value = source[3];
      if (value) {
        var partials = data[3];
        data[3] = partials ? composeArgs(partials, value, source[4]) : value;
        data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];
      }
      // Compose partial right arguments.
      value = source[5];
      if (value) {
        partials = data[5];
        data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;
        data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];
      }
      // Use source `argPos` if available.
      value = source[7];
      if (value) {
        data[7] = value;
      }
      // Use source `ary` if it's smaller.
      if (srcBitmask & WRAP_ARY_FLAG) {
        data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);
      }
      // Use source `arity` if one is not provided.
      if (data[9] == null) {
        data[9] = source[9];
      }
      // Use source `func` and merge bitmasks.
      data[0] = source[0];
      data[1] = newBitmask;

      return data;
    }

    /**
     * This function is like
     * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
     * except that it includes inherited enumerable properties.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     */
    function nativeKeysIn(object) {
      var result = [];
      if (object != null) {
        for (var key in Object(object)) {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * Converts `value` to a string using `Object.prototype.toString`.
     *
     * @private
     * @param {*} value The value to convert.
     * @returns {string} Returns the converted string.
     */
    function objectToString(value) {
      return nativeObjectToString.call(value);
    }

    /**
     * A specialized version of `baseRest` which transforms the rest array.
     *
     * @private
     * @param {Function} func The function to apply a rest parameter to.
     * @param {number} [start=func.length-1] The start position of the rest parameter.
     * @param {Function} transform The rest array transform.
     * @returns {Function} Returns the new function.
     */
    function overRest(func, start, transform) {
      start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
      return function() {
        var args = arguments,
            index = -1,
            length = nativeMax(args.length - start, 0),
            array = Array(length);

        while (++index < length) {
          array[index] = args[start + index];
        }
        index = -1;
        var otherArgs = Array(start + 1);
        while (++index < start) {
          otherArgs[index] = args[index];
        }
        otherArgs[start] = transform(array);
        return apply(func, this, otherArgs);
      };
    }

    /**
     * Gets the parent value at `path` of `object`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array} path The path to get the parent value of.
     * @returns {*} Returns the parent value.
     */
    function parent(object, path) {
      return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));
    }

    /**
     * Reorder `array` according to the specified indexes where the element at
     * the first index is assigned as the first element, the element at
     * the second index is assigned as the second element, and so on.
     *
     * @private
     * @param {Array} array The array to reorder.
     * @param {Array} indexes The arranged array indexes.
     * @returns {Array} Returns `array`.
     */
    function reorder(array, indexes) {
      var arrLength = array.length,
          length = nativeMin(indexes.length, arrLength),
          oldArray = copyArray(array);

      while (length--) {
        var index = indexes[length];
        array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;
      }
      return array;
    }

    /**
     * Gets the value at `key`, unless `key` is "__proto__" or "constructor".
     *
     * @private
     * @param {Object} object The object to query.
     * @param {string} key The key of the property to get.
     * @returns {*} Returns the property value.
     */
    function safeGet(object, key) {
      if (key === 'constructor' && typeof object[key] === 'function') {
        return;
      }

      if (key == '__proto__') {
        return;
      }

      return object[key];
    }

    /**
     * Sets metadata for `func`.
     *
     * **Note:** If this function becomes hot, i.e. is invoked a lot in a short
     * period of time, it will trip its breaker and transition to an identity
     * function to avoid garbage collection pauses in V8. See
     * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)
     * for more details.
     *
     * @private
     * @param {Function} func The function to associate metadata with.
     * @param {*} data The metadata.
     * @returns {Function} Returns `func`.
     */
    var setData = shortOut(baseSetData);

    /**
     * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).
     *
     * @private
     * @param {Function} func The function to delay.
     * @param {number} wait The number of milliseconds to delay invocation.
     * @returns {number|Object} Returns the timer id or timeout object.
     */
    var setTimeout = ctxSetTimeout || function(func, wait) {
      return root.setTimeout(func, wait);
    };

    /**
     * Sets the `toString` method of `func` to return `string`.
     *
     * @private
     * @param {Function} func The function to modify.
     * @param {Function} string The `toString` result.
     * @returns {Function} Returns `func`.
     */
    var setToString = shortOut(baseSetToString);

    /**
     * Sets the `toString` method of `wrapper` to mimic the source of `reference`
     * with wrapper details in a comment at the top of the source body.
     *
     * @private
     * @param {Function} wrapper The function to modify.
     * @param {Function} reference The reference function.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @returns {Function} Returns `wrapper`.
     */
    function setWrapToString(wrapper, reference, bitmask) {
      var source = (reference + '');
      return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));
    }

    /**
     * Creates a function that'll short out and invoke `identity` instead
     * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`
     * milliseconds.
     *
     * @private
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new shortable function.
     */
    function shortOut(func) {
      var count = 0,
          lastCalled = 0;

      return function() {
        var stamp = nativeNow(),
            remaining = HOT_SPAN - (stamp - lastCalled);

        lastCalled = stamp;
        if (remaining > 0) {
          if (++count >= HOT_COUNT) {
            return arguments[0];
          }
        } else {
          count = 0;
        }
        return func.apply(undefined, arguments);
      };
    }

    /**
     * A specialized version of `_.shuffle` which mutates and sets the size of `array`.
     *
     * @private
     * @param {Array} array The array to shuffle.
     * @param {number} [size=array.length] The size of `array`.
     * @returns {Array} Returns `array`.
     */
    function shuffleSelf(array, size) {
      var index = -1,
          length = array.length,
          lastIndex = length - 1;

      size = size === undefined ? length : size;
      while (++index < size) {
        var rand = baseRandom(index, lastIndex),
            value = array[rand];

        array[rand] = array[index];
        array[index] = value;
      }
      array.length = size;
      return array;
    }

    /**
     * Converts `string` to a property path array.
     *
     * @private
     * @param {string} string The string to convert.
     * @returns {Array} Returns the property path array.
     */
    var stringToPath = memoizeCapped(function(string) {
      var result = [];
      if (string.charCodeAt(0) === 46 /* . */) {
        result.push('');
      }
      string.replace(rePropName, function(match, number, quote, subString) {
        result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));
      });
      return result;
    });

    /**
     * Converts `value` to a string key if it's not a string or symbol.
     *
     * @private
     * @param {*} value The value to inspect.
     * @returns {string|symbol} Returns the key.
     */
    function toKey(value) {
      if (typeof value == 'string' || isSymbol(value)) {
        return value;
      }
      var result = (value + '');
      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
    }

    /**
     * Converts `func` to its source code.
     *
     * @private
     * @param {Function} func The function to convert.
     * @returns {string} Returns the source code.
     */
    function toSource(func) {
      if (func != null) {
        try {
          return funcToString.call(func);
        } catch (e) {}
        try {
          return (func + '');
        } catch (e) {}
      }
      return '';
    }

    /**
     * Updates wrapper `details` based on `bitmask` flags.
     *
     * @private
     * @returns {Array} details The details to modify.
     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
     * @returns {Array} Returns `details`.
     */
    function updateWrapDetails(details, bitmask) {
      arrayEach(wrapFlags, function(pair) {
        var value = '_.' + pair[0];
        if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {
          details.push(value);
        }
      });
      return details.sort();
    }

    /**
     * Creates a clone of `wrapper`.
     *
     * @private
     * @param {Object} wrapper The wrapper to clone.
     * @returns {Object} Returns the cloned wrapper.
     */
    function wrapperClone(wrapper) {
      if (wrapper instanceof LazyWrapper) {
        return wrapper.clone();
      }
      var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);
      result.__actions__ = copyArray(wrapper.__actions__);
      result.__index__  = wrapper.__index__;
      result.__values__ = wrapper.__values__;
      return result;
    }

    /*------------------------------------------------------------------------*/

    /**
     * Creates an array of elements split into groups the length of `size`.
     * If `array` can't be split evenly, the final chunk will be the remaining
     * elements.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to process.
     * @param {number} [size=1] The length of each chunk
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the new array of chunks.
     * @example
     *
     * _.chunk(['a', 'b', 'c', 'd'], 2);
     * // => [['a', 'b'], ['c', 'd']]
     *
     * _.chunk(['a', 'b', 'c', 'd'], 3);
     * // => [['a', 'b', 'c'], ['d']]
     */
    function chunk(array, size, guard) {
      if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {
        size = 1;
      } else {
        size = nativeMax(toInteger(size), 0);
      }
      var length = array == null ? 0 : array.length;
      if (!length || size < 1) {
        return [];
      }
      var index = 0,
          resIndex = 0,
          result = Array(nativeCeil(length / size));

      while (index < length) {
        result[resIndex++] = baseSlice(array, index, (index += size));
      }
      return result;
    }

    /**
     * Creates an array with all falsey values removed. The values `false`, `null`,
     * `0`, `""`, `undefined`, and `NaN` are falsey.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to compact.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * _.compact([0, 1, false, 2, '', 3]);
     * // => [1, 2, 3]
     */
    function compact(array) {
      var index = -1,
          length = array == null ? 0 : array.length,
          resIndex = 0,
          result = [];

      while (++index < length) {
        var value = array[index];
        if (value) {
          result[resIndex++] = value;
        }
      }
      return result;
    }

    /**
     * Creates a new array concatenating `array` with any additional arrays
     * and/or values.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to concatenate.
     * @param {...*} [values] The values to concatenate.
     * @returns {Array} Returns the new concatenated array.
     * @example
     *
     * var array = [1];
     * var other = _.concat(array, 2, [3], [[4]]);
     *
     * console.log(other);
     * // => [1, 2, 3, [4]]
     *
     * console.log(array);
     * // => [1]
     */
    function concat() {
      var length = arguments.length;
      if (!length) {
        return [];
      }
      var args = Array(length - 1),
          array = arguments[0],
          index = length;

      while (index--) {
        args[index - 1] = arguments[index];
      }
      return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));
    }

    /**
     * Creates an array of `array` values not included in the other given arrays
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons. The order and references of result values are
     * determined by the first array.
     *
     * **Note:** Unlike `_.pullAll`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...Array} [values] The values to exclude.
     * @returns {Array} Returns the new array of filtered values.
     * @see _.without, _.xor
     * @example
     *
     * _.difference([2, 1], [2, 3]);
     * // => [1]
     */
    var difference = baseRest(function(array, values) {
      return isArrayLikeObject(array)
        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))
        : [];
    });

    /**
     * This method is like `_.difference` except that it accepts `iteratee` which
     * is invoked for each element of `array` and `values` to generate the criterion
     * by which they're compared. The order and references of result values are
     * determined by the first array. The iteratee is invoked with one argument:
     * (value).
     *
     * **Note:** Unlike `_.pullAllBy`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...Array} [values] The values to exclude.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);
     * // => [1.2]
     *
     * // The `_.property` iteratee shorthand.
     * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');
     * // => [{ 'x': 2 }]
     */
    var differenceBy = baseRest(function(array, values) {
      var iteratee = last(values);
      if (isArrayLikeObject(iteratee)) {
        iteratee = undefined;
      }
      return isArrayLikeObject(array)
        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))
        : [];
    });

    /**
     * This method is like `_.difference` except that it accepts `comparator`
     * which is invoked to compare elements of `array` to `values`. The order and
     * references of result values are determined by the first array. The comparator
     * is invoked with two arguments: (arrVal, othVal).
     *
     * **Note:** Unlike `_.pullAllWith`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...Array} [values] The values to exclude.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
     *
     * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);
     * // => [{ 'x': 2, 'y': 1 }]
     */
    var differenceWith = baseRest(function(array, values) {
      var comparator = last(values);
      if (isArrayLikeObject(comparator)) {
        comparator = undefined;
      }
      return isArrayLikeObject(array)
        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)
        : [];
    });

    /**
     * Creates a slice of `array` with `n` elements dropped from the beginning.
     *
     * @static
     * @memberOf _
     * @since 0.5.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to drop.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.drop([1, 2, 3]);
     * // => [2, 3]
     *
     * _.drop([1, 2, 3], 2);
     * // => [3]
     *
     * _.drop([1, 2, 3], 5);
     * // => []
     *
     * _.drop([1, 2, 3], 0);
     * // => [1, 2, 3]
     */
    function drop(array, n, guard) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      n = (guard || n === undefined) ? 1 : toInteger(n);
      return baseSlice(array, n < 0 ? 0 : n, length);
    }

    /**
     * Creates a slice of `array` with `n` elements dropped from the end.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to drop.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.dropRight([1, 2, 3]);
     * // => [1, 2]
     *
     * _.dropRight([1, 2, 3], 2);
     * // => [1]
     *
     * _.dropRight([1, 2, 3], 5);
     * // => []
     *
     * _.dropRight([1, 2, 3], 0);
     * // => [1, 2, 3]
     */
    function dropRight(array, n, guard) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      n = (guard || n === undefined) ? 1 : toInteger(n);
      n = length - n;
      return baseSlice(array, 0, n < 0 ? 0 : n);
    }

    /**
     * Creates a slice of `array` excluding elements dropped from the end.
     * Elements are dropped until `predicate` returns falsey. The predicate is
     * invoked with three arguments: (value, index, array).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': true },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': false }
     * ];
     *
     * _.dropRightWhile(users, function(o) { return !o.active; });
     * // => objects for ['barney']
     *
     * // The `_.matches` iteratee shorthand.
     * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });
     * // => objects for ['barney', 'fred']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.dropRightWhile(users, ['active', false]);
     * // => objects for ['barney']
     *
     * // The `_.property` iteratee shorthand.
     * _.dropRightWhile(users, 'active');
     * // => objects for ['barney', 'fred', 'pebbles']
     */
    function dropRightWhile(array, predicate) {
      return (array && array.length)
        ? baseWhile(array, getIteratee(predicate, 3), true, true)
        : [];
    }

    /**
     * Creates a slice of `array` excluding elements dropped from the beginning.
     * Elements are dropped until `predicate` returns falsey. The predicate is
     * invoked with three arguments: (value, index, array).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': false },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': true }
     * ];
     *
     * _.dropWhile(users, function(o) { return !o.active; });
     * // => objects for ['pebbles']
     *
     * // The `_.matches` iteratee shorthand.
     * _.dropWhile(users, { 'user': 'barney', 'active': false });
     * // => objects for ['fred', 'pebbles']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.dropWhile(users, ['active', false]);
     * // => objects for ['pebbles']
     *
     * // The `_.property` iteratee shorthand.
     * _.dropWhile(users, 'active');
     * // => objects for ['barney', 'fred', 'pebbles']
     */
    function dropWhile(array, predicate) {
      return (array && array.length)
        ? baseWhile(array, getIteratee(predicate, 3), true)
        : [];
    }

    /**
     * Fills elements of `array` with `value` from `start` up to, but not
     * including, `end`.
     *
     * **Note:** This method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 3.2.0
     * @category Array
     * @param {Array} array The array to fill.
     * @param {*} value The value to fill `array` with.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [1, 2, 3];
     *
     * _.fill(array, 'a');
     * console.log(array);
     * // => ['a', 'a', 'a']
     *
     * _.fill(Array(3), 2);
     * // => [2, 2, 2]
     *
     * _.fill([4, 6, 8, 10], '*', 1, 3);
     * // => [4, '*', '*', 10]
     */
    function fill(array, value, start, end) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {
        start = 0;
        end = length;
      }
      return baseFill(array, value, start, end);
    }

    /**
     * This method is like `_.find` except that it returns the index of the first
     * element `predicate` returns truthy for instead of the element itself.
     *
     * @static
     * @memberOf _
     * @since 1.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param {number} [fromIndex=0] The index to search from.
     * @returns {number} Returns the index of the found element, else `-1`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': false },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': true }
     * ];
     *
     * _.findIndex(users, function(o) { return o.user == 'barney'; });
     * // => 0
     *
     * // The `_.matches` iteratee shorthand.
     * _.findIndex(users, { 'user': 'fred', 'active': false });
     * // => 1
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.findIndex(users, ['active', false]);
     * // => 0
     *
     * // The `_.property` iteratee shorthand.
     * _.findIndex(users, 'active');
     * // => 2
     */
    function findIndex(array, predicate, fromIndex) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return -1;
      }
      var index = fromIndex == null ? 0 : toInteger(fromIndex);
      if (index < 0) {
        index = nativeMax(length + index, 0);
      }
      return baseFindIndex(array, getIteratee(predicate, 3), index);
    }

    /**
     * This method is like `_.findIndex` except that it iterates over elements
     * of `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param {number} [fromIndex=array.length-1] The index to search from.
     * @returns {number} Returns the index of the found element, else `-1`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': true },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': false }
     * ];
     *
     * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });
     * // => 2
     *
     * // The `_.matches` iteratee shorthand.
     * _.findLastIndex(users, { 'user': 'barney', 'active': true });
     * // => 0
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.findLastIndex(users, ['active', false]);
     * // => 2
     *
     * // The `_.property` iteratee shorthand.
     * _.findLastIndex(users, 'active');
     * // => 0
     */
    function findLastIndex(array, predicate, fromIndex) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return -1;
      }
      var index = length - 1;
      if (fromIndex !== undefined) {
        index = toInteger(fromIndex);
        index = fromIndex < 0
          ? nativeMax(length + index, 0)
          : nativeMin(index, length - 1);
      }
      return baseFindIndex(array, getIteratee(predicate, 3), index, true);
    }

    /**
     * Flattens `array` a single level deep.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to flatten.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * _.flatten([1, [2, [3, [4]], 5]]);
     * // => [1, 2, [3, [4]], 5]
     */
    function flatten(array) {
      var length = array == null ? 0 : array.length;
      return length ? baseFlatten(array, 1) : [];
    }

    /**
     * Recursively flattens `array`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to flatten.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * _.flattenDeep([1, [2, [3, [4]], 5]]);
     * // => [1, 2, 3, 4, 5]
     */
    function flattenDeep(array) {
      var length = array == null ? 0 : array.length;
      return length ? baseFlatten(array, INFINITY) : [];
    }

    /**
     * Recursively flatten `array` up to `depth` times.
     *
     * @static
     * @memberOf _
     * @since 4.4.0
     * @category Array
     * @param {Array} array The array to flatten.
     * @param {number} [depth=1] The maximum recursion depth.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * var array = [1, [2, [3, [4]], 5]];
     *
     * _.flattenDepth(array, 1);
     * // => [1, 2, [3, [4]], 5]
     *
     * _.flattenDepth(array, 2);
     * // => [1, 2, 3, [4], 5]
     */
    function flattenDepth(array, depth) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      depth = depth === undefined ? 1 : toInteger(depth);
      return baseFlatten(array, depth);
    }

    /**
     * The inverse of `_.toPairs`; this method returns an object composed
     * from key-value `pairs`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} pairs The key-value pairs.
     * @returns {Object} Returns the new object.
     * @example
     *
     * _.fromPairs([['a', 1], ['b', 2]]);
     * // => { 'a': 1, 'b': 2 }
     */
    function fromPairs(pairs) {
      var index = -1,
          length = pairs == null ? 0 : pairs.length,
          result = {};

      while (++index < length) {
        var pair = pairs[index];
        result[pair[0]] = pair[1];
      }
      return result;
    }

    /**
     * Gets the first element of `array`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @alias first
     * @category Array
     * @param {Array} array The array to query.
     * @returns {*} Returns the first element of `array`.
     * @example
     *
     * _.head([1, 2, 3]);
     * // => 1
     *
     * _.head([]);
     * // => undefined
     */
    function head(array) {
      return (array && array.length) ? array[0] : undefined;
    }

    /**
     * Gets the index at which the first occurrence of `value` is found in `array`
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons. If `fromIndex` is negative, it's used as the
     * offset from the end of `array`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @param {number} [fromIndex=0] The index to search from.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.indexOf([1, 2, 1, 2], 2);
     * // => 1
     *
     * // Search from the `fromIndex`.
     * _.indexOf([1, 2, 1, 2], 2, 2);
     * // => 3
     */
    function indexOf(array, value, fromIndex) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return -1;
      }
      var index = fromIndex == null ? 0 : toInteger(fromIndex);
      if (index < 0) {
        index = nativeMax(length + index, 0);
      }
      return baseIndexOf(array, value, index);
    }

    /**
     * Gets all but the last element of `array`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to query.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.initial([1, 2, 3]);
     * // => [1, 2]
     */
    function initial(array) {
      var length = array == null ? 0 : array.length;
      return length ? baseSlice(array, 0, -1) : [];
    }

    /**
     * Creates an array of unique values that are included in all given arrays
     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons. The order and references of result values are
     * determined by the first array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @returns {Array} Returns the new array of intersecting values.
     * @example
     *
     * _.intersection([2, 1], [2, 3]);
     * // => [2]
     */
    var intersection = baseRest(function(arrays) {
      var mapped = arrayMap(arrays, castArrayLikeObject);
      return (mapped.length && mapped[0] === arrays[0])
        ? baseIntersection(mapped)
        : [];
    });

    /**
     * This method is like `_.intersection` except that it accepts `iteratee`
     * which is invoked for each element of each `arrays` to generate the criterion
     * by which they're compared. The order and references of result values are
     * determined by the first array. The iteratee is invoked with one argument:
     * (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new array of intersecting values.
     * @example
     *
     * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);
     * // => [2.1]
     *
     * // The `_.property` iteratee shorthand.
     * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 1 }]
     */
    var intersectionBy = baseRest(function(arrays) {
      var iteratee = last(arrays),
          mapped = arrayMap(arrays, castArrayLikeObject);

      if (iteratee === last(mapped)) {
        iteratee = undefined;
      } else {
        mapped.pop();
      }
      return (mapped.length && mapped[0] === arrays[0])
        ? baseIntersection(mapped, getIteratee(iteratee, 2))
        : [];
    });

    /**
     * This method is like `_.intersection` except that it accepts `comparator`
     * which is invoked to compare elements of `arrays`. The order and references
     * of result values are determined by the first array. The comparator is
     * invoked with two arguments: (arrVal, othVal).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of intersecting values.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
     *
     * _.intersectionWith(objects, others, _.isEqual);
     * // => [{ 'x': 1, 'y': 2 }]
     */
    var intersectionWith = baseRest(function(arrays) {
      var comparator = last(arrays),
          mapped = arrayMap(arrays, castArrayLikeObject);

      comparator = typeof comparator == 'function' ? comparator : undefined;
      if (comparator) {
        mapped.pop();
      }
      return (mapped.length && mapped[0] === arrays[0])
        ? baseIntersection(mapped, undefined, comparator)
        : [];
    });

    /**
     * Converts all elements in `array` into a string separated by `separator`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to convert.
     * @param {string} [separator=','] The element separator.
     * @returns {string} Returns the joined string.
     * @example
     *
     * _.join(['a', 'b', 'c'], '~');
     * // => 'a~b~c'
     */
    function join(array, separator) {
      return array == null ? '' : nativeJoin.call(array, separator);
    }

    /**
     * Gets the last element of `array`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to query.
     * @returns {*} Returns the last element of `array`.
     * @example
     *
     * _.last([1, 2, 3]);
     * // => 3
     */
    function last(array) {
      var length = array == null ? 0 : array.length;
      return length ? array[length - 1] : undefined;
    }

    /**
     * This method is like `_.indexOf` except that it iterates over elements of
     * `array` from right to left.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @param {number} [fromIndex=array.length-1] The index to search from.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.lastIndexOf([1, 2, 1, 2], 2);
     * // => 3
     *
     * // Search from the `fromIndex`.
     * _.lastIndexOf([1, 2, 1, 2], 2, 2);
     * // => 1
     */
    function lastIndexOf(array, value, fromIndex) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return -1;
      }
      var index = length;
      if (fromIndex !== undefined) {
        index = toInteger(fromIndex);
        index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);
      }
      return value === value
        ? strictLastIndexOf(array, value, index)
        : baseFindIndex(array, baseIsNaN, index, true);
    }

    /**
     * Gets the element at index `n` of `array`. If `n` is negative, the nth
     * element from the end is returned.
     *
     * @static
     * @memberOf _
     * @since 4.11.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=0] The index of the element to return.
     * @returns {*} Returns the nth element of `array`.
     * @example
     *
     * var array = ['a', 'b', 'c', 'd'];
     *
     * _.nth(array, 1);
     * // => 'b'
     *
     * _.nth(array, -2);
     * // => 'c';
     */
    function nth(array, n) {
      return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;
    }

    /**
     * Removes all given values from `array` using
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`
     * to remove elements from an array by predicate.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {...*} [values] The values to remove.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
     *
     * _.pull(array, 'a', 'c');
     * console.log(array);
     * // => ['b', 'b']
     */
    var pull = baseRest(pullAll);

    /**
     * This method is like `_.pull` except that it accepts an array of values to remove.
     *
     * **Note:** Unlike `_.difference`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Array} values The values to remove.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
     *
     * _.pullAll(array, ['a', 'c']);
     * console.log(array);
     * // => ['b', 'b']
     */
    function pullAll(array, values) {
      return (array && array.length && values && values.length)
        ? basePullAll(array, values)
        : array;
    }

    /**
     * This method is like `_.pullAll` except that it accepts `iteratee` which is
     * invoked for each element of `array` and `values` to generate the criterion
     * by which they're compared. The iteratee is invoked with one argument: (value).
     *
     * **Note:** Unlike `_.differenceBy`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Array} values The values to remove.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];
     *
     * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');
     * console.log(array);
     * // => [{ 'x': 2 }]
     */
    function pullAllBy(array, values, iteratee) {
      return (array && array.length && values && values.length)
        ? basePullAll(array, values, getIteratee(iteratee, 2))
        : array;
    }

    /**
     * This method is like `_.pullAll` except that it accepts `comparator` which
     * is invoked to compare elements of `array` to `values`. The comparator is
     * invoked with two arguments: (arrVal, othVal).
     *
     * **Note:** Unlike `_.differenceWith`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 4.6.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Array} values The values to remove.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];
     *
     * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);
     * console.log(array);
     * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]
     */
    function pullAllWith(array, values, comparator) {
      return (array && array.length && values && values.length)
        ? basePullAll(array, values, undefined, comparator)
        : array;
    }

    /**
     * Removes elements from `array` corresponding to `indexes` and returns an
     * array of removed elements.
     *
     * **Note:** Unlike `_.at`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {...(number|number[])} [indexes] The indexes of elements to remove.
     * @returns {Array} Returns the new array of removed elements.
     * @example
     *
     * var array = ['a', 'b', 'c', 'd'];
     * var pulled = _.pullAt(array, [1, 3]);
     *
     * console.log(array);
     * // => ['a', 'c']
     *
     * console.log(pulled);
     * // => ['b', 'd']
     */
    var pullAt = flatRest(function(array, indexes) {
      var length = array == null ? 0 : array.length,
          result = baseAt(array, indexes);

      basePullAt(array, arrayMap(indexes, function(index) {
        return isIndex(index, length) ? +index : index;
      }).sort(compareAscending));

      return result;
    });

    /**
     * Removes all elements from `array` that `predicate` returns truthy for
     * and returns an array of the removed elements. The predicate is invoked
     * with three arguments: (value, index, array).
     *
     * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`
     * to pull elements from an array by value.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new array of removed elements.
     * @example
     *
     * var array = [1, 2, 3, 4];
     * var evens = _.remove(array, function(n) {
     *   return n % 2 == 0;
     * });
     *
     * console.log(array);
     * // => [1, 3]
     *
     * console.log(evens);
     * // => [2, 4]
     */
    function remove(array, predicate) {
      var result = [];
      if (!(array && array.length)) {
        return result;
      }
      var index = -1,
          indexes = [],
          length = array.length;

      predicate = getIteratee(predicate, 3);
      while (++index < length) {
        var value = array[index];
        if (predicate(value, index, array)) {
          result.push(value);
          indexes.push(index);
        }
      }
      basePullAt(array, indexes);
      return result;
    }

    /**
     * Reverses `array` so that the first element becomes the last, the second
     * element becomes the second to last, and so on.
     *
     * **Note:** This method mutates `array` and is based on
     * [`Array#reverse`](https://mdn.io/Array/reverse).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to modify.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [1, 2, 3];
     *
     * _.reverse(array);
     * // => [3, 2, 1]
     *
     * console.log(array);
     * // => [3, 2, 1]
     */
    function reverse(array) {
      return array == null ? array : nativeReverse.call(array);
    }

    /**
     * Creates a slice of `array` from `start` up to, but not including, `end`.
     *
     * **Note:** This method is used instead of
     * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are
     * returned.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to slice.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns the slice of `array`.
     */
    function slice(array, start, end) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {
        start = 0;
        end = length;
      }
      else {
        start = start == null ? 0 : toInteger(start);
        end = end === undefined ? length : toInteger(end);
      }
      return baseSlice(array, start, end);
    }

    /**
     * Uses a binary search to determine the lowest index at which `value`
     * should be inserted into `array` in order to maintain its sort order.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * _.sortedIndex([30, 50], 40);
     * // => 1
     */
    function sortedIndex(array, value) {
      return baseSortedIndex(array, value);
    }

    /**
     * This method is like `_.sortedIndex` except that it accepts `iteratee`
     * which is invoked for `value` and each element of `array` to compute their
     * sort ranking. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * var objects = [{ 'x': 4 }, { 'x': 5 }];
     *
     * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
     * // => 0
     *
     * // The `_.property` iteratee shorthand.
     * _.sortedIndexBy(objects, { 'x': 4 }, 'x');
     * // => 0
     */
    function sortedIndexBy(array, value, iteratee) {
      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));
    }

    /**
     * This method is like `_.indexOf` except that it performs a binary
     * search on a sorted `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.sortedIndexOf([4, 5, 5, 5, 6], 5);
     * // => 1
     */
    function sortedIndexOf(array, value) {
      var length = array == null ? 0 : array.length;
      if (length) {
        var index = baseSortedIndex(array, value);
        if (index < length && eq(array[index], value)) {
          return index;
        }
      }
      return -1;
    }

    /**
     * This method is like `_.sortedIndex` except that it returns the highest
     * index at which `value` should be inserted into `array` in order to
     * maintain its sort order.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * _.sortedLastIndex([4, 5, 5, 5, 6], 5);
     * // => 4
     */
    function sortedLastIndex(array, value) {
      return baseSortedIndex(array, value, true);
    }

    /**
     * This method is like `_.sortedLastIndex` except that it accepts `iteratee`
     * which is invoked for `value` and each element of `array` to compute their
     * sort ranking. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * var objects = [{ 'x': 4 }, { 'x': 5 }];
     *
     * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
     * // => 1
     *
     * // The `_.property` iteratee shorthand.
     * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');
     * // => 1
     */
    function sortedLastIndexBy(array, value, iteratee) {
      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);
    }

    /**
     * This method is like `_.lastIndexOf` except that it performs a binary
     * search on a sorted `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {*} value The value to search for.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);
     * // => 3
     */
    function sortedLastIndexOf(array, value) {
      var length = array == null ? 0 : array.length;
      if (length) {
        var index = baseSortedIndex(array, value, true) - 1;
        if (eq(array[index], value)) {
          return index;
        }
      }
      return -1;
    }

    /**
     * This method is like `_.uniq` except that it's designed and optimized
     * for sorted arrays.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * _.sortedUniq([1, 1, 2]);
     * // => [1, 2]
     */
    function sortedUniq(array) {
      return (array && array.length)
        ? baseSortedUniq(array)
        : [];
    }

    /**
     * This method is like `_.uniqBy` except that it's designed and optimized
     * for sorted arrays.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee] The iteratee invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);
     * // => [1.1, 2.3]
     */
    function sortedUniqBy(array, iteratee) {
      return (array && array.length)
        ? baseSortedUniq(array, getIteratee(iteratee, 2))
        : [];
    }

    /**
     * Gets all but the first element of `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.tail([1, 2, 3]);
     * // => [2, 3]
     */
    function tail(array) {
      var length = array == null ? 0 : array.length;
      return length ? baseSlice(array, 1, length) : [];
    }

    /**
     * Creates a slice of `array` with `n` elements taken from the beginning.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to take.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.take([1, 2, 3]);
     * // => [1]
     *
     * _.take([1, 2, 3], 2);
     * // => [1, 2]
     *
     * _.take([1, 2, 3], 5);
     * // => [1, 2, 3]
     *
     * _.take([1, 2, 3], 0);
     * // => []
     */
    function take(array, n, guard) {
      if (!(array && array.length)) {
        return [];
      }
      n = (guard || n === undefined) ? 1 : toInteger(n);
      return baseSlice(array, 0, n < 0 ? 0 : n);
    }

    /**
     * Creates a slice of `array` with `n` elements taken from the end.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to take.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.takeRight([1, 2, 3]);
     * // => [3]
     *
     * _.takeRight([1, 2, 3], 2);
     * // => [2, 3]
     *
     * _.takeRight([1, 2, 3], 5);
     * // => [1, 2, 3]
     *
     * _.takeRight([1, 2, 3], 0);
     * // => []
     */
    function takeRight(array, n, guard) {
      var length = array == null ? 0 : array.length;
      if (!length) {
        return [];
      }
      n = (guard || n === undefined) ? 1 : toInteger(n);
      n = length - n;
      return baseSlice(array, n < 0 ? 0 : n, length);
    }

    /**
     * Creates a slice of `array` with elements taken from the end. Elements are
     * taken until `predicate` returns falsey. The predicate is invoked with
     * three arguments: (value, index, array).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': true },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': false }
     * ];
     *
     * _.takeRightWhile(users, function(o) { return !o.active; });
     * // => objects for ['fred', 'pebbles']
     *
     * // The `_.matches` iteratee shorthand.
     * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });
     * // => objects for ['pebbles']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.takeRightWhile(users, ['active', false]);
     * // => objects for ['fred', 'pebbles']
     *
     * // The `_.property` iteratee shorthand.
     * _.takeRightWhile(users, 'active');
     * // => []
     */
    function takeRightWhile(array, predicate) {
      return (array && array.length)
        ? baseWhile(array, getIteratee(predicate, 3), false, true)
        : [];
    }

    /**
     * Creates a slice of `array` with elements taken from the beginning. Elements
     * are taken until `predicate` returns falsey. The predicate is invoked with
     * three arguments: (value, index, array).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'active': false },
     *   { 'user': 'fred',    'active': false },
     *   { 'user': 'pebbles', 'active': true }
     * ];
     *
     * _.takeWhile(users, function(o) { return !o.active; });
     * // => objects for ['barney', 'fred']
     *
     * // The `_.matches` iteratee shorthand.
     * _.takeWhile(users, { 'user': 'barney', 'active': false });
     * // => objects for ['barney']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.takeWhile(users, ['active', false]);
     * // => objects for ['barney', 'fred']
     *
     * // The `_.property` iteratee shorthand.
     * _.takeWhile(users, 'active');
     * // => []
     */
    function takeWhile(array, predicate) {
      return (array && array.length)
        ? baseWhile(array, getIteratee(predicate, 3))
        : [];
    }

    /**
     * Creates an array of unique values, in order, from all given arrays using
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @returns {Array} Returns the new array of combined values.
     * @example
     *
     * _.union([2], [1, 2]);
     * // => [2, 1]
     */
    var union = baseRest(function(arrays) {
      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));
    });

    /**
     * This method is like `_.union` except that it accepts `iteratee` which is
     * invoked for each element of each `arrays` to generate the criterion by
     * which uniqueness is computed. Result values are chosen from the first
     * array in which the value occurs. The iteratee is invoked with one argument:
     * (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new array of combined values.
     * @example
     *
     * _.unionBy([2.1], [1.2, 2.3], Math.floor);
     * // => [2.1, 1.2]
     *
     * // The `_.property` iteratee shorthand.
     * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 1 }, { 'x': 2 }]
     */
    var unionBy = baseRest(function(arrays) {
      var iteratee = last(arrays);
      if (isArrayLikeObject(iteratee)) {
        iteratee = undefined;
      }
      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));
    });

    /**
     * This method is like `_.union` except that it accepts `comparator` which
     * is invoked to compare elements of `arrays`. Result values are chosen from
     * the first array in which the value occurs. The comparator is invoked
     * with two arguments: (arrVal, othVal).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of combined values.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
     *
     * _.unionWith(objects, others, _.isEqual);
     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
     */
    var unionWith = baseRest(function(arrays) {
      var comparator = last(arrays);
      comparator = typeof comparator == 'function' ? comparator : undefined;
      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);
    });

    /**
     * Creates a duplicate-free version of an array, using
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons, in which only the first occurrence of each element
     * is kept. The order of result values is determined by the order they occur
     * in the array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * _.uniq([2, 1, 2]);
     * // => [2, 1]
     */
    function uniq(array) {
      return (array && array.length) ? baseUniq(array) : [];
    }

    /**
     * This method is like `_.uniq` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the criterion by which
     * uniqueness is computed. The order of result values is determined by the
     * order they occur in the array. The iteratee is invoked with one argument:
     * (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * _.uniqBy([2.1, 1.2, 2.3], Math.floor);
     * // => [2.1, 1.2]
     *
     * // The `_.property` iteratee shorthand.
     * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 1 }, { 'x': 2 }]
     */
    function uniqBy(array, iteratee) {
      return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];
    }

    /**
     * This method is like `_.uniq` except that it accepts `comparator` which
     * is invoked to compare elements of `array`. The order of result values is
     * determined by the order they occur in the array.The comparator is invoked
     * with two arguments: (arrVal, othVal).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new duplicate free array.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];
     *
     * _.uniqWith(objects, _.isEqual);
     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]
     */
    function uniqWith(array, comparator) {
      comparator = typeof comparator == 'function' ? comparator : undefined;
      return (array && array.length) ? baseUniq(array, undefined, comparator) : [];
    }

    /**
     * This method is like `_.zip` except that it accepts an array of grouped
     * elements and creates an array regrouping the elements to their pre-zip
     * configuration.
     *
     * @static
     * @memberOf _
     * @since 1.2.0
     * @category Array
     * @param {Array} array The array of grouped elements to process.
     * @returns {Array} Returns the new array of regrouped elements.
     * @example
     *
     * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);
     * // => [['a', 1, true], ['b', 2, false]]
     *
     * _.unzip(zipped);
     * // => [['a', 'b'], [1, 2], [true, false]]
     */
    function unzip(array) {
      if (!(array && array.length)) {
        return [];
      }
      var length = 0;
      array = arrayFilter(array, function(group) {
        if (isArrayLikeObject(group)) {
          length = nativeMax(group.length, length);
          return true;
        }
      });
      return baseTimes(length, function(index) {
        return arrayMap(array, baseProperty(index));
      });
    }

    /**
     * This method is like `_.unzip` except that it accepts `iteratee` to specify
     * how regrouped values should be combined. The iteratee is invoked with the
     * elements of each group: (...group).
     *
     * @static
     * @memberOf _
     * @since 3.8.0
     * @category Array
     * @param {Array} array The array of grouped elements to process.
     * @param {Function} [iteratee=_.identity] The function to combine
     *  regrouped values.
     * @returns {Array} Returns the new array of regrouped elements.
     * @example
     *
     * var zipped = _.zip([1, 2], [10, 20], [100, 200]);
     * // => [[1, 10, 100], [2, 20, 200]]
     *
     * _.unzipWith(zipped, _.add);
     * // => [3, 30, 300]
     */
    function unzipWith(array, iteratee) {
      if (!(array && array.length)) {
        return [];
      }
      var result = unzip(array);
      if (iteratee == null) {
        return result;
      }
      return arrayMap(result, function(group) {
        return apply(iteratee, undefined, group);
      });
    }

    /**
     * Creates an array excluding all given values using
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * for equality comparisons.
     *
     * **Note:** Unlike `_.pull`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...*} [values] The values to exclude.
     * @returns {Array} Returns the new array of filtered values.
     * @see _.difference, _.xor
     * @example
     *
     * _.without([2, 1, 2, 3], 1, 2);
     * // => [3]
     */
    var without = baseRest(function(array, values) {
      return isArrayLikeObject(array)
        ? baseDifference(array, values)
        : [];
    });

    /**
     * Creates an array of unique values that is the
     * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)
     * of the given arrays. The order of result values is determined by the order
     * they occur in the arrays.
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @returns {Array} Returns the new array of filtered values.
     * @see _.difference, _.without
     * @example
     *
     * _.xor([2, 1], [2, 3]);
     * // => [1, 3]
     */
    var xor = baseRest(function(arrays) {
      return baseXor(arrayFilter(arrays, isArrayLikeObject));
    });

    /**
     * This method is like `_.xor` except that it accepts `iteratee` which is
     * invoked for each element of each `arrays` to generate the criterion by
     * which by which they're compared. The order of result values is determined
     * by the order they occur in the arrays. The iteratee is invoked with one
     * argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);
     * // => [1.2, 3.4]
     *
     * // The `_.property` iteratee shorthand.
     * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 2 }]
     */
    var xorBy = baseRest(function(arrays) {
      var iteratee = last(arrays);
      if (isArrayLikeObject(iteratee)) {
        iteratee = undefined;
      }
      return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));
    });

    /**
     * This method is like `_.xor` except that it accepts `comparator` which is
     * invoked to compare elements of `arrays`. The order of result values is
     * determined by the order they occur in the arrays. The comparator is invoked
     * with two arguments: (arrVal, othVal).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @param {Function} [comparator] The comparator invoked per element.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
     *
     * _.xorWith(objects, others, _.isEqual);
     * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
     */
    var xorWith = baseRest(function(arrays) {
      var comparator = last(arrays);
      comparator = typeof comparator == 'function' ? comparator : undefined;
      return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);
    });

    /**
     * Creates an array of grouped elements, the first of which contains the
     * first elements of the given arrays, the second of which contains the
     * second elements of the given arrays, and so on.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Array
     * @param {...Array} [arrays] The arrays to process.
     * @returns {Array} Returns the new array of grouped elements.
     * @example
     *
     * _.zip(['a', 'b'], [1, 2], [true, false]);
     * // => [['a', 1, true], ['b', 2, false]]
     */
    var zip = baseRest(unzip);

    /**
     * This method is like `_.fromPairs` except that it accepts two arrays,
     * one of property identifiers and one of corresponding values.
     *
     * @static
     * @memberOf _
     * @since 0.4.0
     * @category Array
     * @param {Array} [props=[]] The property identifiers.
     * @param {Array} [values=[]] The property values.
     * @returns {Object} Returns the new object.
     * @example
     *
     * _.zipObject(['a', 'b'], [1, 2]);
     * // => { 'a': 1, 'b': 2 }
     */
    function zipObject(props, values) {
      return baseZipObject(props || [], values || [], assignValue);
    }

    /**
     * This method is like `_.zipObject` except that it supports property paths.
     *
     * @static
     * @memberOf _
     * @since 4.1.0
     * @category Array
     * @param {Array} [props=[]] The property identifiers.
     * @param {Array} [values=[]] The property values.
     * @returns {Object} Returns the new object.
     * @example
     *
     * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);
     * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }
     */
    function zipObjectDeep(props, values) {
      return baseZipObject(props || [], values || [], baseSet);
    }

    /**
     * This method is like `_.zip` except that it accepts `iteratee` to specify
     * how grouped values should be combined. The iteratee is invoked with the
     * elements of each group: (...group).
     *
     * @static
     * @memberOf _
     * @since 3.8.0
     * @category Array
     * @param {...Array} [arrays] The arrays to process.
     * @param {Function} [iteratee=_.identity] The function to combine
     *  grouped values.
     * @returns {Array} Returns the new array of grouped elements.
     * @example
     *
     * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {
     *   return a + b + c;
     * });
     * // => [111, 222]
     */
    var zipWith = baseRest(function(arrays) {
      var length = arrays.length,
          iteratee = length > 1 ? arrays[length - 1] : undefined;

      iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;
      return unzipWith(arrays, iteratee);
    });

    /*------------------------------------------------------------------------*/

    /**
     * Creates a `lodash` wrapper instance that wraps `value` with explicit method
     * chain sequences enabled. The result of such sequences must be unwrapped
     * with `_#value`.
     *
     * @static
     * @memberOf _
     * @since 1.3.0
     * @category Seq
     * @param {*} value The value to wrap.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36 },
     *   { 'user': 'fred',    'age': 40 },
     *   { 'user': 'pebbles', 'age': 1 }
     * ];
     *
     * var youngest = _
     *   .chain(users)
     *   .sortBy('age')
     *   .map(function(o) {
     *     return o.user + ' is ' + o.age;
     *   })
     *   .head()
     *   .value();
     * // => 'pebbles is 1'
     */
    function chain(value) {
      var result = lodash(value);
      result.__chain__ = true;
      return result;
    }

    /**
     * This method invokes `interceptor` and returns `value`. The interceptor
     * is invoked with one argument; (value). The purpose of this method is to
     * "tap into" a method chain sequence in order to modify intermediate results.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Seq
     * @param {*} value The value to provide to `interceptor`.
     * @param {Function} interceptor The function to invoke.
     * @returns {*} Returns `value`.
     * @example
     *
     * _([1, 2, 3])
     *  .tap(function(array) {
     *    // Mutate input array.
     *    array.pop();
     *  })
     *  .reverse()
     *  .value();
     * // => [2, 1]
     */
    function tap(value, interceptor) {
      interceptor(value);
      return value;
    }

    /**
     * This method is like `_.tap` except that it returns the result of `interceptor`.
     * The purpose of this method is to "pass thru" values replacing intermediate
     * results in a method chain sequence.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Seq
     * @param {*} value The value to provide to `interceptor`.
     * @param {Function} interceptor The function to invoke.
     * @returns {*} Returns the result of `interceptor`.
     * @example
     *
     * _('  abc  ')
     *  .chain()
     *  .trim()
     *  .thru(function(value) {
     *    return [value];
     *  })
     *  .value();
     * // => ['abc']
     */
    function thru(value, interceptor) {
      return interceptor(value);
    }

    /**
     * This method is the wrapper version of `_.at`.
     *
     * @name at
     * @memberOf _
     * @since 1.0.0
     * @category Seq
     * @param {...(string|string[])} [paths] The property paths to pick.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
     *
     * _(object).at(['a[0].b.c', 'a[1]']).value();
     * // => [3, 4]
     */
    var wrapperAt = flatRest(function(paths) {
      var length = paths.length,
          start = length ? paths[0] : 0,
          value = this.__wrapped__,
          interceptor = function(object) { return baseAt(object, paths); };

      if (length > 1 || this.__actions__.length ||
          !(value instanceof LazyWrapper) || !isIndex(start)) {
        return this.thru(interceptor);
      }
      value = value.slice(start, +start + (length ? 1 : 0));
      value.__actions__.push({
        'func': thru,
        'args': [interceptor],
        'thisArg': undefined
      });
      return new LodashWrapper(value, this.__chain__).thru(function(array) {
        if (length && !array.length) {
          array.push(undefined);
        }
        return array;
      });
    });

    /**
     * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.
     *
     * @name chain
     * @memberOf _
     * @since 0.1.0
     * @category Seq
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36 },
     *   { 'user': 'fred',   'age': 40 }
     * ];
     *
     * // A sequence without explicit chaining.
     * _(users).head();
     * // => { 'user': 'barney', 'age': 36 }
     *
     * // A sequence with explicit chaining.
     * _(users)
     *   .chain()
     *   .head()
     *   .pick('user')
     *   .value();
     * // => { 'user': 'barney' }
     */
    function wrapperChain() {
      return chain(this);
    }

    /**
     * Executes the chain sequence and returns the wrapped result.
     *
     * @name commit
     * @memberOf _
     * @since 3.2.0
     * @category Seq
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var array = [1, 2];
     * var wrapped = _(array).push(3);
     *
     * console.log(array);
     * // => [1, 2]
     *
     * wrapped = wrapped.commit();
     * console.log(array);
     * // => [1, 2, 3]
     *
     * wrapped.last();
     * // => 3
     *
     * console.log(array);
     * // => [1, 2, 3]
     */
    function wrapperCommit() {
      return new LodashWrapper(this.value(), this.__chain__);
    }

    /**
     * Gets the next value on a wrapped object following the
     * [iterator protocol](https://mdn.io/iteration_protocols#iterator).
     *
     * @name next
     * @memberOf _
     * @since 4.0.0
     * @category Seq
     * @returns {Object} Returns the next iterator value.
     * @example
     *
     * var wrapped = _([1, 2]);
     *
     * wrapped.next();
     * // => { 'done': false, 'value': 1 }
     *
     * wrapped.next();
     * // => { 'done': false, 'value': 2 }
     *
     * wrapped.next();
     * // => { 'done': true, 'value': undefined }
     */
    function wrapperNext() {
      if (this.__values__ === undefined) {
        this.__values__ = toArray(this.value());
      }
      var done = this.__index__ >= this.__values__.length,
          value = done ? undefined : this.__values__[this.__index__++];

      return { 'done': done, 'value': value };
    }

    /**
     * Enables the wrapper to be iterable.
     *
     * @name Symbol.iterator
     * @memberOf _
     * @since 4.0.0
     * @category Seq
     * @returns {Object} Returns the wrapper object.
     * @example
     *
     * var wrapped = _([1, 2]);
     *
     * wrapped[Symbol.iterator]() === wrapped;
     * // => true
     *
     * Array.from(wrapped);
     * // => [1, 2]
     */
    function wrapperToIterator() {
      return this;
    }

    /**
     * Creates a clone of the chain sequence planting `value` as the wrapped value.
     *
     * @name plant
     * @memberOf _
     * @since 3.2.0
     * @category Seq
     * @param {*} value The value to plant.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var wrapped = _([1, 2]).map(square);
     * var other = wrapped.plant([3, 4]);
     *
     * other.value();
     * // => [9, 16]
     *
     * wrapped.value();
     * // => [1, 4]
     */
    function wrapperPlant(value) {
      var result,
          parent = this;

      while (parent instanceof baseLodash) {
        var clone = wrapperClone(parent);
        clone.__index__ = 0;
        clone.__values__ = undefined;
        if (result) {
          previous.__wrapped__ = clone;
        } else {
          result = clone;
        }
        var previous = clone;
        parent = parent.__wrapped__;
      }
      previous.__wrapped__ = value;
      return result;
    }

    /**
     * This method is the wrapper version of `_.reverse`.
     *
     * **Note:** This method mutates the wrapped array.
     *
     * @name reverse
     * @memberOf _
     * @since 0.1.0
     * @category Seq
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var array = [1, 2, 3];
     *
     * _(array).reverse().value()
     * // => [3, 2, 1]
     *
     * console.log(array);
     * // => [3, 2, 1]
     */
    function wrapperReverse() {
      var value = this.__wrapped__;
      if (value instanceof LazyWrapper) {
        var wrapped = value;
        if (this.__actions__.length) {
          wrapped = new LazyWrapper(this);
        }
        wrapped = wrapped.reverse();
        wrapped.__actions__.push({
          'func': thru,
          'args': [reverse],
          'thisArg': undefined
        });
        return new LodashWrapper(wrapped, this.__chain__);
      }
      return this.thru(reverse);
    }

    /**
     * Executes the chain sequence to resolve the unwrapped value.
     *
     * @name value
     * @memberOf _
     * @since 0.1.0
     * @alias toJSON, valueOf
     * @category Seq
     * @returns {*} Returns the resolved unwrapped value.
     * @example
     *
     * _([1, 2, 3]).value();
     * // => [1, 2, 3]
     */
    function wrapperValue() {
      return baseWrapperValue(this.__wrapped__, this.__actions__);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of `collection` thru `iteratee`. The corresponding value of
     * each key is the number of times the key was returned by `iteratee`. The
     * iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 0.5.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * _.countBy([6.1, 4.2, 6.3], Math.floor);
     * // => { '4': 1, '6': 2 }
     *
     * // The `_.property` iteratee shorthand.
     * _.countBy(['one', 'two', 'three'], 'length');
     * // => { '3': 2, '5': 1 }
     */
    var countBy = createAggregator(function(result, value, key) {
      if (hasOwnProperty.call(result, key)) {
        ++result[key];
      } else {
        baseAssignValue(result, key, 1);
      }
    });

    /**
     * Checks if `predicate` returns truthy for **all** elements of `collection`.
     * Iteration is stopped once `predicate` returns falsey. The predicate is
     * invoked with three arguments: (value, index|key, collection).
     *
     * **Note:** This method returns `true` for
     * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because
     * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of
     * elements of empty collections.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {boolean} Returns `true` if all elements pass the predicate check,
     *  else `false`.
     * @example
     *
     * _.every([true, 1, null, 'yes'], Boolean);
     * // => false
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': false },
     *   { 'user': 'fred',   'age': 40, 'active': false }
     * ];
     *
     * // The `_.matches` iteratee shorthand.
     * _.every(users, { 'user': 'barney', 'active': false });
     * // => false
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.every(users, ['active', false]);
     * // => true
     *
     * // The `_.property` iteratee shorthand.
     * _.every(users, 'active');
     * // => false
     */
    function every(collection, predicate, guard) {
      var func = isArray(collection) ? arrayEvery : baseEvery;
      if (guard && isIterateeCall(collection, predicate, guard)) {
        predicate = undefined;
      }
      return func(collection, getIteratee(predicate, 3));
    }

    /**
     * Iterates over elements of `collection`, returning an array of all elements
     * `predicate` returns truthy for. The predicate is invoked with three
     * arguments: (value, index|key, collection).
     *
     * **Note:** Unlike `_.remove`, this method returns a new array.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new filtered array.
     * @see _.reject
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': true },
     *   { 'user': 'fred',   'age': 40, 'active': false }
     * ];
     *
     * _.filter(users, function(o) { return !o.active; });
     * // => objects for ['fred']
     *
     * // The `_.matches` iteratee shorthand.
     * _.filter(users, { 'age': 36, 'active': true });
     * // => objects for ['barney']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.filter(users, ['active', false]);
     * // => objects for ['fred']
     *
     * // The `_.property` iteratee shorthand.
     * _.filter(users, 'active');
     * // => objects for ['barney']
     */
    function filter(collection, predicate) {
      var func = isArray(collection) ? arrayFilter : baseFilter;
      return func(collection, getIteratee(predicate, 3));
    }

    /**
     * Iterates over elements of `collection`, returning the first element
     * `predicate` returns truthy for. The predicate is invoked with three
     * arguments: (value, index|key, collection).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param {number} [fromIndex=0] The index to search from.
     * @returns {*} Returns the matched element, else `undefined`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36, 'active': true },
     *   { 'user': 'fred',    'age': 40, 'active': false },
     *   { 'user': 'pebbles', 'age': 1,  'active': true }
     * ];
     *
     * _.find(users, function(o) { return o.age < 40; });
     * // => object for 'barney'
     *
     * // The `_.matches` iteratee shorthand.
     * _.find(users, { 'age': 1, 'active': true });
     * // => object for 'pebbles'
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.find(users, ['active', false]);
     * // => object for 'fred'
     *
     * // The `_.property` iteratee shorthand.
     * _.find(users, 'active');
     * // => object for 'barney'
     */
    var find = createFind(findIndex);

    /**
     * This method is like `_.find` except that it iterates over elements of
     * `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param {number} [fromIndex=collection.length-1] The index to search from.
     * @returns {*} Returns the matched element, else `undefined`.
     * @example
     *
     * _.findLast([1, 2, 3, 4], function(n) {
     *   return n % 2 == 1;
     * });
     * // => 3
     */
    var findLast = createFind(findLastIndex);

    /**
     * Creates a flattened array of values by running each element in `collection`
     * thru `iteratee` and flattening the mapped results. The iteratee is invoked
     * with three arguments: (value, index|key, collection).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * function duplicate(n) {
     *   return [n, n];
     * }
     *
     * _.flatMap([1, 2], duplicate);
     * // => [1, 1, 2, 2]
     */
    function flatMap(collection, iteratee) {
      return baseFlatten(map(collection, iteratee), 1);
    }

    /**
     * This method is like `_.flatMap` except that it recursively flattens the
     * mapped results.
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * function duplicate(n) {
     *   return [[[n, n]]];
     * }
     *
     * _.flatMapDeep([1, 2], duplicate);
     * // => [1, 1, 2, 2]
     */
    function flatMapDeep(collection, iteratee) {
      return baseFlatten(map(collection, iteratee), INFINITY);
    }

    /**
     * This method is like `_.flatMap` except that it recursively flattens the
     * mapped results up to `depth` times.
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {number} [depth=1] The maximum recursion depth.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * function duplicate(n) {
     *   return [[[n, n]]];
     * }
     *
     * _.flatMapDepth([1, 2], duplicate, 2);
     * // => [[1, 1], [2, 2]]
     */
    function flatMapDepth(collection, iteratee, depth) {
      depth = depth === undefined ? 1 : toInteger(depth);
      return baseFlatten(map(collection, iteratee), depth);
    }

    /**
     * Iterates over elements of `collection` and invokes `iteratee` for each element.
     * The iteratee is invoked with three arguments: (value, index|key, collection).
     * Iteratee functions may exit iteration early by explicitly returning `false`.
     *
     * **Note:** As with other "Collections" methods, objects with a "length"
     * property are iterated like arrays. To avoid this behavior use `_.forIn`
     * or `_.forOwn` for object iteration.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @alias each
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array|Object} Returns `collection`.
     * @see _.forEachRight
     * @example
     *
     * _.forEach([1, 2], function(value) {
     *   console.log(value);
     * });
     * // => Logs `1` then `2`.
     *
     * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'a' then 'b' (iteration order is not guaranteed).
     */
    function forEach(collection, iteratee) {
      var func = isArray(collection) ? arrayEach : baseEach;
      return func(collection, getIteratee(iteratee, 3));
    }

    /**
     * This method is like `_.forEach` except that it iterates over elements of
     * `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @alias eachRight
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array|Object} Returns `collection`.
     * @see _.forEach
     * @example
     *
     * _.forEachRight([1, 2], function(value) {
     *   console.log(value);
     * });
     * // => Logs `2` then `1`.
     */
    function forEachRight(collection, iteratee) {
      var func = isArray(collection) ? arrayEachRight : baseEachRight;
      return func(collection, getIteratee(iteratee, 3));
    }

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of `collection` thru `iteratee`. The order of grouped values
     * is determined by the order they occur in `collection`. The corresponding
     * value of each key is an array of elements responsible for generating the
     * key. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * _.groupBy([6.1, 4.2, 6.3], Math.floor);
     * // => { '4': [4.2], '6': [6.1, 6.3] }
     *
     * // The `_.property` iteratee shorthand.
     * _.groupBy(['one', 'two', 'three'], 'length');
     * // => { '3': ['one', 'two'], '5': ['three'] }
     */
    var groupBy = createAggregator(function(result, value, key) {
      if (hasOwnProperty.call(result, key)) {
        result[key].push(value);
      } else {
        baseAssignValue(result, key, [value]);
      }
    });

    /**
     * Checks if `value` is in `collection`. If `collection` is a string, it's
     * checked for a substring of `value`, otherwise
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * is used for equality comparisons. If `fromIndex` is negative, it's used as
     * the offset from the end of `collection`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object|string} collection The collection to inspect.
     * @param {*} value The value to search for.
     * @param {number} [fromIndex=0] The index to search from.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
     * @returns {boolean} Returns `true` if `value` is found, else `false`.
     * @example
     *
     * _.includes([1, 2, 3], 1);
     * // => true
     *
     * _.includes([1, 2, 3], 1, 2);
     * // => false
     *
     * _.includes({ 'a': 1, 'b': 2 }, 1);
     * // => true
     *
     * _.includes('abcd', 'bc');
     * // => true
     */
    function includes(collection, value, fromIndex, guard) {
      collection = isArrayLike(collection) ? collection : values(collection);
      fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;

      var length = collection.length;
      if (fromIndex < 0) {
        fromIndex = nativeMax(length + fromIndex, 0);
      }
      return isString(collection)
        ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)
        : (!!length && baseIndexOf(collection, value, fromIndex) > -1);
    }

    /**
     * Invokes the method at `path` of each element in `collection`, returning
     * an array of the results of each invoked method. Any additional arguments
     * are provided to each invoked method. If `path` is a function, it's invoked
     * for, and `this` bound to, each element in `collection`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Array|Function|string} path The path of the method to invoke or
     *  the function invoked per iteration.
     * @param {...*} [args] The arguments to invoke each method with.
     * @returns {Array} Returns the array of results.
     * @example
     *
     * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');
     * // => [[1, 5, 7], [1, 2, 3]]
     *
     * _.invokeMap([123, 456], String.prototype.split, '');
     * // => [['1', '2', '3'], ['4', '5', '6']]
     */
    var invokeMap = baseRest(function(collection, path, args) {
      var index = -1,
          isFunc = typeof path == 'function',
          result = isArrayLike(collection) ? Array(collection.length) : [];

      baseEach(collection, function(value) {
        result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);
      });
      return result;
    });

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of `collection` thru `iteratee`. The corresponding value of
     * each key is the last element responsible for generating the key. The
     * iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * var array = [
     *   { 'dir': 'left', 'code': 97 },
     *   { 'dir': 'right', 'code': 100 }
     * ];
     *
     * _.keyBy(array, function(o) {
     *   return String.fromCharCode(o.code);
     * });
     * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
     *
     * _.keyBy(array, 'dir');
     * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
     */
    var keyBy = createAggregator(function(result, value, key) {
      baseAssignValue(result, key, value);
    });

    /**
     * Creates an array of values by running each element in `collection` thru
     * `iteratee`. The iteratee is invoked with three arguments:
     * (value, index|key, collection).
     *
     * Many lodash methods are guarded to work as iteratees for methods like
     * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.
     *
     * The guarded methods are:
     * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,
     * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,
     * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,
     * `template`, `trim`, `trimEnd`, `trimStart`, and `words`
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new mapped array.
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * _.map([4, 8], square);
     * // => [16, 64]
     *
     * _.map({ 'a': 4, 'b': 8 }, square);
     * // => [16, 64] (iteration order is not guaranteed)
     *
     * var users = [
     *   { 'user': 'barney' },
     *   { 'user': 'fred' }
     * ];
     *
     * // The `_.property` iteratee shorthand.
     * _.map(users, 'user');
     * // => ['barney', 'fred']
     */
    function map(collection, iteratee) {
      var func = isArray(collection) ? arrayMap : baseMap;
      return func(collection, getIteratee(iteratee, 3));
    }

    /**
     * This method is like `_.sortBy` except that it allows specifying the sort
     * orders of the iteratees to sort by. If `orders` is unspecified, all values
     * are sorted in ascending order. Otherwise, specify an order of "desc" for
     * descending or "asc" for ascending sort order of corresponding values.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]
     *  The iteratees to sort by.
     * @param {string[]} [orders] The sort orders of `iteratees`.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
     * @returns {Array} Returns the new sorted array.
     * @example
     *
     * var users = [
     *   { 'user': 'fred',   'age': 48 },
     *   { 'user': 'barney', 'age': 34 },
     *   { 'user': 'fred',   'age': 40 },
     *   { 'user': 'barney', 'age': 36 }
     * ];
     *
     * // Sort by `user` in ascending order and by `age` in descending order.
     * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);
     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
     */
    function orderBy(collection, iteratees, orders, guard) {
      if (collection == null) {
        return [];
      }
      if (!isArray(iteratees)) {
        iteratees = iteratees == null ? [] : [iteratees];
      }
      orders = guard ? undefined : orders;
      if (!isArray(orders)) {
        orders = orders == null ? [] : [orders];
      }
      return baseOrderBy(collection, iteratees, orders);
    }

    /**
     * Creates an array of elements split into two groups, the first of which
     * contains elements `predicate` returns truthy for, the second of which
     * contains elements `predicate` returns falsey for. The predicate is
     * invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the array of grouped elements.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36, 'active': false },
     *   { 'user': 'fred',    'age': 40, 'active': true },
     *   { 'user': 'pebbles', 'age': 1,  'active': false }
     * ];
     *
     * _.partition(users, function(o) { return o.active; });
     * // => objects for [['fred'], ['barney', 'pebbles']]
     *
     * // The `_.matches` iteratee shorthand.
     * _.partition(users, { 'age': 1, 'active': false });
     * // => objects for [['pebbles'], ['barney', 'fred']]
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.partition(users, ['active', false]);
     * // => objects for [['barney', 'pebbles'], ['fred']]
     *
     * // The `_.property` iteratee shorthand.
     * _.partition(users, 'active');
     * // => objects for [['fred'], ['barney', 'pebbles']]
     */
    var partition = createAggregator(function(result, value, key) {
      result[key ? 0 : 1].push(value);
    }, function() { return [[], []]; });

    /**
     * Reduces `collection` to a value which is the accumulated result of running
     * each element in `collection` thru `iteratee`, where each successive
     * invocation is supplied the return value of the previous. If `accumulator`
     * is not given, the first element of `collection` is used as the initial
     * value. The iteratee is invoked with four arguments:
     * (accumulator, value, index|key, collection).
     *
     * Many lodash methods are guarded to work as iteratees for methods like
     * `_.reduce`, `_.reduceRight`, and `_.transform`.
     *
     * The guarded methods are:
     * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,
     * and `sortBy`
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [accumulator] The initial value.
     * @returns {*} Returns the accumulated value.
     * @see _.reduceRight
     * @example
     *
     * _.reduce([1, 2], function(sum, n) {
     *   return sum + n;
     * }, 0);
     * // => 3
     *
     * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
     *   (result[value] || (result[value] = [])).push(key);
     *   return result;
     * }, {});
     * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)
     */
    function reduce(collection, iteratee, accumulator) {
      var func = isArray(collection) ? arrayReduce : baseReduce,
          initAccum = arguments.length < 3;

      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);
    }

    /**
     * This method is like `_.reduce` except that it iterates over elements of
     * `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [accumulator] The initial value.
     * @returns {*} Returns the accumulated value.
     * @see _.reduce
     * @example
     *
     * var array = [[0, 1], [2, 3], [4, 5]];
     *
     * _.reduceRight(array, function(flattened, other) {
     *   return flattened.concat(other);
     * }, []);
     * // => [4, 5, 2, 3, 0, 1]
     */
    function reduceRight(collection, iteratee, accumulator) {
      var func = isArray(collection) ? arrayReduceRight : baseReduce,
          initAccum = arguments.length < 3;

      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);
    }

    /**
     * The opposite of `_.filter`; this method returns the elements of `collection`
     * that `predicate` does **not** return truthy for.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the new filtered array.
     * @see _.filter
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': false },
     *   { 'user': 'fred',   'age': 40, 'active': true }
     * ];
     *
     * _.reject(users, function(o) { return !o.active; });
     * // => objects for ['fred']
     *
     * // The `_.matches` iteratee shorthand.
     * _.reject(users, { 'age': 40, 'active': true });
     * // => objects for ['barney']
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.reject(users, ['active', false]);
     * // => objects for ['fred']
     *
     * // The `_.property` iteratee shorthand.
     * _.reject(users, 'active');
     * // => objects for ['barney']
     */
    function reject(collection, predicate) {
      var func = isArray(collection) ? arrayFilter : baseFilter;
      return func(collection, negate(getIteratee(predicate, 3)));
    }

    /**
     * Gets a random element from `collection`.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to sample.
     * @returns {*} Returns the random element.
     * @example
     *
     * _.sample([1, 2, 3, 4]);
     * // => 2
     */
    function sample(collection) {
      var func = isArray(collection) ? arraySample : baseSample;
      return func(collection);
    }

    /**
     * Gets `n` random elements at unique keys from `collection` up to the
     * size of `collection`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Collection
     * @param {Array|Object} collection The collection to sample.
     * @param {number} [n=1] The number of elements to sample.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the random elements.
     * @example
     *
     * _.sampleSize([1, 2, 3], 2);
     * // => [3, 1]
     *
     * _.sampleSize([1, 2, 3], 4);
     * // => [2, 3, 1]
     */
    function sampleSize(collection, n, guard) {
      if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {
        n = 1;
      } else {
        n = toInteger(n);
      }
      var func = isArray(collection) ? arraySampleSize : baseSampleSize;
      return func(collection, n);
    }

    /**
     * Creates an array of shuffled values, using a version of the
     * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to shuffle.
     * @returns {Array} Returns the new shuffled array.
     * @example
     *
     * _.shuffle([1, 2, 3, 4]);
     * // => [4, 1, 3, 2]
     */
    function shuffle(collection) {
      var func = isArray(collection) ? arrayShuffle : baseShuffle;
      return func(collection);
    }

    /**
     * Gets the size of `collection` by returning its length for array-like
     * values or the number of own enumerable string keyed properties for objects.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object|string} collection The collection to inspect.
     * @returns {number} Returns the collection size.
     * @example
     *
     * _.size([1, 2, 3]);
     * // => 3
     *
     * _.size({ 'a': 1, 'b': 2 });
     * // => 2
     *
     * _.size('pebbles');
     * // => 7
     */
    function size(collection) {
      if (collection == null) {
        return 0;
      }
      if (isArrayLike(collection)) {
        return isString(collection) ? stringSize(collection) : collection.length;
      }
      var tag = getTag(collection);
      if (tag == mapTag || tag == setTag) {
        return collection.size;
      }
      return baseKeys(collection).length;
    }

    /**
     * Checks if `predicate` returns truthy for **any** element of `collection`.
     * Iteration is stopped once `predicate` returns truthy. The predicate is
     * invoked with three arguments: (value, index|key, collection).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {boolean} Returns `true` if any element passes the predicate check,
     *  else `false`.
     * @example
     *
     * _.some([null, 0, 'yes', false], Boolean);
     * // => true
     *
     * var users = [
     *   { 'user': 'barney', 'active': true },
     *   { 'user': 'fred',   'active': false }
     * ];
     *
     * // The `_.matches` iteratee shorthand.
     * _.some(users, { 'user': 'barney', 'active': false });
     * // => false
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.some(users, ['active', false]);
     * // => true
     *
     * // The `_.property` iteratee shorthand.
     * _.some(users, 'active');
     * // => true
     */
    function some(collection, predicate, guard) {
      var func = isArray(collection) ? arraySome : baseSome;
      if (guard && isIterateeCall(collection, predicate, guard)) {
        predicate = undefined;
      }
      return func(collection, getIteratee(predicate, 3));
    }

    /**
     * Creates an array of elements, sorted in ascending order by the results of
     * running each element in a collection thru each iteratee. This method
     * performs a stable sort, that is, it preserves the original sort order of
     * equal elements. The iteratees are invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Collection
     * @param {Array|Object} collection The collection to iterate over.
     * @param {...(Function|Function[])} [iteratees=[_.identity]]
     *  The iteratees to sort by.
     * @returns {Array} Returns the new sorted array.
     * @example
     *
     * var users = [
     *   { 'user': 'fred',   'age': 48 },
     *   { 'user': 'barney', 'age': 36 },
     *   { 'user': 'fred',   'age': 40 },
     *   { 'user': 'barney', 'age': 34 }
     * ];
     *
     * _.sortBy(users, [function(o) { return o.user; }]);
     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
     *
     * _.sortBy(users, ['user', 'age']);
     * // => objects for [['barney', 34], ['barney', 36], ['fred', 40], ['fred', 48]]
     */
    var sortBy = baseRest(function(collection, iteratees) {
      if (collection == null) {
        return [];
      }
      var length = iteratees.length;
      if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {
        iteratees = [];
      } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {
        iteratees = [iteratees[0]];
      }
      return baseOrderBy(collection, baseFlatten(iteratees, 1), []);
    });

    /*------------------------------------------------------------------------*/

    /**
     * Gets the timestamp of the number of milliseconds that have elapsed since
     * the Unix epoch (1 January 1970 00:00:00 UTC).
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Date
     * @returns {number} Returns the timestamp.
     * @example
     *
     * _.defer(function(stamp) {
     *   console.log(_.now() - stamp);
     * }, _.now());
     * // => Logs the number of milliseconds it took for the deferred invocation.
     */
    var now = ctxNow || function() {
      return root.Date.now();
    };

    /*------------------------------------------------------------------------*/

    /**
     * The opposite of `_.before`; this method creates a function that invokes
     * `func` once it's called `n` or more times.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {number} n The number of calls before `func` is invoked.
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * var saves = ['profile', 'settings'];
     *
     * var done = _.after(saves.length, function() {
     *   console.log('done saving!');
     * });
     *
     * _.forEach(saves, function(type) {
     *   asyncSave({ 'type': type, 'complete': done });
     * });
     * // => Logs 'done saving!' after the two async saves have completed.
     */
    function after(n, func) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      n = toInteger(n);
      return function() {
        if (--n < 1) {
          return func.apply(this, arguments);
        }
      };
    }

    /**
     * Creates a function that invokes `func`, with up to `n` arguments,
     * ignoring any additional arguments.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {Function} func The function to cap arguments for.
     * @param {number} [n=func.length] The arity cap.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Function} Returns the new capped function.
     * @example
     *
     * _.map(['6', '8', '10'], _.ary(parseInt, 1));
     * // => [6, 8, 10]
     */
    function ary(func, n, guard) {
      n = guard ? undefined : n;
      n = (func && n == null) ? func.length : n;
      return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);
    }

    /**
     * Creates a function that invokes `func`, with the `this` binding and arguments
     * of the created function, while it's called less than `n` times. Subsequent
     * calls to the created function return the result of the last `func` invocation.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {number} n The number of calls at which `func` is no longer invoked.
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * jQuery(element).on('click', _.before(5, addContactToList));
     * // => Allows adding up to 4 contacts to the list.
     */
    function before(n, func) {
      var result;
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      n = toInteger(n);
      return function() {
        if (--n > 0) {
          result = func.apply(this, arguments);
        }
        if (n <= 1) {
          func = undefined;
        }
        return result;
      };
    }

    /**
     * Creates a function that invokes `func` with the `this` binding of `thisArg`
     * and `partials` prepended to the arguments it receives.
     *
     * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,
     * may be used as a placeholder for partially applied arguments.
     *
     * **Note:** Unlike native `Function#bind`, this method doesn't set the "length"
     * property of bound functions.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to bind.
     * @param {*} thisArg The `this` binding of `func`.
     * @param {...*} [partials] The arguments to be partially applied.
     * @returns {Function} Returns the new bound function.
     * @example
     *
     * function greet(greeting, punctuation) {
     *   return greeting + ' ' + this.user + punctuation;
     * }
     *
     * var object = { 'user': 'fred' };
     *
     * var bound = _.bind(greet, object, 'hi');
     * bound('!');
     * // => 'hi fred!'
     *
     * // Bound with placeholders.
     * var bound = _.bind(greet, object, _, '!');
     * bound('hi');
     * // => 'hi fred!'
     */
    var bind = baseRest(function(func, thisArg, partials) {
      var bitmask = WRAP_BIND_FLAG;
      if (partials.length) {
        var holders = replaceHolders(partials, getHolder(bind));
        bitmask |= WRAP_PARTIAL_FLAG;
      }
      return createWrap(func, bitmask, thisArg, partials, holders);
    });

    /**
     * Creates a function that invokes the method at `object[key]` with `partials`
     * prepended to the arguments it receives.
     *
     * This method differs from `_.bind` by allowing bound functions to reference
     * methods that may be redefined or don't yet exist. See
     * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)
     * for more details.
     *
     * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for partially applied arguments.
     *
     * @static
     * @memberOf _
     * @since 0.10.0
     * @category Function
     * @param {Object} object The object to invoke the method on.
     * @param {string} key The key of the method.
     * @param {...*} [partials] The arguments to be partially applied.
     * @returns {Function} Returns the new bound function.
     * @example
     *
     * var object = {
     *   'user': 'fred',
     *   'greet': function(greeting, punctuation) {
     *     return greeting + ' ' + this.user + punctuation;
     *   }
     * };
     *
     * var bound = _.bindKey(object, 'greet', 'hi');
     * bound('!');
     * // => 'hi fred!'
     *
     * object.greet = function(greeting, punctuation) {
     *   return greeting + 'ya ' + this.user + punctuation;
     * };
     *
     * bound('!');
     * // => 'hiya fred!'
     *
     * // Bound with placeholders.
     * var bound = _.bindKey(object, 'greet', _, '!');
     * bound('hi');
     * // => 'hiya fred!'
     */
    var bindKey = baseRest(function(object, key, partials) {
      var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;
      if (partials.length) {
        var holders = replaceHolders(partials, getHolder(bindKey));
        bitmask |= WRAP_PARTIAL_FLAG;
      }
      return createWrap(key, bitmask, object, partials, holders);
    });

    /**
     * Creates a function that accepts arguments of `func` and either invokes
     * `func` returning its result, if at least `arity` number of arguments have
     * been provided, or returns a function that accepts the remaining `func`
     * arguments, and so on. The arity of `func` may be specified if `func.length`
     * is not sufficient.
     *
     * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,
     * may be used as a placeholder for provided arguments.
     *
     * **Note:** This method doesn't set the "length" property of curried functions.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Function
     * @param {Function} func The function to curry.
     * @param {number} [arity=func.length] The arity of `func`.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Function} Returns the new curried function.
     * @example
     *
     * var abc = function(a, b, c) {
     *   return [a, b, c];
     * };
     *
     * var curried = _.curry(abc);
     *
     * curried(1)(2)(3);
     * // => [1, 2, 3]
     *
     * curried(1, 2)(3);
     * // => [1, 2, 3]
     *
     * curried(1, 2, 3);
     * // => [1, 2, 3]
     *
     * // Curried with placeholders.
     * curried(1)(_, 3)(2);
     * // => [1, 2, 3]
     */
    function curry(func, arity, guard) {
      arity = guard ? undefined : arity;
      var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
      result.placeholder = curry.placeholder;
      return result;
    }

    /**
     * This method is like `_.curry` except that arguments are applied to `func`
     * in the manner of `_.partialRight` instead of `_.partial`.
     *
     * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for provided arguments.
     *
     * **Note:** This method doesn't set the "length" property of curried functions.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {Function} func The function to curry.
     * @param {number} [arity=func.length] The arity of `func`.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Function} Returns the new curried function.
     * @example
     *
     * var abc = function(a, b, c) {
     *   return [a, b, c];
     * };
     *
     * var curried = _.curryRight(abc);
     *
     * curried(3)(2)(1);
     * // => [1, 2, 3]
     *
     * curried(2, 3)(1);
     * // => [1, 2, 3]
     *
     * curried(1, 2, 3);
     * // => [1, 2, 3]
     *
     * // Curried with placeholders.
     * curried(3)(1, _)(2);
     * // => [1, 2, 3]
     */
    function curryRight(func, arity, guard) {
      arity = guard ? undefined : arity;
      var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);
      result.placeholder = curryRight.placeholder;
      return result;
    }

    /**
     * Creates a debounced function that delays invoking `func` until after `wait`
     * milliseconds have elapsed since the last time the debounced function was
     * invoked. The debounced function comes with a `cancel` method to cancel
     * delayed `func` invocations and a `flush` method to immediately invoke them.
     * Provide `options` to indicate whether `func` should be invoked on the
     * leading and/or trailing edge of the `wait` timeout. The `func` is invoked
     * with the last arguments provided to the debounced function. Subsequent
     * calls to the debounced function return the result of the last `func`
     * invocation.
     *
     * **Note:** If `leading` and `trailing` options are `true`, `func` is
     * invoked on the trailing edge of the timeout only if the debounced function
     * is invoked more than once during the `wait` timeout.
     *
     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
     * until to the next tick, similar to `setTimeout` with a timeout of `0`.
     *
     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
     * for details over the differences between `_.debounce` and `_.throttle`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to debounce.
     * @param {number} [wait=0] The number of milliseconds to delay.
     * @param {Object} [options={}] The options object.
     * @param {boolean} [options.leading=false]
     *  Specify invoking on the leading edge of the timeout.
     * @param {number} [options.maxWait]
     *  The maximum time `func` is allowed to be delayed before it's invoked.
     * @param {boolean} [options.trailing=true]
     *  Specify invoking on the trailing edge of the timeout.
     * @returns {Function} Returns the new debounced function.
     * @example
     *
     * // Avoid costly calculations while the window size is in flux.
     * jQuery(window).on('resize', _.debounce(calculateLayout, 150));
     *
     * // Invoke `sendMail` when clicked, debouncing subsequent calls.
     * jQuery(element).on('click', _.debounce(sendMail, 300, {
     *   'leading': true,
     *   'trailing': false
     * }));
     *
     * // Ensure `batchLog` is invoked once after 1 second of debounced calls.
     * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });
     * var source = new EventSource('/stream');
     * jQuery(source).on('message', debounced);
     *
     * // Cancel the trailing debounced invocation.
     * jQuery(window).on('popstate', debounced.cancel);
     */
    function debounce(func, wait, options) {
      var lastArgs,
          lastThis,
          maxWait,
          result,
          timerId,
          lastCallTime,
          lastInvokeTime = 0,
          leading = false,
          maxing = false,
          trailing = true;

      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      wait = toNumber(wait) || 0;
      if (isObject(options)) {
        leading = !!options.leading;
        maxing = 'maxWait' in options;
        maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;
        trailing = 'trailing' in options ? !!options.trailing : trailing;
      }

      function invokeFunc(time) {
        var args = lastArgs,
            thisArg = lastThis;

        lastArgs = lastThis = undefined;
        lastInvokeTime = time;
        result = func.apply(thisArg, args);
        return result;
      }

      function leadingEdge(time) {
        // Reset any `maxWait` timer.
        lastInvokeTime = time;
        // Start the timer for the trailing edge.
        timerId = setTimeout(timerExpired, wait);
        // Invoke the leading edge.
        return leading ? invokeFunc(time) : result;
      }

      function remainingWait(time) {
        var timeSinceLastCall = time - lastCallTime,
            timeSinceLastInvoke = time - lastInvokeTime,
            timeWaiting = wait - timeSinceLastCall;

        return maxing
          ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)
          : timeWaiting;
      }

      function shouldInvoke(time) {
        var timeSinceLastCall = time - lastCallTime,
            timeSinceLastInvoke = time - lastInvokeTime;

        // Either this is the first call, activity has stopped and we're at the
        // trailing edge, the system time has gone backwards and we're treating
        // it as the trailing edge, or we've hit the `maxWait` limit.
        return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||
          (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));
      }

      function timerExpired() {
        var time = now();
        if (shouldInvoke(time)) {
          return trailingEdge(time);
        }
        // Restart the timer.
        timerId = setTimeout(timerExpired, remainingWait(time));
      }

      function trailingEdge(time) {
        timerId = undefined;

        // Only invoke if we have `lastArgs` which means `func` has been
        // debounced at least once.
        if (trailing && lastArgs) {
          return invokeFunc(time);
        }
        lastArgs = lastThis = undefined;
        return result;
      }

      function cancel() {
        if (timerId !== undefined) {
          clearTimeout(timerId);
        }
        lastInvokeTime = 0;
        lastArgs = lastCallTime = lastThis = timerId = undefined;
      }

      function flush() {
        return timerId === undefined ? result : trailingEdge(now());
      }

      function debounced() {
        var time = now(),
            isInvoking = shouldInvoke(time);

        lastArgs = arguments;
        lastThis = this;
        lastCallTime = time;

        if (isInvoking) {
          if (timerId === undefined) {
            return leadingEdge(lastCallTime);
          }
          if (maxing) {
            // Handle invocations in a tight loop.
            clearTimeout(timerId);
            timerId = setTimeout(timerExpired, wait);
            return invokeFunc(lastCallTime);
          }
        }
        if (timerId === undefined) {
          timerId = setTimeout(timerExpired, wait);
        }
        return result;
      }
      debounced.cancel = cancel;
      debounced.flush = flush;
      return debounced;
    }

    /**
     * Defers invoking the `func` until the current call stack has cleared. Any
     * additional arguments are provided to `func` when it's invoked.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to defer.
     * @param {...*} [args] The arguments to invoke `func` with.
     * @returns {number} Returns the timer id.
     * @example
     *
     * _.defer(function(text) {
     *   console.log(text);
     * }, 'deferred');
     * // => Logs 'deferred' after one millisecond.
     */
    var defer = baseRest(function(func, args) {
      return baseDelay(func, 1, args);
    });

    /**
     * Invokes `func` after `wait` milliseconds. Any additional arguments are
     * provided to `func` when it's invoked.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to delay.
     * @param {number} wait The number of milliseconds to delay invocation.
     * @param {...*} [args] The arguments to invoke `func` with.
     * @returns {number} Returns the timer id.
     * @example
     *
     * _.delay(function(text) {
     *   console.log(text);
     * }, 1000, 'later');
     * // => Logs 'later' after one second.
     */
    var delay = baseRest(function(func, wait, args) {
      return baseDelay(func, toNumber(wait) || 0, args);
    });

    /**
     * Creates a function that invokes `func` with arguments reversed.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Function
     * @param {Function} func The function to flip arguments for.
     * @returns {Function} Returns the new flipped function.
     * @example
     *
     * var flipped = _.flip(function() {
     *   return _.toArray(arguments);
     * });
     *
     * flipped('a', 'b', 'c', 'd');
     * // => ['d', 'c', 'b', 'a']
     */
    function flip(func) {
      return createWrap(func, WRAP_FLIP_FLAG);
    }

    /**
     * Creates a function that memoizes the result of `func`. If `resolver` is
     * provided, it determines the cache key for storing the result based on the
     * arguments provided to the memoized function. By default, the first argument
     * provided to the memoized function is used as the map cache key. The `func`
     * is invoked with the `this` binding of the memoized function.
     *
     * **Note:** The cache is exposed as the `cache` property on the memoized
     * function. Its creation may be customized by replacing the `_.memoize.Cache`
     * constructor with one whose instances implement the
     * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)
     * method interface of `clear`, `delete`, `get`, `has`, and `set`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to have its output memoized.
     * @param {Function} [resolver] The function to resolve the cache key.
     * @returns {Function} Returns the new memoized function.
     * @example
     *
     * var object = { 'a': 1, 'b': 2 };
     * var other = { 'c': 3, 'd': 4 };
     *
     * var values = _.memoize(_.values);
     * values(object);
     * // => [1, 2]
     *
     * values(other);
     * // => [3, 4]
     *
     * object.a = 2;
     * values(object);
     * // => [1, 2]
     *
     * // Modify the result cache.
     * values.cache.set(object, ['a', 'b']);
     * values(object);
     * // => ['a', 'b']
     *
     * // Replace `_.memoize.Cache`.
     * _.memoize.Cache = WeakMap;
     */
    function memoize(func, resolver) {
      if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      var memoized = function() {
        var args = arguments,
            key = resolver ? resolver.apply(this, args) : args[0],
            cache = memoized.cache;

        if (cache.has(key)) {
          return cache.get(key);
        }
        var result = func.apply(this, args);
        memoized.cache = cache.set(key, result) || cache;
        return result;
      };
      memoized.cache = new (memoize.Cache || MapCache);
      return memoized;
    }

    // Expose `MapCache`.
    memoize.Cache = MapCache;

    /**
     * Creates a function that negates the result of the predicate `func`. The
     * `func` predicate is invoked with the `this` binding and arguments of the
     * created function.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {Function} predicate The predicate to negate.
     * @returns {Function} Returns the new negated function.
     * @example
     *
     * function isEven(n) {
     *   return n % 2 == 0;
     * }
     *
     * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));
     * // => [1, 3, 5]
     */
    function negate(predicate) {
      if (typeof predicate != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      return function() {
        var args = arguments;
        switch (args.length) {
          case 0: return !predicate.call(this);
          case 1: return !predicate.call(this, args[0]);
          case 2: return !predicate.call(this, args[0], args[1]);
          case 3: return !predicate.call(this, args[0], args[1], args[2]);
        }
        return !predicate.apply(this, args);
      };
    }

    /**
     * Creates a function that is restricted to invoking `func` once. Repeat calls
     * to the function return the value of the first invocation. The `func` is
     * invoked with the `this` binding and arguments of the created function.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * var initialize = _.once(createApplication);
     * initialize();
     * initialize();
     * // => `createApplication` is invoked once
     */
    function once(func) {
      return before(2, func);
    }

    /**
     * Creates a function that invokes `func` with its arguments transformed.
     *
     * @static
     * @since 4.0.0
     * @memberOf _
     * @category Function
     * @param {Function} func The function to wrap.
     * @param {...(Function|Function[])} [transforms=[_.identity]]
     *  The argument transforms.
     * @returns {Function} Returns the new function.
     * @example
     *
     * function doubled(n) {
     *   return n * 2;
     * }
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var func = _.overArgs(function(x, y) {
     *   return [x, y];
     * }, [square, doubled]);
     *
     * func(9, 3);
     * // => [81, 6]
     *
     * func(10, 5);
     * // => [100, 10]
     */
    var overArgs = castRest(function(func, transforms) {
      transforms = (transforms.length == 1 && isArray(transforms[0]))
        ? arrayMap(transforms[0], baseUnary(getIteratee()))
        : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));

      var funcsLength = transforms.length;
      return baseRest(function(args) {
        var index = -1,
            length = nativeMin(args.length, funcsLength);

        while (++index < length) {
          args[index] = transforms[index].call(this, args[index]);
        }
        return apply(func, this, args);
      });
    });

    /**
     * Creates a function that invokes `func` with `partials` prepended to the
     * arguments it receives. This method is like `_.bind` except it does **not**
     * alter the `this` binding.
     *
     * The `_.partial.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for partially applied arguments.
     *
     * **Note:** This method doesn't set the "length" property of partially
     * applied functions.
     *
     * @static
     * @memberOf _
     * @since 0.2.0
     * @category Function
     * @param {Function} func The function to partially apply arguments to.
     * @param {...*} [partials] The arguments to be partially applied.
     * @returns {Function} Returns the new partially applied function.
     * @example
     *
     * function greet(greeting, name) {
     *   return greeting + ' ' + name;
     * }
     *
     * var sayHelloTo = _.partial(greet, 'hello');
     * sayHelloTo('fred');
     * // => 'hello fred'
     *
     * // Partially applied with placeholders.
     * var greetFred = _.partial(greet, _, 'fred');
     * greetFred('hi');
     * // => 'hi fred'
     */
    var partial = baseRest(function(func, partials) {
      var holders = replaceHolders(partials, getHolder(partial));
      return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);
    });

    /**
     * This method is like `_.partial` except that partially applied arguments
     * are appended to the arguments it receives.
     *
     * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for partially applied arguments.
     *
     * **Note:** This method doesn't set the "length" property of partially
     * applied functions.
     *
     * @static
     * @memberOf _
     * @since 1.0.0
     * @category Function
     * @param {Function} func The function to partially apply arguments to.
     * @param {...*} [partials] The arguments to be partially applied.
     * @returns {Function} Returns the new partially applied function.
     * @example
     *
     * function greet(greeting, name) {
     *   return greeting + ' ' + name;
     * }
     *
     * var greetFred = _.partialRight(greet, 'fred');
     * greetFred('hi');
     * // => 'hi fred'
     *
     * // Partially applied with placeholders.
     * var sayHelloTo = _.partialRight(greet, 'hello', _);
     * sayHelloTo('fred');
     * // => 'hello fred'
     */
    var partialRight = baseRest(function(func, partials) {
      var holders = replaceHolders(partials, getHolder(partialRight));
      return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);
    });

    /**
     * Creates a function that invokes `func` with arguments arranged according
     * to the specified `indexes` where the argument value at the first index is
     * provided as the first argument, the argument value at the second index is
     * provided as the second argument, and so on.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {Function} func The function to rearrange arguments for.
     * @param {...(number|number[])} indexes The arranged argument indexes.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var rearged = _.rearg(function(a, b, c) {
     *   return [a, b, c];
     * }, [2, 0, 1]);
     *
     * rearged('b', 'c', 'a')
     * // => ['a', 'b', 'c']
     */
    var rearg = flatRest(function(func, indexes) {
      return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);
    });

    /**
     * Creates a function that invokes `func` with the `this` binding of the
     * created function and arguments from `start` and beyond provided as
     * an array.
     *
     * **Note:** This method is based on the
     * [rest parameter](https://mdn.io/rest_parameters).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Function
     * @param {Function} func The function to apply a rest parameter to.
     * @param {number} [start=func.length-1] The start position of the rest parameter.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var say = _.rest(function(what, names) {
     *   return what + ' ' + _.initial(names).join(', ') +
     *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);
     * });
     *
     * say('hello', 'fred', 'barney', 'pebbles');
     * // => 'hello fred, barney, & pebbles'
     */
    function rest(func, start) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      start = start === undefined ? start : toInteger(start);
      return baseRest(func, start);
    }

    /**
     * Creates a function that invokes `func` with the `this` binding of the
     * create function and an array of arguments much like
     * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).
     *
     * **Note:** This method is based on the
     * [spread operator](https://mdn.io/spread_operator).
     *
     * @static
     * @memberOf _
     * @since 3.2.0
     * @category Function
     * @param {Function} func The function to spread arguments over.
     * @param {number} [start=0] The start position of the spread.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var say = _.spread(function(who, what) {
     *   return who + ' says ' + what;
     * });
     *
     * say(['fred', 'hello']);
     * // => 'fred says hello'
     *
     * var numbers = Promise.all([
     *   Promise.resolve(40),
     *   Promise.resolve(36)
     * ]);
     *
     * numbers.then(_.spread(function(x, y) {
     *   return x + y;
     * }));
     * // => a Promise of 76
     */
    function spread(func, start) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      start = start == null ? 0 : nativeMax(toInteger(start), 0);
      return baseRest(function(args) {
        var array = args[start],
            otherArgs = castSlice(args, 0, start);

        if (array) {
          arrayPush(otherArgs, array);
        }
        return apply(func, this, otherArgs);
      });
    }

    /**
     * Creates a throttled function that only invokes `func` at most once per
     * every `wait` milliseconds. The throttled function comes with a `cancel`
     * method to cancel delayed `func` invocations and a `flush` method to
     * immediately invoke them. Provide `options` to indicate whether `func`
     * should be invoked on the leading and/or trailing edge of the `wait`
     * timeout. The `func` is invoked with the last arguments provided to the
     * throttled function. Subsequent calls to the throttled function return the
     * result of the last `func` invocation.
     *
     * **Note:** If `leading` and `trailing` options are `true`, `func` is
     * invoked on the trailing edge of the timeout only if the throttled function
     * is invoked more than once during the `wait` timeout.
     *
     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
     * until to the next tick, similar to `setTimeout` with a timeout of `0`.
     *
     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
     * for details over the differences between `_.throttle` and `_.debounce`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to throttle.
     * @param {number} [wait=0] The number of milliseconds to throttle invocations to.
     * @param {Object} [options={}] The options object.
     * @param {boolean} [options.leading=true]
     *  Specify invoking on the leading edge of the timeout.
     * @param {boolean} [options.trailing=true]
     *  Specify invoking on the trailing edge of the timeout.
     * @returns {Function} Returns the new throttled function.
     * @example
     *
     * // Avoid excessively updating the position while scrolling.
     * jQuery(window).on('scroll', _.throttle(updatePosition, 100));
     *
     * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.
     * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });
     * jQuery(element).on('click', throttled);
     *
     * // Cancel the trailing throttled invocation.
     * jQuery(window).on('popstate', throttled.cancel);
     */
    function throttle(func, wait, options) {
      var leading = true,
          trailing = true;

      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      if (isObject(options)) {
        leading = 'leading' in options ? !!options.leading : leading;
        trailing = 'trailing' in options ? !!options.trailing : trailing;
      }
      return debounce(func, wait, {
        'leading': leading,
        'maxWait': wait,
        'trailing': trailing
      });
    }

    /**
     * Creates a function that accepts up to one argument, ignoring any
     * additional arguments.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Function
     * @param {Function} func The function to cap arguments for.
     * @returns {Function} Returns the new capped function.
     * @example
     *
     * _.map(['6', '8', '10'], _.unary(parseInt));
     * // => [6, 8, 10]
     */
    function unary(func) {
      return ary(func, 1);
    }

    /**
     * Creates a function that provides `value` to `wrapper` as its first
     * argument. Any additional arguments provided to the function are appended
     * to those provided to the `wrapper`. The wrapper is invoked with the `this`
     * binding of the created function.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {*} value The value to wrap.
     * @param {Function} [wrapper=identity] The wrapper function.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var p = _.wrap(_.escape, function(func, text) {
     *   return '<p>' + func(text) + '</p>';
     * });
     *
     * p('fred, barney, & pebbles');
     * // => '<p>fred, barney, &amp; pebbles</p>'
     */
    function wrap(value, wrapper) {
      return partial(castFunction(wrapper), value);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Casts `value` as an array if it's not one.
     *
     * @static
     * @memberOf _
     * @since 4.4.0
     * @category Lang
     * @param {*} value The value to inspect.
     * @returns {Array} Returns the cast array.
     * @example
     *
     * _.castArray(1);
     * // => [1]
     *
     * _.castArray({ 'a': 1 });
     * // => [{ 'a': 1 }]
     *
     * _.castArray('abc');
     * // => ['abc']
     *
     * _.castArray(null);
     * // => [null]
     *
     * _.castArray(undefined);
     * // => [undefined]
     *
     * _.castArray();
     * // => []
     *
     * var array = [1, 2, 3];
     * console.log(_.castArray(array) === array);
     * // => true
     */
    function castArray() {
      if (!arguments.length) {
        return [];
      }
      var value = arguments[0];
      return isArray(value) ? value : [value];
    }

    /**
     * Creates a shallow clone of `value`.
     *
     * **Note:** This method is loosely based on the
     * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)
     * and supports cloning arrays, array buffers, booleans, date objects, maps,
     * numbers, `Object` objects, regexes, sets, strings, symbols, and typed
     * arrays. The own enumerable properties of `arguments` objects are cloned
     * as plain objects. An empty object is returned for uncloneable values such
     * as error objects, functions, DOM nodes, and WeakMaps.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to clone.
     * @returns {*} Returns the cloned value.
     * @see _.cloneDeep
     * @example
     *
     * var objects = [{ 'a': 1 }, { 'b': 2 }];
     *
     * var shallow = _.clone(objects);
     * console.log(shallow[0] === objects[0]);
     * // => true
     */
    function clone(value) {
      return baseClone(value, CLONE_SYMBOLS_FLAG);
    }

    /**
     * This method is like `_.clone` except that it accepts `customizer` which
     * is invoked to produce the cloned value. If `customizer` returns `undefined`,
     * cloning is handled by the method instead. The `customizer` is invoked with
     * up to four arguments; (value [, index|key, object, stack]).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to clone.
     * @param {Function} [customizer] The function to customize cloning.
     * @returns {*} Returns the cloned value.
     * @see _.cloneDeepWith
     * @example
     *
     * function customizer(value) {
     *   if (_.isElement(value)) {
     *     return value.cloneNode(false);
     *   }
     * }
     *
     * var el = _.cloneWith(document.body, customizer);
     *
     * console.log(el === document.body);
     * // => false
     * console.log(el.nodeName);
     * // => 'BODY'
     * console.log(el.childNodes.length);
     * // => 0
     */
    function cloneWith(value, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);
    }

    /**
     * This method is like `_.clone` except that it recursively clones `value`.
     *
     * @static
     * @memberOf _
     * @since 1.0.0
     * @category Lang
     * @param {*} value The value to recursively clone.
     * @returns {*} Returns the deep cloned value.
     * @see _.clone
     * @example
     *
     * var objects = [{ 'a': 1 }, { 'b': 2 }];
     *
     * var deep = _.cloneDeep(objects);
     * console.log(deep[0] === objects[0]);
     * // => false
     */
    function cloneDeep(value) {
      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);
    }

    /**
     * This method is like `_.cloneWith` except that it recursively clones `value`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to recursively clone.
     * @param {Function} [customizer] The function to customize cloning.
     * @returns {*} Returns the deep cloned value.
     * @see _.cloneWith
     * @example
     *
     * function customizer(value) {
     *   if (_.isElement(value)) {
     *     return value.cloneNode(true);
     *   }
     * }
     *
     * var el = _.cloneDeepWith(document.body, customizer);
     *
     * console.log(el === document.body);
     * // => false
     * console.log(el.nodeName);
     * // => 'BODY'
     * console.log(el.childNodes.length);
     * // => 20
     */
    function cloneDeepWith(value, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);
    }

    /**
     * Checks if `object` conforms to `source` by invoking the predicate
     * properties of `source` with the corresponding property values of `object`.
     *
     * **Note:** This method is equivalent to `_.conforms` when `source` is
     * partially applied.
     *
     * @static
     * @memberOf _
     * @since 4.14.0
     * @category Lang
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property predicates to conform to.
     * @returns {boolean} Returns `true` if `object` conforms, else `false`.
     * @example
     *
     * var object = { 'a': 1, 'b': 2 };
     *
     * _.conformsTo(object, { 'b': function(n) { return n > 1; } });
     * // => true
     *
     * _.conformsTo(object, { 'b': function(n) { return n > 2; } });
     * // => false
     */
    function conformsTo(object, source) {
      return source == null || baseConformsTo(object, source, keys(source));
    }

    /**
     * Performs a
     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
     * comparison between two values to determine if they are equivalent.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     * @example
     *
     * var object = { 'a': 1 };
     * var other = { 'a': 1 };
     *
     * _.eq(object, object);
     * // => true
     *
     * _.eq(object, other);
     * // => false
     *
     * _.eq('a', 'a');
     * // => true
     *
     * _.eq('a', Object('a'));
     * // => false
     *
     * _.eq(NaN, NaN);
     * // => true
     */
    function eq(value, other) {
      return value === other || (value !== value && other !== other);
    }

    /**
     * Checks if `value` is greater than `other`.
     *
     * @static
     * @memberOf _
     * @since 3.9.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is greater than `other`,
     *  else `false`.
     * @see _.lt
     * @example
     *
     * _.gt(3, 1);
     * // => true
     *
     * _.gt(3, 3);
     * // => false
     *
     * _.gt(1, 3);
     * // => false
     */
    var gt = createRelationalOperation(baseGt);

    /**
     * Checks if `value` is greater than or equal to `other`.
     *
     * @static
     * @memberOf _
     * @since 3.9.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is greater than or equal to
     *  `other`, else `false`.
     * @see _.lte
     * @example
     *
     * _.gte(3, 1);
     * // => true
     *
     * _.gte(3, 3);
     * // => true
     *
     * _.gte(1, 3);
     * // => false
     */
    var gte = createRelationalOperation(function(value, other) {
      return value >= other;
    });

    /**
     * Checks if `value` is likely an `arguments` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an `arguments` object,
     *  else `false`.
     * @example
     *
     * _.isArguments(function() { return arguments; }());
     * // => true
     *
     * _.isArguments([1, 2, 3]);
     * // => false
     */
    var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {
      return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&
        !propertyIsEnumerable.call(value, 'callee');
    };

    /**
     * Checks if `value` is classified as an `Array` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array, else `false`.
     * @example
     *
     * _.isArray([1, 2, 3]);
     * // => true
     *
     * _.isArray(document.body.children);
     * // => false
     *
     * _.isArray('abc');
     * // => false
     *
     * _.isArray(_.noop);
     * // => false
     */
    var isArray = Array.isArray;

    /**
     * Checks if `value` is classified as an `ArrayBuffer` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
     * @example
     *
     * _.isArrayBuffer(new ArrayBuffer(2));
     * // => true
     *
     * _.isArrayBuffer(new Array(2));
     * // => false
     */
    var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;

    /**
     * Checks if `value` is array-like. A value is considered array-like if it's
     * not a function and has a `value.length` that's an integer greater than or
     * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
     * @example
     *
     * _.isArrayLike([1, 2, 3]);
     * // => true
     *
     * _.isArrayLike(document.body.children);
     * // => true
     *
     * _.isArrayLike('abc');
     * // => true
     *
     * _.isArrayLike(_.noop);
     * // => false
     */
    function isArrayLike(value) {
      return value != null && isLength(value.length) && !isFunction(value);
    }

    /**
     * This method is like `_.isArrayLike` except that it also checks if `value`
     * is an object.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array-like object,
     *  else `false`.
     * @example
     *
     * _.isArrayLikeObject([1, 2, 3]);
     * // => true
     *
     * _.isArrayLikeObject(document.body.children);
     * // => true
     *
     * _.isArrayLikeObject('abc');
     * // => false
     *
     * _.isArrayLikeObject(_.noop);
     * // => false
     */
    function isArrayLikeObject(value) {
      return isObjectLike(value) && isArrayLike(value);
    }

    /**
     * Checks if `value` is classified as a boolean primitive or object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.
     * @example
     *
     * _.isBoolean(false);
     * // => true
     *
     * _.isBoolean(null);
     * // => false
     */
    function isBoolean(value) {
      return value === true || value === false ||
        (isObjectLike(value) && baseGetTag(value) == boolTag);
    }

    /**
     * Checks if `value` is a buffer.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
     * @example
     *
     * _.isBuffer(new Buffer(2));
     * // => true
     *
     * _.isBuffer(new Uint8Array(2));
     * // => false
     */
    var isBuffer = nativeIsBuffer || stubFalse;

    /**
     * Checks if `value` is classified as a `Date` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
     * @example
     *
     * _.isDate(new Date);
     * // => true
     *
     * _.isDate('Mon April 23 2012');
     * // => false
     */
    var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;

    /**
     * Checks if `value` is likely a DOM element.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.
     * @example
     *
     * _.isElement(document.body);
     * // => true
     *
     * _.isElement('<body>');
     * // => false
     */
    function isElement(value) {
      return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);
    }

    /**
     * Checks if `value` is an empty object, collection, map, or set.
     *
     * Objects are considered empty if they have no own enumerable string keyed
     * properties.
     *
     * Array-like values such as `arguments` objects, arrays, buffers, strings, or
     * jQuery-like collections are considered empty if they have a `length` of `0`.
     * Similarly, maps and sets are considered empty if they have a `size` of `0`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is empty, else `false`.
     * @example
     *
     * _.isEmpty(null);
     * // => true
     *
     * _.isEmpty(true);
     * // => true
     *
     * _.isEmpty(1);
     * // => true
     *
     * _.isEmpty([1, 2, 3]);
     * // => false
     *
     * _.isEmpty({ 'a': 1 });
     * // => false
     */
    function isEmpty(value) {
      if (value == null) {
        return true;
      }
      if (isArrayLike(value) &&
          (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||
            isBuffer(value) || isTypedArray(value) || isArguments(value))) {
        return !value.length;
      }
      var tag = getTag(value);
      if (tag == mapTag || tag == setTag) {
        return !value.size;
      }
      if (isPrototype(value)) {
        return !baseKeys(value).length;
      }
      for (var key in value) {
        if (hasOwnProperty.call(value, key)) {
          return false;
        }
      }
      return true;
    }

    /**
     * Performs a deep comparison between two values to determine if they are
     * equivalent.
     *
     * **Note:** This method supports comparing arrays, array buffers, booleans,
     * date objects, error objects, maps, numbers, `Object` objects, regexes,
     * sets, strings, symbols, and typed arrays. `Object` objects are compared
     * by their own, not inherited, enumerable properties. Functions and DOM
     * nodes are compared by strict equality, i.e. `===`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     * @example
     *
     * var object = { 'a': 1 };
     * var other = { 'a': 1 };
     *
     * _.isEqual(object, other);
     * // => true
     *
     * object === other;
     * // => false
     */
    function isEqual(value, other) {
      return baseIsEqual(value, other);
    }

    /**
     * This method is like `_.isEqual` except that it accepts `customizer` which
     * is invoked to compare values. If `customizer` returns `undefined`, comparisons
     * are handled by the method instead. The `customizer` is invoked with up to
     * six arguments: (objValue, othValue [, index|key, object, other, stack]).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @param {Function} [customizer] The function to customize comparisons.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     * @example
     *
     * function isGreeting(value) {
     *   return /^h(?:i|ello)$/.test(value);
     * }
     *
     * function customizer(objValue, othValue) {
     *   if (isGreeting(objValue) && isGreeting(othValue)) {
     *     return true;
     *   }
     * }
     *
     * var array = ['hello', 'goodbye'];
     * var other = ['hi', 'goodbye'];
     *
     * _.isEqualWith(array, other, customizer);
     * // => true
     */
    function isEqualWith(value, other, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      var result = customizer ? customizer(value, other) : undefined;
      return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;
    }

    /**
     * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,
     * `SyntaxError`, `TypeError`, or `URIError` object.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an error object, else `false`.
     * @example
     *
     * _.isError(new Error);
     * // => true
     *
     * _.isError(Error);
     * // => false
     */
    function isError(value) {
      if (!isObjectLike(value)) {
        return false;
      }
      var tag = baseGetTag(value);
      return tag == errorTag || tag == domExcTag ||
        (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));
    }

    /**
     * Checks if `value` is a finite primitive number.
     *
     * **Note:** This method is based on
     * [`Number.isFinite`](https://mdn.io/Number/isFinite).
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.
     * @example
     *
     * _.isFinite(3);
     * // => true
     *
     * _.isFinite(Number.MIN_VALUE);
     * // => true
     *
     * _.isFinite(Infinity);
     * // => false
     *
     * _.isFinite('3');
     * // => false
     */
    function isFinite(value) {
      return typeof value == 'number' && nativeIsFinite(value);
    }

    /**
     * Checks if `value` is classified as a `Function` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a function, else `false`.
     * @example
     *
     * _.isFunction(_);
     * // => true
     *
     * _.isFunction(/abc/);
     * // => false
     */
    function isFunction(value) {
      if (!isObject(value)) {
        return false;
      }
      // The use of `Object#toString` avoids issues with the `typeof` operator
      // in Safari 9 which returns 'object' for typed arrays and other constructors.
      var tag = baseGetTag(value);
      return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;
    }

    /**
     * Checks if `value` is an integer.
     *
     * **Note:** This method is based on
     * [`Number.isInteger`](https://mdn.io/Number/isInteger).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an integer, else `false`.
     * @example
     *
     * _.isInteger(3);
     * // => true
     *
     * _.isInteger(Number.MIN_VALUE);
     * // => false
     *
     * _.isInteger(Infinity);
     * // => false
     *
     * _.isInteger('3');
     * // => false
     */
    function isInteger(value) {
      return typeof value == 'number' && value == toInteger(value);
    }

    /**
     * Checks if `value` is a valid array-like length.
     *
     * **Note:** This method is loosely based on
     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
     * @example
     *
     * _.isLength(3);
     * // => true
     *
     * _.isLength(Number.MIN_VALUE);
     * // => false
     *
     * _.isLength(Infinity);
     * // => false
     *
     * _.isLength('3');
     * // => false
     */
    function isLength(value) {
      return typeof value == 'number' &&
        value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
    }

    /**
     * Checks if `value` is the
     * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
     * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an object, else `false`.
     * @example
     *
     * _.isObject({});
     * // => true
     *
     * _.isObject([1, 2, 3]);
     * // => true
     *
     * _.isObject(_.noop);
     * // => true
     *
     * _.isObject(null);
     * // => false
     */
    function isObject(value) {
      var type = typeof value;
      return value != null && (type == 'object' || type == 'function');
    }

    /**
     * Checks if `value` is object-like. A value is object-like if it's not `null`
     * and has a `typeof` result of "object".
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
     * @example
     *
     * _.isObjectLike({});
     * // => true
     *
     * _.isObjectLike([1, 2, 3]);
     * // => true
     *
     * _.isObjectLike(_.noop);
     * // => false
     *
     * _.isObjectLike(null);
     * // => false
     */
    function isObjectLike(value) {
      return value != null && typeof value == 'object';
    }

    /**
     * Checks if `value` is classified as a `Map` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a map, else `false`.
     * @example
     *
     * _.isMap(new Map);
     * // => true
     *
     * _.isMap(new WeakMap);
     * // => false
     */
    var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;

    /**
     * Performs a partial deep comparison between `object` and `source` to
     * determine if `object` contains equivalent property values.
     *
     * **Note:** This method is equivalent to `_.matches` when `source` is
     * partially applied.
     *
     * Partial comparisons will match empty array and empty object `source`
     * values against any array or object value, respectively. See `_.isEqual`
     * for a list of supported value comparisons.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property values to match.
     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
     * @example
     *
     * var object = { 'a': 1, 'b': 2 };
     *
     * _.isMatch(object, { 'b': 2 });
     * // => true
     *
     * _.isMatch(object, { 'b': 1 });
     * // => false
     */
    function isMatch(object, source) {
      return object === source || baseIsMatch(object, source, getMatchData(source));
    }

    /**
     * This method is like `_.isMatch` except that it accepts `customizer` which
     * is invoked to compare values. If `customizer` returns `undefined`, comparisons
     * are handled by the method instead. The `customizer` is invoked with five
     * arguments: (objValue, srcValue, index|key, object, source).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property values to match.
     * @param {Function} [customizer] The function to customize comparisons.
     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
     * @example
     *
     * function isGreeting(value) {
     *   return /^h(?:i|ello)$/.test(value);
     * }
     *
     * function customizer(objValue, srcValue) {
     *   if (isGreeting(objValue) && isGreeting(srcValue)) {
     *     return true;
     *   }
     * }
     *
     * var object = { 'greeting': 'hello' };
     * var source = { 'greeting': 'hi' };
     *
     * _.isMatchWith(object, source, customizer);
     * // => true
     */
    function isMatchWith(object, source, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return baseIsMatch(object, source, getMatchData(source), customizer);
    }

    /**
     * Checks if `value` is `NaN`.
     *
     * **Note:** This method is based on
     * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as
     * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for
     * `undefined` and other non-number values.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
     * @example
     *
     * _.isNaN(NaN);
     * // => true
     *
     * _.isNaN(new Number(NaN));
     * // => true
     *
     * isNaN(undefined);
     * // => true
     *
     * _.isNaN(undefined);
     * // => false
     */
    function isNaN(value) {
      // An `NaN` primitive is the only value that is not equal to itself.
      // Perform the `toStringTag` check first to avoid errors with some
      // ActiveX objects in IE.
      return isNumber(value) && value != +value;
    }

    /**
     * Checks if `value` is a pristine native function.
     *
     * **Note:** This method can't reliably detect native functions in the presence
     * of the core-js package because core-js circumvents this kind of detection.
     * Despite multiple requests, the core-js maintainer has made it clear: any
     * attempt to fix the detection will be obstructed. As a result, we're left
     * with little choice but to throw an error. Unfortunately, this also affects
     * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),
     * which rely on core-js.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a native function,
     *  else `false`.
     * @example
     *
     * _.isNative(Array.prototype.push);
     * // => true
     *
     * _.isNative(_);
     * // => false
     */
    function isNative(value) {
      if (isMaskable(value)) {
        throw new Error(CORE_ERROR_TEXT);
      }
      return baseIsNative(value);
    }

    /**
     * Checks if `value` is `null`.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is `null`, else `false`.
     * @example
     *
     * _.isNull(null);
     * // => true
     *
     * _.isNull(void 0);
     * // => false
     */
    function isNull(value) {
      return value === null;
    }

    /**
     * Checks if `value` is `null` or `undefined`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is nullish, else `false`.
     * @example
     *
     * _.isNil(null);
     * // => true
     *
     * _.isNil(void 0);
     * // => true
     *
     * _.isNil(NaN);
     * // => false
     */
    function isNil(value) {
      return value == null;
    }

    /**
     * Checks if `value` is classified as a `Number` primitive or object.
     *
     * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are
     * classified as numbers, use the `_.isFinite` method.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a number, else `false`.
     * @example
     *
     * _.isNumber(3);
     * // => true
     *
     * _.isNumber(Number.MIN_VALUE);
     * // => true
     *
     * _.isNumber(Infinity);
     * // => true
     *
     * _.isNumber('3');
     * // => false
     */
    function isNumber(value) {
      return typeof value == 'number' ||
        (isObjectLike(value) && baseGetTag(value) == numberTag);
    }

    /**
     * Checks if `value` is a plain object, that is, an object created by the
     * `Object` constructor or one with a `[[Prototype]]` of `null`.
     *
     * @static
     * @memberOf _
     * @since 0.8.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     * }
     *
     * _.isPlainObject(new Foo);
     * // => false
     *
     * _.isPlainObject([1, 2, 3]);
     * // => false
     *
     * _.isPlainObject({ 'x': 0, 'y': 0 });
     * // => true
     *
     * _.isPlainObject(Object.create(null));
     * // => true
     */
    function isPlainObject(value) {
      if (!isObjectLike(value) || baseGetTag(value) != objectTag) {
        return false;
      }
      var proto = getPrototype(value);
      if (proto === null) {
        return true;
      }
      var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;
      return typeof Ctor == 'function' && Ctor instanceof Ctor &&
        funcToString.call(Ctor) == objectCtorString;
    }

    /**
     * Checks if `value` is classified as a `RegExp` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
     * @example
     *
     * _.isRegExp(/abc/);
     * // => true
     *
     * _.isRegExp('/abc/');
     * // => false
     */
    var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;

    /**
     * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754
     * double precision number which isn't the result of a rounded unsafe integer.
     *
     * **Note:** This method is based on
     * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.
     * @example
     *
     * _.isSafeInteger(3);
     * // => true
     *
     * _.isSafeInteger(Number.MIN_VALUE);
     * // => false
     *
     * _.isSafeInteger(Infinity);
     * // => false
     *
     * _.isSafeInteger('3');
     * // => false
     */
    function isSafeInteger(value) {
      return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;
    }

    /**
     * Checks if `value` is classified as a `Set` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a set, else `false`.
     * @example
     *
     * _.isSet(new Set);
     * // => true
     *
     * _.isSet(new WeakSet);
     * // => false
     */
    var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;

    /**
     * Checks if `value` is classified as a `String` primitive or object.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a string, else `false`.
     * @example
     *
     * _.isString('abc');
     * // => true
     *
     * _.isString(1);
     * // => false
     */
    function isString(value) {
      return typeof value == 'string' ||
        (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);
    }

    /**
     * Checks if `value` is classified as a `Symbol` primitive or object.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
     * @example
     *
     * _.isSymbol(Symbol.iterator);
     * // => true
     *
     * _.isSymbol('abc');
     * // => false
     */
    function isSymbol(value) {
      return typeof value == 'symbol' ||
        (isObjectLike(value) && baseGetTag(value) == symbolTag);
    }

    /**
     * Checks if `value` is classified as a typed array.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
     * @example
     *
     * _.isTypedArray(new Uint8Array);
     * // => true
     *
     * _.isTypedArray([]);
     * // => false
     */
    var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;

    /**
     * Checks if `value` is `undefined`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
     * @example
     *
     * _.isUndefined(void 0);
     * // => true
     *
     * _.isUndefined(null);
     * // => false
     */
    function isUndefined(value) {
      return value === undefined;
    }

    /**
     * Checks if `value` is classified as a `WeakMap` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.
     * @example
     *
     * _.isWeakMap(new WeakMap);
     * // => true
     *
     * _.isWeakMap(new Map);
     * // => false
     */
    function isWeakMap(value) {
      return isObjectLike(value) && getTag(value) == weakMapTag;
    }

    /**
     * Checks if `value` is classified as a `WeakSet` object.
     *
     * @static
     * @memberOf _
     * @since 4.3.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.
     * @example
     *
     * _.isWeakSet(new WeakSet);
     * // => true
     *
     * _.isWeakSet(new Set);
     * // => false
     */
    function isWeakSet(value) {
      return isObjectLike(value) && baseGetTag(value) == weakSetTag;
    }

    /**
     * Checks if `value` is less than `other`.
     *
     * @static
     * @memberOf _
     * @since 3.9.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is less than `other`,
     *  else `false`.
     * @see _.gt
     * @example
     *
     * _.lt(1, 3);
     * // => true
     *
     * _.lt(3, 3);
     * // => false
     *
     * _.lt(3, 1);
     * // => false
     */
    var lt = createRelationalOperation(baseLt);

    /**
     * Checks if `value` is less than or equal to `other`.
     *
     * @static
     * @memberOf _
     * @since 3.9.0
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @returns {boolean} Returns `true` if `value` is less than or equal to
     *  `other`, else `false`.
     * @see _.gte
     * @example
     *
     * _.lte(1, 3);
     * // => true
     *
     * _.lte(3, 3);
     * // => true
     *
     * _.lte(3, 1);
     * // => false
     */
    var lte = createRelationalOperation(function(value, other) {
      return value <= other;
    });

    /**
     * Converts `value` to an array.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {Array} Returns the converted array.
     * @example
     *
     * _.toArray({ 'a': 1, 'b': 2 });
     * // => [1, 2]
     *
     * _.toArray('abc');
     * // => ['a', 'b', 'c']
     *
     * _.toArray(1);
     * // => []
     *
     * _.toArray(null);
     * // => []
     */
    function toArray(value) {
      if (!value) {
        return [];
      }
      if (isArrayLike(value)) {
        return isString(value) ? stringToArray(value) : copyArray(value);
      }
      if (symIterator && value[symIterator]) {
        return iteratorToArray(value[symIterator]());
      }
      var tag = getTag(value),
          func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);

      return func(value);
    }

    /**
     * Converts `value` to a finite number.
     *
     * @static
     * @memberOf _
     * @since 4.12.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted number.
     * @example
     *
     * _.toFinite(3.2);
     * // => 3.2
     *
     * _.toFinite(Number.MIN_VALUE);
     * // => 5e-324
     *
     * _.toFinite(Infinity);
     * // => 1.7976931348623157e+308
     *
     * _.toFinite('3.2');
     * // => 3.2
     */
    function toFinite(value) {
      if (!value) {
        return value === 0 ? value : 0;
      }
      value = toNumber(value);
      if (value === INFINITY || value === -INFINITY) {
        var sign = (value < 0 ? -1 : 1);
        return sign * MAX_INTEGER;
      }
      return value === value ? value : 0;
    }

    /**
     * Converts `value` to an integer.
     *
     * **Note:** This method is loosely based on
     * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.toInteger(3.2);
     * // => 3
     *
     * _.toInteger(Number.MIN_VALUE);
     * // => 0
     *
     * _.toInteger(Infinity);
     * // => 1.7976931348623157e+308
     *
     * _.toInteger('3.2');
     * // => 3
     */
    function toInteger(value) {
      var result = toFinite(value),
          remainder = result % 1;

      return result === result ? (remainder ? result - remainder : result) : 0;
    }

    /**
     * Converts `value` to an integer suitable for use as the length of an
     * array-like object.
     *
     * **Note:** This method is based on
     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.toLength(3.2);
     * // => 3
     *
     * _.toLength(Number.MIN_VALUE);
     * // => 0
     *
     * _.toLength(Infinity);
     * // => 4294967295
     *
     * _.toLength('3.2');
     * // => 3
     */
    function toLength(value) {
      return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;
    }

    /**
     * Converts `value` to a number.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to process.
     * @returns {number} Returns the number.
     * @example
     *
     * _.toNumber(3.2);
     * // => 3.2
     *
     * _.toNumber(Number.MIN_VALUE);
     * // => 5e-324
     *
     * _.toNumber(Infinity);
     * // => Infinity
     *
     * _.toNumber('3.2');
     * // => 3.2
     */
    function toNumber(value) {
      if (typeof value == 'number') {
        return value;
      }
      if (isSymbol(value)) {
        return NAN;
      }
      if (isObject(value)) {
        var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
        value = isObject(other) ? (other + '') : other;
      }
      if (typeof value != 'string') {
        return value === 0 ? value : +value;
      }
      value = value.replace(reTrim, '');
      var isBinary = reIsBinary.test(value);
      return (isBinary || reIsOctal.test(value))
        ? freeParseInt(value.slice(2), isBinary ? 2 : 8)
        : (reIsBadHex.test(value) ? NAN : +value);
    }

    /**
     * Converts `value` to a plain object flattening inherited enumerable string
     * keyed properties of `value` to own properties of the plain object.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {Object} Returns the converted plain object.
     * @example
     *
     * function Foo() {
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.assign({ 'a': 1 }, new Foo);
     * // => { 'a': 1, 'b': 2 }
     *
     * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));
     * // => { 'a': 1, 'b': 2, 'c': 3 }
     */
    function toPlainObject(value) {
      return copyObject(value, keysIn(value));
    }

    /**
     * Converts `value` to a safe integer. A safe integer can be compared and
     * represented correctly.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.toSafeInteger(3.2);
     * // => 3
     *
     * _.toSafeInteger(Number.MIN_VALUE);
     * // => 0
     *
     * _.toSafeInteger(Infinity);
     * // => 9007199254740991
     *
     * _.toSafeInteger('3.2');
     * // => 3
     */
    function toSafeInteger(value) {
      return value
        ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)
        : (value === 0 ? value : 0);
    }

    /**
     * Converts `value` to a string. An empty string is returned for `null`
     * and `undefined` values. The sign of `-0` is preserved.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {string} Returns the converted string.
     * @example
     *
     * _.toString(null);
     * // => ''
     *
     * _.toString(-0);
     * // => '-0'
     *
     * _.toString([1, 2, 3]);
     * // => '1,2,3'
     */
    function toString(value) {
      return value == null ? '' : baseToString(value);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Assigns own enumerable string keyed properties of source objects to the
     * destination object. Source objects are applied from left to right.
     * Subsequent sources overwrite property assignments of previous sources.
     *
     * **Note:** This method mutates `object` and is loosely based on
     * [`Object.assign`](https://mdn.io/Object/assign).
     *
     * @static
     * @memberOf _
     * @since 0.10.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @see _.assignIn
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     * }
     *
     * function Bar() {
     *   this.c = 3;
     * }
     *
     * Foo.prototype.b = 2;
     * Bar.prototype.d = 4;
     *
     * _.assign({ 'a': 0 }, new Foo, new Bar);
     * // => { 'a': 1, 'c': 3 }
     */
    var assign = createAssigner(function(object, source) {
      if (isPrototype(source) || isArrayLike(source)) {
        copyObject(source, keys(source), object);
        return;
      }
      for (var key in source) {
        if (hasOwnProperty.call(source, key)) {
          assignValue(object, key, source[key]);
        }
      }
    });

    /**
     * This method is like `_.assign` except that it iterates over own and
     * inherited source properties.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @alias extend
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @see _.assign
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     * }
     *
     * function Bar() {
     *   this.c = 3;
     * }
     *
     * Foo.prototype.b = 2;
     * Bar.prototype.d = 4;
     *
     * _.assignIn({ 'a': 0 }, new Foo, new Bar);
     * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }
     */
    var assignIn = createAssigner(function(object, source) {
      copyObject(source, keysIn(source), object);
    });

    /**
     * This method is like `_.assignIn` except that it accepts `customizer`
     * which is invoked to produce the assigned values. If `customizer` returns
     * `undefined`, assignment is handled by the method instead. The `customizer`
     * is invoked with five arguments: (objValue, srcValue, key, object, source).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @alias extendWith
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} sources The source objects.
     * @param {Function} [customizer] The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @see _.assignWith
     * @example
     *
     * function customizer(objValue, srcValue) {
     *   return _.isUndefined(objValue) ? srcValue : objValue;
     * }
     *
     * var defaults = _.partialRight(_.assignInWith, customizer);
     *
     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
     * // => { 'a': 1, 'b': 2 }
     */
    var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {
      copyObject(source, keysIn(source), object, customizer);
    });

    /**
     * This method is like `_.assign` except that it accepts `customizer`
     * which is invoked to produce the assigned values. If `customizer` returns
     * `undefined`, assignment is handled by the method instead. The `customizer`
     * is invoked with five arguments: (objValue, srcValue, key, object, source).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} sources The source objects.
     * @param {Function} [customizer] The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @see _.assignInWith
     * @example
     *
     * function customizer(objValue, srcValue) {
     *   return _.isUndefined(objValue) ? srcValue : objValue;
     * }
     *
     * var defaults = _.partialRight(_.assignWith, customizer);
     *
     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
     * // => { 'a': 1, 'b': 2 }
     */
    var assignWith = createAssigner(function(object, source, srcIndex, customizer) {
      copyObject(source, keys(source), object, customizer);
    });

    /**
     * Creates an array of values corresponding to `paths` of `object`.
     *
     * @static
     * @memberOf _
     * @since 1.0.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {...(string|string[])} [paths] The property paths to pick.
     * @returns {Array} Returns the picked values.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
     *
     * _.at(object, ['a[0].b.c', 'a[1]']);
     * // => [3, 4]
     */
    var at = flatRest(baseAt);

    /**
     * Creates an object that inherits from the `prototype` object. If a
     * `properties` object is given, its own enumerable string keyed properties
     * are assigned to the created object.
     *
     * @static
     * @memberOf _
     * @since 2.3.0
     * @category Object
     * @param {Object} prototype The object to inherit from.
     * @param {Object} [properties] The properties to assign to the object.
     * @returns {Object} Returns the new object.
     * @example
     *
     * function Shape() {
     *   this.x = 0;
     *   this.y = 0;
     * }
     *
     * function Circle() {
     *   Shape.call(this);
     * }
     *
     * Circle.prototype = _.create(Shape.prototype, {
     *   'constructor': Circle
     * });
     *
     * var circle = new Circle;
     * circle instanceof Circle;
     * // => true
     *
     * circle instanceof Shape;
     * // => true
     */
    function create(prototype, properties) {
      var result = baseCreate(prototype);
      return properties == null ? result : baseAssign(result, properties);
    }

    /**
     * Assigns own and inherited enumerable string keyed properties of source
     * objects to the destination object for all destination properties that
     * resolve to `undefined`. Source objects are applied from left to right.
     * Once a property is set, additional values of the same property are ignored.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @see _.defaultsDeep
     * @example
     *
     * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
     * // => { 'a': 1, 'b': 2 }
     */
    var defaults = baseRest(function(object, sources) {
      object = Object(object);

      var index = -1;
      var length = sources.length;
      var guard = length > 2 ? sources[2] : undefined;

      if (guard && isIterateeCall(sources[0], sources[1], guard)) {
        length = 1;
      }

      while (++index < length) {
        var source = sources[index];
        var props = keysIn(source);
        var propsIndex = -1;
        var propsLength = props.length;

        while (++propsIndex < propsLength) {
          var key = props[propsIndex];
          var value = object[key];

          if (value === undefined ||
              (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {
            object[key] = source[key];
          }
        }
      }

      return object;
    });

    /**
     * This method is like `_.defaults` except that it recursively assigns
     * default properties.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 3.10.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @see _.defaults
     * @example
     *
     * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });
     * // => { 'a': { 'b': 2, 'c': 3 } }
     */
    var defaultsDeep = baseRest(function(args) {
      args.push(undefined, customDefaultsMerge);
      return apply(mergeWith, undefined, args);
    });

    /**
     * This method is like `_.find` except that it returns the key of the first
     * element `predicate` returns truthy for instead of the element itself.
     *
     * @static
     * @memberOf _
     * @since 1.1.0
     * @category Object
     * @param {Object} object The object to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {string|undefined} Returns the key of the matched element,
     *  else `undefined`.
     * @example
     *
     * var users = {
     *   'barney':  { 'age': 36, 'active': true },
     *   'fred':    { 'age': 40, 'active': false },
     *   'pebbles': { 'age': 1,  'active': true }
     * };
     *
     * _.findKey(users, function(o) { return o.age < 40; });
     * // => 'barney' (iteration order is not guaranteed)
     *
     * // The `_.matches` iteratee shorthand.
     * _.findKey(users, { 'age': 1, 'active': true });
     * // => 'pebbles'
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.findKey(users, ['active', false]);
     * // => 'fred'
     *
     * // The `_.property` iteratee shorthand.
     * _.findKey(users, 'active');
     * // => 'barney'
     */
    function findKey(object, predicate) {
      return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);
    }

    /**
     * This method is like `_.findKey` except that it iterates over elements of
     * a collection in the opposite order.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Object
     * @param {Object} object The object to inspect.
     * @param {Function} [predicate=_.identity] The function invoked per iteration.
     * @returns {string|undefined} Returns the key of the matched element,
     *  else `undefined`.
     * @example
     *
     * var users = {
     *   'barney':  { 'age': 36, 'active': true },
     *   'fred':    { 'age': 40, 'active': false },
     *   'pebbles': { 'age': 1,  'active': true }
     * };
     *
     * _.findLastKey(users, function(o) { return o.age < 40; });
     * // => returns 'pebbles' assuming `_.findKey` returns 'barney'
     *
     * // The `_.matches` iteratee shorthand.
     * _.findLastKey(users, { 'age': 36, 'active': true });
     * // => 'barney'
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.findLastKey(users, ['active', false]);
     * // => 'fred'
     *
     * // The `_.property` iteratee shorthand.
     * _.findLastKey(users, 'active');
     * // => 'pebbles'
     */
    function findLastKey(object, predicate) {
      return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);
    }

    /**
     * Iterates over own and inherited enumerable string keyed properties of an
     * object and invokes `iteratee` for each property. The iteratee is invoked
     * with three arguments: (value, key, object). Iteratee functions may exit
     * iteration early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @since 0.3.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns `object`.
     * @see _.forInRight
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forIn(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).
     */
    function forIn(object, iteratee) {
      return object == null
        ? object
        : baseFor(object, getIteratee(iteratee, 3), keysIn);
    }

    /**
     * This method is like `_.forIn` except that it iterates over properties of
     * `object` in the opposite order.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns `object`.
     * @see _.forIn
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forInRight(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.
     */
    function forInRight(object, iteratee) {
      return object == null
        ? object
        : baseForRight(object, getIteratee(iteratee, 3), keysIn);
    }

    /**
     * Iterates over own enumerable string keyed properties of an object and
     * invokes `iteratee` for each property. The iteratee is invoked with three
     * arguments: (value, key, object). Iteratee functions may exit iteration
     * early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @since 0.3.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns `object`.
     * @see _.forOwnRight
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forOwn(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'a' then 'b' (iteration order is not guaranteed).
     */
    function forOwn(object, iteratee) {
      return object && baseForOwn(object, getIteratee(iteratee, 3));
    }

    /**
     * This method is like `_.forOwn` except that it iterates over properties of
     * `object` in the opposite order.
     *
     * @static
     * @memberOf _
     * @since 2.0.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns `object`.
     * @see _.forOwn
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forOwnRight(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.
     */
    function forOwnRight(object, iteratee) {
      return object && baseForOwnRight(object, getIteratee(iteratee, 3));
    }

    /**
     * Creates an array of function property names from own enumerable properties
     * of `object`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns the function names.
     * @see _.functionsIn
     * @example
     *
     * function Foo() {
     *   this.a = _.constant('a');
     *   this.b = _.constant('b');
     * }
     *
     * Foo.prototype.c = _.constant('c');
     *
     * _.functions(new Foo);
     * // => ['a', 'b']
     */
    function functions(object) {
      return object == null ? [] : baseFunctions(object, keys(object));
    }

    /**
     * Creates an array of function property names from own and inherited
     * enumerable properties of `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns the function names.
     * @see _.functions
     * @example
     *
     * function Foo() {
     *   this.a = _.constant('a');
     *   this.b = _.constant('b');
     * }
     *
     * Foo.prototype.c = _.constant('c');
     *
     * _.functionsIn(new Foo);
     * // => ['a', 'b', 'c']
     */
    function functionsIn(object) {
      return object == null ? [] : baseFunctions(object, keysIn(object));
    }

    /**
     * Gets the value at `path` of `object`. If the resolved value is
     * `undefined`, the `defaultValue` is returned in its place.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the property to get.
     * @param {*} [defaultValue] The value returned for `undefined` resolved values.
     * @returns {*} Returns the resolved value.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
     *
     * _.get(object, 'a[0].b.c');
     * // => 3
     *
     * _.get(object, ['a', '0', 'b', 'c']);
     * // => 3
     *
     * _.get(object, 'a.b.c', 'default');
     * // => 'default'
     */
    function get(object, path, defaultValue) {
      var result = object == null ? undefined : baseGet(object, path);
      return result === undefined ? defaultValue : result;
    }

    /**
     * Checks if `path` is a direct property of `object`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path to check.
     * @returns {boolean} Returns `true` if `path` exists, else `false`.
     * @example
     *
     * var object = { 'a': { 'b': 2 } };
     * var other = _.create({ 'a': _.create({ 'b': 2 }) });
     *
     * _.has(object, 'a');
     * // => true
     *
     * _.has(object, 'a.b');
     * // => true
     *
     * _.has(object, ['a', 'b']);
     * // => true
     *
     * _.has(other, 'a');
     * // => false
     */
    function has(object, path) {
      return object != null && hasPath(object, path, baseHas);
    }

    /**
     * Checks if `path` is a direct or inherited property of `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path to check.
     * @returns {boolean} Returns `true` if `path` exists, else `false`.
     * @example
     *
     * var object = _.create({ 'a': _.create({ 'b': 2 }) });
     *
     * _.hasIn(object, 'a');
     * // => true
     *
     * _.hasIn(object, 'a.b');
     * // => true
     *
     * _.hasIn(object, ['a', 'b']);
     * // => true
     *
     * _.hasIn(object, 'b');
     * // => false
     */
    function hasIn(object, path) {
      return object != null && hasPath(object, path, baseHasIn);
    }

    /**
     * Creates an object composed of the inverted keys and values of `object`.
     * If `object` contains duplicate values, subsequent values overwrite
     * property assignments of previous values.
     *
     * @static
     * @memberOf _
     * @since 0.7.0
     * @category Object
     * @param {Object} object The object to invert.
     * @returns {Object} Returns the new inverted object.
     * @example
     *
     * var object = { 'a': 1, 'b': 2, 'c': 1 };
     *
     * _.invert(object);
     * // => { '1': 'c', '2': 'b' }
     */
    var invert = createInverter(function(result, value, key) {
      if (value != null &&
          typeof value.toString != 'function') {
        value = nativeObjectToString.call(value);
      }

      result[value] = key;
    }, constant(identity));

    /**
     * This method is like `_.invert` except that the inverted object is generated
     * from the results of running each element of `object` thru `iteratee`. The
     * corresponding inverted value of each inverted key is an array of keys
     * responsible for generating the inverted value. The iteratee is invoked
     * with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.1.0
     * @category Object
     * @param {Object} object The object to invert.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {Object} Returns the new inverted object.
     * @example
     *
     * var object = { 'a': 1, 'b': 2, 'c': 1 };
     *
     * _.invertBy(object);
     * // => { '1': ['a', 'c'], '2': ['b'] }
     *
     * _.invertBy(object, function(value) {
     *   return 'group' + value;
     * });
     * // => { 'group1': ['a', 'c'], 'group2': ['b'] }
     */
    var invertBy = createInverter(function(result, value, key) {
      if (value != null &&
          typeof value.toString != 'function') {
        value = nativeObjectToString.call(value);
      }

      if (hasOwnProperty.call(result, value)) {
        result[value].push(key);
      } else {
        result[value] = [key];
      }
    }, getIteratee);

    /**
     * Invokes the method at `path` of `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the method to invoke.
     * @param {...*} [args] The arguments to invoke the method with.
     * @returns {*} Returns the result of the invoked method.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };
     *
     * _.invoke(object, 'a[0].b.c.slice', 1, 3);
     * // => [2, 3]
     */
    var invoke = baseRest(baseInvoke);

    /**
     * Creates an array of the own enumerable property names of `object`.
     *
     * **Note:** Non-object values are coerced to objects. See the
     * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
     * for more details.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.keys(new Foo);
     * // => ['a', 'b'] (iteration order is not guaranteed)
     *
     * _.keys('hi');
     * // => ['0', '1']
     */
    function keys(object) {
      return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
    }

    /**
     * Creates an array of the own and inherited enumerable property names of `object`.
     *
     * **Note:** Non-object values are coerced to objects.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.keysIn(new Foo);
     * // => ['a', 'b', 'c'] (iteration order is not guaranteed)
     */
    function keysIn(object) {
      return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);
    }

    /**
     * The opposite of `_.mapValues`; this method creates an object with the
     * same values as `object` and keys generated by running each own enumerable
     * string keyed property of `object` thru `iteratee`. The iteratee is invoked
     * with three arguments: (value, key, object).
     *
     * @static
     * @memberOf _
     * @since 3.8.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns the new mapped object.
     * @see _.mapValues
     * @example
     *
     * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {
     *   return key + value;
     * });
     * // => { 'a1': 1, 'b2': 2 }
     */
    function mapKeys(object, iteratee) {
      var result = {};
      iteratee = getIteratee(iteratee, 3);

      baseForOwn(object, function(value, key, object) {
        baseAssignValue(result, iteratee(value, key, object), value);
      });
      return result;
    }

    /**
     * Creates an object with the same keys as `object` and values generated
     * by running each own enumerable string keyed property of `object` thru
     * `iteratee`. The iteratee is invoked with three arguments:
     * (value, key, object).
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Object} Returns the new mapped object.
     * @see _.mapKeys
     * @example
     *
     * var users = {
     *   'fred':    { 'user': 'fred',    'age': 40 },
     *   'pebbles': { 'user': 'pebbles', 'age': 1 }
     * };
     *
     * _.mapValues(users, function(o) { return o.age; });
     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
     *
     * // The `_.property` iteratee shorthand.
     * _.mapValues(users, 'age');
     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
     */
    function mapValues(object, iteratee) {
      var result = {};
      iteratee = getIteratee(iteratee, 3);

      baseForOwn(object, function(value, key, object) {
        baseAssignValue(result, key, iteratee(value, key, object));
      });
      return result;
    }

    /**
     * This method is like `_.assign` except that it recursively merges own and
     * inherited enumerable string keyed properties of source objects into the
     * destination object. Source properties that resolve to `undefined` are
     * skipped if a destination value exists. Array and plain object properties
     * are merged recursively. Other objects and value types are overridden by
     * assignment. Source objects are applied from left to right. Subsequent
     * sources overwrite property assignments of previous sources.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 0.5.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = {
     *   'a': [{ 'b': 2 }, { 'd': 4 }]
     * };
     *
     * var other = {
     *   'a': [{ 'c': 3 }, { 'e': 5 }]
     * };
     *
     * _.merge(object, other);
     * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }
     */
    var merge = createAssigner(function(object, source, srcIndex) {
      baseMerge(object, source, srcIndex);
    });

    /**
     * This method is like `_.merge` except that it accepts `customizer` which
     * is invoked to produce the merged values of the destination and source
     * properties. If `customizer` returns `undefined`, merging is handled by the
     * method instead. The `customizer` is invoked with six arguments:
     * (objValue, srcValue, key, object, source, stack).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} sources The source objects.
     * @param {Function} customizer The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @example
     *
     * function customizer(objValue, srcValue) {
     *   if (_.isArray(objValue)) {
     *     return objValue.concat(srcValue);
     *   }
     * }
     *
     * var object = { 'a': [1], 'b': [2] };
     * var other = { 'a': [3], 'b': [4] };
     *
     * _.mergeWith(object, other, customizer);
     * // => { 'a': [1, 3], 'b': [2, 4] }
     */
    var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {
      baseMerge(object, source, srcIndex, customizer);
    });

    /**
     * The opposite of `_.pick`; this method creates an object composed of the
     * own and inherited enumerable property paths of `object` that are not omitted.
     *
     * **Note:** This method is considerably slower than `_.pick`.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The source object.
     * @param {...(string|string[])} [paths] The property paths to omit.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'a': 1, 'b': '2', 'c': 3 };
     *
     * _.omit(object, ['a', 'c']);
     * // => { 'b': '2' }
     */
    var omit = flatRest(function(object, paths) {
      var result = {};
      if (object == null) {
        return result;
      }
      var isDeep = false;
      paths = arrayMap(paths, function(path) {
        path = castPath(path, object);
        isDeep || (isDeep = path.length > 1);
        return path;
      });
      copyObject(object, getAllKeysIn(object), result);
      if (isDeep) {
        result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);
      }
      var length = paths.length;
      while (length--) {
        baseUnset(result, paths[length]);
      }
      return result;
    });

    /**
     * The opposite of `_.pickBy`; this method creates an object composed of
     * the own and inherited enumerable string keyed properties of `object` that
     * `predicate` doesn't return truthy for. The predicate is invoked with two
     * arguments: (value, key).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The source object.
     * @param {Function} [predicate=_.identity] The function invoked per property.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'a': 1, 'b': '2', 'c': 3 };
     *
     * _.omitBy(object, _.isNumber);
     * // => { 'b': '2' }
     */
    function omitBy(object, predicate) {
      return pickBy(object, negate(getIteratee(predicate)));
    }

    /**
     * Creates an object composed of the picked `object` properties.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The source object.
     * @param {...(string|string[])} [paths] The property paths to pick.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'a': 1, 'b': '2', 'c': 3 };
     *
     * _.pick(object, ['a', 'c']);
     * // => { 'a': 1, 'c': 3 }
     */
    var pick = flatRest(function(object, paths) {
      return object == null ? {} : basePick(object, paths);
    });

    /**
     * Creates an object composed of the `object` properties `predicate` returns
     * truthy for. The predicate is invoked with two arguments: (value, key).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The source object.
     * @param {Function} [predicate=_.identity] The function invoked per property.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'a': 1, 'b': '2', 'c': 3 };
     *
     * _.pickBy(object, _.isNumber);
     * // => { 'a': 1, 'c': 3 }
     */
    function pickBy(object, predicate) {
      if (object == null) {
        return {};
      }
      var props = arrayMap(getAllKeysIn(object), function(prop) {
        return [prop];
      });
      predicate = getIteratee(predicate);
      return basePickBy(object, props, function(value, path) {
        return predicate(value, path[0]);
      });
    }

    /**
     * This method is like `_.get` except that if the resolved value is a
     * function it's invoked with the `this` binding of its parent object and
     * its result is returned.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @param {Array|string} path The path of the property to resolve.
     * @param {*} [defaultValue] The value returned for `undefined` resolved values.
     * @returns {*} Returns the resolved value.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };
     *
     * _.result(object, 'a[0].b.c1');
     * // => 3
     *
     * _.result(object, 'a[0].b.c2');
     * // => 4
     *
     * _.result(object, 'a[0].b.c3', 'default');
     * // => 'default'
     *
     * _.result(object, 'a[0].b.c3', _.constant('default'));
     * // => 'default'
     */
    function result(object, path, defaultValue) {
      path = castPath(path, object);

      var index = -1,
          length = path.length;

      // Ensure the loop is entered when path is empty.
      if (!length) {
        length = 1;
        object = undefined;
      }
      while (++index < length) {
        var value = object == null ? undefined : object[toKey(path[index])];
        if (value === undefined) {
          index = length;
          value = defaultValue;
        }
        object = isFunction(value) ? value.call(object) : value;
      }
      return object;
    }

    /**
     * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,
     * it's created. Arrays are created for missing index properties while objects
     * are created for all other missing properties. Use `_.setWith` to customize
     * `path` creation.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {*} value The value to set.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
     *
     * _.set(object, 'a[0].b.c', 4);
     * console.log(object.a[0].b.c);
     * // => 4
     *
     * _.set(object, ['x', '0', 'y', 'z'], 5);
     * console.log(object.x[0].y.z);
     * // => 5
     */
    function set(object, path, value) {
      return object == null ? object : baseSet(object, path, value);
    }

    /**
     * This method is like `_.set` except that it accepts `customizer` which is
     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
     * path creation is handled by the method instead. The `customizer` is invoked
     * with three arguments: (nsValue, key, nsObject).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {*} value The value to set.
     * @param {Function} [customizer] The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = {};
     *
     * _.setWith(object, '[0][1]', 'a', Object);
     * // => { '0': { '1': 'a' } }
     */
    function setWith(object, path, value, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return object == null ? object : baseSet(object, path, value, customizer);
    }

    /**
     * Creates an array of own enumerable string keyed-value pairs for `object`
     * which can be consumed by `_.fromPairs`. If `object` is a map or set, its
     * entries are returned.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @alias entries
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the key-value pairs.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.toPairs(new Foo);
     * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)
     */
    var toPairs = createToPairs(keys);

    /**
     * Creates an array of own and inherited enumerable string keyed-value pairs
     * for `object` which can be consumed by `_.fromPairs`. If `object` is a map
     * or set, its entries are returned.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @alias entriesIn
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the key-value pairs.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.toPairsIn(new Foo);
     * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)
     */
    var toPairsIn = createToPairs(keysIn);

    /**
     * An alternative to `_.reduce`; this method transforms `object` to a new
     * `accumulator` object which is the result of running each of its own
     * enumerable string keyed properties thru `iteratee`, with each invocation
     * potentially mutating the `accumulator` object. If `accumulator` is not
     * provided, a new object with the same `[[Prototype]]` will be used. The
     * iteratee is invoked with four arguments: (accumulator, value, key, object).
     * Iteratee functions may exit iteration early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @since 1.3.0
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [accumulator] The custom accumulator value.
     * @returns {*} Returns the accumulated value.
     * @example
     *
     * _.transform([2, 3, 4], function(result, n) {
     *   result.push(n *= n);
     *   return n % 2 == 0;
     * }, []);
     * // => [4, 9]
     *
     * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
     *   (result[value] || (result[value] = [])).push(key);
     * }, {});
     * // => { '1': ['a', 'c'], '2': ['b'] }
     */
    function transform(object, iteratee, accumulator) {
      var isArr = isArray(object),
          isArrLike = isArr || isBuffer(object) || isTypedArray(object);

      iteratee = getIteratee(iteratee, 4);
      if (accumulator == null) {
        var Ctor = object && object.constructor;
        if (isArrLike) {
          accumulator = isArr ? new Ctor : [];
        }
        else if (isObject(object)) {
          accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};
        }
        else {
          accumulator = {};
        }
      }
      (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {
        return iteratee(accumulator, value, index, object);
      });
      return accumulator;
    }

    /**
     * Removes the property at `path` of `object`.
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to unset.
     * @returns {boolean} Returns `true` if the property is deleted, else `false`.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 7 } }] };
     * _.unset(object, 'a[0].b.c');
     * // => true
     *
     * console.log(object);
     * // => { 'a': [{ 'b': {} }] };
     *
     * _.unset(object, ['a', '0', 'b', 'c']);
     * // => true
     *
     * console.log(object);
     * // => { 'a': [{ 'b': {} }] };
     */
    function unset(object, path) {
      return object == null ? true : baseUnset(object, path);
    }

    /**
     * This method is like `_.set` except that accepts `updater` to produce the
     * value to set. Use `_.updateWith` to customize `path` creation. The `updater`
     * is invoked with one argument: (value).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.6.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {Function} updater The function to produce the updated value.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
     *
     * _.update(object, 'a[0].b.c', function(n) { return n * n; });
     * console.log(object.a[0].b.c);
     * // => 9
     *
     * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });
     * console.log(object.x[0].y.z);
     * // => 0
     */
    function update(object, path, updater) {
      return object == null ? object : baseUpdate(object, path, castFunction(updater));
    }

    /**
     * This method is like `_.update` except that it accepts `customizer` which is
     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
     * path creation is handled by the method instead. The `customizer` is invoked
     * with three arguments: (nsValue, key, nsObject).
     *
     * **Note:** This method mutates `object`.
     *
     * @static
     * @memberOf _
     * @since 4.6.0
     * @category Object
     * @param {Object} object The object to modify.
     * @param {Array|string} path The path of the property to set.
     * @param {Function} updater The function to produce the updated value.
     * @param {Function} [customizer] The function to customize assigned values.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var object = {};
     *
     * _.updateWith(object, '[0][1]', _.constant('a'), Object);
     * // => { '0': { '1': 'a' } }
     */
    function updateWith(object, path, updater, customizer) {
      customizer = typeof customizer == 'function' ? customizer : undefined;
      return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);
    }

    /**
     * Creates an array of the own enumerable string keyed property values of `object`.
     *
     * **Note:** Non-object values are coerced to objects.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property values.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.values(new Foo);
     * // => [1, 2] (iteration order is not guaranteed)
     *
     * _.values('hi');
     * // => ['h', 'i']
     */
    function values(object) {
      return object == null ? [] : baseValues(object, keys(object));
    }

    /**
     * Creates an array of the own and inherited enumerable string keyed property
     * values of `object`.
     *
     * **Note:** Non-object values are coerced to objects.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property values.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.valuesIn(new Foo);
     * // => [1, 2, 3] (iteration order is not guaranteed)
     */
    function valuesIn(object) {
      return object == null ? [] : baseValues(object, keysIn(object));
    }

    /*------------------------------------------------------------------------*/

    /**
     * Clamps `number` within the inclusive `lower` and `upper` bounds.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Number
     * @param {number} number The number to clamp.
     * @param {number} [lower] The lower bound.
     * @param {number} upper The upper bound.
     * @returns {number} Returns the clamped number.
     * @example
     *
     * _.clamp(-10, -5, 5);
     * // => -5
     *
     * _.clamp(10, -5, 5);
     * // => 5
     */
    function clamp(number, lower, upper) {
      if (upper === undefined) {
        upper = lower;
        lower = undefined;
      }
      if (upper !== undefined) {
        upper = toNumber(upper);
        upper = upper === upper ? upper : 0;
      }
      if (lower !== undefined) {
        lower = toNumber(lower);
        lower = lower === lower ? lower : 0;
      }
      return baseClamp(toNumber(number), lower, upper);
    }

    /**
     * Checks if `n` is between `start` and up to, but not including, `end`. If
     * `end` is not specified, it's set to `start` with `start` then set to `0`.
     * If `start` is greater than `end` the params are swapped to support
     * negative ranges.
     *
     * @static
     * @memberOf _
     * @since 3.3.0
     * @category Number
     * @param {number} number The number to check.
     * @param {number} [start=0] The start of the range.
     * @param {number} end The end of the range.
     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
     * @see _.range, _.rangeRight
     * @example
     *
     * _.inRange(3, 2, 4);
     * // => true
     *
     * _.inRange(4, 8);
     * // => true
     *
     * _.inRange(4, 2);
     * // => false
     *
     * _.inRange(2, 2);
     * // => false
     *
     * _.inRange(1.2, 2);
     * // => true
     *
     * _.inRange(5.2, 4);
     * // => false
     *
     * _.inRange(-3, -2, -6);
     * // => true
     */
    function inRange(number, start, end) {
      start = toFinite(start);
      if (end === undefined) {
        end = start;
        start = 0;
      } else {
        end = toFinite(end);
      }
      number = toNumber(number);
      return baseInRange(number, start, end);
    }

    /**
     * Produces a random number between the inclusive `lower` and `upper` bounds.
     * If only one argument is provided a number between `0` and the given number
     * is returned. If `floating` is `true`, or either `lower` or `upper` are
     * floats, a floating-point number is returned instead of an integer.
     *
     * **Note:** JavaScript follows the IEEE-754 standard for resolving
     * floating-point values which can produce unexpected results.
     *
     * @static
     * @memberOf _
     * @since 0.7.0
     * @category Number
     * @param {number} [lower=0] The lower bound.
     * @param {number} [upper=1] The upper bound.
     * @param {boolean} [floating] Specify returning a floating-point number.
     * @returns {number} Returns the random number.
     * @example
     *
     * _.random(0, 5);
     * // => an integer between 0 and 5
     *
     * _.random(5);
     * // => also an integer between 0 and 5
     *
     * _.random(5, true);
     * // => a floating-point number between 0 and 5
     *
     * _.random(1.2, 5.2);
     * // => a floating-point number between 1.2 and 5.2
     */
    function random(lower, upper, floating) {
      if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {
        upper = floating = undefined;
      }
      if (floating === undefined) {
        if (typeof upper == 'boolean') {
          floating = upper;
          upper = undefined;
        }
        else if (typeof lower == 'boolean') {
          floating = lower;
          lower = undefined;
        }
      }
      if (lower === undefined && upper === undefined) {
        lower = 0;
        upper = 1;
      }
      else {
        lower = toFinite(lower);
        if (upper === undefined) {
          upper = lower;
          lower = 0;
        } else {
          upper = toFinite(upper);
        }
      }
      if (lower > upper) {
        var temp = lower;
        lower = upper;
        upper = temp;
      }
      if (floating || lower % 1 || upper % 1) {
        var rand = nativeRandom();
        return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);
      }
      return baseRandom(lower, upper);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the camel cased string.
     * @example
     *
     * _.camelCase('Foo Bar');
     * // => 'fooBar'
     *
     * _.camelCase('--foo-bar--');
     * // => 'fooBar'
     *
     * _.camelCase('__FOO_BAR__');
     * // => 'fooBar'
     */
    var camelCase = createCompounder(function(result, word, index) {
      word = word.toLowerCase();
      return result + (index ? capitalize(word) : word);
    });

    /**
     * Converts the first character of `string` to upper case and the remaining
     * to lower case.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to capitalize.
     * @returns {string} Returns the capitalized string.
     * @example
     *
     * _.capitalize('FRED');
     * // => 'Fred'
     */
    function capitalize(string) {
      return upperFirst(toString(string).toLowerCase());
    }

    /**
     * Deburrs `string` by converting
     * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
     * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
     * letters to basic Latin letters and removing
     * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to deburr.
     * @returns {string} Returns the deburred string.
     * @example
     *
     * _.deburr('déjà vu');
     * // => 'deja vu'
     */
    function deburr(string) {
      string = toString(string);
      return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
    }

    /**
     * Checks if `string` ends with the given target string.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to inspect.
     * @param {string} [target] The string to search for.
     * @param {number} [position=string.length] The position to search up to.
     * @returns {boolean} Returns `true` if `string` ends with `target`,
     *  else `false`.
     * @example
     *
     * _.endsWith('abc', 'c');
     * // => true
     *
     * _.endsWith('abc', 'b');
     * // => false
     *
     * _.endsWith('abc', 'b', 2);
     * // => true
     */
    function endsWith(string, target, position) {
      string = toString(string);
      target = baseToString(target);

      var length = string.length;
      position = position === undefined
        ? length
        : baseClamp(toInteger(position), 0, length);

      var end = position;
      position -= target.length;
      return position >= 0 && string.slice(position, end) == target;
    }

    /**
     * Converts the characters "&", "<", ">", '"', and "'" in `string` to their
     * corresponding HTML entities.
     *
     * **Note:** No other characters are escaped. To escape additional
     * characters use a third-party library like [_he_](https://mths.be/he).
     *
     * Though the ">" character is escaped for symmetry, characters like
     * ">" and "/" don't need escaping in HTML and have no special meaning
     * unless they're part of a tag or unquoted attribute value. See
     * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)
     * (under "semi-related fun fact") for more details.
     *
     * When working with HTML you should always
     * [quote attribute values](http://wonko.com/post/html-escaping) to reduce
     * XSS vectors.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to escape.
     * @returns {string} Returns the escaped string.
     * @example
     *
     * _.escape('fred, barney, & pebbles');
     * // => 'fred, barney, &amp; pebbles'
     */
    function escape(string) {
      string = toString(string);
      return (string && reHasUnescapedHtml.test(string))
        ? string.replace(reUnescapedHtml, escapeHtmlChar)
        : string;
    }

    /**
     * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+",
     * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to escape.
     * @returns {string} Returns the escaped string.
     * @example
     *
     * _.escapeRegExp('[lodash](https://lodash.com/)');
     * // => '\[lodash\]\(https://lodash\.com/\)'
     */
    function escapeRegExp(string) {
      string = toString(string);
      return (string && reHasRegExpChar.test(string))
        ? string.replace(reRegExpChar, '\\$&')
        : string;
    }

    /**
     * Converts `string` to
     * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the kebab cased string.
     * @example
     *
     * _.kebabCase('Foo Bar');
     * // => 'foo-bar'
     *
     * _.kebabCase('fooBar');
     * // => 'foo-bar'
     *
     * _.kebabCase('__FOO_BAR__');
     * // => 'foo-bar'
     */
    var kebabCase = createCompounder(function(result, word, index) {
      return result + (index ? '-' : '') + word.toLowerCase();
    });

    /**
     * Converts `string`, as space separated words, to lower case.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the lower cased string.
     * @example
     *
     * _.lowerCase('--Foo-Bar--');
     * // => 'foo bar'
     *
     * _.lowerCase('fooBar');
     * // => 'foo bar'
     *
     * _.lowerCase('__FOO_BAR__');
     * // => 'foo bar'
     */
    var lowerCase = createCompounder(function(result, word, index) {
      return result + (index ? ' ' : '') + word.toLowerCase();
    });

    /**
     * Converts the first character of `string` to lower case.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the converted string.
     * @example
     *
     * _.lowerFirst('Fred');
     * // => 'fred'
     *
     * _.lowerFirst('FRED');
     * // => 'fRED'
     */
    var lowerFirst = createCaseFirst('toLowerCase');

    /**
     * Pads `string` on the left and right sides if it's shorter than `length`.
     * Padding characters are truncated if they can't be evenly divided by `length`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to pad.
     * @param {number} [length=0] The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padded string.
     * @example
     *
     * _.pad('abc', 8);
     * // => '  abc   '
     *
     * _.pad('abc', 8, '_-');
     * // => '_-abc_-_'
     *
     * _.pad('abc', 3);
     * // => 'abc'
     */
    function pad(string, length, chars) {
      string = toString(string);
      length = toInteger(length);

      var strLength = length ? stringSize(string) : 0;
      if (!length || strLength >= length) {
        return string;
      }
      var mid = (length - strLength) / 2;
      return (
        createPadding(nativeFloor(mid), chars) +
        string +
        createPadding(nativeCeil(mid), chars)
      );
    }

    /**
     * Pads `string` on the right side if it's shorter than `length`. Padding
     * characters are truncated if they exceed `length`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to pad.
     * @param {number} [length=0] The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padded string.
     * @example
     *
     * _.padEnd('abc', 6);
     * // => 'abc   '
     *
     * _.padEnd('abc', 6, '_-');
     * // => 'abc_-_'
     *
     * _.padEnd('abc', 3);
     * // => 'abc'
     */
    function padEnd(string, length, chars) {
      string = toString(string);
      length = toInteger(length);

      var strLength = length ? stringSize(string) : 0;
      return (length && strLength < length)
        ? (string + createPadding(length - strLength, chars))
        : string;
    }

    /**
     * Pads `string` on the left side if it's shorter than `length`. Padding
     * characters are truncated if they exceed `length`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to pad.
     * @param {number} [length=0] The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padded string.
     * @example
     *
     * _.padStart('abc', 6);
     * // => '   abc'
     *
     * _.padStart('abc', 6, '_-');
     * // => '_-_abc'
     *
     * _.padStart('abc', 3);
     * // => 'abc'
     */
    function padStart(string, length, chars) {
      string = toString(string);
      length = toInteger(length);

      var strLength = length ? stringSize(string) : 0;
      return (length && strLength < length)
        ? (createPadding(length - strLength, chars) + string)
        : string;
    }

    /**
     * Converts `string` to an integer of the specified radix. If `radix` is
     * `undefined` or `0`, a `radix` of `10` is used unless `value` is a
     * hexadecimal, in which case a `radix` of `16` is used.
     *
     * **Note:** This method aligns with the
     * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.
     *
     * @static
     * @memberOf _
     * @since 1.1.0
     * @category String
     * @param {string} string The string to convert.
     * @param {number} [radix=10] The radix to interpret `value` by.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.parseInt('08');
     * // => 8
     *
     * _.map(['6', '08', '10'], _.parseInt);
     * // => [6, 8, 10]
     */
    function parseInt(string, radix, guard) {
      if (guard || radix == null) {
        radix = 0;
      } else if (radix) {
        radix = +radix;
      }
      return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);
    }

    /**
     * Repeats the given string `n` times.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to repeat.
     * @param {number} [n=1] The number of times to repeat the string.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the repeated string.
     * @example
     *
     * _.repeat('*', 3);
     * // => '***'
     *
     * _.repeat('abc', 2);
     * // => 'abcabc'
     *
     * _.repeat('abc', 0);
     * // => ''
     */
    function repeat(string, n, guard) {
      if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {
        n = 1;
      } else {
        n = toInteger(n);
      }
      return baseRepeat(toString(string), n);
    }

    /**
     * Replaces matches for `pattern` in `string` with `replacement`.
     *
     * **Note:** This method is based on
     * [`String#replace`](https://mdn.io/String/replace).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to modify.
     * @param {RegExp|string} pattern The pattern to replace.
     * @param {Function|string} replacement The match replacement.
     * @returns {string} Returns the modified string.
     * @example
     *
     * _.replace('Hi Fred', 'Fred', 'Barney');
     * // => 'Hi Barney'
     */
    function replace() {
      var args = arguments,
          string = toString(args[0]);

      return args.length < 3 ? string : string.replace(args[1], args[2]);
    }

    /**
     * Converts `string` to
     * [snake case](https://en.wikipedia.org/wiki/Snake_case).
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the snake cased string.
     * @example
     *
     * _.snakeCase('Foo Bar');
     * // => 'foo_bar'
     *
     * _.snakeCase('fooBar');
     * // => 'foo_bar'
     *
     * _.snakeCase('--FOO-BAR--');
     * // => 'foo_bar'
     */
    var snakeCase = createCompounder(function(result, word, index) {
      return result + (index ? '_' : '') + word.toLowerCase();
    });

    /**
     * Splits `string` by `separator`.
     *
     * **Note:** This method is based on
     * [`String#split`](https://mdn.io/String/split).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to split.
     * @param {RegExp|string} separator The separator pattern to split by.
     * @param {number} [limit] The length to truncate results to.
     * @returns {Array} Returns the string segments.
     * @example
     *
     * _.split('a-b-c', '-', 2);
     * // => ['a', 'b']
     */
    function split(string, separator, limit) {
      if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {
        separator = limit = undefined;
      }
      limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;
      if (!limit) {
        return [];
      }
      string = toString(string);
      if (string && (
            typeof separator == 'string' ||
            (separator != null && !isRegExp(separator))
          )) {
        separator = baseToString(separator);
        if (!separator && hasUnicode(string)) {
          return castSlice(stringToArray(string), 0, limit);
        }
      }
      return string.split(separator, limit);
    }

    /**
     * Converts `string` to
     * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).
     *
     * @static
     * @memberOf _
     * @since 3.1.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the start cased string.
     * @example
     *
     * _.startCase('--foo-bar--');
     * // => 'Foo Bar'
     *
     * _.startCase('fooBar');
     * // => 'Foo Bar'
     *
     * _.startCase('__FOO_BAR__');
     * // => 'FOO BAR'
     */
    var startCase = createCompounder(function(result, word, index) {
      return result + (index ? ' ' : '') + upperFirst(word);
    });

    /**
     * Checks if `string` starts with the given target string.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to inspect.
     * @param {string} [target] The string to search for.
     * @param {number} [position=0] The position to search from.
     * @returns {boolean} Returns `true` if `string` starts with `target`,
     *  else `false`.
     * @example
     *
     * _.startsWith('abc', 'a');
     * // => true
     *
     * _.startsWith('abc', 'b');
     * // => false
     *
     * _.startsWith('abc', 'b', 1);
     * // => true
     */
    function startsWith(string, target, position) {
      string = toString(string);
      position = position == null
        ? 0
        : baseClamp(toInteger(position), 0, string.length);

      target = baseToString(target);
      return string.slice(position, position + target.length) == target;
    }

    /**
     * Creates a compiled template function that can interpolate data properties
     * in "interpolate" delimiters, HTML-escape interpolated data properties in
     * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data
     * properties may be accessed as free variables in the template. If a setting
     * object is given, it takes precedence over `_.templateSettings` values.
     *
     * **Note:** In the development build `_.template` utilizes
     * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
     * for easier debugging.
     *
     * For more information on precompiling templates see
     * [lodash's custom builds documentation](https://lodash.com/custom-builds).
     *
     * For more information on Chrome extension sandboxes see
     * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category String
     * @param {string} [string=''] The template string.
     * @param {Object} [options={}] The options object.
     * @param {RegExp} [options.escape=_.templateSettings.escape]
     *  The HTML "escape" delimiter.
     * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]
     *  The "evaluate" delimiter.
     * @param {Object} [options.imports=_.templateSettings.imports]
     *  An object to import into the template as free variables.
     * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]
     *  The "interpolate" delimiter.
     * @param {string} [options.sourceURL='lodash.templateSources[n]']
     *  The sourceURL of the compiled template.
     * @param {string} [options.variable='obj']
     *  The data object variable name.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Function} Returns the compiled template function.
     * @example
     *
     * // Use the "interpolate" delimiter to create a compiled template.
     * var compiled = _.template('hello <%= user %>!');
     * compiled({ 'user': 'fred' });
     * // => 'hello fred!'
     *
     * // Use the HTML "escape" delimiter to escape data property values.
     * var compiled = _.template('<b><%- value %></b>');
     * compiled({ 'value': '<script>' });
     * // => '<b>&lt;script&gt;</b>'
     *
     * // Use the "evaluate" delimiter to execute JavaScript and generate HTML.
     * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');
     * compiled({ 'users': ['fred', 'barney'] });
     * // => '<li>fred</li><li>barney</li>'
     *
     * // Use the internal `print` function in "evaluate" delimiters.
     * var compiled = _.template('<% print("hello " + user); %>!');
     * compiled({ 'user': 'barney' });
     * // => 'hello barney!'
     *
     * // Use the ES template literal delimiter as an "interpolate" delimiter.
     * // Disable support by replacing the "interpolate" delimiter.
     * var compiled = _.template('hello ${ user }!');
     * compiled({ 'user': 'pebbles' });
     * // => 'hello pebbles!'
     *
     * // Use backslashes to treat delimiters as plain text.
     * var compiled = _.template('<%= "\\<%- value %\\>" %>');
     * compiled({ 'value': 'ignored' });
     * // => '<%- value %>'
     *
     * // Use the `imports` option to import `jQuery` as `jq`.
     * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';
     * var compiled = _.template(text, { 'imports': { 'jq': jQuery } });
     * compiled({ 'users': ['fred', 'barney'] });
     * // => '<li>fred</li><li>barney</li>'
     *
     * // Use the `sourceURL` option to specify a custom sourceURL for the template.
     * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });
     * compiled(data);
     * // => Find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector.
     *
     * // Use the `variable` option to ensure a with-statement isn't used in the compiled template.
     * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });
     * compiled.source;
     * // => function(data) {
     * //   var __t, __p = '';
     * //   __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';
     * //   return __p;
     * // }
     *
     * // Use custom template delimiters.
     * _.templateSettings.interpolate = /{{([\s\S]+?)}}/g;
     * var compiled = _.template('hello {{ user }}!');
     * compiled({ 'user': 'mustache' });
     * // => 'hello mustache!'
     *
     * // Use the `source` property to inline compiled templates for meaningful
     * // line numbers in error messages and stack traces.
     * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\
     *   var JST = {\
     *     "main": ' + _.template(mainText).source + '\
     *   };\
     * ');
     */
    function template(string, options, guard) {
      // Based on John Resig's `tmpl` implementation
      // (http://ejohn.org/blog/javascript-micro-templating/)
      // and Laura Doktorova's doT.js (https://github.com/olado/doT).
      var settings = lodash.templateSettings;

      if (guard && isIterateeCall(string, options, guard)) {
        options = undefined;
      }
      string = toString(string);
      options = assignInWith({}, options, settings, customDefaultsAssignIn);

      var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),
          importsKeys = keys(imports),
          importsValues = baseValues(imports, importsKeys);

      var isEscaping,
          isEvaluating,
          index = 0,
          interpolate = options.interpolate || reNoMatch,
          source = "__p += '";

      // Compile the regexp to match each delimiter.
      var reDelimiters = RegExp(
        (options.escape || reNoMatch).source + '|' +
        interpolate.source + '|' +
        (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +
        (options.evaluate || reNoMatch).source + '|$'
      , 'g');

      // Use a sourceURL for easier debugging.
      // The sourceURL gets injected into the source that's eval-ed, so be careful
      // with lookup (in case of e.g. prototype pollution), and strip newlines if any.
      // A newline wouldn't be a valid sourceURL anyway, and it'd enable code injection.
      var sourceURL = '//# sourceURL=' +
        (hasOwnProperty.call(options, 'sourceURL')
          ? (options.sourceURL + '').replace(/[\r\n]/g, ' ')
          : ('lodash.templateSources[' + (++templateCounter) + ']')
        ) + '\n';

      string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
        interpolateValue || (interpolateValue = esTemplateValue);

        // Escape characters that can't be included in string literals.
        source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar);

        // Replace delimiters with snippets.
        if (escapeValue) {
          isEscaping = true;
          source += "' +\n__e(" + escapeValue + ") +\n'";
        }
        if (evaluateValue) {
          isEvaluating = true;
          source += "';\n" + evaluateValue + ";\n__p += '";
        }
        if (interpolateValue) {
          source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
        }
        index = offset + match.length;

        // The JS engine embedded in Adobe products needs `match` returned in
        // order to produce the correct `offset` value.
        return match;
      });

      source += "';\n";

      // If `variable` is not specified wrap a with-statement around the generated
      // code to add the data object to the top of the scope chain.
      // Like with sourceURL, we take care to not check the option's prototype,
      // as this configuration is a code injection vector.
      var variable = hasOwnProperty.call(options, 'variable') && options.variable;
      if (!variable) {
        source = 'with (obj) {\n' + source + '\n}\n';
      }
      // Cleanup code by stripping empty strings.
      source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)
        .replace(reEmptyStringMiddle, '$1')
        .replace(reEmptyStringTrailing, '$1;');

      // Frame code as the function body.
      source = 'function(' + (variable || 'obj') + ') {\n' +
        (variable
          ? ''
          : 'obj || (obj = {});\n'
        ) +
        "var __t, __p = ''" +
        (isEscaping
           ? ', __e = _.escape'
           : ''
        ) +
        (isEvaluating
          ? ', __j = Array.prototype.join;\n' +
            "function print() { __p += __j.call(arguments, '') }\n"
          : ';\n'
        ) +
        source +
        'return __p\n}';

      var result = attempt(function() {
        return Function(importsKeys, sourceURL + 'return ' + source)
          .apply(undefined, importsValues);
      });

      // Provide the compiled function's source by its `toString` method or
      // the `source` property as a convenience for inlining compiled templates.
      result.source = source;
      if (isError(result)) {
        throw result;
      }
      return result;
    }

    /**
     * Converts `string`, as a whole, to lower case just like
     * [String#toLowerCase](https://mdn.io/toLowerCase).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the lower cased string.
     * @example
     *
     * _.toLower('--Foo-Bar--');
     * // => '--foo-bar--'
     *
     * _.toLower('fooBar');
     * // => 'foobar'
     *
     * _.toLower('__FOO_BAR__');
     * // => '__foo_bar__'
     */
    function toLower(value) {
      return toString(value).toLowerCase();
    }

    /**
     * Converts `string`, as a whole, to upper case just like
     * [String#toUpperCase](https://mdn.io/toUpperCase).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the upper cased string.
     * @example
     *
     * _.toUpper('--foo-bar--');
     * // => '--FOO-BAR--'
     *
     * _.toUpper('fooBar');
     * // => 'FOOBAR'
     *
     * _.toUpper('__foo_bar__');
     * // => '__FOO_BAR__'
     */
    function toUpper(value) {
      return toString(value).toUpperCase();
    }

    /**
     * Removes leading and trailing whitespace or specified characters from `string`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to trim.
     * @param {string} [chars=whitespace] The characters to trim.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the trimmed string.
     * @example
     *
     * _.trim('  abc  ');
     * // => 'abc'
     *
     * _.trim('-_-abc-_-', '_-');
     * // => 'abc'
     *
     * _.map(['  foo  ', '  bar  '], _.trim);
     * // => ['foo', 'bar']
     */
    function trim(string, chars, guard) {
      string = toString(string);
      if (string && (guard || chars === undefined)) {
        return string.replace(reTrim, '');
      }
      if (!string || !(chars = baseToString(chars))) {
        return string;
      }
      var strSymbols = stringToArray(string),
          chrSymbols = stringToArray(chars),
          start = charsStartIndex(strSymbols, chrSymbols),
          end = charsEndIndex(strSymbols, chrSymbols) + 1;

      return castSlice(strSymbols, start, end).join('');
    }

    /**
     * Removes trailing whitespace or specified characters from `string`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to trim.
     * @param {string} [chars=whitespace] The characters to trim.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the trimmed string.
     * @example
     *
     * _.trimEnd('  abc  ');
     * // => '  abc'
     *
     * _.trimEnd('-_-abc-_-', '_-');
     * // => '-_-abc'
     */
    function trimEnd(string, chars, guard) {
      string = toString(string);
      if (string && (guard || chars === undefined)) {
        return string.replace(reTrimEnd, '');
      }
      if (!string || !(chars = baseToString(chars))) {
        return string;
      }
      var strSymbols = stringToArray(string),
          end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;

      return castSlice(strSymbols, 0, end).join('');
    }

    /**
     * Removes leading whitespace or specified characters from `string`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to trim.
     * @param {string} [chars=whitespace] The characters to trim.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the trimmed string.
     * @example
     *
     * _.trimStart('  abc  ');
     * // => 'abc  '
     *
     * _.trimStart('-_-abc-_-', '_-');
     * // => 'abc-_-'
     */
    function trimStart(string, chars, guard) {
      string = toString(string);
      if (string && (guard || chars === undefined)) {
        return string.replace(reTrimStart, '');
      }
      if (!string || !(chars = baseToString(chars))) {
        return string;
      }
      var strSymbols = stringToArray(string),
          start = charsStartIndex(strSymbols, stringToArray(chars));

      return castSlice(strSymbols, start).join('');
    }

    /**
     * Truncates `string` if it's longer than the given maximum string length.
     * The last characters of the truncated string are replaced with the omission
     * string which defaults to "...".
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to truncate.
     * @param {Object} [options={}] The options object.
     * @param {number} [options.length=30] The maximum string length.
     * @param {string} [options.omission='...'] The string to indicate text is omitted.
     * @param {RegExp|string} [options.separator] The separator pattern to truncate to.
     * @returns {string} Returns the truncated string.
     * @example
     *
     * _.truncate('hi-diddly-ho there, neighborino');
     * // => 'hi-diddly-ho there, neighbo...'
     *
     * _.truncate('hi-diddly-ho there, neighborino', {
     *   'length': 24,
     *   'separator': ' '
     * });
     * // => 'hi-diddly-ho there,...'
     *
     * _.truncate('hi-diddly-ho there, neighborino', {
     *   'length': 24,
     *   'separator': /,? +/
     * });
     * // => 'hi-diddly-ho there...'
     *
     * _.truncate('hi-diddly-ho there, neighborino', {
     *   'omission': ' [...]'
     * });
     * // => 'hi-diddly-ho there, neig [...]'
     */
    function truncate(string, options) {
      var length = DEFAULT_TRUNC_LENGTH,
          omission = DEFAULT_TRUNC_OMISSION;

      if (isObject(options)) {
        var separator = 'separator' in options ? options.separator : separator;
        length = 'length' in options ? toInteger(options.length) : length;
        omission = 'omission' in options ? baseToString(options.omission) : omission;
      }
      string = toString(string);

      var strLength = string.length;
      if (hasUnicode(string)) {
        var strSymbols = stringToArray(string);
        strLength = strSymbols.length;
      }
      if (length >= strLength) {
        return string;
      }
      var end = length - stringSize(omission);
      if (end < 1) {
        return omission;
      }
      var result = strSymbols
        ? castSlice(strSymbols, 0, end).join('')
        : string.slice(0, end);

      if (separator === undefined) {
        return result + omission;
      }
      if (strSymbols) {
        end += (result.length - end);
      }
      if (isRegExp(separator)) {
        if (string.slice(end).search(separator)) {
          var match,
              substring = result;

          if (!separator.global) {
            separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g');
          }
          separator.lastIndex = 0;
          while ((match = separator.exec(substring))) {
            var newEnd = match.index;
          }
          result = result.slice(0, newEnd === undefined ? end : newEnd);
        }
      } else if (string.indexOf(baseToString(separator), end) != end) {
        var index = result.lastIndexOf(separator);
        if (index > -1) {
          result = result.slice(0, index);
        }
      }
      return result + omission;
    }

    /**
     * The inverse of `_.escape`; this method converts the HTML entities
     * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to
     * their corresponding characters.
     *
     * **Note:** No other HTML entities are unescaped. To unescape additional
     * HTML entities use a third-party library like [_he_](https://mths.be/he).
     *
     * @static
     * @memberOf _
     * @since 0.6.0
     * @category String
     * @param {string} [string=''] The string to unescape.
     * @returns {string} Returns the unescaped string.
     * @example
     *
     * _.unescape('fred, barney, &amp; pebbles');
     * // => 'fred, barney, & pebbles'
     */
    function unescape(string) {
      string = toString(string);
      return (string && reHasEscapedHtml.test(string))
        ? string.replace(reEscapedHtml, unescapeHtmlChar)
        : string;
    }

    /**
     * Converts `string`, as space separated words, to upper case.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the upper cased string.
     * @example
     *
     * _.upperCase('--foo-bar');
     * // => 'FOO BAR'
     *
     * _.upperCase('fooBar');
     * // => 'FOO BAR'
     *
     * _.upperCase('__foo_bar__');
     * // => 'FOO BAR'
     */
    var upperCase = createCompounder(function(result, word, index) {
      return result + (index ? ' ' : '') + word.toUpperCase();
    });

    /**
     * Converts the first character of `string` to upper case.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the converted string.
     * @example
     *
     * _.upperFirst('fred');
     * // => 'Fred'
     *
     * _.upperFirst('FRED');
     * // => 'FRED'
     */
    var upperFirst = createCaseFirst('toUpperCase');

    /**
     * Splits `string` into an array of its words.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to inspect.
     * @param {RegExp|string} [pattern] The pattern to match words.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {Array} Returns the words of `string`.
     * @example
     *
     * _.words('fred, barney, & pebbles');
     * // => ['fred', 'barney', 'pebbles']
     *
     * _.words('fred, barney, & pebbles', /[^, ]+/g);
     * // => ['fred', 'barney', '&', 'pebbles']
     */
    function words(string, pattern, guard) {
      string = toString(string);
      pattern = guard ? undefined : pattern;

      if (pattern === undefined) {
        return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);
      }
      return string.match(pattern) || [];
    }

    /*------------------------------------------------------------------------*/

    /**
     * Attempts to invoke `func`, returning either the result or the caught error
     * object. Any additional arguments are provided to `func` when it's invoked.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Util
     * @param {Function} func The function to attempt.
     * @param {...*} [args] The arguments to invoke `func` with.
     * @returns {*} Returns the `func` result or error object.
     * @example
     *
     * // Avoid throwing errors for invalid selectors.
     * var elements = _.attempt(function(selector) {
     *   return document.querySelectorAll(selector);
     * }, '>_>');
     *
     * if (_.isError(elements)) {
     *   elements = [];
     * }
     */
    var attempt = baseRest(function(func, args) {
      try {
        return apply(func, undefined, args);
      } catch (e) {
        return isError(e) ? e : new Error(e);
      }
    });

    /**
     * Binds methods of an object to the object itself, overwriting the existing
     * method.
     *
     * **Note:** This method doesn't set the "length" property of bound functions.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {Object} object The object to bind and assign the bound methods to.
     * @param {...(string|string[])} methodNames The object method names to bind.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var view = {
     *   'label': 'docs',
     *   'click': function() {
     *     console.log('clicked ' + this.label);
     *   }
     * };
     *
     * _.bindAll(view, ['click']);
     * jQuery(element).on('click', view.click);
     * // => Logs 'clicked docs' when clicked.
     */
    var bindAll = flatRest(function(object, methodNames) {
      arrayEach(methodNames, function(key) {
        key = toKey(key);
        baseAssignValue(object, key, bind(object[key], object));
      });
      return object;
    });

    /**
     * Creates a function that iterates over `pairs` and invokes the corresponding
     * function of the first predicate to return truthy. The predicate-function
     * pairs are invoked with the `this` binding and arguments of the created
     * function.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {Array} pairs The predicate-function pairs.
     * @returns {Function} Returns the new composite function.
     * @example
     *
     * var func = _.cond([
     *   [_.matches({ 'a': 1 }),           _.constant('matches A')],
     *   [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],
     *   [_.stubTrue,                      _.constant('no match')]
     * ]);
     *
     * func({ 'a': 1, 'b': 2 });
     * // => 'matches A'
     *
     * func({ 'a': 0, 'b': 1 });
     * // => 'matches B'
     *
     * func({ 'a': '1', 'b': '2' });
     * // => 'no match'
     */
    function cond(pairs) {
      var length = pairs == null ? 0 : pairs.length,
          toIteratee = getIteratee();

      pairs = !length ? [] : arrayMap(pairs, function(pair) {
        if (typeof pair[1] != 'function') {
          throw new TypeError(FUNC_ERROR_TEXT);
        }
        return [toIteratee(pair[0]), pair[1]];
      });

      return baseRest(function(args) {
        var index = -1;
        while (++index < length) {
          var pair = pairs[index];
          if (apply(pair[0], this, args)) {
            return apply(pair[1], this, args);
          }
        }
      });
    }

    /**
     * Creates a function that invokes the predicate properties of `source` with
     * the corresponding property values of a given object, returning `true` if
     * all predicates return truthy, else `false`.
     *
     * **Note:** The created function is equivalent to `_.conformsTo` with
     * `source` partially applied.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {Object} source The object of property predicates to conform to.
     * @returns {Function} Returns the new spec function.
     * @example
     *
     * var objects = [
     *   { 'a': 2, 'b': 1 },
     *   { 'a': 1, 'b': 2 }
     * ];
     *
     * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } }));
     * // => [{ 'a': 1, 'b': 2 }]
     */
    function conforms(source) {
      return baseConforms(baseClone(source, CLONE_DEEP_FLAG));
    }

    /**
     * Creates a function that returns `value`.
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Util
     * @param {*} value The value to return from the new function.
     * @returns {Function} Returns the new constant function.
     * @example
     *
     * var objects = _.times(2, _.constant({ 'a': 1 }));
     *
     * console.log(objects);
     * // => [{ 'a': 1 }, { 'a': 1 }]
     *
     * console.log(objects[0] === objects[1]);
     * // => true
     */
    function constant(value) {
      return function() {
        return value;
      };
    }

    /**
     * Checks `value` to determine whether a default value should be returned in
     * its place. The `defaultValue` is returned if `value` is `NaN`, `null`,
     * or `undefined`.
     *
     * @static
     * @memberOf _
     * @since 4.14.0
     * @category Util
     * @param {*} value The value to check.
     * @param {*} defaultValue The default value.
     * @returns {*} Returns the resolved value.
     * @example
     *
     * _.defaultTo(1, 10);
     * // => 1
     *
     * _.defaultTo(undefined, 10);
     * // => 10
     */
    function defaultTo(value, defaultValue) {
      return (value == null || value !== value) ? defaultValue : value;
    }

    /**
     * Creates a function that returns the result of invoking the given functions
     * with the `this` binding of the created function, where each successive
     * invocation is supplied the return value of the previous.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Util
     * @param {...(Function|Function[])} [funcs] The functions to invoke.
     * @returns {Function} Returns the new composite function.
     * @see _.flowRight
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var addSquare = _.flow([_.add, square]);
     * addSquare(1, 2);
     * // => 9
     */
    var flow = createFlow();

    /**
     * This method is like `_.flow` except that it creates a function that
     * invokes the given functions from right to left.
     *
     * @static
     * @since 3.0.0
     * @memberOf _
     * @category Util
     * @param {...(Function|Function[])} [funcs] The functions to invoke.
     * @returns {Function} Returns the new composite function.
     * @see _.flow
     * @example
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var addSquare = _.flowRight([square, _.add]);
     * addSquare(1, 2);
     * // => 9
     */
    var flowRight = createFlow(true);

    /**
     * This method returns the first argument it receives.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {*} value Any value.
     * @returns {*} Returns `value`.
     * @example
     *
     * var object = { 'a': 1 };
     *
     * console.log(_.identity(object) === object);
     * // => true
     */
    function identity(value) {
      return value;
    }

    /**
     * Creates a function that invokes `func` with the arguments of the created
     * function. If `func` is a property name, the created function returns the
     * property value for a given element. If `func` is an array or object, the
     * created function returns `true` for elements that contain the equivalent
     * source properties, otherwise it returns `false`.
     *
     * @static
     * @since 4.0.0
     * @memberOf _
     * @category Util
     * @param {*} [func=_.identity] The value to convert to a callback.
     * @returns {Function} Returns the callback.
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': true },
     *   { 'user': 'fred',   'age': 40, 'active': false }
     * ];
     *
     * // The `_.matches` iteratee shorthand.
     * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));
     * // => [{ 'user': 'barney', 'age': 36, 'active': true }]
     *
     * // The `_.matchesProperty` iteratee shorthand.
     * _.filter(users, _.iteratee(['user', 'fred']));
     * // => [{ 'user': 'fred', 'age': 40 }]
     *
     * // The `_.property` iteratee shorthand.
     * _.map(users, _.iteratee('user'));
     * // => ['barney', 'fred']
     *
     * // Create custom iteratee shorthands.
     * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {
     *   return !_.isRegExp(func) ? iteratee(func) : function(string) {
     *     return func.test(string);
     *   };
     * });
     *
     * _.filter(['abc', 'def'], /ef/);
     * // => ['def']
     */
    function iteratee(func) {
      return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));
    }

    /**
     * Creates a function that performs a partial deep comparison between a given
     * object and `source`, returning `true` if the given object has equivalent
     * property values, else `false`.
     *
     * **Note:** The created function is equivalent to `_.isMatch` with `source`
     * partially applied.
     *
     * Partial comparisons will match empty array and empty object `source`
     * values against any array or object value, respectively. See `_.isEqual`
     * for a list of supported value comparisons.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Util
     * @param {Object} source The object of property values to match.
     * @returns {Function} Returns the new spec function.
     * @example
     *
     * var objects = [
     *   { 'a': 1, 'b': 2, 'c': 3 },
     *   { 'a': 4, 'b': 5, 'c': 6 }
     * ];
     *
     * _.filter(objects, _.matches({ 'a': 4, 'c': 6 }));
     * // => [{ 'a': 4, 'b': 5, 'c': 6 }]
     */
    function matches(source) {
      return baseMatches(baseClone(source, CLONE_DEEP_FLAG));
    }

    /**
     * Creates a function that performs a partial deep comparison between the
     * value at `path` of a given object to `srcValue`, returning `true` if the
     * object value is equivalent, else `false`.
     *
     * **Note:** Partial comparisons will match empty array and empty object
     * `srcValue` values against any array or object value, respectively. See
     * `_.isEqual` for a list of supported value comparisons.
     *
     * @static
     * @memberOf _
     * @since 3.2.0
     * @category Util
     * @param {Array|string} path The path of the property to get.
     * @param {*} srcValue The value to match.
     * @returns {Function} Returns the new spec function.
     * @example
     *
     * var objects = [
     *   { 'a': 1, 'b': 2, 'c': 3 },
     *   { 'a': 4, 'b': 5, 'c': 6 }
     * ];
     *
     * _.find(objects, _.matchesProperty('a', 4));
     * // => { 'a': 4, 'b': 5, 'c': 6 }
     */
    function matchesProperty(path, srcValue) {
      return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG));
    }

    /**
     * Creates a function that invokes the method at `path` of a given object.
     * Any additional arguments are provided to the invoked method.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Util
     * @param {Array|string} path The path of the method to invoke.
     * @param {...*} [args] The arguments to invoke the method with.
     * @returns {Function} Returns the new invoker function.
     * @example
     *
     * var objects = [
     *   { 'a': { 'b': _.constant(2) } },
     *   { 'a': { 'b': _.constant(1) } }
     * ];
     *
     * _.map(objects, _.method('a.b'));
     * // => [2, 1]
     *
     * _.map(objects, _.method(['a', 'b']));
     * // => [2, 1]
     */
    var method = baseRest(function(path, args) {
      return function(object) {
        return baseInvoke(object, path, args);
      };
    });

    /**
     * The opposite of `_.method`; this method creates a function that invokes
     * the method at a given path of `object`. Any additional arguments are
     * provided to the invoked method.
     *
     * @static
     * @memberOf _
     * @since 3.7.0
     * @category Util
     * @param {Object} object The object to query.
     * @param {...*} [args] The arguments to invoke the method with.
     * @returns {Function} Returns the new invoker function.
     * @example
     *
     * var array = _.times(3, _.constant),
     *     object = { 'a': array, 'b': array, 'c': array };
     *
     * _.map(['a[2]', 'c[0]'], _.methodOf(object));
     * // => [2, 0]
     *
     * _.map([['a', '2'], ['c', '0']], _.methodOf(object));
     * // => [2, 0]
     */
    var methodOf = baseRest(function(object, args) {
      return function(path) {
        return baseInvoke(object, path, args);
      };
    });

    /**
     * Adds all own enumerable string keyed function properties of a source
     * object to the destination object. If `object` is a function, then methods
     * are added to its prototype as well.
     *
     * **Note:** Use `_.runInContext` to create a pristine `lodash` function to
     * avoid conflicts caused by modifying the original.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {Function|Object} [object=lodash] The destination object.
     * @param {Object} source The object of functions to add.
     * @param {Object} [options={}] The options object.
     * @param {boolean} [options.chain=true] Specify whether mixins are chainable.
     * @returns {Function|Object} Returns `object`.
     * @example
     *
     * function vowels(string) {
     *   return _.filter(string, function(v) {
     *     return /[aeiou]/i.test(v);
     *   });
     * }
     *
     * _.mixin({ 'vowels': vowels });
     * _.vowels('fred');
     * // => ['e']
     *
     * _('fred').vowels().value();
     * // => ['e']
     *
     * _.mixin({ 'vowels': vowels }, { 'chain': false });
     * _('fred').vowels();
     * // => ['e']
     */
    function mixin(object, source, options) {
      var props = keys(source),
          methodNames = baseFunctions(source, props);

      if (options == null &&
          !(isObject(source) && (methodNames.length || !props.length))) {
        options = source;
        source = object;
        object = this;
        methodNames = baseFunctions(source, keys(source));
      }
      var chain = !(isObject(options) && 'chain' in options) || !!options.chain,
          isFunc = isFunction(object);

      arrayEach(methodNames, function(methodName) {
        var func = source[methodName];
        object[methodName] = func;
        if (isFunc) {
          object.prototype[methodName] = function() {
            var chainAll = this.__chain__;
            if (chain || chainAll) {
              var result = object(this.__wrapped__),
                  actions = result.__actions__ = copyArray(this.__actions__);

              actions.push({ 'func': func, 'args': arguments, 'thisArg': object });
              result.__chain__ = chainAll;
              return result;
            }
            return func.apply(object, arrayPush([this.value()], arguments));
          };
        }
      });

      return object;
    }

    /**
     * Reverts the `_` variable to its previous value and returns a reference to
     * the `lodash` function.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @returns {Function} Returns the `lodash` function.
     * @example
     *
     * var lodash = _.noConflict();
     */
    function noConflict() {
      if (root._ === this) {
        root._ = oldDash;
      }
      return this;
    }

    /**
     * This method returns `undefined`.
     *
     * @static
     * @memberOf _
     * @since 2.3.0
     * @category Util
     * @example
     *
     * _.times(2, _.noop);
     * // => [undefined, undefined]
     */
    function noop() {
      // No operation performed.
    }

    /**
     * Creates a function that gets the argument at index `n`. If `n` is negative,
     * the nth argument from the end is returned.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {number} [n=0] The index of the argument to return.
     * @returns {Function} Returns the new pass-thru function.
     * @example
     *
     * var func = _.nthArg(1);
     * func('a', 'b', 'c', 'd');
     * // => 'b'
     *
     * var func = _.nthArg(-2);
     * func('a', 'b', 'c', 'd');
     * // => 'c'
     */
    function nthArg(n) {
      n = toInteger(n);
      return baseRest(function(args) {
        return baseNth(args, n);
      });
    }

    /**
     * Creates a function that invokes `iteratees` with the arguments it receives
     * and returns their results.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {...(Function|Function[])} [iteratees=[_.identity]]
     *  The iteratees to invoke.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var func = _.over([Math.max, Math.min]);
     *
     * func(1, 2, 3, 4);
     * // => [4, 1]
     */
    var over = createOver(arrayMap);

    /**
     * Creates a function that checks if **all** of the `predicates` return
     * truthy when invoked with the arguments it receives.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {...(Function|Function[])} [predicates=[_.identity]]
     *  The predicates to check.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var func = _.overEvery([Boolean, isFinite]);
     *
     * func('1');
     * // => true
     *
     * func(null);
     * // => false
     *
     * func(NaN);
     * // => false
     */
    var overEvery = createOver(arrayEvery);

    /**
     * Creates a function that checks if **any** of the `predicates` return
     * truthy when invoked with the arguments it receives.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {...(Function|Function[])} [predicates=[_.identity]]
     *  The predicates to check.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var func = _.overSome([Boolean, isFinite]);
     *
     * func('1');
     * // => true
     *
     * func(null);
     * // => true
     *
     * func(NaN);
     * // => false
     */
    var overSome = createOver(arraySome);

    /**
     * Creates a function that returns the value at `path` of a given object.
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Util
     * @param {Array|string} path The path of the property to get.
     * @returns {Function} Returns the new accessor function.
     * @example
     *
     * var objects = [
     *   { 'a': { 'b': 2 } },
     *   { 'a': { 'b': 1 } }
     * ];
     *
     * _.map(objects, _.property('a.b'));
     * // => [2, 1]
     *
     * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');
     * // => [1, 2]
     */
    function property(path) {
      return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);
    }

    /**
     * The opposite of `_.property`; this method creates a function that returns
     * the value at a given path of `object`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Util
     * @param {Object} object The object to query.
     * @returns {Function} Returns the new accessor function.
     * @example
     *
     * var array = [0, 1, 2],
     *     object = { 'a': array, 'b': array, 'c': array };
     *
     * _.map(['a[2]', 'c[0]'], _.propertyOf(object));
     * // => [2, 0]
     *
     * _.map([['a', '2'], ['c', '0']], _.propertyOf(object));
     * // => [2, 0]
     */
    function propertyOf(object) {
      return function(path) {
        return object == null ? undefined : baseGet(object, path);
      };
    }

    /**
     * Creates an array of numbers (positive and/or negative) progressing from
     * `start` up to, but not including, `end`. A step of `-1` is used if a negative
     * `start` is specified without an `end` or `step`. If `end` is not specified,
     * it's set to `start` with `start` then set to `0`.
     *
     * **Note:** JavaScript follows the IEEE-754 standard for resolving
     * floating-point values which can produce unexpected results.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {number} [start=0] The start of the range.
     * @param {number} end The end of the range.
     * @param {number} [step=1] The value to increment or decrement by.
     * @returns {Array} Returns the range of numbers.
     * @see _.inRange, _.rangeRight
     * @example
     *
     * _.range(4);
     * // => [0, 1, 2, 3]
     *
     * _.range(-4);
     * // => [0, -1, -2, -3]
     *
     * _.range(1, 5);
     * // => [1, 2, 3, 4]
     *
     * _.range(0, 20, 5);
     * // => [0, 5, 10, 15]
     *
     * _.range(0, -4, -1);
     * // => [0, -1, -2, -3]
     *
     * _.range(1, 4, 0);
     * // => [1, 1, 1]
     *
     * _.range(0);
     * // => []
     */
    var range = createRange();

    /**
     * This method is like `_.range` except that it populates values in
     * descending order.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {number} [start=0] The start of the range.
     * @param {number} end The end of the range.
     * @param {number} [step=1] The value to increment or decrement by.
     * @returns {Array} Returns the range of numbers.
     * @see _.inRange, _.range
     * @example
     *
     * _.rangeRight(4);
     * // => [3, 2, 1, 0]
     *
     * _.rangeRight(-4);
     * // => [-3, -2, -1, 0]
     *
     * _.rangeRight(1, 5);
     * // => [4, 3, 2, 1]
     *
     * _.rangeRight(0, 20, 5);
     * // => [15, 10, 5, 0]
     *
     * _.rangeRight(0, -4, -1);
     * // => [-3, -2, -1, 0]
     *
     * _.rangeRight(1, 4, 0);
     * // => [1, 1, 1]
     *
     * _.rangeRight(0);
     * // => []
     */
    var rangeRight = createRange(true);

    /**
     * This method returns a new empty array.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {Array} Returns the new empty array.
     * @example
     *
     * var arrays = _.times(2, _.stubArray);
     *
     * console.log(arrays);
     * // => [[], []]
     *
     * console.log(arrays[0] === arrays[1]);
     * // => false
     */
    function stubArray() {
      return [];
    }

    /**
     * This method returns `false`.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {boolean} Returns `false`.
     * @example
     *
     * _.times(2, _.stubFalse);
     * // => [false, false]
     */
    function stubFalse() {
      return false;
    }

    /**
     * This method returns a new empty object.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {Object} Returns the new empty object.
     * @example
     *
     * var objects = _.times(2, _.stubObject);
     *
     * console.log(objects);
     * // => [{}, {}]
     *
     * console.log(objects[0] === objects[1]);
     * // => false
     */
    function stubObject() {
      return {};
    }

    /**
     * This method returns an empty string.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {string} Returns the empty string.
     * @example
     *
     * _.times(2, _.stubString);
     * // => ['', '']
     */
    function stubString() {
      return '';
    }

    /**
     * This method returns `true`.
     *
     * @static
     * @memberOf _
     * @since 4.13.0
     * @category Util
     * @returns {boolean} Returns `true`.
     * @example
     *
     * _.times(2, _.stubTrue);
     * // => [true, true]
     */
    function stubTrue() {
      return true;
    }

    /**
     * Invokes the iteratee `n` times, returning an array of the results of
     * each invocation. The iteratee is invoked with one argument; (index).
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {number} n The number of times to invoke `iteratee`.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @returns {Array} Returns the array of results.
     * @example
     *
     * _.times(3, String);
     * // => ['0', '1', '2']
     *
     *  _.times(4, _.constant(0));
     * // => [0, 0, 0, 0]
     */
    function times(n, iteratee) {
      n = toInteger(n);
      if (n < 1 || n > MAX_SAFE_INTEGER) {
        return [];
      }
      var index = MAX_ARRAY_LENGTH,
          length = nativeMin(n, MAX_ARRAY_LENGTH);

      iteratee = getIteratee(iteratee);
      n -= MAX_ARRAY_LENGTH;

      var result = baseTimes(length, iteratee);
      while (++index < n) {
        iteratee(index);
      }
      return result;
    }

    /**
     * Converts `value` to a property path array.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Util
     * @param {*} value The value to convert.
     * @returns {Array} Returns the new property path array.
     * @example
     *
     * _.toPath('a.b.c');
     * // => ['a', 'b', 'c']
     *
     * _.toPath('a[0].b.c');
     * // => ['a', '0', 'b', 'c']
     */
    function toPath(value) {
      if (isArray(value)) {
        return arrayMap(value, toKey);
      }
      return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));
    }

    /**
     * Generates a unique ID. If `prefix` is given, the ID is appended to it.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {string} [prefix=''] The value to prefix the ID with.
     * @returns {string} Returns the unique ID.
     * @example
     *
     * _.uniqueId('contact_');
     * // => 'contact_104'
     *
     * _.uniqueId();
     * // => '105'
     */
    function uniqueId(prefix) {
      var id = ++idCounter;
      return toString(prefix) + id;
    }

    /*------------------------------------------------------------------------*/

    /**
     * Adds two numbers.
     *
     * @static
     * @memberOf _
     * @since 3.4.0
     * @category Math
     * @param {number} augend The first number in an addition.
     * @param {number} addend The second number in an addition.
     * @returns {number} Returns the total.
     * @example
     *
     * _.add(6, 4);
     * // => 10
     */
    var add = createMathOperation(function(augend, addend) {
      return augend + addend;
    }, 0);

    /**
     * Computes `number` rounded up to `precision`.
     *
     * @static
     * @memberOf _
     * @since 3.10.0
     * @category Math
     * @param {number} number The number to round up.
     * @param {number} [precision=0] The precision to round up to.
     * @returns {number} Returns the rounded up number.
     * @example
     *
     * _.ceil(4.006);
     * // => 5
     *
     * _.ceil(6.004, 2);
     * // => 6.01
     *
     * _.ceil(6040, -2);
     * // => 6100
     */
    var ceil = createRound('ceil');

    /**
     * Divide two numbers.
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Math
     * @param {number} dividend The first number in a division.
     * @param {number} divisor The second number in a division.
     * @returns {number} Returns the quotient.
     * @example
     *
     * _.divide(6, 4);
     * // => 1.5
     */
    var divide = createMathOperation(function(dividend, divisor) {
      return dividend / divisor;
    }, 1);

    /**
     * Computes `number` rounded down to `precision`.
     *
     * @static
     * @memberOf _
     * @since 3.10.0
     * @category Math
     * @param {number} number The number to round down.
     * @param {number} [precision=0] The precision to round down to.
     * @returns {number} Returns the rounded down number.
     * @example
     *
     * _.floor(4.006);
     * // => 4
     *
     * _.floor(0.046, 2);
     * // => 0.04
     *
     * _.floor(4060, -2);
     * // => 4000
     */
    var floor = createRound('floor');

    /**
     * Computes the maximum value of `array`. If `array` is empty or falsey,
     * `undefined` is returned.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Math
     * @param {Array} array The array to iterate over.
     * @returns {*} Returns the maximum value.
     * @example
     *
     * _.max([4, 2, 8, 6]);
     * // => 8
     *
     * _.max([]);
     * // => undefined
     */
    function max(array) {
      return (array && array.length)
        ? baseExtremum(array, identity, baseGt)
        : undefined;
    }

    /**
     * This method is like `_.max` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the criterion by which
     * the value is ranked. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {*} Returns the maximum value.
     * @example
     *
     * var objects = [{ 'n': 1 }, { 'n': 2 }];
     *
     * _.maxBy(objects, function(o) { return o.n; });
     * // => { 'n': 2 }
     *
     * // The `_.property` iteratee shorthand.
     * _.maxBy(objects, 'n');
     * // => { 'n': 2 }
     */
    function maxBy(array, iteratee) {
      return (array && array.length)
        ? baseExtremum(array, getIteratee(iteratee, 2), baseGt)
        : undefined;
    }

    /**
     * Computes the mean of the values in `array`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @returns {number} Returns the mean.
     * @example
     *
     * _.mean([4, 2, 8, 6]);
     * // => 5
     */
    function mean(array) {
      return baseMean(array, identity);
    }

    /**
     * This method is like `_.mean` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the value to be averaged.
     * The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {number} Returns the mean.
     * @example
     *
     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
     *
     * _.meanBy(objects, function(o) { return o.n; });
     * // => 5
     *
     * // The `_.property` iteratee shorthand.
     * _.meanBy(objects, 'n');
     * // => 5
     */
    function meanBy(array, iteratee) {
      return baseMean(array, getIteratee(iteratee, 2));
    }

    /**
     * Computes the minimum value of `array`. If `array` is empty or falsey,
     * `undefined` is returned.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Math
     * @param {Array} array The array to iterate over.
     * @returns {*} Returns the minimum value.
     * @example
     *
     * _.min([4, 2, 8, 6]);
     * // => 2
     *
     * _.min([]);
     * // => undefined
     */
    function min(array) {
      return (array && array.length)
        ? baseExtremum(array, identity, baseLt)
        : undefined;
    }

    /**
     * This method is like `_.min` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the criterion by which
     * the value is ranked. The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {*} Returns the minimum value.
     * @example
     *
     * var objects = [{ 'n': 1 }, { 'n': 2 }];
     *
     * _.minBy(objects, function(o) { return o.n; });
     * // => { 'n': 1 }
     *
     * // The `_.property` iteratee shorthand.
     * _.minBy(objects, 'n');
     * // => { 'n': 1 }
     */
    function minBy(array, iteratee) {
      return (array && array.length)
        ? baseExtremum(array, getIteratee(iteratee, 2), baseLt)
        : undefined;
    }

    /**
     * Multiply two numbers.
     *
     * @static
     * @memberOf _
     * @since 4.7.0
     * @category Math
     * @param {number} multiplier The first number in a multiplication.
     * @param {number} multiplicand The second number in a multiplication.
     * @returns {number} Returns the product.
     * @example
     *
     * _.multiply(6, 4);
     * // => 24
     */
    var multiply = createMathOperation(function(multiplier, multiplicand) {
      return multiplier * multiplicand;
    }, 1);

    /**
     * Computes `number` rounded to `precision`.
     *
     * @static
     * @memberOf _
     * @since 3.10.0
     * @category Math
     * @param {number} number The number to round.
     * @param {number} [precision=0] The precision to round to.
     * @returns {number} Returns the rounded number.
     * @example
     *
     * _.round(4.006);
     * // => 4
     *
     * _.round(4.006, 2);
     * // => 4.01
     *
     * _.round(4060, -2);
     * // => 4100
     */
    var round = createRound('round');

    /**
     * Subtract two numbers.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {number} minuend The first number in a subtraction.
     * @param {number} subtrahend The second number in a subtraction.
     * @returns {number} Returns the difference.
     * @example
     *
     * _.subtract(6, 4);
     * // => 2
     */
    var subtract = createMathOperation(function(minuend, subtrahend) {
      return minuend - subtrahend;
    }, 0);

    /**
     * Computes the sum of the values in `array`.
     *
     * @static
     * @memberOf _
     * @since 3.4.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @returns {number} Returns the sum.
     * @example
     *
     * _.sum([4, 2, 8, 6]);
     * // => 20
     */
    function sum(array) {
      return (array && array.length)
        ? baseSum(array, identity)
        : 0;
    }

    /**
     * This method is like `_.sum` except that it accepts `iteratee` which is
     * invoked for each element in `array` to generate the value to be summed.
     * The iteratee is invoked with one argument: (value).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Math
     * @param {Array} array The array to iterate over.
     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
     * @returns {number} Returns the sum.
     * @example
     *
     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
     *
     * _.sumBy(objects, function(o) { return o.n; });
     * // => 20
     *
     * // The `_.property` iteratee shorthand.
     * _.sumBy(objects, 'n');
     * // => 20
     */
    function sumBy(array, iteratee) {
      return (array && array.length)
        ? baseSum(array, getIteratee(iteratee, 2))
        : 0;
    }

    /*------------------------------------------------------------------------*/

    // Add methods that return wrapped values in chain sequences.
    lodash.after = after;
    lodash.ary = ary;
    lodash.assign = assign;
    lodash.assignIn = assignIn;
    lodash.assignInWith = assignInWith;
    lodash.assignWith = assignWith;
    lodash.at = at;
    lodash.before = before;
    lodash.bind = bind;
    lodash.bindAll = bindAll;
    lodash.bindKey = bindKey;
    lodash.castArray = castArray;
    lodash.chain = chain;
    lodash.chunk = chunk;
    lodash.compact = compact;
    lodash.concat = concat;
    lodash.cond = cond;
    lodash.conforms = conforms;
    lodash.constant = constant;
    lodash.countBy = countBy;
    lodash.create = create;
    lodash.curry = curry;
    lodash.curryRight = curryRight;
    lodash.debounce = debounce;
    lodash.defaults = defaults;
    lodash.defaultsDeep = defaultsDeep;
    lodash.defer = defer;
    lodash.delay = delay;
    lodash.difference = difference;
    lodash.differenceBy = differenceBy;
    lodash.differenceWith = differenceWith;
    lodash.drop = drop;
    lodash.dropRight = dropRight;
    lodash.dropRightWhile = dropRightWhile;
    lodash.dropWhile = dropWhile;
    lodash.fill = fill;
    lodash.filter = filter;
    lodash.flatMap = flatMap;
    lodash.flatMapDeep = flatMapDeep;
    lodash.flatMapDepth = flatMapDepth;
    lodash.flatten = flatten;
    lodash.flattenDeep = flattenDeep;
    lodash.flattenDepth = flattenDepth;
    lodash.flip = flip;
    lodash.flow = flow;
    lodash.flowRight = flowRight;
    lodash.fromPairs = fromPairs;
    lodash.functions = functions;
    lodash.functionsIn = functionsIn;
    lodash.groupBy = groupBy;
    lodash.initial = initial;
    lodash.intersection = intersection;
    lodash.intersectionBy = intersectionBy;
    lodash.intersectionWith = intersectionWith;
    lodash.invert = invert;
    lodash.invertBy = invertBy;
    lodash.invokeMap = invokeMap;
    lodash.iteratee = iteratee;
    lodash.keyBy = keyBy;
    lodash.keys = keys;
    lodash.keysIn = keysIn;
    lodash.map = map;
    lodash.mapKeys = mapKeys;
    lodash.mapValues = mapValues;
    lodash.matches = matches;
    lodash.matchesProperty = matchesProperty;
    lodash.memoize = memoize;
    lodash.merge = merge;
    lodash.mergeWith = mergeWith;
    lodash.method = method;
    lodash.methodOf = methodOf;
    lodash.mixin = mixin;
    lodash.negate = negate;
    lodash.nthArg = nthArg;
    lodash.omit = omit;
    lodash.omitBy = omitBy;
    lodash.once = once;
    lodash.orderBy = orderBy;
    lodash.over = over;
    lodash.overArgs = overArgs;
    lodash.overEvery = overEvery;
    lodash.overSome = overSome;
    lodash.partial = partial;
    lodash.partialRight = partialRight;
    lodash.partition = partition;
    lodash.pick = pick;
    lodash.pickBy = pickBy;
    lodash.property = property;
    lodash.propertyOf = propertyOf;
    lodash.pull = pull;
    lodash.pullAll = pullAll;
    lodash.pullAllBy = pullAllBy;
    lodash.pullAllWith = pullAllWith;
    lodash.pullAt = pullAt;
    lodash.range = range;
    lodash.rangeRight = rangeRight;
    lodash.rearg = rearg;
    lodash.reject = reject;
    lodash.remove = remove;
    lodash.rest = rest;
    lodash.reverse = reverse;
    lodash.sampleSize = sampleSize;
    lodash.set = set;
    lodash.setWith = setWith;
    lodash.shuffle = shuffle;
    lodash.slice = slice;
    lodash.sortBy = sortBy;
    lodash.sortedUniq = sortedUniq;
    lodash.sortedUniqBy = sortedUniqBy;
    lodash.split = split;
    lodash.spread = spread;
    lodash.tail = tail;
    lodash.take = take;
    lodash.takeRight = takeRight;
    lodash.takeRightWhile = takeRightWhile;
    lodash.takeWhile = takeWhile;
    lodash.tap = tap;
    lodash.throttle = throttle;
    lodash.thru = thru;
    lodash.toArray = toArray;
    lodash.toPairs = toPairs;
    lodash.toPairsIn = toPairsIn;
    lodash.toPath = toPath;
    lodash.toPlainObject = toPlainObject;
    lodash.transform = transform;
    lodash.unary = unary;
    lodash.union = union;
    lodash.unionBy = unionBy;
    lodash.unionWith = unionWith;
    lodash.uniq = uniq;
    lodash.uniqBy = uniqBy;
    lodash.uniqWith = uniqWith;
    lodash.unset = unset;
    lodash.unzip = unzip;
    lodash.unzipWith = unzipWith;
    lodash.update = update;
    lodash.updateWith = updateWith;
    lodash.values = values;
    lodash.valuesIn = valuesIn;
    lodash.without = without;
    lodash.words = words;
    lodash.wrap = wrap;
    lodash.xor = xor;
    lodash.xorBy = xorBy;
    lodash.xorWith = xorWith;
    lodash.zip = zip;
    lodash.zipObject = zipObject;
    lodash.zipObjectDeep = zipObjectDeep;
    lodash.zipWith = zipWith;

    // Add aliases.
    lodash.entries = toPairs;
    lodash.entriesIn = toPairsIn;
    lodash.extend = assignIn;
    lodash.extendWith = assignInWith;

    // Add methods to `lodash.prototype`.
    mixin(lodash, lodash);

    /*------------------------------------------------------------------------*/

    // Add methods that return unwrapped values in chain sequences.
    lodash.add = add;
    lodash.attempt = attempt;
    lodash.camelCase = camelCase;
    lodash.capitalize = capitalize;
    lodash.ceil = ceil;
    lodash.clamp = clamp;
    lodash.clone = clone;
    lodash.cloneDeep = cloneDeep;
    lodash.cloneDeepWith = cloneDeepWith;
    lodash.cloneWith = cloneWith;
    lodash.conformsTo = conformsTo;
    lodash.deburr = deburr;
    lodash.defaultTo = defaultTo;
    lodash.divide = divide;
    lodash.endsWith = endsWith;
    lodash.eq = eq;
    lodash.escape = escape;
    lodash.escapeRegExp = escapeRegExp;
    lodash.every = every;
    lodash.find = find;
    lodash.findIndex = findIndex;
    lodash.findKey = findKey;
    lodash.findLast = findLast;
    lodash.findLastIndex = findLastIndex;
    lodash.findLastKey = findLastKey;
    lodash.floor = floor;
    lodash.forEach = forEach;
    lodash.forEachRight = forEachRight;
    lodash.forIn = forIn;
    lodash.forInRight = forInRight;
    lodash.forOwn = forOwn;
    lodash.forOwnRight = forOwnRight;
    lodash.get = get;
    lodash.gt = gt;
    lodash.gte = gte;
    lodash.has = has;
    lodash.hasIn = hasIn;
    lodash.head = head;
    lodash.identity = identity;
    lodash.includes = includes;
    lodash.indexOf = indexOf;
    lodash.inRange = inRange;
    lodash.invoke = invoke;
    lodash.isArguments = isArguments;
    lodash.isArray = isArray;
    lodash.isArrayBuffer = isArrayBuffer;
    lodash.isArrayLike = isArrayLike;
    lodash.isArrayLikeObject = isArrayLikeObject;
    lodash.isBoolean = isBoolean;
    lodash.isBuffer = isBuffer;
    lodash.isDate = isDate;
    lodash.isElement = isElement;
    lodash.isEmpty = isEmpty;
    lodash.isEqual = isEqual;
    lodash.isEqualWith = isEqualWith;
    lodash.isError = isError;
    lodash.isFinite = isFinite;
    lodash.isFunction = isFunction;
    lodash.isInteger = isInteger;
    lodash.isLength = isLength;
    lodash.isMap = isMap;
    lodash.isMatch = isMatch;
    lodash.isMatchWith = isMatchWith;
    lodash.isNaN = isNaN;
    lodash.isNative = isNative;
    lodash.isNil = isNil;
    lodash.isNull = isNull;
    lodash.isNumber = isNumber;
    lodash.isObject = isObject;
    lodash.isObjectLike = isObjectLike;
    lodash.isPlainObject = isPlainObject;
    lodash.isRegExp = isRegExp;
    lodash.isSafeInteger = isSafeInteger;
    lodash.isSet = isSet;
    lodash.isString = isString;
    lodash.isSymbol = isSymbol;
    lodash.isTypedArray = isTypedArray;
    lodash.isUndefined = isUndefined;
    lodash.isWeakMap = isWeakMap;
    lodash.isWeakSet = isWeakSet;
    lodash.join = join;
    lodash.kebabCase = kebabCase;
    lodash.last = last;
    lodash.lastIndexOf = lastIndexOf;
    lodash.lowerCase = lowerCase;
    lodash.lowerFirst = lowerFirst;
    lodash.lt = lt;
    lodash.lte = lte;
    lodash.max = max;
    lodash.maxBy = maxBy;
    lodash.mean = mean;
    lodash.meanBy = meanBy;
    lodash.min = min;
    lodash.minBy = minBy;
    lodash.stubArray = stubArray;
    lodash.stubFalse = stubFalse;
    lodash.stubObject = stubObject;
    lodash.stubString = stubString;
    lodash.stubTrue = stubTrue;
    lodash.multiply = multiply;
    lodash.nth = nth;
    lodash.noConflict = noConflict;
    lodash.noop = noop;
    lodash.now = now;
    lodash.pad = pad;
    lodash.padEnd = padEnd;
    lodash.padStart = padStart;
    lodash.parseInt = parseInt;
    lodash.random = random;
    lodash.reduce = reduce;
    lodash.reduceRight = reduceRight;
    lodash.repeat = repeat;
    lodash.replace = replace;
    lodash.result = result;
    lodash.round = round;
    lodash.runInContext = runInContext;
    lodash.sample = sample;
    lodash.size = size;
    lodash.snakeCase = snakeCase;
    lodash.some = some;
    lodash.sortedIndex = sortedIndex;
    lodash.sortedIndexBy = sortedIndexBy;
    lodash.sortedIndexOf = sortedIndexOf;
    lodash.sortedLastIndex = sortedLastIndex;
    lodash.sortedLastIndexBy = sortedLastIndexBy;
    lodash.sortedLastIndexOf = sortedLastIndexOf;
    lodash.startCase = startCase;
    lodash.startsWith = startsWith;
    lodash.subtract = subtract;
    lodash.sum = sum;
    lodash.sumBy = sumBy;
    lodash.template = template;
    lodash.times = times;
    lodash.toFinite = toFinite;
    lodash.toInteger = toInteger;
    lodash.toLength = toLength;
    lodash.toLower = toLower;
    lodash.toNumber = toNumber;
    lodash.toSafeInteger = toSafeInteger;
    lodash.toString = toString;
    lodash.toUpper = toUpper;
    lodash.trim = trim;
    lodash.trimEnd = trimEnd;
    lodash.trimStart = trimStart;
    lodash.truncate = truncate;
    lodash.unescape = unescape;
    lodash.uniqueId = uniqueId;
    lodash.upperCase = upperCase;
    lodash.upperFirst = upperFirst;

    // Add aliases.
    lodash.each = forEach;
    lodash.eachRight = forEachRight;
    lodash.first = head;

    mixin(lodash, (function() {
      var source = {};
      baseForOwn(lodash, function(func, methodName) {
        if (!hasOwnProperty.call(lodash.prototype, methodName)) {
          source[methodName] = func;
        }
      });
      return source;
    }()), { 'chain': false });

    /*------------------------------------------------------------------------*/

    /**
     * The semantic version number.
     *
     * @static
     * @memberOf _
     * @type {string}
     */
    lodash.VERSION = VERSION;

    // Assign default placeholders.
    arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) {
      lodash[methodName].placeholder = lodash;
    });

    // Add `LazyWrapper` methods for `_.drop` and `_.take` variants.
    arrayEach(['drop', 'take'], function(methodName, index) {
      LazyWrapper.prototype[methodName] = function(n) {
        n = n === undefined ? 1 : nativeMax(toInteger(n), 0);

        var result = (this.__filtered__ && !index)
          ? new LazyWrapper(this)
          : this.clone();

        if (result.__filtered__) {
          result.__takeCount__ = nativeMin(n, result.__takeCount__);
        } else {
          result.__views__.push({
            'size': nativeMin(n, MAX_ARRAY_LENGTH),
            'type': methodName + (result.__dir__ < 0 ? 'Right' : '')
          });
        }
        return result;
      };

      LazyWrapper.prototype[methodName + 'Right'] = function(n) {
        return this.reverse()[methodName](n).reverse();
      };
    });

    // Add `LazyWrapper` methods that accept an `iteratee` value.
    arrayEach(['filter', 'map', 'takeWhile'], function(methodName, index) {
      var type = index + 1,
          isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG;

      LazyWrapper.prototype[methodName] = function(iteratee) {
        var result = this.clone();
        result.__iteratees__.push({
          'iteratee': getIteratee(iteratee, 3),
          'type': type
        });
        result.__filtered__ = result.__filtered__ || isFilter;
        return result;
      };
    });

    // Add `LazyWrapper` methods for `_.head` and `_.last`.
    arrayEach(['head', 'last'], function(methodName, index) {
      var takeName = 'take' + (index ? 'Right' : '');

      LazyWrapper.prototype[methodName] = function() {
        return this[takeName](1).value()[0];
      };
    });

    // Add `LazyWrapper` methods for `_.initial` and `_.tail`.
    arrayEach(['initial', 'tail'], function(methodName, index) {
      var dropName = 'drop' + (index ? '' : 'Right');

      LazyWrapper.prototype[methodName] = function() {
        return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1);
      };
    });

    LazyWrapper.prototype.compact = function() {
      return this.filter(identity);
    };

    LazyWrapper.prototype.find = function(predicate) {
      return this.filter(predicate).head();
    };

    LazyWrapper.prototype.findLast = function(predicate) {
      return this.reverse().find(predicate);
    };

    LazyWrapper.prototype.invokeMap = baseRest(function(path, args) {
      if (typeof path == 'function') {
        return new LazyWrapper(this);
      }
      return this.map(function(value) {
        return baseInvoke(value, path, args);
      });
    });

    LazyWrapper.prototype.reject = function(predicate) {
      return this.filter(negate(getIteratee(predicate)));
    };

    LazyWrapper.prototype.slice = function(start, end) {
      start = toInteger(start);

      var result = this;
      if (result.__filtered__ && (start > 0 || end < 0)) {
        return new LazyWrapper(result);
      }
      if (start < 0) {
        result = result.takeRight(-start);
      } else if (start) {
        result = result.drop(start);
      }
      if (end !== undefined) {
        end = toInteger(end);
        result = end < 0 ? result.dropRight(-end) : result.take(end - start);
      }
      return result;
    };

    LazyWrapper.prototype.takeRightWhile = function(predicate) {
      return this.reverse().takeWhile(predicate).reverse();
    };

    LazyWrapper.prototype.toArray = function() {
      return this.take(MAX_ARRAY_LENGTH);
    };

    // Add `LazyWrapper` methods to `lodash.prototype`.
    baseForOwn(LazyWrapper.prototype, function(func, methodName) {
      var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName),
          isTaker = /^(?:head|last)$/.test(methodName),
          lodashFunc = lodash[isTaker ? ('take' + (methodName == 'last' ? 'Right' : '')) : methodName],
          retUnwrapped = isTaker || /^find/.test(methodName);

      if (!lodashFunc) {
        return;
      }
      lodash.prototype[methodName] = function() {
        var value = this.__wrapped__,
            args = isTaker ? [1] : arguments,
            isLazy = value instanceof LazyWrapper,
            iteratee = args[0],
            useLazy = isLazy || isArray(value);

        var interceptor = function(value) {
          var result = lodashFunc.apply(lodash, arrayPush([value], args));
          return (isTaker && chainAll) ? result[0] : result;
        };

        if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) {
          // Avoid lazy use if the iteratee has a "length" value other than `1`.
          isLazy = useLazy = false;
        }
        var chainAll = this.__chain__,
            isHybrid = !!this.__actions__.length,
            isUnwrapped = retUnwrapped && !chainAll,
            onlyLazy = isLazy && !isHybrid;

        if (!retUnwrapped && useLazy) {
          value = onlyLazy ? value : new LazyWrapper(this);
          var result = func.apply(value, args);
          result.__actions__.push({ 'func': thru, 'args': [interceptor], 'thisArg': undefined });
          return new LodashWrapper(result, chainAll);
        }
        if (isUnwrapped && onlyLazy) {
          return func.apply(this, args);
        }
        result = this.thru(interceptor);
        return isUnwrapped ? (isTaker ? result.value()[0] : result.value()) : result;
      };
    });

    // Add `Array` methods to `lodash.prototype`.
    arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function(methodName) {
      var func = arrayProto[methodName],
          chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru',
          retUnwrapped = /^(?:pop|shift)$/.test(methodName);

      lodash.prototype[methodName] = function() {
        var args = arguments;
        if (retUnwrapped && !this.__chain__) {
          var value = this.value();
          return func.apply(isArray(value) ? value : [], args);
        }
        return this[chainName](function(value) {
          return func.apply(isArray(value) ? value : [], args);
        });
      };
    });

    // Map minified method names to their real names.
    baseForOwn(LazyWrapper.prototype, function(func, methodName) {
      var lodashFunc = lodash[methodName];
      if (lodashFunc) {
        var key = lodashFunc.name + '';
        if (!hasOwnProperty.call(realNames, key)) {
          realNames[key] = [];
        }
        realNames[key].push({ 'name': methodName, 'func': lodashFunc });
      }
    });

    realNames[createHybrid(undefined, WRAP_BIND_KEY_FLAG).name] = [{
      'name': 'wrapper',
      'func': undefined
    }];

    // Add methods to `LazyWrapper`.
    LazyWrapper.prototype.clone = lazyClone;
    LazyWrapper.prototype.reverse = lazyReverse;
    LazyWrapper.prototype.value = lazyValue;

    // Add chain sequence methods to the `lodash` wrapper.
    lodash.prototype.at = wrapperAt;
    lodash.prototype.chain = wrapperChain;
    lodash.prototype.commit = wrapperCommit;
    lodash.prototype.next = wrapperNext;
    lodash.prototype.plant = wrapperPlant;
    lodash.prototype.reverse = wrapperReverse;
    lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue;

    // Add lazy aliases.
    lodash.prototype.first = lodash.prototype.head;

    if (symIterator) {
      lodash.prototype[symIterator] = wrapperToIterator;
    }
    return lodash;
  });

  /*--------------------------------------------------------------------------*/

  // Export lodash.
  var _ = runInContext();

  // Some AMD build optimizers, like r.js, check for condition patterns like:
  if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
    // Expose Lodash on the global object to prevent errors when Lodash is
    // loaded by a script tag in the presence of an AMD loader.
    // See http://requirejs.org/docs/errors.html#mismatch for more details.
    // Use `_.noConflict` to remove Lodash from the global object.
    root._ = _;

    // Define as an anonymous module so, through path mapping, it can be
    // referenced as the "underscore" module.
    define(function() {
      return _;
    });
  }
  // Check for `exports` after `define` in case a build optimizer adds it.
  else if (freeModule) {
    // Export for Node.js.
    (freeModule.exports = _)._ = _;
    // Export for CommonJS support.
    freeExports._ = _;
  }
  else {
    // Export to the global object.
    root._ = _;
  }
}.call(this));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],285:[function(require,module,exports){
'use strict'
var inherits = require('inherits')
var HashBase = require('hash-base')
var Buffer = require('safe-buffer').Buffer

var ARRAY16 = new Array(16)

function MD5 () {
  HashBase.call(this, 64)

  // state
  this._a = 0x67452301
  this._b = 0xefcdab89
  this._c = 0x98badcfe
  this._d = 0x10325476
}

inherits(MD5, HashBase)

MD5.prototype._update = function () {
  var M = ARRAY16
  for (var i = 0; i < 16; ++i) M[i] = this._block.readInt32LE(i * 4)

  var a = this._a
  var b = this._b
  var c = this._c
  var d = this._d

  a = fnF(a, b, c, d, M[0], 0xd76aa478, 7)
  d = fnF(d, a, b, c, M[1], 0xe8c7b756, 12)
  c = fnF(c, d, a, b, M[2], 0x242070db, 17)
  b = fnF(b, c, d, a, M[3], 0xc1bdceee, 22)
  a = fnF(a, b, c, d, M[4], 0xf57c0faf, 7)
  d = fnF(d, a, b, c, M[5], 0x4787c62a, 12)
  c = fnF(c, d, a, b, M[6], 0xa8304613, 17)
  b = fnF(b, c, d, a, M[7], 0xfd469501, 22)
  a = fnF(a, b, c, d, M[8], 0x698098d8, 7)
  d = fnF(d, a, b, c, M[9], 0x8b44f7af, 12)
  c = fnF(c, d, a, b, M[10], 0xffff5bb1, 17)
  b = fnF(b, c, d, a, M[11], 0x895cd7be, 22)
  a = fnF(a, b, c, d, M[12], 0x6b901122, 7)
  d = fnF(d, a, b, c, M[13], 0xfd987193, 12)
  c = fnF(c, d, a, b, M[14], 0xa679438e, 17)
  b = fnF(b, c, d, a, M[15], 0x49b40821, 22)

  a = fnG(a, b, c, d, M[1], 0xf61e2562, 5)
  d = fnG(d, a, b, c, M[6], 0xc040b340, 9)
  c = fnG(c, d, a, b, M[11], 0x265e5a51, 14)
  b = fnG(b, c, d, a, M[0], 0xe9b6c7aa, 20)
  a = fnG(a, b, c, d, M[5], 0xd62f105d, 5)
  d = fnG(d, a, b, c, M[10], 0x02441453, 9)
  c = fnG(c, d, a, b, M[15], 0xd8a1e681, 14)
  b = fnG(b, c, d, a, M[4], 0xe7d3fbc8, 20)
  a = fnG(a, b, c, d, M[9], 0x21e1cde6, 5)
  d = fnG(d, a, b, c, M[14], 0xc33707d6, 9)
  c = fnG(c, d, a, b, M[3], 0xf4d50d87, 14)
  b = fnG(b, c, d, a, M[8], 0x455a14ed, 20)
  a = fnG(a, b, c, d, M[13], 0xa9e3e905, 5)
  d = fnG(d, a, b, c, M[2], 0xfcefa3f8, 9)
  c = fnG(c, d, a, b, M[7], 0x676f02d9, 14)
  b = fnG(b, c, d, a, M[12], 0x8d2a4c8a, 20)

  a = fnH(a, b, c, d, M[5], 0xfffa3942, 4)
  d = fnH(d, a, b, c, M[8], 0x8771f681, 11)
  c = fnH(c, d, a, b, M[11], 0x6d9d6122, 16)
  b = fnH(b, c, d, a, M[14], 0xfde5380c, 23)
  a = fnH(a, b, c, d, M[1], 0xa4beea44, 4)
  d = fnH(d, a, b, c, M[4], 0x4bdecfa9, 11)
  c = fnH(c, d, a, b, M[7], 0xf6bb4b60, 16)
  b = fnH(b, c, d, a, M[10], 0xbebfbc70, 23)
  a = fnH(a, b, c, d, M[13], 0x289b7ec6, 4)
  d = fnH(d, a, b, c, M[0], 0xeaa127fa, 11)
  c = fnH(c, d, a, b, M[3], 0xd4ef3085, 16)
  b = fnH(b, c, d, a, M[6], 0x04881d05, 23)
  a = fnH(a, b, c, d, M[9], 0xd9d4d039, 4)
  d = fnH(d, a, b, c, M[12], 0xe6db99e5, 11)
  c = fnH(c, d, a, b, M[15], 0x1fa27cf8, 16)
  b = fnH(b, c, d, a, M[2], 0xc4ac5665, 23)

  a = fnI(a, b, c, d, M[0], 0xf4292244, 6)
  d = fnI(d, a, b, c, M[7], 0x432aff97, 10)
  c = fnI(c, d, a, b, M[14], 0xab9423a7, 15)
  b = fnI(b, c, d, a, M[5], 0xfc93a039, 21)
  a = fnI(a, b, c, d, M[12], 0x655b59c3, 6)
  d = fnI(d, a, b, c, M[3], 0x8f0ccc92, 10)
  c = fnI(c, d, a, b, M[10], 0xffeff47d, 15)
  b = fnI(b, c, d, a, M[1], 0x85845dd1, 21)
  a = fnI(a, b, c, d, M[8], 0x6fa87e4f, 6)
  d = fnI(d, a, b, c, M[15], 0xfe2ce6e0, 10)
  c = fnI(c, d, a, b, M[6], 0xa3014314, 15)
  b = fnI(b, c, d, a, M[13], 0x4e0811a1, 21)
  a = fnI(a, b, c, d, M[4], 0xf7537e82, 6)
  d = fnI(d, a, b, c, M[11], 0xbd3af235, 10)
  c = fnI(c, d, a, b, M[2], 0x2ad7d2bb, 15)
  b = fnI(b, c, d, a, M[9], 0xeb86d391, 21)

  this._a = (this._a + a) | 0
  this._b = (this._b + b) | 0
  this._c = (this._c + c) | 0
  this._d = (this._d + d) | 0
}

MD5.prototype._digest = function () {
  // create padding and handle blocks
  this._block[this._blockOffset++] = 0x80
  if (this._blockOffset > 56) {
    this._block.fill(0, this._blockOffset, 64)
    this._update()
    this._blockOffset = 0
  }

  this._block.fill(0, this._blockOffset, 56)
  this._block.writeUInt32LE(this._length[0], 56)
  this._block.writeUInt32LE(this._length[1], 60)
  this._update()

  // produce result
  var buffer = Buffer.allocUnsafe(16)
  buffer.writeInt32LE(this._a, 0)
  buffer.writeInt32LE(this._b, 4)
  buffer.writeInt32LE(this._c, 8)
  buffer.writeInt32LE(this._d, 12)
  return buffer
}

function rotl (x, n) {
  return (x << n) | (x >>> (32 - n))
}

function fnF (a, b, c, d, m, k, s) {
  return (rotl((a + ((b & c) | ((~b) & d)) + m + k) | 0, s) + b) | 0
}

function fnG (a, b, c, d, m, k, s) {
  return (rotl((a + ((b & d) | (c & (~d))) + m + k) | 0, s) + b) | 0
}

function fnH (a, b, c, d, m, k, s) {
  return (rotl((a + (b ^ c ^ d) + m + k) | 0, s) + b) | 0
}

function fnI (a, b, c, d, m, k, s) {
  return (rotl((a + ((c ^ (b | (~d)))) + m + k) | 0, s) + b) | 0
}

module.exports = MD5

},{"hash-base":229,"inherits":245,"safe-buffer":326}],286:[function(require,module,exports){
var bn = require('bn.js');
var brorand = require('brorand');

function MillerRabin(rand) {
  this.rand = rand || new brorand.Rand();
}
module.exports = MillerRabin;

MillerRabin.create = function create(rand) {
  return new MillerRabin(rand);
};

MillerRabin.prototype._randbelow = function _randbelow(n) {
  var len = n.bitLength();
  var min_bytes = Math.ceil(len / 8);

  // Generage random bytes until a number less than n is found.
  // This ensures that 0..n-1 have an equal probability of being selected.
  do
    var a = new bn(this.rand.generate(min_bytes));
  while (a.cmp(n) >= 0);

  return a;
};

MillerRabin.prototype._randrange = function _randrange(start, stop) {
  // Generate a random number greater than or equal to start and less than stop.
  var size = stop.sub(start);
  return start.add(this._randbelow(size));
};

MillerRabin.prototype.test = function test(n, k, cb) {
  var len = n.bitLength();
  var red = bn.mont(n);
  var rone = new bn(1).toRed(red);

  if (!k)
    k = Math.max(1, (len / 48) | 0);

  // Find d and s, (n - 1) = (2 ^ s) * d;
  var n1 = n.subn(1);
  for (var s = 0; !n1.testn(s); s++) {}
  var d = n.shrn(s);

  var rn1 = n1.toRed(red);

  var prime = true;
  for (; k > 0; k--) {
    var a = this._randrange(new bn(2), n1);
    if (cb)
      cb(a);

    var x = a.toRed(red).redPow(d);
    if (x.cmp(rone) === 0 || x.cmp(rn1) === 0)
      continue;

    for (var i = 1; i < s; i++) {
      x = x.redSqr();

      if (x.cmp(rone) === 0)
        return false;
      if (x.cmp(rn1) === 0)
        break;
    }

    if (i === s)
      return false;
  }

  return prime;
};

MillerRabin.prototype.getDivisor = function getDivisor(n, k) {
  var len = n.bitLength();
  var red = bn.mont(n);
  var rone = new bn(1).toRed(red);

  if (!k)
    k = Math.max(1, (len / 48) | 0);

  // Find d and s, (n - 1) = (2 ^ s) * d;
  var n1 = n.subn(1);
  for (var s = 0; !n1.testn(s); s++) {}
  var d = n.shrn(s);

  var rn1 = n1.toRed(red);

  for (; k > 0; k--) {
    var a = this._randrange(new bn(2), n1);

    var g = n.gcd(a);
    if (g.cmpn(1) !== 0)
      return g;

    var x = a.toRed(red).redPow(d);
    if (x.cmp(rone) === 0 || x.cmp(rn1) === 0)
      continue;

    for (var i = 1; i < s; i++) {
      x = x.redSqr();

      if (x.cmp(rone) === 0)
        return x.fromRed().subn(1).gcd(n);
      if (x.cmp(rn1) === 0)
        break;
    }

    if (i === s) {
      x = x.redSqr();
      return x.fromRed().subn(1).gcd(n);
    }
  }

  return false;
};

},{"bn.js":136,"brorand":137}],287:[function(require,module,exports){
module.exports = assert;

function assert(val, msg) {
  if (!val)
    throw new Error(msg || 'Assertion failed');
}

assert.equal = function assertEqual(l, r, msg) {
  if (l != r)
    throw new Error(msg || ('Assertion failed: ' + l + ' != ' + r));
};

},{}],288:[function(require,module,exports){
'use strict';

var utils = exports;

function toArray(msg, enc) {
  if (Array.isArray(msg))
    return msg.slice();
  if (!msg)
    return [];
  var res = [];
  if (typeof msg !== 'string') {
    for (var i = 0; i < msg.length; i++)
      res[i] = msg[i] | 0;
    return res;
  }
  if (enc === 'hex') {
    msg = msg.replace(/[^a-z0-9]+/ig, '');
    if (msg.length % 2 !== 0)
      msg = '0' + msg;
    for (var i = 0; i < msg.length; i += 2)
      res.push(parseInt(msg[i] + msg[i + 1], 16));
  } else {
    for (var i = 0; i < msg.length; i++) {
      var c = msg.charCodeAt(i);
      var hi = c >> 8;
      var lo = c & 0xff;
      if (hi)
        res.push(hi, lo);
      else
        res.push(lo);
    }
  }
  return res;
}
utils.toArray = toArray;

function zero2(word) {
  if (word.length === 1)
    return '0' + word;
  else
    return word;
}
utils.zero2 = zero2;

function toHex(msg) {
  var res = '';
  for (var i = 0; i < msg.length; i++)
    res += zero2(msg[i].toString(16));
  return res;
}
utils.toHex = toHex;

utils.encode = function encode(arr, enc) {
  if (enc === 'hex')
    return toHex(arr);
  else
    return arr;
};

},{}],289:[function(require,module,exports){
// Top level file is just a mixin of submodules & constants
'use strict';

var assign    = require('./lib/utils/common').assign;

var deflate   = require('./lib/deflate');
var inflate   = require('./lib/inflate');
var constants = require('./lib/zlib/constants');

var pako = {};

assign(pako, deflate, inflate, constants);

module.exports = pako;

},{"./lib/deflate":290,"./lib/inflate":291,"./lib/utils/common":292,"./lib/zlib/constants":295}],290:[function(require,module,exports){
'use strict';


var zlib_deflate = require('./zlib/deflate');
var utils        = require('./utils/common');
var strings      = require('./utils/strings');
var msg          = require('./zlib/messages');
var ZStream      = require('./zlib/zstream');

var toString = Object.prototype.toString;

/* Public constants ==========================================================*/
/* ===========================================================================*/

var Z_NO_FLUSH      = 0;
var Z_FINISH        = 4;

var Z_OK            = 0;
var Z_STREAM_END    = 1;
var Z_SYNC_FLUSH    = 2;

var Z_DEFAULT_COMPRESSION = -1;

var Z_DEFAULT_STRATEGY    = 0;

var Z_DEFLATED  = 8;

/* ===========================================================================*/


/**
 * class Deflate
 *
 * Generic JS-style wrapper for zlib calls. If you don't need
 * streaming behaviour - use more simple functions: [[deflate]],
 * [[deflateRaw]] and [[gzip]].
 **/

/* internal
 * Deflate.chunks -> Array
 *
 * Chunks of output data, if [[Deflate#onData]] not overridden.
 **/

/**
 * Deflate.result -> Uint8Array|Array
 *
 * Compressed result, generated by default [[Deflate#onData]]
 * and [[Deflate#onEnd]] handlers. Filled after you push last chunk
 * (call [[Deflate#push]] with `Z_FINISH` / `true` param)  or if you
 * push a chunk with explicit flush (call [[Deflate#push]] with
 * `Z_SYNC_FLUSH` param).
 **/

/**
 * Deflate.err -> Number
 *
 * Error code after deflate finished. 0 (Z_OK) on success.
 * You will not need it in real life, because deflate errors
 * are possible only on wrong options or bad `onData` / `onEnd`
 * custom handlers.
 **/

/**
 * Deflate.msg -> String
 *
 * Error message, if [[Deflate.err]] != 0
 **/


/**
 * new Deflate(options)
 * - options (Object): zlib deflate options.
 *
 * Creates new deflator instance with specified params. Throws exception
 * on bad params. Supported options:
 *
 * - `level`
 * - `windowBits`
 * - `memLevel`
 * - `strategy`
 * - `dictionary`
 *
 * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
 * for more information on these.
 *
 * Additional options, for internal needs:
 *
 * - `chunkSize` - size of generated data chunks (16K by default)
 * - `raw` (Boolean) - do raw deflate
 * - `gzip` (Boolean) - create gzip wrapper
 * - `to` (String) - if equal to 'string', then result will be "binary string"
 *    (each char code [0..255])
 * - `header` (Object) - custom header for gzip
 *   - `text` (Boolean) - true if compressed data believed to be text
 *   - `time` (Number) - modification time, unix timestamp
 *   - `os` (Number) - operation system code
 *   - `extra` (Array) - array of bytes with extra data (max 65536)
 *   - `name` (String) - file name (binary string)
 *   - `comment` (String) - comment (binary string)
 *   - `hcrc` (Boolean) - true if header crc should be added
 *
 * ##### Example:
 *
 * ```javascript
 * var pako = require('pako')
 *   , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9])
 *   , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]);
 *
 * var deflate = new pako.Deflate({ level: 3});
 *
 * deflate.push(chunk1, false);
 * deflate.push(chunk2, true);  // true -> last chunk
 *
 * if (deflate.err) { throw new Error(deflate.err); }
 *
 * console.log(deflate.result);
 * ```
 **/
function Deflate(options) {
  if (!(this instanceof Deflate)) return new Deflate(options);

  this.options = utils.assign({
    level: Z_DEFAULT_COMPRESSION,
    method: Z_DEFLATED,
    chunkSize: 16384,
    windowBits: 15,
    memLevel: 8,
    strategy: Z_DEFAULT_STRATEGY,
    to: ''
  }, options || {});

  var opt = this.options;

  if (opt.raw && (opt.windowBits > 0)) {
    opt.windowBits = -opt.windowBits;
  }

  else if (opt.gzip && (opt.windowBits > 0) && (opt.windowBits < 16)) {
    opt.windowBits += 16;
  }

  this.err    = 0;      // error code, if happens (0 = Z_OK)
  this.msg    = '';     // error message
  this.ended  = false;  // used to avoid multiple onEnd() calls
  this.chunks = [];     // chunks of compressed data

  this.strm = new ZStream();
  this.strm.avail_out = 0;

  var status = zlib_deflate.deflateInit2(
    this.strm,
    opt.level,
    opt.method,
    opt.windowBits,
    opt.memLevel,
    opt.strategy
  );

  if (status !== Z_OK) {
    throw new Error(msg[status]);
  }

  if (opt.header) {
    zlib_deflate.deflateSetHeader(this.strm, opt.header);
  }

  if (opt.dictionary) {
    var dict;
    // Convert data if needed
    if (typeof opt.dictionary === 'string') {
      // If we need to compress text, change encoding to utf8.
      dict = strings.string2buf(opt.dictionary);
    } else if (toString.call(opt.dictionary) === '[object ArrayBuffer]') {
      dict = new Uint8Array(opt.dictionary);
    } else {
      dict = opt.dictionary;
    }

    status = zlib_deflate.deflateSetDictionary(this.strm, dict);

    if (status !== Z_OK) {
      throw new Error(msg[status]);
    }

    this._dict_set = true;
  }
}

/**
 * Deflate#push(data[, mode]) -> Boolean
 * - data (Uint8Array|Array|ArrayBuffer|String): input data. Strings will be
 *   converted to utf8 byte sequence.
 * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.
 *   See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH.
 *
 * Sends input data to deflate pipe, generating [[Deflate#onData]] calls with
 * new compressed chunks. Returns `true` on success. The last data block must have
 * mode Z_FINISH (or `true`). That will flush internal pending buffers and call
 * [[Deflate#onEnd]]. For interim explicit flushes (without ending the stream) you
 * can use mode Z_SYNC_FLUSH, keeping the compression context.
 *
 * On fail call [[Deflate#onEnd]] with error code and return false.
 *
 * We strongly recommend to use `Uint8Array` on input for best speed (output
 * array format is detected automatically). Also, don't skip last param and always
 * use the same type in your code (boolean or number). That will improve JS speed.
 *
 * For regular `Array`-s make sure all elements are [0..255].
 *
 * ##### Example
 *
 * ```javascript
 * push(chunk, false); // push one of data chunks
 * ...
 * push(chunk, true);  // push last chunk
 * ```
 **/
Deflate.prototype.push = function (data, mode) {
  var strm = this.strm;
  var chunkSize = this.options.chunkSize;
  var status, _mode;

  if (this.ended) { return false; }

  _mode = (mode === ~~mode) ? mode : ((mode === true) ? Z_FINISH : Z_NO_FLUSH);

  // Convert data if needed
  if (typeof data === 'string') {
    // If we need to compress text, change encoding to utf8.
    strm.input = strings.string2buf(data);
  } else if (toString.call(data) === '[object ArrayBuffer]') {
    strm.input = new Uint8Array(data);
  } else {
    strm.input = data;
  }

  strm.next_in = 0;
  strm.avail_in = strm.input.length;

  do {
    if (strm.avail_out === 0) {
      strm.output = new utils.Buf8(chunkSize);
      strm.next_out = 0;
      strm.avail_out = chunkSize;
    }
    status = zlib_deflate.deflate(strm, _mode);    /* no bad return value */

    if (status !== Z_STREAM_END && status !== Z_OK) {
      this.onEnd(status);
      this.ended = true;
      return false;
    }
    if (strm.avail_out === 0 || (strm.avail_in === 0 && (_mode === Z_FINISH || _mode === Z_SYNC_FLUSH))) {
      if (this.options.to === 'string') {
        this.onData(strings.buf2binstring(utils.shrinkBuf(strm.output, strm.next_out)));
      } else {
        this.onData(utils.shrinkBuf(strm.output, strm.next_out));
      }
    }
  } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== Z_STREAM_END);

  // Finalize on the last chunk.
  if (_mode === Z_FINISH) {
    status = zlib_deflate.deflateEnd(this.strm);
    this.onEnd(status);
    this.ended = true;
    return status === Z_OK;
  }

  // callback interim results if Z_SYNC_FLUSH.
  if (_mode === Z_SYNC_FLUSH) {
    this.onEnd(Z_OK);
    strm.avail_out = 0;
    return true;
  }

  return true;
};


/**
 * Deflate#onData(chunk) -> Void
 * - chunk (Uint8Array|Array|String): output data. Type of array depends
 *   on js engine support. When string output requested, each chunk
 *   will be string.
 *
 * By default, stores data blocks in `chunks[]` property and glue
 * those in `onEnd`. Override this handler, if you need another behaviour.
 **/
Deflate.prototype.onData = function (chunk) {
  this.chunks.push(chunk);
};


/**
 * Deflate#onEnd(status) -> Void
 * - status (Number): deflate status. 0 (Z_OK) on success,
 *   other if not.
 *
 * Called once after you tell deflate that the input stream is
 * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH)
 * or if an error happened. By default - join collected chunks,
 * free memory and fill `results` / `err` properties.
 **/
Deflate.prototype.onEnd = function (status) {
  // On success - join
  if (status === Z_OK) {
    if (this.options.to === 'string') {
      this.result = this.chunks.join('');
    } else {
      this.result = utils.flattenChunks(this.chunks);
    }
  }
  this.chunks = [];
  this.err = status;
  this.msg = this.strm.msg;
};


/**
 * deflate(data[, options]) -> Uint8Array|Array|String
 * - data (Uint8Array|Array|String): input data to compress.
 * - options (Object): zlib deflate options.
 *
 * Compress `data` with deflate algorithm and `options`.
 *
 * Supported options are:
 *
 * - level
 * - windowBits
 * - memLevel
 * - strategy
 * - dictionary
 *
 * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
 * for more information on these.
 *
 * Sugar (options):
 *
 * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify
 *   negative windowBits implicitly.
 * - `to` (String) - if equal to 'string', then result will be "binary string"
 *    (each char code [0..255])
 *
 * ##### Example:
 *
 * ```javascript
 * var pako = require('pako')
 *   , data = Uint8Array([1,2,3,4,5,6,7,8,9]);
 *
 * console.log(pako.deflate(data));
 * ```
 **/
function deflate(input, options) {
  var deflator = new Deflate(options);

  deflator.push(input, true);

  // That will never happens, if you don't cheat with options :)
  if (deflator.err) { throw deflator.msg || msg[deflator.err]; }

  return deflator.result;
}


/**
 * deflateRaw(data[, options]) -> Uint8Array|Array|String
 * - data (Uint8Array|Array|String): input data to compress.
 * - options (Object): zlib deflate options.
 *
 * The same as [[deflate]], but creates raw data, without wrapper
 * (header and adler32 crc).
 **/
function deflateRaw(input, options) {
  options = options || {};
  options.raw = true;
  return deflate(input, options);
}


/**
 * gzip(data[, options]) -> Uint8Array|Array|String
 * - data (Uint8Array|Array|String): input data to compress.
 * - options (Object): zlib deflate options.
 *
 * The same as [[deflate]], but create gzip wrapper instead of
 * deflate one.
 **/
function gzip(input, options) {
  options = options || {};
  options.gzip = true;
  return deflate(input, options);
}


exports.Deflate = Deflate;
exports.deflate = deflate;
exports.deflateRaw = deflateRaw;
exports.gzip = gzip;

},{"./utils/common":292,"./utils/strings":293,"./zlib/deflate":297,"./zlib/messages":302,"./zlib/zstream":304}],291:[function(require,module,exports){
'use strict';


var zlib_inflate = require('./zlib/inflate');
var utils        = require('./utils/common');
var strings      = require('./utils/strings');
var c            = require('./zlib/constants');
var msg          = require('./zlib/messages');
var ZStream      = require('./zlib/zstream');
var GZheader     = require('./zlib/gzheader');

var toString = Object.prototype.toString;

/**
 * class Inflate
 *
 * Generic JS-style wrapper for zlib calls. If you don't need
 * streaming behaviour - use more simple functions: [[inflate]]
 * and [[inflateRaw]].
 **/

/* internal
 * inflate.chunks -> Array
 *
 * Chunks of output data, if [[Inflate#onData]] not overridden.
 **/

/**
 * Inflate.result -> Uint8Array|Array|String
 *
 * Uncompressed result, generated by default [[Inflate#onData]]
 * and [[Inflate#onEnd]] handlers. Filled after you push last chunk
 * (call [[Inflate#push]] with `Z_FINISH` / `true` param) or if you
 * push a chunk with explicit flush (call [[Inflate#push]] with
 * `Z_SYNC_FLUSH` param).
 **/

/**
 * Inflate.err -> Number
 *
 * Error code after inflate finished. 0 (Z_OK) on success.
 * Should be checked if broken data possible.
 **/

/**
 * Inflate.msg -> String
 *
 * Error message, if [[Inflate.err]] != 0
 **/


/**
 * new Inflate(options)
 * - options (Object): zlib inflate options.
 *
 * Creates new inflator instance with specified params. Throws exception
 * on bad params. Supported options:
 *
 * - `windowBits`
 * - `dictionary`
 *
 * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
 * for more information on these.
 *
 * Additional options, for internal needs:
 *
 * - `chunkSize` - size of generated data chunks (16K by default)
 * - `raw` (Boolean) - do raw inflate
 * - `to` (String) - if equal to 'string', then result will be converted
 *   from utf8 to utf16 (javascript) string. When string output requested,
 *   chunk length can differ from `chunkSize`, depending on content.
 *
 * By default, when no options set, autodetect deflate/gzip data format via
 * wrapper header.
 *
 * ##### Example:
 *
 * ```javascript
 * var pako = require('pako')
 *   , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9])
 *   , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]);
 *
 * var inflate = new pako.Inflate({ level: 3});
 *
 * inflate.push(chunk1, false);
 * inflate.push(chunk2, true);  // true -> last chunk
 *
 * if (inflate.err) { throw new Error(inflate.err); }
 *
 * console.log(inflate.result);
 * ```
 **/
function Inflate(options) {
  if (!(this instanceof Inflate)) return new Inflate(options);

  this.options = utils.assign({
    chunkSize: 16384,
    windowBits: 0,
    to: ''
  }, options || {});

  var opt = this.options;

  // Force window size for `raw` data, if not set directly,
  // because we have no header for autodetect.
  if (opt.raw && (opt.windowBits >= 0) && (opt.windowBits < 16)) {
    opt.windowBits = -opt.windowBits;
    if (opt.windowBits === 0) { opt.windowBits = -15; }
  }

  // If `windowBits` not defined (and mode not raw) - set autodetect flag for gzip/deflate
  if ((opt.windowBits >= 0) && (opt.windowBits < 16) &&
      !(options && options.windowBits)) {
    opt.windowBits += 32;
  }

  // Gzip header has no info about windows size, we can do autodetect only
  // for deflate. So, if window size not set, force it to max when gzip possible
  if ((opt.windowBits > 15) && (opt.windowBits < 48)) {
    // bit 3 (16) -> gzipped data
    // bit 4 (32) -> autodetect gzip/deflate
    if ((opt.windowBits & 15) === 0) {
      opt.windowBits |= 15;
    }
  }

  this.err    = 0;      // error code, if happens (0 = Z_OK)
  this.msg    = '';     // error message
  this.ended  = false;  // used to avoid multiple onEnd() calls
  this.chunks = [];     // chunks of compressed data

  this.strm   = new ZStream();
  this.strm.avail_out = 0;

  var status  = zlib_inflate.inflateInit2(
    this.strm,
    opt.windowBits
  );

  if (status !== c.Z_OK) {
    throw new Error(msg[status]);
  }

  this.header = new GZheader();

  zlib_inflate.inflateGetHeader(this.strm, this.header);

  // Setup dictionary
  if (opt.dictionary) {
    // Convert data if needed
    if (typeof opt.dictionary === 'string') {
      opt.dictionary = strings.string2buf(opt.dictionary);
    } else if (toString.call(opt.dictionary) === '[object ArrayBuffer]') {
      opt.dictionary = new Uint8Array(opt.dictionary);
    }
    if (opt.raw) { //In raw mode we need to set the dictionary early
      status = zlib_inflate.inflateSetDictionary(this.strm, opt.dictionary);
      if (status !== c.Z_OK) {
        throw new Error(msg[status]);
      }
    }
  }
}

/**
 * Inflate#push(data[, mode]) -> Boolean
 * - data (Uint8Array|Array|ArrayBuffer|String): input data
 * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.
 *   See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH.
 *
 * Sends input data to inflate pipe, generating [[Inflate#onData]] calls with
 * new output chunks. Returns `true` on success. The last data block must have
 * mode Z_FINISH (or `true`). That will flush internal pending buffers and call
 * [[Inflate#onEnd]]. For interim explicit flushes (without ending the stream) you
 * can use mode Z_SYNC_FLUSH, keeping the decompression context.
 *
 * On fail call [[Inflate#onEnd]] with error code and return false.
 *
 * We strongly recommend to use `Uint8Array` on input for best speed (output
 * format is detected automatically). Also, don't skip last param and always
 * use the same type in your code (boolean or number). That will improve JS speed.
 *
 * For regular `Array`-s make sure all elements are [0..255].
 *
 * ##### Example
 *
 * ```javascript
 * push(chunk, false); // push one of data chunks
 * ...
 * push(chunk, true);  // push last chunk
 * ```
 **/
Inflate.prototype.push = function (data, mode) {
  var strm = this.strm;
  var chunkSize = this.options.chunkSize;
  var dictionary = this.options.dictionary;
  var status, _mode;
  var next_out_utf8, tail, utf8str;

  // Flag to properly process Z_BUF_ERROR on testing inflate call
  // when we check that all output data was flushed.
  var allowBufError = false;

  if (this.ended) { return false; }
  _mode = (mode === ~~mode) ? mode : ((mode === true) ? c.Z_FINISH : c.Z_NO_FLUSH);

  // Convert data if needed
  if (typeof data === 'string') {
    // Only binary strings can be decompressed on practice
    strm.input = strings.binstring2buf(data);
  } else if (toString.call(data) === '[object ArrayBuffer]') {
    strm.input = new Uint8Array(data);
  } else {
    strm.input = data;
  }

  strm.next_in = 0;
  strm.avail_in = strm.input.length;

  do {
    if (strm.avail_out === 0) {
      strm.output = new utils.Buf8(chunkSize);
      strm.next_out = 0;
      strm.avail_out = chunkSize;
    }

    status = zlib_inflate.inflate(strm, c.Z_NO_FLUSH);    /* no bad return value */

    if (status === c.Z_NEED_DICT && dictionary) {
      status = zlib_inflate.inflateSetDictionary(this.strm, dictionary);
    }

    if (status === c.Z_BUF_ERROR && allowBufError === true) {
      status = c.Z_OK;
      allowBufError = false;
    }

    if (status !== c.Z_STREAM_END && status !== c.Z_OK) {
      this.onEnd(status);
      this.ended = true;
      return false;
    }

    if (strm.next_out) {
      if (strm.avail_out === 0 || status === c.Z_STREAM_END || (strm.avail_in === 0 && (_mode === c.Z_FINISH || _mode === c.Z_SYNC_FLUSH))) {

        if (this.options.to === 'string') {

          next_out_utf8 = strings.utf8border(strm.output, strm.next_out);

          tail = strm.next_out - next_out_utf8;
          utf8str = strings.buf2string(strm.output, next_out_utf8);

          // move tail
          strm.next_out = tail;
          strm.avail_out = chunkSize - tail;
          if (tail) { utils.arraySet(strm.output, strm.output, next_out_utf8, tail, 0); }

          this.onData(utf8str);

        } else {
          this.onData(utils.shrinkBuf(strm.output, strm.next_out));
        }
      }
    }

    // When no more input data, we should check that internal inflate buffers
    // are flushed. The only way to do it when avail_out = 0 - run one more
    // inflate pass. But if output data not exists, inflate return Z_BUF_ERROR.
    // Here we set flag to process this error properly.
    //
    // NOTE. Deflate does not return error in this case and does not needs such
    // logic.
    if (strm.avail_in === 0 && strm.avail_out === 0) {
      allowBufError = true;
    }

  } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== c.Z_STREAM_END);

  if (status === c.Z_STREAM_END) {
    _mode = c.Z_FINISH;
  }

  // Finalize on the last chunk.
  if (_mode === c.Z_FINISH) {
    status = zlib_inflate.inflateEnd(this.strm);
    this.onEnd(status);
    this.ended = true;
    return status === c.Z_OK;
  }

  // callback interim results if Z_SYNC_FLUSH.
  if (_mode === c.Z_SYNC_FLUSH) {
    this.onEnd(c.Z_OK);
    strm.avail_out = 0;
    return true;
  }

  return true;
};


/**
 * Inflate#onData(chunk) -> Void
 * - chunk (Uint8Array|Array|String): output data. Type of array depends
 *   on js engine support. When string output requested, each chunk
 *   will be string.
 *
 * By default, stores data blocks in `chunks[]` property and glue
 * those in `onEnd`. Override this handler, if you need another behaviour.
 **/
Inflate.prototype.onData = function (chunk) {
  this.chunks.push(chunk);
};


/**
 * Inflate#onEnd(status) -> Void
 * - status (Number): inflate status. 0 (Z_OK) on success,
 *   other if not.
 *
 * Called either after you tell inflate that the input stream is
 * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH)
 * or if an error happened. By default - join collected chunks,
 * free memory and fill `results` / `err` properties.
 **/
Inflate.prototype.onEnd = function (status) {
  // On success - join
  if (status === c.Z_OK) {
    if (this.options.to === 'string') {
      // Glue & convert here, until we teach pako to send
      // utf8 aligned strings to onData
      this.result = this.chunks.join('');
    } else {
      this.result = utils.flattenChunks(this.chunks);
    }
  }
  this.chunks = [];
  this.err = status;
  this.msg = this.strm.msg;
};


/**
 * inflate(data[, options]) -> Uint8Array|Array|String
 * - data (Uint8Array|Array|String): input data to decompress.
 * - options (Object): zlib inflate options.
 *
 * Decompress `data` with inflate/ungzip and `options`. Autodetect
 * format via wrapper header by default. That's why we don't provide
 * separate `ungzip` method.
 *
 * Supported options are:
 *
 * - windowBits
 *
 * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
 * for more information.
 *
 * Sugar (options):
 *
 * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify
 *   negative windowBits implicitly.
 * - `to` (String) - if equal to 'string', then result will be converted
 *   from utf8 to utf16 (javascript) string. When string output requested,
 *   chunk length can differ from `chunkSize`, depending on content.
 *
 *
 * ##### Example:
 *
 * ```javascript
 * var pako = require('pako')
 *   , input = pako.deflate([1,2,3,4,5,6,7,8,9])
 *   , output;
 *
 * try {
 *   output = pako.inflate(input);
 * } catch (err)
 *   console.log(err);
 * }
 * ```
 **/
function inflate(input, options) {
  var inflator = new Inflate(options);

  inflator.push(input, true);

  // That will never happens, if you don't cheat with options :)
  if (inflator.err) { throw inflator.msg || msg[inflator.err]; }

  return inflator.result;
}


/**
 * inflateRaw(data[, options]) -> Uint8Array|Array|String
 * - data (Uint8Array|Array|String): input data to decompress.
 * - options (Object): zlib inflate options.
 *
 * The same as [[inflate]], but creates raw data, without wrapper
 * (header and adler32 crc).
 **/
function inflateRaw(input, options) {
  options = options || {};
  options.raw = true;
  return inflate(input, options);
}


/**
 * ungzip(data[, options]) -> Uint8Array|Array|String
 * - data (Uint8Array|Array|String): input data to decompress.
 * - options (Object): zlib inflate options.
 *
 * Just shortcut to [[inflate]], because it autodetects format
 * by header.content. Done for convenience.
 **/


exports.Inflate = Inflate;
exports.inflate = inflate;
exports.inflateRaw = inflateRaw;
exports.ungzip  = inflate;

},{"./utils/common":292,"./utils/strings":293,"./zlib/constants":295,"./zlib/gzheader":298,"./zlib/inflate":300,"./zlib/messages":302,"./zlib/zstream":304}],292:[function(require,module,exports){
'use strict';


var TYPED_OK =  (typeof Uint8Array !== 'undefined') &&
                (typeof Uint16Array !== 'undefined') &&
                (typeof Int32Array !== 'undefined');

function _has(obj, key) {
  return Object.prototype.hasOwnProperty.call(obj, key);
}

exports.assign = function (obj /*from1, from2, from3, ...*/) {
  var sources = Array.prototype.slice.call(arguments, 1);
  while (sources.length) {
    var source = sources.shift();
    if (!source) { continue; }

    if (typeof source !== 'object') {
      throw new TypeError(source + 'must be non-object');
    }

    for (var p in source) {
      if (_has(source, p)) {
        obj[p] = source[p];
      }
    }
  }

  return obj;
};


// reduce buffer size, avoiding mem copy
exports.shrinkBuf = function (buf, size) {
  if (buf.length === size) { return buf; }
  if (buf.subarray) { return buf.subarray(0, size); }
  buf.length = size;
  return buf;
};


var fnTyped = {
  arraySet: function (dest, src, src_offs, len, dest_offs) {
    if (src.subarray && dest.subarray) {
      dest.set(src.subarray(src_offs, src_offs + len), dest_offs);
      return;
    }
    // Fallback to ordinary array
    for (var i = 0; i < len; i++) {
      dest[dest_offs + i] = src[src_offs + i];
    }
  },
  // Join array of chunks to single array.
  flattenChunks: function (chunks) {
    var i, l, len, pos, chunk, result;

    // calculate data length
    len = 0;
    for (i = 0, l = chunks.length; i < l; i++) {
      len += chunks[i].length;
    }

    // join chunks
    result = new Uint8Array(len);
    pos = 0;
    for (i = 0, l = chunks.length; i < l; i++) {
      chunk = chunks[i];
      result.set(chunk, pos);
      pos += chunk.length;
    }

    return result;
  }
};

var fnUntyped = {
  arraySet: function (dest, src, src_offs, len, dest_offs) {
    for (var i = 0; i < len; i++) {
      dest[dest_offs + i] = src[src_offs + i];
    }
  },
  // Join array of chunks to single array.
  flattenChunks: function (chunks) {
    return [].concat.apply([], chunks);
  }
};


// Enable/Disable typed arrays use, for testing
//
exports.setTyped = function (on) {
  if (on) {
    exports.Buf8  = Uint8Array;
    exports.Buf16 = Uint16Array;
    exports.Buf32 = Int32Array;
    exports.assign(exports, fnTyped);
  } else {
    exports.Buf8  = Array;
    exports.Buf16 = Array;
    exports.Buf32 = Array;
    exports.assign(exports, fnUntyped);
  }
};

exports.setTyped(TYPED_OK);

},{}],293:[function(require,module,exports){
// String encode/decode helpers
'use strict';


var utils = require('./common');


// Quick check if we can use fast array to bin string conversion
//
// - apply(Array) can fail on Android 2.2
// - apply(Uint8Array) can fail on iOS 5.1 Safari
//
var STR_APPLY_OK = true;
var STR_APPLY_UIA_OK = true;

try { String.fromCharCode.apply(null, [ 0 ]); } catch (__) { STR_APPLY_OK = false; }
try { String.fromCharCode.apply(null, new Uint8Array(1)); } catch (__) { STR_APPLY_UIA_OK = false; }


// Table with utf8 lengths (calculated by first byte of sequence)
// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS,
// because max possible codepoint is 0x10ffff
var _utf8len = new utils.Buf8(256);
for (var q = 0; q < 256; q++) {
  _utf8len[q] = (q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1);
}
_utf8len[254] = _utf8len[254] = 1; // Invalid sequence start


// convert string to array (typed, when possible)
exports.string2buf = function (str) {
  var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;

  // count binary size
  for (m_pos = 0; m_pos < str_len; m_pos++) {
    c = str.charCodeAt(m_pos);
    if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) {
      c2 = str.charCodeAt(m_pos + 1);
      if ((c2 & 0xfc00) === 0xdc00) {
        c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
        m_pos++;
      }
    }
    buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4;
  }

  // allocate buffer
  buf = new utils.Buf8(buf_len);

  // convert
  for (i = 0, m_pos = 0; i < buf_len; m_pos++) {
    c = str.charCodeAt(m_pos);
    if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) {
      c2 = str.charCodeAt(m_pos + 1);
      if ((c2 & 0xfc00) === 0xdc00) {
        c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
        m_pos++;
      }
    }
    if (c < 0x80) {
      /* one byte */
      buf[i++] = c;
    } else if (c < 0x800) {
      /* two bytes */
      buf[i++] = 0xC0 | (c >>> 6);
      buf[i++] = 0x80 | (c & 0x3f);
    } else if (c < 0x10000) {
      /* three bytes */
      buf[i++] = 0xE0 | (c >>> 12);
      buf[i++] = 0x80 | (c >>> 6 & 0x3f);
      buf[i++] = 0x80 | (c & 0x3f);
    } else {
      /* four bytes */
      buf[i++] = 0xf0 | (c >>> 18);
      buf[i++] = 0x80 | (c >>> 12 & 0x3f);
      buf[i++] = 0x80 | (c >>> 6 & 0x3f);
      buf[i++] = 0x80 | (c & 0x3f);
    }
  }

  return buf;
};

// Helper (used in 2 places)
function buf2binstring(buf, len) {
  // On Chrome, the arguments in a function call that are allowed is `65534`.
  // If the length of the buffer is smaller than that, we can use this optimization,
  // otherwise we will take a slower path.
  if (len < 65534) {
    if ((buf.subarray && STR_APPLY_UIA_OK) || (!buf.subarray && STR_APPLY_OK)) {
      return String.fromCharCode.apply(null, utils.shrinkBuf(buf, len));
    }
  }

  var result = '';
  for (var i = 0; i < len; i++) {
    result += String.fromCharCode(buf[i]);
  }
  return result;
}


// Convert byte array to binary string
exports.buf2binstring = function (buf) {
  return buf2binstring(buf, buf.length);
};


// Convert binary string (typed, when possible)
exports.binstring2buf = function (str) {
  var buf = new utils.Buf8(str.length);
  for (var i = 0, len = buf.length; i < len; i++) {
    buf[i] = str.charCodeAt(i);
  }
  return buf;
};


// convert array to string
exports.buf2string = function (buf, max) {
  var i, out, c, c_len;
  var len = max || buf.length;

  // Reserve max possible length (2 words per char)
  // NB: by unknown reasons, Array is significantly faster for
  //     String.fromCharCode.apply than Uint16Array.
  var utf16buf = new Array(len * 2);

  for (out = 0, i = 0; i < len;) {
    c = buf[i++];
    // quick process ascii
    if (c < 0x80) { utf16buf[out++] = c; continue; }

    c_len = _utf8len[c];
    // skip 5 & 6 byte codes
    if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len - 1; continue; }

    // apply mask on first byte
    c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07;
    // join the rest
    while (c_len > 1 && i < len) {
      c = (c << 6) | (buf[i++] & 0x3f);
      c_len--;
    }

    // terminated by end of string?
    if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; }

    if (c < 0x10000) {
      utf16buf[out++] = c;
    } else {
      c -= 0x10000;
      utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff);
      utf16buf[out++] = 0xdc00 | (c & 0x3ff);
    }
  }

  return buf2binstring(utf16buf, out);
};


// Calculate max possible position in utf8 buffer,
// that will not break sequence. If that's not possible
// - (very small limits) return max size as is.
//
// buf[] - utf8 bytes array
// max   - length limit (mandatory);
exports.utf8border = function (buf, max) {
  var pos;

  max = max || buf.length;
  if (max > buf.length) { max = buf.length; }

  // go back from last position, until start of sequence found
  pos = max - 1;
  while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; }

  // Very small and broken sequence,
  // return max, because we should return something anyway.
  if (pos < 0) { return max; }

  // If we came to start of buffer - that means buffer is too small,
  // return max too.
  if (pos === 0) { return max; }

  return (pos + _utf8len[buf[pos]] > max) ? pos : max;
};

},{"./common":292}],294:[function(require,module,exports){
'use strict';

// Note: adler32 takes 12% for level 0 and 2% for level 6.
// It isn't worth it to make additional optimizations as in original.
// Small size is preferable.

// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

function adler32(adler, buf, len, pos) {
  var s1 = (adler & 0xffff) |0,
      s2 = ((adler >>> 16) & 0xffff) |0,
      n = 0;

  while (len !== 0) {
    // Set limit ~ twice less than 5552, to keep
    // s2 in 31-bits, because we force signed ints.
    // in other case %= will fail.
    n = len > 2000 ? 2000 : len;
    len -= n;

    do {
      s1 = (s1 + buf[pos++]) |0;
      s2 = (s2 + s1) |0;
    } while (--n);

    s1 %= 65521;
    s2 %= 65521;
  }

  return (s1 | (s2 << 16)) |0;
}


module.exports = adler32;

},{}],295:[function(require,module,exports){
'use strict';

// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

module.exports = {

  /* Allowed flush values; see deflate() and inflate() below for details */
  Z_NO_FLUSH:         0,
  Z_PARTIAL_FLUSH:    1,
  Z_SYNC_FLUSH:       2,
  Z_FULL_FLUSH:       3,
  Z_FINISH:           4,
  Z_BLOCK:            5,
  Z_TREES:            6,

  /* Return codes for the compression/decompression functions. Negative values
  * are errors, positive values are used for special but normal events.
  */
  Z_OK:               0,
  Z_STREAM_END:       1,
  Z_NEED_DICT:        2,
  Z_ERRNO:           -1,
  Z_STREAM_ERROR:    -2,
  Z_DATA_ERROR:      -3,
  //Z_MEM_ERROR:     -4,
  Z_BUF_ERROR:       -5,
  //Z_VERSION_ERROR: -6,

  /* compression levels */
  Z_NO_COMPRESSION:         0,
  Z_BEST_SPEED:             1,
  Z_BEST_COMPRESSION:       9,
  Z_DEFAULT_COMPRESSION:   -1,


  Z_FILTERED:               1,
  Z_HUFFMAN_ONLY:           2,
  Z_RLE:                    3,
  Z_FIXED:                  4,
  Z_DEFAULT_STRATEGY:       0,

  /* Possible values of the data_type field (though see inflate()) */
  Z_BINARY:                 0,
  Z_TEXT:                   1,
  //Z_ASCII:                1, // = Z_TEXT (deprecated)
  Z_UNKNOWN:                2,

  /* The deflate compression method */
  Z_DEFLATED:               8
  //Z_NULL:                 null // Use -1 or null inline, depending on var type
};

},{}],296:[function(require,module,exports){
'use strict';

// Note: we can't get significant speed boost here.
// So write code to minimize size - no pregenerated tables
// and array tools dependencies.

// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

// Use ordinary array, since untyped makes no boost here
function makeTable() {
  var c, table = [];

  for (var n = 0; n < 256; n++) {
    c = n;
    for (var k = 0; k < 8; k++) {
      c = ((c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));
    }
    table[n] = c;
  }

  return table;
}

// Create table on load. Just 255 signed longs. Not a problem.
var crcTable = makeTable();


function crc32(crc, buf, len, pos) {
  var t = crcTable,
      end = pos + len;

  crc ^= -1;

  for (var i = pos; i < end; i++) {
    crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];
  }

  return (crc ^ (-1)); // >>> 0;
}


module.exports = crc32;

},{}],297:[function(require,module,exports){
'use strict';

// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

var utils   = require('../utils/common');
var trees   = require('./trees');
var adler32 = require('./adler32');
var crc32   = require('./crc32');
var msg     = require('./messages');

/* Public constants ==========================================================*/
/* ===========================================================================*/


/* Allowed flush values; see deflate() and inflate() below for details */
var Z_NO_FLUSH      = 0;
var Z_PARTIAL_FLUSH = 1;
//var Z_SYNC_FLUSH    = 2;
var Z_FULL_FLUSH    = 3;
var Z_FINISH        = 4;
var Z_BLOCK         = 5;
//var Z_TREES         = 6;


/* Return codes for the compression/decompression functions. Negative values
 * are errors, positive values are used for special but normal events.
 */
var Z_OK            = 0;
var Z_STREAM_END    = 1;
//var Z_NEED_DICT     = 2;
//var Z_ERRNO         = -1;
var Z_STREAM_ERROR  = -2;
var Z_DATA_ERROR    = -3;
//var Z_MEM_ERROR     = -4;
var Z_BUF_ERROR     = -5;
//var Z_VERSION_ERROR = -6;


/* compression levels */
//var Z_NO_COMPRESSION      = 0;
//var Z_BEST_SPEED          = 1;
//var Z_BEST_COMPRESSION    = 9;
var Z_DEFAULT_COMPRESSION = -1;


var Z_FILTERED            = 1;
var Z_HUFFMAN_ONLY        = 2;
var Z_RLE                 = 3;
var Z_FIXED               = 4;
var Z_DEFAULT_STRATEGY    = 0;

/* Possible values of the data_type field (though see inflate()) */
//var Z_BINARY              = 0;
//var Z_TEXT                = 1;
//var Z_ASCII               = 1; // = Z_TEXT
var Z_UNKNOWN             = 2;


/* The deflate compression method */
var Z_DEFLATED  = 8;

/*============================================================================*/


var MAX_MEM_LEVEL = 9;
/* Maximum value for memLevel in deflateInit2 */
var MAX_WBITS = 15;
/* 32K LZ77 window */
var DEF_MEM_LEVEL = 8;


var LENGTH_CODES  = 29;
/* number of length codes, not counting the special END_BLOCK code */
var LITERALS      = 256;
/* number of literal bytes 0..255 */
var L_CODES       = LITERALS + 1 + LENGTH_CODES;
/* number of Literal or Length codes, including the END_BLOCK code */
var D_CODES       = 30;
/* number of distance codes */
var BL_CODES      = 19;
/* number of codes used to transfer the bit lengths */
var HEAP_SIZE     = 2 * L_CODES + 1;
/* maximum heap size */
var MAX_BITS  = 15;
/* All codes must not exceed MAX_BITS bits */

var MIN_MATCH = 3;
var MAX_MATCH = 258;
var MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);

var PRESET_DICT = 0x20;

var INIT_STATE = 42;
var EXTRA_STATE = 69;
var NAME_STATE = 73;
var COMMENT_STATE = 91;
var HCRC_STATE = 103;
var BUSY_STATE = 113;
var FINISH_STATE = 666;

var BS_NEED_MORE      = 1; /* block not completed, need more input or more output */
var BS_BLOCK_DONE     = 2; /* block flush performed */
var BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */
var BS_FINISH_DONE    = 4; /* finish done, accept no more input or output */

var OS_CODE = 0x03; // Unix :) . Don't detect, use this default.

function err(strm, errorCode) {
  strm.msg = msg[errorCode];
  return errorCode;
}

function rank(f) {
  return ((f) << 1) - ((f) > 4 ? 9 : 0);
}

function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }


/* =========================================================================
 * Flush as much pending output as possible. All deflate() output goes
 * through this function so some applications may wish to modify it
 * to avoid allocating a large strm->output buffer and copying into it.
 * (See also read_buf()).
 */
function flush_pending(strm) {
  var s = strm.state;

  //_tr_flush_bits(s);
  var len = s.pending;
  if (len > strm.avail_out) {
    len = strm.avail_out;
  }
  if (len === 0) { return; }

  utils.arraySet(strm.output, s.pending_buf, s.pending_out, len, strm.next_out);
  strm.next_out += len;
  s.pending_out += len;
  strm.total_out += len;
  strm.avail_out -= len;
  s.pending -= len;
  if (s.pending === 0) {
    s.pending_out = 0;
  }
}


function flush_block_only(s, last) {
  trees._tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last);
  s.block_start = s.strstart;
  flush_pending(s.strm);
}


function put_byte(s, b) {
  s.pending_buf[s.pending++] = b;
}


/* =========================================================================
 * Put a short in the pending buffer. The 16-bit value is put in MSB order.
 * IN assertion: the stream state is correct and there is enough room in
 * pending_buf.
 */
function putShortMSB(s, b) {
//  put_byte(s, (Byte)(b >> 8));
//  put_byte(s, (Byte)(b & 0xff));
  s.pending_buf[s.pending++] = (b >>> 8) & 0xff;
  s.pending_buf[s.pending++] = b & 0xff;
}


/* ===========================================================================
 * Read a new buffer from the current input stream, update the adler32
 * and total number of bytes read.  All deflate() input goes through
 * this function so some applications may wish to modify it to avoid
 * allocating a large strm->input buffer and copying from it.
 * (See also flush_pending()).
 */
function read_buf(strm, buf, start, size) {
  var len = strm.avail_in;

  if (len > size) { len = size; }
  if (len === 0) { return 0; }

  strm.avail_in -= len;

  // zmemcpy(buf, strm->next_in, len);
  utils.arraySet(buf, strm.input, strm.next_in, len, start);
  if (strm.state.wrap === 1) {
    strm.adler = adler32(strm.adler, buf, len, start);
  }

  else if (strm.state.wrap === 2) {
    strm.adler = crc32(strm.adler, buf, len, start);
  }

  strm.next_in += len;
  strm.total_in += len;

  return len;
}


/* ===========================================================================
 * Set match_start to the longest match starting at the given string and
 * return its length. Matches shorter or equal to prev_length are discarded,
 * in which case the result is equal to prev_length and match_start is
 * garbage.
 * IN assertions: cur_match is the head of the hash chain for the current
 *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
 * OUT assertion: the match length is not greater than s->lookahead.
 */
function longest_match(s, cur_match) {
  var chain_length = s.max_chain_length;      /* max hash chain length */
  var scan = s.strstart; /* current string */
  var match;                       /* matched string */
  var len;                           /* length of current match */
  var best_len = s.prev_length;              /* best match length so far */
  var nice_match = s.nice_match;             /* stop if match long enough */
  var limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ?
      s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/;

  var _win = s.window; // shortcut

  var wmask = s.w_mask;
  var prev  = s.prev;

  /* Stop when cur_match becomes <= limit. To simplify the code,
   * we prevent matches with the string of window index 0.
   */

  var strend = s.strstart + MAX_MATCH;
  var scan_end1  = _win[scan + best_len - 1];
  var scan_end   = _win[scan + best_len];

  /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
   * It is easy to get rid of this optimization if necessary.
   */
  // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");

  /* Do not waste too much time if we already have a good match: */
  if (s.prev_length >= s.good_match) {
    chain_length >>= 2;
  }
  /* Do not look for matches beyond the end of the input. This is necessary
   * to make deflate deterministic.
   */
  if (nice_match > s.lookahead) { nice_match = s.lookahead; }

  // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");

  do {
    // Assert(cur_match < s->strstart, "no future");
    match = cur_match;

    /* Skip to next match if the match length cannot increase
     * or if the match length is less than 2.  Note that the checks below
     * for insufficient lookahead only occur occasionally for performance
     * reasons.  Therefore uninitialized memory will be accessed, and
     * conditional jumps will be made that depend on those values.
     * However the length of the match is limited to the lookahead, so
     * the output of deflate is not affected by the uninitialized values.
     */

    if (_win[match + best_len]     !== scan_end  ||
        _win[match + best_len - 1] !== scan_end1 ||
        _win[match]                !== _win[scan] ||
        _win[++match]              !== _win[scan + 1]) {
      continue;
    }

    /* The check at best_len-1 can be removed because it will be made
     * again later. (This heuristic is not always a win.)
     * It is not necessary to compare scan[2] and match[2] since they
     * are always equal when the other bytes match, given that
     * the hash keys are equal and that HASH_BITS >= 8.
     */
    scan += 2;
    match++;
    // Assert(*scan == *match, "match[2]?");

    /* We check for insufficient lookahead only every 8th comparison;
     * the 256th check will be made at strstart+258.
     */
    do {
      /*jshint noempty:false*/
    } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             scan < strend);

    // Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");

    len = MAX_MATCH - (strend - scan);
    scan = strend - MAX_MATCH;

    if (len > best_len) {
      s.match_start = cur_match;
      best_len = len;
      if (len >= nice_match) {
        break;
      }
      scan_end1  = _win[scan + best_len - 1];
      scan_end   = _win[scan + best_len];
    }
  } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0);

  if (best_len <= s.lookahead) {
    return best_len;
  }
  return s.lookahead;
}


/* ===========================================================================
 * Fill the window when the lookahead becomes insufficient.
 * Updates strstart and lookahead.
 *
 * IN assertion: lookahead < MIN_LOOKAHEAD
 * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
 *    At least one byte has been read, or avail_in == 0; reads are
 *    performed for at least two bytes (required for the zip translate_eol
 *    option -- not supported here).
 */
function fill_window(s) {
  var _w_size = s.w_size;
  var p, n, m, more, str;

  //Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");

  do {
    more = s.window_size - s.lookahead - s.strstart;

    // JS ints have 32 bit, block below not needed
    /* Deal with !@#$% 64K limit: */
    //if (sizeof(int) <= 2) {
    //    if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
    //        more = wsize;
    //
    //  } else if (more == (unsigned)(-1)) {
    //        /* Very unlikely, but possible on 16 bit machine if
    //         * strstart == 0 && lookahead == 1 (input done a byte at time)
    //         */
    //        more--;
    //    }
    //}


    /* If the window is almost full and there is insufficient lookahead,
     * move the upper half to the lower one to make room in the upper half.
     */
    if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) {

      utils.arraySet(s.window, s.window, _w_size, _w_size, 0);
      s.match_start -= _w_size;
      s.strstart -= _w_size;
      /* we now have strstart >= MAX_DIST */
      s.block_start -= _w_size;

      /* Slide the hash table (could be avoided with 32 bit values
       at the expense of memory usage). We slide even when level == 0
       to keep the hash table consistent if we switch back to level > 0
       later. (Using level 0 permanently is not an optimal usage of
       zlib, so we don't care about this pathological case.)
       */

      n = s.hash_size;
      p = n;
      do {
        m = s.head[--p];
        s.head[p] = (m >= _w_size ? m - _w_size : 0);
      } while (--n);

      n = _w_size;
      p = n;
      do {
        m = s.prev[--p];
        s.prev[p] = (m >= _w_size ? m - _w_size : 0);
        /* If n is not on any hash chain, prev[n] is garbage but
         * its value will never be used.
         */
      } while (--n);

      more += _w_size;
    }
    if (s.strm.avail_in === 0) {
      break;
    }

    /* If there was no sliding:
     *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
     *    more == window_size - lookahead - strstart
     * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
     * => more >= window_size - 2*WSIZE + 2
     * In the BIG_MEM or MMAP case (not yet supported),
     *   window_size == input_size + MIN_LOOKAHEAD  &&
     *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
     * Otherwise, window_size == 2*WSIZE so more >= 2.
     * If there was sliding, more >= WSIZE. So in all cases, more >= 2.
     */
    //Assert(more >= 2, "more < 2");
    n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more);
    s.lookahead += n;

    /* Initialize the hash value now that we have some input: */
    if (s.lookahead + s.insert >= MIN_MATCH) {
      str = s.strstart - s.insert;
      s.ins_h = s.window[str];

      /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + 1]) & s.hash_mask;
//#if MIN_MATCH != 3
//        Call update_hash() MIN_MATCH-3 more times
//#endif
      while (s.insert) {
        /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask;

        s.prev[str & s.w_mask] = s.head[s.ins_h];
        s.head[s.ins_h] = str;
        str++;
        s.insert--;
        if (s.lookahead + s.insert < MIN_MATCH) {
          break;
        }
      }
    }
    /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
     * but this is not important since only literal bytes will be emitted.
     */

  } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0);

  /* If the WIN_INIT bytes after the end of the current data have never been
   * written, then zero those bytes in order to avoid memory check reports of
   * the use of uninitialized (or uninitialised as Julian writes) bytes by
   * the longest match routines.  Update the high water mark for the next
   * time through here.  WIN_INIT is set to MAX_MATCH since the longest match
   * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.
   */
//  if (s.high_water < s.window_size) {
//    var curr = s.strstart + s.lookahead;
//    var init = 0;
//
//    if (s.high_water < curr) {
//      /* Previous high water mark below current data -- zero WIN_INIT
//       * bytes or up to end of window, whichever is less.
//       */
//      init = s.window_size - curr;
//      if (init > WIN_INIT)
//        init = WIN_INIT;
//      zmemzero(s->window + curr, (unsigned)init);
//      s->high_water = curr + init;
//    }
//    else if (s->high_water < (ulg)curr + WIN_INIT) {
//      /* High water mark at or above current data, but below current data
//       * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up
//       * to end of window, whichever is less.
//       */
//      init = (ulg)curr + WIN_INIT - s->high_water;
//      if (init > s->window_size - s->high_water)
//        init = s->window_size - s->high_water;
//      zmemzero(s->window + s->high_water, (unsigned)init);
//      s->high_water += init;
//    }
//  }
//
//  Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
//    "not enough room for search");
}

/* ===========================================================================
 * Copy without compression as much as possible from the input stream, return
 * the current block state.
 * This function does not insert new strings in the dictionary since
 * uncompressible data is probably not useful. This function is used
 * only for the level=0 compression option.
 * NOTE: this function should be optimized to avoid extra copying from
 * window to pending_buf.
 */
function deflate_stored(s, flush) {
  /* Stored blocks are limited to 0xffff bytes, pending_buf is limited
   * to pending_buf_size, and each stored block has a 5 byte header:
   */
  var max_block_size = 0xffff;

  if (max_block_size > s.pending_buf_size - 5) {
    max_block_size = s.pending_buf_size - 5;
  }

  /* Copy as much as possible from input to output: */
  for (;;) {
    /* Fill the window as much as possible: */
    if (s.lookahead <= 1) {

      //Assert(s->strstart < s->w_size+MAX_DIST(s) ||
      //  s->block_start >= (long)s->w_size, "slide too late");
//      if (!(s.strstart < s.w_size + (s.w_size - MIN_LOOKAHEAD) ||
//        s.block_start >= s.w_size)) {
//        throw  new Error("slide too late");
//      }

      fill_window(s);
      if (s.lookahead === 0 && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }

      if (s.lookahead === 0) {
        break;
      }
      /* flush the current block */
    }
    //Assert(s->block_start >= 0L, "block gone");
//    if (s.block_start < 0) throw new Error("block gone");

    s.strstart += s.lookahead;
    s.lookahead = 0;

    /* Emit a stored block if pending_buf will be full: */
    var max_start = s.block_start + max_block_size;

    if (s.strstart === 0 || s.strstart >= max_start) {
      /* strstart == 0 is possible when wraparound on 16-bit machine */
      s.lookahead = s.strstart - max_start;
      s.strstart = max_start;
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/


    }
    /* Flush if we may have to slide, otherwise block_start may become
     * negative and the data will be gone:
     */
    if (s.strstart - s.block_start >= (s.w_size - MIN_LOOKAHEAD)) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }

  s.insert = 0;

  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }

  if (s.strstart > s.block_start) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }

  return BS_NEED_MORE;
}

/* ===========================================================================
 * Compress as much as possible from the input stream, return the current
 * block state.
 * This function does not perform lazy evaluation of matches and inserts
 * new strings in the dictionary only for unmatched strings or for short
 * matches. It is used only for the fast compression options.
 */
function deflate_fast(s, flush) {
  var hash_head;        /* head of the hash chain */
  var bflush;           /* set if current block must be flushed */

  for (;;) {
    /* Make sure that we always have enough lookahead, except
     * at the end of the input file. We need MAX_MATCH bytes
     * for the next match, plus MIN_MATCH bytes to insert the
     * string following the next match.
     */
    if (s.lookahead < MIN_LOOKAHEAD) {
      fill_window(s);
      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }
      if (s.lookahead === 0) {
        break; /* flush the current block */
      }
    }

    /* Insert the string window[strstart .. strstart+2] in the
     * dictionary, and set hash_head to the head of the hash chain:
     */
    hash_head = 0/*NIL*/;
    if (s.lookahead >= MIN_MATCH) {
      /*** INSERT_STRING(s, s.strstart, hash_head); ***/
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
      s.head[s.ins_h] = s.strstart;
      /***/
    }

    /* Find the longest match, discarding those <= prev_length.
     * At this point we have always match_length < MIN_MATCH
     */
    if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) {
      /* To simplify the code, we prevent matches with the string
       * of window index 0 (in particular we have to avoid a match
       * of the string with itself at the start of the input file).
       */
      s.match_length = longest_match(s, hash_head);
      /* longest_match() sets match_start */
    }
    if (s.match_length >= MIN_MATCH) {
      // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only

      /*** _tr_tally_dist(s, s.strstart - s.match_start,
                     s.match_length - MIN_MATCH, bflush); ***/
      bflush = trees._tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH);

      s.lookahead -= s.match_length;

      /* Insert new strings in the hash table only if the match length
       * is not too large. This saves time but degrades compression.
       */
      if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) {
        s.match_length--; /* string at strstart already in table */
        do {
          s.strstart++;
          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
          s.head[s.ins_h] = s.strstart;
          /***/
          /* strstart never exceeds WSIZE-MAX_MATCH, so there are
           * always MIN_MATCH bytes ahead.
           */
        } while (--s.match_length !== 0);
        s.strstart++;
      } else
      {
        s.strstart += s.match_length;
        s.match_length = 0;
        s.ins_h = s.window[s.strstart];
        /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */
        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + 1]) & s.hash_mask;

//#if MIN_MATCH != 3
//                Call UPDATE_HASH() MIN_MATCH-3 more times
//#endif
        /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
         * matter since it will be recomputed at next deflate call.
         */
      }
    } else {
      /* No match, output a literal byte */
      //Tracevv((stderr,"%c", s.window[s.strstart]));
      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);

      s.lookahead--;
      s.strstart++;
    }
    if (bflush) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }
  s.insert = ((s.strstart < (MIN_MATCH - 1)) ? s.strstart : MIN_MATCH - 1);
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }
  return BS_BLOCK_DONE;
}

/* ===========================================================================
 * Same as above, but achieves better compression. We use a lazy
 * evaluation for matches: a match is finally adopted only if there is
 * no better match at the next window position.
 */
function deflate_slow(s, flush) {
  var hash_head;          /* head of hash chain */
  var bflush;              /* set if current block must be flushed */

  var max_insert;

  /* Process the input block. */
  for (;;) {
    /* Make sure that we always have enough lookahead, except
     * at the end of the input file. We need MAX_MATCH bytes
     * for the next match, plus MIN_MATCH bytes to insert the
     * string following the next match.
     */
    if (s.lookahead < MIN_LOOKAHEAD) {
      fill_window(s);
      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }
      if (s.lookahead === 0) { break; } /* flush the current block */
    }

    /* Insert the string window[strstart .. strstart+2] in the
     * dictionary, and set hash_head to the head of the hash chain:
     */
    hash_head = 0/*NIL*/;
    if (s.lookahead >= MIN_MATCH) {
      /*** INSERT_STRING(s, s.strstart, hash_head); ***/
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
      s.head[s.ins_h] = s.strstart;
      /***/
    }

    /* Find the longest match, discarding those <= prev_length.
     */
    s.prev_length = s.match_length;
    s.prev_match = s.match_start;
    s.match_length = MIN_MATCH - 1;

    if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match &&
        s.strstart - hash_head <= (s.w_size - MIN_LOOKAHEAD)/*MAX_DIST(s)*/) {
      /* To simplify the code, we prevent matches with the string
       * of window index 0 (in particular we have to avoid a match
       * of the string with itself at the start of the input file).
       */
      s.match_length = longest_match(s, hash_head);
      /* longest_match() sets match_start */

      if (s.match_length <= 5 &&
         (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) {

        /* If prev_match is also MIN_MATCH, match_start is garbage
         * but we will ignore the current match anyway.
         */
        s.match_length = MIN_MATCH - 1;
      }
    }
    /* If there was a match at the previous step and the current
     * match is not better, output the previous match:
     */
    if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) {
      max_insert = s.strstart + s.lookahead - MIN_MATCH;
      /* Do not insert strings in hash table beyond this. */

      //check_match(s, s.strstart-1, s.prev_match, s.prev_length);

      /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match,
                     s.prev_length - MIN_MATCH, bflush);***/
      bflush = trees._tr_tally(s, s.strstart - 1 - s.prev_match, s.prev_length - MIN_MATCH);
      /* Insert in hash table all strings up to the end of the match.
       * strstart-1 and strstart are already inserted. If there is not
       * enough lookahead, the last two strings are not inserted in
       * the hash table.
       */
      s.lookahead -= s.prev_length - 1;
      s.prev_length -= 2;
      do {
        if (++s.strstart <= max_insert) {
          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
          s.head[s.ins_h] = s.strstart;
          /***/
        }
      } while (--s.prev_length !== 0);
      s.match_available = 0;
      s.match_length = MIN_MATCH - 1;
      s.strstart++;

      if (bflush) {
        /*** FLUSH_BLOCK(s, 0); ***/
        flush_block_only(s, false);
        if (s.strm.avail_out === 0) {
          return BS_NEED_MORE;
        }
        /***/
      }

    } else if (s.match_available) {
      /* If there was no match at the previous position, output a
       * single literal. If there was a match but the current match
       * is longer, truncate the previous match to a single literal.
       */
      //Tracevv((stderr,"%c", s->window[s->strstart-1]));
      /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
      bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]);

      if (bflush) {
        /*** FLUSH_BLOCK_ONLY(s, 0) ***/
        flush_block_only(s, false);
        /***/
      }
      s.strstart++;
      s.lookahead--;
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
    } else {
      /* There is no previous match to compare with, wait for
       * the next step to decide.
       */
      s.match_available = 1;
      s.strstart++;
      s.lookahead--;
    }
  }
  //Assert (flush != Z_NO_FLUSH, "no flush?");
  if (s.match_available) {
    //Tracevv((stderr,"%c", s->window[s->strstart-1]));
    /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
    bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]);

    s.match_available = 0;
  }
  s.insert = s.strstart < MIN_MATCH - 1 ? s.strstart : MIN_MATCH - 1;
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }

  return BS_BLOCK_DONE;
}


/* ===========================================================================
 * For Z_RLE, simply look for runs of bytes, generate matches only of distance
 * one.  Do not maintain a hash table.  (It will be regenerated if this run of
 * deflate switches away from Z_RLE.)
 */
function deflate_rle(s, flush) {
  var bflush;            /* set if current block must be flushed */
  var prev;              /* byte at distance one to match */
  var scan, strend;      /* scan goes up to strend for length of run */

  var _win = s.window;

  for (;;) {
    /* Make sure that we always have enough lookahead, except
     * at the end of the input file. We need MAX_MATCH bytes
     * for the longest run, plus one for the unrolled loop.
     */
    if (s.lookahead <= MAX_MATCH) {
      fill_window(s);
      if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }
      if (s.lookahead === 0) { break; } /* flush the current block */
    }

    /* See how many times the previous byte repeats */
    s.match_length = 0;
    if (s.lookahead >= MIN_MATCH && s.strstart > 0) {
      scan = s.strstart - 1;
      prev = _win[scan];
      if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) {
        strend = s.strstart + MAX_MATCH;
        do {
          /*jshint noempty:false*/
        } while (prev === _win[++scan] && prev === _win[++scan] &&
                 prev === _win[++scan] && prev === _win[++scan] &&
                 prev === _win[++scan] && prev === _win[++scan] &&
                 prev === _win[++scan] && prev === _win[++scan] &&
                 scan < strend);
        s.match_length = MAX_MATCH - (strend - scan);
        if (s.match_length > s.lookahead) {
          s.match_length = s.lookahead;
        }
      }
      //Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan");
    }

    /* Emit match if have run of MIN_MATCH or longer, else emit literal */
    if (s.match_length >= MIN_MATCH) {
      //check_match(s, s.strstart, s.strstart - 1, s.match_length);

      /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/
      bflush = trees._tr_tally(s, 1, s.match_length - MIN_MATCH);

      s.lookahead -= s.match_length;
      s.strstart += s.match_length;
      s.match_length = 0;
    } else {
      /* No match, output a literal byte */
      //Tracevv((stderr,"%c", s->window[s->strstart]));
      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);

      s.lookahead--;
      s.strstart++;
    }
    if (bflush) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }
  s.insert = 0;
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }
  return BS_BLOCK_DONE;
}

/* ===========================================================================
 * For Z_HUFFMAN_ONLY, do not look for matches.  Do not maintain a hash table.
 * (It will be regenerated if this run of deflate switches away from Huffman.)
 */
function deflate_huff(s, flush) {
  var bflush;             /* set if current block must be flushed */

  for (;;) {
    /* Make sure that we have a literal to write. */
    if (s.lookahead === 0) {
      fill_window(s);
      if (s.lookahead === 0) {
        if (flush === Z_NO_FLUSH) {
          return BS_NEED_MORE;
        }
        break;      /* flush the current block */
      }
    }

    /* Output a literal byte */
    s.match_length = 0;
    //Tracevv((stderr,"%c", s->window[s->strstart]));
    /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
    bflush = trees._tr_tally(s, 0, s.window[s.strstart]);
    s.lookahead--;
    s.strstart++;
    if (bflush) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }
  s.insert = 0;
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }
  return BS_BLOCK_DONE;
}

/* Values for max_lazy_match, good_match and max_chain_length, depending on
 * the desired pack level (0..9). The values given below have been tuned to
 * exclude worst case performance for pathological files. Better values may be
 * found for specific files.
 */
function Config(good_length, max_lazy, nice_length, max_chain, func) {
  this.good_length = good_length;
  this.max_lazy = max_lazy;
  this.nice_length = nice_length;
  this.max_chain = max_chain;
  this.func = func;
}

var configuration_table;

configuration_table = [
  /*      good lazy nice chain */
  new Config(0, 0, 0, 0, deflate_stored),          /* 0 store only */
  new Config(4, 4, 8, 4, deflate_fast),            /* 1 max speed, no lazy matches */
  new Config(4, 5, 16, 8, deflate_fast),           /* 2 */
  new Config(4, 6, 32, 32, deflate_fast),          /* 3 */

  new Config(4, 4, 16, 16, deflate_slow),          /* 4 lazy matches */
  new Config(8, 16, 32, 32, deflate_slow),         /* 5 */
  new Config(8, 16, 128, 128, deflate_slow),       /* 6 */
  new Config(8, 32, 128, 256, deflate_slow),       /* 7 */
  new Config(32, 128, 258, 1024, deflate_slow),    /* 8 */
  new Config(32, 258, 258, 4096, deflate_slow)     /* 9 max compression */
];


/* ===========================================================================
 * Initialize the "longest match" routines for a new zlib stream
 */
function lm_init(s) {
  s.window_size = 2 * s.w_size;

  /*** CLEAR_HASH(s); ***/
  zero(s.head); // Fill with NIL (= 0);

  /* Set the default configuration parameters:
   */
  s.max_lazy_match = configuration_table[s.level].max_lazy;
  s.good_match = configuration_table[s.level].good_length;
  s.nice_match = configuration_table[s.level].nice_length;
  s.max_chain_length = configuration_table[s.level].max_chain;

  s.strstart = 0;
  s.block_start = 0;
  s.lookahead = 0;
  s.insert = 0;
  s.match_length = s.prev_length = MIN_MATCH - 1;
  s.match_available = 0;
  s.ins_h = 0;
}


function DeflateState() {
  this.strm = null;            /* pointer back to this zlib stream */
  this.status = 0;            /* as the name implies */
  this.pending_buf = null;      /* output still pending */
  this.pending_buf_size = 0;  /* size of pending_buf */
  this.pending_out = 0;       /* next pending byte to output to the stream */
  this.pending = 0;           /* nb of bytes in the pending buffer */
  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */
  this.gzhead = null;         /* gzip header information to write */
  this.gzindex = 0;           /* where in extra, name, or comment */
  this.method = Z_DEFLATED; /* can only be DEFLATED */
  this.last_flush = -1;   /* value of flush param for previous deflate call */

  this.w_size = 0;  /* LZ77 window size (32K by default) */
  this.w_bits = 0;  /* log2(w_size)  (8..16) */
  this.w_mask = 0;  /* w_size - 1 */

  this.window = null;
  /* Sliding window. Input bytes are read into the second half of the window,
   * and move to the first half later to keep a dictionary of at least wSize
   * bytes. With this organization, matches are limited to a distance of
   * wSize-MAX_MATCH bytes, but this ensures that IO is always
   * performed with a length multiple of the block size.
   */

  this.window_size = 0;
  /* Actual size of window: 2*wSize, except when the user input buffer
   * is directly used as sliding window.
   */

  this.prev = null;
  /* Link to older string with same hash index. To limit the size of this
   * array to 64K, this link is maintained only for the last 32K strings.
   * An index in this array is thus a window index modulo 32K.
   */

  this.head = null;   /* Heads of the hash chains or NIL. */

  this.ins_h = 0;       /* hash index of string to be inserted */
  this.hash_size = 0;   /* number of elements in hash table */
  this.hash_bits = 0;   /* log2(hash_size) */
  this.hash_mask = 0;   /* hash_size-1 */

  this.hash_shift = 0;
  /* Number of bits by which ins_h must be shifted at each input
   * step. It must be such that after MIN_MATCH steps, the oldest
   * byte no longer takes part in the hash key, that is:
   *   hash_shift * MIN_MATCH >= hash_bits
   */

  this.block_start = 0;
  /* Window position at the beginning of the current output block. Gets
   * negative when the window is moved backwards.
   */

  this.match_length = 0;      /* length of best match */
  this.prev_match = 0;        /* previous match */
  this.match_available = 0;   /* set if previous match exists */
  this.strstart = 0;          /* start of string to insert */
  this.match_start = 0;       /* start of matching string */
  this.lookahead = 0;         /* number of valid bytes ahead in window */

  this.prev_length = 0;
  /* Length of the best match at previous step. Matches not greater than this
   * are discarded. This is used in the lazy match evaluation.
   */

  this.max_chain_length = 0;
  /* To speed up deflation, hash chains are never searched beyond this
   * length.  A higher limit improves compression ratio but degrades the
   * speed.
   */

  this.max_lazy_match = 0;
  /* Attempt to find a better match only when the current match is strictly
   * smaller than this value. This mechanism is used only for compression
   * levels >= 4.
   */
  // That's alias to max_lazy_match, don't use directly
  //this.max_insert_length = 0;
  /* Insert new strings in the hash table only if the match length is not
   * greater than this length. This saves time but degrades compression.
   * max_insert_length is used only for compression levels <= 3.
   */

  this.level = 0;     /* compression level (1..9) */
  this.strategy = 0;  /* favor or force Huffman coding*/

  this.good_match = 0;
  /* Use a faster search when the previous match is longer than this */

  this.nice_match = 0; /* Stop searching when current match exceeds this */

              /* used by trees.c: */

  /* Didn't use ct_data typedef below to suppress compiler warning */

  // struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */
  // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
  // struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */

  // Use flat array of DOUBLE size, with interleaved fata,
  // because JS does not support effective
  this.dyn_ltree  = new utils.Buf16(HEAP_SIZE * 2);
  this.dyn_dtree  = new utils.Buf16((2 * D_CODES + 1) * 2);
  this.bl_tree    = new utils.Buf16((2 * BL_CODES + 1) * 2);
  zero(this.dyn_ltree);
  zero(this.dyn_dtree);
  zero(this.bl_tree);

  this.l_desc   = null;         /* desc. for literal tree */
  this.d_desc   = null;         /* desc. for distance tree */
  this.bl_desc  = null;         /* desc. for bit length tree */

  //ush bl_count[MAX_BITS+1];
  this.bl_count = new utils.Buf16(MAX_BITS + 1);
  /* number of codes at each bit length for an optimal tree */

  //int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */
  this.heap = new utils.Buf16(2 * L_CODES + 1);  /* heap used to build the Huffman trees */
  zero(this.heap);

  this.heap_len = 0;               /* number of elements in the heap */
  this.heap_max = 0;               /* element of largest frequency */
  /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
   * The same heap array is used to build all trees.
   */

  this.depth = new utils.Buf16(2 * L_CODES + 1); //uch depth[2*L_CODES+1];
  zero(this.depth);
  /* Depth of each subtree used as tie breaker for trees of equal frequency
   */

  this.l_buf = 0;          /* buffer index for literals or lengths */

  this.lit_bufsize = 0;
  /* Size of match buffer for literals/lengths.  There are 4 reasons for
   * limiting lit_bufsize to 64K:
   *   - frequencies can be kept in 16 bit counters
   *   - if compression is not successful for the first block, all input
   *     data is still in the window so we can still emit a stored block even
   *     when input comes from standard input.  (This can also be done for
   *     all blocks if lit_bufsize is not greater than 32K.)
   *   - if compression is not successful for a file smaller than 64K, we can
   *     even emit a stored file instead of a stored block (saving 5 bytes).
   *     This is applicable only for zip (not gzip or zlib).
   *   - creating new Huffman trees less frequently may not provide fast
   *     adaptation to changes in the input data statistics. (Take for
   *     example a binary file with poorly compressible code followed by
   *     a highly compressible string table.) Smaller buffer sizes give
   *     fast adaptation but have of course the overhead of transmitting
   *     trees more frequently.
   *   - I can't count above 4
   */

  this.last_lit = 0;      /* running index in l_buf */

  this.d_buf = 0;
  /* Buffer index for distances. To simplify the code, d_buf and l_buf have
   * the same number of elements. To use different lengths, an extra flag
   * array would be necessary.
   */

  this.opt_len = 0;       /* bit length of current block with optimal trees */
  this.static_len = 0;    /* bit length of current block with static trees */
  this.matches = 0;       /* number of string matches in current block */
  this.insert = 0;        /* bytes at end of window left to insert */


  this.bi_buf = 0;
  /* Output buffer. bits are inserted starting at the bottom (least
   * significant bits).
   */
  this.bi_valid = 0;
  /* Number of valid bits in bi_buf.  All bits above the last valid bit
   * are always zero.
   */

  // Used for window memory init. We safely ignore it for JS. That makes
  // sense only for pointers and memory check tools.
  //this.high_water = 0;
  /* High water mark offset in window for initialized bytes -- bytes above
   * this are set to zero in order to avoid memory check warnings when
   * longest match routines access bytes past the input.  This is then
   * updated to the new high water mark.
   */
}


function deflateResetKeep(strm) {
  var s;

  if (!strm || !strm.state) {
    return err(strm, Z_STREAM_ERROR);
  }

  strm.total_in = strm.total_out = 0;
  strm.data_type = Z_UNKNOWN;

  s = strm.state;
  s.pending = 0;
  s.pending_out = 0;

  if (s.wrap < 0) {
    s.wrap = -s.wrap;
    /* was made negative by deflate(..., Z_FINISH); */
  }
  s.status = (s.wrap ? INIT_STATE : BUSY_STATE);
  strm.adler = (s.wrap === 2) ?
    0  // crc32(0, Z_NULL, 0)
  :
    1; // adler32(0, Z_NULL, 0)
  s.last_flush = Z_NO_FLUSH;
  trees._tr_init(s);
  return Z_OK;
}


function deflateReset(strm) {
  var ret = deflateResetKeep(strm);
  if (ret === Z_OK) {
    lm_init(strm.state);
  }
  return ret;
}


function deflateSetHeader(strm, head) {
  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  if (strm.state.wrap !== 2) { return Z_STREAM_ERROR; }
  strm.state.gzhead = head;
  return Z_OK;
}


function deflateInit2(strm, level, method, windowBits, memLevel, strategy) {
  if (!strm) { // === Z_NULL
    return Z_STREAM_ERROR;
  }
  var wrap = 1;

  if (level === Z_DEFAULT_COMPRESSION) {
    level = 6;
  }

  if (windowBits < 0) { /* suppress zlib wrapper */
    wrap = 0;
    windowBits = -windowBits;
  }

  else if (windowBits > 15) {
    wrap = 2;           /* write gzip wrapper instead */
    windowBits -= 16;
  }


  if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED ||
    windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||
    strategy < 0 || strategy > Z_FIXED) {
    return err(strm, Z_STREAM_ERROR);
  }


  if (windowBits === 8) {
    windowBits = 9;
  }
  /* until 256-byte window bug fixed */

  var s = new DeflateState();

  strm.state = s;
  s.strm = strm;

  s.wrap = wrap;
  s.gzhead = null;
  s.w_bits = windowBits;
  s.w_size = 1 << s.w_bits;
  s.w_mask = s.w_size - 1;

  s.hash_bits = memLevel + 7;
  s.hash_size = 1 << s.hash_bits;
  s.hash_mask = s.hash_size - 1;
  s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH);

  s.window = new utils.Buf8(s.w_size * 2);
  s.head = new utils.Buf16(s.hash_size);
  s.prev = new utils.Buf16(s.w_size);

  // Don't need mem init magic for JS.
  //s.high_water = 0;  /* nothing written to s->window yet */

  s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */

  s.pending_buf_size = s.lit_bufsize * 4;

  //overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2);
  //s->pending_buf = (uchf *) overlay;
  s.pending_buf = new utils.Buf8(s.pending_buf_size);

  // It is offset from `s.pending_buf` (size is `s.lit_bufsize * 2`)
  //s->d_buf = overlay + s->lit_bufsize/sizeof(ush);
  s.d_buf = 1 * s.lit_bufsize;

  //s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize;
  s.l_buf = (1 + 2) * s.lit_bufsize;

  s.level = level;
  s.strategy = strategy;
  s.method = method;

  return deflateReset(strm);
}

function deflateInit(strm, level) {
  return deflateInit2(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY);
}


function deflate(strm, flush) {
  var old_flush, s;
  var beg, val; // for gzip header write only

  if (!strm || !strm.state ||
    flush > Z_BLOCK || flush < 0) {
    return strm ? err(strm, Z_STREAM_ERROR) : Z_STREAM_ERROR;
  }

  s = strm.state;

  if (!strm.output ||
      (!strm.input && strm.avail_in !== 0) ||
      (s.status === FINISH_STATE && flush !== Z_FINISH)) {
    return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR : Z_STREAM_ERROR);
  }

  s.strm = strm; /* just in case */
  old_flush = s.last_flush;
  s.last_flush = flush;

  /* Write the header */
  if (s.status === INIT_STATE) {

    if (s.wrap === 2) { // GZIP header
      strm.adler = 0;  //crc32(0L, Z_NULL, 0);
      put_byte(s, 31);
      put_byte(s, 139);
      put_byte(s, 8);
      if (!s.gzhead) { // s->gzhead == Z_NULL
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, s.level === 9 ? 2 :
                    (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
                     4 : 0));
        put_byte(s, OS_CODE);
        s.status = BUSY_STATE;
      }
      else {
        put_byte(s, (s.gzhead.text ? 1 : 0) +
                    (s.gzhead.hcrc ? 2 : 0) +
                    (!s.gzhead.extra ? 0 : 4) +
                    (!s.gzhead.name ? 0 : 8) +
                    (!s.gzhead.comment ? 0 : 16)
        );
        put_byte(s, s.gzhead.time & 0xff);
        put_byte(s, (s.gzhead.time >> 8) & 0xff);
        put_byte(s, (s.gzhead.time >> 16) & 0xff);
        put_byte(s, (s.gzhead.time >> 24) & 0xff);
        put_byte(s, s.level === 9 ? 2 :
                    (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
                     4 : 0));
        put_byte(s, s.gzhead.os & 0xff);
        if (s.gzhead.extra && s.gzhead.extra.length) {
          put_byte(s, s.gzhead.extra.length & 0xff);
          put_byte(s, (s.gzhead.extra.length >> 8) & 0xff);
        }
        if (s.gzhead.hcrc) {
          strm.adler = crc32(strm.adler, s.pending_buf, s.pending, 0);
        }
        s.gzindex = 0;
        s.status = EXTRA_STATE;
      }
    }
    else // DEFLATE header
    {
      var header = (Z_DEFLATED + ((s.w_bits - 8) << 4)) << 8;
      var level_flags = -1;

      if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) {
        level_flags = 0;
      } else if (s.level < 6) {
        level_flags = 1;
      } else if (s.level === 6) {
        level_flags = 2;
      } else {
        level_flags = 3;
      }
      header |= (level_flags << 6);
      if (s.strstart !== 0) { header |= PRESET_DICT; }
      header += 31 - (header % 31);

      s.status = BUSY_STATE;
      putShortMSB(s, header);

      /* Save the adler32 of the preset dictionary: */
      if (s.strstart !== 0) {
        putShortMSB(s, strm.adler >>> 16);
        putShortMSB(s, strm.adler & 0xffff);
      }
      strm.adler = 1; // adler32(0L, Z_NULL, 0);
    }
  }

//#ifdef GZIP
  if (s.status === EXTRA_STATE) {
    if (s.gzhead.extra/* != Z_NULL*/) {
      beg = s.pending;  /* start of bytes to update crc */

      while (s.gzindex < (s.gzhead.extra.length & 0xffff)) {
        if (s.pending === s.pending_buf_size) {
          if (s.gzhead.hcrc && s.pending > beg) {
            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
          }
          flush_pending(strm);
          beg = s.pending;
          if (s.pending === s.pending_buf_size) {
            break;
          }
        }
        put_byte(s, s.gzhead.extra[s.gzindex] & 0xff);
        s.gzindex++;
      }
      if (s.gzhead.hcrc && s.pending > beg) {
        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
      }
      if (s.gzindex === s.gzhead.extra.length) {
        s.gzindex = 0;
        s.status = NAME_STATE;
      }
    }
    else {
      s.status = NAME_STATE;
    }
  }
  if (s.status === NAME_STATE) {
    if (s.gzhead.name/* != Z_NULL*/) {
      beg = s.pending;  /* start of bytes to update crc */
      //int val;

      do {
        if (s.pending === s.pending_buf_size) {
          if (s.gzhead.hcrc && s.pending > beg) {
            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
          }
          flush_pending(strm);
          beg = s.pending;
          if (s.pending === s.pending_buf_size) {
            val = 1;
            break;
          }
        }
        // JS specific: little magic to add zero terminator to end of string
        if (s.gzindex < s.gzhead.name.length) {
          val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff;
        } else {
          val = 0;
        }
        put_byte(s, val);
      } while (val !== 0);

      if (s.gzhead.hcrc && s.pending > beg) {
        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
      }
      if (val === 0) {
        s.gzindex = 0;
        s.status = COMMENT_STATE;
      }
    }
    else {
      s.status = COMMENT_STATE;
    }
  }
  if (s.status === COMMENT_STATE) {
    if (s.gzhead.comment/* != Z_NULL*/) {
      beg = s.pending;  /* start of bytes to update crc */
      //int val;

      do {
        if (s.pending === s.pending_buf_size) {
          if (s.gzhead.hcrc && s.pending > beg) {
            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
          }
          flush_pending(strm);
          beg = s.pending;
          if (s.pending === s.pending_buf_size) {
            val = 1;
            break;
          }
        }
        // JS specific: little magic to add zero terminator to end of string
        if (s.gzindex < s.gzhead.comment.length) {
          val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff;
        } else {
          val = 0;
        }
        put_byte(s, val);
      } while (val !== 0);

      if (s.gzhead.hcrc && s.pending > beg) {
        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
      }
      if (val === 0) {
        s.status = HCRC_STATE;
      }
    }
    else {
      s.status = HCRC_STATE;
    }
  }
  if (s.status === HCRC_STATE) {
    if (s.gzhead.hcrc) {
      if (s.pending + 2 > s.pending_buf_size) {
        flush_pending(strm);
      }
      if (s.pending + 2 <= s.pending_buf_size) {
        put_byte(s, strm.adler & 0xff);
        put_byte(s, (strm.adler >> 8) & 0xff);
        strm.adler = 0; //crc32(0L, Z_NULL, 0);
        s.status = BUSY_STATE;
      }
    }
    else {
      s.status = BUSY_STATE;
    }
  }
//#endif

  /* Flush as much pending output as possible */
  if (s.pending !== 0) {
    flush_pending(strm);
    if (strm.avail_out === 0) {
      /* Since avail_out is 0, deflate will be called again with
       * more output space, but possibly with both pending and
       * avail_in equal to zero. There won't be anything to do,
       * but this is not an error situation so make sure we
       * return OK instead of BUF_ERROR at next call of deflate:
       */
      s.last_flush = -1;
      return Z_OK;
    }

    /* Make sure there is something to do and avoid duplicate consecutive
     * flushes. For repeated and useless calls with Z_FINISH, we keep
     * returning Z_STREAM_END instead of Z_BUF_ERROR.
     */
  } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) &&
    flush !== Z_FINISH) {
    return err(strm, Z_BUF_ERROR);
  }

  /* User must not provide more input after the first FINISH: */
  if (s.status === FINISH_STATE && strm.avail_in !== 0) {
    return err(strm, Z_BUF_ERROR);
  }

  /* Start a new block or continue the current one.
   */
  if (strm.avail_in !== 0 || s.lookahead !== 0 ||
    (flush !== Z_NO_FLUSH && s.status !== FINISH_STATE)) {
    var bstate = (s.strategy === Z_HUFFMAN_ONLY) ? deflate_huff(s, flush) :
      (s.strategy === Z_RLE ? deflate_rle(s, flush) :
        configuration_table[s.level].func(s, flush));

    if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) {
      s.status = FINISH_STATE;
    }
    if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) {
      if (strm.avail_out === 0) {
        s.last_flush = -1;
        /* avoid BUF_ERROR next call, see above */
      }
      return Z_OK;
      /* If flush != Z_NO_FLUSH && avail_out == 0, the next call
       * of deflate should use the same flush parameter to make sure
       * that the flush is complete. So we don't have to output an
       * empty block here, this will be done at next call. This also
       * ensures that for a very small output buffer, we emit at most
       * one empty block.
       */
    }
    if (bstate === BS_BLOCK_DONE) {
      if (flush === Z_PARTIAL_FLUSH) {
        trees._tr_align(s);
      }
      else if (flush !== Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */

        trees._tr_stored_block(s, 0, 0, false);
        /* For a full flush, this empty block will be recognized
         * as a special marker by inflate_sync().
         */
        if (flush === Z_FULL_FLUSH) {
          /*** CLEAR_HASH(s); ***/             /* forget history */
          zero(s.head); // Fill with NIL (= 0);

          if (s.lookahead === 0) {
            s.strstart = 0;
            s.block_start = 0;
            s.insert = 0;
          }
        }
      }
      flush_pending(strm);
      if (strm.avail_out === 0) {
        s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */
        return Z_OK;
      }
    }
  }
  //Assert(strm->avail_out > 0, "bug2");
  //if (strm.avail_out <= 0) { throw new Error("bug2");}

  if (flush !== Z_FINISH) { return Z_OK; }
  if (s.wrap <= 0) { return Z_STREAM_END; }

  /* Write the trailer */
  if (s.wrap === 2) {
    put_byte(s, strm.adler & 0xff);
    put_byte(s, (strm.adler >> 8) & 0xff);
    put_byte(s, (strm.adler >> 16) & 0xff);
    put_byte(s, (strm.adler >> 24) & 0xff);
    put_byte(s, strm.total_in & 0xff);
    put_byte(s, (strm.total_in >> 8) & 0xff);
    put_byte(s, (strm.total_in >> 16) & 0xff);
    put_byte(s, (strm.total_in >> 24) & 0xff);
  }
  else
  {
    putShortMSB(s, strm.adler >>> 16);
    putShortMSB(s, strm.adler & 0xffff);
  }

  flush_pending(strm);
  /* If avail_out is zero, the application will call deflate again
   * to flush the rest.
   */
  if (s.wrap > 0) { s.wrap = -s.wrap; }
  /* write the trailer only once! */
  return s.pending !== 0 ? Z_OK : Z_STREAM_END;
}

function deflateEnd(strm) {
  var status;

  if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {
    return Z_STREAM_ERROR;
  }

  status = strm.state.status;
  if (status !== INIT_STATE &&
    status !== EXTRA_STATE &&
    status !== NAME_STATE &&
    status !== COMMENT_STATE &&
    status !== HCRC_STATE &&
    status !== BUSY_STATE &&
    status !== FINISH_STATE
  ) {
    return err(strm, Z_STREAM_ERROR);
  }

  strm.state = null;

  return status === BUSY_STATE ? err(strm, Z_DATA_ERROR) : Z_OK;
}


/* =========================================================================
 * Initializes the compression dictionary from the given byte
 * sequence without producing any compressed output.
 */
function deflateSetDictionary(strm, dictionary) {
  var dictLength = dictionary.length;

  var s;
  var str, n;
  var wrap;
  var avail;
  var next;
  var input;
  var tmpDict;

  if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {
    return Z_STREAM_ERROR;
  }

  s = strm.state;
  wrap = s.wrap;

  if (wrap === 2 || (wrap === 1 && s.status !== INIT_STATE) || s.lookahead) {
    return Z_STREAM_ERROR;
  }

  /* when using zlib wrappers, compute Adler-32 for provided dictionary */
  if (wrap === 1) {
    /* adler32(strm->adler, dictionary, dictLength); */
    strm.adler = adler32(strm.adler, dictionary, dictLength, 0);
  }

  s.wrap = 0;   /* avoid computing Adler-32 in read_buf */

  /* if dictionary would fill window, just replace the history */
  if (dictLength >= s.w_size) {
    if (wrap === 0) {            /* already empty otherwise */
      /*** CLEAR_HASH(s); ***/
      zero(s.head); // Fill with NIL (= 0);
      s.strstart = 0;
      s.block_start = 0;
      s.insert = 0;
    }
    /* use the tail */
    // dictionary = dictionary.slice(dictLength - s.w_size);
    tmpDict = new utils.Buf8(s.w_size);
    utils.arraySet(tmpDict, dictionary, dictLength - s.w_size, s.w_size, 0);
    dictionary = tmpDict;
    dictLength = s.w_size;
  }
  /* insert dictionary into window and hash */
  avail = strm.avail_in;
  next = strm.next_in;
  input = strm.input;
  strm.avail_in = dictLength;
  strm.next_in = 0;
  strm.input = dictionary;
  fill_window(s);
  while (s.lookahead >= MIN_MATCH) {
    str = s.strstart;
    n = s.lookahead - (MIN_MATCH - 1);
    do {
      /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask;

      s.prev[str & s.w_mask] = s.head[s.ins_h];

      s.head[s.ins_h] = str;
      str++;
    } while (--n);
    s.strstart = str;
    s.lookahead = MIN_MATCH - 1;
    fill_window(s);
  }
  s.strstart += s.lookahead;
  s.block_start = s.strstart;
  s.insert = s.lookahead;
  s.lookahead = 0;
  s.match_length = s.prev_length = MIN_MATCH - 1;
  s.match_available = 0;
  strm.next_in = next;
  strm.input = input;
  strm.avail_in = avail;
  s.wrap = wrap;
  return Z_OK;
}


exports.deflateInit = deflateInit;
exports.deflateInit2 = deflateInit2;
exports.deflateReset = deflateReset;
exports.deflateResetKeep = deflateResetKeep;
exports.deflateSetHeader = deflateSetHeader;
exports.deflate = deflate;
exports.deflateEnd = deflateEnd;
exports.deflateSetDictionary = deflateSetDictionary;
exports.deflateInfo = 'pako deflate (from Nodeca project)';

/* Not implemented
exports.deflateBound = deflateBound;
exports.deflateCopy = deflateCopy;
exports.deflateParams = deflateParams;
exports.deflatePending = deflatePending;
exports.deflatePrime = deflatePrime;
exports.deflateTune = deflateTune;
*/

},{"../utils/common":292,"./adler32":294,"./crc32":296,"./messages":302,"./trees":303}],298:[function(require,module,exports){
'use strict';

// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

function GZheader() {
  /* true if compressed data believed to be text */
  this.text       = 0;
  /* modification time */
  this.time       = 0;
  /* extra flags (not used when writing a gzip file) */
  this.xflags     = 0;
  /* operating system */
  this.os         = 0;
  /* pointer to extra field or Z_NULL if none */
  this.extra      = null;
  /* extra field length (valid if extra != Z_NULL) */
  this.extra_len  = 0; // Actually, we don't need it in JS,
                       // but leave for few code modifications

  //
  // Setup limits is not necessary because in js we should not preallocate memory
  // for inflate use constant limit in 65536 bytes
  //

  /* space at extra (only when reading header) */
  // this.extra_max  = 0;
  /* pointer to zero-terminated file name or Z_NULL */
  this.name       = '';
  /* space at name (only when reading header) */
  // this.name_max   = 0;
  /* pointer to zero-terminated comment or Z_NULL */
  this.comment    = '';
  /* space at comment (only when reading header) */
  // this.comm_max   = 0;
  /* true if there was or will be a header crc */
  this.hcrc       = 0;
  /* true when done reading gzip header (not used when writing a gzip file) */
  this.done       = false;
}

module.exports = GZheader;

},{}],299:[function(require,module,exports){
'use strict';

// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

// See state defs from inflate.js
var BAD = 30;       /* got a data error -- remain here until reset */
var TYPE = 12;      /* i: waiting for type bits, including last-flag bit */

/*
   Decode literal, length, and distance codes and write out the resulting
   literal and match bytes until either not enough input or output is
   available, an end-of-block is encountered, or a data error is encountered.
   When large enough input and output buffers are supplied to inflate(), for
   example, a 16K input buffer and a 64K output buffer, more than 95% of the
   inflate execution time is spent in this routine.

   Entry assumptions:

        state.mode === LEN
        strm.avail_in >= 6
        strm.avail_out >= 258
        start >= strm.avail_out
        state.bits < 8

   On return, state.mode is one of:

        LEN -- ran out of enough output space or enough available input
        TYPE -- reached end of block code, inflate() to interpret next block
        BAD -- error in block data

   Notes:

    - The maximum input bits used by a length/distance pair is 15 bits for the
      length code, 5 bits for the length extra, 15 bits for the distance code,
      and 13 bits for the distance extra.  This totals 48 bits, or six bytes.
      Therefore if strm.avail_in >= 6, then there is enough input to avoid
      checking for available input while decoding.

    - The maximum bytes that a single length/distance pair can output is 258
      bytes, which is the maximum length that can be coded.  inflate_fast()
      requires strm.avail_out >= 258 for each loop to avoid checking for
      output space.
 */
module.exports = function inflate_fast(strm, start) {
  var state;
  var _in;                    /* local strm.input */
  var last;                   /* have enough input while in < last */
  var _out;                   /* local strm.output */
  var beg;                    /* inflate()'s initial strm.output */
  var end;                    /* while out < end, enough space available */
//#ifdef INFLATE_STRICT
  var dmax;                   /* maximum distance from zlib header */
//#endif
  var wsize;                  /* window size or zero if not using window */
  var whave;                  /* valid bytes in the window */
  var wnext;                  /* window write index */
  // Use `s_window` instead `window`, avoid conflict with instrumentation tools
  var s_window;               /* allocated sliding window, if wsize != 0 */
  var hold;                   /* local strm.hold */
  var bits;                   /* local strm.bits */
  var lcode;                  /* local strm.lencode */
  var dcode;                  /* local strm.distcode */
  var lmask;                  /* mask for first level of length codes */
  var dmask;                  /* mask for first level of distance codes */
  var here;                   /* retrieved table entry */
  var op;                     /* code bits, operation, extra bits, or */
                              /*  window position, window bytes to copy */
  var len;                    /* match length, unused bytes */
  var dist;                   /* match distance */
  var from;                   /* where to copy match from */
  var from_source;


  var input, output; // JS specific, because we have no pointers

  /* copy state to local variables */
  state = strm.state;
  //here = state.here;
  _in = strm.next_in;
  input = strm.input;
  last = _in + (strm.avail_in - 5);
  _out = strm.next_out;
  output = strm.output;
  beg = _out - (start - strm.avail_out);
  end = _out + (strm.avail_out - 257);
//#ifdef INFLATE_STRICT
  dmax = state.dmax;
//#endif
  wsize = state.wsize;
  whave = state.whave;
  wnext = state.wnext;
  s_window = state.window;
  hold = state.hold;
  bits = state.bits;
  lcode = state.lencode;
  dcode = state.distcode;
  lmask = (1 << state.lenbits) - 1;
  dmask = (1 << state.distbits) - 1;


  /* decode literals and length/distances until end-of-block or not enough
     input data or output space */

  top:
  do {
    if (bits < 15) {
      hold += input[_in++] << bits;
      bits += 8;
      hold += input[_in++] << bits;
      bits += 8;
    }

    here = lcode[hold & lmask];

    dolen:
    for (;;) { // Goto emulation
      op = here >>> 24/*here.bits*/;
      hold >>>= op;
      bits -= op;
      op = (here >>> 16) & 0xff/*here.op*/;
      if (op === 0) {                          /* literal */
        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
        //        "inflate:         literal '%c'\n" :
        //        "inflate:         literal 0x%02x\n", here.val));
        output[_out++] = here & 0xffff/*here.val*/;
      }
      else if (op & 16) {                     /* length base */
        len = here & 0xffff/*here.val*/;
        op &= 15;                           /* number of extra bits */
        if (op) {
          if (bits < op) {
            hold += input[_in++] << bits;
            bits += 8;
          }
          len += hold & ((1 << op) - 1);
          hold >>>= op;
          bits -= op;
        }
        //Tracevv((stderr, "inflate:         length %u\n", len));
        if (bits < 15) {
          hold += input[_in++] << bits;
          bits += 8;
          hold += input[_in++] << bits;
          bits += 8;
        }
        here = dcode[hold & dmask];

        dodist:
        for (;;) { // goto emulation
          op = here >>> 24/*here.bits*/;
          hold >>>= op;
          bits -= op;
          op = (here >>> 16) & 0xff/*here.op*/;

          if (op & 16) {                      /* distance base */
            dist = here & 0xffff/*here.val*/;
            op &= 15;                       /* number of extra bits */
            if (bits < op) {
              hold += input[_in++] << bits;
              bits += 8;
              if (bits < op) {
                hold += input[_in++] << bits;
                bits += 8;
              }
            }
            dist += hold & ((1 << op) - 1);
//#ifdef INFLATE_STRICT
            if (dist > dmax) {
              strm.msg = 'invalid distance too far back';
              state.mode = BAD;
              break top;
            }
//#endif
            hold >>>= op;
            bits -= op;
            //Tracevv((stderr, "inflate:         distance %u\n", dist));
            op = _out - beg;                /* max distance in output */
            if (dist > op) {                /* see if copy from window */
              op = dist - op;               /* distance back in window */
              if (op > whave) {
                if (state.sane) {
                  strm.msg = 'invalid distance too far back';
                  state.mode = BAD;
                  break top;
                }

// (!) This block is disabled in zlib defaults,
// don't enable it for binary compatibility
//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
//                if (len <= op - whave) {
//                  do {
//                    output[_out++] = 0;
//                  } while (--len);
//                  continue top;
//                }
//                len -= op - whave;
//                do {
//                  output[_out++] = 0;
//                } while (--op > whave);
//                if (op === 0) {
//                  from = _out - dist;
//                  do {
//                    output[_out++] = output[from++];
//                  } while (--len);
//                  continue top;
//                }
//#endif
              }
              from = 0; // window index
              from_source = s_window;
              if (wnext === 0) {           /* very common case */
                from += wsize - op;
                if (op < len) {         /* some from window */
                  len -= op;
                  do {
                    output[_out++] = s_window[from++];
                  } while (--op);
                  from = _out - dist;  /* rest from output */
                  from_source = output;
                }
              }
              else if (wnext < op) {      /* wrap around window */
                from += wsize + wnext - op;
                op -= wnext;
                if (op < len) {         /* some from end of window */
                  len -= op;
                  do {
                    output[_out++] = s_window[from++];
                  } while (--op);
                  from = 0;
                  if (wnext < len) {  /* some from start of window */
                    op = wnext;
                    len -= op;
                    do {
                      output[_out++] = s_window[from++];
                    } while (--op);
                    from = _out - dist;      /* rest from output */
                    from_source = output;
                  }
                }
              }
              else {                      /* contiguous in window */
                from += wnext - op;
                if (op < len) {         /* some from window */
                  len -= op;
                  do {
                    output[_out++] = s_window[from++];
                  } while (--op);
                  from = _out - dist;  /* rest from output */
                  from_source = output;
                }
              }
              while (len > 2) {
                output[_out++] = from_source[from++];
                output[_out++] = from_source[from++];
                output[_out++] = from_source[from++];
                len -= 3;
              }
              if (len) {
                output[_out++] = from_source[from++];
                if (len > 1) {
                  output[_out++] = from_source[from++];
                }
              }
            }
            else {
              from = _out - dist;          /* copy direct from output */
              do {                        /* minimum length is three */
                output[_out++] = output[from++];
                output[_out++] = output[from++];
                output[_out++] = output[from++];
                len -= 3;
              } while (len > 2);
              if (len) {
                output[_out++] = output[from++];
                if (len > 1) {
                  output[_out++] = output[from++];
                }
              }
            }
          }
          else if ((op & 64) === 0) {          /* 2nd level distance code */
            here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
            continue dodist;
          }
          else {
            strm.msg = 'invalid distance code';
            state.mode = BAD;
            break top;
          }

          break; // need to emulate goto via "continue"
        }
      }
      else if ((op & 64) === 0) {              /* 2nd level length code */
        here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
        continue dolen;
      }
      else if (op & 32) {                     /* end-of-block */
        //Tracevv((stderr, "inflate:         end of block\n"));
        state.mode = TYPE;
        break top;
      }
      else {
        strm.msg = 'invalid literal/length code';
        state.mode = BAD;
        break top;
      }

      break; // need to emulate goto via "continue"
    }
  } while (_in < last && _out < end);

  /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
  len = bits >> 3;
  _in -= len;
  bits -= len << 3;
  hold &= (1 << bits) - 1;

  /* update state and return */
  strm.next_in = _in;
  strm.next_out = _out;
  strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last));
  strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end));
  state.hold = hold;
  state.bits = bits;
  return;
};

},{}],300:[function(require,module,exports){
'use strict';

// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

var utils         = require('../utils/common');
var adler32       = require('./adler32');
var crc32         = require('./crc32');
var inflate_fast  = require('./inffast');
var inflate_table = require('./inftrees');

var CODES = 0;
var LENS = 1;
var DISTS = 2;

/* Public constants ==========================================================*/
/* ===========================================================================*/


/* Allowed flush values; see deflate() and inflate() below for details */
//var Z_NO_FLUSH      = 0;
//var Z_PARTIAL_FLUSH = 1;
//var Z_SYNC_FLUSH    = 2;
//var Z_FULL_FLUSH    = 3;
var Z_FINISH        = 4;
var Z_BLOCK         = 5;
var Z_TREES         = 6;


/* Return codes for the compression/decompression functions. Negative values
 * are errors, positive values are used for special but normal events.
 */
var Z_OK            = 0;
var Z_STREAM_END    = 1;
var Z_NEED_DICT     = 2;
//var Z_ERRNO         = -1;
var Z_STREAM_ERROR  = -2;
var Z_DATA_ERROR    = -3;
var Z_MEM_ERROR     = -4;
var Z_BUF_ERROR     = -5;
//var Z_VERSION_ERROR = -6;

/* The deflate compression method */
var Z_DEFLATED  = 8;


/* STATES ====================================================================*/
/* ===========================================================================*/


var    HEAD = 1;       /* i: waiting for magic header */
var    FLAGS = 2;      /* i: waiting for method and flags (gzip) */
var    TIME = 3;       /* i: waiting for modification time (gzip) */
var    OS = 4;         /* i: waiting for extra flags and operating system (gzip) */
var    EXLEN = 5;      /* i: waiting for extra length (gzip) */
var    EXTRA = 6;      /* i: waiting for extra bytes (gzip) */
var    NAME = 7;       /* i: waiting for end of file name (gzip) */
var    COMMENT = 8;    /* i: waiting for end of comment (gzip) */
var    HCRC = 9;       /* i: waiting for header crc (gzip) */
var    DICTID = 10;    /* i: waiting for dictionary check value */
var    DICT = 11;      /* waiting for inflateSetDictionary() call */
var        TYPE = 12;      /* i: waiting for type bits, including last-flag bit */
var        TYPEDO = 13;    /* i: same, but skip check to exit inflate on new block */
var        STORED = 14;    /* i: waiting for stored size (length and complement) */
var        COPY_ = 15;     /* i/o: same as COPY below, but only first time in */
var        COPY = 16;      /* i/o: waiting for input or output to copy stored block */
var        TABLE = 17;     /* i: waiting for dynamic block table lengths */
var        LENLENS = 18;   /* i: waiting for code length code lengths */
var        CODELENS = 19;  /* i: waiting for length/lit and distance code lengths */
var            LEN_ = 20;      /* i: same as LEN below, but only first time in */
var            LEN = 21;       /* i: waiting for length/lit/eob code */
var            LENEXT = 22;    /* i: waiting for length extra bits */
var            DIST = 23;      /* i: waiting for distance code */
var            DISTEXT = 24;   /* i: waiting for distance extra bits */
var            MATCH = 25;     /* o: waiting for output space to copy string */
var            LIT = 26;       /* o: waiting for output space to write literal */
var    CHECK = 27;     /* i: waiting for 32-bit check value */
var    LENGTH = 28;    /* i: waiting for 32-bit length (gzip) */
var    DONE = 29;      /* finished check, done -- remain here until reset */
var    BAD = 30;       /* got a data error -- remain here until reset */
var    MEM = 31;       /* got an inflate() memory error -- remain here until reset */
var    SYNC = 32;      /* looking for synchronization bytes to restart inflate() */

/* ===========================================================================*/



var ENOUGH_LENS = 852;
var ENOUGH_DISTS = 592;
//var ENOUGH =  (ENOUGH_LENS+ENOUGH_DISTS);

var MAX_WBITS = 15;
/* 32K LZ77 window */
var DEF_WBITS = MAX_WBITS;


function zswap32(q) {
  return  (((q >>> 24) & 0xff) +
          ((q >>> 8) & 0xff00) +
          ((q & 0xff00) << 8) +
          ((q & 0xff) << 24));
}


function InflateState() {
  this.mode = 0;             /* current inflate mode */
  this.last = false;          /* true if processing last block */
  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */
  this.havedict = false;      /* true if dictionary provided */
  this.flags = 0;             /* gzip header method and flags (0 if zlib) */
  this.dmax = 0;              /* zlib header max distance (INFLATE_STRICT) */
  this.check = 0;             /* protected copy of check value */
  this.total = 0;             /* protected copy of output count */
  // TODO: may be {}
  this.head = null;           /* where to save gzip header information */

  /* sliding window */
  this.wbits = 0;             /* log base 2 of requested window size */
  this.wsize = 0;             /* window size or zero if not using window */
  this.whave = 0;             /* valid bytes in the window */
  this.wnext = 0;             /* window write index */
  this.window = null;         /* allocated sliding window, if needed */

  /* bit accumulator */
  this.hold = 0;              /* input bit accumulator */
  this.bits = 0;              /* number of bits in "in" */

  /* for string and stored block copying */
  this.length = 0;            /* literal or length of data to copy */
  this.offset = 0;            /* distance back to copy string from */

  /* for table and code decoding */
  this.extra = 0;             /* extra bits needed */

  /* fixed and dynamic code tables */
  this.lencode = null;          /* starting table for length/literal codes */
  this.distcode = null;         /* starting table for distance codes */
  this.lenbits = 0;           /* index bits for lencode */
  this.distbits = 0;          /* index bits for distcode */

  /* dynamic table building */
  this.ncode = 0;             /* number of code length code lengths */
  this.nlen = 0;              /* number of length code lengths */
  this.ndist = 0;             /* number of distance code lengths */
  this.have = 0;              /* number of code lengths in lens[] */
  this.next = null;              /* next available space in codes[] */

  this.lens = new utils.Buf16(320); /* temporary storage for code lengths */
  this.work = new utils.Buf16(288); /* work area for code table building */

  /*
   because we don't have pointers in js, we use lencode and distcode directly
   as buffers so we don't need codes
  */
  //this.codes = new utils.Buf32(ENOUGH);       /* space for code tables */
  this.lendyn = null;              /* dynamic table for length/literal codes (JS specific) */
  this.distdyn = null;             /* dynamic table for distance codes (JS specific) */
  this.sane = 0;                   /* if false, allow invalid distance too far */
  this.back = 0;                   /* bits back of last unprocessed length/lit */
  this.was = 0;                    /* initial length of match */
}

function inflateResetKeep(strm) {
  var state;

  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;
  strm.total_in = strm.total_out = state.total = 0;
  strm.msg = ''; /*Z_NULL*/
  if (state.wrap) {       /* to support ill-conceived Java test suite */
    strm.adler = state.wrap & 1;
  }
  state.mode = HEAD;
  state.last = 0;
  state.havedict = 0;
  state.dmax = 32768;
  state.head = null/*Z_NULL*/;
  state.hold = 0;
  state.bits = 0;
  //state.lencode = state.distcode = state.next = state.codes;
  state.lencode = state.lendyn = new utils.Buf32(ENOUGH_LENS);
  state.distcode = state.distdyn = new utils.Buf32(ENOUGH_DISTS);

  state.sane = 1;
  state.back = -1;
  //Tracev((stderr, "inflate: reset\n"));
  return Z_OK;
}

function inflateReset(strm) {
  var state;

  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;
  state.wsize = 0;
  state.whave = 0;
  state.wnext = 0;
  return inflateResetKeep(strm);

}

function inflateReset2(strm, windowBits) {
  var wrap;
  var state;

  /* get the state */
  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;

  /* extract wrap request from windowBits parameter */
  if (windowBits < 0) {
    wrap = 0;
    windowBits = -windowBits;
  }
  else {
    wrap = (windowBits >> 4) + 1;
    if (windowBits < 48) {
      windowBits &= 15;
    }
  }

  /* set number of window bits, free window if different */
  if (windowBits && (windowBits < 8 || windowBits > 15)) {
    return Z_STREAM_ERROR;
  }
  if (state.window !== null && state.wbits !== windowBits) {
    state.window = null;
  }

  /* update state and reset the rest of it */
  state.wrap = wrap;
  state.wbits = windowBits;
  return inflateReset(strm);
}

function inflateInit2(strm, windowBits) {
  var ret;
  var state;

  if (!strm) { return Z_STREAM_ERROR; }
  //strm.msg = Z_NULL;                 /* in case we return an error */

  state = new InflateState();

  //if (state === Z_NULL) return Z_MEM_ERROR;
  //Tracev((stderr, "inflate: allocated\n"));
  strm.state = state;
  state.window = null/*Z_NULL*/;
  ret = inflateReset2(strm, windowBits);
  if (ret !== Z_OK) {
    strm.state = null/*Z_NULL*/;
  }
  return ret;
}

function inflateInit(strm) {
  return inflateInit2(strm, DEF_WBITS);
}


/*
 Return state with length and distance decoding tables and index sizes set to
 fixed code decoding.  Normally this returns fixed tables from inffixed.h.
 If BUILDFIXED is defined, then instead this routine builds the tables the
 first time it's called, and returns those tables the first time and
 thereafter.  This reduces the size of the code by about 2K bytes, in
 exchange for a little execution time.  However, BUILDFIXED should not be
 used for threaded applications, since the rewriting of the tables and virgin
 may not be thread-safe.
 */
var virgin = true;

var lenfix, distfix; // We have no pointers in JS, so keep tables separate

function fixedtables(state) {
  /* build fixed huffman tables if first call (may not be thread safe) */
  if (virgin) {
    var sym;

    lenfix = new utils.Buf32(512);
    distfix = new utils.Buf32(32);

    /* literal/length table */
    sym = 0;
    while (sym < 144) { state.lens[sym++] = 8; }
    while (sym < 256) { state.lens[sym++] = 9; }
    while (sym < 280) { state.lens[sym++] = 7; }
    while (sym < 288) { state.lens[sym++] = 8; }

    inflate_table(LENS,  state.lens, 0, 288, lenfix,   0, state.work, { bits: 9 });

    /* distance table */
    sym = 0;
    while (sym < 32) { state.lens[sym++] = 5; }

    inflate_table(DISTS, state.lens, 0, 32,   distfix, 0, state.work, { bits: 5 });

    /* do this just once */
    virgin = false;
  }

  state.lencode = lenfix;
  state.lenbits = 9;
  state.distcode = distfix;
  state.distbits = 5;
}


/*
 Update the window with the last wsize (normally 32K) bytes written before
 returning.  If window does not exist yet, create it.  This is only called
 when a window is already in use, or when output has been written during this
 inflate call, but the end of the deflate stream has not been reached yet.
 It is also called to create a window for dictionary data when a dictionary
 is loaded.

 Providing output buffers larger than 32K to inflate() should provide a speed
 advantage, since only the last 32K of output is copied to the sliding window
 upon return from inflate(), and since all distances after the first 32K of
 output will fall in the output data, making match copies simpler and faster.
 The advantage may be dependent on the size of the processor's data caches.
 */
function updatewindow(strm, src, end, copy) {
  var dist;
  var state = strm.state;

  /* if it hasn't been done already, allocate space for the window */
  if (state.window === null) {
    state.wsize = 1 << state.wbits;
    state.wnext = 0;
    state.whave = 0;

    state.window = new utils.Buf8(state.wsize);
  }

  /* copy state->wsize or less output bytes into the circular window */
  if (copy >= state.wsize) {
    utils.arraySet(state.window, src, end - state.wsize, state.wsize, 0);
    state.wnext = 0;
    state.whave = state.wsize;
  }
  else {
    dist = state.wsize - state.wnext;
    if (dist > copy) {
      dist = copy;
    }
    //zmemcpy(state->window + state->wnext, end - copy, dist);
    utils.arraySet(state.window, src, end - copy, dist, state.wnext);
    copy -= dist;
    if (copy) {
      //zmemcpy(state->window, end - copy, copy);
      utils.arraySet(state.window, src, end - copy, copy, 0);
      state.wnext = copy;
      state.whave = state.wsize;
    }
    else {
      state.wnext += dist;
      if (state.wnext === state.wsize) { state.wnext = 0; }
      if (state.whave < state.wsize) { state.whave += dist; }
    }
  }
  return 0;
}

function inflate(strm, flush) {
  var state;
  var input, output;          // input/output buffers
  var next;                   /* next input INDEX */
  var put;                    /* next output INDEX */
  var have, left;             /* available input and output */
  var hold;                   /* bit buffer */
  var bits;                   /* bits in bit buffer */
  var _in, _out;              /* save starting available input and output */
  var copy;                   /* number of stored or match bytes to copy */
  var from;                   /* where to copy match bytes from */
  var from_source;
  var here = 0;               /* current decoding table entry */
  var here_bits, here_op, here_val; // paked "here" denormalized (JS specific)
  //var last;                   /* parent table entry */
  var last_bits, last_op, last_val; // paked "last" denormalized (JS specific)
  var len;                    /* length to copy for repeats, bits to drop */
  var ret;                    /* return code */
  var hbuf = new utils.Buf8(4);    /* buffer for gzip header crc calculation */
  var opts;

  var n; // temporary var for NEED_BITS

  var order = /* permutation of code lengths */
    [ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ];


  if (!strm || !strm.state || !strm.output ||
      (!strm.input && strm.avail_in !== 0)) {
    return Z_STREAM_ERROR;
  }

  state = strm.state;
  if (state.mode === TYPE) { state.mode = TYPEDO; }    /* skip check */


  //--- LOAD() ---
  put = strm.next_out;
  output = strm.output;
  left = strm.avail_out;
  next = strm.next_in;
  input = strm.input;
  have = strm.avail_in;
  hold = state.hold;
  bits = state.bits;
  //---

  _in = have;
  _out = left;
  ret = Z_OK;

  inf_leave: // goto emulation
  for (;;) {
    switch (state.mode) {
      case HEAD:
        if (state.wrap === 0) {
          state.mode = TYPEDO;
          break;
        }
        //=== NEEDBITS(16);
        while (bits < 16) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        if ((state.wrap & 2) && hold === 0x8b1f) {  /* gzip header */
          state.check = 0/*crc32(0L, Z_NULL, 0)*/;
          //=== CRC2(state.check, hold);
          hbuf[0] = hold & 0xff;
          hbuf[1] = (hold >>> 8) & 0xff;
          state.check = crc32(state.check, hbuf, 2, 0);
          //===//

          //=== INITBITS();
          hold = 0;
          bits = 0;
          //===//
          state.mode = FLAGS;
          break;
        }
        state.flags = 0;           /* expect zlib header */
        if (state.head) {
          state.head.done = false;
        }
        if (!(state.wrap & 1) ||   /* check if zlib header allowed */
          (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) {
          strm.msg = 'incorrect header check';
          state.mode = BAD;
          break;
        }
        if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED) {
          strm.msg = 'unknown compression method';
          state.mode = BAD;
          break;
        }
        //--- DROPBITS(4) ---//
        hold >>>= 4;
        bits -= 4;
        //---//
        len = (hold & 0x0f)/*BITS(4)*/ + 8;
        if (state.wbits === 0) {
          state.wbits = len;
        }
        else if (len > state.wbits) {
          strm.msg = 'invalid window size';
          state.mode = BAD;
          break;
        }
        state.dmax = 1 << len;
        //Tracev((stderr, "inflate:   zlib header ok\n"));
        strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
        state.mode = hold & 0x200 ? DICTID : TYPE;
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        break;
      case FLAGS:
        //=== NEEDBITS(16); */
        while (bits < 16) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.flags = hold;
        if ((state.flags & 0xff) !== Z_DEFLATED) {
          strm.msg = 'unknown compression method';
          state.mode = BAD;
          break;
        }
        if (state.flags & 0xe000) {
          strm.msg = 'unknown header flags set';
          state.mode = BAD;
          break;
        }
        if (state.head) {
          state.head.text = ((hold >> 8) & 1);
        }
        if (state.flags & 0x0200) {
          //=== CRC2(state.check, hold);
          hbuf[0] = hold & 0xff;
          hbuf[1] = (hold >>> 8) & 0xff;
          state.check = crc32(state.check, hbuf, 2, 0);
          //===//
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        state.mode = TIME;
        /* falls through */
      case TIME:
        //=== NEEDBITS(32); */
        while (bits < 32) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        if (state.head) {
          state.head.time = hold;
        }
        if (state.flags & 0x0200) {
          //=== CRC4(state.check, hold)
          hbuf[0] = hold & 0xff;
          hbuf[1] = (hold >>> 8) & 0xff;
          hbuf[2] = (hold >>> 16) & 0xff;
          hbuf[3] = (hold >>> 24) & 0xff;
          state.check = crc32(state.check, hbuf, 4, 0);
          //===
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        state.mode = OS;
        /* falls through */
      case OS:
        //=== NEEDBITS(16); */
        while (bits < 16) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        if (state.head) {
          state.head.xflags = (hold & 0xff);
          state.head.os = (hold >> 8);
        }
        if (state.flags & 0x0200) {
          //=== CRC2(state.check, hold);
          hbuf[0] = hold & 0xff;
          hbuf[1] = (hold >>> 8) & 0xff;
          state.check = crc32(state.check, hbuf, 2, 0);
          //===//
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        state.mode = EXLEN;
        /* falls through */
      case EXLEN:
        if (state.flags & 0x0400) {
          //=== NEEDBITS(16); */
          while (bits < 16) {
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
          }
          //===//
          state.length = hold;
          if (state.head) {
            state.head.extra_len = hold;
          }
          if (state.flags & 0x0200) {
            //=== CRC2(state.check, hold);
            hbuf[0] = hold & 0xff;
            hbuf[1] = (hold >>> 8) & 0xff;
            state.check = crc32(state.check, hbuf, 2, 0);
            //===//
          }
          //=== INITBITS();
          hold = 0;
          bits = 0;
          //===//
        }
        else if (state.head) {
          state.head.extra = null/*Z_NULL*/;
        }
        state.mode = EXTRA;
        /* falls through */
      case EXTRA:
        if (state.flags & 0x0400) {
          copy = state.length;
          if (copy > have) { copy = have; }
          if (copy) {
            if (state.head) {
              len = state.head.extra_len - state.length;
              if (!state.head.extra) {
                // Use untyped array for more convenient processing later
                state.head.extra = new Array(state.head.extra_len);
              }
              utils.arraySet(
                state.head.extra,
                input,
                next,
                // extra field is limited to 65536 bytes
                // - no need for additional size check
                copy,
                /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/
                len
              );
              //zmemcpy(state.head.extra + len, next,
              //        len + copy > state.head.extra_max ?
              //        state.head.extra_max - len : copy);
            }
            if (state.flags & 0x0200) {
              state.check = crc32(state.check, input, copy, next);
            }
            have -= copy;
            next += copy;
            state.length -= copy;
          }
          if (state.length) { break inf_leave; }
        }
        state.length = 0;
        state.mode = NAME;
        /* falls through */
      case NAME:
        if (state.flags & 0x0800) {
          if (have === 0) { break inf_leave; }
          copy = 0;
          do {
            // TODO: 2 or 1 bytes?
            len = input[next + copy++];
            /* use constant limit because in js we should not preallocate memory */
            if (state.head && len &&
                (state.length < 65536 /*state.head.name_max*/)) {
              state.head.name += String.fromCharCode(len);
            }
          } while (len && copy < have);

          if (state.flags & 0x0200) {
            state.check = crc32(state.check, input, copy, next);
          }
          have -= copy;
          next += copy;
          if (len) { break inf_leave; }
        }
        else if (state.head) {
          state.head.name = null;
        }
        state.length = 0;
        state.mode = COMMENT;
        /* falls through */
      case COMMENT:
        if (state.flags & 0x1000) {
          if (have === 0) { break inf_leave; }
          copy = 0;
          do {
            len = input[next + copy++];
            /* use constant limit because in js we should not preallocate memory */
            if (state.head && len &&
                (state.length < 65536 /*state.head.comm_max*/)) {
              state.head.comment += String.fromCharCode(len);
            }
          } while (len && copy < have);
          if (state.flags & 0x0200) {
            state.check = crc32(state.check, input, copy, next);
          }
          have -= copy;
          next += copy;
          if (len) { break inf_leave; }
        }
        else if (state.head) {
          state.head.comment = null;
        }
        state.mode = HCRC;
        /* falls through */
      case HCRC:
        if (state.flags & 0x0200) {
          //=== NEEDBITS(16); */
          while (bits < 16) {
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
          }
          //===//
          if (hold !== (state.check & 0xffff)) {
            strm.msg = 'header crc mismatch';
            state.mode = BAD;
            break;
          }
          //=== INITBITS();
          hold = 0;
          bits = 0;
          //===//
        }
        if (state.head) {
          state.head.hcrc = ((state.flags >> 9) & 1);
          state.head.done = true;
        }
        strm.adler = state.check = 0;
        state.mode = TYPE;
        break;
      case DICTID:
        //=== NEEDBITS(32); */
        while (bits < 32) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        strm.adler = state.check = zswap32(hold);
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        state.mode = DICT;
        /* falls through */
      case DICT:
        if (state.havedict === 0) {
          //--- RESTORE() ---
          strm.next_out = put;
          strm.avail_out = left;
          strm.next_in = next;
          strm.avail_in = have;
          state.hold = hold;
          state.bits = bits;
          //---
          return Z_NEED_DICT;
        }
        strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
        state.mode = TYPE;
        /* falls through */
      case TYPE:
        if (flush === Z_BLOCK || flush === Z_TREES) { break inf_leave; }
        /* falls through */
      case TYPEDO:
        if (state.last) {
          //--- BYTEBITS() ---//
          hold >>>= bits & 7;
          bits -= bits & 7;
          //---//
          state.mode = CHECK;
          break;
        }
        //=== NEEDBITS(3); */
        while (bits < 3) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.last = (hold & 0x01)/*BITS(1)*/;
        //--- DROPBITS(1) ---//
        hold >>>= 1;
        bits -= 1;
        //---//

        switch ((hold & 0x03)/*BITS(2)*/) {
          case 0:                             /* stored block */
            //Tracev((stderr, "inflate:     stored block%s\n",
            //        state.last ? " (last)" : ""));
            state.mode = STORED;
            break;
          case 1:                             /* fixed block */
            fixedtables(state);
            //Tracev((stderr, "inflate:     fixed codes block%s\n",
            //        state.last ? " (last)" : ""));
            state.mode = LEN_;             /* decode codes */
            if (flush === Z_TREES) {
              //--- DROPBITS(2) ---//
              hold >>>= 2;
              bits -= 2;
              //---//
              break inf_leave;
            }
            break;
          case 2:                             /* dynamic block */
            //Tracev((stderr, "inflate:     dynamic codes block%s\n",
            //        state.last ? " (last)" : ""));
            state.mode = TABLE;
            break;
          case 3:
            strm.msg = 'invalid block type';
            state.mode = BAD;
        }
        //--- DROPBITS(2) ---//
        hold >>>= 2;
        bits -= 2;
        //---//
        break;
      case STORED:
        //--- BYTEBITS() ---// /* go to byte boundary */
        hold >>>= bits & 7;
        bits -= bits & 7;
        //---//
        //=== NEEDBITS(32); */
        while (bits < 32) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) {
          strm.msg = 'invalid stored block lengths';
          state.mode = BAD;
          break;
        }
        state.length = hold & 0xffff;
        //Tracev((stderr, "inflate:       stored length %u\n",
        //        state.length));
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        state.mode = COPY_;
        if (flush === Z_TREES) { break inf_leave; }
        /* falls through */
      case COPY_:
        state.mode = COPY;
        /* falls through */
      case COPY:
        copy = state.length;
        if (copy) {
          if (copy > have) { copy = have; }
          if (copy > left) { copy = left; }
          if (copy === 0) { break inf_leave; }
          //--- zmemcpy(put, next, copy); ---
          utils.arraySet(output, input, next, copy, put);
          //---//
          have -= copy;
          next += copy;
          left -= copy;
          put += copy;
          state.length -= copy;
          break;
        }
        //Tracev((stderr, "inflate:       stored end\n"));
        state.mode = TYPE;
        break;
      case TABLE:
        //=== NEEDBITS(14); */
        while (bits < 14) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257;
        //--- DROPBITS(5) ---//
        hold >>>= 5;
        bits -= 5;
        //---//
        state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1;
        //--- DROPBITS(5) ---//
        hold >>>= 5;
        bits -= 5;
        //---//
        state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4;
        //--- DROPBITS(4) ---//
        hold >>>= 4;
        bits -= 4;
        //---//
//#ifndef PKZIP_BUG_WORKAROUND
        if (state.nlen > 286 || state.ndist > 30) {
          strm.msg = 'too many length or distance symbols';
          state.mode = BAD;
          break;
        }
//#endif
        //Tracev((stderr, "inflate:       table sizes ok\n"));
        state.have = 0;
        state.mode = LENLENS;
        /* falls through */
      case LENLENS:
        while (state.have < state.ncode) {
          //=== NEEDBITS(3);
          while (bits < 3) {
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
          }
          //===//
          state.lens[order[state.have++]] = (hold & 0x07);//BITS(3);
          //--- DROPBITS(3) ---//
          hold >>>= 3;
          bits -= 3;
          //---//
        }
        while (state.have < 19) {
          state.lens[order[state.have++]] = 0;
        }
        // We have separate tables & no pointers. 2 commented lines below not needed.
        //state.next = state.codes;
        //state.lencode = state.next;
        // Switch to use dynamic table
        state.lencode = state.lendyn;
        state.lenbits = 7;

        opts = { bits: state.lenbits };
        ret = inflate_table(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts);
        state.lenbits = opts.bits;

        if (ret) {
          strm.msg = 'invalid code lengths set';
          state.mode = BAD;
          break;
        }
        //Tracev((stderr, "inflate:       code lengths ok\n"));
        state.have = 0;
        state.mode = CODELENS;
        /* falls through */
      case CODELENS:
        while (state.have < state.nlen + state.ndist) {
          for (;;) {
            here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/
            here_bits = here >>> 24;
            here_op = (here >>> 16) & 0xff;
            here_val = here & 0xffff;

            if ((here_bits) <= bits) { break; }
            //--- PULLBYTE() ---//
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
            //---//
          }
          if (here_val < 16) {
            //--- DROPBITS(here.bits) ---//
            hold >>>= here_bits;
            bits -= here_bits;
            //---//
            state.lens[state.have++] = here_val;
          }
          else {
            if (here_val === 16) {
              //=== NEEDBITS(here.bits + 2);
              n = here_bits + 2;
              while (bits < n) {
                if (have === 0) { break inf_leave; }
                have--;
                hold += input[next++] << bits;
                bits += 8;
              }
              //===//
              //--- DROPBITS(here.bits) ---//
              hold >>>= here_bits;
              bits -= here_bits;
              //---//
              if (state.have === 0) {
                strm.msg = 'invalid bit length repeat';
                state.mode = BAD;
                break;
              }
              len = state.lens[state.have - 1];
              copy = 3 + (hold & 0x03);//BITS(2);
              //--- DROPBITS(2) ---//
              hold >>>= 2;
              bits -= 2;
              //---//
            }
            else if (here_val === 17) {
              //=== NEEDBITS(here.bits + 3);
              n = here_bits + 3;
              while (bits < n) {
                if (have === 0) { break inf_leave; }
                have--;
                hold += input[next++] << bits;
                bits += 8;
              }
              //===//
              //--- DROPBITS(here.bits) ---//
              hold >>>= here_bits;
              bits -= here_bits;
              //---//
              len = 0;
              copy = 3 + (hold & 0x07);//BITS(3);
              //--- DROPBITS(3) ---//
              hold >>>= 3;
              bits -= 3;
              //---//
            }
            else {
              //=== NEEDBITS(here.bits + 7);
              n = here_bits + 7;
              while (bits < n) {
                if (have === 0) { break inf_leave; }
                have--;
                hold += input[next++] << bits;
                bits += 8;
              }
              //===//
              //--- DROPBITS(here.bits) ---//
              hold >>>= here_bits;
              bits -= here_bits;
              //---//
              len = 0;
              copy = 11 + (hold & 0x7f);//BITS(7);
              //--- DROPBITS(7) ---//
              hold >>>= 7;
              bits -= 7;
              //---//
            }
            if (state.have + copy > state.nlen + state.ndist) {
              strm.msg = 'invalid bit length repeat';
              state.mode = BAD;
              break;
            }
            while (copy--) {
              state.lens[state.have++] = len;
            }
          }
        }

        /* handle error breaks in while */
        if (state.mode === BAD) { break; }

        /* check for end-of-block code (better have one) */
        if (state.lens[256] === 0) {
          strm.msg = 'invalid code -- missing end-of-block';
          state.mode = BAD;
          break;
        }

        /* build code tables -- note: do not change the lenbits or distbits
           values here (9 and 6) without reading the comments in inftrees.h
           concerning the ENOUGH constants, which depend on those values */
        state.lenbits = 9;

        opts = { bits: state.lenbits };
        ret = inflate_table(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);
        // We have separate tables & no pointers. 2 commented lines below not needed.
        // state.next_index = opts.table_index;
        state.lenbits = opts.bits;
        // state.lencode = state.next;

        if (ret) {
          strm.msg = 'invalid literal/lengths set';
          state.mode = BAD;
          break;
        }

        state.distbits = 6;
        //state.distcode.copy(state.codes);
        // Switch to use dynamic table
        state.distcode = state.distdyn;
        opts = { bits: state.distbits };
        ret = inflate_table(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);
        // We have separate tables & no pointers. 2 commented lines below not needed.
        // state.next_index = opts.table_index;
        state.distbits = opts.bits;
        // state.distcode = state.next;

        if (ret) {
          strm.msg = 'invalid distances set';
          state.mode = BAD;
          break;
        }
        //Tracev((stderr, 'inflate:       codes ok\n'));
        state.mode = LEN_;
        if (flush === Z_TREES) { break inf_leave; }
        /* falls through */
      case LEN_:
        state.mode = LEN;
        /* falls through */
      case LEN:
        if (have >= 6 && left >= 258) {
          //--- RESTORE() ---
          strm.next_out = put;
          strm.avail_out = left;
          strm.next_in = next;
          strm.avail_in = have;
          state.hold = hold;
          state.bits = bits;
          //---
          inflate_fast(strm, _out);
          //--- LOAD() ---
          put = strm.next_out;
          output = strm.output;
          left = strm.avail_out;
          next = strm.next_in;
          input = strm.input;
          have = strm.avail_in;
          hold = state.hold;
          bits = state.bits;
          //---

          if (state.mode === TYPE) {
            state.back = -1;
          }
          break;
        }
        state.back = 0;
        for (;;) {
          here = state.lencode[hold & ((1 << state.lenbits) - 1)];  /*BITS(state.lenbits)*/
          here_bits = here >>> 24;
          here_op = (here >>> 16) & 0xff;
          here_val = here & 0xffff;

          if (here_bits <= bits) { break; }
          //--- PULLBYTE() ---//
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
          //---//
        }
        if (here_op && (here_op & 0xf0) === 0) {
          last_bits = here_bits;
          last_op = here_op;
          last_val = here_val;
          for (;;) {
            here = state.lencode[last_val +
                    ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];
            here_bits = here >>> 24;
            here_op = (here >>> 16) & 0xff;
            here_val = here & 0xffff;

            if ((last_bits + here_bits) <= bits) { break; }
            //--- PULLBYTE() ---//
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
            //---//
          }
          //--- DROPBITS(last.bits) ---//
          hold >>>= last_bits;
          bits -= last_bits;
          //---//
          state.back += last_bits;
        }
        //--- DROPBITS(here.bits) ---//
        hold >>>= here_bits;
        bits -= here_bits;
        //---//
        state.back += here_bits;
        state.length = here_val;
        if (here_op === 0) {
          //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
          //        "inflate:         literal '%c'\n" :
          //        "inflate:         literal 0x%02x\n", here.val));
          state.mode = LIT;
          break;
        }
        if (here_op & 32) {
          //Tracevv((stderr, "inflate:         end of block\n"));
          state.back = -1;
          state.mode = TYPE;
          break;
        }
        if (here_op & 64) {
          strm.msg = 'invalid literal/length code';
          state.mode = BAD;
          break;
        }
        state.extra = here_op & 15;
        state.mode = LENEXT;
        /* falls through */
      case LENEXT:
        if (state.extra) {
          //=== NEEDBITS(state.extra);
          n = state.extra;
          while (bits < n) {
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
          }
          //===//
          state.length += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;
          //--- DROPBITS(state.extra) ---//
          hold >>>= state.extra;
          bits -= state.extra;
          //---//
          state.back += state.extra;
        }
        //Tracevv((stderr, "inflate:         length %u\n", state.length));
        state.was = state.length;
        state.mode = DIST;
        /* falls through */
      case DIST:
        for (;;) {
          here = state.distcode[hold & ((1 << state.distbits) - 1)];/*BITS(state.distbits)*/
          here_bits = here >>> 24;
          here_op = (here >>> 16) & 0xff;
          here_val = here & 0xffff;

          if ((here_bits) <= bits) { break; }
          //--- PULLBYTE() ---//
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
          //---//
        }
        if ((here_op & 0xf0) === 0) {
          last_bits = here_bits;
          last_op = here_op;
          last_val = here_val;
          for (;;) {
            here = state.distcode[last_val +
                    ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];
            here_bits = here >>> 24;
            here_op = (here >>> 16) & 0xff;
            here_val = here & 0xffff;

            if ((last_bits + here_bits) <= bits) { break; }
            //--- PULLBYTE() ---//
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
            //---//
          }
          //--- DROPBITS(last.bits) ---//
          hold >>>= last_bits;
          bits -= last_bits;
          //---//
          state.back += last_bits;
        }
        //--- DROPBITS(here.bits) ---//
        hold >>>= here_bits;
        bits -= here_bits;
        //---//
        state.back += here_bits;
        if (here_op & 64) {
          strm.msg = 'invalid distance code';
          state.mode = BAD;
          break;
        }
        state.offset = here_val;
        state.extra = (here_op) & 15;
        state.mode = DISTEXT;
        /* falls through */
      case DISTEXT:
        if (state.extra) {
          //=== NEEDBITS(state.extra);
          n = state.extra;
          while (bits < n) {
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
          }
          //===//
          state.offset += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;
          //--- DROPBITS(state.extra) ---//
          hold >>>= state.extra;
          bits -= state.extra;
          //---//
          state.back += state.extra;
        }
//#ifdef INFLATE_STRICT
        if (state.offset > state.dmax) {
          strm.msg = 'invalid distance too far back';
          state.mode = BAD;
          break;
        }
//#endif
        //Tracevv((stderr, "inflate:         distance %u\n", state.offset));
        state.mode = MATCH;
        /* falls through */
      case MATCH:
        if (left === 0) { break inf_leave; }
        copy = _out - left;
        if (state.offset > copy) {         /* copy from window */
          copy = state.offset - copy;
          if (copy > state.whave) {
            if (state.sane) {
              strm.msg = 'invalid distance too far back';
              state.mode = BAD;
              break;
            }
// (!) This block is disabled in zlib defaults,
// don't enable it for binary compatibility
//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
//          Trace((stderr, "inflate.c too far\n"));
//          copy -= state.whave;
//          if (copy > state.length) { copy = state.length; }
//          if (copy > left) { copy = left; }
//          left -= copy;
//          state.length -= copy;
//          do {
//            output[put++] = 0;
//          } while (--copy);
//          if (state.length === 0) { state.mode = LEN; }
//          break;
//#endif
          }
          if (copy > state.wnext) {
            copy -= state.wnext;
            from = state.wsize - copy;
          }
          else {
            from = state.wnext - copy;
          }
          if (copy > state.length) { copy = state.length; }
          from_source = state.window;
        }
        else {                              /* copy from output */
          from_source = output;
          from = put - state.offset;
          copy = state.length;
        }
        if (copy > left) { copy = left; }
        left -= copy;
        state.length -= copy;
        do {
          output[put++] = from_source[from++];
        } while (--copy);
        if (state.length === 0) { state.mode = LEN; }
        break;
      case LIT:
        if (left === 0) { break inf_leave; }
        output[put++] = state.length;
        left--;
        state.mode = LEN;
        break;
      case CHECK:
        if (state.wrap) {
          //=== NEEDBITS(32);
          while (bits < 32) {
            if (have === 0) { break inf_leave; }
            have--;
            // Use '|' instead of '+' to make sure that result is signed
            hold |= input[next++] << bits;
            bits += 8;
          }
          //===//
          _out -= left;
          strm.total_out += _out;
          state.total += _out;
          if (_out) {
            strm.adler = state.check =
                /*UPDATE(state.check, put - _out, _out);*/
                (state.flags ? crc32(state.check, output, _out, put - _out) : adler32(state.check, output, _out, put - _out));

          }
          _out = left;
          // NB: crc32 stored as signed 32-bit int, zswap32 returns signed too
          if ((state.flags ? hold : zswap32(hold)) !== state.check) {
            strm.msg = 'incorrect data check';
            state.mode = BAD;
            break;
          }
          //=== INITBITS();
          hold = 0;
          bits = 0;
          //===//
          //Tracev((stderr, "inflate:   check matches trailer\n"));
        }
        state.mode = LENGTH;
        /* falls through */
      case LENGTH:
        if (state.wrap && state.flags) {
          //=== NEEDBITS(32);
          while (bits < 32) {
            if (have === 0) { break inf_leave; }
            have--;
            hold += input[next++] << bits;
            bits += 8;
          }
          //===//
          if (hold !== (state.total & 0xffffffff)) {
            strm.msg = 'incorrect length check';
            state.mode = BAD;
            break;
          }
          //=== INITBITS();
          hold = 0;
          bits = 0;
          //===//
          //Tracev((stderr, "inflate:   length matches trailer\n"));
        }
        state.mode = DONE;
        /* falls through */
      case DONE:
        ret = Z_STREAM_END;
        break inf_leave;
      case BAD:
        ret = Z_DATA_ERROR;
        break inf_leave;
      case MEM:
        return Z_MEM_ERROR;
      case SYNC:
        /* falls through */
      default:
        return Z_STREAM_ERROR;
    }
  }

  // inf_leave <- here is real place for "goto inf_leave", emulated via "break inf_leave"

  /*
     Return from inflate(), updating the total counts and the check value.
     If there was no progress during the inflate() call, return a buffer
     error.  Call updatewindow() to create and/or update the window state.
     Note: a memory error from inflate() is non-recoverable.
   */

  //--- RESTORE() ---
  strm.next_out = put;
  strm.avail_out = left;
  strm.next_in = next;
  strm.avail_in = have;
  state.hold = hold;
  state.bits = bits;
  //---

  if (state.wsize || (_out !== strm.avail_out && state.mode < BAD &&
                      (state.mode < CHECK || flush !== Z_FINISH))) {
    if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out)) {
      state.mode = MEM;
      return Z_MEM_ERROR;
    }
  }
  _in -= strm.avail_in;
  _out -= strm.avail_out;
  strm.total_in += _in;
  strm.total_out += _out;
  state.total += _out;
  if (state.wrap && _out) {
    strm.adler = state.check = /*UPDATE(state.check, strm.next_out - _out, _out);*/
      (state.flags ? crc32(state.check, output, _out, strm.next_out - _out) : adler32(state.check, output, _out, strm.next_out - _out));
  }
  strm.data_type = state.bits + (state.last ? 64 : 0) +
                    (state.mode === TYPE ? 128 : 0) +
                    (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0);
  if (((_in === 0 && _out === 0) || flush === Z_FINISH) && ret === Z_OK) {
    ret = Z_BUF_ERROR;
  }
  return ret;
}

function inflateEnd(strm) {

  if (!strm || !strm.state /*|| strm->zfree == (free_func)0*/) {
    return Z_STREAM_ERROR;
  }

  var state = strm.state;
  if (state.window) {
    state.window = null;
  }
  strm.state = null;
  return Z_OK;
}

function inflateGetHeader(strm, head) {
  var state;

  /* check state */
  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;
  if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR; }

  /* save header structure */
  state.head = head;
  head.done = false;
  return Z_OK;
}

function inflateSetDictionary(strm, dictionary) {
  var dictLength = dictionary.length;

  var state;
  var dictid;
  var ret;

  /* check state */
  if (!strm /* == Z_NULL */ || !strm.state /* == Z_NULL */) { return Z_STREAM_ERROR; }
  state = strm.state;

  if (state.wrap !== 0 && state.mode !== DICT) {
    return Z_STREAM_ERROR;
  }

  /* check for correct dictionary identifier */
  if (state.mode === DICT) {
    dictid = 1; /* adler32(0, null, 0)*/
    /* dictid = adler32(dictid, dictionary, dictLength); */
    dictid = adler32(dictid, dictionary, dictLength, 0);
    if (dictid !== state.check) {
      return Z_DATA_ERROR;
    }
  }
  /* copy dictionary to window using updatewindow(), which will amend the
   existing dictionary if appropriate */
  ret = updatewindow(strm, dictionary, dictLength, dictLength);
  if (ret) {
    state.mode = MEM;
    return Z_MEM_ERROR;
  }
  state.havedict = 1;
  // Tracev((stderr, "inflate:   dictionary set\n"));
  return Z_OK;
}

exports.inflateReset = inflateReset;
exports.inflateReset2 = inflateReset2;
exports.inflateResetKeep = inflateResetKeep;
exports.inflateInit = inflateInit;
exports.inflateInit2 = inflateInit2;
exports.inflate = inflate;
exports.inflateEnd = inflateEnd;
exports.inflateGetHeader = inflateGetHeader;
exports.inflateSetDictionary = inflateSetDictionary;
exports.inflateInfo = 'pako inflate (from Nodeca project)';

/* Not implemented
exports.inflateCopy = inflateCopy;
exports.inflateGetDictionary = inflateGetDictionary;
exports.inflateMark = inflateMark;
exports.inflatePrime = inflatePrime;
exports.inflateSync = inflateSync;
exports.inflateSyncPoint = inflateSyncPoint;
exports.inflateUndermine = inflateUndermine;
*/

},{"../utils/common":292,"./adler32":294,"./crc32":296,"./inffast":299,"./inftrees":301}],301:[function(require,module,exports){
'use strict';

// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

var utils = require('../utils/common');

var MAXBITS = 15;
var ENOUGH_LENS = 852;
var ENOUGH_DISTS = 592;
//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS);

var CODES = 0;
var LENS = 1;
var DISTS = 2;

var lbase = [ /* Length codes 257..285 base */
  3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
  35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0
];

var lext = [ /* Length codes 257..285 extra */
  16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
  19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78
];

var dbase = [ /* Distance codes 0..29 base */
  1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
  257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
  8193, 12289, 16385, 24577, 0, 0
];

var dext = [ /* Distance codes 0..29 extra */
  16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
  23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
  28, 28, 29, 29, 64, 64
];

module.exports = function inflate_table(type, lens, lens_index, codes, table, table_index, work, opts)
{
  var bits = opts.bits;
      //here = opts.here; /* table entry for duplication */

  var len = 0;               /* a code's length in bits */
  var sym = 0;               /* index of code symbols */
  var min = 0, max = 0;          /* minimum and maximum code lengths */
  var root = 0;              /* number of index bits for root table */
  var curr = 0;              /* number of index bits for current table */
  var drop = 0;              /* code bits to drop for sub-table */
  var left = 0;                   /* number of prefix codes available */
  var used = 0;              /* code entries in table used */
  var huff = 0;              /* Huffman code */
  var incr;              /* for incrementing code, index */
  var fill;              /* index for replicating entries */
  var low;               /* low bits for current root entry */
  var mask;              /* mask for low root bits */
  var next;             /* next available space in table */
  var base = null;     /* base value table to use */
  var base_index = 0;
//  var shoextra;    /* extra bits table to use */
  var end;                    /* use base and extra for symbol > end */
  var count = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1];    /* number of codes of each length */
  var offs = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1];     /* offsets in table for each length */
  var extra = null;
  var extra_index = 0;

  var here_bits, here_op, here_val;

  /*
   Process a set of code lengths to create a canonical Huffman code.  The
   code lengths are lens[0..codes-1].  Each length corresponds to the
   symbols 0..codes-1.  The Huffman code is generated by first sorting the
   symbols by length from short to long, and retaining the symbol order
   for codes with equal lengths.  Then the code starts with all zero bits
   for the first code of the shortest length, and the codes are integer
   increments for the same length, and zeros are appended as the length
   increases.  For the deflate format, these bits are stored backwards
   from their more natural integer increment ordering, and so when the
   decoding tables are built in the large loop below, the integer codes
   are incremented backwards.

   This routine assumes, but does not check, that all of the entries in
   lens[] are in the range 0..MAXBITS.  The caller must assure this.
   1..MAXBITS is interpreted as that code length.  zero means that that
   symbol does not occur in this code.

   The codes are sorted by computing a count of codes for each length,
   creating from that a table of starting indices for each length in the
   sorted table, and then entering the symbols in order in the sorted
   table.  The sorted table is work[], with that space being provided by
   the caller.

   The length counts are used for other purposes as well, i.e. finding
   the minimum and maximum length codes, determining if there are any
   codes at all, checking for a valid set of lengths, and looking ahead
   at length counts to determine sub-table sizes when building the
   decoding tables.
   */

  /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
  for (len = 0; len <= MAXBITS; len++) {
    count[len] = 0;
  }
  for (sym = 0; sym < codes; sym++) {
    count[lens[lens_index + sym]]++;
  }

  /* bound code lengths, force root to be within code lengths */
  root = bits;
  for (max = MAXBITS; max >= 1; max--) {
    if (count[max] !== 0) { break; }
  }
  if (root > max) {
    root = max;
  }
  if (max === 0) {                     /* no symbols to code at all */
    //table.op[opts.table_index] = 64;  //here.op = (var char)64;    /* invalid code marker */
    //table.bits[opts.table_index] = 1;   //here.bits = (var char)1;
    //table.val[opts.table_index++] = 0;   //here.val = (var short)0;
    table[table_index++] = (1 << 24) | (64 << 16) | 0;


    //table.op[opts.table_index] = 64;
    //table.bits[opts.table_index] = 1;
    //table.val[opts.table_index++] = 0;
    table[table_index++] = (1 << 24) | (64 << 16) | 0;

    opts.bits = 1;
    return 0;     /* no symbols, but wait for decoding to report error */
  }
  for (min = 1; min < max; min++) {
    if (count[min] !== 0) { break; }
  }
  if (root < min) {
    root = min;
  }

  /* check for an over-subscribed or incomplete set of lengths */
  left = 1;
  for (len = 1; len <= MAXBITS; len++) {
    left <<= 1;
    left -= count[len];
    if (left < 0) {
      return -1;
    }        /* over-subscribed */
  }
  if (left > 0 && (type === CODES || max !== 1)) {
    return -1;                      /* incomplete set */
  }

  /* generate offsets into symbol table for each length for sorting */
  offs[1] = 0;
  for (len = 1; len < MAXBITS; len++) {
    offs[len + 1] = offs[len] + count[len];
  }

  /* sort symbols by length, by symbol order within each length */
  for (sym = 0; sym < codes; sym++) {
    if (lens[lens_index + sym] !== 0) {
      work[offs[lens[lens_index + sym]]++] = sym;
    }
  }

  /*
   Create and fill in decoding tables.  In this loop, the table being
   filled is at next and has curr index bits.  The code being used is huff
   with length len.  That code is converted to an index by dropping drop
   bits off of the bottom.  For codes where len is less than drop + curr,
   those top drop + curr - len bits are incremented through all values to
   fill the table with replicated entries.

   root is the number of index bits for the root table.  When len exceeds
   root, sub-tables are created pointed to by the root entry with an index
   of the low root bits of huff.  This is saved in low to check for when a
   new sub-table should be started.  drop is zero when the root table is
   being filled, and drop is root when sub-tables are being filled.

   When a new sub-table is needed, it is necessary to look ahead in the
   code lengths to determine what size sub-table is needed.  The length
   counts are used for this, and so count[] is decremented as codes are
   entered in the tables.

   used keeps track of how many table entries have been allocated from the
   provided *table space.  It is checked for LENS and DIST tables against
   the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
   the initial root table size constants.  See the comments in inftrees.h
   for more information.

   sym increments through all symbols, and the loop terminates when
   all codes of length max, i.e. all codes, have been processed.  This
   routine permits incomplete codes, so another loop after this one fills
   in the rest of the decoding tables with invalid code markers.
   */

  /* set up for code type */
  // poor man optimization - use if-else instead of switch,
  // to avoid deopts in old v8
  if (type === CODES) {
    base = extra = work;    /* dummy value--not used */
    end = 19;

  } else if (type === LENS) {
    base = lbase;
    base_index -= 257;
    extra = lext;
    extra_index -= 257;
    end = 256;

  } else {                    /* DISTS */
    base = dbase;
    extra = dext;
    end = -1;
  }

  /* initialize opts for loop */
  huff = 0;                   /* starting code */
  sym = 0;                    /* starting code symbol */
  len = min;                  /* starting code length */
  next = table_index;              /* current table to fill in */
  curr = root;                /* current table index bits */
  drop = 0;                   /* current bits to drop from code for index */
  low = -1;                   /* trigger new sub-table when len > root */
  used = 1 << root;          /* use root table entries */
  mask = used - 1;            /* mask for comparing low */

  /* check available table space */
  if ((type === LENS && used > ENOUGH_LENS) ||
    (type === DISTS && used > ENOUGH_DISTS)) {
    return 1;
  }

  /* process all codes and make table entries */
  for (;;) {
    /* create table entry */
    here_bits = len - drop;
    if (work[sym] < end) {
      here_op = 0;
      here_val = work[sym];
    }
    else if (work[sym] > end) {
      here_op = extra[extra_index + work[sym]];
      here_val = base[base_index + work[sym]];
    }
    else {
      here_op = 32 + 64;         /* end of block */
      here_val = 0;
    }

    /* replicate for those indices with low len bits equal to huff */
    incr = 1 << (len - drop);
    fill = 1 << curr;
    min = fill;                 /* save offset to next table */
    do {
      fill -= incr;
      table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0;
    } while (fill !== 0);

    /* backwards increment the len-bit code huff */
    incr = 1 << (len - 1);
    while (huff & incr) {
      incr >>= 1;
    }
    if (incr !== 0) {
      huff &= incr - 1;
      huff += incr;
    } else {
      huff = 0;
    }

    /* go to next symbol, update count, len */
    sym++;
    if (--count[len] === 0) {
      if (len === max) { break; }
      len = lens[lens_index + work[sym]];
    }

    /* create new sub-table if needed */
    if (len > root && (huff & mask) !== low) {
      /* if first time, transition to sub-tables */
      if (drop === 0) {
        drop = root;
      }

      /* increment past last table */
      next += min;            /* here min is 1 << curr */

      /* determine length of next table */
      curr = len - drop;
      left = 1 << curr;
      while (curr + drop < max) {
        left -= count[curr + drop];
        if (left <= 0) { break; }
        curr++;
        left <<= 1;
      }

      /* check for enough space */
      used += 1 << curr;
      if ((type === LENS && used > ENOUGH_LENS) ||
        (type === DISTS && used > ENOUGH_DISTS)) {
        return 1;
      }

      /* point entry in root table to sub-table */
      low = huff & mask;
      /*table.op[low] = curr;
      table.bits[low] = root;
      table.val[low] = next - opts.table_index;*/
      table[low] = (root << 24) | (curr << 16) | (next - table_index) |0;
    }
  }

  /* fill in remaining table entry if code is incomplete (guaranteed to have
   at most one remaining entry, since if the code is incomplete, the
   maximum code length that was allowed to get this far is one bit) */
  if (huff !== 0) {
    //table.op[next + huff] = 64;            /* invalid code marker */
    //table.bits[next + huff] = len - drop;
    //table.val[next + huff] = 0;
    table[next + huff] = ((len - drop) << 24) | (64 << 16) |0;
  }

  /* set return parameters */
  //opts.table_index += used;
  opts.bits = root;
  return 0;
};

},{"../utils/common":292}],302:[function(require,module,exports){
'use strict';

// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

module.exports = {
  2:      'need dictionary',     /* Z_NEED_DICT       2  */
  1:      'stream end',          /* Z_STREAM_END      1  */
  0:      '',                    /* Z_OK              0  */
  '-1':   'file error',          /* Z_ERRNO         (-1) */
  '-2':   'stream error',        /* Z_STREAM_ERROR  (-2) */
  '-3':   'data error',          /* Z_DATA_ERROR    (-3) */
  '-4':   'insufficient memory', /* Z_MEM_ERROR     (-4) */
  '-5':   'buffer error',        /* Z_BUF_ERROR     (-5) */
  '-6':   'incompatible version' /* Z_VERSION_ERROR (-6) */
};

},{}],303:[function(require,module,exports){
'use strict';

// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

/* eslint-disable space-unary-ops */

var utils = require('../utils/common');

/* Public constants ==========================================================*/
/* ===========================================================================*/


//var Z_FILTERED          = 1;
//var Z_HUFFMAN_ONLY      = 2;
//var Z_RLE               = 3;
var Z_FIXED               = 4;
//var Z_DEFAULT_STRATEGY  = 0;

/* Possible values of the data_type field (though see inflate()) */
var Z_BINARY              = 0;
var Z_TEXT                = 1;
//var Z_ASCII             = 1; // = Z_TEXT
var Z_UNKNOWN             = 2;

/*============================================================================*/


function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }

// From zutil.h

var STORED_BLOCK = 0;
var STATIC_TREES = 1;
var DYN_TREES    = 2;
/* The three kinds of block type */

var MIN_MATCH    = 3;
var MAX_MATCH    = 258;
/* The minimum and maximum match lengths */

// From deflate.h
/* ===========================================================================
 * Internal compression state.
 */

var LENGTH_CODES  = 29;
/* number of length codes, not counting the special END_BLOCK code */

var LITERALS      = 256;
/* number of literal bytes 0..255 */

var L_CODES       = LITERALS + 1 + LENGTH_CODES;
/* number of Literal or Length codes, including the END_BLOCK code */

var D_CODES       = 30;
/* number of distance codes */

var BL_CODES      = 19;
/* number of codes used to transfer the bit lengths */

var HEAP_SIZE     = 2 * L_CODES + 1;
/* maximum heap size */

var MAX_BITS      = 15;
/* All codes must not exceed MAX_BITS bits */

var Buf_size      = 16;
/* size of bit buffer in bi_buf */


/* ===========================================================================
 * Constants
 */

var MAX_BL_BITS = 7;
/* Bit length codes must not exceed MAX_BL_BITS bits */

var END_BLOCK   = 256;
/* end of block literal code */

var REP_3_6     = 16;
/* repeat previous bit length 3-6 times (2 bits of repeat count) */

var REPZ_3_10   = 17;
/* repeat a zero length 3-10 times  (3 bits of repeat count) */

var REPZ_11_138 = 18;
/* repeat a zero length 11-138 times  (7 bits of repeat count) */

/* eslint-disable comma-spacing,array-bracket-spacing */
var extra_lbits =   /* extra bits for each length code */
  [0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0];

var extra_dbits =   /* extra bits for each distance code */
  [0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13];

var extra_blbits =  /* extra bits for each bit length code */
  [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7];

var bl_order =
  [16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];
/* eslint-enable comma-spacing,array-bracket-spacing */

/* The lengths of the bit length codes are sent in order of decreasing
 * probability, to avoid transmitting the lengths for unused bit length codes.
 */

/* ===========================================================================
 * Local data. These are initialized only once.
 */

// We pre-fill arrays with 0 to avoid uninitialized gaps

var DIST_CODE_LEN = 512; /* see definition of array dist_code below */

// !!!! Use flat array instead of structure, Freq = i*2, Len = i*2+1
var static_ltree  = new Array((L_CODES + 2) * 2);
zero(static_ltree);
/* The static literal tree. Since the bit lengths are imposed, there is no
 * need for the L_CODES extra codes used during heap construction. However
 * The codes 286 and 287 are needed to build a canonical tree (see _tr_init
 * below).
 */

var static_dtree  = new Array(D_CODES * 2);
zero(static_dtree);
/* The static distance tree. (Actually a trivial tree since all codes use
 * 5 bits.)
 */

var _dist_code    = new Array(DIST_CODE_LEN);
zero(_dist_code);
/* Distance codes. The first 256 values correspond to the distances
 * 3 .. 258, the last 256 values correspond to the top 8 bits of
 * the 15 bit distances.
 */

var _length_code  = new Array(MAX_MATCH - MIN_MATCH + 1);
zero(_length_code);
/* length code for each normalized match length (0 == MIN_MATCH) */

var base_length   = new Array(LENGTH_CODES);
zero(base_length);
/* First normalized length for each code (0 = MIN_MATCH) */

var base_dist     = new Array(D_CODES);
zero(base_dist);
/* First normalized distance for each code (0 = distance of 1) */


function StaticTreeDesc(static_tree, extra_bits, extra_base, elems, max_length) {

  this.static_tree  = static_tree;  /* static tree or NULL */
  this.extra_bits   = extra_bits;   /* extra bits for each code or NULL */
  this.extra_base   = extra_base;   /* base index for extra_bits */
  this.elems        = elems;        /* max number of elements in the tree */
  this.max_length   = max_length;   /* max bit length for the codes */

  // show if `static_tree` has data or dummy - needed for monomorphic objects
  this.has_stree    = static_tree && static_tree.length;
}


var static_l_desc;
var static_d_desc;
var static_bl_desc;


function TreeDesc(dyn_tree, stat_desc) {
  this.dyn_tree = dyn_tree;     /* the dynamic tree */
  this.max_code = 0;            /* largest code with non zero frequency */
  this.stat_desc = stat_desc;   /* the corresponding static tree */
}



function d_code(dist) {
  return dist < 256 ? _dist_code[dist] : _dist_code[256 + (dist >>> 7)];
}


/* ===========================================================================
 * Output a short LSB first on the stream.
 * IN assertion: there is enough room in pendingBuf.
 */
function put_short(s, w) {
//    put_byte(s, (uch)((w) & 0xff));
//    put_byte(s, (uch)((ush)(w) >> 8));
  s.pending_buf[s.pending++] = (w) & 0xff;
  s.pending_buf[s.pending++] = (w >>> 8) & 0xff;
}


/* ===========================================================================
 * Send a value on a given number of bits.
 * IN assertion: length <= 16 and value fits in length bits.
 */
function send_bits(s, value, length) {
  if (s.bi_valid > (Buf_size - length)) {
    s.bi_buf |= (value << s.bi_valid) & 0xffff;
    put_short(s, s.bi_buf);
    s.bi_buf = value >> (Buf_size - s.bi_valid);
    s.bi_valid += length - Buf_size;
  } else {
    s.bi_buf |= (value << s.bi_valid) & 0xffff;
    s.bi_valid += length;
  }
}


function send_code(s, c, tree) {
  send_bits(s, tree[c * 2]/*.Code*/, tree[c * 2 + 1]/*.Len*/);
}


/* ===========================================================================
 * Reverse the first len bits of a code, using straightforward code (a faster
 * method would use a table)
 * IN assertion: 1 <= len <= 15
 */
function bi_reverse(code, len) {
  var res = 0;
  do {
    res |= code & 1;
    code >>>= 1;
    res <<= 1;
  } while (--len > 0);
  return res >>> 1;
}


/* ===========================================================================
 * Flush the bit buffer, keeping at most 7 bits in it.
 */
function bi_flush(s) {
  if (s.bi_valid === 16) {
    put_short(s, s.bi_buf);
    s.bi_buf = 0;
    s.bi_valid = 0;

  } else if (s.bi_valid >= 8) {
    s.pending_buf[s.pending++] = s.bi_buf & 0xff;
    s.bi_buf >>= 8;
    s.bi_valid -= 8;
  }
}


/* ===========================================================================
 * Compute the optimal bit lengths for a tree and update the total bit length
 * for the current block.
 * IN assertion: the fields freq and dad are set, heap[heap_max] and
 *    above are the tree nodes sorted by increasing frequency.
 * OUT assertions: the field len is set to the optimal bit length, the
 *     array bl_count contains the frequencies for each bit length.
 *     The length opt_len is updated; static_len is also updated if stree is
 *     not null.
 */
function gen_bitlen(s, desc)
//    deflate_state *s;
//    tree_desc *desc;    /* the tree descriptor */
{
  var tree            = desc.dyn_tree;
  var max_code        = desc.max_code;
  var stree           = desc.stat_desc.static_tree;
  var has_stree       = desc.stat_desc.has_stree;
  var extra           = desc.stat_desc.extra_bits;
  var base            = desc.stat_desc.extra_base;
  var max_length      = desc.stat_desc.max_length;
  var h;              /* heap index */
  var n, m;           /* iterate over the tree elements */
  var bits;           /* bit length */
  var xbits;          /* extra bits */
  var f;              /* frequency */
  var overflow = 0;   /* number of elements with bit length too large */

  for (bits = 0; bits <= MAX_BITS; bits++) {
    s.bl_count[bits] = 0;
  }

  /* In a first pass, compute the optimal bit lengths (which may
   * overflow in the case of the bit length tree).
   */
  tree[s.heap[s.heap_max] * 2 + 1]/*.Len*/ = 0; /* root of the heap */

  for (h = s.heap_max + 1; h < HEAP_SIZE; h++) {
    n = s.heap[h];
    bits = tree[tree[n * 2 + 1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1;
    if (bits > max_length) {
      bits = max_length;
      overflow++;
    }
    tree[n * 2 + 1]/*.Len*/ = bits;
    /* We overwrite tree[n].Dad which is no longer needed */

    if (n > max_code) { continue; } /* not a leaf node */

    s.bl_count[bits]++;
    xbits = 0;
    if (n >= base) {
      xbits = extra[n - base];
    }
    f = tree[n * 2]/*.Freq*/;
    s.opt_len += f * (bits + xbits);
    if (has_stree) {
      s.static_len += f * (stree[n * 2 + 1]/*.Len*/ + xbits);
    }
  }
  if (overflow === 0) { return; }

  // Trace((stderr,"\nbit length overflow\n"));
  /* This happens for example on obj2 and pic of the Calgary corpus */

  /* Find the first bit length which could increase: */
  do {
    bits = max_length - 1;
    while (s.bl_count[bits] === 0) { bits--; }
    s.bl_count[bits]--;      /* move one leaf down the tree */
    s.bl_count[bits + 1] += 2; /* move one overflow item as its brother */
    s.bl_count[max_length]--;
    /* The brother of the overflow item also moves one step up,
     * but this does not affect bl_count[max_length]
     */
    overflow -= 2;
  } while (overflow > 0);

  /* Now recompute all bit lengths, scanning in increasing frequency.
   * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
   * lengths instead of fixing only the wrong ones. This idea is taken
   * from 'ar' written by Haruhiko Okumura.)
   */
  for (bits = max_length; bits !== 0; bits--) {
    n = s.bl_count[bits];
    while (n !== 0) {
      m = s.heap[--h];
      if (m > max_code) { continue; }
      if (tree[m * 2 + 1]/*.Len*/ !== bits) {
        // Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));
        s.opt_len += (bits - tree[m * 2 + 1]/*.Len*/) * tree[m * 2]/*.Freq*/;
        tree[m * 2 + 1]/*.Len*/ = bits;
      }
      n--;
    }
  }
}


/* ===========================================================================
 * Generate the codes for a given tree and bit counts (which need not be
 * optimal).
 * IN assertion: the array bl_count contains the bit length statistics for
 * the given tree and the field len is set for all tree elements.
 * OUT assertion: the field code is set for all tree elements of non
 *     zero code length.
 */
function gen_codes(tree, max_code, bl_count)
//    ct_data *tree;             /* the tree to decorate */
//    int max_code;              /* largest code with non zero frequency */
//    ushf *bl_count;            /* number of codes at each bit length */
{
  var next_code = new Array(MAX_BITS + 1); /* next code value for each bit length */
  var code = 0;              /* running code value */
  var bits;                  /* bit index */
  var n;                     /* code index */

  /* The distribution counts are first used to generate the code values
   * without bit reversal.
   */
  for (bits = 1; bits <= MAX_BITS; bits++) {
    next_code[bits] = code = (code + bl_count[bits - 1]) << 1;
  }
  /* Check that the bit counts in bl_count are consistent. The last code
   * must be all ones.
   */
  //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
  //        "inconsistent bit counts");
  //Tracev((stderr,"\ngen_codes: max_code %d ", max_code));

  for (n = 0;  n <= max_code; n++) {
    var len = tree[n * 2 + 1]/*.Len*/;
    if (len === 0) { continue; }
    /* Now reverse the bits */
    tree[n * 2]/*.Code*/ = bi_reverse(next_code[len]++, len);

    //Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
    //     n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
  }
}


/* ===========================================================================
 * Initialize the various 'constant' tables.
 */
function tr_static_init() {
  var n;        /* iterates over tree elements */
  var bits;     /* bit counter */
  var length;   /* length value */
  var code;     /* code value */
  var dist;     /* distance index */
  var bl_count = new Array(MAX_BITS + 1);
  /* number of codes at each bit length for an optimal tree */

  // do check in _tr_init()
  //if (static_init_done) return;

  /* For some embedded targets, global variables are not initialized: */
/*#ifdef NO_INIT_GLOBAL_POINTERS
  static_l_desc.static_tree = static_ltree;
  static_l_desc.extra_bits = extra_lbits;
  static_d_desc.static_tree = static_dtree;
  static_d_desc.extra_bits = extra_dbits;
  static_bl_desc.extra_bits = extra_blbits;
#endif*/

  /* Initialize the mapping length (0..255) -> length code (0..28) */
  length = 0;
  for (code = 0; code < LENGTH_CODES - 1; code++) {
    base_length[code] = length;
    for (n = 0; n < (1 << extra_lbits[code]); n++) {
      _length_code[length++] = code;
    }
  }
  //Assert (length == 256, "tr_static_init: length != 256");
  /* Note that the length 255 (match length 258) can be represented
   * in two different ways: code 284 + 5 bits or code 285, so we
   * overwrite length_code[255] to use the best encoding:
   */
  _length_code[length - 1] = code;

  /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
  dist = 0;
  for (code = 0; code < 16; code++) {
    base_dist[code] = dist;
    for (n = 0; n < (1 << extra_dbits[code]); n++) {
      _dist_code[dist++] = code;
    }
  }
  //Assert (dist == 256, "tr_static_init: dist != 256");
  dist >>= 7; /* from now on, all distances are divided by 128 */
  for (; code < D_CODES; code++) {
    base_dist[code] = dist << 7;
    for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) {
      _dist_code[256 + dist++] = code;
    }
  }
  //Assert (dist == 256, "tr_static_init: 256+dist != 512");

  /* Construct the codes of the static literal tree */
  for (bits = 0; bits <= MAX_BITS; bits++) {
    bl_count[bits] = 0;
  }

  n = 0;
  while (n <= 143) {
    static_ltree[n * 2 + 1]/*.Len*/ = 8;
    n++;
    bl_count[8]++;
  }
  while (n <= 255) {
    static_ltree[n * 2 + 1]/*.Len*/ = 9;
    n++;
    bl_count[9]++;
  }
  while (n <= 279) {
    static_ltree[n * 2 + 1]/*.Len*/ = 7;
    n++;
    bl_count[7]++;
  }
  while (n <= 287) {
    static_ltree[n * 2 + 1]/*.Len*/ = 8;
    n++;
    bl_count[8]++;
  }
  /* Codes 286 and 287 do not exist, but we must include them in the
   * tree construction to get a canonical Huffman tree (longest code
   * all ones)
   */
  gen_codes(static_ltree, L_CODES + 1, bl_count);

  /* The static distance tree is trivial: */
  for (n = 0; n < D_CODES; n++) {
    static_dtree[n * 2 + 1]/*.Len*/ = 5;
    static_dtree[n * 2]/*.Code*/ = bi_reverse(n, 5);
  }

  // Now data ready and we can init static trees
  static_l_desc = new StaticTreeDesc(static_ltree, extra_lbits, LITERALS + 1, L_CODES, MAX_BITS);
  static_d_desc = new StaticTreeDesc(static_dtree, extra_dbits, 0,          D_CODES, MAX_BITS);
  static_bl_desc = new StaticTreeDesc(new Array(0), extra_blbits, 0,         BL_CODES, MAX_BL_BITS);

  //static_init_done = true;
}


/* ===========================================================================
 * Initialize a new block.
 */
function init_block(s) {
  var n; /* iterates over tree elements */

  /* Initialize the trees. */
  for (n = 0; n < L_CODES;  n++) { s.dyn_ltree[n * 2]/*.Freq*/ = 0; }
  for (n = 0; n < D_CODES;  n++) { s.dyn_dtree[n * 2]/*.Freq*/ = 0; }
  for (n = 0; n < BL_CODES; n++) { s.bl_tree[n * 2]/*.Freq*/ = 0; }

  s.dyn_ltree[END_BLOCK * 2]/*.Freq*/ = 1;
  s.opt_len = s.static_len = 0;
  s.last_lit = s.matches = 0;
}


/* ===========================================================================
 * Flush the bit buffer and align the output on a byte boundary
 */
function bi_windup(s)
{
  if (s.bi_valid > 8) {
    put_short(s, s.bi_buf);
  } else if (s.bi_valid > 0) {
    //put_byte(s, (Byte)s->bi_buf);
    s.pending_buf[s.pending++] = s.bi_buf;
  }
  s.bi_buf = 0;
  s.bi_valid = 0;
}

/* ===========================================================================
 * Copy a stored block, storing first the length and its
 * one's complement if requested.
 */
function copy_block(s, buf, len, header)
//DeflateState *s;
//charf    *buf;    /* the input data */
//unsigned len;     /* its length */
//int      header;  /* true if block header must be written */
{
  bi_windup(s);        /* align on byte boundary */

  if (header) {
    put_short(s, len);
    put_short(s, ~len);
  }
//  while (len--) {
//    put_byte(s, *buf++);
//  }
  utils.arraySet(s.pending_buf, s.window, buf, len, s.pending);
  s.pending += len;
}

/* ===========================================================================
 * Compares to subtrees, using the tree depth as tie breaker when
 * the subtrees have equal frequency. This minimizes the worst case length.
 */
function smaller(tree, n, m, depth) {
  var _n2 = n * 2;
  var _m2 = m * 2;
  return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ ||
         (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m]));
}

/* ===========================================================================
 * Restore the heap property by moving down the tree starting at node k,
 * exchanging a node with the smallest of its two sons if necessary, stopping
 * when the heap property is re-established (each father smaller than its
 * two sons).
 */
function pqdownheap(s, tree, k)
//    deflate_state *s;
//    ct_data *tree;  /* the tree to restore */
//    int k;               /* node to move down */
{
  var v = s.heap[k];
  var j = k << 1;  /* left son of k */
  while (j <= s.heap_len) {
    /* Set j to the smallest of the two sons: */
    if (j < s.heap_len &&
      smaller(tree, s.heap[j + 1], s.heap[j], s.depth)) {
      j++;
    }
    /* Exit if v is smaller than both sons */
    if (smaller(tree, v, s.heap[j], s.depth)) { break; }

    /* Exchange v with the smallest son */
    s.heap[k] = s.heap[j];
    k = j;

    /* And continue down the tree, setting j to the left son of k */
    j <<= 1;
  }
  s.heap[k] = v;
}


// inlined manually
// var SMALLEST = 1;

/* ===========================================================================
 * Send the block data compressed using the given Huffman trees
 */
function compress_block(s, ltree, dtree)
//    deflate_state *s;
//    const ct_data *ltree; /* literal tree */
//    const ct_data *dtree; /* distance tree */
{
  var dist;           /* distance of matched string */
  var lc;             /* match length or unmatched char (if dist == 0) */
  var lx = 0;         /* running index in l_buf */
  var code;           /* the code to send */
  var extra;          /* number of extra bits to send */

  if (s.last_lit !== 0) {
    do {
      dist = (s.pending_buf[s.d_buf + lx * 2] << 8) | (s.pending_buf[s.d_buf + lx * 2 + 1]);
      lc = s.pending_buf[s.l_buf + lx];
      lx++;

      if (dist === 0) {
        send_code(s, lc, ltree); /* send a literal byte */
        //Tracecv(isgraph(lc), (stderr," '%c' ", lc));
      } else {
        /* Here, lc is the match length - MIN_MATCH */
        code = _length_code[lc];
        send_code(s, code + LITERALS + 1, ltree); /* send the length code */
        extra = extra_lbits[code];
        if (extra !== 0) {
          lc -= base_length[code];
          send_bits(s, lc, extra);       /* send the extra length bits */
        }
        dist--; /* dist is now the match distance - 1 */
        code = d_code(dist);
        //Assert (code < D_CODES, "bad d_code");

        send_code(s, code, dtree);       /* send the distance code */
        extra = extra_dbits[code];
        if (extra !== 0) {
          dist -= base_dist[code];
          send_bits(s, dist, extra);   /* send the extra distance bits */
        }
      } /* literal or match pair ? */

      /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */
      //Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx,
      //       "pendingBuf overflow");

    } while (lx < s.last_lit);
  }

  send_code(s, END_BLOCK, ltree);
}


/* ===========================================================================
 * Construct one Huffman tree and assigns the code bit strings and lengths.
 * Update the total bit length for the current block.
 * IN assertion: the field freq is set for all tree elements.
 * OUT assertions: the fields len and code are set to the optimal bit length
 *     and corresponding code. The length opt_len is updated; static_len is
 *     also updated if stree is not null. The field max_code is set.
 */
function build_tree(s, desc)
//    deflate_state *s;
//    tree_desc *desc; /* the tree descriptor */
{
  var tree     = desc.dyn_tree;
  var stree    = desc.stat_desc.static_tree;
  var has_stree = desc.stat_desc.has_stree;
  var elems    = desc.stat_desc.elems;
  var n, m;          /* iterate over heap elements */
  var max_code = -1; /* largest code with non zero frequency */
  var node;          /* new node being created */

  /* Construct the initial heap, with least frequent element in
   * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
   * heap[0] is not used.
   */
  s.heap_len = 0;
  s.heap_max = HEAP_SIZE;

  for (n = 0; n < elems; n++) {
    if (tree[n * 2]/*.Freq*/ !== 0) {
      s.heap[++s.heap_len] = max_code = n;
      s.depth[n] = 0;

    } else {
      tree[n * 2 + 1]/*.Len*/ = 0;
    }
  }

  /* The pkzip format requires that at least one distance code exists,
   * and that at least one bit should be sent even if there is only one
   * possible code. So to avoid special checks later on we force at least
   * two codes of non zero frequency.
   */
  while (s.heap_len < 2) {
    node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0);
    tree[node * 2]/*.Freq*/ = 1;
    s.depth[node] = 0;
    s.opt_len--;

    if (has_stree) {
      s.static_len -= stree[node * 2 + 1]/*.Len*/;
    }
    /* node is 0 or 1 so it does not have extra bits */
  }
  desc.max_code = max_code;

  /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
   * establish sub-heaps of increasing lengths:
   */
  for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); }

  /* Construct the Huffman tree by repeatedly combining the least two
   * frequent nodes.
   */
  node = elems;              /* next internal node of the tree */
  do {
    //pqremove(s, tree, n);  /* n = node of least frequency */
    /*** pqremove ***/
    n = s.heap[1/*SMALLEST*/];
    s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--];
    pqdownheap(s, tree, 1/*SMALLEST*/);
    /***/

    m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */

    s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */
    s.heap[--s.heap_max] = m;

    /* Create a new node father of n and m */
    tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/;
    s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1;
    tree[n * 2 + 1]/*.Dad*/ = tree[m * 2 + 1]/*.Dad*/ = node;

    /* and insert the new node in the heap */
    s.heap[1/*SMALLEST*/] = node++;
    pqdownheap(s, tree, 1/*SMALLEST*/);

  } while (s.heap_len >= 2);

  s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/];

  /* At this point, the fields freq and dad are set. We can now
   * generate the bit lengths.
   */
  gen_bitlen(s, desc);

  /* The field len is now set, we can generate the bit codes */
  gen_codes(tree, max_code, s.bl_count);
}


/* ===========================================================================
 * Scan a literal or distance tree to determine the frequencies of the codes
 * in the bit length tree.
 */
function scan_tree(s, tree, max_code)
//    deflate_state *s;
//    ct_data *tree;   /* the tree to be scanned */
//    int max_code;    /* and its largest code of non zero frequency */
{
  var n;                     /* iterates over all tree elements */
  var prevlen = -1;          /* last emitted length */
  var curlen;                /* length of current code */

  var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */

  var count = 0;             /* repeat count of the current code */
  var max_count = 7;         /* max repeat count */
  var min_count = 4;         /* min repeat count */

  if (nextlen === 0) {
    max_count = 138;
    min_count = 3;
  }
  tree[(max_code + 1) * 2 + 1]/*.Len*/ = 0xffff; /* guard */

  for (n = 0; n <= max_code; n++) {
    curlen = nextlen;
    nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;

    if (++count < max_count && curlen === nextlen) {
      continue;

    } else if (count < min_count) {
      s.bl_tree[curlen * 2]/*.Freq*/ += count;

    } else if (curlen !== 0) {

      if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; }
      s.bl_tree[REP_3_6 * 2]/*.Freq*/++;

    } else if (count <= 10) {
      s.bl_tree[REPZ_3_10 * 2]/*.Freq*/++;

    } else {
      s.bl_tree[REPZ_11_138 * 2]/*.Freq*/++;
    }

    count = 0;
    prevlen = curlen;

    if (nextlen === 0) {
      max_count = 138;
      min_count = 3;

    } else if (curlen === nextlen) {
      max_count = 6;
      min_count = 3;

    } else {
      max_count = 7;
      min_count = 4;
    }
  }
}


/* ===========================================================================
 * Send a literal or distance tree in compressed form, using the codes in
 * bl_tree.
 */
function send_tree(s, tree, max_code)
//    deflate_state *s;
//    ct_data *tree; /* the tree to be scanned */
//    int max_code;       /* and its largest code of non zero frequency */
{
  var n;                     /* iterates over all tree elements */
  var prevlen = -1;          /* last emitted length */
  var curlen;                /* length of current code */

  var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */

  var count = 0;             /* repeat count of the current code */
  var max_count = 7;         /* max repeat count */
  var min_count = 4;         /* min repeat count */

  /* tree[max_code+1].Len = -1; */  /* guard already set */
  if (nextlen === 0) {
    max_count = 138;
    min_count = 3;
  }

  for (n = 0; n <= max_code; n++) {
    curlen = nextlen;
    nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;

    if (++count < max_count && curlen === nextlen) {
      continue;

    } else if (count < min_count) {
      do { send_code(s, curlen, s.bl_tree); } while (--count !== 0);

    } else if (curlen !== 0) {
      if (curlen !== prevlen) {
        send_code(s, curlen, s.bl_tree);
        count--;
      }
      //Assert(count >= 3 && count <= 6, " 3_6?");
      send_code(s, REP_3_6, s.bl_tree);
      send_bits(s, count - 3, 2);

    } else if (count <= 10) {
      send_code(s, REPZ_3_10, s.bl_tree);
      send_bits(s, count - 3, 3);

    } else {
      send_code(s, REPZ_11_138, s.bl_tree);
      send_bits(s, count - 11, 7);
    }

    count = 0;
    prevlen = curlen;
    if (nextlen === 0) {
      max_count = 138;
      min_count = 3;

    } else if (curlen === nextlen) {
      max_count = 6;
      min_count = 3;

    } else {
      max_count = 7;
      min_count = 4;
    }
  }
}


/* ===========================================================================
 * Construct the Huffman tree for the bit lengths and return the index in
 * bl_order of the last bit length code to send.
 */
function build_bl_tree(s) {
  var max_blindex;  /* index of last bit length code of non zero freq */

  /* Determine the bit length frequencies for literal and distance trees */
  scan_tree(s, s.dyn_ltree, s.l_desc.max_code);
  scan_tree(s, s.dyn_dtree, s.d_desc.max_code);

  /* Build the bit length tree: */
  build_tree(s, s.bl_desc);
  /* opt_len now includes the length of the tree representations, except
   * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
   */

  /* Determine the number of bit length codes to send. The pkzip format
   * requires that at least 4 bit length codes be sent. (appnote.txt says
   * 3 but the actual value used is 4.)
   */
  for (max_blindex = BL_CODES - 1; max_blindex >= 3; max_blindex--) {
    if (s.bl_tree[bl_order[max_blindex] * 2 + 1]/*.Len*/ !== 0) {
      break;
    }
  }
  /* Update opt_len to include the bit length tree and counts */
  s.opt_len += 3 * (max_blindex + 1) + 5 + 5 + 4;
  //Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
  //        s->opt_len, s->static_len));

  return max_blindex;
}


/* ===========================================================================
 * Send the header for a block using dynamic Huffman trees: the counts, the
 * lengths of the bit length codes, the literal tree and the distance tree.
 * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
 */
function send_all_trees(s, lcodes, dcodes, blcodes)
//    deflate_state *s;
//    int lcodes, dcodes, blcodes; /* number of codes for each tree */
{
  var rank;                    /* index in bl_order */

  //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
  //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
  //        "too many codes");
  //Tracev((stderr, "\nbl counts: "));
  send_bits(s, lcodes - 257, 5); /* not +255 as stated in appnote.txt */
  send_bits(s, dcodes - 1,   5);
  send_bits(s, blcodes - 4,  4); /* not -3 as stated in appnote.txt */
  for (rank = 0; rank < blcodes; rank++) {
    //Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
    send_bits(s, s.bl_tree[bl_order[rank] * 2 + 1]/*.Len*/, 3);
  }
  //Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));

  send_tree(s, s.dyn_ltree, lcodes - 1); /* literal tree */
  //Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));

  send_tree(s, s.dyn_dtree, dcodes - 1); /* distance tree */
  //Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
}


/* ===========================================================================
 * Check if the data type is TEXT or BINARY, using the following algorithm:
 * - TEXT if the two conditions below are satisfied:
 *    a) There are no non-portable control characters belonging to the
 *       "black list" (0..6, 14..25, 28..31).
 *    b) There is at least one printable character belonging to the
 *       "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
 * - BINARY otherwise.
 * - The following partially-portable control characters form a
 *   "gray list" that is ignored in this detection algorithm:
 *   (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).
 * IN assertion: the fields Freq of dyn_ltree are set.
 */
function detect_data_type(s) {
  /* black_mask is the bit mask of black-listed bytes
   * set bits 0..6, 14..25, and 28..31
   * 0xf3ffc07f = binary 11110011111111111100000001111111
   */
  var black_mask = 0xf3ffc07f;
  var n;

  /* Check for non-textual ("black-listed") bytes. */
  for (n = 0; n <= 31; n++, black_mask >>>= 1) {
    if ((black_mask & 1) && (s.dyn_ltree[n * 2]/*.Freq*/ !== 0)) {
      return Z_BINARY;
    }
  }

  /* Check for textual ("white-listed") bytes. */
  if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 ||
      s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) {
    return Z_TEXT;
  }
  for (n = 32; n < LITERALS; n++) {
    if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) {
      return Z_TEXT;
    }
  }

  /* There are no "black-listed" or "white-listed" bytes:
   * this stream either is empty or has tolerated ("gray-listed") bytes only.
   */
  return Z_BINARY;
}


var static_init_done = false;

/* ===========================================================================
 * Initialize the tree data structures for a new zlib stream.
 */
function _tr_init(s)
{

  if (!static_init_done) {
    tr_static_init();
    static_init_done = true;
  }

  s.l_desc  = new TreeDesc(s.dyn_ltree, static_l_desc);
  s.d_desc  = new TreeDesc(s.dyn_dtree, static_d_desc);
  s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc);

  s.bi_buf = 0;
  s.bi_valid = 0;

  /* Initialize the first block of the first file: */
  init_block(s);
}


/* ===========================================================================
 * Send a stored block
 */
function _tr_stored_block(s, buf, stored_len, last)
//DeflateState *s;
//charf *buf;       /* input block */
//ulg stored_len;   /* length of input block */
//int last;         /* one if this is the last block for a file */
{
  send_bits(s, (STORED_BLOCK << 1) + (last ? 1 : 0), 3);    /* send block type */
  copy_block(s, buf, stored_len, true); /* with header */
}


/* ===========================================================================
 * Send one empty static block to give enough lookahead for inflate.
 * This takes 10 bits, of which 7 may remain in the bit buffer.
 */
function _tr_align(s) {
  send_bits(s, STATIC_TREES << 1, 3);
  send_code(s, END_BLOCK, static_ltree);
  bi_flush(s);
}


/* ===========================================================================
 * Determine the best encoding for the current block: dynamic trees, static
 * trees or store, and output the encoded block to the zip file.
 */
function _tr_flush_block(s, buf, stored_len, last)
//DeflateState *s;
//charf *buf;       /* input block, or NULL if too old */
//ulg stored_len;   /* length of input block */
//int last;         /* one if this is the last block for a file */
{
  var opt_lenb, static_lenb;  /* opt_len and static_len in bytes */
  var max_blindex = 0;        /* index of last bit length code of non zero freq */

  /* Build the Huffman trees unless a stored block is forced */
  if (s.level > 0) {

    /* Check if the file is binary or text */
    if (s.strm.data_type === Z_UNKNOWN) {
      s.strm.data_type = detect_data_type(s);
    }

    /* Construct the literal and distance trees */
    build_tree(s, s.l_desc);
    // Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
    //        s->static_len));

    build_tree(s, s.d_desc);
    // Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
    //        s->static_len));
    /* At this point, opt_len and static_len are the total bit lengths of
     * the compressed block data, excluding the tree representations.
     */

    /* Build the bit length tree for the above two trees, and get the index
     * in bl_order of the last bit length code to send.
     */
    max_blindex = build_bl_tree(s);

    /* Determine the best encoding. Compute the block lengths in bytes. */
    opt_lenb = (s.opt_len + 3 + 7) >>> 3;
    static_lenb = (s.static_len + 3 + 7) >>> 3;

    // Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
    //        opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
    //        s->last_lit));

    if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; }

  } else {
    // Assert(buf != (char*)0, "lost buf");
    opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
  }

  if ((stored_len + 4 <= opt_lenb) && (buf !== -1)) {
    /* 4: two words for the lengths */

    /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
     * Otherwise we can't have processed more than WSIZE input bytes since
     * the last block flush, because compression would have been
     * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
     * transform a block into a stored block.
     */
    _tr_stored_block(s, buf, stored_len, last);

  } else if (s.strategy === Z_FIXED || static_lenb === opt_lenb) {

    send_bits(s, (STATIC_TREES << 1) + (last ? 1 : 0), 3);
    compress_block(s, static_ltree, static_dtree);

  } else {
    send_bits(s, (DYN_TREES << 1) + (last ? 1 : 0), 3);
    send_all_trees(s, s.l_desc.max_code + 1, s.d_desc.max_code + 1, max_blindex + 1);
    compress_block(s, s.dyn_ltree, s.dyn_dtree);
  }
  // Assert (s->compressed_len == s->bits_sent, "bad compressed size");
  /* The above check is made mod 2^32, for files larger than 512 MB
   * and uLong implemented on 32 bits.
   */
  init_block(s);

  if (last) {
    bi_windup(s);
  }
  // Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
  //       s->compressed_len-7*last));
}

/* ===========================================================================
 * Save the match info and tally the frequency counts. Return true if
 * the current block must be flushed.
 */
function _tr_tally(s, dist, lc)
//    deflate_state *s;
//    unsigned dist;  /* distance of matched string */
//    unsigned lc;    /* match length-MIN_MATCH or unmatched char (if dist==0) */
{
  //var out_length, in_length, dcode;

  s.pending_buf[s.d_buf + s.last_lit * 2]     = (dist >>> 8) & 0xff;
  s.pending_buf[s.d_buf + s.last_lit * 2 + 1] = dist & 0xff;

  s.pending_buf[s.l_buf + s.last_lit] = lc & 0xff;
  s.last_lit++;

  if (dist === 0) {
    /* lc is the unmatched char */
    s.dyn_ltree[lc * 2]/*.Freq*/++;
  } else {
    s.matches++;
    /* Here, lc is the match length - MIN_MATCH */
    dist--;             /* dist = match distance - 1 */
    //Assert((ush)dist < (ush)MAX_DIST(s) &&
    //       (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
    //       (ush)d_code(dist) < (ush)D_CODES,  "_tr_tally: bad match");

    s.dyn_ltree[(_length_code[lc] + LITERALS + 1) * 2]/*.Freq*/++;
    s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++;
  }

// (!) This block is disabled in zlib defaults,
// don't enable it for binary compatibility

//#ifdef TRUNCATE_BLOCK
//  /* Try to guess if it is profitable to stop the current block here */
//  if ((s.last_lit & 0x1fff) === 0 && s.level > 2) {
//    /* Compute an upper bound for the compressed length */
//    out_length = s.last_lit*8;
//    in_length = s.strstart - s.block_start;
//
//    for (dcode = 0; dcode < D_CODES; dcode++) {
//      out_length += s.dyn_dtree[dcode*2]/*.Freq*/ * (5 + extra_dbits[dcode]);
//    }
//    out_length >>>= 3;
//    //Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ",
//    //       s->last_lit, in_length, out_length,
//    //       100L - out_length*100L/in_length));
//    if (s.matches < (s.last_lit>>1)/*int /2*/ && out_length < (in_length>>1)/*int /2*/) {
//      return true;
//    }
//  }
//#endif

  return (s.last_lit === s.lit_bufsize - 1);
  /* We avoid equality with lit_bufsize because of wraparound at 64K
   * on 16 bit machines and because stored blocks are restricted to
   * 64K-1 bytes.
   */
}

exports._tr_init  = _tr_init;
exports._tr_stored_block = _tr_stored_block;
exports._tr_flush_block  = _tr_flush_block;
exports._tr_tally = _tr_tally;
exports._tr_align = _tr_align;

},{"../utils/common":292}],304:[function(require,module,exports){
'use strict';

// (C) 1995-2013 Jean-loup Gailly and Mark Adler
// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//   claim that you wrote the original software. If you use this software
//   in a product, an acknowledgment in the product documentation would be
//   appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//   misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.

function ZStream() {
  /* next input byte */
  this.input = null; // JS specific, because we have no pointers
  this.next_in = 0;
  /* number of bytes available at input */
  this.avail_in = 0;
  /* total number of input bytes read so far */
  this.total_in = 0;
  /* next output byte should be put there */
  this.output = null; // JS specific, because we have no pointers
  this.next_out = 0;
  /* remaining free space at output */
  this.avail_out = 0;
  /* total number of bytes output so far */
  this.total_out = 0;
  /* last error message, NULL if no error */
  this.msg = ''/*Z_NULL*/;
  /* not visible by applications */
  this.state = null;
  /* best guess about the data type: binary or text */
  this.data_type = 2/*Z_UNKNOWN*/;
  /* adler32 value of the uncompressed data */
  this.adler = 0;
}

module.exports = ZStream;

},{}],305:[function(require,module,exports){
module.exports={"2.16.840.1.101.3.4.1.1": "aes-128-ecb",
"2.16.840.1.101.3.4.1.2": "aes-128-cbc",
"2.16.840.1.101.3.4.1.3": "aes-128-ofb",
"2.16.840.1.101.3.4.1.4": "aes-128-cfb",
"2.16.840.1.101.3.4.1.21": "aes-192-ecb",
"2.16.840.1.101.3.4.1.22": "aes-192-cbc",
"2.16.840.1.101.3.4.1.23": "aes-192-ofb",
"2.16.840.1.101.3.4.1.24": "aes-192-cfb",
"2.16.840.1.101.3.4.1.41": "aes-256-ecb",
"2.16.840.1.101.3.4.1.42": "aes-256-cbc",
"2.16.840.1.101.3.4.1.43": "aes-256-ofb",
"2.16.840.1.101.3.4.1.44": "aes-256-cfb"
}
},{}],306:[function(require,module,exports){
// from https://github.com/indutny/self-signed/blob/gh-pages/lib/asn1.js
// Fedor, you are amazing.
'use strict'

var asn1 = require('asn1.js')

exports.certificate = require('./certificate')

var RSAPrivateKey = asn1.define('RSAPrivateKey', function () {
  this.seq().obj(
    this.key('version').int(),
    this.key('modulus').int(),
    this.key('publicExponent').int(),
    this.key('privateExponent').int(),
    this.key('prime1').int(),
    this.key('prime2').int(),
    this.key('exponent1').int(),
    this.key('exponent2').int(),
    this.key('coefficient').int()
  )
})
exports.RSAPrivateKey = RSAPrivateKey

var RSAPublicKey = asn1.define('RSAPublicKey', function () {
  this.seq().obj(
    this.key('modulus').int(),
    this.key('publicExponent').int()
  )
})
exports.RSAPublicKey = RSAPublicKey

var PublicKey = asn1.define('SubjectPublicKeyInfo', function () {
  this.seq().obj(
    this.key('algorithm').use(AlgorithmIdentifier),
    this.key('subjectPublicKey').bitstr()
  )
})
exports.PublicKey = PublicKey

var AlgorithmIdentifier = asn1.define('AlgorithmIdentifier', function () {
  this.seq().obj(
    this.key('algorithm').objid(),
    this.key('none').null_().optional(),
    this.key('curve').objid().optional(),
    this.key('params').seq().obj(
      this.key('p').int(),
      this.key('q').int(),
      this.key('g').int()
    ).optional()
  )
})

var PrivateKeyInfo = asn1.define('PrivateKeyInfo', function () {
  this.seq().obj(
    this.key('version').int(),
    this.key('algorithm').use(AlgorithmIdentifier),
    this.key('subjectPrivateKey').octstr()
  )
})
exports.PrivateKey = PrivateKeyInfo
var EncryptedPrivateKeyInfo = asn1.define('EncryptedPrivateKeyInfo', function () {
  this.seq().obj(
    this.key('algorithm').seq().obj(
      this.key('id').objid(),
      this.key('decrypt').seq().obj(
        this.key('kde').seq().obj(
          this.key('id').objid(),
          this.key('kdeparams').seq().obj(
            this.key('salt').octstr(),
            this.key('iters').int()
          )
        ),
        this.key('cipher').seq().obj(
          this.key('algo').objid(),
          this.key('iv').octstr()
        )
      )
    ),
    this.key('subjectPrivateKey').octstr()
  )
})

exports.EncryptedPrivateKey = EncryptedPrivateKeyInfo

var DSAPrivateKey = asn1.define('DSAPrivateKey', function () {
  this.seq().obj(
    this.key('version').int(),
    this.key('p').int(),
    this.key('q').int(),
    this.key('g').int(),
    this.key('pub_key').int(),
    this.key('priv_key').int()
  )
})
exports.DSAPrivateKey = DSAPrivateKey

exports.DSAparam = asn1.define('DSAparam', function () {
  this.int()
})

var ECPrivateKey = asn1.define('ECPrivateKey', function () {
  this.seq().obj(
    this.key('version').int(),
    this.key('privateKey').octstr(),
    this.key('parameters').optional().explicit(0).use(ECParameters),
    this.key('publicKey').optional().explicit(1).bitstr()
  )
})
exports.ECPrivateKey = ECPrivateKey

var ECParameters = asn1.define('ECParameters', function () {
  this.choice({
    namedCurve: this.objid()
  })
})

exports.signature = asn1.define('signature', function () {
  this.seq().obj(
    this.key('r').int(),
    this.key('s').int()
  )
})

},{"./certificate":307,"asn1.js":121}],307:[function(require,module,exports){
// from https://github.com/Rantanen/node-dtls/blob/25a7dc861bda38cfeac93a723500eea4f0ac2e86/Certificate.js
// thanks to @Rantanen

'use strict'

var asn = require('asn1.js')

var Time = asn.define('Time', function () {
  this.choice({
    utcTime: this.utctime(),
    generalTime: this.gentime()
  })
})

var AttributeTypeValue = asn.define('AttributeTypeValue', function () {
  this.seq().obj(
    this.key('type').objid(),
    this.key('value').any()
  )
})

var AlgorithmIdentifier = asn.define('AlgorithmIdentifier', function () {
  this.seq().obj(
    this.key('algorithm').objid(),
    this.key('parameters').optional(),
    this.key('curve').objid().optional()
  )
})

var SubjectPublicKeyInfo = asn.define('SubjectPublicKeyInfo', function () {
  this.seq().obj(
    this.key('algorithm').use(AlgorithmIdentifier),
    this.key('subjectPublicKey').bitstr()
  )
})

var RelativeDistinguishedName = asn.define('RelativeDistinguishedName', function () {
  this.setof(AttributeTypeValue)
})

var RDNSequence = asn.define('RDNSequence', function () {
  this.seqof(RelativeDistinguishedName)
})

var Name = asn.define('Name', function () {
  this.choice({
    rdnSequence: this.use(RDNSequence)
  })
})

var Validity = asn.define('Validity', function () {
  this.seq().obj(
    this.key('notBefore').use(Time),
    this.key('notAfter').use(Time)
  )
})

var Extension = asn.define('Extension', function () {
  this.seq().obj(
    this.key('extnID').objid(),
    this.key('critical').bool().def(false),
    this.key('extnValue').octstr()
  )
})

var TBSCertificate = asn.define('TBSCertificate', function () {
  this.seq().obj(
    this.key('version').explicit(0).int().optional(),
    this.key('serialNumber').int(),
    this.key('signature').use(AlgorithmIdentifier),
    this.key('issuer').use(Name),
    this.key('validity').use(Validity),
    this.key('subject').use(Name),
    this.key('subjectPublicKeyInfo').use(SubjectPublicKeyInfo),
    this.key('issuerUniqueID').implicit(1).bitstr().optional(),
    this.key('subjectUniqueID').implicit(2).bitstr().optional(),
    this.key('extensions').explicit(3).seqof(Extension).optional()
  )
})

var X509Certificate = asn.define('X509Certificate', function () {
  this.seq().obj(
    this.key('tbsCertificate').use(TBSCertificate),
    this.key('signatureAlgorithm').use(AlgorithmIdentifier),
    this.key('signatureValue').bitstr()
  )
})

module.exports = X509Certificate

},{"asn1.js":121}],308:[function(require,module,exports){
// adapted from https://github.com/apatil/pemstrip
var findProc = /Proc-Type: 4,ENCRYPTED[\n\r]+DEK-Info: AES-((?:128)|(?:192)|(?:256))-CBC,([0-9A-H]+)[\n\r]+([0-9A-z\n\r\+\/\=]+)[\n\r]+/m
var startRegex = /^-----BEGIN ((?:.*? KEY)|CERTIFICATE)-----/m
var fullRegex = /^-----BEGIN ((?:.*? KEY)|CERTIFICATE)-----([0-9A-z\n\r\+\/\=]+)-----END \1-----$/m
var evp = require('evp_bytestokey')
var ciphers = require('browserify-aes')
var Buffer = require('safe-buffer').Buffer
module.exports = function (okey, password) {
  var key = okey.toString()
  var match = key.match(findProc)
  var decrypted
  if (!match) {
    var match2 = key.match(fullRegex)
    decrypted = new Buffer(match2[2].replace(/[\r\n]/g, ''), 'base64')
  } else {
    var suite = 'aes' + match[1]
    var iv = Buffer.from(match[2], 'hex')
    var cipherText = Buffer.from(match[3].replace(/[\r\n]/g, ''), 'base64')
    var cipherKey = evp(password, iv.slice(0, 8), parseInt(match[1], 10)).key
    var out = []
    var cipher = ciphers.createDecipheriv(suite, cipherKey, iv)
    out.push(cipher.update(cipherText))
    out.push(cipher.final())
    decrypted = Buffer.concat(out)
  }
  var tag = key.match(startRegex)[1]
  return {
    tag: tag,
    data: decrypted
  }
}

},{"browserify-aes":141,"evp_bytestokey":206,"safe-buffer":326}],309:[function(require,module,exports){
var asn1 = require('./asn1')
var aesid = require('./aesid.json')
var fixProc = require('./fixProc')
var ciphers = require('browserify-aes')
var compat = require('pbkdf2')
var Buffer = require('safe-buffer').Buffer
module.exports = parseKeys

function parseKeys (buffer) {
  var password
  if (typeof buffer === 'object' && !Buffer.isBuffer(buffer)) {
    password = buffer.passphrase
    buffer = buffer.key
  }
  if (typeof buffer === 'string') {
    buffer = Buffer.from(buffer)
  }

  var stripped = fixProc(buffer, password)

  var type = stripped.tag
  var data = stripped.data
  var subtype, ndata
  switch (type) {
    case 'CERTIFICATE':
      ndata = asn1.certificate.decode(data, 'der').tbsCertificate.subjectPublicKeyInfo
      // falls through
    case 'PUBLIC KEY':
      if (!ndata) {
        ndata = asn1.PublicKey.decode(data, 'der')
      }
      subtype = ndata.algorithm.algorithm.join('.')
      switch (subtype) {
        case '1.2.840.113549.1.1.1':
          return asn1.RSAPublicKey.decode(ndata.subjectPublicKey.data, 'der')
        case '1.2.840.10045.2.1':
          ndata.subjectPrivateKey = ndata.subjectPublicKey
          return {
            type: 'ec',
            data: ndata
          }
        case '1.2.840.10040.4.1':
          ndata.algorithm.params.pub_key = asn1.DSAparam.decode(ndata.subjectPublicKey.data, 'der')
          return {
            type: 'dsa',
            data: ndata.algorithm.params
          }
        default: throw new Error('unknown key id ' + subtype)
      }
      throw new Error('unknown key type ' + type)
    case 'ENCRYPTED PRIVATE KEY':
      data = asn1.EncryptedPrivateKey.decode(data, 'der')
      data = decrypt(data, password)
      // falls through
    case 'PRIVATE KEY':
      ndata = asn1.PrivateKey.decode(data, 'der')
      subtype = ndata.algorithm.algorithm.join('.')
      switch (subtype) {
        case '1.2.840.113549.1.1.1':
          return asn1.RSAPrivateKey.decode(ndata.subjectPrivateKey, 'der')
        case '1.2.840.10045.2.1':
          return {
            curve: ndata.algorithm.curve,
            privateKey: asn1.ECPrivateKey.decode(ndata.subjectPrivateKey, 'der').privateKey
          }
        case '1.2.840.10040.4.1':
          ndata.algorithm.params.priv_key = asn1.DSAparam.decode(ndata.subjectPrivateKey, 'der')
          return {
            type: 'dsa',
            params: ndata.algorithm.params
          }
        default: throw new Error('unknown key id ' + subtype)
      }
      throw new Error('unknown key type ' + type)
    case 'RSA PUBLIC KEY':
      return asn1.RSAPublicKey.decode(data, 'der')
    case 'RSA PRIVATE KEY':
      return asn1.RSAPrivateKey.decode(data, 'der')
    case 'DSA PRIVATE KEY':
      return {
        type: 'dsa',
        params: asn1.DSAPrivateKey.decode(data, 'der')
      }
    case 'EC PRIVATE KEY':
      data = asn1.ECPrivateKey.decode(data, 'der')
      return {
        curve: data.parameters.value,
        privateKey: data.privateKey
      }
    default: throw new Error('unknown key type ' + type)
  }
}
parseKeys.signature = asn1.signature
function decrypt (data, password) {
  var salt = data.algorithm.decrypt.kde.kdeparams.salt
  var iters = parseInt(data.algorithm.decrypt.kde.kdeparams.iters.toString(), 10)
  var algo = aesid[data.algorithm.decrypt.cipher.algo.join('.')]
  var iv = data.algorithm.decrypt.cipher.iv
  var cipherText = data.subjectPrivateKey
  var keylen = parseInt(algo.split('-')[1], 10) / 8
  var key = compat.pbkdf2Sync(password, salt, iters, keylen, 'sha1')
  var cipher = ciphers.createDecipheriv(algo, key, iv)
  var out = []
  out.push(cipher.update(cipherText))
  out.push(cipher.final())
  return Buffer.concat(out)
}

},{"./aesid.json":305,"./asn1":306,"./fixProc":308,"browserify-aes":141,"pbkdf2":310,"safe-buffer":326}],310:[function(require,module,exports){
exports.pbkdf2 = require('./lib/async')
exports.pbkdf2Sync = require('./lib/sync')

},{"./lib/async":311,"./lib/sync":314}],311:[function(require,module,exports){
(function (process,global){
var checkParameters = require('./precondition')
var defaultEncoding = require('./default-encoding')
var sync = require('./sync')
var Buffer = require('safe-buffer').Buffer

var ZERO_BUF
var subtle = global.crypto && global.crypto.subtle
var toBrowser = {
  'sha': 'SHA-1',
  'sha-1': 'SHA-1',
  'sha1': 'SHA-1',
  'sha256': 'SHA-256',
  'sha-256': 'SHA-256',
  'sha384': 'SHA-384',
  'sha-384': 'SHA-384',
  'sha-512': 'SHA-512',
  'sha512': 'SHA-512'
}
var checks = []
function checkNative (algo) {
  if (global.process && !global.process.browser) {
    return Promise.resolve(false)
  }
  if (!subtle || !subtle.importKey || !subtle.deriveBits) {
    return Promise.resolve(false)
  }
  if (checks[algo] !== undefined) {
    return checks[algo]
  }
  ZERO_BUF = ZERO_BUF || Buffer.alloc(8)
  var prom = browserPbkdf2(ZERO_BUF, ZERO_BUF, 10, 128, algo)
    .then(function () {
      return true
    }).catch(function () {
      return false
    })
  checks[algo] = prom
  return prom
}

function browserPbkdf2 (password, salt, iterations, length, algo) {
  return subtle.importKey(
    'raw', password, {name: 'PBKDF2'}, false, ['deriveBits']
  ).then(function (key) {
    return subtle.deriveBits({
      name: 'PBKDF2',
      salt: salt,
      iterations: iterations,
      hash: {
        name: algo
      }
    }, key, length << 3)
  }).then(function (res) {
    return Buffer.from(res)
  })
}

function resolvePromise (promise, callback) {
  promise.then(function (out) {
    process.nextTick(function () {
      callback(null, out)
    })
  }, function (e) {
    process.nextTick(function () {
      callback(e)
    })
  })
}
module.exports = function (password, salt, iterations, keylen, digest, callback) {
  if (typeof digest === 'function') {
    callback = digest
    digest = undefined
  }

  digest = digest || 'sha1'
  var algo = toBrowser[digest.toLowerCase()]

  if (!algo || typeof global.Promise !== 'function') {
    return process.nextTick(function () {
      var out
      try {
        out = sync(password, salt, iterations, keylen, digest)
      } catch (e) {
        return callback(e)
      }
      callback(null, out)
    })
  }

  checkParameters(password, salt, iterations, keylen)
  if (typeof callback !== 'function') throw new Error('No callback provided to pbkdf2')
  if (!Buffer.isBuffer(password)) password = Buffer.from(password, defaultEncoding)
  if (!Buffer.isBuffer(salt)) salt = Buffer.from(salt, defaultEncoding)

  resolvePromise(checkNative(algo).then(function (resp) {
    if (resp) return browserPbkdf2(password, salt, iterations, keylen, algo)

    return sync(password, salt, iterations, keylen, digest)
  }), callback)
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./default-encoding":312,"./precondition":313,"./sync":314,"_process":316,"safe-buffer":326}],312:[function(require,module,exports){
(function (process){
var defaultEncoding
/* istanbul ignore next */
if (process.browser) {
  defaultEncoding = 'utf-8'
} else {
  var pVersionMajor = parseInt(process.version.split('.')[0].slice(1), 10)

  defaultEncoding = pVersionMajor >= 6 ? 'utf-8' : 'binary'
}
module.exports = defaultEncoding

}).call(this,require('_process'))
},{"_process":316}],313:[function(require,module,exports){
(function (Buffer){
var MAX_ALLOC = Math.pow(2, 30) - 1 // default in iojs

function checkBuffer (buf, name) {
  if (typeof buf !== 'string' && !Buffer.isBuffer(buf)) {
    throw new TypeError(name + ' must be a buffer or string')
  }
}

module.exports = function (password, salt, iterations, keylen) {
  checkBuffer(password, 'Password')
  checkBuffer(salt, 'Salt')

  if (typeof iterations !== 'number') {
    throw new TypeError('Iterations not a number')
  }

  if (iterations < 0) {
    throw new TypeError('Bad iterations')
  }

  if (typeof keylen !== 'number') {
    throw new TypeError('Key length not a number')
  }

  if (keylen < 0 || keylen > MAX_ALLOC || keylen !== keylen) { /* eslint no-self-compare: 0 */
    throw new TypeError('Bad key length')
  }
}

}).call(this,{"isBuffer":require("../../is-buffer/index.js")})
},{"../../is-buffer/index.js":246}],314:[function(require,module,exports){
var md5 = require('create-hash/md5')
var RIPEMD160 = require('ripemd160')
var sha = require('sha.js')

var checkParameters = require('./precondition')
var defaultEncoding = require('./default-encoding')
var Buffer = require('safe-buffer').Buffer
var ZEROS = Buffer.alloc(128)
var sizes = {
  md5: 16,
  sha1: 20,
  sha224: 28,
  sha256: 32,
  sha384: 48,
  sha512: 64,
  rmd160: 20,
  ripemd160: 20
}

function Hmac (alg, key, saltLen) {
  var hash = getDigest(alg)
  var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64

  if (key.length > blocksize) {
    key = hash(key)
  } else if (key.length < blocksize) {
    key = Buffer.concat([key, ZEROS], blocksize)
  }

  var ipad = Buffer.allocUnsafe(blocksize + sizes[alg])
  var opad = Buffer.allocUnsafe(blocksize + sizes[alg])
  for (var i = 0; i < blocksize; i++) {
    ipad[i] = key[i] ^ 0x36
    opad[i] = key[i] ^ 0x5C
  }

  var ipad1 = Buffer.allocUnsafe(blocksize + saltLen + 4)
  ipad.copy(ipad1, 0, 0, blocksize)
  this.ipad1 = ipad1
  this.ipad2 = ipad
  this.opad = opad
  this.alg = alg
  this.blocksize = blocksize
  this.hash = hash
  this.size = sizes[alg]
}

Hmac.prototype.run = function (data, ipad) {
  data.copy(ipad, this.blocksize)
  var h = this.hash(ipad)
  h.copy(this.opad, this.blocksize)
  return this.hash(this.opad)
}

function getDigest (alg) {
  function shaFunc (data) {
    return sha(alg).update(data).digest()
  }
  function rmd160Func (data) {
    return new RIPEMD160().update(data).digest()
  }

  if (alg === 'rmd160' || alg === 'ripemd160') return rmd160Func
  if (alg === 'md5') return md5
  return shaFunc
}

function pbkdf2 (password, salt, iterations, keylen, digest) {
  checkParameters(password, salt, iterations, keylen)

  if (!Buffer.isBuffer(password)) password = Buffer.from(password, defaultEncoding)
  if (!Buffer.isBuffer(salt)) salt = Buffer.from(salt, defaultEncoding)

  digest = digest || 'sha1'

  var hmac = new Hmac(digest, password, salt.length)

  var DK = Buffer.allocUnsafe(keylen)
  var block1 = Buffer.allocUnsafe(salt.length + 4)
  salt.copy(block1, 0, 0, salt.length)

  var destPos = 0
  var hLen = sizes[digest]
  var l = Math.ceil(keylen / hLen)

  for (var i = 1; i <= l; i++) {
    block1.writeUInt32BE(i, salt.length)

    var T = hmac.run(block1, hmac.ipad1)
    var U = T

    for (var j = 1; j < iterations; j++) {
      U = hmac.run(U, hmac.ipad2)
      for (var k = 0; k < hLen; k++) T[k] ^= U[k]
    }

    T.copy(DK, destPos)
    destPos += hLen
  }

  return DK
}

module.exports = pbkdf2

},{"./default-encoding":312,"./precondition":313,"create-hash/md5":173,"ripemd160":325,"safe-buffer":326,"sha.js":330}],315:[function(require,module,exports){
(function (process){
'use strict';

if (typeof process === 'undefined' ||
    !process.version ||
    process.version.indexOf('v0.') === 0 ||
    process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
  module.exports = { nextTick: nextTick };
} else {
  module.exports = process
}

function nextTick(fn, arg1, arg2, arg3) {
  if (typeof fn !== 'function') {
    throw new TypeError('"callback" argument must be a function');
  }
  var len = arguments.length;
  var args, i;
  switch (len) {
  case 0:
  case 1:
    return process.nextTick(fn);
  case 2:
    return process.nextTick(function afterTickOne() {
      fn.call(null, arg1);
    });
  case 3:
    return process.nextTick(function afterTickTwo() {
      fn.call(null, arg1, arg2);
    });
  case 4:
    return process.nextTick(function afterTickThree() {
      fn.call(null, arg1, arg2, arg3);
    });
  default:
    args = new Array(len - 1);
    i = 0;
    while (i < args.length) {
      args[i++] = arguments[i];
    }
    return process.nextTick(function afterTick() {
      fn.apply(null, args);
    });
  }
}


}).call(this,require('_process'))
},{"_process":316}],316:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;

process.listeners = function (name) { return [] }

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}],317:[function(require,module,exports){
exports.publicEncrypt = require('./publicEncrypt')
exports.privateDecrypt = require('./privateDecrypt')

exports.privateEncrypt = function privateEncrypt (key, buf) {
  return exports.publicEncrypt(key, buf, true)
}

exports.publicDecrypt = function publicDecrypt (key, buf) {
  return exports.privateDecrypt(key, buf, true)
}

},{"./privateDecrypt":319,"./publicEncrypt":320}],318:[function(require,module,exports){
var createHash = require('create-hash')
var Buffer = require('safe-buffer').Buffer

module.exports = function (seed, len) {
  var t = Buffer.alloc(0)
  var i = 0
  var c
  while (t.length < len) {
    c = i2ops(i++)
    t = Buffer.concat([t, createHash('sha1').update(seed).update(c).digest()])
  }
  return t.slice(0, len)
}

function i2ops (c) {
  var out = Buffer.allocUnsafe(4)
  out.writeUInt32BE(c, 0)
  return out
}

},{"create-hash":172,"safe-buffer":326}],319:[function(require,module,exports){
var parseKeys = require('parse-asn1')
var mgf = require('./mgf')
var xor = require('./xor')
var BN = require('bn.js')
var crt = require('browserify-rsa')
var createHash = require('create-hash')
var withPublic = require('./withPublic')
var Buffer = require('safe-buffer').Buffer

module.exports = function privateDecrypt (privateKey, enc, reverse) {
  var padding
  if (privateKey.padding) {
    padding = privateKey.padding
  } else if (reverse) {
    padding = 1
  } else {
    padding = 4
  }

  var key = parseKeys(privateKey)
  var k = key.modulus.byteLength()
  if (enc.length > k || new BN(enc).cmp(key.modulus) >= 0) {
    throw new Error('decryption error')
  }
  var msg
  if (reverse) {
    msg = withPublic(new BN(enc), key)
  } else {
    msg = crt(enc, key)
  }
  var zBuffer = Buffer.alloc(k - msg.length)
  msg = Buffer.concat([zBuffer, msg], k)
  if (padding === 4) {
    return oaep(key, msg)
  } else if (padding === 1) {
    return pkcs1(key, msg, reverse)
  } else if (padding === 3) {
    return msg
  } else {
    throw new Error('unknown padding')
  }
}

function oaep (key, msg) {
  var k = key.modulus.byteLength()
  var iHash = createHash('sha1').update(Buffer.alloc(0)).digest()
  var hLen = iHash.length
  if (msg[0] !== 0) {
    throw new Error('decryption error')
  }
  var maskedSeed = msg.slice(1, hLen + 1)
  var maskedDb = msg.slice(hLen + 1)
  var seed = xor(maskedSeed, mgf(maskedDb, hLen))
  var db = xor(maskedDb, mgf(seed, k - hLen - 1))
  if (compare(iHash, db.slice(0, hLen))) {
    throw new Error('decryption error')
  }
  var i = hLen
  while (db[i] === 0) {
    i++
  }
  if (db[i++] !== 1) {
    throw new Error('decryption error')
  }
  return db.slice(i)
}

function pkcs1 (key, msg, reverse) {
  var p1 = msg.slice(0, 2)
  var i = 2
  var status = 0
  while (msg[i++] !== 0) {
    if (i >= msg.length) {
      status++
      break
    }
  }
  var ps = msg.slice(2, i - 1)

  if ((p1.toString('hex') !== '0002' && !reverse) || (p1.toString('hex') !== '0001' && reverse)) {
    status++
  }
  if (ps.length < 8) {
    status++
  }
  if (status) {
    throw new Error('decryption error')
  }
  return msg.slice(i)
}
function compare (a, b) {
  a = Buffer.from(a)
  b = Buffer.from(b)
  var dif = 0
  var len = a.length
  if (a.length !== b.length) {
    dif++
    len = Math.min(a.length, b.length)
  }
  var i = -1
  while (++i < len) {
    dif += (a[i] ^ b[i])
  }
  return dif
}

},{"./mgf":318,"./withPublic":321,"./xor":322,"bn.js":136,"browserify-rsa":159,"create-hash":172,"parse-asn1":309,"safe-buffer":326}],320:[function(require,module,exports){
var parseKeys = require('parse-asn1')
var randomBytes = require('randombytes')
var createHash = require('create-hash')
var mgf = require('./mgf')
var xor = require('./xor')
var BN = require('bn.js')
var withPublic = require('./withPublic')
var crt = require('browserify-rsa')
var Buffer = require('safe-buffer').Buffer

module.exports = function publicEncrypt (publicKey, msg, reverse) {
  var padding
  if (publicKey.padding) {
    padding = publicKey.padding
  } else if (reverse) {
    padding = 1
  } else {
    padding = 4
  }
  var key = parseKeys(publicKey)
  var paddedMsg
  if (padding === 4) {
    paddedMsg = oaep(key, msg)
  } else if (padding === 1) {
    paddedMsg = pkcs1(key, msg, reverse)
  } else if (padding === 3) {
    paddedMsg = new BN(msg)
    if (paddedMsg.cmp(key.modulus) >= 0) {
      throw new Error('data too long for modulus')
    }
  } else {
    throw new Error('unknown padding')
  }
  if (reverse) {
    return crt(paddedMsg, key)
  } else {
    return withPublic(paddedMsg, key)
  }
}

function oaep (key, msg) {
  var k = key.modulus.byteLength()
  var mLen = msg.length
  var iHash = createHash('sha1').update(Buffer.alloc(0)).digest()
  var hLen = iHash.length
  var hLen2 = 2 * hLen
  if (mLen > k - hLen2 - 2) {
    throw new Error('message too long')
  }
  var ps = Buffer.alloc(k - mLen - hLen2 - 2)
  var dblen = k - hLen - 1
  var seed = randomBytes(hLen)
  var maskedDb = xor(Buffer.concat([iHash, ps, Buffer.alloc(1, 1), msg], dblen), mgf(seed, dblen))
  var maskedSeed = xor(seed, mgf(maskedDb, hLen))
  return new BN(Buffer.concat([Buffer.alloc(1), maskedSeed, maskedDb], k))
}
function pkcs1 (key, msg, reverse) {
  var mLen = msg.length
  var k = key.modulus.byteLength()
  if (mLen > k - 11) {
    throw new Error('message too long')
  }
  var ps
  if (reverse) {
    ps = Buffer.alloc(k - mLen - 3, 0xff)
  } else {
    ps = nonZero(k - mLen - 3)
  }
  return new BN(Buffer.concat([Buffer.from([0, reverse ? 1 : 2]), ps, Buffer.alloc(1), msg], k))
}
function nonZero (len) {
  var out = Buffer.allocUnsafe(len)
  var i = 0
  var cache = randomBytes(len * 2)
  var cur = 0
  var num
  while (i < len) {
    if (cur === cache.length) {
      cache = randomBytes(len * 2)
      cur = 0
    }
    num = cache[cur++]
    if (num) {
      out[i++] = num
    }
  }
  return out
}

},{"./mgf":318,"./withPublic":321,"./xor":322,"bn.js":136,"browserify-rsa":159,"create-hash":172,"parse-asn1":309,"randombytes":323,"safe-buffer":326}],321:[function(require,module,exports){
var BN = require('bn.js')
var Buffer = require('safe-buffer').Buffer

function withPublic (paddedMsg, key) {
  return Buffer.from(paddedMsg
    .toRed(BN.mont(key.modulus))
    .redPow(new BN(key.publicExponent))
    .fromRed()
    .toArray())
}

module.exports = withPublic

},{"bn.js":136,"safe-buffer":326}],322:[function(require,module,exports){
module.exports = function xor (a, b) {
  var len = a.length
  var i = -1
  while (++i < len) {
    a[i] ^= b[i]
  }
  return a
}

},{}],323:[function(require,module,exports){
(function (process,global){
'use strict'

// limit of Crypto.getRandomValues()
// https://developer.mozilla.org/en-US/docs/Web/API/Crypto/getRandomValues
var MAX_BYTES = 65536

// Node supports requesting up to this number of bytes
// https://github.com/nodejs/node/blob/master/lib/internal/crypto/random.js#L48
var MAX_UINT32 = 4294967295

function oldBrowser () {
  throw new Error('Secure random number generation is not supported by this browser.\nUse Chrome, Firefox or Internet Explorer 11')
}

var Buffer = require('safe-buffer').Buffer
var crypto = global.crypto || global.msCrypto

if (crypto && crypto.getRandomValues) {
  module.exports = randomBytes
} else {
  module.exports = oldBrowser
}

function randomBytes (size, cb) {
  // phantomjs needs to throw
  if (size > MAX_UINT32) throw new RangeError('requested too many random bytes')

  var bytes = Buffer.allocUnsafe(size)

  if (size > 0) {  // getRandomValues fails on IE if size == 0
    if (size > MAX_BYTES) { // this is the max bytes crypto.getRandomValues
      // can do at once see https://developer.mozilla.org/en-US/docs/Web/API/window.crypto.getRandomValues
      for (var generated = 0; generated < size; generated += MAX_BYTES) {
        // buffer.slice automatically checks if the end is past the end of
        // the buffer so we don't have to here
        crypto.getRandomValues(bytes.slice(generated, generated + MAX_BYTES))
      }
    } else {
      crypto.getRandomValues(bytes)
    }
  }

  if (typeof cb === 'function') {
    return process.nextTick(function () {
      cb(null, bytes)
    })
  }

  return bytes
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"_process":316,"safe-buffer":326}],324:[function(require,module,exports){
(function (process,global){
'use strict'

function oldBrowser () {
  throw new Error('secure random number generation not supported by this browser\nuse chrome, FireFox or Internet Explorer 11')
}
var safeBuffer = require('safe-buffer')
var randombytes = require('randombytes')
var Buffer = safeBuffer.Buffer
var kBufferMaxLength = safeBuffer.kMaxLength
var crypto = global.crypto || global.msCrypto
var kMaxUint32 = Math.pow(2, 32) - 1
function assertOffset (offset, length) {
  if (typeof offset !== 'number' || offset !== offset) { // eslint-disable-line no-self-compare
    throw new TypeError('offset must be a number')
  }

  if (offset > kMaxUint32 || offset < 0) {
    throw new TypeError('offset must be a uint32')
  }

  if (offset > kBufferMaxLength || offset > length) {
    throw new RangeError('offset out of range')
  }
}

function assertSize (size, offset, length) {
  if (typeof size !== 'number' || size !== size) { // eslint-disable-line no-self-compare
    throw new TypeError('size must be a number')
  }

  if (size > kMaxUint32 || size < 0) {
    throw new TypeError('size must be a uint32')
  }

  if (size + offset > length || size > kBufferMaxLength) {
    throw new RangeError('buffer too small')
  }
}
if ((crypto && crypto.getRandomValues) || !process.browser) {
  exports.randomFill = randomFill
  exports.randomFillSync = randomFillSync
} else {
  exports.randomFill = oldBrowser
  exports.randomFillSync = oldBrowser
}
function randomFill (buf, offset, size, cb) {
  if (!Buffer.isBuffer(buf) && !(buf instanceof global.Uint8Array)) {
    throw new TypeError('"buf" argument must be a Buffer or Uint8Array')
  }

  if (typeof offset === 'function') {
    cb = offset
    offset = 0
    size = buf.length
  } else if (typeof size === 'function') {
    cb = size
    size = buf.length - offset
  } else if (typeof cb !== 'function') {
    throw new TypeError('"cb" argument must be a function')
  }
  assertOffset(offset, buf.length)
  assertSize(size, offset, buf.length)
  return actualFill(buf, offset, size, cb)
}

function actualFill (buf, offset, size, cb) {
  if (process.browser) {
    var ourBuf = buf.buffer
    var uint = new Uint8Array(ourBuf, offset, size)
    crypto.getRandomValues(uint)
    if (cb) {
      process.nextTick(function () {
        cb(null, buf)
      })
      return
    }
    return buf
  }
  if (cb) {
    randombytes(size, function (err, bytes) {
      if (err) {
        return cb(err)
      }
      bytes.copy(buf, offset)
      cb(null, buf)
    })
    return
  }
  var bytes = randombytes(size)
  bytes.copy(buf, offset)
  return buf
}
function randomFillSync (buf, offset, size) {
  if (typeof offset === 'undefined') {
    offset = 0
  }
  if (!Buffer.isBuffer(buf) && !(buf instanceof global.Uint8Array)) {
    throw new TypeError('"buf" argument must be a Buffer or Uint8Array')
  }

  assertOffset(offset, buf.length)

  if (size === undefined) size = buf.length - offset

  assertSize(size, offset, buf.length)

  return actualFill(buf, offset, size)
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"_process":316,"randombytes":323,"safe-buffer":326}],325:[function(require,module,exports){
'use strict'
var Buffer = require('buffer').Buffer
var inherits = require('inherits')
var HashBase = require('hash-base')

var ARRAY16 = new Array(16)

var zl = [
  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
  7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
  3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
  1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
  4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
]

var zr = [
  5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
  6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
  15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
  8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
  12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
]

var sl = [
  11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
  7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
  11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
  11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
  9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
]

var sr = [
  8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
  9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
  9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
  15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
  8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
]

var hl = [0x00000000, 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xa953fd4e]
var hr = [0x50a28be6, 0x5c4dd124, 0x6d703ef3, 0x7a6d76e9, 0x00000000]

function RIPEMD160 () {
  HashBase.call(this, 64)

  // state
  this._a = 0x67452301
  this._b = 0xefcdab89
  this._c = 0x98badcfe
  this._d = 0x10325476
  this._e = 0xc3d2e1f0
}

inherits(RIPEMD160, HashBase)

RIPEMD160.prototype._update = function () {
  var words = ARRAY16
  for (var j = 0; j < 16; ++j) words[j] = this._block.readInt32LE(j * 4)

  var al = this._a | 0
  var bl = this._b | 0
  var cl = this._c | 0
  var dl = this._d | 0
  var el = this._e | 0

  var ar = this._a | 0
  var br = this._b | 0
  var cr = this._c | 0
  var dr = this._d | 0
  var er = this._e | 0

  // computation
  for (var i = 0; i < 80; i += 1) {
    var tl
    var tr
    if (i < 16) {
      tl = fn1(al, bl, cl, dl, el, words[zl[i]], hl[0], sl[i])
      tr = fn5(ar, br, cr, dr, er, words[zr[i]], hr[0], sr[i])
    } else if (i < 32) {
      tl = fn2(al, bl, cl, dl, el, words[zl[i]], hl[1], sl[i])
      tr = fn4(ar, br, cr, dr, er, words[zr[i]], hr[1], sr[i])
    } else if (i < 48) {
      tl = fn3(al, bl, cl, dl, el, words[zl[i]], hl[2], sl[i])
      tr = fn3(ar, br, cr, dr, er, words[zr[i]], hr[2], sr[i])
    } else if (i < 64) {
      tl = fn4(al, bl, cl, dl, el, words[zl[i]], hl[3], sl[i])
      tr = fn2(ar, br, cr, dr, er, words[zr[i]], hr[3], sr[i])
    } else { // if (i<80) {
      tl = fn5(al, bl, cl, dl, el, words[zl[i]], hl[4], sl[i])
      tr = fn1(ar, br, cr, dr, er, words[zr[i]], hr[4], sr[i])
    }

    al = el
    el = dl
    dl = rotl(cl, 10)
    cl = bl
    bl = tl

    ar = er
    er = dr
    dr = rotl(cr, 10)
    cr = br
    br = tr
  }

  // update state
  var t = (this._b + cl + dr) | 0
  this._b = (this._c + dl + er) | 0
  this._c = (this._d + el + ar) | 0
  this._d = (this._e + al + br) | 0
  this._e = (this._a + bl + cr) | 0
  this._a = t
}

RIPEMD160.prototype._digest = function () {
  // create padding and handle blocks
  this._block[this._blockOffset++] = 0x80
  if (this._blockOffset > 56) {
    this._block.fill(0, this._blockOffset, 64)
    this._update()
    this._blockOffset = 0
  }

  this._block.fill(0, this._blockOffset, 56)
  this._block.writeUInt32LE(this._length[0], 56)
  this._block.writeUInt32LE(this._length[1], 60)
  this._update()

  // produce result
  var buffer = Buffer.alloc ? Buffer.alloc(20) : new Buffer(20)
  buffer.writeInt32LE(this._a, 0)
  buffer.writeInt32LE(this._b, 4)
  buffer.writeInt32LE(this._c, 8)
  buffer.writeInt32LE(this._d, 12)
  buffer.writeInt32LE(this._e, 16)
  return buffer
}

function rotl (x, n) {
  return (x << n) | (x >>> (32 - n))
}

function fn1 (a, b, c, d, e, m, k, s) {
  return (rotl((a + (b ^ c ^ d) + m + k) | 0, s) + e) | 0
}

function fn2 (a, b, c, d, e, m, k, s) {
  return (rotl((a + ((b & c) | ((~b) & d)) + m + k) | 0, s) + e) | 0
}

function fn3 (a, b, c, d, e, m, k, s) {
  return (rotl((a + ((b | (~c)) ^ d) + m + k) | 0, s) + e) | 0
}

function fn4 (a, b, c, d, e, m, k, s) {
  return (rotl((a + ((b & d) | (c & (~d))) + m + k) | 0, s) + e) | 0
}

function fn5 (a, b, c, d, e, m, k, s) {
  return (rotl((a + (b ^ (c | (~d))) + m + k) | 0, s) + e) | 0
}

module.exports = RIPEMD160

},{"buffer":168,"hash-base":229,"inherits":245}],326:[function(require,module,exports){
/* eslint-disable node/no-deprecated-api */
var buffer = require('buffer')
var Buffer = buffer.Buffer

// alternative to using Object.keys for old browsers
function copyProps (src, dst) {
  for (var key in src) {
    dst[key] = src[key]
  }
}
if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
  module.exports = buffer
} else {
  // Copy properties from require('buffer')
  copyProps(buffer, exports)
  exports.Buffer = SafeBuffer
}

function SafeBuffer (arg, encodingOrOffset, length) {
  return Buffer(arg, encodingOrOffset, length)
}

// Copy static methods from Buffer
copyProps(Buffer, SafeBuffer)

SafeBuffer.from = function (arg, encodingOrOffset, length) {
  if (typeof arg === 'number') {
    throw new TypeError('Argument must not be a number')
  }
  return Buffer(arg, encodingOrOffset, length)
}

SafeBuffer.alloc = function (size, fill, encoding) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  var buf = Buffer(size)
  if (fill !== undefined) {
    if (typeof encoding === 'string') {
      buf.fill(fill, encoding)
    } else {
      buf.fill(fill)
    }
  } else {
    buf.fill(0)
  }
  return buf
}

SafeBuffer.allocUnsafe = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return Buffer(size)
}

SafeBuffer.allocUnsafeSlow = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return buffer.SlowBuffer(size)
}

},{"buffer":168}],327:[function(require,module,exports){
(function (Buffer){
;(function (sax) { // wrapper for non-node envs
  sax.parser = function (strict, opt) { return new SAXParser(strict, opt) }
  sax.SAXParser = SAXParser
  sax.SAXStream = SAXStream
  sax.createStream = createStream

  // When we pass the MAX_BUFFER_LENGTH position, start checking for buffer overruns.
  // When we check, schedule the next check for MAX_BUFFER_LENGTH - (max(buffer lengths)),
  // since that's the earliest that a buffer overrun could occur.  This way, checks are
  // as rare as required, but as often as necessary to ensure never crossing this bound.
  // Furthermore, buffers are only tested at most once per write(), so passing a very
  // large string into write() might have undesirable effects, but this is manageable by
  // the caller, so it is assumed to be safe.  Thus, a call to write() may, in the extreme
  // edge case, result in creating at most one complete copy of the string passed in.
  // Set to Infinity to have unlimited buffers.
  sax.MAX_BUFFER_LENGTH = 64 * 1024

  var buffers = [
    'comment', 'sgmlDecl', 'textNode', 'tagName', 'doctype',
    'procInstName', 'procInstBody', 'entity', 'attribName',
    'attribValue', 'cdata', 'script'
  ]

  sax.EVENTS = [
    'text',
    'processinginstruction',
    'sgmldeclaration',
    'doctype',
    'comment',
    'opentagstart',
    'attribute',
    'opentag',
    'closetag',
    'opencdata',
    'cdata',
    'closecdata',
    'error',
    'end',
    'ready',
    'script',
    'opennamespace',
    'closenamespace'
  ]

  function SAXParser (strict, opt) {
    if (!(this instanceof SAXParser)) {
      return new SAXParser(strict, opt)
    }

    var parser = this
    clearBuffers(parser)
    parser.q = parser.c = ''
    parser.bufferCheckPosition = sax.MAX_BUFFER_LENGTH
    parser.opt = opt || {}
    parser.opt.lowercase = parser.opt.lowercase || parser.opt.lowercasetags
    parser.looseCase = parser.opt.lowercase ? 'toLowerCase' : 'toUpperCase'
    parser.tags = []
    parser.closed = parser.closedRoot = parser.sawRoot = false
    parser.tag = parser.error = null
    parser.strict = !!strict
    parser.noscript = !!(strict || parser.opt.noscript)
    parser.state = S.BEGIN
    parser.strictEntities = parser.opt.strictEntities
    parser.ENTITIES = parser.strictEntities ? Object.create(sax.XML_ENTITIES) : Object.create(sax.ENTITIES)
    parser.attribList = []

    // namespaces form a prototype chain.
    // it always points at the current tag,
    // which protos to its parent tag.
    if (parser.opt.xmlns) {
      parser.ns = Object.create(rootNS)
    }

    // mostly just for error reporting
    parser.trackPosition = parser.opt.position !== false
    if (parser.trackPosition) {
      parser.position = parser.line = parser.column = 0
    }
    emit(parser, 'onready')
  }

  if (!Object.create) {
    Object.create = function (o) {
      function F () {}
      F.prototype = o
      var newf = new F()
      return newf
    }
  }

  if (!Object.keys) {
    Object.keys = function (o) {
      var a = []
      for (var i in o) if (o.hasOwnProperty(i)) a.push(i)
      return a
    }
  }

  function checkBufferLength (parser) {
    var maxAllowed = Math.max(sax.MAX_BUFFER_LENGTH, 10)
    var maxActual = 0
    for (var i = 0, l = buffers.length; i < l; i++) {
      var len = parser[buffers[i]].length
      if (len > maxAllowed) {
        // Text/cdata nodes can get big, and since they're buffered,
        // we can get here under normal conditions.
        // Avoid issues by emitting the text node now,
        // so at least it won't get any bigger.
        switch (buffers[i]) {
          case 'textNode':
            closeText(parser)
            break

          case 'cdata':
            emitNode(parser, 'oncdata', parser.cdata)
            parser.cdata = ''
            break

          case 'script':
            emitNode(parser, 'onscript', parser.script)
            parser.script = ''
            break

          default:
            error(parser, 'Max buffer length exceeded: ' + buffers[i])
        }
      }
      maxActual = Math.max(maxActual, len)
    }
    // schedule the next check for the earliest possible buffer overrun.
    var m = sax.MAX_BUFFER_LENGTH - maxActual
    parser.bufferCheckPosition = m + parser.position
  }

  function clearBuffers (parser) {
    for (var i = 0, l = buffers.length; i < l; i++) {
      parser[buffers[i]] = ''
    }
  }

  function flushBuffers (parser) {
    closeText(parser)
    if (parser.cdata !== '') {
      emitNode(parser, 'oncdata', parser.cdata)
      parser.cdata = ''
    }
    if (parser.script !== '') {
      emitNode(parser, 'onscript', parser.script)
      parser.script = ''
    }
  }

  SAXParser.prototype = {
    end: function () { end(this) },
    write: write,
    resume: function () { this.error = null; return this },
    close: function () { return this.write(null) },
    flush: function () { flushBuffers(this) }
  }

  var Stream
  try {
    Stream = require('stream').Stream
  } catch (ex) {
    Stream = function () {}
  }

  var streamWraps = sax.EVENTS.filter(function (ev) {
    return ev !== 'error' && ev !== 'end'
  })

  function createStream (strict, opt) {
    return new SAXStream(strict, opt)
  }

  function SAXStream (strict, opt) {
    if (!(this instanceof SAXStream)) {
      return new SAXStream(strict, opt)
    }

    Stream.apply(this)

    this._parser = new SAXParser(strict, opt)
    this.writable = true
    this.readable = true

    var me = this

    this._parser.onend = function () {
      me.emit('end')
    }

    this._parser.onerror = function (er) {
      me.emit('error', er)

      // if didn't throw, then means error was handled.
      // go ahead and clear error, so we can write again.
      me._parser.error = null
    }

    this._decoder = null

    streamWraps.forEach(function (ev) {
      Object.defineProperty(me, 'on' + ev, {
        get: function () {
          return me._parser['on' + ev]
        },
        set: function (h) {
          if (!h) {
            me.removeAllListeners(ev)
            me._parser['on' + ev] = h
            return h
          }
          me.on(ev, h)
        },
        enumerable: true,
        configurable: false
      })
    })
  }

  SAXStream.prototype = Object.create(Stream.prototype, {
    constructor: {
      value: SAXStream
    }
  })

  SAXStream.prototype.write = function (data) {
    if (typeof Buffer === 'function' &&
      typeof Buffer.isBuffer === 'function' &&
      Buffer.isBuffer(data)) {
      if (!this._decoder) {
        var SD = require('string_decoder').StringDecoder
        this._decoder = new SD('utf8')
      }
      data = this._decoder.write(data)
    }

    this._parser.write(data.toString())
    this.emit('data', data)
    return true
  }

  SAXStream.prototype.end = function (chunk) {
    if (chunk && chunk.length) {
      this.write(chunk)
    }
    this._parser.end()
    return true
  }

  SAXStream.prototype.on = function (ev, handler) {
    var me = this
    if (!me._parser['on' + ev] && streamWraps.indexOf(ev) !== -1) {
      me._parser['on' + ev] = function () {
        var args = arguments.length === 1 ? [arguments[0]] : Array.apply(null, arguments)
        args.splice(0, 0, ev)
        me.emit.apply(me, args)
      }
    }

    return Stream.prototype.on.call(me, ev, handler)
  }

  // this really needs to be replaced with character classes.
  // XML allows all manner of ridiculous numbers and digits.
  var CDATA = '[CDATA['
  var DOCTYPE = 'DOCTYPE'
  var XML_NAMESPACE = 'http://www.w3.org/XML/1998/namespace'
  var XMLNS_NAMESPACE = 'http://www.w3.org/2000/xmlns/'
  var rootNS = { xml: XML_NAMESPACE, xmlns: XMLNS_NAMESPACE }

  // http://www.w3.org/TR/REC-xml/#NT-NameStartChar
  // This implementation works on strings, a single character at a time
  // as such, it cannot ever support astral-plane characters (10000-EFFFF)
  // without a significant breaking change to either this  parser, or the
  // JavaScript language.  Implementation of an emoji-capable xml parser
  // is left as an exercise for the reader.
  var nameStart = /[:_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/

  var nameBody = /[:_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD\u00B7\u0300-\u036F\u203F-\u2040.\d-]/

  var entityStart = /[#:_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/
  var entityBody = /[#:_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD\u00B7\u0300-\u036F\u203F-\u2040.\d-]/

  function isWhitespace (c) {
    return c === ' ' || c === '\n' || c === '\r' || c === '\t'
  }

  function isQuote (c) {
    return c === '"' || c === '\''
  }

  function isAttribEnd (c) {
    return c === '>' || isWhitespace(c)
  }

  function isMatch (regex, c) {
    return regex.test(c)
  }

  function notMatch (regex, c) {
    return !isMatch(regex, c)
  }

  var S = 0
  sax.STATE = {
    BEGIN: S++, // leading byte order mark or whitespace
    BEGIN_WHITESPACE: S++, // leading whitespace
    TEXT: S++, // general stuff
    TEXT_ENTITY: S++, // &amp and such.
    OPEN_WAKA: S++, // <
    SGML_DECL: S++, // <!BLARG
    SGML_DECL_QUOTED: S++, // <!BLARG foo "bar
    DOCTYPE: S++, // <!DOCTYPE
    DOCTYPE_QUOTED: S++, // <!DOCTYPE "//blah
    DOCTYPE_DTD: S++, // <!DOCTYPE "//blah" [ ...
    DOCTYPE_DTD_QUOTED: S++, // <!DOCTYPE "//blah" [ "foo
    COMMENT_STARTING: S++, // <!-
    COMMENT: S++, // <!--
    COMMENT_ENDING: S++, // <!-- blah -
    COMMENT_ENDED: S++, // <!-- blah --
    CDATA: S++, // <![CDATA[ something
    CDATA_ENDING: S++, // ]
    CDATA_ENDING_2: S++, // ]]
    PROC_INST: S++, // <?hi
    PROC_INST_BODY: S++, // <?hi there
    PROC_INST_ENDING: S++, // <?hi "there" ?
    OPEN_TAG: S++, // <strong
    OPEN_TAG_SLASH: S++, // <strong /
    ATTRIB: S++, // <a
    ATTRIB_NAME: S++, // <a foo
    ATTRIB_NAME_SAW_WHITE: S++, // <a foo _
    ATTRIB_VALUE: S++, // <a foo=
    ATTRIB_VALUE_QUOTED: S++, // <a foo="bar
    ATTRIB_VALUE_CLOSED: S++, // <a foo="bar"
    ATTRIB_VALUE_UNQUOTED: S++, // <a foo=bar
    ATTRIB_VALUE_ENTITY_Q: S++, // <foo bar="&quot;"
    ATTRIB_VALUE_ENTITY_U: S++, // <foo bar=&quot
    CLOSE_TAG: S++, // </a
    CLOSE_TAG_SAW_WHITE: S++, // </a   >
    SCRIPT: S++, // <script> ...
    SCRIPT_ENDING: S++ // <script> ... <
  }

  sax.XML_ENTITIES = {
    'amp': '&',
    'gt': '>',
    'lt': '<',
    'quot': '"',
    'apos': "'"
  }

  sax.ENTITIES = {
    'amp': '&',
    'gt': '>',
    'lt': '<',
    'quot': '"',
    'apos': "'",
    'AElig': 198,
    'Aacute': 193,
    'Acirc': 194,
    'Agrave': 192,
    'Aring': 197,
    'Atilde': 195,
    'Auml': 196,
    'Ccedil': 199,
    'ETH': 208,
    'Eacute': 201,
    'Ecirc': 202,
    'Egrave': 200,
    'Euml': 203,
    'Iacute': 205,
    'Icirc': 206,
    'Igrave': 204,
    'Iuml': 207,
    'Ntilde': 209,
    'Oacute': 211,
    'Ocirc': 212,
    'Ograve': 210,
    'Oslash': 216,
    'Otilde': 213,
    'Ouml': 214,
    'THORN': 222,
    'Uacute': 218,
    'Ucirc': 219,
    'Ugrave': 217,
    'Uuml': 220,
    'Yacute': 221,
    'aacute': 225,
    'acirc': 226,
    'aelig': 230,
    'agrave': 224,
    'aring': 229,
    'atilde': 227,
    'auml': 228,
    'ccedil': 231,
    'eacute': 233,
    'ecirc': 234,
    'egrave': 232,
    'eth': 240,
    'euml': 235,
    'iacute': 237,
    'icirc': 238,
    'igrave': 236,
    'iuml': 239,
    'ntilde': 241,
    'oacute': 243,
    'ocirc': 244,
    'ograve': 242,
    'oslash': 248,
    'otilde': 245,
    'ouml': 246,
    'szlig': 223,
    'thorn': 254,
    'uacute': 250,
    'ucirc': 251,
    'ugrave': 249,
    'uuml': 252,
    'yacute': 253,
    'yuml': 255,
    'copy': 169,
    'reg': 174,
    'nbsp': 160,
    'iexcl': 161,
    'cent': 162,
    'pound': 163,
    'curren': 164,
    'yen': 165,
    'brvbar': 166,
    'sect': 167,
    'uml': 168,
    'ordf': 170,
    'laquo': 171,
    'not': 172,
    'shy': 173,
    'macr': 175,
    'deg': 176,
    'plusmn': 177,
    'sup1': 185,
    'sup2': 178,
    'sup3': 179,
    'acute': 180,
    'micro': 181,
    'para': 182,
    'middot': 183,
    'cedil': 184,
    'ordm': 186,
    'raquo': 187,
    'frac14': 188,
    'frac12': 189,
    'frac34': 190,
    'iquest': 191,
    'times': 215,
    'divide': 247,
    'OElig': 338,
    'oelig': 339,
    'Scaron': 352,
    'scaron': 353,
    'Yuml': 376,
    'fnof': 402,
    'circ': 710,
    'tilde': 732,
    'Alpha': 913,
    'Beta': 914,
    'Gamma': 915,
    'Delta': 916,
    'Epsilon': 917,
    'Zeta': 918,
    'Eta': 919,
    'Theta': 920,
    'Iota': 921,
    'Kappa': 922,
    'Lambda': 923,
    'Mu': 924,
    'Nu': 925,
    'Xi': 926,
    'Omicron': 927,
    'Pi': 928,
    'Rho': 929,
    'Sigma': 931,
    'Tau': 932,
    'Upsilon': 933,
    'Phi': 934,
    'Chi': 935,
    'Psi': 936,
    'Omega': 937,
    'alpha': 945,
    'beta': 946,
    'gamma': 947,
    'delta': 948,
    'epsilon': 949,
    'zeta': 950,
    'eta': 951,
    'theta': 952,
    'iota': 953,
    'kappa': 954,
    'lambda': 955,
    'mu': 956,
    'nu': 957,
    'xi': 958,
    'omicron': 959,
    'pi': 960,
    'rho': 961,
    'sigmaf': 962,
    'sigma': 963,
    'tau': 964,
    'upsilon': 965,
    'phi': 966,
    'chi': 967,
    'psi': 968,
    'omega': 969,
    'thetasym': 977,
    'upsih': 978,
    'piv': 982,
    'ensp': 8194,
    'emsp': 8195,
    'thinsp': 8201,
    'zwnj': 8204,
    'zwj': 8205,
    'lrm': 8206,
    'rlm': 8207,
    'ndash': 8211,
    'mdash': 8212,
    'lsquo': 8216,
    'rsquo': 8217,
    'sbquo': 8218,
    'ldquo': 8220,
    'rdquo': 8221,
    'bdquo': 8222,
    'dagger': 8224,
    'Dagger': 8225,
    'bull': 8226,
    'hellip': 8230,
    'permil': 8240,
    'prime': 8242,
    'Prime': 8243,
    'lsaquo': 8249,
    'rsaquo': 8250,
    'oline': 8254,
    'frasl': 8260,
    'euro': 8364,
    'image': 8465,
    'weierp': 8472,
    'real': 8476,
    'trade': 8482,
    'alefsym': 8501,
    'larr': 8592,
    'uarr': 8593,
    'rarr': 8594,
    'darr': 8595,
    'harr': 8596,
    'crarr': 8629,
    'lArr': 8656,
    'uArr': 8657,
    'rArr': 8658,
    'dArr': 8659,
    'hArr': 8660,
    'forall': 8704,
    'part': 8706,
    'exist': 8707,
    'empty': 8709,
    'nabla': 8711,
    'isin': 8712,
    'notin': 8713,
    'ni': 8715,
    'prod': 8719,
    'sum': 8721,
    'minus': 8722,
    'lowast': 8727,
    'radic': 8730,
    'prop': 8733,
    'infin': 8734,
    'ang': 8736,
    'and': 8743,
    'or': 8744,
    'cap': 8745,
    'cup': 8746,
    'int': 8747,
    'there4': 8756,
    'sim': 8764,
    'cong': 8773,
    'asymp': 8776,
    'ne': 8800,
    'equiv': 8801,
    'le': 8804,
    'ge': 8805,
    'sub': 8834,
    'sup': 8835,
    'nsub': 8836,
    'sube': 8838,
    'supe': 8839,
    'oplus': 8853,
    'otimes': 8855,
    'perp': 8869,
    'sdot': 8901,
    'lceil': 8968,
    'rceil': 8969,
    'lfloor': 8970,
    'rfloor': 8971,
    'lang': 9001,
    'rang': 9002,
    'loz': 9674,
    'spades': 9824,
    'clubs': 9827,
    'hearts': 9829,
    'diams': 9830
  }

  Object.keys(sax.ENTITIES).forEach(function (key) {
    var e = sax.ENTITIES[key]
    var s = typeof e === 'number' ? String.fromCharCode(e) : e
    sax.ENTITIES[key] = s
  })

  for (var s in sax.STATE) {
    sax.STATE[sax.STATE[s]] = s
  }

  // shorthand
  S = sax.STATE

  function emit (parser, event, data) {
    parser[event] && parser[event](data)
  }

  function emitNode (parser, nodeType, data) {
    if (parser.textNode) closeText(parser)
    emit(parser, nodeType, data)
  }

  function closeText (parser) {
    parser.textNode = textopts(parser.opt, parser.textNode)
    if (parser.textNode) emit(parser, 'ontext', parser.textNode)
    parser.textNode = ''
  }

  function textopts (opt, text) {
    if (opt.trim) text = text.trim()
    if (opt.normalize) text = text.replace(/\s+/g, ' ')
    return text
  }

  function error (parser, er) {
    closeText(parser)
    if (parser.trackPosition) {
      er += '\nLine: ' + parser.line +
        '\nColumn: ' + parser.column +
        '\nChar: ' + parser.c
    }
    er = new Error(er)
    parser.error = er
    emit(parser, 'onerror', er)
    return parser
  }

  function end (parser) {
    if (parser.sawRoot && !parser.closedRoot) strictFail(parser, 'Unclosed root tag')
    if ((parser.state !== S.BEGIN) &&
      (parser.state !== S.BEGIN_WHITESPACE) &&
      (parser.state !== S.TEXT)) {
      error(parser, 'Unexpected end')
    }
    closeText(parser)
    parser.c = ''
    parser.closed = true
    emit(parser, 'onend')
    SAXParser.call(parser, parser.strict, parser.opt)
    return parser
  }

  function strictFail (parser, message) {
    if (typeof parser !== 'object' || !(parser instanceof SAXParser)) {
      throw new Error('bad call to strictFail')
    }
    if (parser.strict) {
      error(parser, message)
    }
  }

  function newTag (parser) {
    if (!parser.strict) parser.tagName = parser.tagName[parser.looseCase]()
    var parent = parser.tags[parser.tags.length - 1] || parser
    var tag = parser.tag = { name: parser.tagName, attributes: {} }

    // will be overridden if tag contails an xmlns="foo" or xmlns:foo="bar"
    if (parser.opt.xmlns) {
      tag.ns = parent.ns
    }
    parser.attribList.length = 0
    emitNode(parser, 'onopentagstart', tag)
  }

  function qname (name, attribute) {
    var i = name.indexOf(':')
    var qualName = i < 0 ? [ '', name ] : name.split(':')
    var prefix = qualName[0]
    var local = qualName[1]

    // <x "xmlns"="http://foo">
    if (attribute && name === 'xmlns') {
      prefix = 'xmlns'
      local = ''
    }

    return { prefix: prefix, local: local }
  }

  function attrib (parser) {
    if (!parser.strict) {
      parser.attribName = parser.attribName[parser.looseCase]()
    }

    if (parser.attribList.indexOf(parser.attribName) !== -1 ||
      parser.tag.attributes.hasOwnProperty(parser.attribName)) {
      parser.attribName = parser.attribValue = ''
      return
    }

    if (parser.opt.xmlns) {
      var qn = qname(parser.attribName, true)
      var prefix = qn.prefix
      var local = qn.local

      if (prefix === 'xmlns') {
        // namespace binding attribute. push the binding into scope
        if (local === 'xml' && parser.attribValue !== XML_NAMESPACE) {
          strictFail(parser,
            'xml: prefix must be bound to ' + XML_NAMESPACE + '\n' +
            'Actual: ' + parser.attribValue)
        } else if (local === 'xmlns' && parser.attribValue !== XMLNS_NAMESPACE) {
          strictFail(parser,
            'xmlns: prefix must be bound to ' + XMLNS_NAMESPACE + '\n' +
            'Actual: ' + parser.attribValue)
        } else {
          var tag = parser.tag
          var parent = parser.tags[parser.tags.length - 1] || parser
          if (tag.ns === parent.ns) {
            tag.ns = Object.create(parent.ns)
          }
          tag.ns[local] = parser.attribValue
        }
      }

      // defer onattribute events until all attributes have been seen
      // so any new bindings can take effect. preserve attribute order
      // so deferred events can be emitted in document order
      parser.attribList.push([parser.attribName, parser.attribValue])
    } else {
      // in non-xmlns mode, we can emit the event right away
      parser.tag.attributes[parser.attribName] = parser.attribValue
      emitNode(parser, 'onattribute', {
        name: parser.attribName,
        value: parser.attribValue
      })
    }

    parser.attribName = parser.attribValue = ''
  }

  function openTag (parser, selfClosing) {
    if (parser.opt.xmlns) {
      // emit namespace binding events
      var tag = parser.tag

      // add namespace info to tag
      var qn = qname(parser.tagName)
      tag.prefix = qn.prefix
      tag.local = qn.local
      tag.uri = tag.ns[qn.prefix] || ''

      if (tag.prefix && !tag.uri) {
        strictFail(parser, 'Unbound namespace prefix: ' +
          JSON.stringify(parser.tagName))
        tag.uri = qn.prefix
      }

      var parent = parser.tags[parser.tags.length - 1] || parser
      if (tag.ns && parent.ns !== tag.ns) {
        Object.keys(tag.ns).forEach(function (p) {
          emitNode(parser, 'onopennamespace', {
            prefix: p,
            uri: tag.ns[p]
          })
        })
      }

      // handle deferred onattribute events
      // Note: do not apply default ns to attributes:
      //   http://www.w3.org/TR/REC-xml-names/#defaulting
      for (var i = 0, l = parser.attribList.length; i < l; i++) {
        var nv = parser.attribList[i]
        var name = nv[0]
        var value = nv[1]
        var qualName = qname(name, true)
        var prefix = qualName.prefix
        var local = qualName.local
        var uri = prefix === '' ? '' : (tag.ns[prefix] || '')
        var a = {
          name: name,
          value: value,
          prefix: prefix,
          local: local,
          uri: uri
        }

        // if there's any attributes with an undefined namespace,
        // then fail on them now.
        if (prefix && prefix !== 'xmlns' && !uri) {
          strictFail(parser, 'Unbound namespace prefix: ' +
            JSON.stringify(prefix))
          a.uri = prefix
        }
        parser.tag.attributes[name] = a
        emitNode(parser, 'onattribute', a)
      }
      parser.attribList.length = 0
    }

    parser.tag.isSelfClosing = !!selfClosing

    // process the tag
    parser.sawRoot = true
    parser.tags.push(parser.tag)
    emitNode(parser, 'onopentag', parser.tag)
    if (!selfClosing) {
      // special case for <script> in non-strict mode.
      if (!parser.noscript && parser.tagName.toLowerCase() === 'script') {
        parser.state = S.SCRIPT
      } else {
        parser.state = S.TEXT
      }
      parser.tag = null
      parser.tagName = ''
    }
    parser.attribName = parser.attribValue = ''
    parser.attribList.length = 0
  }

  function closeTag (parser) {
    if (!parser.tagName) {
      strictFail(parser, 'Weird empty close tag.')
      parser.textNode += '</>'
      parser.state = S.TEXT
      return
    }

    if (parser.script) {
      if (parser.tagName !== 'script') {
        parser.script += '</' + parser.tagName + '>'
        parser.tagName = ''
        parser.state = S.SCRIPT
        return
      }
      emitNode(parser, 'onscript', parser.script)
      parser.script = ''
    }

    // first make sure that the closing tag actually exists.
    // <a><b></c></b></a> will close everything, otherwise.
    var t = parser.tags.length
    var tagName = parser.tagName
    if (!parser.strict) {
      tagName = tagName[parser.looseCase]()
    }
    var closeTo = tagName
    while (t--) {
      var close = parser.tags[t]
      if (close.name !== closeTo) {
        // fail the first time in strict mode
        strictFail(parser, 'Unexpected close tag')
      } else {
        break
      }
    }

    // didn't find it.  we already failed for strict, so just abort.
    if (t < 0) {
      strictFail(parser, 'Unmatched closing tag: ' + parser.tagName)
      parser.textNode += '</' + parser.tagName + '>'
      parser.state = S.TEXT
      return
    }
    parser.tagName = tagName
    var s = parser.tags.length
    while (s-- > t) {
      var tag = parser.tag = parser.tags.pop()
      parser.tagName = parser.tag.name
      emitNode(parser, 'onclosetag', parser.tagName)

      var x = {}
      for (var i in tag.ns) {
        x[i] = tag.ns[i]
      }

      var parent = parser.tags[parser.tags.length - 1] || parser
      if (parser.opt.xmlns && tag.ns !== parent.ns) {
        // remove namespace bindings introduced by tag
        Object.keys(tag.ns).forEach(function (p) {
          var n = tag.ns[p]
          emitNode(parser, 'onclosenamespace', { prefix: p, uri: n })
        })
      }
    }
    if (t === 0) parser.closedRoot = true
    parser.tagName = parser.attribValue = parser.attribName = ''
    parser.attribList.length = 0
    parser.state = S.TEXT
  }

  function parseEntity (parser) {
    var entity = parser.entity
    var entityLC = entity.toLowerCase()
    var num
    var numStr = ''

    if (parser.ENTITIES[entity]) {
      return parser.ENTITIES[entity]
    }
    if (parser.ENTITIES[entityLC]) {
      return parser.ENTITIES[entityLC]
    }
    entity = entityLC
    if (entity.charAt(0) === '#') {
      if (entity.charAt(1) === 'x') {
        entity = entity.slice(2)
        num = parseInt(entity, 16)
        numStr = num.toString(16)
      } else {
        entity = entity.slice(1)
        num = parseInt(entity, 10)
        numStr = num.toString(10)
      }
    }
    entity = entity.replace(/^0+/, '')
    if (isNaN(num) || numStr.toLowerCase() !== entity) {
      strictFail(parser, 'Invalid character entity')
      return '&' + parser.entity + ';'
    }

    return String.fromCodePoint(num)
  }

  function beginWhiteSpace (parser, c) {
    if (c === '<') {
      parser.state = S.OPEN_WAKA
      parser.startTagPosition = parser.position
    } else if (!isWhitespace(c)) {
      // have to process this as a text node.
      // weird, but happens.
      strictFail(parser, 'Non-whitespace before first tag.')
      parser.textNode = c
      parser.state = S.TEXT
    }
  }

  function charAt (chunk, i) {
    var result = ''
    if (i < chunk.length) {
      result = chunk.charAt(i)
    }
    return result
  }

  function write (chunk) {
    var parser = this
    if (this.error) {
      throw this.error
    }
    if (parser.closed) {
      return error(parser,
        'Cannot write after close. Assign an onready handler.')
    }
    if (chunk === null) {
      return end(parser)
    }
    if (typeof chunk === 'object') {
      chunk = chunk.toString()
    }
    var i = 0
    var c = ''
    while (true) {
      c = charAt(chunk, i++)
      parser.c = c

      if (!c) {
        break
      }

      if (parser.trackPosition) {
        parser.position++
        if (c === '\n') {
          parser.line++
          parser.column = 0
        } else {
          parser.column++
        }
      }

      switch (parser.state) {
        case S.BEGIN:
          parser.state = S.BEGIN_WHITESPACE
          if (c === '\uFEFF') {
            continue
          }
          beginWhiteSpace(parser, c)
          continue

        case S.BEGIN_WHITESPACE:
          beginWhiteSpace(parser, c)
          continue

        case S.TEXT:
          if (parser.sawRoot && !parser.closedRoot) {
            var starti = i - 1
            while (c && c !== '<' && c !== '&') {
              c = charAt(chunk, i++)
              if (c && parser.trackPosition) {
                parser.position++
                if (c === '\n') {
                  parser.line++
                  parser.column = 0
                } else {
                  parser.column++
                }
              }
            }
            parser.textNode += chunk.substring(starti, i - 1)
          }
          if (c === '<' && !(parser.sawRoot && parser.closedRoot && !parser.strict)) {
            parser.state = S.OPEN_WAKA
            parser.startTagPosition = parser.position
          } else {
            if (!isWhitespace(c) && (!parser.sawRoot || parser.closedRoot)) {
              strictFail(parser, 'Text data outside of root node.')
            }
            if (c === '&') {
              parser.state = S.TEXT_ENTITY
            } else {
              parser.textNode += c
            }
          }
          continue

        case S.SCRIPT:
          // only non-strict
          if (c === '<') {
            parser.state = S.SCRIPT_ENDING
          } else {
            parser.script += c
          }
          continue

        case S.SCRIPT_ENDING:
          if (c === '/') {
            parser.state = S.CLOSE_TAG
          } else {
            parser.script += '<' + c
            parser.state = S.SCRIPT
          }
          continue

        case S.OPEN_WAKA:
          // either a /, ?, !, or text is coming next.
          if (c === '!') {
            parser.state = S.SGML_DECL
            parser.sgmlDecl = ''
          } else if (isWhitespace(c)) {
            // wait for it...
          } else if (isMatch(nameStart, c)) {
            parser.state = S.OPEN_TAG
            parser.tagName = c
          } else if (c === '/') {
            parser.state = S.CLOSE_TAG
            parser.tagName = ''
          } else if (c === '?') {
            parser.state = S.PROC_INST
            parser.procInstName = parser.procInstBody = ''
          } else {
            strictFail(parser, 'Unencoded <')
            // if there was some whitespace, then add that in.
            if (parser.startTagPosition + 1 < parser.position) {
              var pad = parser.position - parser.startTagPosition
              c = new Array(pad).join(' ') + c
            }
            parser.textNode += '<' + c
            parser.state = S.TEXT
          }
          continue

        case S.SGML_DECL:
          if ((parser.sgmlDecl + c).toUpperCase() === CDATA) {
            emitNode(parser, 'onopencdata')
            parser.state = S.CDATA
            parser.sgmlDecl = ''
            parser.cdata = ''
          } else if (parser.sgmlDecl + c === '--') {
            parser.state = S.COMMENT
            parser.comment = ''
            parser.sgmlDecl = ''
          } else if ((parser.sgmlDecl + c).toUpperCase() === DOCTYPE) {
            parser.state = S.DOCTYPE
            if (parser.doctype || parser.sawRoot) {
              strictFail(parser,
                'Inappropriately located doctype declaration')
            }
            parser.doctype = ''
            parser.sgmlDecl = ''
          } else if (c === '>') {
            emitNode(parser, 'onsgmldeclaration', parser.sgmlDecl)
            parser.sgmlDecl = ''
            parser.state = S.TEXT
          } else if (isQuote(c)) {
            parser.state = S.SGML_DECL_QUOTED
            parser.sgmlDecl += c
          } else {
            parser.sgmlDecl += c
          }
          continue

        case S.SGML_DECL_QUOTED:
          if (c === parser.q) {
            parser.state = S.SGML_DECL
            parser.q = ''
          }
          parser.sgmlDecl += c
          continue

        case S.DOCTYPE:
          if (c === '>') {
            parser.state = S.TEXT
            emitNode(parser, 'ondoctype', parser.doctype)
            parser.doctype = true // just remember that we saw it.
          } else {
            parser.doctype += c
            if (c === '[') {
              parser.state = S.DOCTYPE_DTD
            } else if (isQuote(c)) {
              parser.state = S.DOCTYPE_QUOTED
              parser.q = c
            }
          }
          continue

        case S.DOCTYPE_QUOTED:
          parser.doctype += c
          if (c === parser.q) {
            parser.q = ''
            parser.state = S.DOCTYPE
          }
          continue

        case S.DOCTYPE_DTD:
          parser.doctype += c
          if (c === ']') {
            parser.state = S.DOCTYPE
          } else if (isQuote(c)) {
            parser.state = S.DOCTYPE_DTD_QUOTED
            parser.q = c
          }
          continue

        case S.DOCTYPE_DTD_QUOTED:
          parser.doctype += c
          if (c === parser.q) {
            parser.state = S.DOCTYPE_DTD
            parser.q = ''
          }
          continue

        case S.COMMENT:
          if (c === '-') {
            parser.state = S.COMMENT_ENDING
          } else {
            parser.comment += c
          }
          continue

        case S.COMMENT_ENDING:
          if (c === '-') {
            parser.state = S.COMMENT_ENDED
            parser.comment = textopts(parser.opt, parser.comment)
            if (parser.comment) {
              emitNode(parser, 'oncomment', parser.comment)
            }
            parser.comment = ''
          } else {
            parser.comment += '-' + c
            parser.state = S.COMMENT
          }
          continue

        case S.COMMENT_ENDED:
          if (c !== '>') {
            strictFail(parser, 'Malformed comment')
            // allow <!-- blah -- bloo --> in non-strict mode,
            // which is a comment of " blah -- bloo "
            parser.comment += '--' + c
            parser.state = S.COMMENT
          } else {
            parser.state = S.TEXT
          }
          continue

        case S.CDATA:
          if (c === ']') {
            parser.state = S.CDATA_ENDING
          } else {
            parser.cdata += c
          }
          continue

        case S.CDATA_ENDING:
          if (c === ']') {
            parser.state = S.CDATA_ENDING_2
          } else {
            parser.cdata += ']' + c
            parser.state = S.CDATA
          }
          continue

        case S.CDATA_ENDING_2:
          if (c === '>') {
            if (parser.cdata) {
              emitNode(parser, 'oncdata', parser.cdata)
            }
            emitNode(parser, 'onclosecdata')
            parser.cdata = ''
            parser.state = S.TEXT
          } else if (c === ']') {
            parser.cdata += ']'
          } else {
            parser.cdata += ']]' + c
            parser.state = S.CDATA
          }
          continue

        case S.PROC_INST:
          if (c === '?') {
            parser.state = S.PROC_INST_ENDING
          } else if (isWhitespace(c)) {
            parser.state = S.PROC_INST_BODY
          } else {
            parser.procInstName += c
          }
          continue

        case S.PROC_INST_BODY:
          if (!parser.procInstBody && isWhitespace(c)) {
            continue
          } else if (c === '?') {
            parser.state = S.PROC_INST_ENDING
          } else {
            parser.procInstBody += c
          }
          continue

        case S.PROC_INST_ENDING:
          if (c === '>') {
            emitNode(parser, 'onprocessinginstruction', {
              name: parser.procInstName,
              body: parser.procInstBody
            })
            parser.procInstName = parser.procInstBody = ''
            parser.state = S.TEXT
          } else {
            parser.procInstBody += '?' + c
            parser.state = S.PROC_INST_BODY
          }
          continue

        case S.OPEN_TAG:
          if (isMatch(nameBody, c)) {
            parser.tagName += c
          } else {
            newTag(parser)
            if (c === '>') {
              openTag(parser)
            } else if (c === '/') {
              parser.state = S.OPEN_TAG_SLASH
            } else {
              if (!isWhitespace(c)) {
                strictFail(parser, 'Invalid character in tag name')
              }
              parser.state = S.ATTRIB
            }
          }
          continue

        case S.OPEN_TAG_SLASH:
          if (c === '>') {
            openTag(parser, true)
            closeTag(parser)
          } else {
            strictFail(parser, 'Forward-slash in opening tag not followed by >')
            parser.state = S.ATTRIB
          }
          continue

        case S.ATTRIB:
          // haven't read the attribute name yet.
          if (isWhitespace(c)) {
            continue
          } else if (c === '>') {
            openTag(parser)
          } else if (c === '/') {
            parser.state = S.OPEN_TAG_SLASH
          } else if (isMatch(nameStart, c)) {
            parser.attribName = c
            parser.attribValue = ''
            parser.state = S.ATTRIB_NAME
          } else {
            strictFail(parser, 'Invalid attribute name')
          }
          continue

        case S.ATTRIB_NAME:
          if (c === '=') {
            parser.state = S.ATTRIB_VALUE
          } else if (c === '>') {
            strictFail(parser, 'Attribute without value')
            parser.attribValue = parser.attribName
            attrib(parser)
            openTag(parser)
          } else if (isWhitespace(c)) {
            parser.state = S.ATTRIB_NAME_SAW_WHITE
          } else if (isMatch(nameBody, c)) {
            parser.attribName += c
          } else {
            strictFail(parser, 'Invalid attribute name')
          }
          continue

        case S.ATTRIB_NAME_SAW_WHITE:
          if (c === '=') {
            parser.state = S.ATTRIB_VALUE
          } else if (isWhitespace(c)) {
            continue
          } else {
            strictFail(parser, 'Attribute without value')
            parser.tag.attributes[parser.attribName] = ''
            parser.attribValue = ''
            emitNode(parser, 'onattribute', {
              name: parser.attribName,
              value: ''
            })
            parser.attribName = ''
            if (c === '>') {
              openTag(parser)
            } else if (isMatch(nameStart, c)) {
              parser.attribName = c
              parser.state = S.ATTRIB_NAME
            } else {
              strictFail(parser, 'Invalid attribute name')
              parser.state = S.ATTRIB
            }
          }
          continue

        case S.ATTRIB_VALUE:
          if (isWhitespace(c)) {
            continue
          } else if (isQuote(c)) {
            parser.q = c
            parser.state = S.ATTRIB_VALUE_QUOTED
          } else {
            strictFail(parser, 'Unquoted attribute value')
            parser.state = S.ATTRIB_VALUE_UNQUOTED
            parser.attribValue = c
          }
          continue

        case S.ATTRIB_VALUE_QUOTED:
          if (c !== parser.q) {
            if (c === '&') {
              parser.state = S.ATTRIB_VALUE_ENTITY_Q
            } else {
              parser.attribValue += c
            }
            continue
          }
          attrib(parser)
          parser.q = ''
          parser.state = S.ATTRIB_VALUE_CLOSED
          continue

        case S.ATTRIB_VALUE_CLOSED:
          if (isWhitespace(c)) {
            parser.state = S.ATTRIB
          } else if (c === '>') {
            openTag(parser)
          } else if (c === '/') {
            parser.state = S.OPEN_TAG_SLASH
          } else if (isMatch(nameStart, c)) {
            strictFail(parser, 'No whitespace between attributes')
            parser.attribName = c
            parser.attribValue = ''
            parser.state = S.ATTRIB_NAME
          } else {
            strictFail(parser, 'Invalid attribute name')
          }
          continue

        case S.ATTRIB_VALUE_UNQUOTED:
          if (!isAttribEnd(c)) {
            if (c === '&') {
              parser.state = S.ATTRIB_VALUE_ENTITY_U
            } else {
              parser.attribValue += c
            }
            continue
          }
          attrib(parser)
          if (c === '>') {
            openTag(parser)
          } else {
            parser.state = S.ATTRIB
          }
          continue

        case S.CLOSE_TAG:
          if (!parser.tagName) {
            if (isWhitespace(c)) {
              continue
            } else if (notMatch(nameStart, c)) {
              if (parser.script) {
                parser.script += '</' + c
                parser.state = S.SCRIPT
              } else {
                strictFail(parser, 'Invalid tagname in closing tag.')
              }
            } else {
              parser.tagName = c
            }
          } else if (c === '>') {
            closeTag(parser)
          } else if (isMatch(nameBody, c)) {
            parser.tagName += c
          } else if (parser.script) {
            parser.script += '</' + parser.tagName
            parser.tagName = ''
            parser.state = S.SCRIPT
          } else {
            if (!isWhitespace(c)) {
              strictFail(parser, 'Invalid tagname in closing tag')
            }
            parser.state = S.CLOSE_TAG_SAW_WHITE
          }
          continue

        case S.CLOSE_TAG_SAW_WHITE:
          if (isWhitespace(c)) {
            continue
          }
          if (c === '>') {
            closeTag(parser)
          } else {
            strictFail(parser, 'Invalid characters in closing tag')
          }
          continue

        case S.TEXT_ENTITY:
        case S.ATTRIB_VALUE_ENTITY_Q:
        case S.ATTRIB_VALUE_ENTITY_U:
          var returnState
          var buffer
          switch (parser.state) {
            case S.TEXT_ENTITY:
              returnState = S.TEXT
              buffer = 'textNode'
              break

            case S.ATTRIB_VALUE_ENTITY_Q:
              returnState = S.ATTRIB_VALUE_QUOTED
              buffer = 'attribValue'
              break

            case S.ATTRIB_VALUE_ENTITY_U:
              returnState = S.ATTRIB_VALUE_UNQUOTED
              buffer = 'attribValue'
              break
          }

          if (c === ';') {
            parser[buffer] += parseEntity(parser)
            parser.entity = ''
            parser.state = returnState
          } else if (isMatch(parser.entity.length ? entityBody : entityStart, c)) {
            parser.entity += c
          } else {
            strictFail(parser, 'Invalid character in entity name')
            parser[buffer] += '&' + parser.entity + c
            parser.entity = ''
            parser.state = returnState
          }

          continue

        default:
          throw new Error(parser, 'Unknown state: ' + parser.state)
      }
    } // while

    if (parser.position >= parser.bufferCheckPosition) {
      checkBufferLength(parser)
    }
    return parser
  }

  /*! http://mths.be/fromcodepoint v0.1.0 by @mathias */
  /* istanbul ignore next */
  if (!String.fromCodePoint) {
    (function () {
      var stringFromCharCode = String.fromCharCode
      var floor = Math.floor
      var fromCodePoint = function () {
        var MAX_SIZE = 0x4000
        var codeUnits = []
        var highSurrogate
        var lowSurrogate
        var index = -1
        var length = arguments.length
        if (!length) {
          return ''
        }
        var result = ''
        while (++index < length) {
          var codePoint = Number(arguments[index])
          if (
            !isFinite(codePoint) || // `NaN`, `+Infinity`, or `-Infinity`
            codePoint < 0 || // not a valid Unicode code point
            codePoint > 0x10FFFF || // not a valid Unicode code point
            floor(codePoint) !== codePoint // not an integer
          ) {
            throw RangeError('Invalid code point: ' + codePoint)
          }
          if (codePoint <= 0xFFFF) { // BMP code point
            codeUnits.push(codePoint)
          } else { // Astral code point; split in surrogate halves
            // http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
            codePoint -= 0x10000
            highSurrogate = (codePoint >> 10) + 0xD800
            lowSurrogate = (codePoint % 0x400) + 0xDC00
            codeUnits.push(highSurrogate, lowSurrogate)
          }
          if (index + 1 === length || codeUnits.length > MAX_SIZE) {
            result += stringFromCharCode.apply(null, codeUnits)
            codeUnits.length = 0
          }
        }
        return result
      }
      /* istanbul ignore next */
      if (Object.defineProperty) {
        Object.defineProperty(String, 'fromCodePoint', {
          value: fromCodePoint,
          configurable: true,
          writable: true
        })
      } else {
        String.fromCodePoint = fromCodePoint
      }
    }())
  }
})(typeof exports === 'undefined' ? this.sax = {} : exports)

}).call(this,require("buffer").Buffer)
},{"buffer":168,"stream":337,"string_decoder":351}],328:[function(require,module,exports){
(function (setImmediate){
'use strict';
module.exports = typeof setImmediate === 'function' ? setImmediate :
	function setImmediate() {
		var args = [].slice.apply(arguments);
		args.splice(1, 0, 0);
		setTimeout.apply(null, args);
	};

}).call(this,require("timers").setImmediate)
},{"timers":352}],329:[function(require,module,exports){
var Buffer = require('safe-buffer').Buffer

// prototype class for hash functions
function Hash (blockSize, finalSize) {
  this._block = Buffer.alloc(blockSize)
  this._finalSize = finalSize
  this._blockSize = blockSize
  this._len = 0
}

Hash.prototype.update = function (data, enc) {
  if (typeof data === 'string') {
    enc = enc || 'utf8'
    data = Buffer.from(data, enc)
  }

  var block = this._block
  var blockSize = this._blockSize
  var length = data.length
  var accum = this._len

  for (var offset = 0; offset < length;) {
    var assigned = accum % blockSize
    var remainder = Math.min(length - offset, blockSize - assigned)

    for (var i = 0; i < remainder; i++) {
      block[assigned + i] = data[offset + i]
    }

    accum += remainder
    offset += remainder

    if ((accum % blockSize) === 0) {
      this._update(block)
    }
  }

  this._len += length
  return this
}

Hash.prototype.digest = function (enc) {
  var rem = this._len % this._blockSize

  this._block[rem] = 0x80

  // zero (rem + 1) trailing bits, where (rem + 1) is the smallest
  // non-negative solution to the equation (length + 1 + (rem + 1)) === finalSize mod blockSize
  this._block.fill(0, rem + 1)

  if (rem >= this._finalSize) {
    this._update(this._block)
    this._block.fill(0)
  }

  var bits = this._len * 8

  // uint32
  if (bits <= 0xffffffff) {
    this._block.writeUInt32BE(bits, this._blockSize - 4)

  // uint64
  } else {
    var lowBits = (bits & 0xffffffff) >>> 0
    var highBits = (bits - lowBits) / 0x100000000

    this._block.writeUInt32BE(highBits, this._blockSize - 8)
    this._block.writeUInt32BE(lowBits, this._blockSize - 4)
  }

  this._update(this._block)
  var hash = this._hash()

  return enc ? hash.toString(enc) : hash
}

Hash.prototype._update = function () {
  throw new Error('_update must be implemented by subclass')
}

module.exports = Hash

},{"safe-buffer":326}],330:[function(require,module,exports){
var exports = module.exports = function SHA (algorithm) {
  algorithm = algorithm.toLowerCase()

  var Algorithm = exports[algorithm]
  if (!Algorithm) throw new Error(algorithm + ' is not supported (we accept pull requests)')

  return new Algorithm()
}

exports.sha = require('./sha')
exports.sha1 = require('./sha1')
exports.sha224 = require('./sha224')
exports.sha256 = require('./sha256')
exports.sha384 = require('./sha384')
exports.sha512 = require('./sha512')

},{"./sha":331,"./sha1":332,"./sha224":333,"./sha256":334,"./sha384":335,"./sha512":336}],331:[function(require,module,exports){
/*
 * A JavaScript implementation of the Secure Hash Algorithm, SHA-0, as defined
 * in FIPS PUB 180-1
 * This source code is derived from sha1.js of the same repository.
 * The difference between SHA-0 and SHA-1 is just a bitwise rotate left
 * operation was added.
 */

var inherits = require('inherits')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer

var K = [
  0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
]

var W = new Array(80)

function Sha () {
  this.init()
  this._w = W

  Hash.call(this, 64, 56)
}

inherits(Sha, Hash)

Sha.prototype.init = function () {
  this._a = 0x67452301
  this._b = 0xefcdab89
  this._c = 0x98badcfe
  this._d = 0x10325476
  this._e = 0xc3d2e1f0

  return this
}

function rotl5 (num) {
  return (num << 5) | (num >>> 27)
}

function rotl30 (num) {
  return (num << 30) | (num >>> 2)
}

function ft (s, b, c, d) {
  if (s === 0) return (b & c) | ((~b) & d)
  if (s === 2) return (b & c) | (b & d) | (c & d)
  return b ^ c ^ d
}

Sha.prototype._update = function (M) {
  var W = this._w

  var a = this._a | 0
  var b = this._b | 0
  var c = this._c | 0
  var d = this._d | 0
  var e = this._e | 0

  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
  for (; i < 80; ++i) W[i] = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16]

  for (var j = 0; j < 80; ++j) {
    var s = ~~(j / 20)
    var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0

    e = d
    d = c
    c = rotl30(b)
    b = a
    a = t
  }

  this._a = (a + this._a) | 0
  this._b = (b + this._b) | 0
  this._c = (c + this._c) | 0
  this._d = (d + this._d) | 0
  this._e = (e + this._e) | 0
}

Sha.prototype._hash = function () {
  var H = Buffer.allocUnsafe(20)

  H.writeInt32BE(this._a | 0, 0)
  H.writeInt32BE(this._b | 0, 4)
  H.writeInt32BE(this._c | 0, 8)
  H.writeInt32BE(this._d | 0, 12)
  H.writeInt32BE(this._e | 0, 16)

  return H
}

module.exports = Sha

},{"./hash":329,"inherits":245,"safe-buffer":326}],332:[function(require,module,exports){
/*
 * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined
 * in FIPS PUB 180-1
 * Version 2.1a Copyright Paul Johnston 2000 - 2002.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for details.
 */

var inherits = require('inherits')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer

var K = [
  0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
]

var W = new Array(80)

function Sha1 () {
  this.init()
  this._w = W

  Hash.call(this, 64, 56)
}

inherits(Sha1, Hash)

Sha1.prototype.init = function () {
  this._a = 0x67452301
  this._b = 0xefcdab89
  this._c = 0x98badcfe
  this._d = 0x10325476
  this._e = 0xc3d2e1f0

  return this
}

function rotl1 (num) {
  return (num << 1) | (num >>> 31)
}

function rotl5 (num) {
  return (num << 5) | (num >>> 27)
}

function rotl30 (num) {
  return (num << 30) | (num >>> 2)
}

function ft (s, b, c, d) {
  if (s === 0) return (b & c) | ((~b) & d)
  if (s === 2) return (b & c) | (b & d) | (c & d)
  return b ^ c ^ d
}

Sha1.prototype._update = function (M) {
  var W = this._w

  var a = this._a | 0
  var b = this._b | 0
  var c = this._c | 0
  var d = this._d | 0
  var e = this._e | 0

  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
  for (; i < 80; ++i) W[i] = rotl1(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16])

  for (var j = 0; j < 80; ++j) {
    var s = ~~(j / 20)
    var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0

    e = d
    d = c
    c = rotl30(b)
    b = a
    a = t
  }

  this._a = (a + this._a) | 0
  this._b = (b + this._b) | 0
  this._c = (c + this._c) | 0
  this._d = (d + this._d) | 0
  this._e = (e + this._e) | 0
}

Sha1.prototype._hash = function () {
  var H = Buffer.allocUnsafe(20)

  H.writeInt32BE(this._a | 0, 0)
  H.writeInt32BE(this._b | 0, 4)
  H.writeInt32BE(this._c | 0, 8)
  H.writeInt32BE(this._d | 0, 12)
  H.writeInt32BE(this._e | 0, 16)

  return H
}

module.exports = Sha1

},{"./hash":329,"inherits":245,"safe-buffer":326}],333:[function(require,module,exports){
/**
 * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
 * in FIPS 180-2
 * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 *
 */

var inherits = require('inherits')
var Sha256 = require('./sha256')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer

var W = new Array(64)

function Sha224 () {
  this.init()

  this._w = W // new Array(64)

  Hash.call(this, 64, 56)
}

inherits(Sha224, Sha256)

Sha224.prototype.init = function () {
  this._a = 0xc1059ed8
  this._b = 0x367cd507
  this._c = 0x3070dd17
  this._d = 0xf70e5939
  this._e = 0xffc00b31
  this._f = 0x68581511
  this._g = 0x64f98fa7
  this._h = 0xbefa4fa4

  return this
}

Sha224.prototype._hash = function () {
  var H = Buffer.allocUnsafe(28)

  H.writeInt32BE(this._a, 0)
  H.writeInt32BE(this._b, 4)
  H.writeInt32BE(this._c, 8)
  H.writeInt32BE(this._d, 12)
  H.writeInt32BE(this._e, 16)
  H.writeInt32BE(this._f, 20)
  H.writeInt32BE(this._g, 24)

  return H
}

module.exports = Sha224

},{"./hash":329,"./sha256":334,"inherits":245,"safe-buffer":326}],334:[function(require,module,exports){
/**
 * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
 * in FIPS 180-2
 * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 *
 */

var inherits = require('inherits')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer

var K = [
  0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
  0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
  0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
  0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
  0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
  0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
  0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
  0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
  0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
  0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
  0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
  0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
  0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
  0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
  0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
  0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2
]

var W = new Array(64)

function Sha256 () {
  this.init()

  this._w = W // new Array(64)

  Hash.call(this, 64, 56)
}

inherits(Sha256, Hash)

Sha256.prototype.init = function () {
  this._a = 0x6a09e667
  this._b = 0xbb67ae85
  this._c = 0x3c6ef372
  this._d = 0xa54ff53a
  this._e = 0x510e527f
  this._f = 0x9b05688c
  this._g = 0x1f83d9ab
  this._h = 0x5be0cd19

  return this
}

function ch (x, y, z) {
  return z ^ (x & (y ^ z))
}

function maj (x, y, z) {
  return (x & y) | (z & (x | y))
}

function sigma0 (x) {
  return (x >>> 2 | x << 30) ^ (x >>> 13 | x << 19) ^ (x >>> 22 | x << 10)
}

function sigma1 (x) {
  return (x >>> 6 | x << 26) ^ (x >>> 11 | x << 21) ^ (x >>> 25 | x << 7)
}

function gamma0 (x) {
  return (x >>> 7 | x << 25) ^ (x >>> 18 | x << 14) ^ (x >>> 3)
}

function gamma1 (x) {
  return (x >>> 17 | x << 15) ^ (x >>> 19 | x << 13) ^ (x >>> 10)
}

Sha256.prototype._update = function (M) {
  var W = this._w

  var a = this._a | 0
  var b = this._b | 0
  var c = this._c | 0
  var d = this._d | 0
  var e = this._e | 0
  var f = this._f | 0
  var g = this._g | 0
  var h = this._h | 0

  for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4)
  for (; i < 64; ++i) W[i] = (gamma1(W[i - 2]) + W[i - 7] + gamma0(W[i - 15]) + W[i - 16]) | 0

  for (var j = 0; j < 64; ++j) {
    var T1 = (h + sigma1(e) + ch(e, f, g) + K[j] + W[j]) | 0
    var T2 = (sigma0(a) + maj(a, b, c)) | 0

    h = g
    g = f
    f = e
    e = (d + T1) | 0
    d = c
    c = b
    b = a
    a = (T1 + T2) | 0
  }

  this._a = (a + this._a) | 0
  this._b = (b + this._b) | 0
  this._c = (c + this._c) | 0
  this._d = (d + this._d) | 0
  this._e = (e + this._e) | 0
  this._f = (f + this._f) | 0
  this._g = (g + this._g) | 0
  this._h = (h + this._h) | 0
}

Sha256.prototype._hash = function () {
  var H = Buffer.allocUnsafe(32)

  H.writeInt32BE(this._a, 0)
  H.writeInt32BE(this._b, 4)
  H.writeInt32BE(this._c, 8)
  H.writeInt32BE(this._d, 12)
  H.writeInt32BE(this._e, 16)
  H.writeInt32BE(this._f, 20)
  H.writeInt32BE(this._g, 24)
  H.writeInt32BE(this._h, 28)

  return H
}

module.exports = Sha256

},{"./hash":329,"inherits":245,"safe-buffer":326}],335:[function(require,module,exports){
var inherits = require('inherits')
var SHA512 = require('./sha512')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer

var W = new Array(160)

function Sha384 () {
  this.init()
  this._w = W

  Hash.call(this, 128, 112)
}

inherits(Sha384, SHA512)

Sha384.prototype.init = function () {
  this._ah = 0xcbbb9d5d
  this._bh = 0x629a292a
  this._ch = 0x9159015a
  this._dh = 0x152fecd8
  this._eh = 0x67332667
  this._fh = 0x8eb44a87
  this._gh = 0xdb0c2e0d
  this._hh = 0x47b5481d

  this._al = 0xc1059ed8
  this._bl = 0x367cd507
  this._cl = 0x3070dd17
  this._dl = 0xf70e5939
  this._el = 0xffc00b31
  this._fl = 0x68581511
  this._gl = 0x64f98fa7
  this._hl = 0xbefa4fa4

  return this
}

Sha384.prototype._hash = function () {
  var H = Buffer.allocUnsafe(48)

  function writeInt64BE (h, l, offset) {
    H.writeInt32BE(h, offset)
    H.writeInt32BE(l, offset + 4)
  }

  writeInt64BE(this._ah, this._al, 0)
  writeInt64BE(this._bh, this._bl, 8)
  writeInt64BE(this._ch, this._cl, 16)
  writeInt64BE(this._dh, this._dl, 24)
  writeInt64BE(this._eh, this._el, 32)
  writeInt64BE(this._fh, this._fl, 40)

  return H
}

module.exports = Sha384

},{"./hash":329,"./sha512":336,"inherits":245,"safe-buffer":326}],336:[function(require,module,exports){
var inherits = require('inherits')
var Hash = require('./hash')
var Buffer = require('safe-buffer').Buffer

var K = [
  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
]

var W = new Array(160)

function Sha512 () {
  this.init()
  this._w = W

  Hash.call(this, 128, 112)
}

inherits(Sha512, Hash)

Sha512.prototype.init = function () {
  this._ah = 0x6a09e667
  this._bh = 0xbb67ae85
  this._ch = 0x3c6ef372
  this._dh = 0xa54ff53a
  this._eh = 0x510e527f
  this._fh = 0x9b05688c
  this._gh = 0x1f83d9ab
  this._hh = 0x5be0cd19

  this._al = 0xf3bcc908
  this._bl = 0x84caa73b
  this._cl = 0xfe94f82b
  this._dl = 0x5f1d36f1
  this._el = 0xade682d1
  this._fl = 0x2b3e6c1f
  this._gl = 0xfb41bd6b
  this._hl = 0x137e2179

  return this
}

function Ch (x, y, z) {
  return z ^ (x & (y ^ z))
}

function maj (x, y, z) {
  return (x & y) | (z & (x | y))
}

function sigma0 (x, xl) {
  return (x >>> 28 | xl << 4) ^ (xl >>> 2 | x << 30) ^ (xl >>> 7 | x << 25)
}

function sigma1 (x, xl) {
  return (x >>> 14 | xl << 18) ^ (x >>> 18 | xl << 14) ^ (xl >>> 9 | x << 23)
}

function Gamma0 (x, xl) {
  return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7)
}

function Gamma0l (x, xl) {
  return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7 | xl << 25)
}

function Gamma1 (x, xl) {
  return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6)
}

function Gamma1l (x, xl) {
  return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6 | xl << 26)
}

function getCarry (a, b) {
  return (a >>> 0) < (b >>> 0) ? 1 : 0
}

Sha512.prototype._update = function (M) {
  var W = this._w

  var ah = this._ah | 0
  var bh = this._bh | 0
  var ch = this._ch | 0
  var dh = this._dh | 0
  var eh = this._eh | 0
  var fh = this._fh | 0
  var gh = this._gh | 0
  var hh = this._hh | 0

  var al = this._al | 0
  var bl = this._bl | 0
  var cl = this._cl | 0
  var dl = this._dl | 0
  var el = this._el | 0
  var fl = this._fl | 0
  var gl = this._gl | 0
  var hl = this._hl | 0

  for (var i = 0; i < 32; i += 2) {
    W[i] = M.readInt32BE(i * 4)
    W[i + 1] = M.readInt32BE(i * 4 + 4)
  }
  for (; i < 160; i += 2) {
    var xh = W[i - 15 * 2]
    var xl = W[i - 15 * 2 + 1]
    var gamma0 = Gamma0(xh, xl)
    var gamma0l = Gamma0l(xl, xh)

    xh = W[i - 2 * 2]
    xl = W[i - 2 * 2 + 1]
    var gamma1 = Gamma1(xh, xl)
    var gamma1l = Gamma1l(xl, xh)

    // W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16]
    var Wi7h = W[i - 7 * 2]
    var Wi7l = W[i - 7 * 2 + 1]

    var Wi16h = W[i - 16 * 2]
    var Wi16l = W[i - 16 * 2 + 1]

    var Wil = (gamma0l + Wi7l) | 0
    var Wih = (gamma0 + Wi7h + getCarry(Wil, gamma0l)) | 0
    Wil = (Wil + gamma1l) | 0
    Wih = (Wih + gamma1 + getCarry(Wil, gamma1l)) | 0
    Wil = (Wil + Wi16l) | 0
    Wih = (Wih + Wi16h + getCarry(Wil, Wi16l)) | 0

    W[i] = Wih
    W[i + 1] = Wil
  }

  for (var j = 0; j < 160; j += 2) {
    Wih = W[j]
    Wil = W[j + 1]

    var majh = maj(ah, bh, ch)
    var majl = maj(al, bl, cl)

    var sigma0h = sigma0(ah, al)
    var sigma0l = sigma0(al, ah)
    var sigma1h = sigma1(eh, el)
    var sigma1l = sigma1(el, eh)

    // t1 = h + sigma1 + ch + K[j] + W[j]
    var Kih = K[j]
    var Kil = K[j + 1]

    var chh = Ch(eh, fh, gh)
    var chl = Ch(el, fl, gl)

    var t1l = (hl + sigma1l) | 0
    var t1h = (hh + sigma1h + getCarry(t1l, hl)) | 0
    t1l = (t1l + chl) | 0
    t1h = (t1h + chh + getCarry(t1l, chl)) | 0
    t1l = (t1l + Kil) | 0
    t1h = (t1h + Kih + getCarry(t1l, Kil)) | 0
    t1l = (t1l + Wil) | 0
    t1h = (t1h + Wih + getCarry(t1l, Wil)) | 0

    // t2 = sigma0 + maj
    var t2l = (sigma0l + majl) | 0
    var t2h = (sigma0h + majh + getCarry(t2l, sigma0l)) | 0

    hh = gh
    hl = gl
    gh = fh
    gl = fl
    fh = eh
    fl = el
    el = (dl + t1l) | 0
    eh = (dh + t1h + getCarry(el, dl)) | 0
    dh = ch
    dl = cl
    ch = bh
    cl = bl
    bh = ah
    bl = al
    al = (t1l + t2l) | 0
    ah = (t1h + t2h + getCarry(al, t1l)) | 0
  }

  this._al = (this._al + al) | 0
  this._bl = (this._bl + bl) | 0
  this._cl = (this._cl + cl) | 0
  this._dl = (this._dl + dl) | 0
  this._el = (this._el + el) | 0
  this._fl = (this._fl + fl) | 0
  this._gl = (this._gl + gl) | 0
  this._hl = (this._hl + hl) | 0

  this._ah = (this._ah + ah + getCarry(this._al, al)) | 0
  this._bh = (this._bh + bh + getCarry(this._bl, bl)) | 0
  this._ch = (this._ch + ch + getCarry(this._cl, cl)) | 0
  this._dh = (this._dh + dh + getCarry(this._dl, dl)) | 0
  this._eh = (this._eh + eh + getCarry(this._el, el)) | 0
  this._fh = (this._fh + fh + getCarry(this._fl, fl)) | 0
  this._gh = (this._gh + gh + getCarry(this._gl, gl)) | 0
  this._hh = (this._hh + hh + getCarry(this._hl, hl)) | 0
}

Sha512.prototype._hash = function () {
  var H = Buffer.allocUnsafe(64)

  function writeInt64BE (h, l, offset) {
    H.writeInt32BE(h, offset)
    H.writeInt32BE(l, offset + 4)
  }

  writeInt64BE(this._ah, this._al, 0)
  writeInt64BE(this._bh, this._bl, 8)
  writeInt64BE(this._ch, this._cl, 16)
  writeInt64BE(this._dh, this._dl, 24)
  writeInt64BE(this._eh, this._el, 32)
  writeInt64BE(this._fh, this._fl, 40)
  writeInt64BE(this._gh, this._gl, 48)
  writeInt64BE(this._hh, this._hl, 56)

  return H
}

module.exports = Sha512

},{"./hash":329,"inherits":245,"safe-buffer":326}],337:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

module.exports = Stream;

var EE = require('events').EventEmitter;
var inherits = require('inherits');

inherits(Stream, EE);
Stream.Readable = require('readable-stream/readable.js');
Stream.Writable = require('readable-stream/writable.js');
Stream.Duplex = require('readable-stream/duplex.js');
Stream.Transform = require('readable-stream/transform.js');
Stream.PassThrough = require('readable-stream/passthrough.js');

// Backwards-compat with node 0.4.x
Stream.Stream = Stream;



// old-style streams.  Note that the pipe method (the only relevant
// part of this class) is overridden in the Readable class.

function Stream() {
  EE.call(this);
}

Stream.prototype.pipe = function(dest, options) {
  var source = this;

  function ondata(chunk) {
    if (dest.writable) {
      if (false === dest.write(chunk) && source.pause) {
        source.pause();
      }
    }
  }

  source.on('data', ondata);

  function ondrain() {
    if (source.readable && source.resume) {
      source.resume();
    }
  }

  dest.on('drain', ondrain);

  // If the 'end' option is not supplied, dest.end() will be called when
  // source gets the 'end' or 'close' events.  Only dest.end() once.
  if (!dest._isStdio && (!options || options.end !== false)) {
    source.on('end', onend);
    source.on('close', onclose);
  }

  var didOnEnd = false;
  function onend() {
    if (didOnEnd) return;
    didOnEnd = true;

    dest.end();
  }


  function onclose() {
    if (didOnEnd) return;
    didOnEnd = true;

    if (typeof dest.destroy === 'function') dest.destroy();
  }

  // don't leave dangling pipes when there are errors.
  function onerror(er) {
    cleanup();
    if (EE.listenerCount(this, 'error') === 0) {
      throw er; // Unhandled stream error in pipe.
    }
  }

  source.on('error', onerror);
  dest.on('error', onerror);

  // remove all the event listeners that were added.
  function cleanup() {
    source.removeListener('data', ondata);
    dest.removeListener('drain', ondrain);

    source.removeListener('end', onend);
    source.removeListener('close', onclose);

    source.removeListener('error', onerror);
    dest.removeListener('error', onerror);

    source.removeListener('end', cleanup);
    source.removeListener('close', cleanup);

    dest.removeListener('close', cleanup);
  }

  source.on('end', cleanup);
  source.on('close', cleanup);

  dest.on('close', cleanup);

  dest.emit('pipe', source);

  // Allow for unix-like usage: A.pipe(B).pipe(C)
  return dest;
};

},{"events":205,"inherits":245,"readable-stream/duplex.js":338,"readable-stream/passthrough.js":347,"readable-stream/readable.js":348,"readable-stream/transform.js":349,"readable-stream/writable.js":350}],338:[function(require,module,exports){
module.exports = require('./lib/_stream_duplex.js');

},{"./lib/_stream_duplex.js":339}],339:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.

'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) {
    keys.push(key);
  }return keys;
};
/*</replacement>*/

module.exports = Duplex;

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');

util.inherits(Duplex, Readable);

{
  // avoid scope creep, the keys array can then be collected
  var keys = objectKeys(Writable.prototype);
  for (var v = 0; v < keys.length; v++) {
    var method = keys[v];
    if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
  }
}

function Duplex(options) {
  if (!(this instanceof Duplex)) return new Duplex(options);

  Readable.call(this, options);
  Writable.call(this, options);

  if (options && options.readable === false) this.readable = false;

  if (options && options.writable === false) this.writable = false;

  this.allowHalfOpen = true;
  if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;

  this.once('end', onend);
}

Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function () {
    return this._writableState.highWaterMark;
  }
});

// the no-half-open enforcer
function onend() {
  // if we allow half-open state, or if the writable side ended,
  // then we're ok.
  if (this.allowHalfOpen || this._writableState.ended) return;

  // no more data can be written.
  // But allow more writes to happen in this tick.
  pna.nextTick(onEndNT, this);
}

function onEndNT(self) {
  self.end();
}

Object.defineProperty(Duplex.prototype, 'destroyed', {
  get: function () {
    if (this._readableState === undefined || this._writableState === undefined) {
      return false;
    }
    return this._readableState.destroyed && this._writableState.destroyed;
  },
  set: function (value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (this._readableState === undefined || this._writableState === undefined) {
      return;
    }

    // backward compatibility, the user is explicitly
    // managing destroyed
    this._readableState.destroyed = value;
    this._writableState.destroyed = value;
  }
});

Duplex.prototype._destroy = function (err, cb) {
  this.push(null);
  this.end();

  pna.nextTick(cb, err);
};
},{"./_stream_readable":341,"./_stream_writable":343,"core-util-is":170,"inherits":245,"process-nextick-args":315}],340:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.

'use strict';

module.exports = PassThrough;

var Transform = require('./_stream_transform');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(PassThrough, Transform);

function PassThrough(options) {
  if (!(this instanceof PassThrough)) return new PassThrough(options);

  Transform.call(this, options);
}

PassThrough.prototype._transform = function (chunk, encoding, cb) {
  cb(null, chunk);
};
},{"./_stream_transform":342,"core-util-is":170,"inherits":245}],341:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

module.exports = Readable;

/*<replacement>*/
var isArray = require('isarray');
/*</replacement>*/

/*<replacement>*/
var Duplex;
/*</replacement>*/

Readable.ReadableState = ReadableState;

/*<replacement>*/
var EE = require('events').EventEmitter;

var EElistenerCount = function (emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/

/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/

/*<replacement>*/

var Buffer = require('safe-buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
  return Buffer.from(chunk);
}
function _isUint8Array(obj) {
  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}

/*</replacement>*/

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

/*<replacement>*/
var debugUtil = require('util');
var debug = void 0;
if (debugUtil && debugUtil.debuglog) {
  debug = debugUtil.debuglog('stream');
} else {
  debug = function () {};
}
/*</replacement>*/

var BufferList = require('./internal/streams/BufferList');
var destroyImpl = require('./internal/streams/destroy');
var StringDecoder;

util.inherits(Readable, Stream);

var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];

function prependListener(emitter, event, fn) {
  // Sadly this is not cacheable as some libraries bundle their own
  // event emitter implementation with them.
  if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn);

  // This is a hack to make sure that our error handler is attached before any
  // userland ones.  NEVER DO THIS. This is here only because this code needs
  // to continue to work with older versions of Node.js that do not include
  // the prependListener() method. The goal is to eventually remove this hack.
  if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
}

function ReadableState(options, stream) {
  Duplex = Duplex || require('./_stream_duplex');

  options = options || {};

  // Duplex streams are both readable and writable, but share
  // the same options object.
  // However, some cases require setting options to different
  // values for the readable and the writable sides of the duplex stream.
  // These options can be provided separately as readableXXX and writableXXX.
  var isDuplex = stream instanceof Duplex;

  // object stream flag. Used to make read(n) ignore n and to
  // make all the buffer merging and length checks go away
  this.objectMode = !!options.objectMode;

  if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode;

  // the point at which it stops calling _read() to fill the buffer
  // Note: 0 is a valid value, means "don't call _read preemptively ever"
  var hwm = options.highWaterMark;
  var readableHwm = options.readableHighWaterMark;
  var defaultHwm = this.objectMode ? 16 : 16 * 1024;

  if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (readableHwm || readableHwm === 0)) this.highWaterMark = readableHwm;else this.highWaterMark = defaultHwm;

  // cast to ints.
  this.highWaterMark = Math.floor(this.highWaterMark);

  // A linked list is used to store data chunks instead of an array because the
  // linked list can remove elements from the beginning faster than
  // array.shift()
  this.buffer = new BufferList();
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = null;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false;

  // a flag to be able to tell if the event 'readable'/'data' is emitted
  // immediately, or on a later tick.  We set this to true at first, because
  // any actions that shouldn't happen until "later" should generally also
  // not happen before the first read call.
  this.sync = true;

  // whenever we return null, then we set a flag to say
  // that we're awaiting a 'readable' event emission.
  this.needReadable = false;
  this.emittedReadable = false;
  this.readableListening = false;
  this.resumeScheduled = false;

  // has it been destroyed
  this.destroyed = false;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // the number of writers that are awaiting a drain event in .pipe()s
  this.awaitDrain = 0;

  // if true, a maybeReadMore has been scheduled
  this.readingMore = false;

  this.decoder = null;
  this.encoding = null;
  if (options.encoding) {
    if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
    this.decoder = new StringDecoder(options.encoding);
    this.encoding = options.encoding;
  }
}

function Readable(options) {
  Duplex = Duplex || require('./_stream_duplex');

  if (!(this instanceof Readable)) return new Readable(options);

  this._readableState = new ReadableState(options, this);

  // legacy
  this.readable = true;

  if (options) {
    if (typeof options.read === 'function') this._read = options.read;

    if (typeof options.destroy === 'function') this._destroy = options.destroy;
  }

  Stream.call(this);
}

Object.defineProperty(Readable.prototype, 'destroyed', {
  get: function () {
    if (this._readableState === undefined) {
      return false;
    }
    return this._readableState.destroyed;
  },
  set: function (value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (!this._readableState) {
      return;
    }

    // backward compatibility, the user is explicitly
    // managing destroyed
    this._readableState.destroyed = value;
  }
});

Readable.prototype.destroy = destroyImpl.destroy;
Readable.prototype._undestroy = destroyImpl.undestroy;
Readable.prototype._destroy = function (err, cb) {
  this.push(null);
  cb(err);
};

// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function (chunk, encoding) {
  var state = this._readableState;
  var skipChunkCheck;

  if (!state.objectMode) {
    if (typeof chunk === 'string') {
      encoding = encoding || state.defaultEncoding;
      if (encoding !== state.encoding) {
        chunk = Buffer.from(chunk, encoding);
        encoding = '';
      }
      skipChunkCheck = true;
    }
  } else {
    skipChunkCheck = true;
  }

  return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
};

// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function (chunk) {
  return readableAddChunk(this, chunk, null, true, false);
};

function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
  var state = stream._readableState;
  if (chunk === null) {
    state.reading = false;
    onEofChunk(stream, state);
  } else {
    var er;
    if (!skipChunkCheck) er = chunkInvalid(state, chunk);
    if (er) {
      stream.emit('error', er);
    } else if (state.objectMode || chunk && chunk.length > 0) {
      if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
        chunk = _uint8ArrayToBuffer(chunk);
      }

      if (addToFront) {
        if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true);
      } else if (state.ended) {
        stream.emit('error', new Error('stream.push() after EOF'));
      } else {
        state.reading = false;
        if (state.decoder && !encoding) {
          chunk = state.decoder.write(chunk);
          if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
        } else {
          addChunk(stream, state, chunk, false);
        }
      }
    } else if (!addToFront) {
      state.reading = false;
    }
  }

  return needMoreData(state);
}

function addChunk(stream, state, chunk, addToFront) {
  if (state.flowing && state.length === 0 && !state.sync) {
    stream.emit('data', chunk);
    stream.read(0);
  } else {
    // update the buffer info.
    state.length += state.objectMode ? 1 : chunk.length;
    if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);

    if (state.needReadable) emitReadable(stream);
  }
  maybeReadMore(stream, state);
}

function chunkInvalid(state, chunk) {
  var er;
  if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  return er;
}

// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes.  This is to work around cases where hwm=0,
// such as the repl.  Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
  return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);
}

Readable.prototype.isPaused = function () {
  return this._readableState.flowing === false;
};

// backwards compatibility.
Readable.prototype.setEncoding = function (enc) {
  if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
  this._readableState.decoder = new StringDecoder(enc);
  this._readableState.encoding = enc;
  return this;
};

// Don't raise the hwm > 8MB
var MAX_HWM = 0x800000;
function computeNewHighWaterMark(n) {
  if (n >= MAX_HWM) {
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2 to prevent increasing hwm excessively in
    // tiny amounts
    n--;
    n |= n >>> 1;
    n |= n >>> 2;
    n |= n >>> 4;
    n |= n >>> 8;
    n |= n >>> 16;
    n++;
  }
  return n;
}

// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function howMuchToRead(n, state) {
  if (n <= 0 || state.length === 0 && state.ended) return 0;
  if (state.objectMode) return 1;
  if (n !== n) {
    // Only flow one buffer at a time
    if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
  }
  // If we're asking for more than the current hwm, then raise the hwm.
  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
  if (n <= state.length) return n;
  // Don't have enough
  if (!state.ended) {
    state.needReadable = true;
    return 0;
  }
  return state.length;
}

// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function (n) {
  debug('read', n);
  n = parseInt(n, 10);
  var state = this._readableState;
  var nOrig = n;

  if (n !== 0) state.emittedReadable = false;

  // if we're doing read(0) to trigger a readable event, but we
  // already have a bunch of data in the buffer, then just trigger
  // the 'readable' event and move on.
  if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {
    debug('read: emitReadable', state.length, state.ended);
    if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
    return null;
  }

  n = howMuchToRead(n, state);

  // if we've ended, and we're now clear, then finish it up.
  if (n === 0 && state.ended) {
    if (state.length === 0) endReadable(this);
    return null;
  }

  // All the actual chunk generation logic needs to be
  // *below* the call to _read.  The reason is that in certain
  // synthetic stream cases, such as passthrough streams, _read
  // may be a completely synchronous operation which may change
  // the state of the read buffer, providing enough data when
  // before there was *not* enough.
  //
  // So, the steps are:
  // 1. Figure out what the state of things will be after we do
  // a read from the buffer.
  //
  // 2. If that resulting state will trigger a _read, then call _read.
  // Note that this may be asynchronous, or synchronous.  Yes, it is
  // deeply ugly to write APIs this way, but that still doesn't mean
  // that the Readable class should behave improperly, as streams are
  // designed to be sync/async agnostic.
  // Take note if the _read call is sync or async (ie, if the read call
  // has returned yet), so that we know whether or not it's safe to emit
  // 'readable' etc.
  //
  // 3. Actually pull the requested chunks out of the buffer and return.

  // if we need a readable event, then we need to do some reading.
  var doRead = state.needReadable;
  debug('need readable', doRead);

  // if we currently have less than the highWaterMark, then also read some
  if (state.length === 0 || state.length - n < state.highWaterMark) {
    doRead = true;
    debug('length less than watermark', doRead);
  }

  // however, if we've ended, then there's no point, and if we're already
  // reading, then it's unnecessary.
  if (state.ended || state.reading) {
    doRead = false;
    debug('reading or ended', doRead);
  } else if (doRead) {
    debug('do read');
    state.reading = true;
    state.sync = true;
    // if the length is currently zero, then we *need* a readable event.
    if (state.length === 0) state.needReadable = true;
    // call internal read method
    this._read(state.highWaterMark);
    state.sync = false;
    // If _read pushed data synchronously, then `reading` will be false,
    // and we need to re-evaluate how much data we can return to the user.
    if (!state.reading) n = howMuchToRead(nOrig, state);
  }

  var ret;
  if (n > 0) ret = fromList(n, state);else ret = null;

  if (ret === null) {
    state.needReadable = true;
    n = 0;
  } else {
    state.length -= n;
  }

  if (state.length === 0) {
    // If we have nothing in the buffer, then we want to know
    // as soon as we *do* get something into the buffer.
    if (!state.ended) state.needReadable = true;

    // If we tried to read() past the EOF, then emit end on the next tick.
    if (nOrig !== n && state.ended) endReadable(this);
  }

  if (ret !== null) this.emit('data', ret);

  return ret;
};

function onEofChunk(stream, state) {
  if (state.ended) return;
  if (state.decoder) {
    var chunk = state.decoder.end();
    if (chunk && chunk.length) {
      state.buffer.push(chunk);
      state.length += state.objectMode ? 1 : chunk.length;
    }
  }
  state.ended = true;

  // emit 'readable' now to make sure it gets picked up.
  emitReadable(stream);
}

// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow.  This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
  var state = stream._readableState;
  state.needReadable = false;
  if (!state.emittedReadable) {
    debug('emitReadable', state.flowing);
    state.emittedReadable = true;
    if (state.sync) pna.nextTick(emitReadable_, stream);else emitReadable_(stream);
  }
}

function emitReadable_(stream) {
  debug('emit readable');
  stream.emit('readable');
  flow(stream);
}

// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data.  that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
  if (!state.readingMore) {
    state.readingMore = true;
    pna.nextTick(maybeReadMore_, stream, state);
  }
}

function maybeReadMore_(stream, state) {
  var len = state.length;
  while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {
    debug('maybeReadMore read 0');
    stream.read(0);
    if (len === state.length)
      // didn't get any data, stop spinning.
      break;else len = state.length;
  }
  state.readingMore = false;
}

// abstract method.  to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function (n) {
  this.emit('error', new Error('_read() is not implemented'));
};

Readable.prototype.pipe = function (dest, pipeOpts) {
  var src = this;
  var state = this._readableState;

  switch (state.pipesCount) {
    case 0:
      state.pipes = dest;
      break;
    case 1:
      state.pipes = [state.pipes, dest];
      break;
    default:
      state.pipes.push(dest);
      break;
  }
  state.pipesCount += 1;
  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);

  var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;

  var endFn = doEnd ? onend : unpipe;
  if (state.endEmitted) pna.nextTick(endFn);else src.once('end', endFn);

  dest.on('unpipe', onunpipe);
  function onunpipe(readable, unpipeInfo) {
    debug('onunpipe');
    if (readable === src) {
      if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
        unpipeInfo.hasUnpiped = true;
        cleanup();
      }
    }
  }

  function onend() {
    debug('onend');
    dest.end();
  }

  // when the dest drains, it reduces the awaitDrain counter
  // on the source.  This would be more elegant with a .once()
  // handler in flow(), but adding and removing repeatedly is
  // too slow.
  var ondrain = pipeOnDrain(src);
  dest.on('drain', ondrain);

  var cleanedUp = false;
  function cleanup() {
    debug('cleanup');
    // cleanup event handlers once the pipe is broken
    dest.removeListener('close', onclose);
    dest.removeListener('finish', onfinish);
    dest.removeListener('drain', ondrain);
    dest.removeListener('error', onerror);
    dest.removeListener('unpipe', onunpipe);
    src.removeListener('end', onend);
    src.removeListener('end', unpipe);
    src.removeListener('data', ondata);

    cleanedUp = true;

    // if the reader is waiting for a drain event from this
    // specific writer, then it would cause it to never start
    // flowing again.
    // So, if this is awaiting a drain, then we just call it now.
    // If we don't know, then assume that we are waiting for one.
    if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
  }

  // If the user pushes more data while we're writing to dest then we'll end up
  // in ondata again. However, we only want to increase awaitDrain once because
  // dest will only emit one 'drain' event for the multiple writes.
  // => Introduce a guard on increasing awaitDrain.
  var increasedAwaitDrain = false;
  src.on('data', ondata);
  function ondata(chunk) {
    debug('ondata');
    increasedAwaitDrain = false;
    var ret = dest.write(chunk);
    if (false === ret && !increasedAwaitDrain) {
      // If the user unpiped during `dest.write()`, it is possible
      // to get stuck in a permanently paused state if that write
      // also returned false.
      // => Check whether `dest` is still a piping destination.
      if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
        debug('false write response, pause', src._readableState.awaitDrain);
        src._readableState.awaitDrain++;
        increasedAwaitDrain = true;
      }
      src.pause();
    }
  }

  // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.
  function onerror(er) {
    debug('onerror', er);
    unpipe();
    dest.removeListener('error', onerror);
    if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
  }

  // Make sure our error handler is attached before userland ones.
  prependListener(dest, 'error', onerror);

  // Both close and finish should trigger unpipe, but only once.
  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }
  dest.once('close', onclose);
  function onfinish() {
    debug('onfinish');
    dest.removeListener('close', onclose);
    unpipe();
  }
  dest.once('finish', onfinish);

  function unpipe() {
    debug('unpipe');
    src.unpipe(dest);
  }

  // tell the dest that it's being piped to
  dest.emit('pipe', src);

  // start the flow if it hasn't been started already.
  if (!state.flowing) {
    debug('pipe resume');
    src.resume();
  }

  return dest;
};

function pipeOnDrain(src) {
  return function () {
    var state = src._readableState;
    debug('pipeOnDrain', state.awaitDrain);
    if (state.awaitDrain) state.awaitDrain--;
    if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
      state.flowing = true;
      flow(src);
    }
  };
}

Readable.prototype.unpipe = function (dest) {
  var state = this._readableState;
  var unpipeInfo = { hasUnpiped: false };

  // if we're not piping anywhere, then do nothing.
  if (state.pipesCount === 0) return this;

  // just one destination.  most common case.
  if (state.pipesCount === 1) {
    // passed in one, but it's not the right one.
    if (dest && dest !== state.pipes) return this;

    if (!dest) dest = state.pipes;

    // got a match.
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;
    if (dest) dest.emit('unpipe', this, unpipeInfo);
    return this;
  }

  // slow case. multiple pipe destinations.

  if (!dest) {
    // remove all.
    var dests = state.pipes;
    var len = state.pipesCount;
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;

    for (var i = 0; i < len; i++) {
      dests[i].emit('unpipe', this, unpipeInfo);
    }return this;
  }

  // try to find the right one.
  var index = indexOf(state.pipes, dest);
  if (index === -1) return this;

  state.pipes.splice(index, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1) state.pipes = state.pipes[0];

  dest.emit('unpipe', this, unpipeInfo);

  return this;
};

// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function (ev, fn) {
  var res = Stream.prototype.on.call(this, ev, fn);

  if (ev === 'data') {
    // Start flowing on next tick if stream isn't explicitly paused
    if (this._readableState.flowing !== false) this.resume();
  } else if (ev === 'readable') {
    var state = this._readableState;
    if (!state.endEmitted && !state.readableListening) {
      state.readableListening = state.needReadable = true;
      state.emittedReadable = false;
      if (!state.reading) {
        pna.nextTick(nReadingNextTick, this);
      } else if (state.length) {
        emitReadable(this);
      }
    }
  }

  return res;
};
Readable.prototype.addListener = Readable.prototype.on;

function nReadingNextTick(self) {
  debug('readable nexttick read 0');
  self.read(0);
}

// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function () {
  var state = this._readableState;
  if (!state.flowing) {
    debug('resume');
    state.flowing = true;
    resume(this, state);
  }
  return this;
};

function resume(stream, state) {
  if (!state.resumeScheduled) {
    state.resumeScheduled = true;
    pna.nextTick(resume_, stream, state);
  }
}

function resume_(stream, state) {
  if (!state.reading) {
    debug('resume read 0');
    stream.read(0);
  }

  state.resumeScheduled = false;
  state.awaitDrain = 0;
  stream.emit('resume');
  flow(stream);
  if (state.flowing && !state.reading) stream.read(0);
}

Readable.prototype.pause = function () {
  debug('call pause flowing=%j', this._readableState.flowing);
  if (false !== this._readableState.flowing) {
    debug('pause');
    this._readableState.flowing = false;
    this.emit('pause');
  }
  return this;
};

function flow(stream) {
  var state = stream._readableState;
  debug('flow', state.flowing);
  while (state.flowing && stream.read() !== null) {}
}

// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function (stream) {
  var _this = this;

  var state = this._readableState;
  var paused = false;

  stream.on('end', function () {
    debug('wrapped end');
    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length) _this.push(chunk);
    }

    _this.push(null);
  });

  stream.on('data', function (chunk) {
    debug('wrapped data');
    if (state.decoder) chunk = state.decoder.write(chunk);

    // don't skip over falsy values in objectMode
    if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;

    var ret = _this.push(chunk);
    if (!ret) {
      paused = true;
      stream.pause();
    }
  });

  // proxy all the other methods.
  // important when wrapping filters and duplexes.
  for (var i in stream) {
    if (this[i] === undefined && typeof stream[i] === 'function') {
      this[i] = function (method) {
        return function () {
          return stream[method].apply(stream, arguments);
        };
      }(i);
    }
  }

  // proxy certain important events.
  for (var n = 0; n < kProxyEvents.length; n++) {
    stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));
  }

  // when we try to consume some more bytes, simply unpause the
  // underlying stream.
  this._read = function (n) {
    debug('wrapped _read', n);
    if (paused) {
      paused = false;
      stream.resume();
    }
  };

  return this;
};

Object.defineProperty(Readable.prototype, 'readableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function () {
    return this._readableState.highWaterMark;
  }
});

// exposed for testing purposes only.
Readable._fromList = fromList;

// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromList(n, state) {
  // nothing buffered
  if (state.length === 0) return null;

  var ret;
  if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
    // read it all, truncate the list
    if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
    state.buffer.clear();
  } else {
    // read part of list
    ret = fromListPartial(n, state.buffer, state.decoder);
  }

  return ret;
}

// Extracts only enough buffered data to satisfy the amount requested.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromListPartial(n, list, hasStrings) {
  var ret;
  if (n < list.head.data.length) {
    // slice is the same for buffers and strings
    ret = list.head.data.slice(0, n);
    list.head.data = list.head.data.slice(n);
  } else if (n === list.head.data.length) {
    // first chunk is a perfect match
    ret = list.shift();
  } else {
    // result spans more than one buffer
    ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
  }
  return ret;
}

// Copies a specified amount of characters from the list of buffered data
// chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBufferString(n, list) {
  var p = list.head;
  var c = 1;
  var ret = p.data;
  n -= ret.length;
  while (p = p.next) {
    var str = p.data;
    var nb = n > str.length ? str.length : n;
    if (nb === str.length) ret += str;else ret += str.slice(0, n);
    n -= nb;
    if (n === 0) {
      if (nb === str.length) {
        ++c;
        if (p.next) list.head = p.next;else list.head = list.tail = null;
      } else {
        list.head = p;
        p.data = str.slice(nb);
      }
      break;
    }
    ++c;
  }
  list.length -= c;
  return ret;
}

// Copies a specified amount of bytes from the list of buffered data chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBuffer(n, list) {
  var ret = Buffer.allocUnsafe(n);
  var p = list.head;
  var c = 1;
  p.data.copy(ret);
  n -= p.data.length;
  while (p = p.next) {
    var buf = p.data;
    var nb = n > buf.length ? buf.length : n;
    buf.copy(ret, ret.length - n, 0, nb);
    n -= nb;
    if (n === 0) {
      if (nb === buf.length) {
        ++c;
        if (p.next) list.head = p.next;else list.head = list.tail = null;
      } else {
        list.head = p;
        p.data = buf.slice(nb);
      }
      break;
    }
    ++c;
  }
  list.length -= c;
  return ret;
}

function endReadable(stream) {
  var state = stream._readableState;

  // If we get here before consuming all the bytes, then that is a
  // bug in node.  Should never happen.
  if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream');

  if (!state.endEmitted) {
    state.ended = true;
    pna.nextTick(endReadableNT, state, stream);
  }
}

function endReadableNT(state, stream) {
  // Check that we didn't get one last unshift.
  if (!state.endEmitted && state.length === 0) {
    state.endEmitted = true;
    stream.readable = false;
    stream.emit('end');
  }
}

function indexOf(xs, x) {
  for (var i = 0, l = xs.length; i < l; i++) {
    if (xs[i] === x) return i;
  }
  return -1;
}
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./_stream_duplex":339,"./internal/streams/BufferList":344,"./internal/streams/destroy":345,"./internal/streams/stream":346,"_process":316,"core-util-is":170,"events":205,"inherits":245,"isarray":247,"process-nextick-args":315,"safe-buffer":326,"string_decoder/":351,"util":138}],342:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a transform stream is a readable/writable stream where you do
// something with the data.  Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored.  (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation.  For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes.  When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up.  When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer.  When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks.  If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk.  However,
// a pathological inflate type of transform can cause excessive buffering
// here.  For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output.  In this case, you could write a very small
// amount of input, and end up with a very large amount of output.  In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform.  A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.

'use strict';

module.exports = Transform;

var Duplex = require('./_stream_duplex');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(Transform, Duplex);

function afterTransform(er, data) {
  var ts = this._transformState;
  ts.transforming = false;

  var cb = ts.writecb;

  if (!cb) {
    return this.emit('error', new Error('write callback called multiple times'));
  }

  ts.writechunk = null;
  ts.writecb = null;

  if (data != null) // single equals check for both `null` and `undefined`
    this.push(data);

  cb(er);

  var rs = this._readableState;
  rs.reading = false;
  if (rs.needReadable || rs.length < rs.highWaterMark) {
    this._read(rs.highWaterMark);
  }
}

function Transform(options) {
  if (!(this instanceof Transform)) return new Transform(options);

  Duplex.call(this, options);

  this._transformState = {
    afterTransform: afterTransform.bind(this),
    needTransform: false,
    transforming: false,
    writecb: null,
    writechunk: null,
    writeencoding: null
  };

  // start out asking for a readable event once data is transformed.
  this._readableState.needReadable = true;

  // we have implemented the _read method, and done the other things
  // that Readable wants before the first _read call, so unset the
  // sync guard flag.
  this._readableState.sync = false;

  if (options) {
    if (typeof options.transform === 'function') this._transform = options.transform;

    if (typeof options.flush === 'function') this._flush = options.flush;
  }

  // When the writable side finishes, then flush out anything remaining.
  this.on('prefinish', prefinish);
}

function prefinish() {
  var _this = this;

  if (typeof this._flush === 'function') {
    this._flush(function (er, data) {
      done(_this, er, data);
    });
  } else {
    done(this, null, null);
  }
}

Transform.prototype.push = function (chunk, encoding) {
  this._transformState.needTransform = false;
  return Duplex.prototype.push.call(this, chunk, encoding);
};

// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side.  You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk.  If you pass
// an error, then that'll put the hurt on the whole operation.  If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function (chunk, encoding, cb) {
  throw new Error('_transform() is not implemented');
};

Transform.prototype._write = function (chunk, encoding, cb) {
  var ts = this._transformState;
  ts.writecb = cb;
  ts.writechunk = chunk;
  ts.writeencoding = encoding;
  if (!ts.transforming) {
    var rs = this._readableState;
    if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
  }
};

// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function (n) {
  var ts = this._transformState;

  if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
    ts.transforming = true;
    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
  } else {
    // mark that we need a transform, so that any data that comes in
    // will get processed, now that we've asked for it.
    ts.needTransform = true;
  }
};

Transform.prototype._destroy = function (err, cb) {
  var _this2 = this;

  Duplex.prototype._destroy.call(this, err, function (err2) {
    cb(err2);
    _this2.emit('close');
  });
};

function done(stream, er, data) {
  if (er) return stream.emit('error', er);

  if (data != null) // single equals check for both `null` and `undefined`
    stream.push(data);

  // if there's nothing in the write buffer, then that means
  // that nothing more will ever be provided
  if (stream._writableState.length) throw new Error('Calling transform done when ws.length != 0');

  if (stream._transformState.transforming) throw new Error('Calling transform done when still transforming');

  return stream.push(null);
}
},{"./_stream_duplex":339,"core-util-is":170,"inherits":245}],343:[function(require,module,exports){
(function (process,global,setImmediate){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// A bit simpler than readable streams.
// Implement an async ._write(chunk, encoding, cb), and it'll handle all
// the drain event emission and buffering.

'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

module.exports = Writable;

/* <replacement> */
function WriteReq(chunk, encoding, cb) {
  this.chunk = chunk;
  this.encoding = encoding;
  this.callback = cb;
  this.next = null;
}

// It seems a linked list but it is not
// there will be only 2 of these for each stream
function CorkedRequest(state) {
  var _this = this;

  this.next = null;
  this.entry = null;
  this.finish = function () {
    onCorkedFinish(_this, state);
  };
}
/* </replacement> */

/*<replacement>*/
var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : pna.nextTick;
/*</replacement>*/

/*<replacement>*/
var Duplex;
/*</replacement>*/

Writable.WritableState = WritableState;

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

/*<replacement>*/
var internalUtil = {
  deprecate: require('util-deprecate')
};
/*</replacement>*/

/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/

/*<replacement>*/

var Buffer = require('safe-buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
  return Buffer.from(chunk);
}
function _isUint8Array(obj) {
  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}

/*</replacement>*/

var destroyImpl = require('./internal/streams/destroy');

util.inherits(Writable, Stream);

function nop() {}

function WritableState(options, stream) {
  Duplex = Duplex || require('./_stream_duplex');

  options = options || {};

  // Duplex streams are both readable and writable, but share
  // the same options object.
  // However, some cases require setting options to different
  // values for the readable and the writable sides of the duplex stream.
  // These options can be provided separately as readableXXX and writableXXX.
  var isDuplex = stream instanceof Duplex;

  // object stream flag to indicate whether or not this stream
  // contains buffers or objects.
  this.objectMode = !!options.objectMode;

  if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode;

  // the point at which write() starts returning false
  // Note: 0 is a valid value, means that we always return false if
  // the entire buffer is not flushed immediately on write()
  var hwm = options.highWaterMark;
  var writableHwm = options.writableHighWaterMark;
  var defaultHwm = this.objectMode ? 16 : 16 * 1024;

  if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (writableHwm || writableHwm === 0)) this.highWaterMark = writableHwm;else this.highWaterMark = defaultHwm;

  // cast to ints.
  this.highWaterMark = Math.floor(this.highWaterMark);

  // if _final has been called
  this.finalCalled = false;

  // drain event flag.
  this.needDrain = false;
  // at the start of calling end()
  this.ending = false;
  // when end() has been called, and returned
  this.ended = false;
  // when 'finish' is emitted
  this.finished = false;

  // has it been destroyed
  this.destroyed = false;

  // should we decode strings into buffers before passing to _write?
  // this is here so that some node-core streams can optimize string
  // handling at a lower level.
  var noDecode = options.decodeStrings === false;
  this.decodeStrings = !noDecode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // not an actual buffer we keep track of, but a measurement
  // of how much we're waiting to get pushed to some underlying
  // socket or file.
  this.length = 0;

  // a flag to see when we're in the middle of a write.
  this.writing = false;

  // when true all writes will be buffered until .uncork() call
  this.corked = 0;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, because any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // a flag to know if we're processing previously buffered items, which
  // may call the _write() callback in the same tick, so that we don't
  // end up in an overlapped onwrite situation.
  this.bufferProcessing = false;

  // the callback that's passed to _write(chunk,cb)
  this.onwrite = function (er) {
    onwrite(stream, er);
  };

  // the callback that the user supplies to write(chunk,encoding,cb)
  this.writecb = null;

  // the amount that is being written when _write is called.
  this.writelen = 0;

  this.bufferedRequest = null;
  this.lastBufferedRequest = null;

  // number of pending user-supplied write callbacks
  // this must be 0 before 'finish' can be emitted
  this.pendingcb = 0;

  // emit prefinish if the only thing we're waiting for is _write cbs
  // This is relevant for synchronous Transform streams
  this.prefinished = false;

  // True if the error was already emitted and should not be thrown again
  this.errorEmitted = false;

  // count buffered requests
  this.bufferedRequestCount = 0;

  // allocate the first CorkedRequest, there is always
  // one allocated and free to use, and we maintain at most two
  this.corkedRequestsFree = new CorkedRequest(this);
}

WritableState.prototype.getBuffer = function getBuffer() {
  var current = this.bufferedRequest;
  var out = [];
  while (current) {
    out.push(current);
    current = current.next;
  }
  return out;
};

(function () {
  try {
    Object.defineProperty(WritableState.prototype, 'buffer', {
      get: internalUtil.deprecate(function () {
        return this.getBuffer();
      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
    });
  } catch (_) {}
})();

// Test _writableState for inheritance to account for Duplex streams,
// whose prototype chain only points to Readable.
var realHasInstance;
if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
  realHasInstance = Function.prototype[Symbol.hasInstance];
  Object.defineProperty(Writable, Symbol.hasInstance, {
    value: function (object) {
      if (realHasInstance.call(this, object)) return true;
      if (this !== Writable) return false;

      return object && object._writableState instanceof WritableState;
    }
  });
} else {
  realHasInstance = function (object) {
    return object instanceof this;
  };
}

function Writable(options) {
  Duplex = Duplex || require('./_stream_duplex');

  // Writable ctor is applied to Duplexes, too.
  // `realHasInstance` is necessary because using plain `instanceof`
  // would return false, as no `_writableState` property is attached.

  // Trying to use the custom `instanceof` for Writable here will also break the
  // Node.js LazyTransform implementation, which has a non-trivial getter for
  // `_writableState` that would lead to infinite recursion.
  if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {
    return new Writable(options);
  }

  this._writableState = new WritableState(options, this);

  // legacy.
  this.writable = true;

  if (options) {
    if (typeof options.write === 'function') this._write = options.write;

    if (typeof options.writev === 'function') this._writev = options.writev;

    if (typeof options.destroy === 'function') this._destroy = options.destroy;

    if (typeof options.final === 'function') this._final = options.final;
  }

  Stream.call(this);
}

// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function () {
  this.emit('error', new Error('Cannot pipe, not readable'));
};

function writeAfterEnd(stream, cb) {
  var er = new Error('write after end');
  // TODO: defer error events consistently everywhere, not just the cb
  stream.emit('error', er);
  pna.nextTick(cb, er);
}

// Checks that a user-supplied chunk is valid, especially for the particular
// mode the stream is in. Currently this means that `null` is never accepted
// and undefined/non-string values are only allowed in object mode.
function validChunk(stream, state, chunk, cb) {
  var valid = true;
  var er = false;

  if (chunk === null) {
    er = new TypeError('May not write null values to stream');
  } else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  if (er) {
    stream.emit('error', er);
    pna.nextTick(cb, er);
    valid = false;
  }
  return valid;
}

Writable.prototype.write = function (chunk, encoding, cb) {
  var state = this._writableState;
  var ret = false;
  var isBuf = !state.objectMode && _isUint8Array(chunk);

  if (isBuf && !Buffer.isBuffer(chunk)) {
    chunk = _uint8ArrayToBuffer(chunk);
  }

  if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;

  if (typeof cb !== 'function') cb = nop;

  if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
    state.pendingcb++;
    ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
  }

  return ret;
};

Writable.prototype.cork = function () {
  var state = this._writableState;

  state.corked++;
};

Writable.prototype.uncork = function () {
  var state = this._writableState;

  if (state.corked) {
    state.corked--;

    if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
  }
};

Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
  // node::ParseEncoding() requires lower case.
  if (typeof encoding === 'string') encoding = encoding.toLowerCase();
  if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
  this._writableState.defaultEncoding = encoding;
  return this;
};

function decodeChunk(state, chunk, encoding) {
  if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
    chunk = Buffer.from(chunk, encoding);
  }
  return chunk;
}

Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function () {
    return this._writableState.highWaterMark;
  }
});

// if we're already writing something, then just put this
// in the queue, and wait our turn.  Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
  if (!isBuf) {
    var newChunk = decodeChunk(state, chunk, encoding);
    if (chunk !== newChunk) {
      isBuf = true;
      encoding = 'buffer';
      chunk = newChunk;
    }
  }
  var len = state.objectMode ? 1 : chunk.length;

  state.length += len;

  var ret = state.length < state.highWaterMark;
  // we must ensure that previous needDrain will not be reset to false.
  if (!ret) state.needDrain = true;

  if (state.writing || state.corked) {
    var last = state.lastBufferedRequest;
    state.lastBufferedRequest = {
      chunk: chunk,
      encoding: encoding,
      isBuf: isBuf,
      callback: cb,
      next: null
    };
    if (last) {
      last.next = state.lastBufferedRequest;
    } else {
      state.bufferedRequest = state.lastBufferedRequest;
    }
    state.bufferedRequestCount += 1;
  } else {
    doWrite(stream, state, false, len, chunk, encoding, cb);
  }

  return ret;
}

function doWrite(stream, state, writev, len, chunk, encoding, cb) {
  state.writelen = len;
  state.writecb = cb;
  state.writing = true;
  state.sync = true;
  if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
  state.sync = false;
}

function onwriteError(stream, state, sync, er, cb) {
  --state.pendingcb;

  if (sync) {
    // defer the callback if we are being called synchronously
    // to avoid piling up things on the stack
    pna.nextTick(cb, er);
    // this can emit finish, and it will always happen
    // after error
    pna.nextTick(finishMaybe, stream, state);
    stream._writableState.errorEmitted = true;
    stream.emit('error', er);
  } else {
    // the caller expect this to happen before if
    // it is async
    cb(er);
    stream._writableState.errorEmitted = true;
    stream.emit('error', er);
    // this can emit finish, but finish must
    // always follow error
    finishMaybe(stream, state);
  }
}

function onwriteStateUpdate(state) {
  state.writing = false;
  state.writecb = null;
  state.length -= state.writelen;
  state.writelen = 0;
}

function onwrite(stream, er) {
  var state = stream._writableState;
  var sync = state.sync;
  var cb = state.writecb;

  onwriteStateUpdate(state);

  if (er) onwriteError(stream, state, sync, er, cb);else {
    // Check if we're actually ready to finish, but don't emit yet
    var finished = needFinish(state);

    if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
      clearBuffer(stream, state);
    }

    if (sync) {
      /*<replacement>*/
      asyncWrite(afterWrite, stream, state, finished, cb);
      /*</replacement>*/
    } else {
      afterWrite(stream, state, finished, cb);
    }
  }
}

function afterWrite(stream, state, finished, cb) {
  if (!finished) onwriteDrain(stream, state);
  state.pendingcb--;
  cb();
  finishMaybe(stream, state);
}

// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
  if (state.length === 0 && state.needDrain) {
    state.needDrain = false;
    stream.emit('drain');
  }
}

// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
  state.bufferProcessing = true;
  var entry = state.bufferedRequest;

  if (stream._writev && entry && entry.next) {
    // Fast case, write everything using _writev()
    var l = state.bufferedRequestCount;
    var buffer = new Array(l);
    var holder = state.corkedRequestsFree;
    holder.entry = entry;

    var count = 0;
    var allBuffers = true;
    while (entry) {
      buffer[count] = entry;
      if (!entry.isBuf) allBuffers = false;
      entry = entry.next;
      count += 1;
    }
    buffer.allBuffers = allBuffers;

    doWrite(stream, state, true, state.length, buffer, '', holder.finish);

    // doWrite is almost always async, defer these to save a bit of time
    // as the hot path ends with doWrite
    state.pendingcb++;
    state.lastBufferedRequest = null;
    if (holder.next) {
      state.corkedRequestsFree = holder.next;
      holder.next = null;
    } else {
      state.corkedRequestsFree = new CorkedRequest(state);
    }
    state.bufferedRequestCount = 0;
  } else {
    // Slow case, write chunks one-by-one
    while (entry) {
      var chunk = entry.chunk;
      var encoding = entry.encoding;
      var cb = entry.callback;
      var len = state.objectMode ? 1 : chunk.length;

      doWrite(stream, state, false, len, chunk, encoding, cb);
      entry = entry.next;
      state.bufferedRequestCount--;
      // if we didn't call the onwrite immediately, then
      // it means that we need to wait until it does.
      // also, that means that the chunk and cb are currently
      // being processed, so move the buffer counter past them.
      if (state.writing) {
        break;
      }
    }

    if (entry === null) state.lastBufferedRequest = null;
  }

  state.bufferedRequest = entry;
  state.bufferProcessing = false;
}

Writable.prototype._write = function (chunk, encoding, cb) {
  cb(new Error('_write() is not implemented'));
};

Writable.prototype._writev = null;

Writable.prototype.end = function (chunk, encoding, cb) {
  var state = this._writableState;

  if (typeof chunk === 'function') {
    cb = chunk;
    chunk = null;
    encoding = null;
  } else if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);

  // .end() fully uncorks
  if (state.corked) {
    state.corked = 1;
    this.uncork();
  }

  // ignore unnecessary end() calls.
  if (!state.ending && !state.finished) endWritable(this, state, cb);
};

function needFinish(state) {
  return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
}
function callFinal(stream, state) {
  stream._final(function (err) {
    state.pendingcb--;
    if (err) {
      stream.emit('error', err);
    }
    state.prefinished = true;
    stream.emit('prefinish');
    finishMaybe(stream, state);
  });
}
function prefinish(stream, state) {
  if (!state.prefinished && !state.finalCalled) {
    if (typeof stream._final === 'function') {
      state.pendingcb++;
      state.finalCalled = true;
      pna.nextTick(callFinal, stream, state);
    } else {
      state.prefinished = true;
      stream.emit('prefinish');
    }
  }
}

function finishMaybe(stream, state) {
  var need = needFinish(state);
  if (need) {
    prefinish(stream, state);
    if (state.pendingcb === 0) {
      state.finished = true;
      stream.emit('finish');
    }
  }
  return need;
}

function endWritable(stream, state, cb) {
  state.ending = true;
  finishMaybe(stream, state);
  if (cb) {
    if (state.finished) pna.nextTick(cb);else stream.once('finish', cb);
  }
  state.ended = true;
  stream.writable = false;
}

function onCorkedFinish(corkReq, state, err) {
  var entry = corkReq.entry;
  corkReq.entry = null;
  while (entry) {
    var cb = entry.callback;
    state.pendingcb--;
    cb(err);
    entry = entry.next;
  }
  if (state.corkedRequestsFree) {
    state.corkedRequestsFree.next = corkReq;
  } else {
    state.corkedRequestsFree = corkReq;
  }
}

Object.defineProperty(Writable.prototype, 'destroyed', {
  get: function () {
    if (this._writableState === undefined) {
      return false;
    }
    return this._writableState.destroyed;
  },
  set: function (value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (!this._writableState) {
      return;
    }

    // backward compatibility, the user is explicitly
    // managing destroyed
    this._writableState.destroyed = value;
  }
});

Writable.prototype.destroy = destroyImpl.destroy;
Writable.prototype._undestroy = destroyImpl.undestroy;
Writable.prototype._destroy = function (err, cb) {
  this.end();
  cb(err);
};
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("timers").setImmediate)
},{"./_stream_duplex":339,"./internal/streams/destroy":345,"./internal/streams/stream":346,"_process":316,"core-util-is":170,"inherits":245,"process-nextick-args":315,"safe-buffer":326,"timers":352,"util-deprecate":353}],344:[function(require,module,exports){
'use strict';

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Buffer = require('safe-buffer').Buffer;
var util = require('util');

function copyBuffer(src, target, offset) {
  src.copy(target, offset);
}

module.exports = function () {
  function BufferList() {
    _classCallCheck(this, BufferList);

    this.head = null;
    this.tail = null;
    this.length = 0;
  }

  BufferList.prototype.push = function push(v) {
    var entry = { data: v, next: null };
    if (this.length > 0) this.tail.next = entry;else this.head = entry;
    this.tail = entry;
    ++this.length;
  };

  BufferList.prototype.unshift = function unshift(v) {
    var entry = { data: v, next: this.head };
    if (this.length === 0) this.tail = entry;
    this.head = entry;
    ++this.length;
  };

  BufferList.prototype.shift = function shift() {
    if (this.length === 0) return;
    var ret = this.head.data;
    if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
    --this.length;
    return ret;
  };

  BufferList.prototype.clear = function clear() {
    this.head = this.tail = null;
    this.length = 0;
  };

  BufferList.prototype.join = function join(s) {
    if (this.length === 0) return '';
    var p = this.head;
    var ret = '' + p.data;
    while (p = p.next) {
      ret += s + p.data;
    }return ret;
  };

  BufferList.prototype.concat = function concat(n) {
    if (this.length === 0) return Buffer.alloc(0);
    if (this.length === 1) return this.head.data;
    var ret = Buffer.allocUnsafe(n >>> 0);
    var p = this.head;
    var i = 0;
    while (p) {
      copyBuffer(p.data, ret, i);
      i += p.data.length;
      p = p.next;
    }
    return ret;
  };

  return BufferList;
}();

if (util && util.inspect && util.inspect.custom) {
  module.exports.prototype[util.inspect.custom] = function () {
    var obj = util.inspect({ length: this.length });
    return this.constructor.name + ' ' + obj;
  };
}
},{"safe-buffer":326,"util":138}],345:[function(require,module,exports){
'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

// undocumented cb() API, needed for core, not for public API
function destroy(err, cb) {
  var _this = this;

  var readableDestroyed = this._readableState && this._readableState.destroyed;
  var writableDestroyed = this._writableState && this._writableState.destroyed;

  if (readableDestroyed || writableDestroyed) {
    if (cb) {
      cb(err);
    } else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
      pna.nextTick(emitErrorNT, this, err);
    }
    return this;
  }

  // we set destroyed to true before firing error callbacks in order
  // to make it re-entrance safe in case destroy() is called within callbacks

  if (this._readableState) {
    this._readableState.destroyed = true;
  }

  // if this is a duplex stream mark the writable part as destroyed as well
  if (this._writableState) {
    this._writableState.destroyed = true;
  }

  this._destroy(err || null, function (err) {
    if (!cb && err) {
      pna.nextTick(emitErrorNT, _this, err);
      if (_this._writableState) {
        _this._writableState.errorEmitted = true;
      }
    } else if (cb) {
      cb(err);
    }
  });

  return this;
}

function undestroy() {
  if (this._readableState) {
    this._readableState.destroyed = false;
    this._readableState.reading = false;
    this._readableState.ended = false;
    this._readableState.endEmitted = false;
  }

  if (this._writableState) {
    this._writableState.destroyed = false;
    this._writableState.ended = false;
    this._writableState.ending = false;
    this._writableState.finished = false;
    this._writableState.errorEmitted = false;
  }
}

function emitErrorNT(self, err) {
  self.emit('error', err);
}

module.exports = {
  destroy: destroy,
  undestroy: undestroy
};
},{"process-nextick-args":315}],346:[function(require,module,exports){
module.exports = require('events').EventEmitter;

},{"events":205}],347:[function(require,module,exports){
module.exports = require('./readable').PassThrough

},{"./readable":348}],348:[function(require,module,exports){
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = exports;
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');

},{"./lib/_stream_duplex.js":339,"./lib/_stream_passthrough.js":340,"./lib/_stream_readable.js":341,"./lib/_stream_transform.js":342,"./lib/_stream_writable.js":343}],349:[function(require,module,exports){
module.exports = require('./readable').Transform

},{"./readable":348}],350:[function(require,module,exports){
module.exports = require('./lib/_stream_writable.js');

},{"./lib/_stream_writable.js":343}],351:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

/*<replacement>*/

var Buffer = require('safe-buffer').Buffer;
/*</replacement>*/

var isEncoding = Buffer.isEncoding || function (encoding) {
  encoding = '' + encoding;
  switch (encoding && encoding.toLowerCase()) {
    case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':
      return true;
    default:
      return false;
  }
};

function _normalizeEncoding(enc) {
  if (!enc) return 'utf8';
  var retried;
  while (true) {
    switch (enc) {
      case 'utf8':
      case 'utf-8':
        return 'utf8';
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return 'utf16le';
      case 'latin1':
      case 'binary':
        return 'latin1';
      case 'base64':
      case 'ascii':
      case 'hex':
        return enc;
      default:
        if (retried) return; // undefined
        enc = ('' + enc).toLowerCase();
        retried = true;
    }
  }
};

// Do not cache `Buffer.isEncoding` when checking encoding names as some
// modules monkey-patch it to support additional encodings
function normalizeEncoding(enc) {
  var nenc = _normalizeEncoding(enc);
  if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
  return nenc || enc;
}

// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters.
exports.StringDecoder = StringDecoder;
function StringDecoder(encoding) {
  this.encoding = normalizeEncoding(encoding);
  var nb;
  switch (this.encoding) {
    case 'utf16le':
      this.text = utf16Text;
      this.end = utf16End;
      nb = 4;
      break;
    case 'utf8':
      this.fillLast = utf8FillLast;
      nb = 4;
      break;
    case 'base64':
      this.text = base64Text;
      this.end = base64End;
      nb = 3;
      break;
    default:
      this.write = simpleWrite;
      this.end = simpleEnd;
      return;
  }
  this.lastNeed = 0;
  this.lastTotal = 0;
  this.lastChar = Buffer.allocUnsafe(nb);
}

StringDecoder.prototype.write = function (buf) {
  if (buf.length === 0) return '';
  var r;
  var i;
  if (this.lastNeed) {
    r = this.fillLast(buf);
    if (r === undefined) return '';
    i = this.lastNeed;
    this.lastNeed = 0;
  } else {
    i = 0;
  }
  if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
  return r || '';
};

StringDecoder.prototype.end = utf8End;

// Returns only complete characters in a Buffer
StringDecoder.prototype.text = utf8Text;

// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
StringDecoder.prototype.fillLast = function (buf) {
  if (this.lastNeed <= buf.length) {
    buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
  }
  buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
  this.lastNeed -= buf.length;
};

// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
// continuation byte. If an invalid byte is detected, -2 is returned.
function utf8CheckByte(byte) {
  if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
  return byte >> 6 === 0x02 ? -1 : -2;
}

// Checks at most 3 bytes at the end of a Buffer in order to detect an
// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
// needed to complete the UTF-8 character (if applicable) are returned.
function utf8CheckIncomplete(self, buf, i) {
  var j = buf.length - 1;
  if (j < i) return 0;
  var nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) self.lastNeed = nb - 1;
    return nb;
  }
  if (--j < i || nb === -2) return 0;
  nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) self.lastNeed = nb - 2;
    return nb;
  }
  if (--j < i || nb === -2) return 0;
  nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) {
      if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
    }
    return nb;
  }
  return 0;
}

// Validates as many continuation bytes for a multi-byte UTF-8 character as
// needed or are available. If we see a non-continuation byte where we expect
// one, we "replace" the validated continuation bytes we've seen so far with
// a single UTF-8 replacement character ('\ufffd'), to match v8's UTF-8 decoding
// behavior. The continuation byte check is included three times in the case
// where all of the continuation bytes for a character exist in the same buffer.
// It is also done this way as a slight performance increase instead of using a
// loop.
function utf8CheckExtraBytes(self, buf, p) {
  if ((buf[0] & 0xC0) !== 0x80) {
    self.lastNeed = 0;
    return '\ufffd';
  }
  if (self.lastNeed > 1 && buf.length > 1) {
    if ((buf[1] & 0xC0) !== 0x80) {
      self.lastNeed = 1;
      return '\ufffd';
    }
    if (self.lastNeed > 2 && buf.length > 2) {
      if ((buf[2] & 0xC0) !== 0x80) {
        self.lastNeed = 2;
        return '\ufffd';
      }
    }
  }
}

// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
function utf8FillLast(buf) {
  var p = this.lastTotal - this.lastNeed;
  var r = utf8CheckExtraBytes(this, buf, p);
  if (r !== undefined) return r;
  if (this.lastNeed <= buf.length) {
    buf.copy(this.lastChar, p, 0, this.lastNeed);
    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
  }
  buf.copy(this.lastChar, p, 0, buf.length);
  this.lastNeed -= buf.length;
}

// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
// partial character, the character's bytes are buffered until the required
// number of bytes are available.
function utf8Text(buf, i) {
  var total = utf8CheckIncomplete(this, buf, i);
  if (!this.lastNeed) return buf.toString('utf8', i);
  this.lastTotal = total;
  var end = buf.length - (total - this.lastNeed);
  buf.copy(this.lastChar, 0, end);
  return buf.toString('utf8', i, end);
}

// For UTF-8, a replacement character is added when ending on a partial
// character.
function utf8End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) return r + '\ufffd';
  return r;
}

// UTF-16LE typically needs two bytes per character, but even if we have an even
// number of bytes available, we need to check if we end on a leading/high
// surrogate. In that case, we need to wait for the next two bytes in order to
// decode the last character properly.
function utf16Text(buf, i) {
  if ((buf.length - i) % 2 === 0) {
    var r = buf.toString('utf16le', i);
    if (r) {
      var c = r.charCodeAt(r.length - 1);
      if (c >= 0xD800 && c <= 0xDBFF) {
        this.lastNeed = 2;
        this.lastTotal = 4;
        this.lastChar[0] = buf[buf.length - 2];
        this.lastChar[1] = buf[buf.length - 1];
        return r.slice(0, -1);
      }
    }
    return r;
  }
  this.lastNeed = 1;
  this.lastTotal = 2;
  this.lastChar[0] = buf[buf.length - 1];
  return buf.toString('utf16le', i, buf.length - 1);
}

// For UTF-16LE we do not explicitly append special replacement characters if we
// end on a partial character, we simply let v8 handle that.
function utf16End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) {
    var end = this.lastTotal - this.lastNeed;
    return r + this.lastChar.toString('utf16le', 0, end);
  }
  return r;
}

function base64Text(buf, i) {
  var n = (buf.length - i) % 3;
  if (n === 0) return buf.toString('base64', i);
  this.lastNeed = 3 - n;
  this.lastTotal = 3;
  if (n === 1) {
    this.lastChar[0] = buf[buf.length - 1];
  } else {
    this.lastChar[0] = buf[buf.length - 2];
    this.lastChar[1] = buf[buf.length - 1];
  }
  return buf.toString('base64', i, buf.length - n);
}

function base64End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
  return r;
}

// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
function simpleWrite(buf) {
  return buf.toString(this.encoding);
}

function simpleEnd(buf) {
  return buf && buf.length ? this.write(buf) : '';
}
},{"safe-buffer":326}],352:[function(require,module,exports){
(function (setImmediate,clearImmediate){
var nextTick = require('process/browser.js').nextTick;
var apply = Function.prototype.apply;
var slice = Array.prototype.slice;
var immediateIds = {};
var nextImmediateId = 0;

// DOM APIs, for completeness

exports.setTimeout = function() {
  return new Timeout(apply.call(setTimeout, window, arguments), clearTimeout);
};
exports.setInterval = function() {
  return new Timeout(apply.call(setInterval, window, arguments), clearInterval);
};
exports.clearTimeout =
exports.clearInterval = function(timeout) { timeout.close(); };

function Timeout(id, clearFn) {
  this._id = id;
  this._clearFn = clearFn;
}
Timeout.prototype.unref = Timeout.prototype.ref = function() {};
Timeout.prototype.close = function() {
  this._clearFn.call(window, this._id);
};

// Does not start the time, just sets up the members needed.
exports.enroll = function(item, msecs) {
  clearTimeout(item._idleTimeoutId);
  item._idleTimeout = msecs;
};

exports.unenroll = function(item) {
  clearTimeout(item._idleTimeoutId);
  item._idleTimeout = -1;
};

exports._unrefActive = exports.active = function(item) {
  clearTimeout(item._idleTimeoutId);

  var msecs = item._idleTimeout;
  if (msecs >= 0) {
    item._idleTimeoutId = setTimeout(function onTimeout() {
      if (item._onTimeout)
        item._onTimeout();
    }, msecs);
  }
};

// That's not how node.js implements it but the exposed api is the same.
exports.setImmediate = typeof setImmediate === "function" ? setImmediate : function(fn) {
  var id = nextImmediateId++;
  var args = arguments.length < 2 ? false : slice.call(arguments, 1);

  immediateIds[id] = true;

  nextTick(function onNextTick() {
    if (immediateIds[id]) {
      // fn.call() is faster so we optimize for the common use-case
      // @see http://jsperf.com/call-apply-segu
      if (args) {
        fn.apply(null, args);
      } else {
        fn.call(null);
      }
      // Prevent ids from leaking
      exports.clearImmediate(id);
    }
  });

  return id;
};

exports.clearImmediate = typeof clearImmediate === "function" ? clearImmediate : function(id) {
  delete immediateIds[id];
};
}).call(this,require("timers").setImmediate,require("timers").clearImmediate)
},{"process/browser.js":316,"timers":352}],353:[function(require,module,exports){
(function (global){

/**
 * Module exports.
 */

module.exports = deprecate;

/**
 * Mark that a method should not be used.
 * Returns a modified function which warns once by default.
 *
 * If `localStorage.noDeprecation = true` is set, then it is a no-op.
 *
 * If `localStorage.throwDeprecation = true` is set, then deprecated functions
 * will throw an Error when invoked.
 *
 * If `localStorage.traceDeprecation = true` is set, then deprecated functions
 * will invoke `console.trace()` instead of `console.error()`.
 *
 * @param {Function} fn - the function to deprecate
 * @param {String} msg - the string to print to the console when `fn` is invoked
 * @returns {Function} a new "deprecated" version of `fn`
 * @api public
 */

function deprecate (fn, msg) {
  if (config('noDeprecation')) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (config('throwDeprecation')) {
        throw new Error(msg);
      } else if (config('traceDeprecation')) {
        console.trace(msg);
      } else {
        console.warn(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
}

/**
 * Checks `localStorage` for boolean values for the given `name`.
 *
 * @param {String} name
 * @returns {Boolean}
 * @api private
 */

function config (name) {
  // accessing global.localStorage can trigger a DOMException in sandboxed iframes
  try {
    if (!global.localStorage) return false;
  } catch (_) {
    return false;
  }
  var val = global.localStorage[name];
  if (null == val) return false;
  return String(val).toLowerCase() === 'true';
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],354:[function(require,module,exports){
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    ctor.prototype = Object.create(superCtor.prototype, {
      constructor: {
        value: ctor,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    var TempCtor = function () {}
    TempCtor.prototype = superCtor.prototype
    ctor.prototype = new TempCtor()
    ctor.prototype.constructor = ctor
  }
}

},{}],355:[function(require,module,exports){
module.exports = function isBuffer(arg) {
  return arg && typeof arg === 'object'
    && typeof arg.copy === 'function'
    && typeof arg.fill === 'function'
    && typeof arg.readUInt8 === 'function';
}
},{}],356:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
  if (!isString(f)) {
    var objects = [];
    for (var i = 0; i < arguments.length; i++) {
      objects.push(inspect(arguments[i]));
    }
    return objects.join(' ');
  }

  var i = 1;
  var args = arguments;
  var len = args.length;
  var str = String(f).replace(formatRegExp, function(x) {
    if (x === '%%') return '%';
    if (i >= len) return x;
    switch (x) {
      case '%s': return String(args[i++]);
      case '%d': return Number(args[i++]);
      case '%j':
        try {
          return JSON.stringify(args[i++]);
        } catch (_) {
          return '[Circular]';
        }
      default:
        return x;
    }
  });
  for (var x = args[i]; i < len; x = args[++i]) {
    if (isNull(x) || !isObject(x)) {
      str += ' ' + x;
    } else {
      str += ' ' + inspect(x);
    }
  }
  return str;
};


// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
  // Allow for deprecating things in the process of starting up.
  if (isUndefined(global.process)) {
    return function() {
      return exports.deprecate(fn, msg).apply(this, arguments);
    };
  }

  if (process.noDeprecation === true) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (process.throwDeprecation) {
        throw new Error(msg);
      } else if (process.traceDeprecation) {
        console.trace(msg);
      } else {
        console.error(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
};


var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
  if (isUndefined(debugEnviron))
    debugEnviron = process.env.NODE_DEBUG || '';
  set = set.toUpperCase();
  if (!debugs[set]) {
    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
      var pid = process.pid;
      debugs[set] = function() {
        var msg = exports.format.apply(exports, arguments);
        console.error('%s %d: %s', set, pid, msg);
      };
    } else {
      debugs[set] = function() {};
    }
  }
  return debugs[set];
};


/**
 * Echos the value of a value. Trys to print the value out
 * in the best way possible given the different types.
 *
 * @param {Object} obj The object to print out.
 * @param {Object} opts Optional options object that alters the output.
 */
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
  // default options
  var ctx = {
    seen: [],
    stylize: stylizeNoColor
  };
  // legacy...
  if (arguments.length >= 3) ctx.depth = arguments[2];
  if (arguments.length >= 4) ctx.colors = arguments[3];
  if (isBoolean(opts)) {
    // legacy...
    ctx.showHidden = opts;
  } else if (opts) {
    // got an "options" object
    exports._extend(ctx, opts);
  }
  // set default options
  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
  if (isUndefined(ctx.depth)) ctx.depth = 2;
  if (isUndefined(ctx.colors)) ctx.colors = false;
  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
  if (ctx.colors) ctx.stylize = stylizeWithColor;
  return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;


// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
  'bold' : [1, 22],
  'italic' : [3, 23],
  'underline' : [4, 24],
  'inverse' : [7, 27],
  'white' : [37, 39],
  'grey' : [90, 39],
  'black' : [30, 39],
  'blue' : [34, 39],
  'cyan' : [36, 39],
  'green' : [32, 39],
  'magenta' : [35, 39],
  'red' : [31, 39],
  'yellow' : [33, 39]
};

// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
  'special': 'cyan',
  'number': 'yellow',
  'boolean': 'yellow',
  'undefined': 'grey',
  'null': 'bold',
  'string': 'green',
  'date': 'magenta',
  // "name": intentionally not styling
  'regexp': 'red'
};


function stylizeWithColor(str, styleType) {
  var style = inspect.styles[styleType];

  if (style) {
    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
           '\u001b[' + inspect.colors[style][1] + 'm';
  } else {
    return str;
  }
}


function stylizeNoColor(str, styleType) {
  return str;
}


function arrayToHash(array) {
  var hash = {};

  array.forEach(function(val, idx) {
    hash[val] = true;
  });

  return hash;
}


function formatValue(ctx, value, recurseTimes) {
  // Provide a hook for user-specified inspect functions.
  // Check that value is an object with an inspect function on it
  if (ctx.customInspect &&
      value &&
      isFunction(value.inspect) &&
      // Filter out the util module, it's inspect function is special
      value.inspect !== exports.inspect &&
      // Also filter out any prototype objects using the circular check.
      !(value.constructor && value.constructor.prototype === value)) {
    var ret = value.inspect(recurseTimes, ctx);
    if (!isString(ret)) {
      ret = formatValue(ctx, ret, recurseTimes);
    }
    return ret;
  }

  // Primitive types cannot have properties
  var primitive = formatPrimitive(ctx, value);
  if (primitive) {
    return primitive;
  }

  // Look up the keys of the object.
  var keys = Object.keys(value);
  var visibleKeys = arrayToHash(keys);

  if (ctx.showHidden) {
    keys = Object.getOwnPropertyNames(value);
  }

  // IE doesn't make error fields non-enumerable
  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
  if (isError(value)
      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
    return formatError(value);
  }

  // Some type of object without properties can be shortcutted.
  if (keys.length === 0) {
    if (isFunction(value)) {
      var name = value.name ? ': ' + value.name : '';
      return ctx.stylize('[Function' + name + ']', 'special');
    }
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    }
    if (isDate(value)) {
      return ctx.stylize(Date.prototype.toString.call(value), 'date');
    }
    if (isError(value)) {
      return formatError(value);
    }
  }

  var base = '', array = false, braces = ['{', '}'];

  // Make Array say that they are Array
  if (isArray(value)) {
    array = true;
    braces = ['[', ']'];
  }

  // Make functions say that they are functions
  if (isFunction(value)) {
    var n = value.name ? ': ' + value.name : '';
    base = ' [Function' + n + ']';
  }

  // Make RegExps say that they are RegExps
  if (isRegExp(value)) {
    base = ' ' + RegExp.prototype.toString.call(value);
  }

  // Make dates with properties first say the date
  if (isDate(value)) {
    base = ' ' + Date.prototype.toUTCString.call(value);
  }

  // Make error with message first say the error
  if (isError(value)) {
    base = ' ' + formatError(value);
  }

  if (keys.length === 0 && (!array || value.length == 0)) {
    return braces[0] + base + braces[1];
  }

  if (recurseTimes < 0) {
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    } else {
      return ctx.stylize('[Object]', 'special');
    }
  }

  ctx.seen.push(value);

  var output;
  if (array) {
    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
  } else {
    output = keys.map(function(key) {
      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
    });
  }

  ctx.seen.pop();

  return reduceToSingleString(output, base, braces);
}


function formatPrimitive(ctx, value) {
  if (isUndefined(value))
    return ctx.stylize('undefined', 'undefined');
  if (isString(value)) {
    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
                                             .replace(/'/g, "\\'")
                                             .replace(/\\"/g, '"') + '\'';
    return ctx.stylize(simple, 'string');
  }
  if (isNumber(value))
    return ctx.stylize('' + value, 'number');
  if (isBoolean(value))
    return ctx.stylize('' + value, 'boolean');
  // For some reason typeof null is "object", so special case here.
  if (isNull(value))
    return ctx.stylize('null', 'null');
}


function formatError(value) {
  return '[' + Error.prototype.toString.call(value) + ']';
}


function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
  var output = [];
  for (var i = 0, l = value.length; i < l; ++i) {
    if (hasOwnProperty(value, String(i))) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          String(i), true));
    } else {
      output.push('');
    }
  }
  keys.forEach(function(key) {
    if (!key.match(/^\d+$/)) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          key, true));
    }
  });
  return output;
}


function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
  var name, str, desc;
  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
  if (desc.get) {
    if (desc.set) {
      str = ctx.stylize('[Getter/Setter]', 'special');
    } else {
      str = ctx.stylize('[Getter]', 'special');
    }
  } else {
    if (desc.set) {
      str = ctx.stylize('[Setter]', 'special');
    }
  }
  if (!hasOwnProperty(visibleKeys, key)) {
    name = '[' + key + ']';
  }
  if (!str) {
    if (ctx.seen.indexOf(desc.value) < 0) {
      if (isNull(recurseTimes)) {
        str = formatValue(ctx, desc.value, null);
      } else {
        str = formatValue(ctx, desc.value, recurseTimes - 1);
      }
      if (str.indexOf('\n') > -1) {
        if (array) {
          str = str.split('\n').map(function(line) {
            return '  ' + line;
          }).join('\n').substr(2);
        } else {
          str = '\n' + str.split('\n').map(function(line) {
            return '   ' + line;
          }).join('\n');
        }
      }
    } else {
      str = ctx.stylize('[Circular]', 'special');
    }
  }
  if (isUndefined(name)) {
    if (array && key.match(/^\d+$/)) {
      return str;
    }
    name = JSON.stringify('' + key);
    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
      name = name.substr(1, name.length - 2);
      name = ctx.stylize(name, 'name');
    } else {
      name = name.replace(/'/g, "\\'")
                 .replace(/\\"/g, '"')
                 .replace(/(^"|"$)/g, "'");
      name = ctx.stylize(name, 'string');
    }
  }

  return name + ': ' + str;
}


function reduceToSingleString(output, base, braces) {
  var numLinesEst = 0;
  var length = output.reduce(function(prev, cur) {
    numLinesEst++;
    if (cur.indexOf('\n') >= 0) numLinesEst++;
    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
  }, 0);

  if (length > 60) {
    return braces[0] +
           (base === '' ? '' : base + '\n ') +
           ' ' +
           output.join(',\n  ') +
           ' ' +
           braces[1];
  }

  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}


// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
  return Array.isArray(ar);
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return isObject(e) &&
      (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = require('./support/isBuffer');

function objectToString(o) {
  return Object.prototype.toString.call(o);
}


function pad(n) {
  return n < 10 ? '0' + n.toString(10) : n.toString(10);
}


var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
              'Oct', 'Nov', 'Dec'];

// 26 Feb 16:19:34
function timestamp() {
  var d = new Date();
  var time = [pad(d.getHours()),
              pad(d.getMinutes()),
              pad(d.getSeconds())].join(':');
  return [d.getDate(), months[d.getMonth()], time].join(' ');
}


// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};


/**
 * Inherit the prototype methods from one constructor into another.
 *
 * The Function.prototype.inherits from lang.js rewritten as a standalone
 * function (not on Function.prototype). NOTE: If this file is to be loaded
 * during bootstrapping this function needs to be rewritten using some native
 * functions as prototype setup using normal JavaScript does not work as
 * expected during bootstrapping (see mirror.js in r114903).
 *
 * @param {function} ctor Constructor function which needs to inherit the
 *     prototype.
 * @param {function} superCtor Constructor function to inherit prototype from.
 */
exports.inherits = require('inherits');

exports._extend = function(origin, add) {
  // Don't do anything if add isn't an object
  if (!add || !isObject(add)) return origin;

  var keys = Object.keys(add);
  var i = keys.length;
  while (i--) {
    origin[keys[i]] = add[keys[i]];
  }
  return origin;
};

function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":355,"_process":316,"inherits":354}],357:[function(require,module,exports){
var v1 = require('./v1');
var v4 = require('./v4');

var uuid = v4;
uuid.v1 = v1;
uuid.v4 = v4;

module.exports = uuid;

},{"./v1":360,"./v4":361}],358:[function(require,module,exports){
/**
 * Convert array of 16 byte values to UUID string format of the form:
 * XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
 */
var byteToHex = [];
for (var i = 0; i < 256; ++i) {
  byteToHex[i] = (i + 0x100).toString(16).substr(1);
}

function bytesToUuid(buf, offset) {
  var i = offset || 0;
  var bth = byteToHex;
  // join used to fix memory issue caused by concatenation: https://bugs.chromium.org/p/v8/issues/detail?id=3175#c4
  return ([bth[buf[i++]], bth[buf[i++]], 
	bth[buf[i++]], bth[buf[i++]], '-',
	bth[buf[i++]], bth[buf[i++]], '-',
	bth[buf[i++]], bth[buf[i++]], '-',
	bth[buf[i++]], bth[buf[i++]], '-',
	bth[buf[i++]], bth[buf[i++]],
	bth[buf[i++]], bth[buf[i++]],
	bth[buf[i++]], bth[buf[i++]]]).join('');
}

module.exports = bytesToUuid;

},{}],359:[function(require,module,exports){
// Unique ID creation requires a high quality random # generator.  In the
// browser this is a little complicated due to unknown quality of Math.random()
// and inconsistent support for the `crypto` API.  We do the best we can via
// feature-detection

// getRandomValues needs to be invoked in a context where "this" is a Crypto
// implementation. Also, find the complete implementation of crypto on IE11.
var getRandomValues = (typeof(crypto) != 'undefined' && crypto.getRandomValues && crypto.getRandomValues.bind(crypto)) ||
                      (typeof(msCrypto) != 'undefined' && typeof window.msCrypto.getRandomValues == 'function' && msCrypto.getRandomValues.bind(msCrypto));

if (getRandomValues) {
  // WHATWG crypto RNG - http://wiki.whatwg.org/wiki/Crypto
  var rnds8 = new Uint8Array(16); // eslint-disable-line no-undef

  module.exports = function whatwgRNG() {
    getRandomValues(rnds8);
    return rnds8;
  };
} else {
  // Math.random()-based (RNG)
  //
  // If all else fails, use Math.random().  It's fast, but is of unspecified
  // quality.
  var rnds = new Array(16);

  module.exports = function mathRNG() {
    for (var i = 0, r; i < 16; i++) {
      if ((i & 0x03) === 0) r = Math.random() * 0x100000000;
      rnds[i] = r >>> ((i & 0x03) << 3) & 0xff;
    }

    return rnds;
  };
}

},{}],360:[function(require,module,exports){
var rng = require('./lib/rng');
var bytesToUuid = require('./lib/bytesToUuid');

// **`v1()` - Generate time-based UUID**
//
// Inspired by https://github.com/LiosK/UUID.js
// and http://docs.python.org/library/uuid.html

var _nodeId;
var _clockseq;

// Previous uuid creation time
var _lastMSecs = 0;
var _lastNSecs = 0;

// See https://github.com/broofa/node-uuid for API details
function v1(options, buf, offset) {
  var i = buf && offset || 0;
  var b = buf || [];

  options = options || {};
  var node = options.node || _nodeId;
  var clockseq = options.clockseq !== undefined ? options.clockseq : _clockseq;

  // node and clockseq need to be initialized to random values if they're not
  // specified.  We do this lazily to minimize issues related to insufficient
  // system entropy.  See #189
  if (node == null || clockseq == null) {
    var seedBytes = rng();
    if (node == null) {
      // Per 4.5, create and 48-bit node id, (47 random bits + multicast bit = 1)
      node = _nodeId = [
        seedBytes[0] | 0x01,
        seedBytes[1], seedBytes[2], seedBytes[3], seedBytes[4], seedBytes[5]
      ];
    }
    if (clockseq == null) {
      // Per 4.2.2, randomize (14 bit) clockseq
      clockseq = _clockseq = (seedBytes[6] << 8 | seedBytes[7]) & 0x3fff;
    }
  }

  // UUID timestamps are 100 nano-second units since the Gregorian epoch,
  // (1582-10-15 00:00).  JSNumbers aren't precise enough for this, so
  // time is handled internally as 'msecs' (integer milliseconds) and 'nsecs'
  // (100-nanoseconds offset from msecs) since unix epoch, 1970-01-01 00:00.
  var msecs = options.msecs !== undefined ? options.msecs : new Date().getTime();

  // Per 4.2.1.2, use count of uuid's generated during the current clock
  // cycle to simulate higher resolution clock
  var nsecs = options.nsecs !== undefined ? options.nsecs : _lastNSecs + 1;

  // Time since last uuid creation (in msecs)
  var dt = (msecs - _lastMSecs) + (nsecs - _lastNSecs)/10000;

  // Per 4.2.1.2, Bump clockseq on clock regression
  if (dt < 0 && options.clockseq === undefined) {
    clockseq = clockseq + 1 & 0x3fff;
  }

  // Reset nsecs if clock regresses (new clockseq) or we've moved onto a new
  // time interval
  if ((dt < 0 || msecs > _lastMSecs) && options.nsecs === undefined) {
    nsecs = 0;
  }

  // Per 4.2.1.2 Throw error if too many uuids are requested
  if (nsecs >= 10000) {
    throw new Error('uuid.v1(): Can\'t create more than 10M uuids/sec');
  }

  _lastMSecs = msecs;
  _lastNSecs = nsecs;
  _clockseq = clockseq;

  // Per 4.1.4 - Convert from unix epoch to Gregorian epoch
  msecs += 12219292800000;

  // `time_low`
  var tl = ((msecs & 0xfffffff) * 10000 + nsecs) % 0x100000000;
  b[i++] = tl >>> 24 & 0xff;
  b[i++] = tl >>> 16 & 0xff;
  b[i++] = tl >>> 8 & 0xff;
  b[i++] = tl & 0xff;

  // `time_mid`
  var tmh = (msecs / 0x100000000 * 10000) & 0xfffffff;
  b[i++] = tmh >>> 8 & 0xff;
  b[i++] = tmh & 0xff;

  // `time_high_and_version`
  b[i++] = tmh >>> 24 & 0xf | 0x10; // include version
  b[i++] = tmh >>> 16 & 0xff;

  // `clock_seq_hi_and_reserved` (Per 4.2.2 - include variant)
  b[i++] = clockseq >>> 8 | 0x80;

  // `clock_seq_low`
  b[i++] = clockseq & 0xff;

  // `node`
  for (var n = 0; n < 6; ++n) {
    b[i + n] = node[n];
  }

  return buf ? buf : bytesToUuid(b);
}

module.exports = v1;

},{"./lib/bytesToUuid":358,"./lib/rng":359}],361:[function(require,module,exports){
var rng = require('./lib/rng');
var bytesToUuid = require('./lib/bytesToUuid');

function v4(options, buf, offset) {
  var i = buf && offset || 0;

  if (typeof(options) == 'string') {
    buf = options === 'binary' ? new Array(16) : null;
    options = null;
  }
  options = options || {};

  var rnds = options.random || (options.rng || rng)();

  // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`
  rnds[6] = (rnds[6] & 0x0f) | 0x40;
  rnds[8] = (rnds[8] & 0x3f) | 0x80;

  // Copy bytes to buffer, if provided
  if (buf) {
    for (var ii = 0; ii < 16; ++ii) {
      buf[i + ii] = rnds[ii];
    }
  }

  return buf || bytesToUuid(rnds);
}

module.exports = v4;

},{"./lib/bytesToUuid":358,"./lib/rng":359}],362:[function(require,module,exports){
var indexOf = function (xs, item) {
    if (xs.indexOf) return xs.indexOf(item);
    else for (var i = 0; i < xs.length; i++) {
        if (xs[i] === item) return i;
    }
    return -1;
};
var Object_keys = function (obj) {
    if (Object.keys) return Object.keys(obj)
    else {
        var res = [];
        for (var key in obj) res.push(key)
        return res;
    }
};

var forEach = function (xs, fn) {
    if (xs.forEach) return xs.forEach(fn)
    else for (var i = 0; i < xs.length; i++) {
        fn(xs[i], i, xs);
    }
};

var defineProp = (function() {
    try {
        Object.defineProperty({}, '_', {});
        return function(obj, name, value) {
            Object.defineProperty(obj, name, {
                writable: true,
                enumerable: false,
                configurable: true,
                value: value
            })
        };
    } catch(e) {
        return function(obj, name, value) {
            obj[name] = value;
        };
    }
}());

var globals = ['Array', 'Boolean', 'Date', 'Error', 'EvalError', 'Function',
'Infinity', 'JSON', 'Math', 'NaN', 'Number', 'Object', 'RangeError',
'ReferenceError', 'RegExp', 'String', 'SyntaxError', 'TypeError', 'URIError',
'decodeURI', 'decodeURIComponent', 'encodeURI', 'encodeURIComponent', 'escape',
'eval', 'isFinite', 'isNaN', 'parseFloat', 'parseInt', 'undefined', 'unescape'];

function Context() {}
Context.prototype = {};

var Script = exports.Script = function NodeScript (code) {
    if (!(this instanceof Script)) return new Script(code);
    this.code = code;
};

Script.prototype.runInContext = function (context) {
    if (!(context instanceof Context)) {
        throw new TypeError("needs a 'context' argument.");
    }
    
    var iframe = document.createElement('iframe');
    if (!iframe.style) iframe.style = {};
    iframe.style.display = 'none';
    
    document.body.appendChild(iframe);
    
    var win = iframe.contentWindow;
    var wEval = win.eval, wExecScript = win.execScript;

    if (!wEval && wExecScript) {
        // win.eval() magically appears when this is called in IE:
        wExecScript.call(win, 'null');
        wEval = win.eval;
    }
    
    forEach(Object_keys(context), function (key) {
        win[key] = context[key];
    });
    forEach(globals, function (key) {
        if (context[key]) {
            win[key] = context[key];
        }
    });
    
    var winKeys = Object_keys(win);

    var res = wEval.call(win, this.code);
    
    forEach(Object_keys(win), function (key) {
        // Avoid copying circular objects like `top` and `window` by only
        // updating existing context properties or new properties in the `win`
        // that was only introduced after the eval.
        if (key in context || indexOf(winKeys, key) === -1) {
            context[key] = win[key];
        }
    });

    forEach(globals, function (key) {
        if (!(key in context)) {
            defineProp(context, key, win[key]);
        }
    });
    
    document.body.removeChild(iframe);
    
    return res;
};

Script.prototype.runInThisContext = function () {
    return eval(this.code); // maybe...
};

Script.prototype.runInNewContext = function (context) {
    var ctx = Script.createContext(context);
    var res = this.runInContext(ctx);

    if (context) {
        forEach(Object_keys(ctx), function (key) {
            context[key] = ctx[key];
        });
    }

    return res;
};

forEach(Object_keys(Script.prototype), function (name) {
    exports[name] = Script[name] = function (code) {
        var s = Script(code);
        return s[name].apply(s, [].slice.call(arguments, 1));
    };
});

exports.isContext = function (context) {
    return context instanceof Context;
};

exports.createScript = function (code) {
    return exports.Script(code);
};

exports.createContext = Script.createContext = function (context) {
    var copy = new Context();
    if(typeof context === 'object') {
        forEach(Object_keys(context), function (key) {
            copy[key] = context[key];
        });
    }
    return copy;
};

},{}]},{},[15])(15)
});
