//! moment.js //! version : 2.10.2 //! 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 defaultParsingFlags() {
    // We need to deep clone this object.
    return {
        empty           : false,
        unusedTokens    : [],
        unusedInput     : [],
        overflow        : -2,
        charsLeftOver   : 0,
        nullInput       : false,
        invalidMonth    : null,
        invalidFormat   : false,
        userInvalidated : false,
        iso             : false
    };
}

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

function isDate(input) {
    return Object.prototype.toString.call(input) === '[object Date]' || input instanceof 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 valid__isValid(m) {
    if (m._isValid == null) {
        m._isValid = !isNaN(m._d.getTime()) &&
            m._pf.overflow < 0 &&
            !m._pf.empty &&
            !m._pf.invalidMonth &&
            !m._pf.nullInput &&
            !m._pf.invalidFormat &&
            !m._pf.userInvalidated;

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

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

    return m;
}

var momentProperties = utils_hooks__hooks.momentProperties = [];

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

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

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

    return to;
}

var updateInProgress = false;

// Moment prototype object
function Moment(config) {
    copyConfig(this, config);
    this._d = new Date(+config._d);
    // 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 && hasOwnProp(obj, '_isAMomentObject'));
}

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

    if (coercedNumber !== 0 && isFinite(coercedNumber)) {
        if (coercedNumber >= 0) {
            value = Math.floor(coercedNumber);
        } else {
            value = Math.ceil(coercedNumber);
        }
    }

    return value;
}

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

function Locale() {
}

var locales = {};
var globalLocale;

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

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

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

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

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

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

    return globalLocale._abbr;
}

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

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

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

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

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

    if (!key) {
        return globalLocale;
    }

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

    return chooseLocale(key);
}

var aliases = {};

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

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

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

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

    return normalizedInput;
}

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

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

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

// MOMENTS

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

function zeroFill(number, targetLength, forceSign) {
    var output = '' + Math.abs(number),
        sign = number >= 0;

    while (output.length < targetLength) {
        output = '0' + output;
    }
    return (sign ? (forceSign ? '+' : '') : '-') + output;
}

var formattingTokens = /(\[[^\[]*\])|(\\)?(Mo|MM?M?M?|Do|DDDo|DD?D?D?|ddd?d?|do?|w[o|w]?|W[o|W]?|Q|YYYYYY|YYYYY|YYYY|YY|gg(ggg?)?|GG(GGG?)?|e|E|a|A|hh?|HH?|mm?|ss?|S{1,4}|x|X|zz?|ZZ?|.)/g;

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

var formatFunctions = {};

var formatTokenFunctions = {};

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

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

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

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

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

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

    format = expandFormat(format, m.localeData());

    if (!formatFunctions[format]) {
        formatFunctions[format] = makeFormatFunction(format);
    }

    return formatFunctions[format](m);
}

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

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

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

    return format;
}

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

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

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

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

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

var regexes = {};

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

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

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

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

var tokens = {};

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

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

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

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

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

// FORMATTING

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

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

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

// ALIASES

addUnitAlias('month', 'M');

// PARSING

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

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

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

// LOCALES

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

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

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

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

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

// MOMENTS

function setMonth (mom, value) {
    var dayOfMonth;

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

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

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

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

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

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

        m._pf.overflow = overflow;
    }

    return m;
}

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

function deprecate(msg, fn) {
    var firstTime = true;
    return extend(function () {
        if (firstTime) {
            warn(msg);
            firstTime = false;
        }
        return fn.apply(this, arguments);
    }, fn);
}

var deprecations = {};

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

utils_hooks__hooks.suppressDeprecationWarnings = false;

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

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

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

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

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

    if (match) {
        config._pf.iso = true;
        for (i = 0, l = isoDates.length; i < l; i++) {
            if (isoDates[i][1].exec(string)) {
                // match[5] should be 'T' or undefined
                config._f = isoDates[i][0] + (match[6] || ' ');
                break;
            }
        }
        for (i = 0, l = isoTimes.length; i < l; i++) {
            if (isoTimes[i][1].exec(string)) {
                config._f += isoTimes[i][0];
                break;
            }
        }
        if (string.match(matchOffset)) {
            config._f += 'Z';
        }
        configFromStringAndFormat(config);
    } else {
        config._isValid = false;
    }
}

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

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

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

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

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

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

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

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

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

// ALIASES

addUnitAlias('year', 'y');

// PARSING

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

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

// HELPERS

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

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

// HOOKS

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

// MOMENTS

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

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

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

// ALIASES

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

// PARSING

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

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

// HELPERS

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

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

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

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

// LOCALES

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

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

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

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

// MOMENTS

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

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

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

// ALIASES

addUnitAlias('dayOfYear', 'DDD');

// PARSING

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

// HELPERS

//http://en.wikipedia.org/wiki/ISO_week_date#Calculating_a_date_given_the_year.2C_week_number_and_weekday
function dayOfYearFromWeeks(year, week, weekday, firstDayOfWeekOfYear, firstDayOfWeek) {
    var d = createUTCDate(year, 0, 1).getUTCDay();
    var daysToAdd;
    var dayOfYear;

    d = d === 0 ? 7 : d;
    weekday = weekday != null ? weekday : firstDayOfWeek;
    daysToAdd = firstDayOfWeek - d + (d > firstDayOfWeekOfYear ? 7 : 0) - (d < firstDayOfWeek ? 7 : 0);
    dayOfYear = 7 * (week - 1) + (weekday - firstDayOfWeek) + daysToAdd + 1;

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

// MOMENTS

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

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

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

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

    if (config._d) {
        return;
    }

    currentDate = currentDateArray(config);

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

utils_hooks__hooks.ISO_8601 = function () {};

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

    config._a = [];
    config._pf.empty = true;

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

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

    for (i = 0; i < tokens.length; i++) {
        token = tokens[i];
        parsedInput = (string.match(getParseRegexForToken(token, config)) || [])[0];
        if (parsedInput) {
            skipped = string.substr(0, string.indexOf(parsedInput));
            if (skipped.length > 0) {
                config._pf.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) {
                config._pf.empty = false;
            }
            else {
                config._pf.unusedTokens.push(token);
            }
            addTimeToArrayFromToken(token, parsedInput, config);
        }
        else if (config._strict && !parsedInput) {
            config._pf.unusedTokens.push(token);
        }
    }

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

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

    configFromArray(config);
    checkOverflow(config);
}

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

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

function configFromStringAndArray(config) {
    var tempConfig,
        bestMoment,

        scoreToBeat,
        i,
        currentScore;

    if (config._f.length === 0) {
        config._pf.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._pf = defaultParsingFlags();
        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 += tempConfig._pf.charsLeftOver;

        //or tokens
        currentScore += tempConfig._pf.unusedTokens.length * 10;

        tempConfig._pf.score = currentScore;

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

    extend(config, bestMoment || tempConfig);
}

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

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

    configFromArray(config);
}

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

    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 {
        configFromInput(config);
    }

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

    return res;
}

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

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

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

    return createFromConfig(c);
}

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

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

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

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

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

    return pickBy('isBefore', args);
}

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

    return pickBy('isAfter', args);
}

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

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

    this._data = {};

    this._locale = locale_locales__getLocale();

    this._bubble();
}

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

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

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

// PARSING

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

// HELPERS

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

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

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

// Return a moment from input, that is local/utc/zone equivalent to model.
function cloneWithOffset(input, model) {
    var res, diff;
    if (model._isUTC) {
        res = model.clone();
        diff = (isMoment(input) || isDate(input) ? +input : +local__createLocal(input)) - (+res);
        // Use low-level api, because this fn is low-level api.
        res._d.setTime(+res._d + diff);
        utils_hooks__hooks.updateOffset(res, false);
        return res;
    } else {
        return local__createLocal(input).local();
    }
    return model._isUTC ? local__createLocal(input).zone(model._offset || 0) : local__createLocal(input).local();
}

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

// HOOKS

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

// MOMENTS

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

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

        this.utcOffset(input, keepLocalTime);

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

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

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

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

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

function hasAlignedHourOffset (input) {
    if (!input) {
        input = 0;
    }
    else {
        input = local__createLocal(input).utcOffset();
    }

    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 (this._a) {
        var other = this._isUTC ? create_utc__createUTC(this._a) : local__createLocal(this._a);
        return this.isValid() && compareArrays(this._a, other.toArray()) > 0;
    }

    return false;
}

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

function isUtcOffset () {
    return this._isUTC;
}

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

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

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

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

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

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

    ret = new Duration(duration);

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

    return ret;
}

create__createDuration.fn = Duration.prototype;

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

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

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

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

    return res;
}

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

    return res;
}

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

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

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

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

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

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

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

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

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

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

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

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

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

    units = normalizeUnits(units);

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

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

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

    return -(wholeMonthDiff + adjust);
}

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

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

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

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

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

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

function locale (key) {
    var newLocaleData;

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

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

function localeData () {
    return this._locale;
}

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

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

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

    return this;
}

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

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

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

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

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

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

function parsingFlags () {
    return extend({}, this._pf);
}

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

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

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

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

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

// ALIASES

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

// PARSING

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

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

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

// HELPERS

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

// MOMENTS

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

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

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

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

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

// ALIASES

addUnitAlias('quarter', 'Q');

// PARSING

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

// MOMENTS

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

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

// ALIASES

addUnitAlias('date', 'D');

// PARSING

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

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

// MOMENTS

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

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

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

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

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

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

// ALIASES

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

// PARSING

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

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

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

// HELPERS

function parseWeekday(input, locale) {
    if (typeof input === 'string') {
        if (!isNaN(input)) {
            input = parseInt(input, 10);
        }
        else {
            input = locale.weekdaysParse(input);
            if (typeof input !== 'number') {
                return null;
            }
        }
    }
    return input;
}

// LOCALES

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

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

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

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

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

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

// MOMENTS

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

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

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

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

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

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

// ALIASES

addUnitAlias('hour', 'h');

// PARSING

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

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

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

// LOCALES

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

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

// MOMENTS

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

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

// ALIASES

addUnitAlias('minute', 'm');

// PARSING

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

// MOMENTS

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

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

// ALIASES

addUnitAlias('second', 's');

// PARSING

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

// MOMENTS

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

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

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

function millisecond__milliseconds (token) {
    addFormatToken(0, [token, 3], 0, 'millisecond');
}

millisecond__milliseconds('SSS');
millisecond__milliseconds('SSSS');

// ALIASES

addUnitAlias('millisecond', 'ms');

// PARSING

addRegexToken('S',    match1to3, match1);
addRegexToken('SS',   match1to3, match2);
addRegexToken('SSS',  match1to3, match3);
addRegexToken('SSSS', matchUnsigned);
addParseToken(['S', 'SS', 'SSS', 'SSSS'], function (input, array) {
    array[MILLISECOND] = toInt(('0.' + input) * 1000);
});

// MOMENTS

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

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

// MOMENTS

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

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

var momentPrototype__proto = Moment.prototype;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

var momentPrototype = momentPrototype__proto;

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

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

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

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

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

function longDateFormat (key) {
    var output = this._longDateFormat[key];
    if (!output && this._longDateFormat[key.toUpperCase()]) {
        output = this._longDateFormat[key.toUpperCase()].replace(/MMMM|MM|DD|dddd/g, function (val) {
            return val.slice(1);
        });
        this._longDateFormat[key] = output;
    }
    return output;
}

var defaultInvalidDate = 'Invalid date';

function invalidDate () {
    return this._invalidDate;
}

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

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

function preParsePostFormat (string) {
    return string;
}

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

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

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

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

var prototype__proto = Locale.prototype;

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

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

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

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

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

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

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

    format = format || '';

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

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

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

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

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

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

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

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

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

var mathAbs = Math.abs;

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

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

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

    return this;
}

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

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

    return duration._bubble();
}

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

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

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

    // Accurately convert days to years, assume start from year 0.
    years = absFloor(daysToYears(days));
    days -= absFloor(yearsToDays(years));

    // 30 days to a month
    // TODO (iskren): Use anchor date (like 1st Jan) to compute this.
    months += absFloor(days / 30);
    days   %= 30;

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

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

    return this;
}

function daysToYears (days) {
    // 400 years have 146097 days (taking into account leap year rules)
    return days * 400 / 146097;
}

function yearsToDays (years) {
    // years * 365 + absFloor(years / 4) -
    //     absFloor(years / 100) + absFloor(years / 400);
    return years * 146097 / 400;
}

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 + daysToYears(days) * 12;
        return units === 'month' ? months : months / 12;
    } else {
        // handle milliseconds separately because of floating point math errors (issue #1867)
        days = this._days + Math.round(yearsToDays(this._months / 12));
        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 * 24 * 60      + milliseconds / 6e4;
            case 'second' : return days * 24 * 60 * 60 + milliseconds / 1000;
            // Math.floor prevents floating point math errors here
            case 'millisecond': return Math.floor(days * 24 * 60 * 60 * 1000) + 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 duration_get__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() {
    // inspired by https://github.com/dordille/moment-isoduration/blob/master/moment.isoduration.js
    var Y = iso_string__abs(this.years());
    var M = iso_string__abs(this.months());
    var D = iso_string__abs(this.days());
    var h = iso_string__abs(this.hours());
    var m = iso_string__abs(this.minutes());
    var s = iso_string__abs(this.seconds() + this.milliseconds() / 1000);
    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   = duration_get__milliseconds;
duration_prototype__proto.seconds        = seconds;
duration_prototype__proto.minutes        = minutes;
duration_prototype__proto.hours          = hours;
duration_prototype__proto.days           = days;
duration_prototype__proto.weeks          = weeks;
duration_prototype__proto.months         = months;
duration_prototype__proto.years          = years;
duration_prototype__proto.humanize       = humanize;
duration_prototype__proto.toISOString    = iso_string__toISOString;
duration_prototype__proto.toString       = iso_string__toISOString;
duration_prototype__proto.toJSON         = iso_string__toISOString;
duration_prototype__proto.locale         = locale;
duration_prototype__proto.localeData     = localeData;

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

// Side effect imports

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

// PARSING

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

// Side effect imports

utils_hooks__hooks.version = '2.10.2';

setHookCallback(local__createLocal);

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

var _moment = utils_hooks__hooks;

return _moment;

}));