moment.js

//! moment.js
//! version : 2.10.6
//! authors : Tim Wood, Iskren Chernev, Moment.js contributors
//! license : MIT
//! momentjs.com

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
    typeof define === 'function' && define.amd ? define(factory) :
      global.moment = factory()
}(this, function () { 'use strict';

  var hookCallback;

  function utils_hooks__hooks () {
    return hookCallback.apply(null, arguments);
  }

  // This is done to register the method called with moment()
  // without creating circular dependencies.
  function setHookCallback (callback) {
    hookCallback = callback;
  }

  function isArray(input) {
    return Object.prototype.toString.call(input) === '[object Array]';
  }

  function isDate(input) {
    return input instanceof Date || Object.prototype.toString.call(input) === '[object Date]';
  }

  function map(arr, fn) {
    var res = [], i;
    for (i = 0; i < arr.length; ++i) {
      res.push(fn(arr[i], i));
    }
    return res;
  }

  function hasOwnProp(a, b) {
    return Object.prototype.hasOwnProperty.call(a, b);
  }

  function extend(a, b) {
    for (var i in b) {
      if (hasOwnProp(b, i)) {
        a[i] = b[i];
      }
    }

    if (hasOwnProp(b, 'toString')) {
      a.toString = b.toString;
    }

    if (hasOwnProp(b, 'valueOf')) {
      a.valueOf = b.valueOf;
    }

    return a;
  }

  function create_utc__createUTC (input, format, locale, strict) {
    return createLocalOrUTC(input, format, locale, strict, true).utc();
  }

  function defaultParsingFlags() {
    // We need to deep clone this object.
    return {
      empty           : false,
      unusedTokens    : [],
      unusedInput     : [],
      overflow        : -2,
      charsLeftOver   : 0,
      nullInput       : false,
      invalidMonth    : null,
      invalidFormat   : false,
      userInvalidated : false,
      iso             : false
    };
  }

  function getParsingFlags(m) {
    if (m._pf == null) {
      m._pf = defaultParsingFlags();
    }
    return m._pf;
  }

  function valid__isValid(m) {
    if (m._isValid == null) {
      var flags = getParsingFlags(m);
      m._isValid = !isNaN(m._d.getTime()) &&
        flags.overflow < 0 &&
        !flags.empty &&
        !flags.invalidMonth &&
        !flags.invalidWeekday &&
        !flags.nullInput &&
        !flags.invalidFormat &&
        !flags.userInvalidated;

      if (m._strict) {
        m._isValid = m._isValid &&
          flags.charsLeftOver === 0 &&
          flags.unusedTokens.length === 0 &&
          flags.bigHour === undefined;
      }
    }
    return m._isValid;
  }

  function valid__createInvalid (flags) {
    var m = create_utc__createUTC(NaN);
    if (flags != null) {
      extend(getParsingFlags(m), flags);
    }
    else {
      getParsingFlags(m).userInvalidated = true;
    }

    return m;
  }

  var momentProperties = utils_hooks__hooks.momentProperties = [];

  function copyConfig(to, from) {
    var i, prop, val;

    if (typeof from._isAMomentObject !== 'undefined') {
      to._isAMomentObject = from._isAMomentObject;
    }
    if (typeof from._i !== 'undefined') {
      to._i = from._i;
    }
    if (typeof from._f !== 'undefined') {
      to._f = from._f;
    }
    if (typeof from._l !== 'undefined') {
      to._l = from._l;
    }
    if (typeof from._strict !== 'undefined') {
      to._strict = from._strict;
    }
    if (typeof from._tzm !== 'undefined') {
      to._tzm = from._tzm;
    }
    if (typeof from._isUTC !== 'undefined') {
      to._isUTC = from._isUTC;
    }
    if (typeof from._offset !== 'undefined') {
      to._offset = from._offset;
    }
    if (typeof from._pf !== 'undefined') {
      to._pf = getParsingFlags(from);
    }
    if (typeof from._locale !== 'undefined') {
      to._locale = from._locale;
    }

    if (momentProperties.length > 0) {
      for (i in momentProperties) {
        prop = momentProperties[i];
        val = from[prop];
        if (typeof val !== 'undefined') {
          to[prop] = val;
        }
      }
    }

    return to;
  }

  var updateInProgress = false;

  // Moment prototype object
  function Moment(config) {
    copyConfig(this, config);
    this._d = new Date(config._d != null ? config._d.getTime() : NaN);
    // Prevent infinite loop in case updateOffset creates new moment
    // objects.
    if (updateInProgress === false) {
      updateInProgress = true;
      utils_hooks__hooks.updateOffset(this);
      updateInProgress = false;
    }
  }

  function isMoment (obj) {
    return obj instanceof Moment || (obj != null && obj._isAMomentObject != null);
  }

  function absFloor (number) {
    if (number < 0) {
      return Math.ceil(number);
    } else {
      return Math.floor(number);
    }
  }

  function toInt(argumentForCoercion) {
    var coercedNumber = +argumentForCoercion,
      value = 0;

    if (coercedNumber !== 0 && isFinite(coercedNumber)) {
      value = absFloor(coercedNumber);
    }

    return value;
  }

  function compareArrays(array1, array2, dontConvert) {
    var len = Math.min(array1.length, array2.length),
      lengthDiff = Math.abs(array1.length - array2.length),
      diffs = 0,
      i;
    for (i = 0; i < len; i++) {
      if ((dontConvert && array1[i] !== array2[i]) ||
        (!dontConvert && toInt(array1[i]) !== toInt(array2[i]))) {
        diffs++;
      }
    }
    return diffs + lengthDiff;
  }

  function Locale() {
  }

  var locales = {};
  var globalLocale;

  function normalizeLocale(key) {
    return key ? key.toLowerCase().replace('_', '-') : key;
  }

  // pick the locale from the array
  // try ['en-au', 'en-gb'] as 'en-au', 'en-gb', 'en', as in move through the list trying each
  // substring from most specific to least, but move to the next array item if it's a more specific variant than the current root
  function chooseLocale(names) {
    var i = 0, j, next, locale, split;

    while (i < names.length) {
      split = normalizeLocale(names[i]).split('-');
      j = split.length;
      next = normalizeLocale(names[i + 1]);
      next = next ? next.split('-') : null;
      while (j > 0) {
        locale = loadLocale(split.slice(0, j).join('-'));
        if (locale) {
          return locale;
        }
        if (next && next.length >= j && compareArrays(split, next, true) >= j - 1) {
          //the next array item is better than a shallower substring of this one
          break;
        }
        j--;
      }
      i++;
    }
    return null;
  }

  function loadLocale(name) {
    var oldLocale = null;
    // TODO: Find a better way to register and load all the locales in Node
    if (!locales[name] && typeof module !== 'undefined' &&
      module && module.exports) {
      try {
        oldLocale = globalLocale._abbr;
        require('./locale/' + name);
        // because defineLocale currently also sets the global locale, we
        // want to undo that for lazy loaded locales
        locale_locales__getSetGlobalLocale(oldLocale);
      } catch (e) { }
    }
    return locales[name];
  }

  // This function will load locale and then set the global locale.  If
  // no arguments are passed in, it will simply return the current global
  // locale key.
  function locale_locales__getSetGlobalLocale (key, values) {
    var data;
    if (key) {
      if (typeof values === 'undefined') {
        data = locale_locales__getLocale(key);
      }
      else {
        data = defineLocale(key, values);
      }

      if (data) {
        // moment.duration._locale = moment._locale = data;
        globalLocale = data;
      }
    }

    return globalLocale._abbr;
  }

  function defineLocale (name, values) {
    if (values !== null) {
      values.abbr = name;
      locales[name] = locales[name] || new Locale();
      locales[name].set(values);

      // backwards compat for now: also set the locale
      locale_locales__getSetGlobalLocale(name);

      return locales[name];
    } else {
      // useful for testing
      delete locales[name];
      return null;
    }
  }

  // returns locale data
  function locale_locales__getLocale (key) {
    var locale;

    if (key && key._locale && key._locale._abbr) {
      key = key._locale._abbr;
    }

    if (!key) {
      return globalLocale;
    }

    if (!isArray(key)) {
      //short-circuit everything else
      locale = loadLocale(key);
      if (locale) {
        return locale;
      }
      key = [key];
    }

    return chooseLocale(key);
  }

  var aliases = {};

  function addUnitAlias (unit, shorthand) {
    var lowerCase = unit.toLowerCase();
    aliases[lowerCase] = aliases[lowerCase + 's'] = aliases[shorthand] = unit;
  }

  function normalizeUnits(units) {
    return typeof units === 'string' ? aliases[units] || aliases[units.toLowerCase()] : undefined;
  }

  function normalizeObjectUnits(inputObject) {
    var normalizedInput = {},
      normalizedProp,
      prop;

    for (prop in inputObject) {
      if (hasOwnProp(inputObject, prop)) {
        normalizedProp = normalizeUnits(prop);
        if (normalizedProp) {
          normalizedInput[normalizedProp] = inputObject[prop];
        }
      }
    }

    return normalizedInput;
  }

  function makeGetSet (unit, keepTime) {
    return function (value) {
      if (value != null) {
        get_set__set(this, unit, value);
        utils_hooks__hooks.updateOffset(this, keepTime);
        return this;
      } else {
        return get_set__get(this, unit);
      }
    };
  }

  function get_set__get (mom, unit) {
    return mom._d['get' + (mom._isUTC ? 'UTC' : '') + unit]();
  }

  function get_set__set (mom, unit, value) {
    return mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](value);
  }

  // MOMENTS

  function getSet (units, value) {
    var unit;
    if (typeof units === 'object') {
      for (unit in units) {
        this.set(unit, units[unit]);
      }
    } else {
      units = normalizeUnits(units);
      if (typeof this[units] === 'function') {
        return this[units](value);
      }
    }
    return this;
  }

  function zeroFill(number, targetLength, forceSign) {
    var absNumber = '' + Math.abs(number),
      zerosToFill = targetLength - absNumber.length,
      sign = number >= 0;
    return (sign ? (forceSign ? '+' : '') : '-') +
      Math.pow(10, Math.max(0, zerosToFill)).toString().substr(1) + absNumber;
  }

  var formattingTokens = /(\[[^\[]*\])|(\\)?(Mo|MM?M?M?|Do|DDDo|DD?D?D?|ddd?d?|do?|w[o|w]?|W[o|W]?|Q|YYYYYY|YYYYY|YYYY|YY|gg(ggg?)?|GG(GGG?)?|e|E|a|A|hh?|HH?|mm?|ss?|S{1,9}|x|X|zz?|ZZ?|.)/g;

  var localFormattingTokens = /(\[[^\[]*\])|(\\)?(LTS|LT|LL?L?L?|l{1,4})/g;

  var formatFunctions = {};

  var formatTokenFunctions = {};

  // token:    'M'
  // padded:   ['MM', 2]
  // ordinal:  'Mo'
  // callback: function () { this.month() + 1 }
  function addFormatToken (token, padded, ordinal, callback) {
    var func = callback;
    if (typeof callback === 'string') {
      func = function () {
        return this[callback]();
      };
    }
    if (token) {
      formatTokenFunctions[token] = func;
    }
    if (padded) {
      formatTokenFunctions[padded[0]] = function () {
        return zeroFill(func.apply(this, arguments), padded[1], padded[2]);
      };
    }
    if (ordinal) {
      formatTokenFunctions[ordinal] = function () {
        return this.localeData().ordinal(func.apply(this, arguments), token);
      };
    }
  }

  function removeFormattingTokens(input) {
    if (input.match(/\[[\s\S]/)) {
      return input.replace(/^\[|\]$/g, '');
    }
    return input.replace(/\\/g, '');
  }

  function makeFormatFunction(format) {
    var array = format.match(formattingTokens), i, length;

    for (i = 0, length = array.length; i < length; i++) {
      if (formatTokenFunctions[array[i]]) {
        array[i] = formatTokenFunctions[array[i]];
      } else {
        array[i] = removeFormattingTokens(array[i]);
      }
    }

    return function (mom) {
      var output = '';
      for (i = 0; i < length; i++) {
        output += array[i] instanceof Function ? array[i].call(mom, format) : array[i];
      }
      return output;
    };
  }

  // format date using native date object
  function formatMoment(m, format) {
    if (!m.isValid()) {
      return m.localeData().invalidDate();
    }

    format = expandFormat(format, m.localeData());
    formatFunctions[format] = formatFunctions[format] || makeFormatFunction(format);

    return formatFunctions[format](m);
  }

  function expandFormat(format, locale) {
    var i = 5;

    function replaceLongDateFormatTokens(input) {
      return locale.longDateFormat(input) || input;
    }

    localFormattingTokens.lastIndex = 0;
    while (i >= 0 && localFormattingTokens.test(format)) {
      format = format.replace(localFormattingTokens, replaceLongDateFormatTokens);
      localFormattingTokens.lastIndex = 0;
      i -= 1;
    }

    return format;
  }

  var match1         = /\d/;            //       0 - 9
  var match2         = /\d\d/;          //      00 - 99
  var match3         = /\d{3}/;         //     000 - 999
  var match4         = /\d{4}/;         //    0000 - 9999
  var match6         = /[+-]?\d{6}/;    // -999999 - 999999
  var match1to2      = /\d\d?/;         //       0 - 99
  var match1to3      = /\d{1,3}/;       //       0 - 999
  var match1to4      = /\d{1,4}/;       //       0 - 9999
  var match1to6      = /[+-]?\d{1,6}/;  // -999999 - 999999

  var matchUnsigned  = /\d+/;           //       0 - inf
  var matchSigned    = /[+-]?\d+/;      //    -inf - inf

  var matchOffset    = /Z|[+-]\d\d:?\d\d/gi; // +00:00 -00:00 +0000 -0000 or Z

  var matchTimestamp = /[+-]?\d+(\.\d{1,3})?/; // 123456789 123456789.123

  // any word (or two) characters or numbers including two/three word month in arabic.
  var matchWord = /[0-9]*['a-z\u00A0-\u05FF\u0700-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+|[\u0600-\u06FF\/]+(\s*?[\u0600-\u06FF]+){1,2}/i;

  var regexes = {};

  function isFunction (sth) {
    // https://github.com/moment/moment/issues/2325
    return typeof sth === 'function' &&
      Object.prototype.toString.call(sth) === '[object Function]';
  }


  function addRegexToken (token, regex, strictRegex) {
    regexes[token] = isFunction(regex) ? regex : function (isStrict) {
      return (isStrict && strictRegex) ? strictRegex : regex;
    };
  }

  function getParseRegexForToken (token, config) {
    if (!hasOwnProp(regexes, token)) {
      return new RegExp(unescapeFormat(token));
    }

    return regexes[token](config._strict, config._locale);
  }

  // Code from http://stackoverflow.com/questions/3561493/is-there-a-regexp-escape-function-in-javascript
  function unescapeFormat(s) {
    return s.replace('\\', '').replace(/\\(\[)|\\(\])|\[([^\]\[]*)\]|\\(.)/g, function (matched, p1, p2, p3, p4) {
      return p1 || p2 || p3 || p4;
    }).replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
  }

  var tokens = {};

  function addParseToken (token, callback) {
    var i, func = callback;
    if (typeof token === 'string') {
      token = [token];
    }
    if (typeof callback === 'number') {
      func = function (input, array) {
        array[callback] = toInt(input);
      };
    }
    for (i = 0; i < token.length; i++) {
      tokens[token[i]] = func;
    }
  }

  function addWeekParseToken (token, callback) {
    addParseToken(token, function (input, array, config, token) {
      config._w = config._w || {};
      callback(input, config._w, config, token);
    });
  }

  function addTimeToArrayFromToken(token, input, config) {
    if (input != null && hasOwnProp(tokens, token)) {
      tokens[token](input, config._a, config, token);
    }
  }

  var YEAR = 0;
  var MONTH = 1;
  var DATE = 2;
  var HOUR = 3;
  var MINUTE = 4;
  var SECOND = 5;
  var MILLISECOND = 6;

  function daysInMonth(year, month) {
    return new Date(Date.UTC(year, month + 1, 0)).getUTCDate();
  }

  // FORMATTING

  addFormatToken('M', ['MM', 2], 'Mo', function () {
    return this.month() + 1;
  });

  addFormatToken('MMM', 0, 0, function (format) {
    return this.localeData().monthsShort(this, format);
  });

  addFormatToken('MMMM', 0, 0, function (format) {
    return this.localeData().months(this, format);
  });

  // ALIASES

  addUnitAlias('month', 'M');

  // PARSING

  addRegexToken('M',    match1to2);
  addRegexToken('MM',   match1to2, match2);
  addRegexToken('MMM',  matchWord);
  addRegexToken('MMMM', matchWord);

  addParseToken(['M', 'MM'], function (input, array) {
    array[MONTH] = toInt(input) - 1;
  });

  addParseToken(['MMM', 'MMMM'], function (input, array, config, token) {
    var month = config._locale.monthsParse(input, token, config._strict);
    // if we didn't find a month name, mark the date as invalid.
    if (month != null) {
      array[MONTH] = month;
    } else {
      getParsingFlags(config).invalidMonth = input;
    }
  });

  // LOCALES

  var defaultLocaleMonths = 'January_February_March_April_May_June_July_August_September_October_November_December'.split('_');
  function localeMonths (m) {
    return this._months[m.month()];
  }

  var defaultLocaleMonthsShort = 'Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec'.split('_');
  function localeMonthsShort (m) {
    return this._monthsShort[m.month()];
  }

  function localeMonthsParse (monthName, format, strict) {
    var i, mom, regex;

    if (!this._monthsParse) {
      this._monthsParse = [];
      this._longMonthsParse = [];
      this._shortMonthsParse = [];
    }

    for (i = 0; i < 12; i++) {
      // make the regex if we don't have it already
      mom = create_utc__createUTC([2000, i]);
      if (strict && !this._longMonthsParse[i]) {
        this._longMonthsParse[i] = new RegExp('^' + this.months(mom, '').replace('.', '') + '$', 'i');
        this._shortMonthsParse[i] = new RegExp('^' + this.monthsShort(mom, '').replace('.', '') + '$', 'i');
      }
      if (!strict && !this._monthsParse[i]) {
        regex = '^' + this.months(mom, '') + '|^' + this.monthsShort(mom, '');
        this._monthsParse[i] = new RegExp(regex.replace('.', ''), 'i');
      }
      // test the regex
      if (strict && format === 'MMMM' && this._longMonthsParse[i].test(monthName)) {
        return i;
      } else if (strict && format === 'MMM' && this._shortMonthsParse[i].test(monthName)) {
        return i;
      } else if (!strict && this._monthsParse[i].test(monthName)) {
        return i;
      }
    }
  }

  // MOMENTS

  function setMonth (mom, value) {
    var dayOfMonth;

    // TODO: Move this out of here!
    if (typeof value === 'string') {
      value = mom.localeData().monthsParse(value);
      // TODO: Another silent failure?
      if (typeof value !== 'number') {
        return mom;
      }
    }

    dayOfMonth = Math.min(mom.date(), daysInMonth(mom.year(), value));
    mom._d['set' + (mom._isUTC ? 'UTC' : '') + 'Month'](value, dayOfMonth);
    return mom;
  }

  function getSetMonth (value) {
    if (value != null) {
      setMonth(this, value);
      utils_hooks__hooks.updateOffset(this, true);
      return this;
    } else {
      return get_set__get(this, 'Month');
    }
  }

  function getDaysInMonth () {
    return daysInMonth(this.year(), this.month());
  }

  function checkOverflow (m) {
    var overflow;
    var a = m._a;

    if (a && getParsingFlags(m).overflow === -2) {
      overflow =
        a[MONTH]       < 0 || a[MONTH]       > 11  ? MONTH :
          a[DATE]        < 1 || a[DATE]        > daysInMonth(a[YEAR], a[MONTH]) ? DATE :
            a[HOUR]        < 0 || a[HOUR]        > 24 || (a[HOUR] === 24 && (a[MINUTE] !== 0 || a[SECOND] !== 0 || a[MILLISECOND] !== 0)) ? HOUR :
              a[MINUTE]      < 0 || a[MINUTE]      > 59  ? MINUTE :
                a[SECOND]      < 0 || a[SECOND]      > 59  ? SECOND :
                  a[MILLISECOND] < 0 || a[MILLISECOND] > 999 ? MILLISECOND :
                    -1;

      if (getParsingFlags(m)._overflowDayOfYear && (overflow < YEAR || overflow > DATE)) {
        overflow = DATE;
      }

      getParsingFlags(m).overflow = overflow;
    }

    return m;
  }

  function warn(msg) {
    if (utils_hooks__hooks.suppressDeprecationWarnings === false && typeof console !== 'undefined' && console.warn) {
      console.warn('Deprecation warning: ' + msg);
    }
  }

  function deprecate(msg, fn) {
    var firstTime = true;

    return extend(function () {
      if (firstTime) {
        warn(msg + '\n' + (new Error()).stack);
        firstTime = false;
      }
      return fn.apply(this, arguments);
    }, fn);
  }

  var deprecations = {};

  function deprecateSimple(name, msg) {
    if (!deprecations[name]) {
      warn(msg);
      deprecations[name] = true;
    }
  }

  utils_hooks__hooks.suppressDeprecationWarnings = false;

  var from_string__isoRegex = /^\s*(?:[+-]\d{6}|\d{4})-(?:(\d\d-\d\d)|(W\d\d$)|(W\d\d-\d)|(\d\d\d))((T| )(\d\d(:\d\d(:\d\d(\.\d+)?)?)?)?([\+\-]\d\d(?::?\d\d)?|\s*Z)?)?$/;

  var isoDates = [
    ['YYYYYY-MM-DD', /[+-]\d{6}-\d{2}-\d{2}/],
    ['YYYY-MM-DD', /\d{4}-\d{2}-\d{2}/],
    ['GGGG-[W]WW-E', /\d{4}-W\d{2}-\d/],
    ['GGGG-[W]WW', /\d{4}-W\d{2}/],
    ['YYYY-DDD', /\d{4}-\d{3}/]
  ];

  // iso time formats and regexes
  var isoTimes = [
    ['HH:mm:ss.SSSS', /(T| )\d\d:\d\d:\d\d\.\d+/],
    ['HH:mm:ss', /(T| )\d\d:\d\d:\d\d/],
    ['HH:mm', /(T| )\d\d:\d\d/],
    ['HH', /(T| )\d\d/]
  ];

  var aspNetJsonRegex = /^\/?Date\((\-?\d+)/i;

  // date from iso format
  function configFromISO(config) {
    var i, l,
      string = config._i,
      match = from_string__isoRegex.exec(string);

    if (match) {
      getParsingFlags(config).iso = true;
      for (i = 0, l = isoDates.length; i < l; i++) {
        if (isoDates[i][1].exec(string)) {
          config._f = isoDates[i][0];
          break;
        }
      }
      for (i = 0, l = isoTimes.length; i < l; i++) {
        if (isoTimes[i][1].exec(string)) {
          // match[6] should be 'T' or space
          config._f += (match[6] || ' ') + isoTimes[i][0];
          break;
        }
      }
      if (string.match(matchOffset)) {
        config._f += 'Z';
      }
      configFromStringAndFormat(config);
    } else {
      config._isValid = false;
    }
  }

  // date from iso format or fallback
  function configFromString(config) {
    var matched = aspNetJsonRegex.exec(config._i);

    if (matched !== null) {
      config._d = new Date(+matched[1]);
      return;
    }

    configFromISO(config);
    if (config._isValid === false) {
      delete config._isValid;
      utils_hooks__hooks.createFromInputFallback(config);
    }
  }

  utils_hooks__hooks.createFromInputFallback = deprecate(
    'moment construction falls back to js Date. This is ' +
    'discouraged and will be removed in upcoming major ' +
    'release. Please refer to ' +
    'https://github.com/moment/moment/issues/1407 for more info.',
    function (config) {
      config._d = new Date(config._i + (config._useUTC ? ' UTC' : ''));
    }
  );

  function createDate (y, m, d, h, M, s, ms) {
    //can't just apply() to create a date:
    //http://stackoverflow.com/questions/181348/instantiating-a-javascript-object-by-calling-prototype-constructor-apply
    var date = new Date(y, m, d, h, M, s, ms);

    //the date constructor doesn't accept years < 1970
    if (y < 1970) {
      date.setFullYear(y);
    }
    return date;
  }

  function createUTCDate (y) {
    var date = new Date(Date.UTC.apply(null, arguments));
    if (y < 1970) {
      date.setUTCFullYear(y);
    }
    return date;
  }

  addFormatToken(0, ['YY', 2], 0, function () {
    return this.year() % 100;
  });

  addFormatToken(0, ['YYYY',   4],       0, 'year');
  addFormatToken(0, ['YYYYY',  5],       0, 'year');
  addFormatToken(0, ['YYYYYY', 6, true], 0, 'year');

  // ALIASES

  addUnitAlias('year', 'y');

  // PARSING

  addRegexToken('Y',      matchSigned);
  addRegexToken('YY',     match1to2, match2);
  addRegexToken('YYYY',   match1to4, match4);
  addRegexToken('YYYYY',  match1to6, match6);
  addRegexToken('YYYYYY', match1to6, match6);

  addParseToken(['YYYYY', 'YYYYYY'], YEAR);
  addParseToken('YYYY', function (input, array) {
    array[YEAR] = input.length === 2 ? utils_hooks__hooks.parseTwoDigitYear(input) : toInt(input);
  });
  addParseToken('YY', function (input, array) {
    array[YEAR] = utils_hooks__hooks.parseTwoDigitYear(input);
  });

  // HELPERS

  function daysInYear(year) {
    return isLeapYear(year) ? 366 : 365;
  }

  function isLeapYear(year) {
    return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
  }

  // HOOKS

  utils_hooks__hooks.parseTwoDigitYear = function (input) {
    return toInt(input) + (toInt(input) > 68 ? 1900 : 2000);
  };

  // MOMENTS

  var getSetYear = makeGetSet('FullYear', false);

  function getIsLeapYear () {
    return isLeapYear(this.year());
  }

  addFormatToken('w', ['ww', 2], 'wo', 'week');
  addFormatToken('W', ['WW', 2], 'Wo', 'isoWeek');

  // ALIASES

  addUnitAlias('week', 'w');
  addUnitAlias('isoWeek', 'W');

  // PARSING

  addRegexToken('w',  match1to2);
  addRegexToken('ww', match1to2, match2);
  addRegexToken('W',  match1to2);
  addRegexToken('WW', match1to2, match2);

  addWeekParseToken(['w', 'ww', 'W', 'WW'], function (input, week, config, token) {
    week[token.substr(0, 1)] = toInt(input);
  });

  // HELPERS

  // firstDayOfWeek       0 = sun, 6 = sat
  //                      the day of the week that starts the week
  //                      (usually sunday or monday)
  // firstDayOfWeekOfYear 0 = sun, 6 = sat
  //                      the first week is the week that contains the first
  //                      of this day of the week
  //                      (eg. ISO weeks use thursday (4))
  function weekOfYear(mom, firstDayOfWeek, firstDayOfWeekOfYear) {
    var end = firstDayOfWeekOfYear - firstDayOfWeek,
      daysToDayOfWeek = firstDayOfWeekOfYear - mom.day(),
      adjustedMoment;


    if (daysToDayOfWeek > end) {
      daysToDayOfWeek -= 7;
    }

    if (daysToDayOfWeek < end - 7) {
      daysToDayOfWeek += 7;
    }

    adjustedMoment = local__createLocal(mom).add(daysToDayOfWeek, 'd');
    return {
      week: Math.ceil(adjustedMoment.dayOfYear() / 7),
      year: adjustedMoment.year()
    };
  }

  // LOCALES

  function localeWeek (mom) {
    return weekOfYear(mom, this._week.dow, this._week.doy).week;
  }

  var defaultLocaleWeek = {
    dow : 0, // Sunday is the first day of the week.
    doy : 6  // The week that contains Jan 1st is the first week of the year.
  };

  function localeFirstDayOfWeek () {
    return this._week.dow;
  }

  function localeFirstDayOfYear () {
    return this._week.doy;
  }

  // MOMENTS

  function getSetWeek (input) {
    var week = this.localeData().week(this);
    return input == null ? week : this.add((input - week) * 7, 'd');
  }

  function getSetISOWeek (input) {
    var week = weekOfYear(this, 1, 4).week;
    return input == null ? week : this.add((input - week) * 7, 'd');
  }

  addFormatToken('DDD', ['DDDD', 3], 'DDDo', 'dayOfYear');

  // ALIASES

  addUnitAlias('dayOfYear', 'DDD');

  // PARSING

  addRegexToken('DDD',  match1to3);
  addRegexToken('DDDD', match3);
  addParseToken(['DDD', 'DDDD'], function (input, array, config) {
    config._dayOfYear = toInt(input);
  });

  // HELPERS

  //http://en.wikipedia.org/wiki/ISO_week_date#Calculating_a_date_given_the_year.2C_week_number_and_weekday
  function dayOfYearFromWeeks(year, week, weekday, firstDayOfWeekOfYear, firstDayOfWeek) {
    var week1Jan = 6 + firstDayOfWeek - firstDayOfWeekOfYear, janX = createUTCDate(year, 0, 1 + week1Jan), d = janX.getUTCDay(), dayOfYear;
    if (d < firstDayOfWeek) {
      d += 7;
    }

    weekday = weekday != null ? 1 * weekday : firstDayOfWeek;

    dayOfYear = 1 + week1Jan + 7 * (week - 1) - d + weekday;

    return {
      year: dayOfYear > 0 ? year : year - 1,
      dayOfYear: dayOfYear > 0 ?  dayOfYear : daysInYear(year - 1) + dayOfYear
    };
  }

  // MOMENTS

  function getSetDayOfYear (input) {
    var dayOfYear = Math.round((this.clone().startOf('day') - this.clone().startOf('year')) / 864e5) + 1;
    return input == null ? dayOfYear : this.add((input - dayOfYear), 'd');
  }

  // Pick the first defined of two or three arguments.
  function defaults(a, b, c) {
    if (a != null) {
      return a;
    }
    if (b != null) {
      return b;
    }
    return c;
  }

  function currentDateArray(config) {
    var now = new Date();
    if (config._useUTC) {
      return [now.getUTCFullYear(), now.getUTCMonth(), now.getUTCDate()];
    }
    return [now.getFullYear(), now.getMonth(), now.getDate()];
  }

  // convert an array to a date.
  // the array should mirror the parameters below
  // note: all values past the year are optional and will default to the lowest possible value.
  // [year, month, day , hour, minute, second, millisecond]
  function configFromArray (config) {
    var i, date, input = [], currentDate, yearToUse;

    if (config._d) {
      return;
    }

    currentDate = currentDateArray(config);

    //compute day of the year from weeks and weekdays
    if (config._w && config._a[DATE] == null && config._a[MONTH] == null) {
      dayOfYearFromWeekInfo(config);
    }

    //if the day of the year is set, figure out what it is
    if (config._dayOfYear) {
      yearToUse = defaults(config._a[YEAR], currentDate[YEAR]);

      if (config._dayOfYear > daysInYear(yearToUse)) {
        getParsingFlags(config)._overflowDayOfYear = true;
      }

      date = createUTCDate(yearToUse, 0, config._dayOfYear);
      config._a[MONTH] = date.getUTCMonth();
      config._a[DATE] = date.getUTCDate();
    }

    // Default to current date.
    // * if no year, month, day of month are given, default to today
    // * if day of month is given, default month and year
    // * if month is given, default only year
    // * if year is given, don't default anything
    for (i = 0; i < 3 && config._a[i] == null; ++i) {
      config._a[i] = input[i] = currentDate[i];
    }

    // Zero out whatever was not defaulted, including time
    for (; i < 7; i++) {
      config._a[i] = input[i] = (config._a[i] == null) ? (i === 2 ? 1 : 0) : config._a[i];
    }

    // Check for 24:00:00.000
    if (config._a[HOUR] === 24 &&
      config._a[MINUTE] === 0 &&
      config._a[SECOND] === 0 &&
      config._a[MILLISECOND] === 0) {
      config._nextDay = true;
      config._a[HOUR] = 0;
    }

    config._d = (config._useUTC ? createUTCDate : createDate).apply(null, input);
    // Apply timezone offset from input. The actual utcOffset can be changed
    // with parseZone.
    if (config._tzm != null) {
      config._d.setUTCMinutes(config._d.getUTCMinutes() - config._tzm);
    }

    if (config._nextDay) {
      config._a[HOUR] = 24;
    }
  }

  function dayOfYearFromWeekInfo(config) {
    var w, weekYear, week, weekday, dow, doy, temp;

    w = config._w;
    if (w.GG != null || w.W != null || w.E != null) {
      dow = 1;
      doy = 4;

      // TODO: We need to take the current isoWeekYear, but that depends on
      // how we interpret now (local, utc, fixed offset). So create
      // a now version of current config (take local/utc/offset flags, and
      // create now).
      weekYear = defaults(w.GG, config._a[YEAR], weekOfYear(local__createLocal(), 1, 4).year);
      week = defaults(w.W, 1);
      weekday = defaults(w.E, 1);
    } else {
      dow = config._locale._week.dow;
      doy = config._locale._week.doy;

      weekYear = defaults(w.gg, config._a[YEAR], weekOfYear(local__createLocal(), dow, doy).year);
      week = defaults(w.w, 1);

      if (w.d != null) {
        // weekday -- low day numbers are considered next week
        weekday = w.d;
        if (weekday < dow) {
          ++week;
        }
      } else if (w.e != null) {
        // local weekday -- counting starts from begining of week
        weekday = w.e + dow;
      } else {
        // default to begining of week
        weekday = dow;
      }
    }
    temp = dayOfYearFromWeeks(weekYear, week, weekday, doy, dow);

    config._a[YEAR] = temp.year;
    config._dayOfYear = temp.dayOfYear;
  }

  utils_hooks__hooks.ISO_8601 = function () {};

  // date from string and format string
  function configFromStringAndFormat(config) {
    // TODO: Move this to another part of the creation flow to prevent circular deps
    if (config._f === utils_hooks__hooks.ISO_8601) {
      configFromISO(config);
      return;
    }

    config._a = [];
    getParsingFlags(config).empty = true;

    // This array is used to make a Date, either with `new Date` or `Date.UTC`
    var string = '' + config._i,
      i, parsedInput, tokens, token, skipped,
      stringLength = string.length,
      totalParsedInputLength = 0;

    tokens = expandFormat(config._f, config._locale).match(formattingTokens) || [];

    for (i = 0; i < tokens.length; i++) {
      token = tokens[i];
      parsedInput = (string.match(getParseRegexForToken(token, config)) || [])[0];
      if (parsedInput) {
        skipped = string.substr(0, string.indexOf(parsedInput));
        if (skipped.length > 0) {
          getParsingFlags(config).unusedInput.push(skipped);
        }
        string = string.slice(string.indexOf(parsedInput) + parsedInput.length);
        totalParsedInputLength += parsedInput.length;
      }
      // don't parse if it's not a known token
      if (formatTokenFunctions[token]) {
        if (parsedInput) {
          getParsingFlags(config).empty = false;
        }
        else {
          getParsingFlags(config).unusedTokens.push(token);
        }
        addTimeToArrayFromToken(token, parsedInput, config);
      }
      else if (config._strict && !parsedInput) {
        getParsingFlags(config).unusedTokens.push(token);
      }
    }

    // add remaining unparsed input length to the string
    getParsingFlags(config).charsLeftOver = stringLength - totalParsedInputLength;
    if (string.length > 0) {
      getParsingFlags(config).unusedInput.push(string);
    }

    // clear _12h flag if hour is <= 12
    if (getParsingFlags(config).bigHour === true &&
      config._a[HOUR] <= 12 &&
      config._a[HOUR] > 0) {
      getParsingFlags(config).bigHour = undefined;
    }
    // handle meridiem
    config._a[HOUR] = meridiemFixWrap(config._locale, config._a[HOUR], config._meridiem);

    configFromArray(config);
    checkOverflow(config);
  }


  function meridiemFixWrap (locale, hour, meridiem) {
    var isPm;

    if (meridiem == null) {
      // nothing to do
      return hour;
    }
    if (locale.meridiemHour != null) {
      return locale.meridiemHour(hour, meridiem);
    } else if (locale.isPM != null) {
      // Fallback
      isPm = locale.isPM(meridiem);
      if (isPm && hour < 12) {
        hour += 12;
      }
      if (!isPm && hour === 12) {
        hour = 0;
      }
      return hour;
    } else {
      // this is not supposed to happen
      return hour;
    }
  }

  function configFromStringAndArray(config) {
    var tempConfig,
      bestMoment,

      scoreToBeat,
      i,
      currentScore;

    if (config._f.length === 0) {
      getParsingFlags(config).invalidFormat = true;
      config._d = new Date(NaN);
      return;
    }

    for (i = 0; i < config._f.length; i++) {
      currentScore = 0;
      tempConfig = copyConfig({}, config);
      if (config._useUTC != null) {
        tempConfig._useUTC = config._useUTC;
      }
      tempConfig._f = config._f[i];
      configFromStringAndFormat(tempConfig);

      if (!valid__isValid(tempConfig)) {
        continue;
      }

      // if there is any input that was not parsed add a penalty for that format
      currentScore += getParsingFlags(tempConfig).charsLeftOver;

      //or tokens
      currentScore += getParsingFlags(tempConfig).unusedTokens.length * 10;

      getParsingFlags(tempConfig).score = currentScore;

      if (scoreToBeat == null || currentScore < scoreToBeat) {
        scoreToBeat = currentScore;
        bestMoment = tempConfig;
      }
    }

    extend(config, bestMoment || tempConfig);
  }

  function configFromObject(config) {
    if (config._d) {
      return;
    }

    var i = normalizeObjectUnits(config._i);
    config._a = [i.year, i.month, i.day || i.date, i.hour, i.minute, i.second, i.millisecond];

    configFromArray(config);
  }

  function createFromConfig (config) {
    var res = new Moment(checkOverflow(prepareConfig(config)));
    if (res._nextDay) {
      // Adding is smart enough around DST
      res.add(1, 'd');
      res._nextDay = undefined;
    }

    return res;
  }

  function prepareConfig (config) {
    var input = config._i,
      format = config._f;

    config._locale = config._locale || locale_locales__getLocale(config._l);

    if (input === null || (format === undefined && input === '')) {
      return valid__createInvalid({nullInput: true});
    }

    if (typeof input === 'string') {
      config._i = input = config._locale.preparse(input);
    }

    if (isMoment(input)) {
      return new Moment(checkOverflow(input));
    } else if (isArray(format)) {
      configFromStringAndArray(config);
    } else if (format) {
      configFromStringAndFormat(config);
    } else if (isDate(input)) {
      config._d = input;
    } else {
      configFromInput(config);
    }

    return config;
  }

  function configFromInput(config) {
    var input = config._i;
    if (input === undefined) {
      config._d = new Date();
    } else if (isDate(input)) {
      config._d = new Date(+input);
    } else if (typeof input === 'string') {
      configFromString(config);
    } else if (isArray(input)) {
      config._a = map(input.slice(0), function (obj) {
        return parseInt(obj, 10);
      });
      configFromArray(config);
    } else if (typeof(input) === 'object') {
      configFromObject(config);
    } else if (typeof(input) === 'number') {
      // from milliseconds
      config._d = new Date(input);
    } else {
      utils_hooks__hooks.createFromInputFallback(config);
    }
  }

  function createLocalOrUTC (input, format, locale, strict, isUTC) {
    var c = {};

    if (typeof(locale) === 'boolean') {
      strict = locale;
      locale = undefined;
    }
    // object construction must be done this way.
    // https://github.com/moment/moment/issues/1423
    c._isAMomentObject = true;
    c._useUTC = c._isUTC = isUTC;
    c._l = locale;
    c._i = input;
    c._f = format;
    c._strict = strict;

    return createFromConfig(c);
  }

  function local__createLocal (input, format, locale, strict) {
    return createLocalOrUTC(input, format, locale, strict, false);
  }

  var prototypeMin = deprecate(
    'moment().min is deprecated, use moment.min instead. https://github.com/moment/moment/issues/1548',
    function () {
      var other = local__createLocal.apply(null, arguments);
      return other < this ? this : other;
    }
  );

  var prototypeMax = deprecate(
    'moment().max is deprecated, use moment.max instead. https://github.com/moment/moment/issues/1548',
    function () {
      var other = local__createLocal.apply(null, arguments);
      return other > this ? this : other;
    }
  );

  // Pick a moment m from moments so that m[fn](other) is true for all
  // other. This relies on the function fn to be transitive.
  //
  // moments should either be an array of moment objects or an array, whose
  // first element is an array of moment objects.
  function pickBy(fn, moments) {
    var res, i;
    if (moments.length === 1 && isArray(moments[0])) {
      moments = moments[0];
    }
    if (!moments.length) {
      return local__createLocal();
    }
    res = moments[0];
    for (i = 1; i < moments.length; ++i) {
      if (!moments[i].isValid() || moments[i][fn](res)) {
        res = moments[i];
      }
    }
    return res;
  }

  // TODO: Use [].sort instead?
  function min () {
    var args = [].slice.call(arguments, 0);

    return pickBy('isBefore', args);
  }

  function max () {
    var args = [].slice.call(arguments, 0);

    return pickBy('isAfter', args);
  }

  function Duration (duration) {
    var normalizedInput = normalizeObjectUnits(duration),
      years = normalizedInput.year || 0,
      quarters = normalizedInput.quarter || 0,
      months = normalizedInput.month || 0,
      weeks = normalizedInput.week || 0,
      days = normalizedInput.day || 0,
      hours = normalizedInput.hour || 0,
      minutes = normalizedInput.minute || 0,
      seconds = normalizedInput.second || 0,
      milliseconds = normalizedInput.millisecond || 0;

    // representation for dateAddRemove
    this._milliseconds = +milliseconds +
      seconds * 1e3 + // 1000
      minutes * 6e4 + // 1000 * 60
      hours * 36e5; // 1000 * 60 * 60
    // Because of dateAddRemove treats 24 hours as different from a
    // day when working around DST, we need to store them separately
    this._days = +days +
      weeks * 7;
    // It is impossible translate months into days without knowing
    // which months you are are talking about, so we have to store
    // it separately.
    this._months = +months +
      quarters * 3 +
      years * 12;

    this._data = {};

    this._locale = locale_locales__getLocale();

    this._bubble();
  }

  function isDuration (obj) {
    return obj instanceof Duration;
  }

  function offset (token, separator) {
    addFormatToken(token, 0, 0, function () {
      var offset = this.utcOffset();
      var sign = '+';
      if (offset < 0) {
        offset = -offset;
        sign = '-';
      }
      return sign + zeroFill(~~(offset / 60), 2) + separator + zeroFill(~~(offset) % 60, 2);
    });
  }

  offset('Z', ':');
  offset('ZZ', '');

  // PARSING

  addRegexToken('Z',  matchOffset);
  addRegexToken('ZZ', matchOffset);
  addParseToken(['Z', 'ZZ'], function (input, array, config) {
    config._useUTC = true;
    config._tzm = offsetFromString(input);
  });

  // HELPERS

  // timezone chunker
  // '+10:00' > ['10',  '00']
  // '-1530'  > ['-15', '30']
  var chunkOffset = /([\+\-]|\d\d)/gi;

  function offsetFromString(string) {
    var matches = ((string || '').match(matchOffset) || []);
    var chunk   = matches[matches.length - 1] || [];
    var parts   = (chunk + '').match(chunkOffset) || ['-', 0, 0];
    var minutes = +(parts[1] * 60) + toInt(parts[2]);

    return parts[0] === '+' ? minutes : -minutes;
  }

  // Return a moment from input, that is local/utc/zone equivalent to model.
  function cloneWithOffset(input, model) {
    var res, diff;
    if (model._isUTC) {
      res = model.clone();
      diff = (isMoment(input) || isDate(input) ? +input : +local__createLocal(input)) - (+res);
      // Use low-level api, because this fn is low-level api.
      res._d.setTime(+res._d + diff);
      utils_hooks__hooks.updateOffset(res, false);
      return res;
    } else {
      return local__createLocal(input).local();
    }
  }

  function getDateOffset (m) {
    // On Firefox.24 Date#getTimezoneOffset returns a floating point.
    // https://github.com/moment/moment/pull/1871
    return -Math.round(m._d.getTimezoneOffset() / 15) * 15;
  }

  // HOOKS

  // This function will be called whenever a moment is mutated.
  // It is intended to keep the offset in sync with the timezone.
  utils_hooks__hooks.updateOffset = function () {};

  // MOMENTS

  // keepLocalTime = true means only change the timezone, without
  // affecting the local hour. So 5:31:26 +0300 --[utcOffset(2, true)]-->
  // 5:31:26 +0200 It is possible that 5:31:26 doesn't exist with offset
  // +0200, so we adjust the time as needed, to be valid.
  //
  // Keeping the time actually adds/subtracts (one hour)
  // from the actual represented time. That is why we call updateOffset
  // a second time. In case it wants us to change the offset again
  // _changeInProgress == true case, then we have to adjust, because
  // there is no such time in the given timezone.
  function getSetOffset (input, keepLocalTime) {
    var offset = this._offset || 0,
      localAdjust;
    if (input != null) {
      if (typeof input === 'string') {
        input = offsetFromString(input);
      }
      if (Math.abs(input) < 16) {
        input = input * 60;
      }
      if (!this._isUTC && keepLocalTime) {
        localAdjust = getDateOffset(this);
      }
      this._offset = input;
      this._isUTC = true;
      if (localAdjust != null) {
        this.add(localAdjust, 'm');
      }
      if (offset !== input) {
        if (!keepLocalTime || this._changeInProgress) {
          add_subtract__addSubtract(this, create__createDuration(input - offset, 'm'), 1, false);
        } else if (!this._changeInProgress) {
          this._changeInProgress = true;
          utils_hooks__hooks.updateOffset(this, true);
          this._changeInProgress = null;
        }
      }
      return this;
    } else {
      return this._isUTC ? offset : getDateOffset(this);
    }
  }

  function getSetZone (input, keepLocalTime) {
    if (input != null) {
      if (typeof input !== 'string') {
        input = -input;
      }

      this.utcOffset(input, keepLocalTime);

      return this;
    } else {
      return -this.utcOffset();
    }
  }

  function setOffsetToUTC (keepLocalTime) {
    return this.utcOffset(0, keepLocalTime);
  }

  function setOffsetToLocal (keepLocalTime) {
    if (this._isUTC) {
      this.utcOffset(0, keepLocalTime);
      this._isUTC = false;

      if (keepLocalTime) {
        this.subtract(getDateOffset(this), 'm');
      }
    }
    return this;
  }

  function setOffsetToParsedOffset () {
    if (this._tzm) {
      this.utcOffset(this._tzm);
    } else if (typeof this._i === 'string') {
      this.utcOffset(offsetFromString(this._i));
    }
    return this;
  }

  function hasAlignedHourOffset (input) {
    input = input ? local__createLocal(input).utcOffset() : 0;

    return (this.utcOffset() - input) % 60 === 0;
  }

  function isDaylightSavingTime () {
    return (
      this.utcOffset() > this.clone().month(0).utcOffset() ||
      this.utcOffset() > this.clone().month(5).utcOffset()
    );
  }

  function isDaylightSavingTimeShifted () {
    if (typeof this._isDSTShifted !== 'undefined') {
      return this._isDSTShifted;
    }

    var c = {};

    copyConfig(c, this);
    c = prepareConfig(c);

    if (c._a) {
      var other = c._isUTC ? create_utc__createUTC(c._a) : local__createLocal(c._a);
      this._isDSTShifted = this.isValid() &&
        compareArrays(c._a, other.toArray()) > 0;
    } else {
      this._isDSTShifted = false;
    }

    return this._isDSTShifted;
  }

  function isLocal () {
    return !this._isUTC;
  }

  function isUtcOffset () {
    return this._isUTC;
  }

  function isUtc () {
    return this._isUTC && this._offset === 0;
  }

  var aspNetRegex = /(\-)?(?:(\d*)\.)?(\d+)\:(\d+)(?:\:(\d+)\.?(\d{3})?)?/;

  // from http://docs.closure-library.googlecode.com/git/closure_goog_date_date.js.source.html
  // somewhat more in line with 4.4.3.2 2004 spec, but allows decimal anywhere
  var create__isoRegex = /^(-)?P(?:(?:([0-9,.]*)Y)?(?:([0-9,.]*)M)?(?:([0-9,.]*)D)?(?:T(?:([0-9,.]*)H)?(?:([0-9,.]*)M)?(?:([0-9,.]*)S)?)?|([0-9,.]*)W)$/;

  function create__createDuration (input, key) {
    var duration = input,
      // matching against regexp is expensive, do it on demand
      match = null,
      sign,
      ret,
      diffRes;

    if (isDuration(input)) {
      duration = {
        ms : input._milliseconds,
        d  : input._days,
        M  : input._months
      };
    } else if (typeof input === 'number') {
      duration = {};
      if (key) {
        duration[key] = input;
      } else {
        duration.milliseconds = input;
      }
    } else if (!!(match = aspNetRegex.exec(input))) {
      sign = (match[1] === '-') ? -1 : 1;
      duration = {
        y  : 0,
        d  : toInt(match[DATE])        * sign,
        h  : toInt(match[HOUR])        * sign,
        m  : toInt(match[MINUTE])      * sign,
        s  : toInt(match[SECOND])      * sign,
        ms : toInt(match[MILLISECOND]) * sign
      };
    } else if (!!(match = create__isoRegex.exec(input))) {
      sign = (match[1] === '-') ? -1 : 1;
      duration = {
        y : parseIso(match[2], sign),
        M : parseIso(match[3], sign),
        d : parseIso(match[4], sign),
        h : parseIso(match[5], sign),
        m : parseIso(match[6], sign),
        s : parseIso(match[7], sign),
        w : parseIso(match[8], sign)
      };
    } else if (duration == null) {// checks for null or undefined
      duration = {};
    } else if (typeof duration === 'object' && ('from' in duration || 'to' in duration)) {
      diffRes = momentsDifference(local__createLocal(duration.from), local__createLocal(duration.to));

      duration = {};
      duration.ms = diffRes.milliseconds;
      duration.M = diffRes.months;
    }

    ret = new Duration(duration);

    if (isDuration(input) && hasOwnProp(input, '_locale')) {
      ret._locale = input._locale;
    }

    return ret;
  }

  create__createDuration.fn = Duration.prototype;

  function parseIso (inp, sign) {
    // We'd normally use ~~inp for this, but unfortunately it also
    // converts floats to ints.
    // inp may be undefined, so careful calling replace on it.
    var res = inp && parseFloat(inp.replace(',', '.'));
    // apply sign while we're at it
    return (isNaN(res) ? 0 : res) * sign;
  }

  function positiveMomentsDifference(base, other) {
    var res = {milliseconds: 0, months: 0};

    res.months = other.month() - base.month() +
      (other.year() - base.year()) * 12;
    if (base.clone().add(res.months, 'M').isAfter(other)) {
      --res.months;
    }

    res.milliseconds = +other - +(base.clone().add(res.months, 'M'));

    return res;
  }

  function momentsDifference(base, other) {
    var res;
    other = cloneWithOffset(other, base);
    if (base.isBefore(other)) {
      res = positiveMomentsDifference(base, other);
    } else {
      res = positiveMomentsDifference(other, base);
      res.milliseconds = -res.milliseconds;
      res.months = -res.months;
    }

    return res;
  }

  function createAdder(direction, name) {
    return function (val, period) {
      var dur, tmp;
      //invert the arguments, but complain about it
      if (period !== null && !isNaN(+period)) {
        deprecateSimple(name, 'moment().' + name  + '(period, number) is deprecated. Please use moment().' + name + '(number, period).');
        tmp = val; val = period; period = tmp;
      }

      val = typeof val === 'string' ? +val : val;
      dur = create__createDuration(val, period);
      add_subtract__addSubtract(this, dur, direction);
      return this;
    };
  }

  function add_subtract__addSubtract (mom, duration, isAdding, updateOffset) {
    var milliseconds = duration._milliseconds,
      days = duration._days,
      months = duration._months;
    updateOffset = updateOffset == null ? true : updateOffset;

    if (milliseconds) {
      mom._d.setTime(+mom._d + milliseconds * isAdding);
    }
    if (days) {
      get_set__set(mom, 'Date', get_set__get(mom, 'Date') + days * isAdding);
    }
    if (months) {
      setMonth(mom, get_set__get(mom, 'Month') + months * isAdding);
    }
    if (updateOffset) {
      utils_hooks__hooks.updateOffset(mom, days || months);
    }
  }

  var add_subtract__add      = createAdder(1, 'add');
  var add_subtract__subtract = createAdder(-1, 'subtract');

  function moment_calendar__calendar (time, formats) {
    // We want to compare the start of today, vs this.
    // Getting start-of-today depends on whether we're local/utc/offset or not.
    var now = time || local__createLocal(),
      sod = cloneWithOffset(now, this).startOf('day'),
      diff = this.diff(sod, 'days', true),
      format = diff < -6 ? 'sameElse' :
        diff < -1 ? 'lastWeek' :
          diff < 0 ? 'lastDay' :
            diff < 1 ? 'sameDay' :
              diff < 2 ? 'nextDay' :
                diff < 7 ? 'nextWeek' : 'sameElse';
    return this.format(formats && formats[format] || this.localeData().calendar(format, this, local__createLocal(now)));
  }

  function clone () {
    return new Moment(this);
  }

  function isAfter (input, units) {
    var inputMs;
    units = normalizeUnits(typeof units !== 'undefined' ? units : 'millisecond');
    if (units === 'millisecond') {
      input = isMoment(input) ? input : local__createLocal(input);
      return +this > +input;
    } else {
      inputMs = isMoment(input) ? +input : +local__createLocal(input);
      return inputMs < +this.clone().startOf(units);
    }
  }

  function isBefore (input, units) {
    var inputMs;
    units = normalizeUnits(typeof units !== 'undefined' ? units : 'millisecond');
    if (units === 'millisecond') {
      input = isMoment(input) ? input : local__createLocal(input);
      return +this < +input;
    } else {
      inputMs = isMoment(input) ? +input : +local__createLocal(input);
      return +this.clone().endOf(units) < inputMs;
    }
  }

  function isBetween (from, to, units) {
    return this.isAfter(from, units) && this.isBefore(to, units);
  }

  function isSame (input, units) {
    var inputMs;
    units = normalizeUnits(units || 'millisecond');
    if (units === 'millisecond') {
      input = isMoment(input) ? input : local__createLocal(input);
      return +this === +input;
    } else {
      inputMs = +local__createLocal(input);
      return +(this.clone().startOf(units)) <= inputMs && inputMs <= +(this.clone().endOf(units));
    }
  }

  function diff (input, units, asFloat) {
    var that = cloneWithOffset(input, this),
      zoneDelta = (that.utcOffset() - this.utcOffset()) * 6e4,
      delta, output;

    units = normalizeUnits(units);

    if (units === 'year' || units === 'month' || units === 'quarter') {
      output = monthDiff(this, that);
      if (units === 'quarter') {
        output = output / 3;
      } else if (units === 'year') {
        output = output / 12;
      }
    } else {
      delta = this - that;
      output = units === 'second' ? delta / 1e3 : // 1000
        units === 'minute' ? delta / 6e4 : // 1000 * 60
          units === 'hour' ? delta / 36e5 : // 1000 * 60 * 60
            units === 'day' ? (delta - zoneDelta) / 864e5 : // 1000 * 60 * 60 * 24, negate dst
              units === 'week' ? (delta - zoneDelta) / 6048e5 : // 1000 * 60 * 60 * 24 * 7, negate dst
                delta;
    }
    return asFloat ? output : absFloor(output);
  }

  function monthDiff (a, b) {
    // difference in months
    var wholeMonthDiff = ((b.year() - a.year()) * 12) + (b.month() - a.month()),
      // b is in (anchor - 1 month, anchor + 1 month)
      anchor = a.clone().add(wholeMonthDiff, 'months'),
      anchor2, adjust;

    if (b - anchor < 0) {
      anchor2 = a.clone().add(wholeMonthDiff - 1, 'months');
      // linear across the month
      adjust = (b - anchor) / (anchor - anchor2);
    } else {
      anchor2 = a.clone().add(wholeMonthDiff + 1, 'months');
      // linear across the month
      adjust = (b - anchor) / (anchor2 - anchor);
    }

    return -(wholeMonthDiff + adjust);
  }

  utils_hooks__hooks.defaultFormat = 'YYYY-MM-DDTHH:mm:ssZ';

  function toString () {
    return this.clone().locale('en').format('ddd MMM DD YYYY HH:mm:ss [GMT]ZZ');
  }

  function moment_format__toISOString () {
    var m = this.clone().utc();
    if (0 < m.year() && m.year() <= 9999) {
      if ('function' === typeof Date.prototype.toISOString) {
        // native implementation is ~50x faster, use it when we can
        return this.toDate().toISOString();
      } else {
        return formatMoment(m, 'YYYY-MM-DD[T]HH:mm:ss.SSS[Z]');
      }
    } else {
      return formatMoment(m, 'YYYYYY-MM-DD[T]HH:mm:ss.SSS[Z]');
    }
  }

  function format (inputString) {
    var output = formatMoment(this, inputString || utils_hooks__hooks.defaultFormat);
    return this.localeData().postformat(output);
  }

  function from (time, withoutSuffix) {
    if (!this.isValid()) {
      return this.localeData().invalidDate();
    }
    return create__createDuration({to: this, from: time}).locale(this.locale()).humanize(!withoutSuffix);
  }

  function fromNow (withoutSuffix) {
    return this.from(local__createLocal(), withoutSuffix);
  }

  function to (time, withoutSuffix) {
    if (!this.isValid()) {
      return this.localeData().invalidDate();
    }
    return create__createDuration({from: this, to: time}).locale(this.locale()).humanize(!withoutSuffix);
  }

  function toNow (withoutSuffix) {
    return this.to(local__createLocal(), withoutSuffix);
  }

  function locale (key) {
    var newLocaleData;

    if (key === undefined) {
      return this._locale._abbr;
    } else {
      newLocaleData = locale_locales__getLocale(key);
      if (newLocaleData != null) {
        this._locale = newLocaleData;
      }
      return this;
    }
  }

  var lang = deprecate(
    'moment().lang() is deprecated. Instead, use moment().localeData() to get the language configuration. Use moment().locale() to change languages.',
    function (key) {
      if (key === undefined) {
        return this.localeData();
      } else {
        return this.locale(key);
      }
    }
  );

  function localeData () {
    return this._locale;
  }

  function startOf (units) {
    units = normalizeUnits(units);
    // the following switch intentionally omits break keywords
    // to utilize falling through the cases.
    switch (units) {
      case 'year':
        this.month(0);
      /* falls through */
      case 'quarter':
      case 'month':
        this.date(1);
      /* falls through */
      case 'week':
      case 'isoWeek':
      case 'day':
        this.hours(0);
      /* falls through */
      case 'hour':
        this.minutes(0);
      /* falls through */
      case 'minute':
        this.seconds(0);
      /* falls through */
      case 'second':
        this.milliseconds(0);
    }

    // weeks are a special case
    if (units === 'week') {
      this.weekday(0);
    }
    if (units === 'isoWeek') {
      this.isoWeekday(1);
    }

    // quarters are also special
    if (units === 'quarter') {
      this.month(Math.floor(this.month() / 3) * 3);
    }

    return this;
  }

  function endOf (units) {
    units = normalizeUnits(units);
    if (units === undefined || units === 'millisecond') {
      return this;
    }
    return this.startOf(units).add(1, (units === 'isoWeek' ? 'week' : units)).subtract(1, 'ms');
  }

  function to_type__valueOf () {
    return +this._d - ((this._offset || 0) * 60000);
  }

  function unix () {
    return Math.floor(+this / 1000);
  }

  function toDate () {
    return this._offset ? new Date(+this) : this._d;
  }

  function toArray () {
    var m = this;
    return [m.year(), m.month(), m.date(), m.hour(), m.minute(), m.second(), m.millisecond()];
  }

  function toObject () {
    var m = this;
    return {
      years: m.year(),
      months: m.month(),
      date: m.date(),
      hours: m.hours(),
      minutes: m.minutes(),
      seconds: m.seconds(),
      milliseconds: m.milliseconds()
    };
  }

  function moment_valid__isValid () {
    return valid__isValid(this);
  }

  function parsingFlags () {
    return extend({}, getParsingFlags(this));
  }

  function invalidAt () {
    return getParsingFlags(this).overflow;
  }

  addFormatToken(0, ['gg', 2], 0, function () {
    return this.weekYear() % 100;
  });

  addFormatToken(0, ['GG', 2], 0, function () {
    return this.isoWeekYear() % 100;
  });

  function addWeekYearFormatToken (token, getter) {
    addFormatToken(0, [token, token.length], 0, getter);
  }

  addWeekYearFormatToken('gggg',     'weekYear');
  addWeekYearFormatToken('ggggg',    'weekYear');
  addWeekYearFormatToken('GGGG',  'isoWeekYear');
  addWeekYearFormatToken('GGGGG', 'isoWeekYear');

  // ALIASES

  addUnitAlias('weekYear', 'gg');
  addUnitAlias('isoWeekYear', 'GG');

  // PARSING

  addRegexToken('G',      matchSigned);
  addRegexToken('g',      matchSigned);
  addRegexToken('GG',     match1to2, match2);
  addRegexToken('gg',     match1to2, match2);
  addRegexToken('GGGG',   match1to4, match4);
  addRegexToken('gggg',   match1to4, match4);
  addRegexToken('GGGGG',  match1to6, match6);
  addRegexToken('ggggg',  match1to6, match6);

  addWeekParseToken(['gggg', 'ggggg', 'GGGG', 'GGGGG'], function (input, week, config, token) {
    week[token.substr(0, 2)] = toInt(input);
  });

  addWeekParseToken(['gg', 'GG'], function (input, week, config, token) {
    week[token] = utils_hooks__hooks.parseTwoDigitYear(input);
  });

  // HELPERS

  function weeksInYear(year, dow, doy) {
    return weekOfYear(local__createLocal([year, 11, 31 + dow - doy]), dow, doy).week;
  }

  // MOMENTS

  function getSetWeekYear (input) {
    var year = weekOfYear(this, this.localeData()._week.dow, this.localeData()._week.doy).year;
    return input == null ? year : this.add((input - year), 'y');
  }

  function getSetISOWeekYear (input) {
    var year = weekOfYear(this, 1, 4).year;
    return input == null ? year : this.add((input - year), 'y');
  }

  function getISOWeeksInYear () {
    return weeksInYear(this.year(), 1, 4);
  }

  function getWeeksInYear () {
    var weekInfo = this.localeData()._week;
    return weeksInYear(this.year(), weekInfo.dow, weekInfo.doy);
  }

  addFormatToken('Q', 0, 0, 'quarter');

  // ALIASES

  addUnitAlias('quarter', 'Q');

  // PARSING

  addRegexToken('Q', match1);
  addParseToken('Q', function (input, array) {
    array[MONTH] = (toInt(input) - 1) * 3;
  });

  // MOMENTS

  function getSetQuarter (input) {
    return input == null ? Math.ceil((this.month() + 1) / 3) : this.month((input - 1) * 3 + this.month() % 3);
  }

  addFormatToken('D', ['DD', 2], 'Do', 'date');

  // ALIASES

  addUnitAlias('date', 'D');

  // PARSING

  addRegexToken('D',  match1to2);
  addRegexToken('DD', match1to2, match2);
  addRegexToken('Do', function (isStrict, locale) {
    return isStrict ? locale._ordinalParse : locale._ordinalParseLenient;
  });

  addParseToken(['D', 'DD'], DATE);
  addParseToken('Do', function (input, array) {
    array[DATE] = toInt(input.match(match1to2)[0], 10);
  });

  // MOMENTS

  var getSetDayOfMonth = makeGetSet('Date', true);

  addFormatToken('d', 0, 'do', 'day');

  addFormatToken('dd', 0, 0, function (format) {
    return this.localeData().weekdaysMin(this, format);
  });

  addFormatToken('ddd', 0, 0, function (format) {
    return this.localeData().weekdaysShort(this, format);
  });

  addFormatToken('dddd', 0, 0, function (format) {
    return this.localeData().weekdays(this, format);
  });

  addFormatToken('e', 0, 0, 'weekday');
  addFormatToken('E', 0, 0, 'isoWeekday');

  // ALIASES

  addUnitAlias('day', 'd');
  addUnitAlias('weekday', 'e');
  addUnitAlias('isoWeekday', 'E');

  // PARSING

  addRegexToken('d',    match1to2);
  addRegexToken('e',    match1to2);
  addRegexToken('E',    match1to2);
  addRegexToken('dd',   matchWord);
  addRegexToken('ddd',  matchWord);
  addRegexToken('dddd', matchWord);

  addWeekParseToken(['dd', 'ddd', 'dddd'], function (input, week, config) {
    var weekday = config._locale.weekdaysParse(input);
    // if we didn't get a weekday name, mark the date as invalid
    if (weekday != null) {
      week.d = weekday;
    } else {
      getParsingFlags(config).invalidWeekday = input;
    }
  });

  addWeekParseToken(['d', 'e', 'E'], function (input, week, config, token) {
    week[token] = toInt(input);
  });

  // HELPERS

  function parseWeekday(input, locale) {
    if (typeof input !== 'string') {
      return input;
    }

    if (!isNaN(input)) {
      return parseInt(input, 10);
    }

    input = locale.weekdaysParse(input);
    if (typeof input === 'number') {
      return input;
    }

    return null;
  }

  // LOCALES

  var defaultLocaleWeekdays = 'Sunday_Monday_Tuesday_Wednesday_Thursday_Friday_Saturday'.split('_');
  function localeWeekdays (m) {
    return this._weekdays[m.day()];
  }

  var defaultLocaleWeekdaysShort = 'Sun_Mon_Tue_Wed_Thu_Fri_Sat'.split('_');
  function localeWeekdaysShort (m) {
    return this._weekdaysShort[m.day()];
  }

  var defaultLocaleWeekdaysMin = 'Su_Mo_Tu_We_Th_Fr_Sa'.split('_');
  function localeWeekdaysMin (m) {
    return this._weekdaysMin[m.day()];
  }

  function localeWeekdaysParse (weekdayName) {
    var i, mom, regex;

    this._weekdaysParse = this._weekdaysParse || [];

    for (i = 0; i < 7; i++) {
      // make the regex if we don't have it already
      if (!this._weekdaysParse[i]) {
        mom = local__createLocal([2000, 1]).day(i);
        regex = '^' + this.weekdays(mom, '') + '|^' + this.weekdaysShort(mom, '') + '|^' + this.weekdaysMin(mom, '');
        this._weekdaysParse[i] = new RegExp(regex.replace('.', ''), 'i');
      }
      // test the regex
      if (this._weekdaysParse[i].test(weekdayName)) {
        return i;
      }
    }
  }

  // MOMENTS

  function getSetDayOfWeek (input) {
    var day = this._isUTC ? this._d.getUTCDay() : this._d.getDay();
    if (input != null) {
      input = parseWeekday(input, this.localeData());
      return this.add(input - day, 'd');
    } else {
      return day;
    }
  }

  function getSetLocaleDayOfWeek (input) {
    var weekday = (this.day() + 7 - this.localeData()._week.dow) % 7;
    return input == null ? weekday : this.add(input - weekday, 'd');
  }

  function getSetISODayOfWeek (input) {
    // behaves the same as moment#day except
    // as a getter, returns 7 instead of 0 (1-7 range instead of 0-6)
    // as a setter, sunday should belong to the previous week.
    return input == null ? this.day() || 7 : this.day(this.day() % 7 ? input : input - 7);
  }

  addFormatToken('H', ['HH', 2], 0, 'hour');
  addFormatToken('h', ['hh', 2], 0, function () {
    return this.hours() % 12 || 12;
  });

  function meridiem (token, lowercase) {
    addFormatToken(token, 0, 0, function () {
      return this.localeData().meridiem(this.hours(), this.minutes(), lowercase);
    });
  }

  meridiem('a', true);
  meridiem('A', false);

  // ALIASES

  addUnitAlias('hour', 'h');

  // PARSING

  function matchMeridiem (isStrict, locale) {
    return locale._meridiemParse;
  }

  addRegexToken('a',  matchMeridiem);
  addRegexToken('A',  matchMeridiem);
  addRegexToken('H',  match1to2);
  addRegexToken('h',  match1to2);
  addRegexToken('HH', match1to2, match2);
  addRegexToken('hh', match1to2, match2);

  addParseToken(['H', 'HH'], HOUR);
  addParseToken(['a', 'A'], function (input, array, config) {
    config._isPm = config._locale.isPM(input);
    config._meridiem = input;
  });
  addParseToken(['h', 'hh'], function (input, array, config) {
    array[HOUR] = toInt(input);
    getParsingFlags(config).bigHour = true;
  });

  // LOCALES

  function localeIsPM (input) {
    // IE8 Quirks Mode & IE7 Standards Mode do not allow accessing strings like arrays
    // Using charAt should be more compatible.
    return ((input + '').toLowerCase().charAt(0) === 'p');
  }

  var defaultLocaleMeridiemParse = /[ap]\.?m?\.?/i;
  function localeMeridiem (hours, minutes, isLower) {
    if (hours > 11) {
      return isLower ? 'pm' : 'PM';
    } else {
      return isLower ? 'am' : 'AM';
    }
  }


  // MOMENTS

  // Setting the hour should keep the time, because the user explicitly
  // specified which hour he wants. So trying to maintain the same hour (in
  // a new timezone) makes sense. Adding/subtracting hours does not follow
  // this rule.
  var getSetHour = makeGetSet('Hours', true);

  addFormatToken('m', ['mm', 2], 0, 'minute');

  // ALIASES

  addUnitAlias('minute', 'm');

  // PARSING

  addRegexToken('m',  match1to2);
  addRegexToken('mm', match1to2, match2);
  addParseToken(['m', 'mm'], MINUTE);

  // MOMENTS

  var getSetMinute = makeGetSet('Minutes', false);

  addFormatToken('s', ['ss', 2], 0, 'second');

  // ALIASES

  addUnitAlias('second', 's');

  // PARSING

  addRegexToken('s',  match1to2);
  addRegexToken('ss', match1to2, match2);
  addParseToken(['s', 'ss'], SECOND);

  // MOMENTS

  var getSetSecond = makeGetSet('Seconds', false);

  addFormatToken('S', 0, 0, function () {
    return ~~(this.millisecond() / 100);
  });

  addFormatToken(0, ['SS', 2], 0, function () {
    return ~~(this.millisecond() / 10);
  });

  addFormatToken(0, ['SSS', 3], 0, 'millisecond');
  addFormatToken(0, ['SSSS', 4], 0, function () {
    return this.millisecond() * 10;
  });
  addFormatToken(0, ['SSSSS', 5], 0, function () {
    return this.millisecond() * 100;
  });
  addFormatToken(0, ['SSSSSS', 6], 0, function () {
    return this.millisecond() * 1000;
  });
  addFormatToken(0, ['SSSSSSS', 7], 0, function () {
    return this.millisecond() * 10000;
  });
  addFormatToken(0, ['SSSSSSSS', 8], 0, function () {
    return this.millisecond() * 100000;
  });
  addFormatToken(0, ['SSSSSSSSS', 9], 0, function () {
    return this.millisecond() * 1000000;
  });


  // ALIASES

  addUnitAlias('millisecond', 'ms');

  // PARSING

  addRegexToken('S',    match1to3, match1);
  addRegexToken('SS',   match1to3, match2);
  addRegexToken('SSS',  match1to3, match3);

  var token;
  for (token = 'SSSS'; token.length <= 9; token += 'S') {
    addRegexToken(token, matchUnsigned);
  }

  function parseMs(input, array) {
    array[MILLISECOND] = toInt(('0.' + input) * 1000);
  }

  for (token = 'S'; token.length <= 9; token += 'S') {
    addParseToken(token, parseMs);
  }
  // MOMENTS

  var getSetMillisecond = makeGetSet('Milliseconds', false);

  addFormatToken('z',  0, 0, 'zoneAbbr');
  addFormatToken('zz', 0, 0, 'zoneName');

  // MOMENTS

  function getZoneAbbr () {
    return this._isUTC ? 'UTC' : '';
  }

  function getZoneName () {
    return this._isUTC ? 'Coordinated Universal Time' : '';
  }

  var momentPrototype__proto = Moment.prototype;

  momentPrototype__proto.add          = add_subtract__add;
  momentPrototype__proto.calendar     = moment_calendar__calendar;
  momentPrototype__proto.clone        = clone;
  momentPrototype__proto.diff         = diff;
  momentPrototype__proto.endOf        = endOf;
  momentPrototype__proto.format       = format;
  momentPrototype__proto.from         = from;
  momentPrototype__proto.fromNow      = fromNow;
  momentPrototype__proto.to           = to;
  momentPrototype__proto.toNow        = toNow;
  momentPrototype__proto.get          = getSet;
  momentPrototype__proto.invalidAt    = invalidAt;
  momentPrototype__proto.isAfter      = isAfter;
  momentPrototype__proto.isBefore     = isBefore;
  momentPrototype__proto.isBetween    = isBetween;
  momentPrototype__proto.isSame       = isSame;
  momentPrototype__proto.isValid      = moment_valid__isValid;
  momentPrototype__proto.lang         = lang;
  momentPrototype__proto.locale       = locale;
  momentPrototype__proto.localeData   = localeData;
  momentPrototype__proto.max          = prototypeMax;
  momentPrototype__proto.min          = prototypeMin;
  momentPrototype__proto.parsingFlags = parsingFlags;
  momentPrototype__proto.set          = getSet;
  momentPrototype__proto.startOf      = startOf;
  momentPrototype__proto.subtract     = add_subtract__subtract;
  momentPrototype__proto.toArray      = toArray;
  momentPrototype__proto.toObject     = toObject;
  momentPrototype__proto.toDate       = toDate;
  momentPrototype__proto.toISOString  = moment_format__toISOString;
  momentPrototype__proto.toJSON       = moment_format__toISOString;
  momentPrototype__proto.toString     = toString;
  momentPrototype__proto.unix         = unix;
  momentPrototype__proto.valueOf      = to_type__valueOf;

  // Year
  momentPrototype__proto.year       = getSetYear;
  momentPrototype__proto.isLeapYear = getIsLeapYear;

  // Week Year
  momentPrototype__proto.weekYear    = getSetWeekYear;
  momentPrototype__proto.isoWeekYear = getSetISOWeekYear;

  // Quarter
  momentPrototype__proto.quarter = momentPrototype__proto.quarters = getSetQuarter;

  // Month
  momentPrototype__proto.month       = getSetMonth;
  momentPrototype__proto.daysInMonth = getDaysInMonth;

  // Week
  momentPrototype__proto.week           = momentPrototype__proto.weeks        = getSetWeek;
  momentPrototype__proto.isoWeek        = momentPrototype__proto.isoWeeks     = getSetISOWeek;
  momentPrototype__proto.weeksInYear    = getWeeksInYear;
  momentPrototype__proto.isoWeeksInYear = getISOWeeksInYear;

  // Day
  momentPrototype__proto.date       = getSetDayOfMonth;
  momentPrototype__proto.day        = momentPrototype__proto.days             = getSetDayOfWeek;
  momentPrototype__proto.weekday    = getSetLocaleDayOfWeek;
  momentPrototype__proto.isoWeekday = getSetISODayOfWeek;
  momentPrototype__proto.dayOfYear  = getSetDayOfYear;

  // Hour
  momentPrototype__proto.hour = momentPrototype__proto.hours = getSetHour;

  // Minute
  momentPrototype__proto.minute = momentPrototype__proto.minutes = getSetMinute;

  // Second
  momentPrototype__proto.second = momentPrototype__proto.seconds = getSetSecond;

  // Millisecond
  momentPrototype__proto.millisecond = momentPrototype__proto.milliseconds = getSetMillisecond;

  // Offset
  momentPrototype__proto.utcOffset            = getSetOffset;
  momentPrototype__proto.utc                  = setOffsetToUTC;
  momentPrototype__proto.local                = setOffsetToLocal;
  momentPrototype__proto.parseZone            = setOffsetToParsedOffset;
  momentPrototype__proto.hasAlignedHourOffset = hasAlignedHourOffset;
  momentPrototype__proto.isDST                = isDaylightSavingTime;
  momentPrototype__proto.isDSTShifted         = isDaylightSavingTimeShifted;
  momentPrototype__proto.isLocal              = isLocal;
  momentPrototype__proto.isUtcOffset          = isUtcOffset;
  momentPrototype__proto.isUtc                = isUtc;
  momentPrototype__proto.isUTC                = isUtc;

  // Timezone
  momentPrototype__proto.zoneAbbr = getZoneAbbr;
  momentPrototype__proto.zoneName = getZoneName;

  // Deprecations
  momentPrototype__proto.dates  = deprecate('dates accessor is deprecated. Use date instead.', getSetDayOfMonth);
  momentPrototype__proto.months = deprecate('months accessor is deprecated. Use month instead', getSetMonth);
  momentPrototype__proto.years  = deprecate('years accessor is deprecated. Use year instead', getSetYear);
  momentPrototype__proto.zone   = deprecate('moment().zone is deprecated, use moment().utcOffset instead. https://github.com/moment/moment/issues/1779', getSetZone);

  var momentPrototype = momentPrototype__proto;

  function moment__createUnix (input) {
    return local__createLocal(input * 1000);
  }

  function moment__createInZone () {
    return local__createLocal.apply(null, arguments).parseZone();
  }

  var defaultCalendar = {
    sameDay : '[Today at] LT',
    nextDay : '[Tomorrow at] LT',
    nextWeek : 'dddd [at] LT',
    lastDay : '[Yesterday at] LT',
    lastWeek : '[Last] dddd [at] LT',
    sameElse : 'L'
  };

  function locale_calendar__calendar (key, mom, now) {
    var output = this._calendar[key];
    return typeof output === 'function' ? output.call(mom, now) : output;
  }

  var defaultLongDateFormat = {
    LTS  : 'h:mm:ss A',
    LT   : 'h:mm A',
    L    : 'MM/DD/YYYY',
    LL   : 'MMMM D, YYYY',
    LLL  : 'MMMM D, YYYY h:mm A',
    LLLL : 'dddd, MMMM D, YYYY h:mm A'
  };

  function longDateFormat (key) {
    var format = this._longDateFormat[key],
      formatUpper = this._longDateFormat[key.toUpperCase()];

    if (format || !formatUpper) {
      return format;
    }

    this._longDateFormat[key] = formatUpper.replace(/MMMM|MM|DD|dddd/g, function (val) {
      return val.slice(1);
    });

    return this._longDateFormat[key];
  }

  var defaultInvalidDate = 'Invalid date';

  function invalidDate () {
    return this._invalidDate;
  }

  var defaultOrdinal = '%d';
  var defaultOrdinalParse = /\d{1,2}/;

  function ordinal (number) {
    return this._ordinal.replace('%d', number);
  }

  function preParsePostFormat (string) {
    return string;
  }

  var defaultRelativeTime = {
    future : 'in %s',
    past   : '%s ago',
    s  : 'a few seconds',
    m  : 'a minute',
    mm : '%d minutes',
    h  : 'an hour',
    hh : '%d hours',
    d  : 'a day',
    dd : '%d days',
    M  : 'a month',
    MM : '%d months',
    y  : 'a year',
    yy : '%d years'
  };

  function relative__relativeTime (number, withoutSuffix, string, isFuture) {
    var output = this._relativeTime[string];
    return (typeof output === 'function') ?
      output(number, withoutSuffix, string, isFuture) :
      output.replace(/%d/i, number);
  }

  function pastFuture (diff, output) {
    var format = this._relativeTime[diff > 0 ? 'future' : 'past'];
    return typeof format === 'function' ? format(output) : format.replace(/%s/i, output);
  }

  function locale_set__set (config) {
    var prop, i;
    for (i in config) {
      prop = config[i];
      if (typeof prop === 'function') {
        this[i] = prop;
      } else {
        this['_' + i] = prop;
      }
    }
    // Lenient ordinal parsing accepts just a number in addition to
    // number + (possibly) stuff coming from _ordinalParseLenient.
    this._ordinalParseLenient = new RegExp(this._ordinalParse.source + '|' + (/\d{1,2}/).source);
  }

  var prototype__proto = Locale.prototype;

  prototype__proto._calendar       = defaultCalendar;
  prototype__proto.calendar        = locale_calendar__calendar;
  prototype__proto._longDateFormat = defaultLongDateFormat;
  prototype__proto.longDateFormat  = longDateFormat;
  prototype__proto._invalidDate    = defaultInvalidDate;
  prototype__proto.invalidDate     = invalidDate;
  prototype__proto._ordinal        = defaultOrdinal;
  prototype__proto.ordinal         = ordinal;
  prototype__proto._ordinalParse   = defaultOrdinalParse;
  prototype__proto.preparse        = preParsePostFormat;
  prototype__proto.postformat      = preParsePostFormat;
  prototype__proto._relativeTime   = defaultRelativeTime;
  prototype__proto.relativeTime    = relative__relativeTime;
  prototype__proto.pastFuture      = pastFuture;
  prototype__proto.set             = locale_set__set;

  // Month
  prototype__proto.months       =        localeMonths;
  prototype__proto._months      = defaultLocaleMonths;
  prototype__proto.monthsShort  =        localeMonthsShort;
  prototype__proto._monthsShort = defaultLocaleMonthsShort;
  prototype__proto.monthsParse  =        localeMonthsParse;

  // Week
  prototype__proto.week = localeWeek;
  prototype__proto._week = defaultLocaleWeek;
  prototype__proto.firstDayOfYear = localeFirstDayOfYear;
  prototype__proto.firstDayOfWeek = localeFirstDayOfWeek;

  // Day of Week
  prototype__proto.weekdays       =        localeWeekdays;
  prototype__proto._weekdays      = defaultLocaleWeekdays;
  prototype__proto.weekdaysMin    =        localeWeekdaysMin;
  prototype__proto._weekdaysMin   = defaultLocaleWeekdaysMin;
  prototype__proto.weekdaysShort  =        localeWeekdaysShort;
  prototype__proto._weekdaysShort = defaultLocaleWeekdaysShort;
  prototype__proto.weekdaysParse  =        localeWeekdaysParse;

  // Hours
  prototype__proto.isPM = localeIsPM;
  prototype__proto._meridiemParse = defaultLocaleMeridiemParse;
  prototype__proto.meridiem = localeMeridiem;

  function lists__get (format, index, field, setter) {
    var locale = locale_locales__getLocale();
    var utc = create_utc__createUTC().set(setter, index);
    return locale[field](utc, format);
  }

  function list (format, index, field, count, setter) {
    if (typeof format === 'number') {
      index = format;
      format = undefined;
    }

    format = format || '';

    if (index != null) {
      return lists__get(format, index, field, setter);
    }

    var i;
    var out = [];
    for (i = 0; i < count; i++) {
      out[i] = lists__get(format, i, field, setter);
    }
    return out;
  }

  function lists__listMonths (format, index) {
    return list(format, index, 'months', 12, 'month');
  }

  function lists__listMonthsShort (format, index) {
    return list(format, index, 'monthsShort', 12, 'month');
  }

  function lists__listWeekdays (format, index) {
    return list(format, index, 'weekdays', 7, 'day');
  }

  function lists__listWeekdaysShort (format, index) {
    return list(format, index, 'weekdaysShort', 7, 'day');
  }

  function lists__listWeekdaysMin (format, index) {
    return list(format, index, 'weekdaysMin', 7, 'day');
  }

  locale_locales__getSetGlobalLocale('en', {
    ordinalParse: /\d{1,2}(th|st|nd|rd)/,
    ordinal : function (number) {
      var b = number % 10,
        output = (toInt(number % 100 / 10) === 1) ? 'th' :
          (b === 1) ? 'st' :
            (b === 2) ? 'nd' :
              (b === 3) ? 'rd' : 'th';
      return number + output;
    }
  });

  // Side effect imports
  utils_hooks__hooks.lang = deprecate('moment.lang is deprecated. Use moment.locale instead.', locale_locales__getSetGlobalLocale);
  utils_hooks__hooks.langData = deprecate('moment.langData is deprecated. Use moment.localeData instead.', locale_locales__getLocale);

  var mathAbs = Math.abs;

  function duration_abs__abs () {
    var data           = this._data;

    this._milliseconds = mathAbs(this._milliseconds);
    this._days         = mathAbs(this._days);
    this._months       = mathAbs(this._months);

    data.milliseconds  = mathAbs(data.milliseconds);
    data.seconds       = mathAbs(data.seconds);
    data.minutes       = mathAbs(data.minutes);
    data.hours         = mathAbs(data.hours);
    data.months        = mathAbs(data.months);
    data.years         = mathAbs(data.years);

    return this;
  }

  function duration_add_subtract__addSubtract (duration, input, value, direction) {
    var other = create__createDuration(input, value);

    duration._milliseconds += direction * other._milliseconds;
    duration._days         += direction * other._days;
    duration._months       += direction * other._months;

    return duration._bubble();
  }

  // supports only 2.0-style add(1, 's') or add(duration)
  function duration_add_subtract__add (input, value) {
    return duration_add_subtract__addSubtract(this, input, value, 1);
  }

  // supports only 2.0-style subtract(1, 's') or subtract(duration)
  function duration_add_subtract__subtract (input, value) {
    return duration_add_subtract__addSubtract(this, input, value, -1);
  }

  function absCeil (number) {
    if (number < 0) {
      return Math.floor(number);
    } else {
      return Math.ceil(number);
    }
  }

  function bubble () {
    var milliseconds = this._milliseconds;
    var days         = this._days;
    var months       = this._months;
    var data         = this._data;
    var seconds, minutes, hours, years, monthsFromDays;

    // if we have a mix of positive and negative values, bubble down first
    // check: https://github.com/moment/moment/issues/2166
    if (!((milliseconds >= 0 && days >= 0 && months >= 0) ||
      (milliseconds <= 0 && days <= 0 && months <= 0))) {
      milliseconds += absCeil(monthsToDays(months) + days) * 864e5;
      days = 0;
      months = 0;
    }

    // The following code bubbles up values, see the tests for
    // examples of what that means.
    data.milliseconds = milliseconds % 1000;

    seconds           = absFloor(milliseconds / 1000);
    data.seconds      = seconds % 60;

    minutes           = absFloor(seconds / 60);
    data.minutes      = minutes % 60;

    hours             = absFloor(minutes / 60);
    data.hours        = hours % 24;

    days += absFloor(hours / 24);

    // convert days to months
    monthsFromDays = absFloor(daysToMonths(days));
    months += monthsFromDays;
    days -= absCeil(monthsToDays(monthsFromDays));

    // 12 months -> 1 year
    years = absFloor(months / 12);
    months %= 12;

    data.days   = days;
    data.months = months;
    data.years  = years;

    return this;
  }

  function daysToMonths (days) {
    // 400 years have 146097 days (taking into account leap year rules)
    // 400 years have 12 months === 4800
    return days * 4800 / 146097;
  }

  function monthsToDays (months) {
    // the reverse of daysToMonths
    return months * 146097 / 4800;
  }

  function as (units) {
    var days;
    var months;
    var milliseconds = this._milliseconds;

    units = normalizeUnits(units);

    if (units === 'month' || units === 'year') {
      days   = this._days   + milliseconds / 864e5;
      months = this._months + daysToMonths(days);
      return units === 'month' ? months : months / 12;
    } else {
      // handle milliseconds separately because of floating point math errors (issue #1867)
      days = this._days + Math.round(monthsToDays(this._months));
      switch (units) {
        case 'week'   : return days / 7     + milliseconds / 6048e5;
        case 'day'    : return days         + milliseconds / 864e5;
        case 'hour'   : return days * 24    + milliseconds / 36e5;
        case 'minute' : return days * 1440  + milliseconds / 6e4;
        case 'second' : return days * 86400 + milliseconds / 1000;
        // Math.floor prevents floating point math errors here
        case 'millisecond': return Math.floor(days * 864e5) + milliseconds;
        default: throw new Error('Unknown unit ' + units);
      }
    }
  }

  // TODO: Use this.as('ms')?
  function duration_as__valueOf () {
    return (
      this._milliseconds +
      this._days * 864e5 +
      (this._months % 12) * 2592e6 +
      toInt(this._months / 12) * 31536e6
    );
  }

  function makeAs (alias) {
    return function () {
      return this.as(alias);
    };
  }

  var asMilliseconds = makeAs('ms');
  var asSeconds      = makeAs('s');
  var asMinutes      = makeAs('m');
  var asHours        = makeAs('h');
  var asDays         = makeAs('d');
  var asWeeks        = makeAs('w');
  var asMonths       = makeAs('M');
  var asYears        = makeAs('y');

  function duration_get__get (units) {
    units = normalizeUnits(units);
    return this[units + 's']();
  }

  function makeGetter(name) {
    return function () {
      return this._data[name];
    };
  }

  var milliseconds = makeGetter('milliseconds');
  var seconds      = makeGetter('seconds');
  var minutes      = makeGetter('minutes');
  var hours        = makeGetter('hours');
  var days         = makeGetter('days');
  var months       = makeGetter('months');
  var years        = makeGetter('years');

  function weeks () {
    return absFloor(this.days() / 7);
  }

  var round = Math.round;
  var thresholds = {
    s: 45,  // seconds to minute
    m: 45,  // minutes to hour
    h: 22,  // hours to day
    d: 26,  // days to month
    M: 11   // months to year
  };

  // helper function for moment.fn.from, moment.fn.fromNow, and moment.duration.fn.humanize
  function substituteTimeAgo(string, number, withoutSuffix, isFuture, locale) {
    return locale.relativeTime(number || 1, !!withoutSuffix, string, isFuture);
  }

  function duration_humanize__relativeTime (posNegDuration, withoutSuffix, locale) {
    var duration = create__createDuration(posNegDuration).abs();
    var seconds  = round(duration.as('s'));
    var minutes  = round(duration.as('m'));
    var hours    = round(duration.as('h'));
    var days     = round(duration.as('d'));
    var months   = round(duration.as('M'));
    var years    = round(duration.as('y'));

    var a = seconds < thresholds.s && ['s', seconds]  ||
      minutes === 1          && ['m']           ||
      minutes < thresholds.m && ['mm', minutes] ||
      hours   === 1          && ['h']           ||
      hours   < thresholds.h && ['hh', hours]   ||
      days    === 1          && ['d']           ||
      days    < thresholds.d && ['dd', days]    ||
      months  === 1          && ['M']           ||
      months  < thresholds.M && ['MM', months]  ||
      years   === 1          && ['y']           || ['yy', years];

    a[2] = withoutSuffix;
    a[3] = +posNegDuration > 0;
    a[4] = locale;
    return substituteTimeAgo.apply(null, a);
  }

  // This function allows you to set a threshold for relative time strings
  function duration_humanize__getSetRelativeTimeThreshold (threshold, limit) {
    if (thresholds[threshold] === undefined) {
      return false;
    }
    if (limit === undefined) {
      return thresholds[threshold];
    }
    thresholds[threshold] = limit;
    return true;
  }

  function humanize (withSuffix) {
    var locale = this.localeData();
    var output = duration_humanize__relativeTime(this, !withSuffix, locale);

    if (withSuffix) {
      output = locale.pastFuture(+this, output);
    }

    return locale.postformat(output);
  }

  var iso_string__abs = Math.abs;

  function iso_string__toISOString() {
    // for ISO strings we do not use the normal bubbling rules:
    //  * milliseconds bubble up until they become hours
    //  * days do not bubble at all
    //  * months bubble up until they become years
    // This is because there is no context-free conversion between hours and days
    // (think of clock changes)
    // and also not between days and months (28-31 days per month)
    var seconds = iso_string__abs(this._milliseconds) / 1000;
    var days         = iso_string__abs(this._days);
    var months       = iso_string__abs(this._months);
    var minutes, hours, years;

    // 3600 seconds -> 60 minutes -> 1 hour
    minutes           = absFloor(seconds / 60);
    hours             = absFloor(minutes / 60);
    seconds %= 60;
    minutes %= 60;

    // 12 months -> 1 year
    years  = absFloor(months / 12);
    months %= 12;


    // inspired by https://github.com/dordille/moment-isoduration/blob/master/moment.isoduration.js
    var Y = years;
    var M = months;
    var D = days;
    var h = hours;
    var m = minutes;
    var s = seconds;
    var total = this.asSeconds();

    if (!total) {
      // this is the same as C#'s (Noda) and python (isodate)...
      // but not other JS (goog.date)
      return 'P0D';
    }

    return (total < 0 ? '-' : '') +
      'P' +
      (Y ? Y + 'Y' : '') +
      (M ? M + 'M' : '') +
      (D ? D + 'D' : '') +
      ((h || m || s) ? 'T' : '') +
      (h ? h + 'H' : '') +
      (m ? m + 'M' : '') +
      (s ? s + 'S' : '');
  }

  var duration_prototype__proto = Duration.prototype;

  duration_prototype__proto.abs            = duration_abs__abs;
  duration_prototype__proto.add            = duration_add_subtract__add;
  duration_prototype__proto.subtract       = duration_add_subtract__subtract;
  duration_prototype__proto.as             = as;
  duration_prototype__proto.asMilliseconds = asMilliseconds;
  duration_prototype__proto.asSeconds      = asSeconds;
  duration_prototype__proto.asMinutes      = asMinutes;
  duration_prototype__proto.asHours        = asHours;
  duration_prototype__proto.asDays         = asDays;
  duration_prototype__proto.asWeeks        = asWeeks;
  duration_prototype__proto.asMonths       = asMonths;
  duration_prototype__proto.asYears        = asYears;
  duration_prototype__proto.valueOf        = duration_as__valueOf;
  duration_prototype__proto._bubble        = bubble;
  duration_prototype__proto.get            = duration_get__get;
  duration_prototype__proto.milliseconds   = milliseconds;
  duration_prototype__proto.seconds        = seconds;
  duration_prototype__proto.minutes        = minutes;
  duration_prototype__proto.hours          = hours;
  duration_prototype__proto.days           = days;
  duration_prototype__proto.weeks          = weeks;
  duration_prototype__proto.months         = months;
  duration_prototype__proto.years          = years;
  duration_prototype__proto.humanize       = humanize;
  duration_prototype__proto.toISOString    = iso_string__toISOString;
  duration_prototype__proto.toString       = iso_string__toISOString;
  duration_prototype__proto.toJSON         = iso_string__toISOString;
  duration_prototype__proto.locale         = locale;
  duration_prototype__proto.localeData     = localeData;

  // Deprecations
  duration_prototype__proto.toIsoString = deprecate('toIsoString() is deprecated. Please use toISOString() instead (notice the capitals)', iso_string__toISOString);
  duration_prototype__proto.lang = lang;

  // Side effect imports

  addFormatToken('X', 0, 0, 'unix');
  addFormatToken('x', 0, 0, 'valueOf');

  // PARSING

  addRegexToken('x', matchSigned);
  addRegexToken('X', matchTimestamp);
  addParseToken('X', function (input, array, config) {
    config._d = new Date(parseFloat(input, 10) * 1000);
  });
  addParseToken('x', function (input, array, config) {
    config._d = new Date(toInt(input));
  });

  // Side effect imports


  utils_hooks__hooks.version = '2.10.6';

  setHookCallback(local__createLocal);

  utils_hooks__hooks.fn                    = momentPrototype;
  utils_hooks__hooks.min                   = min;
  utils_hooks__hooks.max                   = max;
  utils_hooks__hooks.utc                   = create_utc__createUTC;
  utils_hooks__hooks.unix                  = moment__createUnix;
  utils_hooks__hooks.months                = lists__listMonths;
  utils_hooks__hooks.isDate                = isDate;
  utils_hooks__hooks.locale                = locale_locales__getSetGlobalLocale;
  utils_hooks__hooks.invalid               = valid__createInvalid;
  utils_hooks__hooks.duration              = create__createDuration;
  utils_hooks__hooks.isMoment              = isMoment;
  utils_hooks__hooks.weekdays              = lists__listWeekdays;
  utils_hooks__hooks.parseZone             = moment__createInZone;
  utils_hooks__hooks.localeData            = locale_locales__getLocale;
  utils_hooks__hooks.isDuration            = isDuration;
  utils_hooks__hooks.monthsShort           = lists__listMonthsShort;
  utils_hooks__hooks.weekdaysMin           = lists__listWeekdaysMin;
  utils_hooks__hooks.defineLocale          = defineLocale;
  utils_hooks__hooks.weekdaysShort         = lists__listWeekdaysShort;
  utils_hooks__hooks.normalizeUnits        = normalizeUnits;
  utils_hooks__hooks.relativeTimeThreshold = duration_humanize__getSetRelativeTimeThreshold;

  var _moment = utils_hooks__hooks;

  return _moment;

}));