//! moment.js
//! version : 2.13.0
//! 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 input instanceof Array || 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,
      parsedDateParts: [],
      meridiem: null,
    };
  }

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

  var some;
  if (Array.prototype.some) {
    some = Array.prototype.some;
  } else {
    some = function (fun) {
      var t = Object(this);
      var len = t.length >>> 0;

      for (var i = 0; i < len; i++) {
        if (i in t && fun.call(this, t[i], i, t)) {
          return true;
        }
      }

      return false;
    };
  }

  function valid__isValid(m) {
    if (m._isValid == null) {
      var flags = getParsingFlags(m);
      var parsedParts = some.call(flags.parsedDateParts, function (i) {
        return i != null;
      });
      m._isValid = !isNaN(m._d.getTime()) && flags.overflow < 0 && !flags.empty && !flags.invalidMonth && !flags.invalidWeekday && !flags.nullInput && !flags.invalidFormat && !flags.userInvalidated && (!flags.meridiem || (flags.meridiem && parsedParts));

      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;
  }

  function isUndefined(input) {
    return input === void 0;
  }

  // Plugins that add properties should also add the key here (null value),
  // so we can properly clone ourselves.
  var momentProperties = (utils_hooks__hooks.momentProperties = []);

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

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

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

  // compare two arrays, return the number of differences
  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 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 (utils_hooks__hooks.deprecationHandler != null) {
        utils_hooks__hooks.deprecationHandler(null, msg);
      }
      if (firstTime) {
        warn(msg + "\nArguments: " + Array.prototype.slice.call(arguments).join(", ") + "\n" + new Error().stack);
        firstTime = false;
      }
      return fn.apply(this, arguments);
    }, fn);
  }

  var deprecations = {};

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

  utils_hooks__hooks.suppressDeprecationWarnings = false;
  utils_hooks__hooks.deprecationHandler = null;

  function isFunction(input) {
    return input instanceof Function || Object.prototype.toString.call(input) === "[object Function]";
  }

  function isObject(input) {
    return Object.prototype.toString.call(input) === "[object Object]";
  }

  function locale_set__set(config) {
    var prop, i;
    for (i in config) {
      prop = config[i];
      if (isFunction(prop)) {
        this[i] = prop;
      } else {
        this["_" + i] = prop;
      }
    }
    this._config = config;
    // 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);
  }

  function mergeConfigs(parentConfig, childConfig) {
    var res = extend({}, parentConfig),
      prop;
    for (prop in childConfig) {
      if (hasOwnProp(childConfig, prop)) {
        if (isObject(parentConfig[prop]) && isObject(childConfig[prop])) {
          res[prop] = {};
          extend(res[prop], parentConfig[prop]);
          extend(res[prop], childConfig[prop]);
        } else if (childConfig[prop] != null) {
          res[prop] = childConfig[prop];
        } else {
          delete res[prop];
        }
      }
    }
    return res;
  }

  function Locale(config) {
    if (config != null) {
      this.set(config);
    }
  }

  var keys;

  if (Object.keys) {
    keys = Object.keys;
  } else {
    keys = function (obj) {
      var i,
        res = [];
      for (i in obj) {
        if (hasOwnProp(obj, i)) {
          res.push(i);
        }
      }
      return res;
    };
  }

  // internal storage for locale config files
  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_once("./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 (isUndefined(values)) {
        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, config) {
    if (config !== null) {
      config.abbr = name;
      if (locales[name] != null) {
        deprecateSimple("defineLocaleOverride", "use moment.updateLocale(localeName, config) to change " + "an existing locale. moment.defineLocale(localeName, " + "config) should only be used for creating a new locale");
        config = mergeConfigs(locales[name]._config, config);
      } else if (config.parentLocale != null) {
        if (locales[config.parentLocale] != null) {
          config = mergeConfigs(locales[config.parentLocale]._config, config);
        } else {
          // treat as if there is no base config
          deprecateSimple("parentLocaleUndefined", "specified parentLocale is not defined yet");
        }
      }
      locales[name] = new Locale(config);

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

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

  function updateLocale(name, config) {
    if (config != null) {
      var locale;
      if (locales[name] != null) {
        config = mergeConfigs(locales[name]._config, config);
      }
      locale = new Locale(config);
      locale.parentLocale = locales[name];
      locales[name] = locale;

      // backwards compat for now: also set the locale
      locale_locales__getSetGlobalLocale(name);
    } else {
      // pass null for config to unupdate, useful for tests
      if (locales[name] != null) {
        if (locales[name].parentLocale != null) {
          locales[name] = locales[name].parentLocale;
        } else if (locales[name] != null) {
          delete locales[name];
        }
      }
    }
    return locales[name];
  }

  // 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);
  }

  function locale_locales__listLocales() {
    return keys(locales);
  }

  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.isValid() ? mom._d["get" + (mom._isUTC ? "UTC" : "") + unit]() : NaN;
  }

  function get_set__set(mom, unit, value) {
    if (mom.isValid()) {
      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 (isFunction(this[units])) {
        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 = /(\[[^\[]*\])|(\\)?([Hh]mm(ss)?|Mo|MM?M?M?|Do|DDDo|DD?D?D?|ddd?d?|do?|w[o|w]?|W[o|W]?|Qo?|YYYYYY|YYYYY|YYYY|YY|gg(ggg?)?|GG(GGG?)?|e|E|a|A|hh?|HH?|kk?|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 = "",
        i;
      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 match3to4 = /\d\d\d\d?/; //     999 - 9999
  var match5to6 = /\d\d\d\d\d\d?/; //   99999 - 999999
  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 matchShortOffset = /Z|[+-]\d\d(?::?\d\d)?/gi; // +00 -00 +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.
  // includes scottish gaelic two word and hyphenated months
  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 addRegexToken(token, regex, strictRegex) {
    regexes[token] = isFunction(regex)
      ? regex
      : function (isStrict, localeData) {
          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 regexEscape(
      s.replace("\\", "").replace(/\\(\[)|\\(\])|\[([^\]\[]*)\]|\\(.)/g, function (matched, p1, p2, p3, p4) {
        return p1 || p2 || p3 || p4;
      })
    );
  }

  function regexEscape(s) {
    return s.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;
  var WEEK = 7;
  var WEEKDAY = 8;

  var indexOf;

  if (Array.prototype.indexOf) {
    indexOf = Array.prototype.indexOf;
  } else {
    indexOf = function (o) {
      // I know
      var i;
      for (i = 0; i < this.length; ++i) {
        if (this[i] === o) {
          return i;
        }
      }
      return -1;
    };
  }

  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", function (isStrict, locale) {
    return locale.monthsShortRegex(isStrict);
  });
  addRegexToken("MMMM", function (isStrict, locale) {
    return locale.monthsRegex(isStrict);
  });

  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 MONTHS_IN_FORMAT = /D[oD]?(\[[^\[\]]*\]|\s+)+MMMM?/;
  var defaultLocaleMonths = "January_February_March_April_May_June_July_August_September_October_November_December".split("_");
  function localeMonths(m, format) {
    return isArray(this._months) ? this._months[m.month()] : this._months[MONTHS_IN_FORMAT.test(format) ? "format" : "standalone"][m.month()];
  }

  var defaultLocaleMonthsShort = "Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec".split("_");
  function localeMonthsShort(m, format) {
    return isArray(this._monthsShort) ? this._monthsShort[m.month()] : this._monthsShort[MONTHS_IN_FORMAT.test(format) ? "format" : "standalone"][m.month()];
  }

  function units_month__handleStrictParse(monthName, format, strict) {
    var i,
      ii,
      mom,
      llc = monthName.toLocaleLowerCase();
    if (!this._monthsParse) {
      // this is not used
      this._monthsParse = [];
      this._longMonthsParse = [];
      this._shortMonthsParse = [];
      for (i = 0; i < 12; ++i) {
        mom = create_utc__createUTC([2000, i]);
        this._shortMonthsParse[i] = this.monthsShort(mom, "").toLocaleLowerCase();
        this._longMonthsParse[i] = this.months(mom, "").toLocaleLowerCase();
      }
    }

    if (strict) {
      if (format === "MMM") {
        ii = indexOf.call(this._shortMonthsParse, llc);
        return ii !== -1 ? ii : null;
      } else {
        ii = indexOf.call(this._longMonthsParse, llc);
        return ii !== -1 ? ii : null;
      }
    } else {
      if (format === "MMM") {
        ii = indexOf.call(this._shortMonthsParse, llc);
        if (ii !== -1) {
          return ii;
        }
        ii = indexOf.call(this._longMonthsParse, llc);
        return ii !== -1 ? ii : null;
      } else {
        ii = indexOf.call(this._longMonthsParse, llc);
        if (ii !== -1) {
          return ii;
        }
        ii = indexOf.call(this._shortMonthsParse, llc);
        return ii !== -1 ? ii : null;
      }
    }
  }

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

    if (this._monthsParseExact) {
      return units_month__handleStrictParse.call(this, monthName, format, strict);
    }

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

    // TODO: add sorting
    // Sorting makes sure if one month (or abbr) is a prefix of another
    // see sorting in computeMonthsParse
    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;

    if (!mom.isValid()) {
      // No op
      return mom;
    }

    if (typeof value === "string") {
      if (/^\d+$/.test(value)) {
        value = toInt(value);
      } else {
        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());
  }

  var defaultMonthsShortRegex = matchWord;
  function monthsShortRegex(isStrict) {
    if (this._monthsParseExact) {
      if (!hasOwnProp(this, "_monthsRegex")) {
        computeMonthsParse.call(this);
      }
      if (isStrict) {
        return this._monthsShortStrictRegex;
      } else {
        return this._monthsShortRegex;
      }
    } else {
      return this._monthsShortStrictRegex && isStrict ? this._monthsShortStrictRegex : this._monthsShortRegex;
    }
  }

  var defaultMonthsRegex = matchWord;
  function monthsRegex(isStrict) {
    if (this._monthsParseExact) {
      if (!hasOwnProp(this, "_monthsRegex")) {
        computeMonthsParse.call(this);
      }
      if (isStrict) {
        return this._monthsStrictRegex;
      } else {
        return this._monthsRegex;
      }
    } else {
      return this._monthsStrictRegex && isStrict ? this._monthsStrictRegex : this._monthsRegex;
    }
  }

  function computeMonthsParse() {
    function cmpLenRev(a, b) {
      return b.length - a.length;
    }

    var shortPieces = [],
      longPieces = [],
      mixedPieces = [],
      i,
      mom;
    for (i = 0; i < 12; i++) {
      // make the regex if we don't have it already
      mom = create_utc__createUTC([2000, i]);
      shortPieces.push(this.monthsShort(mom, ""));
      longPieces.push(this.months(mom, ""));
      mixedPieces.push(this.months(mom, ""));
      mixedPieces.push(this.monthsShort(mom, ""));
    }
    // Sorting makes sure if one month (or abbr) is a prefix of another it
    // will match the longer piece.
    shortPieces.sort(cmpLenRev);
    longPieces.sort(cmpLenRev);
    mixedPieces.sort(cmpLenRev);
    for (i = 0; i < 12; i++) {
      shortPieces[i] = regexEscape(shortPieces[i]);
      longPieces[i] = regexEscape(longPieces[i]);
      mixedPieces[i] = regexEscape(mixedPieces[i]);
    }

    this._monthsRegex = new RegExp("^(" + mixedPieces.join("|") + ")", "i");
    this._monthsShortRegex = this._monthsRegex;
    this._monthsStrictRegex = new RegExp("^(" + longPieces.join("|") + ")", "i");
    this._monthsShortStrictRegex = new RegExp("^(" + shortPieces.join("|") + ")", "i");
  }

  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;
      }
      if (getParsingFlags(m)._overflowWeeks && overflow === -1) {
        overflow = WEEK;
      }
      if (getParsingFlags(m)._overflowWeekday && overflow === -1) {
        overflow = WEEKDAY;
      }

      getParsingFlags(m).overflow = overflow;
    }

    return m;
  }

  // iso 8601 regex
  // 0000-00-00 0000-W00 or 0000-W00-0 + T + 00 or 00:00 or 00:00:00 or 00:00:00.000 + +00:00 or +0000 or +00)
  var extendedIsoRegex = /^\s*((?:[+-]\d{6}|\d{4})-(?:\d\d-\d\d|W\d\d-\d|W\d\d|\d\d\d|\d\d))(?:(T| )(\d\d(?::\d\d(?::\d\d(?:[.,]\d+)?)?)?)([\+\-]\d\d(?::?\d\d)?|\s*Z)?)?/;
  var basicIsoRegex = /^\s*((?:[+-]\d{6}|\d{4})(?:\d\d\d\d|W\d\d\d|W\d\d|\d\d\d|\d\d))(?:(T| )(\d\d(?:\d\d(?:\d\d(?:[.,]\d+)?)?)?)([\+\-]\d\d(?::?\d\d)?|\s*Z)?)?/;

  var tzRegex = /Z|[+-]\d\d(?::?\d\d)?/;

  var isoDates = [
    ["YYYYYY-MM-DD", /[+-]\d{6}-\d\d-\d\d/],
    ["YYYY-MM-DD", /\d{4}-\d\d-\d\d/],
    ["GGGG-[W]WW-E", /\d{4}-W\d\d-\d/],
    ["GGGG-[W]WW", /\d{4}-W\d\d/, false],
    ["YYYY-DDD", /\d{4}-\d{3}/],
    ["YYYY-MM", /\d{4}-\d\d/, false],
    ["YYYYYYMMDD", /[+-]\d{10}/],
    ["YYYYMMDD", /\d{8}/],
    // YYYYMM is NOT allowed by the standard
    ["GGGG[W]WWE", /\d{4}W\d{3}/],
    ["GGGG[W]WW", /\d{4}W\d{2}/, false],
    ["YYYYDDD", /\d{7}/],
  ];

  // iso time formats and regexes
  var isoTimes = [
    ["HH:mm:ss.SSSS", /\d\d:\d\d:\d\d\.\d+/],
    ["HH:mm:ss,SSSS", /\d\d:\d\d:\d\d,\d+/],
    ["HH:mm:ss", /\d\d:\d\d:\d\d/],
    ["HH:mm", /\d\d:\d\d/],
    ["HHmmss.SSSS", /\d\d\d\d\d\d\.\d+/],
    ["HHmmss,SSSS", /\d\d\d\d\d\d,\d+/],
    ["HHmmss", /\d\d\d\d\d\d/],
    ["HHmm", /\d\d\d\d/],
    ["HH", /\d\d/],
  ];

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

  // date from iso format
  function configFromISO(config) {
    var i,
      l,
      string = config._i,
      match = extendedIsoRegex.exec(string) || basicIsoRegex.exec(string),
      allowTime,
      dateFormat,
      timeFormat,
      tzFormat;

    if (match) {
      getParsingFlags(config).iso = true;

      for (i = 0, l = isoDates.length; i < l; i++) {
        if (isoDates[i][1].exec(match[1])) {
          dateFormat = isoDates[i][0];
          allowTime = isoDates[i][2] !== false;
          break;
        }
      }
      if (dateFormat == null) {
        config._isValid = false;
        return;
      }
      if (match[3]) {
        for (i = 0, l = isoTimes.length; i < l; i++) {
          if (isoTimes[i][1].exec(match[3])) {
            // match[2] should be 'T' or space
            timeFormat = (match[2] || " ") + isoTimes[i][0];
            break;
          }
        }
        if (timeFormat == null) {
          config._isValid = false;
          return;
        }
      }
      if (!allowTime && timeFormat != null) {
        config._isValid = false;
        return;
      }
      if (match[4]) {
        if (tzRegex.exec(match[4])) {
          tzFormat = "Z";
        } else {
          config._isValid = false;
          return;
        }
      }
      config._f = dateFormat + (timeFormat || "") + (tzFormat || "");
      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 remaps years 0-99 to 1900-1999
    if (y < 100 && y >= 0 && isFinite(date.getFullYear())) {
      date.setFullYear(y);
    }
    return date;
  }

  function createUTCDate(y) {
    var date = new Date(Date.UTC.apply(null, arguments));

    //the Date.UTC function remaps years 0-99 to 1900-1999
    if (y < 100 && y >= 0 && isFinite(date.getUTCFullYear())) {
      date.setUTCFullYear(y);
    }
    return date;
  }

  // FORMATTING

  addFormatToken("Y", 0, 0, function () {
    var y = this.year();
    return y <= 9999 ? "" + y : "+" + y;
  });

  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);
  });
  addParseToken("Y", function (input, array) {
    array[YEAR] = parseInt(input, 10);
  });

  // 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", true);

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

  // start-of-first-week - start-of-year
  function firstWeekOffset(year, dow, doy) {
    var // first-week day -- which january is always in the first week (4 for iso, 1 for other)
      fwd = 7 + dow - doy,
      // first-week day local weekday -- which local weekday is fwd
      fwdlw = (7 + createUTCDate(year, 0, fwd).getUTCDay() - dow) % 7;

    return -fwdlw + fwd - 1;
  }

  //http://en.wikipedia.org/wiki/ISO_week_date#Calculating_a_date_given_the_year.2C_week_number_and_weekday
  function dayOfYearFromWeeks(year, week, weekday, dow, doy) {
    var localWeekday = (7 + weekday - dow) % 7,
      weekOffset = firstWeekOffset(year, dow, doy),
      dayOfYear = 1 + 7 * (week - 1) + localWeekday + weekOffset,
      resYear,
      resDayOfYear;

    if (dayOfYear <= 0) {
      resYear = year - 1;
      resDayOfYear = daysInYear(resYear) + dayOfYear;
    } else if (dayOfYear > daysInYear(year)) {
      resYear = year + 1;
      resDayOfYear = dayOfYear - daysInYear(year);
    } else {
      resYear = year;
      resDayOfYear = dayOfYear;
    }

    return {
      year: resYear,
      dayOfYear: resDayOfYear,
    };
  }

  function weekOfYear(mom, dow, doy) {
    var weekOffset = firstWeekOffset(mom.year(), dow, doy),
      week = Math.floor((mom.dayOfYear() - weekOffset - 1) / 7) + 1,
      resWeek,
      resYear;

    if (week < 1) {
      resYear = mom.year() - 1;
      resWeek = week + weeksInYear(resYear, dow, doy);
    } else if (week > weeksInYear(mom.year(), dow, doy)) {
      resWeek = week - weeksInYear(mom.year(), dow, doy);
      resYear = mom.year() + 1;
    } else {
      resYear = mom.year();
      resWeek = week;
    }

    return {
      week: resWeek,
      year: resYear,
    };
  }

  function weeksInYear(year, dow, doy) {
    var weekOffset = firstWeekOffset(year, dow, doy),
      weekOffsetNext = firstWeekOffset(year + 1, dow, doy);
    return (daysInYear(year) - weekOffset + weekOffsetNext) / 7;
  }

  // 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) {
    // hooks is actually the exported moment object
    var nowValue = new Date(utils_hooks__hooks.now());
    if (config._useUTC) {
      return [nowValue.getUTCFullYear(), nowValue.getUTCMonth(), nowValue.getUTCDate()];
    }
    return [nowValue.getFullYear(), nowValue.getMonth(), nowValue.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, weekdayOverflow;

    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);
      if (weekday < 1 || weekday > 7) {
        weekdayOverflow = true;
      }
    } 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 < 0 || weekday > 6) {
          weekdayOverflow = true;
        }
      } else if (w.e != null) {
        // local weekday -- counting starts from begining of week
        weekday = w.e + dow;
        if (w.e < 0 || w.e > 6) {
          weekdayOverflow = true;
        }
      } else {
        // default to begining of week
        weekday = dow;
      }
    }
    if (week < 1 || week > weeksInYear(weekYear, dow, doy)) {
      getParsingFlags(config)._overflowWeeks = true;
    } else if (weekdayOverflow != null) {
      getParsingFlags(config)._overflowWeekday = true;
    } else {
      temp = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy);
      config._a[YEAR] = temp.year;
      config._dayOfYear = temp.dayOfYear;
    }
  }

  // constant that refers to the ISO standard
  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];
      // console.log('token', token, 'parsedInput', parsedInput,
      //         'regex', getParseRegexForToken(token, config));
      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;
    }

    getParsingFlags(config).parsedDateParts = config._a.slice(0);
    getParsingFlags(config).meridiem = config._meridiem;
    // 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;
    }
  }

  // date from string and array of format strings
  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 = map([i.year, i.month, i.day || i.date, i.hour, i.minute, i.second, i.millisecond], function (obj) {
      return obj && parseInt(obj, 10);
    });

    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);
    }

    if (!valid__isValid(config)) {
      config._d = null;
    }

    return config;
  }

  function configFromInput(config) {
    var input = config._i;
    if (input === undefined) {
      config._d = new Date(utils_hooks__hooks.now());
    } else if (isDate(input)) {
      config._d = new Date(input.valueOf());
    } 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.max instead. https://github.com/moment/moment/issues/1548", function () {
    var other = local__createLocal.apply(null, arguments);
    if (this.isValid() && other.isValid()) {
      return other < this ? this : other;
    } else {
      return valid__createInvalid();
    }
  });

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

  // 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);
  }

  var now = function () {
    return Date.now ? Date.now() : +new Date();
  };

  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 * 1000 * 60 * 60; //using 1000 * 60 * 60 instead of 36e5 to avoid floating point rounding errors https://github.com/moment/moment/issues/2978
    // 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;
  }

  // FORMATTING

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

  // HELPERS

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

  function offsetFromString(matcher, string) {
    var matches = (string || "").match(matcher) || [];
    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.valueOf() : local__createLocal(input).valueOf()) - res.valueOf();
      // Use low-level api, because this fn is low-level api.
      res._d.setTime(res._d.valueOf() + 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 (!this.isValid()) {
      return input != null ? this : NaN;
    }
    if (input != null) {
      if (typeof input === "string") {
        input = offsetFromString(matchShortOffset, input);
      } else 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(matchOffset, this._i));
    }
    return this;
  }

  function hasAlignedHourOffset(input) {
    if (!this.isValid()) {
      return false;
    }
    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 (!isUndefined(this._isDSTShifted)) {
      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.isValid() ? !this._isUTC : false;
  }

  function isUtcOffset() {
    return this.isValid() ? this._isUTC : false;
  }

  function isUtc() {
    return this.isValid() ? this._isUTC && this._offset === 0 : false;
  }

  // ASP.NET json date format regex
  var aspNetRegex = /^(\-)?(?:(\d*)[. ])?(\d+)\:(\d+)(?:\:(\d+)\.?(\d{3})?\d*)?$/;

  // 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
  // and further modified to allow for strings containing both week and day
  var isoRegex = /^(-)?P(?:(-?[0-9,.]*)Y)?(?:(-?[0-9,.]*)M)?(?:(-?[0-9,.]*)W)?(?:(-?[0-9,.]*)D)?(?:T(?:(-?[0-9,.]*)H)?(?:(-?[0-9,.]*)M)?(?:(-?[0-9,.]*)S)?)?$/;

  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 = isoRegex.exec(input))) {
      sign = match[1] === "-" ? -1 : 1;
      duration = {
        y: parseIso(match[2], sign),
        M: parseIso(match[3], sign),
        w: parseIso(match[4], sign),
        d: parseIso(match[5], sign),
        h: parseIso(match[6], sign),
        m: parseIso(match[7], sign),
        s: 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;
    if (!(base.isValid() && other.isValid())) {
      return { milliseconds: 0, months: 0 };
    }

    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 absRound(number) {
    if (number < 0) {
      return Math.round(-1 * number) * -1;
    } else {
      return Math.round(number);
    }
  }

  // TODO: remove 'name' arg after deprecation is removed
  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 = absRound(duration._days),
      months = absRound(duration._months);

    if (!mom.isValid()) {
      // No op
      return;
    }

    updateOffset = updateOffset == null ? true : updateOffset;

    if (milliseconds) {
      mom._d.setTime(mom._d.valueOf() + 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";

    var output = formats && (isFunction(formats[format]) ? formats[format]() : formats[format]);

    return this.format(output || this.localeData().calendar(format, this, local__createLocal(now)));
  }

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

  function isAfter(input, units) {
    var localInput = isMoment(input) ? input : local__createLocal(input);
    if (!(this.isValid() && localInput.isValid())) {
      return false;
    }
    units = normalizeUnits(!isUndefined(units) ? units : "millisecond");
    if (units === "millisecond") {
      return this.valueOf() > localInput.valueOf();
    } else {
      return localInput.valueOf() < this.clone().startOf(units).valueOf();
    }
  }

  function isBefore(input, units) {
    var localInput = isMoment(input) ? input : local__createLocal(input);
    if (!(this.isValid() && localInput.isValid())) {
      return false;
    }
    units = normalizeUnits(!isUndefined(units) ? units : "millisecond");
    if (units === "millisecond") {
      return this.valueOf() < localInput.valueOf();
    } else {
      return this.clone().endOf(units).valueOf() < localInput.valueOf();
    }
  }

  function isBetween(from, to, units, inclusivity) {
    inclusivity = inclusivity || "()";
    return (inclusivity[0] === "(" ? this.isAfter(from, units) : !this.isBefore(from, units)) && (inclusivity[1] === ")" ? this.isBefore(to, units) : !this.isAfter(to, units));
  }

  function isSame(input, units) {
    var localInput = isMoment(input) ? input : local__createLocal(input),
      inputMs;
    if (!(this.isValid() && localInput.isValid())) {
      return false;
    }
    units = normalizeUnits(units || "millisecond");
    if (units === "millisecond") {
      return this.valueOf() === localInput.valueOf();
    } else {
      inputMs = localInput.valueOf();
      return this.clone().startOf(units).valueOf() <= inputMs && inputMs <= this.clone().endOf(units).valueOf();
    }
  }

  function isSameOrAfter(input, units) {
    return this.isSame(input, units) || this.isAfter(input, units);
  }

  function isSameOrBefore(input, units) {
    return this.isSame(input, units) || this.isBefore(input, units);
  }

  function diff(input, units, asFloat) {
    var that, zoneDelta, delta, output;

    if (!this.isValid()) {
      return NaN;
    }

    that = cloneWithOffset(input, this);

    if (!that.isValid()) {
      return NaN;
    }

    zoneDelta = (that.utcOffset() - this.utcOffset()) * 6e4;

    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);
    }

    //check for negative zero, return zero if negative zero
    return -(wholeMonthDiff + adjust) || 0;
  }

  utils_hooks__hooks.defaultFormat = "YYYY-MM-DDTHH:mm:ssZ";
  utils_hooks__hooks.defaultFormatUtc = "YYYY-MM-DDTHH:mm:ss[Z]";

  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 (isFunction(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) {
    if (!inputString) {
      inputString = this.isUtc() ? utils_hooks__hooks.defaultFormatUtc : utils_hooks__hooks.defaultFormat;
    }
    var output = formatMoment(this, inputString);
    return this.localeData().postformat(output);
  }

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

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

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

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

  // If passed a locale key, it will set the locale for this
  // instance.  Otherwise, it will return the locale configuration
  // variables for this instance.
  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":
      case "date":
        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;
    }

    // 'date' is an alias for 'day', so it should be considered as such.
    if (units === "date") {
      units = "day";
    }

    return this.startOf(units)
      .add(1, units === "isoWeek" ? "week" : units)
      .subtract(1, "ms");
  }

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

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

  function toDate() {
    return this._offset ? new Date(this.valueOf()) : 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 toJSON() {
    // new Date(NaN).toJSON() === null
    return this.isValid() ? this.toISOString() : null;
  }

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

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

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

  function creationData() {
    return {
      input: this._i,
      format: this._f,
      locale: this._locale,
      isUTC: this._isUTC,
      strict: this._strict,
    };
  }

  // FORMATTING

  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);
  });

  // MOMENTS

  function getSetWeekYear(input) {
    return getSetWeekYearHelper.call(this, input, this.week(), this.weekday(), this.localeData()._week.dow, this.localeData()._week.doy);
  }

  function getSetISOWeekYear(input) {
    return getSetWeekYearHelper.call(this, input, this.isoWeek(), this.isoWeekday(), 1, 4);
  }

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

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

  function getSetWeekYearHelper(input, week, weekday, dow, doy) {
    var weeksTarget;
    if (input == null) {
      return weekOfYear(this, dow, doy).year;
    } else {
      weeksTarget = weeksInYear(input, dow, doy);
      if (week > weeksTarget) {
        week = weeksTarget;
      }
      return setWeekAll.call(this, input, week, weekday, dow, doy);
    }
  }

  function setWeekAll(weekYear, week, weekday, dow, doy) {
    var dayOfYearData = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy),
      date = createUTCDate(dayOfYearData.year, 0, dayOfYearData.dayOfYear);

    this.year(date.getUTCFullYear());
    this.month(date.getUTCMonth());
    this.date(date.getUTCDate());
    return this;
  }

  // FORMATTING

  addFormatToken("Q", 0, "Qo", "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));
  }

  // FORMATTING

  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

  // 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");
  }

  // FORMATTING

  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);

  // FORMATTING

  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", function (isStrict, locale) {
    return locale.weekdaysMinRegex(isStrict);
  });
  addRegexToken("ddd", function (isStrict, locale) {
    return locale.weekdaysShortRegex(isStrict);
  });
  addRegexToken("dddd", function (isStrict, locale) {
    return locale.weekdaysRegex(isStrict);
  });

  addWeekParseToken(["dd", "ddd", "dddd"], function (input, week, config, token) {
    var weekday = config._locale.weekdaysParse(input, token, config._strict);
    // 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, format) {
    return isArray(this._weekdays) ? this._weekdays[m.day()] : this._weekdays[this._weekdays.isFormat.test(format) ? "format" : "standalone"][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 day_of_week__handleStrictParse(weekdayName, format, strict) {
    var i,
      ii,
      mom,
      llc = weekdayName.toLocaleLowerCase();
    if (!this._weekdaysParse) {
      this._weekdaysParse = [];
      this._shortWeekdaysParse = [];
      this._minWeekdaysParse = [];

      for (i = 0; i < 7; ++i) {
        mom = create_utc__createUTC([2000, 1]).day(i);
        this._minWeekdaysParse[i] = this.weekdaysMin(mom, "").toLocaleLowerCase();
        this._shortWeekdaysParse[i] = this.weekdaysShort(mom, "").toLocaleLowerCase();
        this._weekdaysParse[i] = this.weekdays(mom, "").toLocaleLowerCase();
      }
    }

    if (strict) {
      if (format === "dddd") {
        ii = indexOf.call(this._weekdaysParse, llc);
        return ii !== -1 ? ii : null;
      } else if (format === "ddd") {
        ii = indexOf.call(this._shortWeekdaysParse, llc);
        return ii !== -1 ? ii : null;
      } else {
        ii = indexOf.call(this._minWeekdaysParse, llc);
        return ii !== -1 ? ii : null;
      }
    } else {
      if (format === "dddd") {
        ii = indexOf.call(this._weekdaysParse, llc);
        if (ii !== -1) {
          return ii;
        }
        ii = indexOf.call(this._shortWeekdaysParse, llc);
        if (ii !== -1) {
          return ii;
        }
        ii = indexOf.call(this._minWeekdaysParse, llc);
        return ii !== -1 ? ii : null;
      } else if (format === "ddd") {
        ii = indexOf.call(this._shortWeekdaysParse, llc);
        if (ii !== -1) {
          return ii;
        }
        ii = indexOf.call(this._weekdaysParse, llc);
        if (ii !== -1) {
          return ii;
        }
        ii = indexOf.call(this._minWeekdaysParse, llc);
        return ii !== -1 ? ii : null;
      } else {
        ii = indexOf.call(this._minWeekdaysParse, llc);
        if (ii !== -1) {
          return ii;
        }
        ii = indexOf.call(this._weekdaysParse, llc);
        if (ii !== -1) {
          return ii;
        }
        ii = indexOf.call(this._shortWeekdaysParse, llc);
        return ii !== -1 ? ii : null;
      }
    }
  }

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

    if (this._weekdaysParseExact) {
      return day_of_week__handleStrictParse.call(this, weekdayName, format, strict);
    }

    if (!this._weekdaysParse) {
      this._weekdaysParse = [];
      this._minWeekdaysParse = [];
      this._shortWeekdaysParse = [];
      this._fullWeekdaysParse = [];
    }

    for (i = 0; i < 7; i++) {
      // make the regex if we don't have it already

      mom = create_utc__createUTC([2000, 1]).day(i);
      if (strict && !this._fullWeekdaysParse[i]) {
        this._fullWeekdaysParse[i] = new RegExp("^" + this.weekdays(mom, "").replace(".", ".?") + "$", "i");
        this._shortWeekdaysParse[i] = new RegExp("^" + this.weekdaysShort(mom, "").replace(".", ".?") + "$", "i");
        this._minWeekdaysParse[i] = new RegExp("^" + this.weekdaysMin(mom, "").replace(".", ".?") + "$", "i");
      }
      if (!this._weekdaysParse[i]) {
        regex = "^" + this.weekdays(mom, "") + "|^" + this.weekdaysShort(mom, "") + "|^" + this.weekdaysMin(mom, "");
        this._weekdaysParse[i] = new RegExp(regex.replace(".", ""), "i");
      }
      // test the regex
      if (strict && format === "dddd" && this._fullWeekdaysParse[i].test(weekdayName)) {
        return i;
      } else if (strict && format === "ddd" && this._shortWeekdaysParse[i].test(weekdayName)) {
        return i;
      } else if (strict && format === "dd" && this._minWeekdaysParse[i].test(weekdayName)) {
        return i;
      } else if (!strict && this._weekdaysParse[i].test(weekdayName)) {
        return i;
      }
    }
  }

  // MOMENTS

  function getSetDayOfWeek(input) {
    if (!this.isValid()) {
      return input != null ? this : NaN;
    }
    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) {
    if (!this.isValid()) {
      return input != null ? this : NaN;
    }
    var weekday = (this.day() + 7 - this.localeData()._week.dow) % 7;
    return input == null ? weekday : this.add(input - weekday, "d");
  }

  function getSetISODayOfWeek(input) {
    if (!this.isValid()) {
      return input != null ? this : NaN;
    }
    // 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);
  }

  var defaultWeekdaysRegex = matchWord;
  function weekdaysRegex(isStrict) {
    if (this._weekdaysParseExact) {
      if (!hasOwnProp(this, "_weekdaysRegex")) {
        computeWeekdaysParse.call(this);
      }
      if (isStrict) {
        return this._weekdaysStrictRegex;
      } else {
        return this._weekdaysRegex;
      }
    } else {
      return this._weekdaysStrictRegex && isStrict ? this._weekdaysStrictRegex : this._weekdaysRegex;
    }
  }

  var defaultWeekdaysShortRegex = matchWord;
  function weekdaysShortRegex(isStrict) {
    if (this._weekdaysParseExact) {
      if (!hasOwnProp(this, "_weekdaysRegex")) {
        computeWeekdaysParse.call(this);
      }
      if (isStrict) {
        return this._weekdaysShortStrictRegex;
      } else {
        return this._weekdaysShortRegex;
      }
    } else {
      return this._weekdaysShortStrictRegex && isStrict ? this._weekdaysShortStrictRegex : this._weekdaysShortRegex;
    }
  }

  var defaultWeekdaysMinRegex = matchWord;
  function weekdaysMinRegex(isStrict) {
    if (this._weekdaysParseExact) {
      if (!hasOwnProp(this, "_weekdaysRegex")) {
        computeWeekdaysParse.call(this);
      }
      if (isStrict) {
        return this._weekdaysMinStrictRegex;
      } else {
        return this._weekdaysMinRegex;
      }
    } else {
      return this._weekdaysMinStrictRegex && isStrict ? this._weekdaysMinStrictRegex : this._weekdaysMinRegex;
    }
  }

  function computeWeekdaysParse() {
    function cmpLenRev(a, b) {
      return b.length - a.length;
    }

    var minPieces = [],
      shortPieces = [],
      longPieces = [],
      mixedPieces = [],
      i,
      mom,
      minp,
      shortp,
      longp;
    for (i = 0; i < 7; i++) {
      // make the regex if we don't have it already
      mom = create_utc__createUTC([2000, 1]).day(i);
      minp = this.weekdaysMin(mom, "");
      shortp = this.weekdaysShort(mom, "");
      longp = this.weekdays(mom, "");
      minPieces.push(minp);
      shortPieces.push(shortp);
      longPieces.push(longp);
      mixedPieces.push(minp);
      mixedPieces.push(shortp);
      mixedPieces.push(longp);
    }
    // Sorting makes sure if one weekday (or abbr) is a prefix of another it
    // will match the longer piece.
    minPieces.sort(cmpLenRev);
    shortPieces.sort(cmpLenRev);
    longPieces.sort(cmpLenRev);
    mixedPieces.sort(cmpLenRev);
    for (i = 0; i < 7; i++) {
      shortPieces[i] = regexEscape(shortPieces[i]);
      longPieces[i] = regexEscape(longPieces[i]);
      mixedPieces[i] = regexEscape(mixedPieces[i]);
    }

    this._weekdaysRegex = new RegExp("^(" + mixedPieces.join("|") + ")", "i");
    this._weekdaysShortRegex = this._weekdaysRegex;
    this._weekdaysMinRegex = this._weekdaysRegex;

    this._weekdaysStrictRegex = new RegExp("^(" + longPieces.join("|") + ")", "i");
    this._weekdaysShortStrictRegex = new RegExp("^(" + shortPieces.join("|") + ")", "i");
    this._weekdaysMinStrictRegex = new RegExp("^(" + minPieces.join("|") + ")", "i");
  }

  // FORMATTING

  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

  // 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");
  }

  // FORMATTING

  function hFormat() {
    return this.hours() % 12 || 12;
  }

  function kFormat() {
    return this.hours() || 24;
  }

  addFormatToken("H", ["HH", 2], 0, "hour");
  addFormatToken("h", ["hh", 2], 0, hFormat);
  addFormatToken("k", ["kk", 2], 0, kFormat);

  addFormatToken("hmm", 0, 0, function () {
    return "" + hFormat.apply(this) + zeroFill(this.minutes(), 2);
  });

  addFormatToken("hmmss", 0, 0, function () {
    return "" + hFormat.apply(this) + zeroFill(this.minutes(), 2) + zeroFill(this.seconds(), 2);
  });

  addFormatToken("Hmm", 0, 0, function () {
    return "" + this.hours() + zeroFill(this.minutes(), 2);
  });

  addFormatToken("Hmmss", 0, 0, function () {
    return "" + this.hours() + zeroFill(this.minutes(), 2) + zeroFill(this.seconds(), 2);
  });

  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);

  addRegexToken("hmm", match3to4);
  addRegexToken("hmmss", match5to6);
  addRegexToken("Hmm", match3to4);
  addRegexToken("Hmmss", match5to6);

  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;
  });
  addParseToken("hmm", function (input, array, config) {
    var pos = input.length - 2;
    array[HOUR] = toInt(input.substr(0, pos));
    array[MINUTE] = toInt(input.substr(pos));
    getParsingFlags(config).bigHour = true;
  });
  addParseToken("hmmss", function (input, array, config) {
    var pos1 = input.length - 4;
    var pos2 = input.length - 2;
    array[HOUR] = toInt(input.substr(0, pos1));
    array[MINUTE] = toInt(input.substr(pos1, 2));
    array[SECOND] = toInt(input.substr(pos2));
    getParsingFlags(config).bigHour = true;
  });
  addParseToken("Hmm", function (input, array, config) {
    var pos = input.length - 2;
    array[HOUR] = toInt(input.substr(0, pos));
    array[MINUTE] = toInt(input.substr(pos));
  });
  addParseToken("Hmmss", function (input, array, config) {
    var pos1 = input.length - 4;
    var pos2 = input.length - 2;
    array[HOUR] = toInt(input.substr(0, pos1));
    array[MINUTE] = toInt(input.substr(pos1, 2));
    array[SECOND] = toInt(input.substr(pos2));
  });

  // 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);

  // FORMATTING

  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);

  // FORMATTING

  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);

  // FORMATTING

  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);

  // FORMATTING

  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.isSameOrAfter = isSameOrAfter;
  momentPrototype__proto.isSameOrBefore = isSameOrBefore;
  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 = toJSON;
  momentPrototype__proto.toString = toString;
  momentPrototype__proto.unix = unix;
  momentPrototype__proto.valueOf = to_type__valueOf;
  momentPrototype__proto.creationData = creationData;

  // 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 isFunction(output) ? 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 isFunction(output) ? output(number, withoutSuffix, string, isFuture) : output.replace(/%d/i, number);
  }

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

  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;
  prototype__proto._monthsRegex = defaultMonthsRegex;
  prototype__proto.monthsRegex = monthsRegex;
  prototype__proto._monthsShortRegex = defaultMonthsShortRegex;
  prototype__proto.monthsShortRegex = monthsShortRegex;

  // 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;

  prototype__proto._weekdaysRegex = defaultWeekdaysRegex;
  prototype__proto.weekdaysRegex = weekdaysRegex;
  prototype__proto._weekdaysShortRegex = defaultWeekdaysShortRegex;
  prototype__proto.weekdaysShortRegex = weekdaysShortRegex;
  prototype__proto._weekdaysMinRegex = defaultWeekdaysMinRegex;
  prototype__proto.weekdaysMinRegex = weekdaysMinRegex;

  // 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 listMonthsImpl(format, index, field) {
    if (typeof format === "number") {
      index = format;
      format = undefined;
    }

    format = format || "";

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

    var i;
    var out = [];
    for (i = 0; i < 12; i++) {
      out[i] = lists__get(format, i, field, "month");
    }
    return out;
  }

  // ()
  // (5)
  // (fmt, 5)
  // (fmt)
  // (true)
  // (true, 5)
  // (true, fmt, 5)
  // (true, fmt)
  function listWeekdaysImpl(localeSorted, format, index, field) {
    if (typeof localeSorted === "boolean") {
      if (typeof format === "number") {
        index = format;
        format = undefined;
      }

      format = format || "";
    } else {
      format = localeSorted;
      index = format;
      localeSorted = false;

      if (typeof format === "number") {
        index = format;
        format = undefined;
      }

      format = format || "";
    }

    var locale = locale_locales__getLocale(),
      shift = localeSorted ? locale._week.dow : 0;

    if (index != null) {
      return lists__get(format, (index + shift) % 7, field, "day");
    }

    var i;
    var out = [];
    for (i = 0; i < 7; i++) {
      out[i] = lists__get(format, (i + shift) % 7, field, "day");
    }
    return out;
  }

  function lists__listMonths(format, index) {
    return listMonthsImpl(format, index, "months");
  }

  function lists__listMonthsShort(format, index) {
    return listMonthsImpl(format, index, "monthsShort");
  }

  function lists__listWeekdays(localeSorted, format, index) {
    return listWeekdaysImpl(localeSorted, format, index, "weekdays");
  }

  function lists__listWeekdaysShort(localeSorted, format, index) {
    return listWeekdaysImpl(localeSorted, format, index, "weekdaysShort");
  }

  function lists__listWeekdaysMin(localeSorted, format, index) {
    return listWeekdaysImpl(localeSorted, format, index, "weekdaysMin");
  }

  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

  // FORMATTING

  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 = "2.13.0";

  setHookCallback(local__createLocal);

  utils_hooks__hooks.fn = momentPrototype;
  utils_hooks__hooks.min = min;
  utils_hooks__hooks.max = max;
  utils_hooks__hooks.now = now;
  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.updateLocale = updateLocale;
  utils_hooks__hooks.locales = locale_locales__listLocales;
  utils_hooks__hooks.weekdaysShort = lists__listWeekdaysShort;
  utils_hooks__hooks.normalizeUnits = normalizeUnits;
  utils_hooks__hooks.relativeTimeThreshold = duration_humanize__getSetRelativeTimeThreshold;
  utils_hooks__hooks.prototype = momentPrototype;

  var _moment = utils_hooks__hooks;

  return _moment;
});
