1//! moment.js
2//! version : 2.19.2
3//! authors : Tim Wood, Iskren Chernev, Moment.js contributors
4//! license : MIT
5//! momentjs.com
6
7;(function (global, factory) {
8    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
9    typeof define === 'function' && define.amd ? define(factory) :
10    global.moment = factory()
11}(this, (function () { 'use strict';
12
13var hookCallback;
14
15function hooks () {
16    return hookCallback.apply(null, arguments);
17}
18
19// This is done to register the method called with moment()
20// without creating circular dependencies.
21function setHookCallback (callback) {
22    hookCallback = callback;
23}
24
25function isArray(input) {
26    return input instanceof Array || Object.prototype.toString.call(input) === '[object Array]';
27}
28
29function isObject(input) {
30    // IE8 will treat undefined and null as object if it wasn't for
31    // input != null
32    return input != null && Object.prototype.toString.call(input) === '[object Object]';
33}
34
35function isObjectEmpty(obj) {
36    if (Object.getOwnPropertyNames) {
37        return (Object.getOwnPropertyNames(obj).length === 0);
38    } else {
39        var k;
40        for (k in obj) {
41            if (obj.hasOwnProperty(k)) {
42                return false;
43            }
44        }
45        return true;
46    }
47}
48
49function isUndefined(input) {
50    return input === void 0;
51}
52
53function isNumber(input) {
54    return typeof input === 'number' || Object.prototype.toString.call(input) === '[object Number]';
55}
56
57function isDate(input) {
58    return input instanceof Date || Object.prototype.toString.call(input) === '[object Date]';
59}
60
61function map(arr, fn) {
62    var res = [], i;
63    for (i = 0; i < arr.length; ++i) {
64        res.push(fn(arr[i], i));
65    }
66    return res;
67}
68
69function hasOwnProp(a, b) {
70    return Object.prototype.hasOwnProperty.call(a, b);
71}
72
73function extend(a, b) {
74    for (var i in b) {
75        if (hasOwnProp(b, i)) {
76            a[i] = b[i];
77        }
78    }
79
80    if (hasOwnProp(b, 'toString')) {
81        a.toString = b.toString;
82    }
83
84    if (hasOwnProp(b, 'valueOf')) {
85        a.valueOf = b.valueOf;
86    }
87
88    return a;
89}
90
91function createUTC (input, format, locale, strict) {
92    return createLocalOrUTC(input, format, locale, strict, true).utc();
93}
94
95function defaultParsingFlags() {
96    // We need to deep clone this object.
97    return {
98        empty           : false,
99        unusedTokens    : [],
100        unusedInput     : [],
101        overflow        : -2,
102        charsLeftOver   : 0,
103        nullInput       : false,
104        invalidMonth    : null,
105        invalidFormat   : false,
106        userInvalidated : false,
107        iso             : false,
108        parsedDateParts : [],
109        meridiem        : null,
110        rfc2822         : false,
111        weekdayMismatch : false
112    };
113}
114
115function getParsingFlags(m) {
116    if (m._pf == null) {
117        m._pf = defaultParsingFlags();
118    }
119    return m._pf;
120}
121
122var some;
123if (Array.prototype.some) {
124    some = Array.prototype.some;
125} else {
126    some = function (fun) {
127        var t = Object(this);
128        var len = t.length >>> 0;
129
130        for (var i = 0; i < len; i++) {
131            if (i in t && fun.call(this, t[i], i, t)) {
132                return true;
133            }
134        }
135
136        return false;
137    };
138}
139
140function isValid(m) {
141    if (m._isValid == null) {
142        var flags = getParsingFlags(m);
143        var parsedParts = some.call(flags.parsedDateParts, function (i) {
144            return i != null;
145        });
146        var isNowValid = !isNaN(m._d.getTime()) &&
147            flags.overflow < 0 &&
148            !flags.empty &&
149            !flags.invalidMonth &&
150            !flags.invalidWeekday &&
151            !flags.weekdayMismatch &&
152            !flags.nullInput &&
153            !flags.invalidFormat &&
154            !flags.userInvalidated &&
155            (!flags.meridiem || (flags.meridiem && parsedParts));
156
157        if (m._strict) {
158            isNowValid = isNowValid &&
159                flags.charsLeftOver === 0 &&
160                flags.unusedTokens.length === 0 &&
161                flags.bigHour === undefined;
162        }
163
164        if (Object.isFrozen == null || !Object.isFrozen(m)) {
165            m._isValid = isNowValid;
166        }
167        else {
168            return isNowValid;
169        }
170    }
171    return m._isValid;
172}
173
174function createInvalid (flags) {
175    var m = createUTC(NaN);
176    if (flags != null) {
177        extend(getParsingFlags(m), flags);
178    }
179    else {
180        getParsingFlags(m).userInvalidated = true;
181    }
182
183    return m;
184}
185
186// Plugins that add properties should also add the key here (null value),
187// so we can properly clone ourselves.
188var momentProperties = hooks.momentProperties = [];
189
190function copyConfig(to, from) {
191    var i, prop, val;
192
193    if (!isUndefined(from._isAMomentObject)) {
194        to._isAMomentObject = from._isAMomentObject;
195    }
196    if (!isUndefined(from._i)) {
197        to._i = from._i;
198    }
199    if (!isUndefined(from._f)) {
200        to._f = from._f;
201    }
202    if (!isUndefined(from._l)) {
203        to._l = from._l;
204    }
205    if (!isUndefined(from._strict)) {
206        to._strict = from._strict;
207    }
208    if (!isUndefined(from._tzm)) {
209        to._tzm = from._tzm;
210    }
211    if (!isUndefined(from._isUTC)) {
212        to._isUTC = from._isUTC;
213    }
214    if (!isUndefined(from._offset)) {
215        to._offset = from._offset;
216    }
217    if (!isUndefined(from._pf)) {
218        to._pf = getParsingFlags(from);
219    }
220    if (!isUndefined(from._locale)) {
221        to._locale = from._locale;
222    }
223
224    if (momentProperties.length > 0) {
225        for (i = 0; i < momentProperties.length; i++) {
226            prop = momentProperties[i];
227            val = from[prop];
228            if (!isUndefined(val)) {
229                to[prop] = val;
230            }
231        }
232    }
233
234    return to;
235}
236
237var updateInProgress = false;
238
239// Moment prototype object
240function Moment(config) {
241    copyConfig(this, config);
242    this._d = new Date(config._d != null ? config._d.getTime() : NaN);
243    if (!this.isValid()) {
244        this._d = new Date(NaN);
245    }
246    // Prevent infinite loop in case updateOffset creates new moment
247    // objects.
248    if (updateInProgress === false) {
249        updateInProgress = true;
250        hooks.updateOffset(this);
251        updateInProgress = false;
252    }
253}
254
255function isMoment (obj) {
256    return obj instanceof Moment || (obj != null && obj._isAMomentObject != null);
257}
258
259function absFloor (number) {
260    if (number < 0) {
261        // -0 -> 0
262        return Math.ceil(number) || 0;
263    } else {
264        return Math.floor(number);
265    }
266}
267
268function toInt(argumentForCoercion) {
269    var coercedNumber = +argumentForCoercion,
270        value = 0;
271
272    if (coercedNumber !== 0 && isFinite(coercedNumber)) {
273        value = absFloor(coercedNumber);
274    }
275
276    return value;
277}
278
279// compare two arrays, return the number of differences
280function compareArrays(array1, array2, dontConvert) {
281    var len = Math.min(array1.length, array2.length),
282        lengthDiff = Math.abs(array1.length - array2.length),
283        diffs = 0,
284        i;
285    for (i = 0; i < len; i++) {
286        if ((dontConvert && array1[i] !== array2[i]) ||
287            (!dontConvert && toInt(array1[i]) !== toInt(array2[i]))) {
288            diffs++;
289        }
290    }
291    return diffs + lengthDiff;
292}
293
294function warn(msg) {
295    if (hooks.suppressDeprecationWarnings === false &&
296            (typeof console !==  'undefined') && console.warn) {
297        console.warn('Deprecation warning: ' + msg);
298    }
299}
300
301function deprecate(msg, fn) {
302    var firstTime = true;
303
304    return extend(function () {
305        if (hooks.deprecationHandler != null) {
306            hooks.deprecationHandler(null, msg);
307        }
308        if (firstTime) {
309            var args = [];
310            var arg;
311            for (var i = 0; i < arguments.length; i++) {
312                arg = '';
313                if (typeof arguments[i] === 'object') {
314                    arg += '\n[' + i + '] ';
315                    for (var key in arguments[0]) {
316                        arg += key + ': ' + arguments[0][key] + ', ';
317                    }
318                    arg = arg.slice(0, -2); // Remove trailing comma and space
319                } else {
320                    arg = arguments[i];
321                }
322                args.push(arg);
323            }
324            warn(msg + '\nArguments: ' + Array.prototype.slice.call(args).join('') + '\n' + (new Error()).stack);
325            firstTime = false;
326        }
327        return fn.apply(this, arguments);
328    }, fn);
329}
330
331var deprecations = {};
332
333function deprecateSimple(name, msg) {
334    if (hooks.deprecationHandler != null) {
335        hooks.deprecationHandler(name, msg);
336    }
337    if (!deprecations[name]) {
338        warn(msg);
339        deprecations[name] = true;
340    }
341}
342
343hooks.suppressDeprecationWarnings = false;
344hooks.deprecationHandler = null;
345
346function isFunction(input) {
347    return input instanceof Function || Object.prototype.toString.call(input) === '[object Function]';
348}
349
350function set (config) {
351    var prop, i;
352    for (i in config) {
353        prop = config[i];
354        if (isFunction(prop)) {
355            this[i] = prop;
356        } else {
357            this['_' + i] = prop;
358        }
359    }
360    this._config = config;
361    // Lenient ordinal parsing accepts just a number in addition to
362    // number + (possibly) stuff coming from _dayOfMonthOrdinalParse.
363    // TODO: Remove "ordinalParse" fallback in next major release.
364    this._dayOfMonthOrdinalParseLenient = new RegExp(
365        (this._dayOfMonthOrdinalParse.source || this._ordinalParse.source) +
366            '|' + (/\d{1,2}/).source);
367}
368
369function mergeConfigs(parentConfig, childConfig) {
370    var res = extend({}, parentConfig), prop;
371    for (prop in childConfig) {
372        if (hasOwnProp(childConfig, prop)) {
373            if (isObject(parentConfig[prop]) && isObject(childConfig[prop])) {
374                res[prop] = {};
375                extend(res[prop], parentConfig[prop]);
376                extend(res[prop], childConfig[prop]);
377            } else if (childConfig[prop] != null) {
378                res[prop] = childConfig[prop];
379            } else {
380                delete res[prop];
381            }
382        }
383    }
384    for (prop in parentConfig) {
385        if (hasOwnProp(parentConfig, prop) &&
386                !hasOwnProp(childConfig, prop) &&
387                isObject(parentConfig[prop])) {
388            // make sure changes to properties don't modify parent config
389            res[prop] = extend({}, res[prop]);
390        }
391    }
392    return res;
393}
394
395function Locale(config) {
396    if (config != null) {
397        this.set(config);
398    }
399}
400
401var keys;
402
403if (Object.keys) {
404    keys = Object.keys;
405} else {
406    keys = function (obj) {
407        var i, res = [];
408        for (i in obj) {
409            if (hasOwnProp(obj, i)) {
410                res.push(i);
411            }
412        }
413        return res;
414    };
415}
416
417var defaultCalendar = {
418    sameDay : '[Today at] LT',
419    nextDay : '[Tomorrow at] LT',
420    nextWeek : 'dddd [at] LT',
421    lastDay : '[Yesterday at] LT',
422    lastWeek : '[Last] dddd [at] LT',
423    sameElse : 'L'
424};
425
426function calendar (key, mom, now) {
427    var output = this._calendar[key] || this._calendar['sameElse'];
428    return isFunction(output) ? output.call(mom, now) : output;
429}
430
431var defaultLongDateFormat = {
432    LTS  : 'h:mm:ss A',
433    LT   : 'h:mm A',
434    L    : 'MM/DD/YYYY',
435    LL   : 'MMMM D, YYYY',
436    LLL  : 'MMMM D, YYYY h:mm A',
437    LLLL : 'dddd, MMMM D, YYYY h:mm A'
438};
439
440function longDateFormat (key) {
441    var format = this._longDateFormat[key],
442        formatUpper = this._longDateFormat[key.toUpperCase()];
443
444    if (format || !formatUpper) {
445        return format;
446    }
447
448    this._longDateFormat[key] = formatUpper.replace(/MMMM|MM|DD|dddd/g, function (val) {
449        return val.slice(1);
450    });
451
452    return this._longDateFormat[key];
453}
454
455var defaultInvalidDate = 'Invalid date';
456
457function invalidDate () {
458    return this._invalidDate;
459}
460
461var defaultOrdinal = '%d';
462var defaultDayOfMonthOrdinalParse = /\d{1,2}/;
463
464function ordinal (number) {
465    return this._ordinal.replace('%d', number);
466}
467
468var defaultRelativeTime = {
469    future : 'in %s',
470    past   : '%s ago',
471    s  : 'a few seconds',
472    ss : '%d seconds',
473    m  : 'a minute',
474    mm : '%d minutes',
475    h  : 'an hour',
476    hh : '%d hours',
477    d  : 'a day',
478    dd : '%d days',
479    M  : 'a month',
480    MM : '%d months',
481    y  : 'a year',
482    yy : '%d years'
483};
484
485function relativeTime (number, withoutSuffix, string, isFuture) {
486    var output = this._relativeTime[string];
487    return (isFunction(output)) ?
488        output(number, withoutSuffix, string, isFuture) :
489        output.replace(/%d/i, number);
490}
491
492function pastFuture (diff, output) {
493    var format = this._relativeTime[diff > 0 ? 'future' : 'past'];
494    return isFunction(format) ? format(output) : format.replace(/%s/i, output);
495}
496
497var aliases = {};
498
499function addUnitAlias (unit, shorthand) {
500    var lowerCase = unit.toLowerCase();
501    aliases[lowerCase] = aliases[lowerCase + 's'] = aliases[shorthand] = unit;
502}
503
504function normalizeUnits(units) {
505    return typeof units === 'string' ? aliases[units] || aliases[units.toLowerCase()] : undefined;
506}
507
508function normalizeObjectUnits(inputObject) {
509    var normalizedInput = {},
510        normalizedProp,
511        prop;
512
513    for (prop in inputObject) {
514        if (hasOwnProp(inputObject, prop)) {
515            normalizedProp = normalizeUnits(prop);
516            if (normalizedProp) {
517                normalizedInput[normalizedProp] = inputObject[prop];
518            }
519        }
520    }
521
522    return normalizedInput;
523}
524
525var priorities = {};
526
527function addUnitPriority(unit, priority) {
528    priorities[unit] = priority;
529}
530
531function getPrioritizedUnits(unitsObj) {
532    var units = [];
533    for (var u in unitsObj) {
534        units.push({unit: u, priority: priorities[u]});
535    }
536    units.sort(function (a, b) {
537        return a.priority - b.priority;
538    });
539    return units;
540}
541
542function zeroFill(number, targetLength, forceSign) {
543    var absNumber = '' + Math.abs(number),
544        zerosToFill = targetLength - absNumber.length,
545        sign = number >= 0;
546    return (sign ? (forceSign ? '+' : '') : '-') +
547        Math.pow(10, Math.max(0, zerosToFill)).toString().substr(1) + absNumber;
548}
549
550var 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;
551
552var localFormattingTokens = /(\[[^\[]*\])|(\\)?(LTS|LT|LL?L?L?|l{1,4})/g;
553
554var formatFunctions = {};
555
556var formatTokenFunctions = {};
557
558// token:    'M'
559// padded:   ['MM', 2]
560// ordinal:  'Mo'
561// callback: function () { this.month() + 1 }
562function addFormatToken (token, padded, ordinal, callback) {
563    var func = callback;
564    if (typeof callback === 'string') {
565        func = function () {
566            return this[callback]();
567        };
568    }
569    if (token) {
570        formatTokenFunctions[token] = func;
571    }
572    if (padded) {
573        formatTokenFunctions[padded[0]] = function () {
574            return zeroFill(func.apply(this, arguments), padded[1], padded[2]);
575        };
576    }
577    if (ordinal) {
578        formatTokenFunctions[ordinal] = function () {
579            return this.localeData().ordinal(func.apply(this, arguments), token);
580        };
581    }
582}
583
584function removeFormattingTokens(input) {
585    if (input.match(/\[[\s\S]/)) {
586        return input.replace(/^\[|\]$/g, '');
587    }
588    return input.replace(/\\/g, '');
589}
590
591function makeFormatFunction(format) {
592    var array = format.match(formattingTokens), i, length;
593
594    for (i = 0, length = array.length; i < length; i++) {
595        if (formatTokenFunctions[array[i]]) {
596            array[i] = formatTokenFunctions[array[i]];
597        } else {
598            array[i] = removeFormattingTokens(array[i]);
599        }
600    }
601
602    return function (mom) {
603        var output = '', i;
604        for (i = 0; i < length; i++) {
605            output += isFunction(array[i]) ? array[i].call(mom, format) : array[i];
606        }
607        return output;
608    };
609}
610
611// format date using native date object
612function formatMoment(m, format) {
613    if (!m.isValid()) {
614        return m.localeData().invalidDate();
615    }
616
617    format = expandFormat(format, m.localeData());
618    formatFunctions[format] = formatFunctions[format] || makeFormatFunction(format);
619
620    return formatFunctions[format](m);
621}
622
623function expandFormat(format, locale) {
624    var i = 5;
625
626    function replaceLongDateFormatTokens(input) {
627        return locale.longDateFormat(input) || input;
628    }
629
630    localFormattingTokens.lastIndex = 0;
631    while (i >= 0 && localFormattingTokens.test(format)) {
632        format = format.replace(localFormattingTokens, replaceLongDateFormatTokens);
633        localFormattingTokens.lastIndex = 0;
634        i -= 1;
635    }
636
637    return format;
638}
639
640var match1         = /\d/;            //       0 - 9
641var match2         = /\d\d/;          //      00 - 99
642var match3         = /\d{3}/;         //     000 - 999
643var match4         = /\d{4}/;         //    0000 - 9999
644var match6         = /[+-]?\d{6}/;    // -999999 - 999999
645var match1to2      = /\d\d?/;         //       0 - 99
646var match3to4      = /\d\d\d\d?/;     //     999 - 9999
647var match5to6      = /\d\d\d\d\d\d?/; //   99999 - 999999
648var match1to3      = /\d{1,3}/;       //       0 - 999
649var match1to4      = /\d{1,4}/;       //       0 - 9999
650var match1to6      = /[+-]?\d{1,6}/;  // -999999 - 999999
651
652var matchUnsigned  = /\d+/;           //       0 - inf
653var matchSigned    = /[+-]?\d+/;      //    -inf - inf
654
655var matchOffset    = /Z|[+-]\d\d:?\d\d/gi; // +00:00 -00:00 +0000 -0000 or Z
656var matchShortOffset = /Z|[+-]\d\d(?::?\d\d)?/gi; // +00 -00 +00:00 -00:00 +0000 -0000 or Z
657
658var matchTimestamp = /[+-]?\d+(\.\d{1,3})?/; // 123456789 123456789.123
659
660// any word (or two) characters or numbers including two/three word month in arabic.
661// includes scottish gaelic two word and hyphenated months
662var matchWord = /[0-9]*['a-z\u00A0-\u05FF\u0700-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+|[\u0600-\u06FF\/]+(\s*?[\u0600-\u06FF]+){1,2}/i;
663
664
665var regexes = {};
666
667function addRegexToken (token, regex, strictRegex) {
668    regexes[token] = isFunction(regex) ? regex : function (isStrict, localeData) {
669        return (isStrict && strictRegex) ? strictRegex : regex;
670    };
671}
672
673function getParseRegexForToken (token, config) {
674    if (!hasOwnProp(regexes, token)) {
675        return new RegExp(unescapeFormat(token));
676    }
677
678    return regexes[token](config._strict, config._locale);
679}
680
681// Code from http://stackoverflow.com/questions/3561493/is-there-a-regexp-escape-function-in-javascript
682function unescapeFormat(s) {
683    return regexEscape(s.replace('\\', '').replace(/\\(\[)|\\(\])|\[([^\]\[]*)\]|\\(.)/g, function (matched, p1, p2, p3, p4) {
684        return p1 || p2 || p3 || p4;
685    }));
686}
687
688function regexEscape(s) {
689    return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
690}
691
692var tokens = {};
693
694function addParseToken (token, callback) {
695    var i, func = callback;
696    if (typeof token === 'string') {
697        token = [token];
698    }
699    if (isNumber(callback)) {
700        func = function (input, array) {
701            array[callback] = toInt(input);
702        };
703    }
704    for (i = 0; i < token.length; i++) {
705        tokens[token[i]] = func;
706    }
707}
708
709function addWeekParseToken (token, callback) {
710    addParseToken(token, function (input, array, config, token) {
711        config._w = config._w || {};
712        callback(input, config._w, config, token);
713    });
714}
715
716function addTimeToArrayFromToken(token, input, config) {
717    if (input != null && hasOwnProp(tokens, token)) {
718        tokens[token](input, config._a, config, token);
719    }
720}
721
722var YEAR = 0;
723var MONTH = 1;
724var DATE = 2;
725var HOUR = 3;
726var MINUTE = 4;
727var SECOND = 5;
728var MILLISECOND = 6;
729var WEEK = 7;
730var WEEKDAY = 8;
731
732// FORMATTING
733
734addFormatToken('Y', 0, 0, function () {
735    var y = this.year();
736    return y <= 9999 ? '' + y : '+' + y;
737});
738
739addFormatToken(0, ['YY', 2], 0, function () {
740    return this.year() % 100;
741});
742
743addFormatToken(0, ['YYYY',   4],       0, 'year');
744addFormatToken(0, ['YYYYY',  5],       0, 'year');
745addFormatToken(0, ['YYYYYY', 6, true], 0, 'year');
746
747// ALIASES
748
749addUnitAlias('year', 'y');
750
751// PRIORITIES
752
753addUnitPriority('year', 1);
754
755// PARSING
756
757addRegexToken('Y',      matchSigned);
758addRegexToken('YY',     match1to2, match2);
759addRegexToken('YYYY',   match1to4, match4);
760addRegexToken('YYYYY',  match1to6, match6);
761addRegexToken('YYYYYY', match1to6, match6);
762
763addParseToken(['YYYYY', 'YYYYYY'], YEAR);
764addParseToken('YYYY', function (input, array) {
765    array[YEAR] = input.length === 2 ? hooks.parseTwoDigitYear(input) : toInt(input);
766});
767addParseToken('YY', function (input, array) {
768    array[YEAR] = hooks.parseTwoDigitYear(input);
769});
770addParseToken('Y', function (input, array) {
771    array[YEAR] = parseInt(input, 10);
772});
773
774// HELPERS
775
776function daysInYear(year) {
777    return isLeapYear(year) ? 366 : 365;
778}
779
780function isLeapYear(year) {
781    return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
782}
783
784// HOOKS
785
786hooks.parseTwoDigitYear = function (input) {
787    return toInt(input) + (toInt(input) > 68 ? 1900 : 2000);
788};
789
790// MOMENTS
791
792var getSetYear = makeGetSet('FullYear', true);
793
794function getIsLeapYear () {
795    return isLeapYear(this.year());
796}
797
798function makeGetSet (unit, keepTime) {
799    return function (value) {
800        if (value != null) {
801            set$1(this, unit, value);
802            hooks.updateOffset(this, keepTime);
803            return this;
804        } else {
805            return get(this, unit);
806        }
807    };
808}
809
810function get (mom, unit) {
811    return mom.isValid() ?
812        mom._d['get' + (mom._isUTC ? 'UTC' : '') + unit]() : NaN;
813}
814
815function set$1 (mom, unit, value) {
816    if (mom.isValid() && !isNaN(value)) {
817        if (unit === 'FullYear' && isLeapYear(mom.year()) && mom.month() === 1 && mom.date() === 29) {
818            mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](value, mom.month(), daysInMonth(value, mom.month()));
819        }
820        else {
821            mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](value);
822        }
823    }
824}
825
826// MOMENTS
827
828function stringGet (units) {
829    units = normalizeUnits(units);
830    if (isFunction(this[units])) {
831        return this[units]();
832    }
833    return this;
834}
835
836
837function stringSet (units, value) {
838    if (typeof units === 'object') {
839        units = normalizeObjectUnits(units);
840        var prioritized = getPrioritizedUnits(units);
841        for (var i = 0; i < prioritized.length; i++) {
842            this[prioritized[i].unit](units[prioritized[i].unit]);
843        }
844    } else {
845        units = normalizeUnits(units);
846        if (isFunction(this[units])) {
847            return this[units](value);
848        }
849    }
850    return this;
851}
852
853function mod(n, x) {
854    return ((n % x) + x) % x;
855}
856
857var indexOf;
858
859if (Array.prototype.indexOf) {
860    indexOf = Array.prototype.indexOf;
861} else {
862    indexOf = function (o) {
863        // I know
864        var i;
865        for (i = 0; i < this.length; ++i) {
866            if (this[i] === o) {
867                return i;
868            }
869        }
870        return -1;
871    };
872}
873
874function daysInMonth(year, month) {
875    if (isNaN(year) || isNaN(month)) {
876        return NaN;
877    }
878    var modMonth = mod(month, 12);
879    year += (month - modMonth) / 12;
880    return modMonth === 1 ? (isLeapYear(year) ? 29 : 28) : (31 - modMonth % 7 % 2);
881}
882
883// FORMATTING
884
885addFormatToken('M', ['MM', 2], 'Mo', function () {
886    return this.month() + 1;
887});
888
889addFormatToken('MMM', 0, 0, function (format) {
890    return this.localeData().monthsShort(this, format);
891});
892
893addFormatToken('MMMM', 0, 0, function (format) {
894    return this.localeData().months(this, format);
895});
896
897// ALIASES
898
899addUnitAlias('month', 'M');
900
901// PRIORITY
902
903addUnitPriority('month', 8);
904
905// PARSING
906
907addRegexToken('M',    match1to2);
908addRegexToken('MM',   match1to2, match2);
909addRegexToken('MMM',  function (isStrict, locale) {
910    return locale.monthsShortRegex(isStrict);
911});
912addRegexToken('MMMM', function (isStrict, locale) {
913    return locale.monthsRegex(isStrict);
914});
915
916addParseToken(['M', 'MM'], function (input, array) {
917    array[MONTH] = toInt(input) - 1;
918});
919
920addParseToken(['MMM', 'MMMM'], function (input, array, config, token) {
921    var month = config._locale.monthsParse(input, token, config._strict);
922    // if we didn't find a month name, mark the date as invalid.
923    if (month != null) {
924        array[MONTH] = month;
925    } else {
926        getParsingFlags(config).invalidMonth = input;
927    }
928});
929
930// LOCALES
931
932var MONTHS_IN_FORMAT = /D[oD]?(\[[^\[\]]*\]|\s)+MMMM?/;
933var defaultLocaleMonths = 'January_February_March_April_May_June_July_August_September_October_November_December'.split('_');
934function localeMonths (m, format) {
935    if (!m) {
936        return isArray(this._months) ? this._months :
937            this._months['standalone'];
938    }
939    return isArray(this._months) ? this._months[m.month()] :
940        this._months[(this._months.isFormat || MONTHS_IN_FORMAT).test(format) ? 'format' : 'standalone'][m.month()];
941}
942
943var defaultLocaleMonthsShort = 'Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec'.split('_');
944function localeMonthsShort (m, format) {
945    if (!m) {
946        return isArray(this._monthsShort) ? this._monthsShort :
947            this._monthsShort['standalone'];
948    }
949    return isArray(this._monthsShort) ? this._monthsShort[m.month()] :
950        this._monthsShort[MONTHS_IN_FORMAT.test(format) ? 'format' : 'standalone'][m.month()];
951}
952
953function handleStrictParse(monthName, format, strict) {
954    var i, ii, mom, llc = monthName.toLocaleLowerCase();
955    if (!this._monthsParse) {
956        // this is not used
957        this._monthsParse = [];
958        this._longMonthsParse = [];
959        this._shortMonthsParse = [];
960        for (i = 0; i < 12; ++i) {
961            mom = createUTC([2000, i]);
962            this._shortMonthsParse[i] = this.monthsShort(mom, '').toLocaleLowerCase();
963            this._longMonthsParse[i] = this.months(mom, '').toLocaleLowerCase();
964        }
965    }
966
967    if (strict) {
968        if (format === 'MMM') {
969            ii = indexOf.call(this._shortMonthsParse, llc);
970            return ii !== -1 ? ii : null;
971        } else {
972            ii = indexOf.call(this._longMonthsParse, llc);
973            return ii !== -1 ? ii : null;
974        }
975    } else {
976        if (format === 'MMM') {
977            ii = indexOf.call(this._shortMonthsParse, llc);
978            if (ii !== -1) {
979                return ii;
980            }
981            ii = indexOf.call(this._longMonthsParse, llc);
982            return ii !== -1 ? ii : null;
983        } else {
984            ii = indexOf.call(this._longMonthsParse, llc);
985            if (ii !== -1) {
986                return ii;
987            }
988            ii = indexOf.call(this._shortMonthsParse, llc);
989            return ii !== -1 ? ii : null;
990        }
991    }
992}
993
994function localeMonthsParse (monthName, format, strict) {
995    var i, mom, regex;
996
997    if (this._monthsParseExact) {
998        return handleStrictParse.call(this, monthName, format, strict);
999    }
1000
1001    if (!this._monthsParse) {
1002        this._monthsParse = [];
1003        this._longMonthsParse = [];
1004        this._shortMonthsParse = [];
1005    }
1006
1007    // TODO: add sorting
1008    // Sorting makes sure if one month (or abbr) is a prefix of another
1009    // see sorting in computeMonthsParse
1010    for (i = 0; i < 12; i++) {
1011        // make the regex if we don't have it already
1012        mom = createUTC([2000, i]);
1013        if (strict && !this._longMonthsParse[i]) {
1014            this._longMonthsParse[i] = new RegExp('^' + this.months(mom, '').replace('.', '') + '$', 'i');
1015            this._shortMonthsParse[i] = new RegExp('^' + this.monthsShort(mom, '').replace('.', '') + '$', 'i');
1016        }
1017        if (!strict && !this._monthsParse[i]) {
1018            regex = '^' + this.months(mom, '') + '|^' + this.monthsShort(mom, '');
1019            this._monthsParse[i] = new RegExp(regex.replace('.', ''), 'i');
1020        }
1021        // test the regex
1022        if (strict && format === 'MMMM' && this._longMonthsParse[i].test(monthName)) {
1023            return i;
1024        } else if (strict && format === 'MMM' && this._shortMonthsParse[i].test(monthName)) {
1025            return i;
1026        } else if (!strict && this._monthsParse[i].test(monthName)) {
1027            return i;
1028        }
1029    }
1030}
1031
1032// MOMENTS
1033
1034function setMonth (mom, value) {
1035    var dayOfMonth;
1036
1037    if (!mom.isValid()) {
1038        // No op
1039        return mom;
1040    }
1041
1042    if (typeof value === 'string') {
1043        if (/^\d+$/.test(value)) {
1044            value = toInt(value);
1045        } else {
1046            value = mom.localeData().monthsParse(value);
1047            // TODO: Another silent failure?
1048            if (!isNumber(value)) {
1049                return mom;
1050            }
1051        }
1052    }
1053
1054    dayOfMonth = Math.min(mom.date(), daysInMonth(mom.year(), value));
1055    mom._d['set' + (mom._isUTC ? 'UTC' : '') + 'Month'](value, dayOfMonth);
1056    return mom;
1057}
1058
1059function getSetMonth (value) {
1060    if (value != null) {
1061        setMonth(this, value);
1062        hooks.updateOffset(this, true);
1063        return this;
1064    } else {
1065        return get(this, 'Month');
1066    }
1067}
1068
1069function getDaysInMonth () {
1070    return daysInMonth(this.year(), this.month());
1071}
1072
1073var defaultMonthsShortRegex = matchWord;
1074function monthsShortRegex (isStrict) {
1075    if (this._monthsParseExact) {
1076        if (!hasOwnProp(this, '_monthsRegex')) {
1077            computeMonthsParse.call(this);
1078        }
1079        if (isStrict) {
1080            return this._monthsShortStrictRegex;
1081        } else {
1082            return this._monthsShortRegex;
1083        }
1084    } else {
1085        if (!hasOwnProp(this, '_monthsShortRegex')) {
1086            this._monthsShortRegex = defaultMonthsShortRegex;
1087        }
1088        return this._monthsShortStrictRegex && isStrict ?
1089            this._monthsShortStrictRegex : this._monthsShortRegex;
1090    }
1091}
1092
1093var defaultMonthsRegex = matchWord;
1094function monthsRegex (isStrict) {
1095    if (this._monthsParseExact) {
1096        if (!hasOwnProp(this, '_monthsRegex')) {
1097            computeMonthsParse.call(this);
1098        }
1099        if (isStrict) {
1100            return this._monthsStrictRegex;
1101        } else {
1102            return this._monthsRegex;
1103        }
1104    } else {
1105        if (!hasOwnProp(this, '_monthsRegex')) {
1106            this._monthsRegex = defaultMonthsRegex;
1107        }
1108        return this._monthsStrictRegex && isStrict ?
1109            this._monthsStrictRegex : this._monthsRegex;
1110    }
1111}
1112
1113function computeMonthsParse () {
1114    function cmpLenRev(a, b) {
1115        return b.length - a.length;
1116    }
1117
1118    var shortPieces = [], longPieces = [], mixedPieces = [],
1119        i, mom;
1120    for (i = 0; i < 12; i++) {
1121        // make the regex if we don't have it already
1122        mom = createUTC([2000, i]);
1123        shortPieces.push(this.monthsShort(mom, ''));
1124        longPieces.push(this.months(mom, ''));
1125        mixedPieces.push(this.months(mom, ''));
1126        mixedPieces.push(this.monthsShort(mom, ''));
1127    }
1128    // Sorting makes sure if one month (or abbr) is a prefix of another it
1129    // will match the longer piece.
1130    shortPieces.sort(cmpLenRev);
1131    longPieces.sort(cmpLenRev);
1132    mixedPieces.sort(cmpLenRev);
1133    for (i = 0; i < 12; i++) {
1134        shortPieces[i] = regexEscape(shortPieces[i]);
1135        longPieces[i] = regexEscape(longPieces[i]);
1136    }
1137    for (i = 0; i < 24; i++) {
1138        mixedPieces[i] = regexEscape(mixedPieces[i]);
1139    }
1140
1141    this._monthsRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
1142    this._monthsShortRegex = this._monthsRegex;
1143    this._monthsStrictRegex = new RegExp('^(' + longPieces.join('|') + ')', 'i');
1144    this._monthsShortStrictRegex = new RegExp('^(' + shortPieces.join('|') + ')', 'i');
1145}
1146
1147function createDate (y, m, d, h, M, s, ms) {
1148    // can't just apply() to create a date:
1149    // https://stackoverflow.com/q/181348
1150    var date = new Date(y, m, d, h, M, s, ms);
1151
1152    // the date constructor remaps years 0-99 to 1900-1999
1153    if (y < 100 && y >= 0 && isFinite(date.getFullYear())) {
1154        date.setFullYear(y);
1155    }
1156    return date;
1157}
1158
1159function createUTCDate (y) {
1160    var date = new Date(Date.UTC.apply(null, arguments));
1161
1162    // the Date.UTC function remaps years 0-99 to 1900-1999
1163    if (y < 100 && y >= 0 && isFinite(date.getUTCFullYear())) {
1164        date.setUTCFullYear(y);
1165    }
1166    return date;
1167}
1168
1169// start-of-first-week - start-of-year
1170function firstWeekOffset(year, dow, doy) {
1171    var // first-week day -- which january is always in the first week (4 for iso, 1 for other)
1172        fwd = 7 + dow - doy,
1173        // first-week day local weekday -- which local weekday is fwd
1174        fwdlw = (7 + createUTCDate(year, 0, fwd).getUTCDay() - dow) % 7;
1175
1176    return -fwdlw + fwd - 1;
1177}
1178
1179// https://en.wikipedia.org/wiki/ISO_week_date#Calculating_a_date_given_the_year.2C_week_number_and_weekday
1180function dayOfYearFromWeeks(year, week, weekday, dow, doy) {
1181    var localWeekday = (7 + weekday - dow) % 7,
1182        weekOffset = firstWeekOffset(year, dow, doy),
1183        dayOfYear = 1 + 7 * (week - 1) + localWeekday + weekOffset,
1184        resYear, resDayOfYear;
1185
1186    if (dayOfYear <= 0) {
1187        resYear = year - 1;
1188        resDayOfYear = daysInYear(resYear) + dayOfYear;
1189    } else if (dayOfYear > daysInYear(year)) {
1190        resYear = year + 1;
1191        resDayOfYear = dayOfYear - daysInYear(year);
1192    } else {
1193        resYear = year;
1194        resDayOfYear = dayOfYear;
1195    }
1196
1197    return {
1198        year: resYear,
1199        dayOfYear: resDayOfYear
1200    };
1201}
1202
1203function weekOfYear(mom, dow, doy) {
1204    var weekOffset = firstWeekOffset(mom.year(), dow, doy),
1205        week = Math.floor((mom.dayOfYear() - weekOffset - 1) / 7) + 1,
1206        resWeek, resYear;
1207
1208    if (week < 1) {
1209        resYear = mom.year() - 1;
1210        resWeek = week + weeksInYear(resYear, dow, doy);
1211    } else if (week > weeksInYear(mom.year(), dow, doy)) {
1212        resWeek = week - weeksInYear(mom.year(), dow, doy);
1213        resYear = mom.year() + 1;
1214    } else {
1215        resYear = mom.year();
1216        resWeek = week;
1217    }
1218
1219    return {
1220        week: resWeek,
1221        year: resYear
1222    };
1223}
1224
1225function weeksInYear(year, dow, doy) {
1226    var weekOffset = firstWeekOffset(year, dow, doy),
1227        weekOffsetNext = firstWeekOffset(year + 1, dow, doy);
1228    return (daysInYear(year) - weekOffset + weekOffsetNext) / 7;
1229}
1230
1231// FORMATTING
1232
1233addFormatToken('w', ['ww', 2], 'wo', 'week');
1234addFormatToken('W', ['WW', 2], 'Wo', 'isoWeek');
1235
1236// ALIASES
1237
1238addUnitAlias('week', 'w');
1239addUnitAlias('isoWeek', 'W');
1240
1241// PRIORITIES
1242
1243addUnitPriority('week', 5);
1244addUnitPriority('isoWeek', 5);
1245
1246// PARSING
1247
1248addRegexToken('w',  match1to2);
1249addRegexToken('ww', match1to2, match2);
1250addRegexToken('W',  match1to2);
1251addRegexToken('WW', match1to2, match2);
1252
1253addWeekParseToken(['w', 'ww', 'W', 'WW'], function (input, week, config, token) {
1254    week[token.substr(0, 1)] = toInt(input);
1255});
1256
1257// HELPERS
1258
1259// LOCALES
1260
1261function localeWeek (mom) {
1262    return weekOfYear(mom, this._week.dow, this._week.doy).week;
1263}
1264
1265var defaultLocaleWeek = {
1266    dow : 0, // Sunday is the first day of the week.
1267    doy : 6  // The week that contains Jan 1st is the first week of the year.
1268};
1269
1270function localeFirstDayOfWeek () {
1271    return this._week.dow;
1272}
1273
1274function localeFirstDayOfYear () {
1275    return this._week.doy;
1276}
1277
1278// MOMENTS
1279
1280function getSetWeek (input) {
1281    var week = this.localeData().week(this);
1282    return input == null ? week : this.add((input - week) * 7, 'd');
1283}
1284
1285function getSetISOWeek (input) {
1286    var week = weekOfYear(this, 1, 4).week;
1287    return input == null ? week : this.add((input - week) * 7, 'd');
1288}
1289
1290// FORMATTING
1291
1292addFormatToken('d', 0, 'do', 'day');
1293
1294addFormatToken('dd', 0, 0, function (format) {
1295    return this.localeData().weekdaysMin(this, format);
1296});
1297
1298addFormatToken('ddd', 0, 0, function (format) {
1299    return this.localeData().weekdaysShort(this, format);
1300});
1301
1302addFormatToken('dddd', 0, 0, function (format) {
1303    return this.localeData().weekdays(this, format);
1304});
1305
1306addFormatToken('e', 0, 0, 'weekday');
1307addFormatToken('E', 0, 0, 'isoWeekday');
1308
1309// ALIASES
1310
1311addUnitAlias('day', 'd');
1312addUnitAlias('weekday', 'e');
1313addUnitAlias('isoWeekday', 'E');
1314
1315// PRIORITY
1316addUnitPriority('day', 11);
1317addUnitPriority('weekday', 11);
1318addUnitPriority('isoWeekday', 11);
1319
1320// PARSING
1321
1322addRegexToken('d',    match1to2);
1323addRegexToken('e',    match1to2);
1324addRegexToken('E',    match1to2);
1325addRegexToken('dd',   function (isStrict, locale) {
1326    return locale.weekdaysMinRegex(isStrict);
1327});
1328addRegexToken('ddd',   function (isStrict, locale) {
1329    return locale.weekdaysShortRegex(isStrict);
1330});
1331addRegexToken('dddd',   function (isStrict, locale) {
1332    return locale.weekdaysRegex(isStrict);
1333});
1334
1335addWeekParseToken(['dd', 'ddd', 'dddd'], function (input, week, config, token) {
1336    var weekday = config._locale.weekdaysParse(input, token, config._strict);
1337    // if we didn't get a weekday name, mark the date as invalid
1338    if (weekday != null) {
1339        week.d = weekday;
1340    } else {
1341        getParsingFlags(config).invalidWeekday = input;
1342    }
1343});
1344
1345addWeekParseToken(['d', 'e', 'E'], function (input, week, config, token) {
1346    week[token] = toInt(input);
1347});
1348
1349// HELPERS
1350
1351function parseWeekday(input, locale) {
1352    if (typeof input !== 'string') {
1353        return input;
1354    }
1355
1356    if (!isNaN(input)) {
1357        return parseInt(input, 10);
1358    }
1359
1360    input = locale.weekdaysParse(input);
1361    if (typeof input === 'number') {
1362        return input;
1363    }
1364
1365    return null;
1366}
1367
1368function parseIsoWeekday(input, locale) {
1369    if (typeof input === 'string') {
1370        return locale.weekdaysParse(input) % 7 || 7;
1371    }
1372    return isNaN(input) ? null : input;
1373}
1374
1375// LOCALES
1376
1377var defaultLocaleWeekdays = 'Sunday_Monday_Tuesday_Wednesday_Thursday_Friday_Saturday'.split('_');
1378function localeWeekdays (m, format) {
1379    if (!m) {
1380        return isArray(this._weekdays) ? this._weekdays :
1381            this._weekdays['standalone'];
1382    }
1383    return isArray(this._weekdays) ? this._weekdays[m.day()] :
1384        this._weekdays[this._weekdays.isFormat.test(format) ? 'format' : 'standalone'][m.day()];
1385}
1386
1387var defaultLocaleWeekdaysShort = 'Sun_Mon_Tue_Wed_Thu_Fri_Sat'.split('_');
1388function localeWeekdaysShort (m) {
1389    return (m) ? this._weekdaysShort[m.day()] : this._weekdaysShort;
1390}
1391
1392var defaultLocaleWeekdaysMin = 'Su_Mo_Tu_We_Th_Fr_Sa'.split('_');
1393function localeWeekdaysMin (m) {
1394    return (m) ? this._weekdaysMin[m.day()] : this._weekdaysMin;
1395}
1396
1397function handleStrictParse$1(weekdayName, format, strict) {
1398    var i, ii, mom, llc = weekdayName.toLocaleLowerCase();
1399    if (!this._weekdaysParse) {
1400        this._weekdaysParse = [];
1401        this._shortWeekdaysParse = [];
1402        this._minWeekdaysParse = [];
1403
1404        for (i = 0; i < 7; ++i) {
1405            mom = createUTC([2000, 1]).day(i);
1406            this._minWeekdaysParse[i] = this.weekdaysMin(mom, '').toLocaleLowerCase();
1407            this._shortWeekdaysParse[i] = this.weekdaysShort(mom, '').toLocaleLowerCase();
1408            this._weekdaysParse[i] = this.weekdays(mom, '').toLocaleLowerCase();
1409        }
1410    }
1411
1412    if (strict) {
1413        if (format === 'dddd') {
1414            ii = indexOf.call(this._weekdaysParse, llc);
1415            return ii !== -1 ? ii : null;
1416        } else if (format === 'ddd') {
1417            ii = indexOf.call(this._shortWeekdaysParse, llc);
1418            return ii !== -1 ? ii : null;
1419        } else {
1420            ii = indexOf.call(this._minWeekdaysParse, llc);
1421            return ii !== -1 ? ii : null;
1422        }
1423    } else {
1424        if (format === 'dddd') {
1425            ii = indexOf.call(this._weekdaysParse, llc);
1426            if (ii !== -1) {
1427                return ii;
1428            }
1429            ii = indexOf.call(this._shortWeekdaysParse, llc);
1430            if (ii !== -1) {
1431                return ii;
1432            }
1433            ii = indexOf.call(this._minWeekdaysParse, llc);
1434            return ii !== -1 ? ii : null;
1435        } else if (format === 'ddd') {
1436            ii = indexOf.call(this._shortWeekdaysParse, llc);
1437            if (ii !== -1) {
1438                return ii;
1439            }
1440            ii = indexOf.call(this._weekdaysParse, llc);
1441            if (ii !== -1) {
1442                return ii;
1443            }
1444            ii = indexOf.call(this._minWeekdaysParse, llc);
1445            return ii !== -1 ? ii : null;
1446        } else {
1447            ii = indexOf.call(this._minWeekdaysParse, llc);
1448            if (ii !== -1) {
1449                return ii;
1450            }
1451            ii = indexOf.call(this._weekdaysParse, llc);
1452            if (ii !== -1) {
1453                return ii;
1454            }
1455            ii = indexOf.call(this._shortWeekdaysParse, llc);
1456            return ii !== -1 ? ii : null;
1457        }
1458    }
1459}
1460
1461function localeWeekdaysParse (weekdayName, format, strict) {
1462    var i, mom, regex;
1463
1464    if (this._weekdaysParseExact) {
1465        return handleStrictParse$1.call(this, weekdayName, format, strict);
1466    }
1467
1468    if (!this._weekdaysParse) {
1469        this._weekdaysParse = [];
1470        this._minWeekdaysParse = [];
1471        this._shortWeekdaysParse = [];
1472        this._fullWeekdaysParse = [];
1473    }
1474
1475    for (i = 0; i < 7; i++) {
1476        // make the regex if we don't have it already
1477
1478        mom = createUTC([2000, 1]).day(i);
1479        if (strict && !this._fullWeekdaysParse[i]) {
1480            this._fullWeekdaysParse[i] = new RegExp('^' + this.weekdays(mom, '').replace('.', '\.?') + '$', 'i');
1481            this._shortWeekdaysParse[i] = new RegExp('^' + this.weekdaysShort(mom, '').replace('.', '\.?') + '$', 'i');
1482            this._minWeekdaysParse[i] = new RegExp('^' + this.weekdaysMin(mom, '').replace('.', '\.?') + '$', 'i');
1483        }
1484        if (!this._weekdaysParse[i]) {
1485            regex = '^' + this.weekdays(mom, '') + '|^' + this.weekdaysShort(mom, '') + '|^' + this.weekdaysMin(mom, '');
1486            this._weekdaysParse[i] = new RegExp(regex.replace('.', ''), 'i');
1487        }
1488        // test the regex
1489        if (strict && format === 'dddd' && this._fullWeekdaysParse[i].test(weekdayName)) {
1490            return i;
1491        } else if (strict && format === 'ddd' && this._shortWeekdaysParse[i].test(weekdayName)) {
1492            return i;
1493        } else if (strict && format === 'dd' && this._minWeekdaysParse[i].test(weekdayName)) {
1494            return i;
1495        } else if (!strict && this._weekdaysParse[i].test(weekdayName)) {
1496            return i;
1497        }
1498    }
1499}
1500
1501// MOMENTS
1502
1503function getSetDayOfWeek (input) {
1504    if (!this.isValid()) {
1505        return input != null ? this : NaN;
1506    }
1507    var day = this._isUTC ? this._d.getUTCDay() : this._d.getDay();
1508    if (input != null) {
1509        input = parseWeekday(input, this.localeData());
1510        return this.add(input - day, 'd');
1511    } else {
1512        return day;
1513    }
1514}
1515
1516function getSetLocaleDayOfWeek (input) {
1517    if (!this.isValid()) {
1518        return input != null ? this : NaN;
1519    }
1520    var weekday = (this.day() + 7 - this.localeData()._week.dow) % 7;
1521    return input == null ? weekday : this.add(input - weekday, 'd');
1522}
1523
1524function getSetISODayOfWeek (input) {
1525    if (!this.isValid()) {
1526        return input != null ? this : NaN;
1527    }
1528
1529    // behaves the same as moment#day except
1530    // as a getter, returns 7 instead of 0 (1-7 range instead of 0-6)
1531    // as a setter, sunday should belong to the previous week.
1532
1533    if (input != null) {
1534        var weekday = parseIsoWeekday(input, this.localeData());
1535        return this.day(this.day() % 7 ? weekday : weekday - 7);
1536    } else {
1537        return this.day() || 7;
1538    }
1539}
1540
1541var defaultWeekdaysRegex = matchWord;
1542function weekdaysRegex (isStrict) {
1543    if (this._weekdaysParseExact) {
1544        if (!hasOwnProp(this, '_weekdaysRegex')) {
1545            computeWeekdaysParse.call(this);
1546        }
1547        if (isStrict) {
1548            return this._weekdaysStrictRegex;
1549        } else {
1550            return this._weekdaysRegex;
1551        }
1552    } else {
1553        if (!hasOwnProp(this, '_weekdaysRegex')) {
1554            this._weekdaysRegex = defaultWeekdaysRegex;
1555        }
1556        return this._weekdaysStrictRegex && isStrict ?
1557            this._weekdaysStrictRegex : this._weekdaysRegex;
1558    }
1559}
1560
1561var defaultWeekdaysShortRegex = matchWord;
1562function weekdaysShortRegex (isStrict) {
1563    if (this._weekdaysParseExact) {
1564        if (!hasOwnProp(this, '_weekdaysRegex')) {
1565            computeWeekdaysParse.call(this);
1566        }
1567        if (isStrict) {
1568            return this._weekdaysShortStrictRegex;
1569        } else {
1570            return this._weekdaysShortRegex;
1571        }
1572    } else {
1573        if (!hasOwnProp(this, '_weekdaysShortRegex')) {
1574            this._weekdaysShortRegex = defaultWeekdaysShortRegex;
1575        }
1576        return this._weekdaysShortStrictRegex && isStrict ?
1577            this._weekdaysShortStrictRegex : this._weekdaysShortRegex;
1578    }
1579}
1580
1581var defaultWeekdaysMinRegex = matchWord;
1582function weekdaysMinRegex (isStrict) {
1583    if (this._weekdaysParseExact) {
1584        if (!hasOwnProp(this, '_weekdaysRegex')) {
1585            computeWeekdaysParse.call(this);
1586        }
1587        if (isStrict) {
1588            return this._weekdaysMinStrictRegex;
1589        } else {
1590            return this._weekdaysMinRegex;
1591        }
1592    } else {
1593        if (!hasOwnProp(this, '_weekdaysMinRegex')) {
1594            this._weekdaysMinRegex = defaultWeekdaysMinRegex;
1595        }
1596        return this._weekdaysMinStrictRegex && isStrict ?
1597            this._weekdaysMinStrictRegex : this._weekdaysMinRegex;
1598    }
1599}
1600
1601
1602function computeWeekdaysParse () {
1603    function cmpLenRev(a, b) {
1604        return b.length - a.length;
1605    }
1606
1607    var minPieces = [], shortPieces = [], longPieces = [], mixedPieces = [],
1608        i, mom, minp, shortp, longp;
1609    for (i = 0; i < 7; i++) {
1610        // make the regex if we don't have it already
1611        mom = createUTC([2000, 1]).day(i);
1612        minp = this.weekdaysMin(mom, '');
1613        shortp = this.weekdaysShort(mom, '');
1614        longp = this.weekdays(mom, '');
1615        minPieces.push(minp);
1616        shortPieces.push(shortp);
1617        longPieces.push(longp);
1618        mixedPieces.push(minp);
1619        mixedPieces.push(shortp);
1620        mixedPieces.push(longp);
1621    }
1622    // Sorting makes sure if one weekday (or abbr) is a prefix of another it
1623    // will match the longer piece.
1624    minPieces.sort(cmpLenRev);
1625    shortPieces.sort(cmpLenRev);
1626    longPieces.sort(cmpLenRev);
1627    mixedPieces.sort(cmpLenRev);
1628    for (i = 0; i < 7; i++) {
1629        shortPieces[i] = regexEscape(shortPieces[i]);
1630        longPieces[i] = regexEscape(longPieces[i]);
1631        mixedPieces[i] = regexEscape(mixedPieces[i]);
1632    }
1633
1634    this._weekdaysRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
1635    this._weekdaysShortRegex = this._weekdaysRegex;
1636    this._weekdaysMinRegex = this._weekdaysRegex;
1637
1638    this._weekdaysStrictRegex = new RegExp('^(' + longPieces.join('|') + ')', 'i');
1639    this._weekdaysShortStrictRegex = new RegExp('^(' + shortPieces.join('|') + ')', 'i');
1640    this._weekdaysMinStrictRegex = new RegExp('^(' + minPieces.join('|') + ')', 'i');
1641}
1642
1643// FORMATTING
1644
1645function hFormat() {
1646    return this.hours() % 12 || 12;
1647}
1648
1649function kFormat() {
1650    return this.hours() || 24;
1651}
1652
1653addFormatToken('H', ['HH', 2], 0, 'hour');
1654addFormatToken('h', ['hh', 2], 0, hFormat);
1655addFormatToken('k', ['kk', 2], 0, kFormat);
1656
1657addFormatToken('hmm', 0, 0, function () {
1658    return '' + hFormat.apply(this) + zeroFill(this.minutes(), 2);
1659});
1660
1661addFormatToken('hmmss', 0, 0, function () {
1662    return '' + hFormat.apply(this) + zeroFill(this.minutes(), 2) +
1663        zeroFill(this.seconds(), 2);
1664});
1665
1666addFormatToken('Hmm', 0, 0, function () {
1667    return '' + this.hours() + zeroFill(this.minutes(), 2);
1668});
1669
1670addFormatToken('Hmmss', 0, 0, function () {
1671    return '' + this.hours() + zeroFill(this.minutes(), 2) +
1672        zeroFill(this.seconds(), 2);
1673});
1674
1675function meridiem (token, lowercase) {
1676    addFormatToken(token, 0, 0, function () {
1677        return this.localeData().meridiem(this.hours(), this.minutes(), lowercase);
1678    });
1679}
1680
1681meridiem('a', true);
1682meridiem('A', false);
1683
1684// ALIASES
1685
1686addUnitAlias('hour', 'h');
1687
1688// PRIORITY
1689addUnitPriority('hour', 13);
1690
1691// PARSING
1692
1693function matchMeridiem (isStrict, locale) {
1694    return locale._meridiemParse;
1695}
1696
1697addRegexToken('a',  matchMeridiem);
1698addRegexToken('A',  matchMeridiem);
1699addRegexToken('H',  match1to2);
1700addRegexToken('h',  match1to2);
1701addRegexToken('k',  match1to2);
1702addRegexToken('HH', match1to2, match2);
1703addRegexToken('hh', match1to2, match2);
1704addRegexToken('kk', match1to2, match2);
1705
1706addRegexToken('hmm', match3to4);
1707addRegexToken('hmmss', match5to6);
1708addRegexToken('Hmm', match3to4);
1709addRegexToken('Hmmss', match5to6);
1710
1711addParseToken(['H', 'HH'], HOUR);
1712addParseToken(['k', 'kk'], function (input, array, config) {
1713    var kInput = toInt(input);
1714    array[HOUR] = kInput === 24 ? 0 : kInput;
1715});
1716addParseToken(['a', 'A'], function (input, array, config) {
1717    config._isPm = config._locale.isPM(input);
1718    config._meridiem = input;
1719});
1720addParseToken(['h', 'hh'], function (input, array, config) {
1721    array[HOUR] = toInt(input);
1722    getParsingFlags(config).bigHour = true;
1723});
1724addParseToken('hmm', function (input, array, config) {
1725    var pos = input.length - 2;
1726    array[HOUR] = toInt(input.substr(0, pos));
1727    array[MINUTE] = toInt(input.substr(pos));
1728    getParsingFlags(config).bigHour = true;
1729});
1730addParseToken('hmmss', function (input, array, config) {
1731    var pos1 = input.length - 4;
1732    var pos2 = input.length - 2;
1733    array[HOUR] = toInt(input.substr(0, pos1));
1734    array[MINUTE] = toInt(input.substr(pos1, 2));
1735    array[SECOND] = toInt(input.substr(pos2));
1736    getParsingFlags(config).bigHour = true;
1737});
1738addParseToken('Hmm', function (input, array, config) {
1739    var pos = input.length - 2;
1740    array[HOUR] = toInt(input.substr(0, pos));
1741    array[MINUTE] = toInt(input.substr(pos));
1742});
1743addParseToken('Hmmss', function (input, array, config) {
1744    var pos1 = input.length - 4;
1745    var pos2 = input.length - 2;
1746    array[HOUR] = toInt(input.substr(0, pos1));
1747    array[MINUTE] = toInt(input.substr(pos1, 2));
1748    array[SECOND] = toInt(input.substr(pos2));
1749});
1750
1751// LOCALES
1752
1753function localeIsPM (input) {
1754    // IE8 Quirks Mode & IE7 Standards Mode do not allow accessing strings like arrays
1755    // Using charAt should be more compatible.
1756    return ((input + '').toLowerCase().charAt(0) === 'p');
1757}
1758
1759var defaultLocaleMeridiemParse = /[ap]\.?m?\.?/i;
1760function localeMeridiem (hours, minutes, isLower) {
1761    if (hours > 11) {
1762        return isLower ? 'pm' : 'PM';
1763    } else {
1764        return isLower ? 'am' : 'AM';
1765    }
1766}
1767
1768
1769// MOMENTS
1770
1771// Setting the hour should keep the time, because the user explicitly
1772// specified which hour he wants. So trying to maintain the same hour (in
1773// a new timezone) makes sense. Adding/subtracting hours does not follow
1774// this rule.
1775var getSetHour = makeGetSet('Hours', true);
1776
1777// months
1778// week
1779// weekdays
1780// meridiem
1781var baseConfig = {
1782    calendar: defaultCalendar,
1783    longDateFormat: defaultLongDateFormat,
1784    invalidDate: defaultInvalidDate,
1785    ordinal: defaultOrdinal,
1786    dayOfMonthOrdinalParse: defaultDayOfMonthOrdinalParse,
1787    relativeTime: defaultRelativeTime,
1788
1789    months: defaultLocaleMonths,
1790    monthsShort: defaultLocaleMonthsShort,
1791
1792    week: defaultLocaleWeek,
1793
1794    weekdays: defaultLocaleWeekdays,
1795    weekdaysMin: defaultLocaleWeekdaysMin,
1796    weekdaysShort: defaultLocaleWeekdaysShort,
1797
1798    meridiemParse: defaultLocaleMeridiemParse
1799};
1800
1801// internal storage for locale config files
1802var locales = {};
1803var localeFamilies = {};
1804var globalLocale;
1805
1806function normalizeLocale(key) {
1807    return key ? key.toLowerCase().replace('_', '-') : key;
1808}
1809
1810// pick the locale from the array
1811// try ['en-au', 'en-gb'] as 'en-au', 'en-gb', 'en', as in move through the list trying each
1812// substring from most specific to least, but move to the next array item if it's a more specific variant than the current root
1813function chooseLocale(names) {
1814    var i = 0, j, next, locale, split;
1815
1816    while (i < names.length) {
1817        split = normalizeLocale(names[i]).split('-');
1818        j = split.length;
1819        next = normalizeLocale(names[i + 1]);
1820        next = next ? next.split('-') : null;
1821        while (j > 0) {
1822            locale = loadLocale(split.slice(0, j).join('-'));
1823            if (locale) {
1824                return locale;
1825            }
1826            if (next && next.length >= j && compareArrays(split, next, true) >= j - 1) {
1827                //the next array item is better than a shallower substring of this one
1828                break;
1829            }
1830            j--;
1831        }
1832        i++;
1833    }
1834    return null;
1835}
1836
1837function loadLocale(name) {
1838    var oldLocale = null;
1839    // TODO: Find a better way to register and load all the locales in Node
1840    if (!locales[name] && (typeof module !== 'undefined') &&
1841            module && module.exports) {
1842        try {
1843            oldLocale = globalLocale._abbr;
1844            var aliasedRequire = require;
1845            aliasedRequire('./locale/' + name);
1846            getSetGlobalLocale(oldLocale);
1847        } catch (e) {}
1848    }
1849    return locales[name];
1850}
1851
1852// This function will load locale and then set the global locale.  If
1853// no arguments are passed in, it will simply return the current global
1854// locale key.
1855function getSetGlobalLocale (key, values) {
1856    var data;
1857    if (key) {
1858        if (isUndefined(values)) {
1859            data = getLocale(key);
1860        }
1861        else {
1862            data = defineLocale(key, values);
1863        }
1864
1865        if (data) {
1866            // moment.duration._locale = moment._locale = data;
1867            globalLocale = data;
1868        }
1869    }
1870
1871    return globalLocale._abbr;
1872}
1873
1874function defineLocale (name, config) {
1875    if (config !== null) {
1876        var parentConfig = baseConfig;
1877        config.abbr = name;
1878        if (locales[name] != null) {
1879            deprecateSimple('defineLocaleOverride',
1880                    'use moment.updateLocale(localeName, config) to change ' +
1881                    'an existing locale. moment.defineLocale(localeName, ' +
1882                    'config) should only be used for creating a new locale ' +
1883                    'See http://momentjs.com/guides/#/warnings/define-locale/ for more info.');
1884            parentConfig = locales[name]._config;
1885        } else if (config.parentLocale != null) {
1886            if (locales[config.parentLocale] != null) {
1887                parentConfig = locales[config.parentLocale]._config;
1888            } else {
1889                if (!localeFamilies[config.parentLocale]) {
1890                    localeFamilies[config.parentLocale] = [];
1891                }
1892                localeFamilies[config.parentLocale].push({
1893                    name: name,
1894                    config: config
1895                });
1896                return null;
1897            }
1898        }
1899        locales[name] = new Locale(mergeConfigs(parentConfig, config));
1900
1901        if (localeFamilies[name]) {
1902            localeFamilies[name].forEach(function (x) {
1903                defineLocale(x.name, x.config);
1904            });
1905        }
1906
1907        // backwards compat for now: also set the locale
1908        // make sure we set the locale AFTER all child locales have been
1909        // created, so we won't end up with the child locale set.
1910        getSetGlobalLocale(name);
1911
1912
1913        return locales[name];
1914    } else {
1915        // useful for testing
1916        delete locales[name];
1917        return null;
1918    }
1919}
1920
1921function updateLocale(name, config) {
1922    if (config != null) {
1923        var locale, tmpLocale, parentConfig = baseConfig;
1924        // MERGE
1925        tmpLocale = loadLocale(name);
1926        if (tmpLocale != null) {
1927            parentConfig = tmpLocale._config;
1928        }
1929        config = mergeConfigs(parentConfig, config);
1930        locale = new Locale(config);
1931        locale.parentLocale = locales[name];
1932        locales[name] = locale;
1933
1934        // backwards compat for now: also set the locale
1935        getSetGlobalLocale(name);
1936    } else {
1937        // pass null for config to unupdate, useful for tests
1938        if (locales[name] != null) {
1939            if (locales[name].parentLocale != null) {
1940                locales[name] = locales[name].parentLocale;
1941            } else if (locales[name] != null) {
1942                delete locales[name];
1943            }
1944        }
1945    }
1946    return locales[name];
1947}
1948
1949// returns locale data
1950function getLocale (key) {
1951    var locale;
1952
1953    if (key && key._locale && key._locale._abbr) {
1954        key = key._locale._abbr;
1955    }
1956
1957    if (!key) {
1958        return globalLocale;
1959    }
1960
1961    if (!isArray(key)) {
1962        //short-circuit everything else
1963        locale = loadLocale(key);
1964        if (locale) {
1965            return locale;
1966        }
1967        key = [key];
1968    }
1969
1970    return chooseLocale(key);
1971}
1972
1973function listLocales() {
1974    return keys(locales);
1975}
1976
1977function checkOverflow (m) {
1978    var overflow;
1979    var a = m._a;
1980
1981    if (a && getParsingFlags(m).overflow === -2) {
1982        overflow =
1983            a[MONTH]       < 0 || a[MONTH]       > 11  ? MONTH :
1984            a[DATE]        < 1 || a[DATE]        > daysInMonth(a[YEAR], a[MONTH]) ? DATE :
1985            a[HOUR]        < 0 || a[HOUR]        > 24 || (a[HOUR] === 24 && (a[MINUTE] !== 0 || a[SECOND] !== 0 || a[MILLISECOND] !== 0)) ? HOUR :
1986            a[MINUTE]      < 0 || a[MINUTE]      > 59  ? MINUTE :
1987            a[SECOND]      < 0 || a[SECOND]      > 59  ? SECOND :
1988            a[MILLISECOND] < 0 || a[MILLISECOND] > 999 ? MILLISECOND :
1989            -1;
1990
1991        if (getParsingFlags(m)._overflowDayOfYear && (overflow < YEAR || overflow > DATE)) {
1992            overflow = DATE;
1993        }
1994        if (getParsingFlags(m)._overflowWeeks && overflow === -1) {
1995            overflow = WEEK;
1996        }
1997        if (getParsingFlags(m)._overflowWeekday && overflow === -1) {
1998            overflow = WEEKDAY;
1999        }
2000
2001        getParsingFlags(m).overflow = overflow;
2002    }
2003
2004    return m;
2005}
2006
2007// Pick the first defined of two or three arguments.
2008function defaults(a, b, c) {
2009    if (a != null) {
2010        return a;
2011    }
2012    if (b != null) {
2013        return b;
2014    }
2015    return c;
2016}
2017
2018function currentDateArray(config) {
2019    // hooks is actually the exported moment object
2020    var nowValue = new Date(hooks.now());
2021    if (config._useUTC) {
2022        return [nowValue.getUTCFullYear(), nowValue.getUTCMonth(), nowValue.getUTCDate()];
2023    }
2024    return [nowValue.getFullYear(), nowValue.getMonth(), nowValue.getDate()];
2025}
2026
2027// convert an array to a date.
2028// the array should mirror the parameters below
2029// note: all values past the year are optional and will default to the lowest possible value.
2030// [year, month, day , hour, minute, second, millisecond]
2031function configFromArray (config) {
2032    var i, date, input = [], currentDate, yearToUse;
2033
2034    if (config._d) {
2035        return;
2036    }
2037
2038    currentDate = currentDateArray(config);
2039
2040    //compute day of the year from weeks and weekdays
2041    if (config._w && config._a[DATE] == null && config._a[MONTH] == null) {
2042        dayOfYearFromWeekInfo(config);
2043    }
2044
2045    //if the day of the year is set, figure out what it is
2046    if (config._dayOfYear != null) {
2047        yearToUse = defaults(config._a[YEAR], currentDate[YEAR]);
2048
2049        if (config._dayOfYear > daysInYear(yearToUse) || config._dayOfYear === 0) {
2050            getParsingFlags(config)._overflowDayOfYear = true;
2051        }
2052
2053        date = createUTCDate(yearToUse, 0, config._dayOfYear);
2054        config._a[MONTH] = date.getUTCMonth();
2055        config._a[DATE] = date.getUTCDate();
2056    }
2057
2058    // Default to current date.
2059    // * if no year, month, day of month are given, default to today
2060    // * if day of month is given, default month and year
2061    // * if month is given, default only year
2062    // * if year is given, don't default anything
2063    for (i = 0; i < 3 && config._a[i] == null; ++i) {
2064        config._a[i] = input[i] = currentDate[i];
2065    }
2066
2067    // Zero out whatever was not defaulted, including time
2068    for (; i < 7; i++) {
2069        config._a[i] = input[i] = (config._a[i] == null) ? (i === 2 ? 1 : 0) : config._a[i];
2070    }
2071
2072    // Check for 24:00:00.000
2073    if (config._a[HOUR] === 24 &&
2074            config._a[MINUTE] === 0 &&
2075            config._a[SECOND] === 0 &&
2076            config._a[MILLISECOND] === 0) {
2077        config._nextDay = true;
2078        config._a[HOUR] = 0;
2079    }
2080
2081    config._d = (config._useUTC ? createUTCDate : createDate).apply(null, input);
2082    // Apply timezone offset from input. The actual utcOffset can be changed
2083    // with parseZone.
2084    if (config._tzm != null) {
2085        config._d.setUTCMinutes(config._d.getUTCMinutes() - config._tzm);
2086    }
2087
2088    if (config._nextDay) {
2089        config._a[HOUR] = 24;
2090    }
2091
2092    // check for mismatching day of week
2093    if (config._w && typeof config._w.d !== 'undefined' && config._w.d !== config._d.getDay()) {
2094        getParsingFlags(config).weekdayMismatch = true;
2095    }
2096}
2097
2098function dayOfYearFromWeekInfo(config) {
2099    var w, weekYear, week, weekday, dow, doy, temp, weekdayOverflow;
2100
2101    w = config._w;
2102    if (w.GG != null || w.W != null || w.E != null) {
2103        dow = 1;
2104        doy = 4;
2105
2106        // TODO: We need to take the current isoWeekYear, but that depends on
2107        // how we interpret now (local, utc, fixed offset). So create
2108        // a now version of current config (take local/utc/offset flags, and
2109        // create now).
2110        weekYear = defaults(w.GG, config._a[YEAR], weekOfYear(createLocal(), 1, 4).year);
2111        week = defaults(w.W, 1);
2112        weekday = defaults(w.E, 1);
2113        if (weekday < 1 || weekday > 7) {
2114            weekdayOverflow = true;
2115        }
2116    } else {
2117        dow = config._locale._week.dow;
2118        doy = config._locale._week.doy;
2119
2120        var curWeek = weekOfYear(createLocal(), dow, doy);
2121
2122        weekYear = defaults(w.gg, config._a[YEAR], curWeek.year);
2123
2124        // Default to current week.
2125        week = defaults(w.w, curWeek.week);
2126
2127        if (w.d != null) {
2128            // weekday -- low day numbers are considered next week
2129            weekday = w.d;
2130            if (weekday < 0 || weekday > 6) {
2131                weekdayOverflow = true;
2132            }
2133        } else if (w.e != null) {
2134            // local weekday -- counting starts from begining of week
2135            weekday = w.e + dow;
2136            if (w.e < 0 || w.e > 6) {
2137                weekdayOverflow = true;
2138            }
2139        } else {
2140            // default to begining of week
2141            weekday = dow;
2142        }
2143    }
2144    if (week < 1 || week > weeksInYear(weekYear, dow, doy)) {
2145        getParsingFlags(config)._overflowWeeks = true;
2146    } else if (weekdayOverflow != null) {
2147        getParsingFlags(config)._overflowWeekday = true;
2148    } else {
2149        temp = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy);
2150        config._a[YEAR] = temp.year;
2151        config._dayOfYear = temp.dayOfYear;
2152    }
2153}
2154
2155// iso 8601 regex
2156// 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)
2157var 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)?)?$/;
2158var basicIsoRegex = /^\s*((?:[+-]\d{6}|\d{4})(?:\d\d\d\d|W\d\d\d|W\d\d|\d\d\d|\d\d))(?:(T| )(\d\d(?:\d\d(?:\d\d(?:[.,]\d+)?)?)?)([\+\-]\d\d(?::?\d\d)?|\s*Z)?)?$/;
2159
2160var tzRegex = /Z|[+-]\d\d(?::?\d\d)?/;
2161
2162var isoDates = [
2163    ['YYYYYY-MM-DD', /[+-]\d{6}-\d\d-\d\d/],
2164    ['YYYY-MM-DD', /\d{4}-\d\d-\d\d/],
2165    ['GGGG-[W]WW-E', /\d{4}-W\d\d-\d/],
2166    ['GGGG-[W]WW', /\d{4}-W\d\d/, false],
2167    ['YYYY-DDD', /\d{4}-\d{3}/],
2168    ['YYYY-MM', /\d{4}-\d\d/, false],
2169    ['YYYYYYMMDD', /[+-]\d{10}/],
2170    ['YYYYMMDD', /\d{8}/],
2171    // YYYYMM is NOT allowed by the standard
2172    ['GGGG[W]WWE', /\d{4}W\d{3}/],
2173    ['GGGG[W]WW', /\d{4}W\d{2}/, false],
2174    ['YYYYDDD', /\d{7}/]
2175];
2176
2177// iso time formats and regexes
2178var isoTimes = [
2179    ['HH:mm:ss.SSSS', /\d\d:\d\d:\d\d\.\d+/],
2180    ['HH:mm:ss,SSSS', /\d\d:\d\d:\d\d,\d+/],
2181    ['HH:mm:ss', /\d\d:\d\d:\d\d/],
2182    ['HH:mm', /\d\d:\d\d/],
2183    ['HHmmss.SSSS', /\d\d\d\d\d\d\.\d+/],
2184    ['HHmmss,SSSS', /\d\d\d\d\d\d,\d+/],
2185    ['HHmmss', /\d\d\d\d\d\d/],
2186    ['HHmm', /\d\d\d\d/],
2187    ['HH', /\d\d/]
2188];
2189
2190var aspNetJsonRegex = /^\/?Date\((\-?\d+)/i;
2191
2192// date from iso format
2193function configFromISO(config) {
2194    var i, l,
2195        string = config._i,
2196        match = extendedIsoRegex.exec(string) || basicIsoRegex.exec(string),
2197        allowTime, dateFormat, timeFormat, tzFormat;
2198
2199    if (match) {
2200        getParsingFlags(config).iso = true;
2201
2202        for (i = 0, l = isoDates.length; i < l; i++) {
2203            if (isoDates[i][1].exec(match[1])) {
2204                dateFormat = isoDates[i][0];
2205                allowTime = isoDates[i][2] !== false;
2206                break;
2207            }
2208        }
2209        if (dateFormat == null) {
2210            config._isValid = false;
2211            return;
2212        }
2213        if (match[3]) {
2214            for (i = 0, l = isoTimes.length; i < l; i++) {
2215                if (isoTimes[i][1].exec(match[3])) {
2216                    // match[2] should be 'T' or space
2217                    timeFormat = (match[2] || ' ') + isoTimes[i][0];
2218                    break;
2219                }
2220            }
2221            if (timeFormat == null) {
2222                config._isValid = false;
2223                return;
2224            }
2225        }
2226        if (!allowTime && timeFormat != null) {
2227            config._isValid = false;
2228            return;
2229        }
2230        if (match[4]) {
2231            if (tzRegex.exec(match[4])) {
2232                tzFormat = 'Z';
2233            } else {
2234                config._isValid = false;
2235                return;
2236            }
2237        }
2238        config._f = dateFormat + (timeFormat || '') + (tzFormat || '');
2239        configFromStringAndFormat(config);
2240    } else {
2241        config._isValid = false;
2242    }
2243}
2244
2245// RFC 2822 regex: For details see https://tools.ietf.org/html/rfc2822#section-3.3
2246var rfc2822 = /^(?:(Mon|Tue|Wed|Thu|Fri|Sat|Sun),?\s)?(\d{1,2})\s(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\s(\d{2,4})\s(\d\d):(\d\d)(?::(\d\d))?\s(?:(UT|GMT|[ECMP][SD]T)|([Zz])|([+-]\d{4}))$/;
2247
2248function extractFromRFC2822Strings(yearStr, monthStr, dayStr, hourStr, minuteStr, secondStr) {
2249    var result = [
2250        untruncateYear(yearStr),
2251        defaultLocaleMonthsShort.indexOf(monthStr),
2252        parseInt(dayStr, 10),
2253        parseInt(hourStr, 10),
2254        parseInt(minuteStr, 10)
2255    ];
2256
2257    if (secondStr) {
2258        result.push(parseInt(secondStr, 10));
2259    }
2260
2261    return result;
2262}
2263
2264function untruncateYear(yearStr) {
2265    var year = parseInt(yearStr, 10);
2266    if (year <= 49) {
2267        return 2000 + year;
2268    } else if (year <= 999) {
2269        return 1900 + year;
2270    }
2271    return year;
2272}
2273
2274function preprocessRFC2822(s) {
2275    // Remove comments and folding whitespace and replace multiple-spaces with a single space
2276    return s.replace(/\([^)]*\)|[\n\t]/g, ' ').replace(/(\s\s+)/g, ' ').trim();
2277}
2278
2279function checkWeekday(weekdayStr, parsedInput, config) {
2280    if (weekdayStr) {
2281        // TODO: Replace the vanilla JS Date object with an indepentent day-of-week check.
2282        var weekdayProvided = defaultLocaleWeekdaysShort.indexOf(weekdayStr),
2283            weekdayActual = new Date(parsedInput[0], parsedInput[1], parsedInput[2]).getDay();
2284        if (weekdayProvided !== weekdayActual) {
2285            getParsingFlags(config).weekdayMismatch = true;
2286            config._isValid = false;
2287            return false;
2288        }
2289    }
2290    return true;
2291}
2292
2293var obsOffsets = {
2294    UT: 0,
2295    GMT: 0,
2296    EDT: -4 * 60,
2297    EST: -5 * 60,
2298    CDT: -5 * 60,
2299    CST: -6 * 60,
2300    MDT: -6 * 60,
2301    MST: -7 * 60,
2302    PDT: -7 * 60,
2303    PST: -8 * 60
2304};
2305
2306function calculateOffset(obsOffset, militaryOffset, numOffset) {
2307    if (obsOffset) {
2308        return obsOffsets[obsOffset];
2309    } else if (militaryOffset) {
2310        // the only allowed military tz is Z
2311        return 0;
2312    } else {
2313        var hm = parseInt(numOffset, 10);
2314        var m = hm % 100, h = (hm - m) / 100;
2315        return h * 60 + m;
2316    }
2317}
2318
2319// date and time from ref 2822 format
2320function configFromRFC2822(config) {
2321    var match = rfc2822.exec(preprocessRFC2822(config._i));
2322    if (match) {
2323        var parsedArray = extractFromRFC2822Strings(match[4], match[3], match[2], match[5], match[6], match[7]);
2324        if (!checkWeekday(match[1], parsedArray, config)) {
2325            return;
2326        }
2327
2328        config._a = parsedArray;
2329        config._tzm = calculateOffset(match[8], match[9], match[10]);
2330
2331        config._d = createUTCDate.apply(null, config._a);
2332        config._d.setUTCMinutes(config._d.getUTCMinutes() - config._tzm);
2333
2334        getParsingFlags(config).rfc2822 = true;
2335    } else {
2336        config._isValid = false;
2337    }
2338}
2339
2340// date from iso format or fallback
2341function configFromString(config) {
2342    var matched = aspNetJsonRegex.exec(config._i);
2343
2344    if (matched !== null) {
2345        config._d = new Date(+matched[1]);
2346        return;
2347    }
2348
2349    configFromISO(config);
2350    if (config._isValid === false) {
2351        delete config._isValid;
2352    } else {
2353        return;
2354    }
2355
2356    configFromRFC2822(config);
2357    if (config._isValid === false) {
2358        delete config._isValid;
2359    } else {
2360        return;
2361    }
2362
2363    // Final attempt, use Input Fallback
2364    hooks.createFromInputFallback(config);
2365}
2366
2367hooks.createFromInputFallback = deprecate(
2368    'value provided is not in a recognized RFC2822 or ISO format. moment construction falls back to js Date(), ' +
2369    'which is not reliable across all browsers and versions. Non RFC2822/ISO date formats are ' +
2370    'discouraged and will be removed in an upcoming major release. Please refer to ' +
2371    'http://momentjs.com/guides/#/warnings/js-date/ for more info.',
2372    function (config) {
2373        config._d = new Date(config._i + (config._useUTC ? ' UTC' : ''));
2374    }
2375);
2376
2377// constant that refers to the ISO standard
2378hooks.ISO_8601 = function () {};
2379
2380// constant that refers to the RFC 2822 form
2381hooks.RFC_2822 = function () {};
2382
2383// date from string and format string
2384function configFromStringAndFormat(config) {
2385    // TODO: Move this to another part of the creation flow to prevent circular deps
2386    if (config._f === hooks.ISO_8601) {
2387        configFromISO(config);
2388        return;
2389    }
2390    if (config._f === hooks.RFC_2822) {
2391        configFromRFC2822(config);
2392        return;
2393    }
2394    config._a = [];
2395    getParsingFlags(config).empty = true;
2396
2397    // This array is used to make a Date, either with `new Date` or `Date.UTC`
2398    var string = '' + config._i,
2399        i, parsedInput, tokens, token, skipped,
2400        stringLength = string.length,
2401        totalParsedInputLength = 0;
2402
2403    tokens = expandFormat(config._f, config._locale).match(formattingTokens) || [];
2404
2405    for (i = 0; i < tokens.length; i++) {
2406        token = tokens[i];
2407        parsedInput = (string.match(getParseRegexForToken(token, config)) || [])[0];
2408        // console.log('token', token, 'parsedInput', parsedInput,
2409        //         'regex', getParseRegexForToken(token, config));
2410        if (parsedInput) {
2411            skipped = string.substr(0, string.indexOf(parsedInput));
2412            if (skipped.length > 0) {
2413                getParsingFlags(config).unusedInput.push(skipped);
2414            }
2415            string = string.slice(string.indexOf(parsedInput) + parsedInput.length);
2416            totalParsedInputLength += parsedInput.length;
2417        }
2418        // don't parse if it's not a known token
2419        if (formatTokenFunctions[token]) {
2420            if (parsedInput) {
2421                getParsingFlags(config).empty = false;
2422            }
2423            else {
2424                getParsingFlags(config).unusedTokens.push(token);
2425            }
2426            addTimeToArrayFromToken(token, parsedInput, config);
2427        }
2428        else if (config._strict && !parsedInput) {
2429            getParsingFlags(config).unusedTokens.push(token);
2430        }
2431    }
2432
2433    // add remaining unparsed input length to the string
2434    getParsingFlags(config).charsLeftOver = stringLength - totalParsedInputLength;
2435    if (string.length > 0) {
2436        getParsingFlags(config).unusedInput.push(string);
2437    }
2438
2439    // clear _12h flag if hour is <= 12
2440    if (config._a[HOUR] <= 12 &&
2441        getParsingFlags(config).bigHour === true &&
2442        config._a[HOUR] > 0) {
2443        getParsingFlags(config).bigHour = undefined;
2444    }
2445
2446    getParsingFlags(config).parsedDateParts = config._a.slice(0);
2447    getParsingFlags(config).meridiem = config._meridiem;
2448    // handle meridiem
2449    config._a[HOUR] = meridiemFixWrap(config._locale, config._a[HOUR], config._meridiem);
2450
2451    configFromArray(config);
2452    checkOverflow(config);
2453}
2454
2455
2456function meridiemFixWrap (locale, hour, meridiem) {
2457    var isPm;
2458
2459    if (meridiem == null) {
2460        // nothing to do
2461        return hour;
2462    }
2463    if (locale.meridiemHour != null) {
2464        return locale.meridiemHour(hour, meridiem);
2465    } else if (locale.isPM != null) {
2466        // Fallback
2467        isPm = locale.isPM(meridiem);
2468        if (isPm && hour < 12) {
2469            hour += 12;
2470        }
2471        if (!isPm && hour === 12) {
2472            hour = 0;
2473        }
2474        return hour;
2475    } else {
2476        // this is not supposed to happen
2477        return hour;
2478    }
2479}
2480
2481// date from string and array of format strings
2482function configFromStringAndArray(config) {
2483    var tempConfig,
2484        bestMoment,
2485
2486        scoreToBeat,
2487        i,
2488        currentScore;
2489
2490    if (config._f.length === 0) {
2491        getParsingFlags(config).invalidFormat = true;
2492        config._d = new Date(NaN);
2493        return;
2494    }
2495
2496    for (i = 0; i < config._f.length; i++) {
2497        currentScore = 0;
2498        tempConfig = copyConfig({}, config);
2499        if (config._useUTC != null) {
2500            tempConfig._useUTC = config._useUTC;
2501        }
2502        tempConfig._f = config._f[i];
2503        configFromStringAndFormat(tempConfig);
2504
2505        if (!isValid(tempConfig)) {
2506            continue;
2507        }
2508
2509        // if there is any input that was not parsed add a penalty for that format
2510        currentScore += getParsingFlags(tempConfig).charsLeftOver;
2511
2512        //or tokens
2513        currentScore += getParsingFlags(tempConfig).unusedTokens.length * 10;
2514
2515        getParsingFlags(tempConfig).score = currentScore;
2516
2517        if (scoreToBeat == null || currentScore < scoreToBeat) {
2518            scoreToBeat = currentScore;
2519            bestMoment = tempConfig;
2520        }
2521    }
2522
2523    extend(config, bestMoment || tempConfig);
2524}
2525
2526function configFromObject(config) {
2527    if (config._d) {
2528        return;
2529    }
2530
2531    var i = normalizeObjectUnits(config._i);
2532    config._a = map([i.year, i.month, i.day || i.date, i.hour, i.minute, i.second, i.millisecond], function (obj) {
2533        return obj && parseInt(obj, 10);
2534    });
2535
2536    configFromArray(config);
2537}
2538
2539function createFromConfig (config) {
2540    var res = new Moment(checkOverflow(prepareConfig(config)));
2541    if (res._nextDay) {
2542        // Adding is smart enough around DST
2543        res.add(1, 'd');
2544        res._nextDay = undefined;
2545    }
2546
2547    return res;
2548}
2549
2550function prepareConfig (config) {
2551    var input = config._i,
2552        format = config._f;
2553
2554    config._locale = config._locale || getLocale(config._l);
2555
2556    if (input === null || (format === undefined && input === '')) {
2557        return createInvalid({nullInput: true});
2558    }
2559
2560    if (typeof input === 'string') {
2561        config._i = input = config._locale.preparse(input);
2562    }
2563
2564    if (isMoment(input)) {
2565        return new Moment(checkOverflow(input));
2566    } else if (isDate(input)) {
2567        config._d = input;
2568    } else if (isArray(format)) {
2569        configFromStringAndArray(config);
2570    } else if (format) {
2571        configFromStringAndFormat(config);
2572    }  else {
2573        configFromInput(config);
2574    }
2575
2576    if (!isValid(config)) {
2577        config._d = null;
2578    }
2579
2580    return config;
2581}
2582
2583function configFromInput(config) {
2584    var input = config._i;
2585    if (isUndefined(input)) {
2586        config._d = new Date(hooks.now());
2587    } else if (isDate(input)) {
2588        config._d = new Date(input.valueOf());
2589    } else if (typeof input === 'string') {
2590        configFromString(config);
2591    } else if (isArray(input)) {
2592        config._a = map(input.slice(0), function (obj) {
2593            return parseInt(obj, 10);
2594        });
2595        configFromArray(config);
2596    } else if (isObject(input)) {
2597        configFromObject(config);
2598    } else if (isNumber(input)) {
2599        // from milliseconds
2600        config._d = new Date(input);
2601    } else {
2602        hooks.createFromInputFallback(config);
2603    }
2604}
2605
2606function createLocalOrUTC (input, format, locale, strict, isUTC) {
2607    var c = {};
2608
2609    if (locale === true || locale === false) {
2610        strict = locale;
2611        locale = undefined;
2612    }
2613
2614    if ((isObject(input) && isObjectEmpty(input)) ||
2615            (isArray(input) && input.length === 0)) {
2616        input = undefined;
2617    }
2618    // object construction must be done this way.
2619    // https://github.com/moment/moment/issues/1423
2620    c._isAMomentObject = true;
2621    c._useUTC = c._isUTC = isUTC;
2622    c._l = locale;
2623    c._i = input;
2624    c._f = format;
2625    c._strict = strict;
2626
2627    return createFromConfig(c);
2628}
2629
2630function createLocal (input, format, locale, strict) {
2631    return createLocalOrUTC(input, format, locale, strict, false);
2632}
2633
2634var prototypeMin = deprecate(
2635    'moment().min is deprecated, use moment.max instead. http://momentjs.com/guides/#/warnings/min-max/',
2636    function () {
2637        var other = createLocal.apply(null, arguments);
2638        if (this.isValid() && other.isValid()) {
2639            return other < this ? this : other;
2640        } else {
2641            return createInvalid();
2642        }
2643    }
2644);
2645
2646var prototypeMax = deprecate(
2647    'moment().max is deprecated, use moment.min instead. http://momentjs.com/guides/#/warnings/min-max/',
2648    function () {
2649        var other = createLocal.apply(null, arguments);
2650        if (this.isValid() && other.isValid()) {
2651            return other > this ? this : other;
2652        } else {
2653            return createInvalid();
2654        }
2655    }
2656);
2657
2658// Pick a moment m from moments so that m[fn](other) is true for all
2659// other. This relies on the function fn to be transitive.
2660//
2661// moments should either be an array of moment objects or an array, whose
2662// first element is an array of moment objects.
2663function pickBy(fn, moments) {
2664    var res, i;
2665    if (moments.length === 1 && isArray(moments[0])) {
2666        moments = moments[0];
2667    }
2668    if (!moments.length) {
2669        return createLocal();
2670    }
2671    res = moments[0];
2672    for (i = 1; i < moments.length; ++i) {
2673        if (!moments[i].isValid() || moments[i][fn](res)) {
2674            res = moments[i];
2675        }
2676    }
2677    return res;
2678}
2679
2680// TODO: Use [].sort instead?
2681function min () {
2682    var args = [].slice.call(arguments, 0);
2683
2684    return pickBy('isBefore', args);
2685}
2686
2687function max () {
2688    var args = [].slice.call(arguments, 0);
2689
2690    return pickBy('isAfter', args);
2691}
2692
2693var now = function () {
2694    return Date.now ? Date.now() : +(new Date());
2695};
2696
2697var ordering = ['year', 'quarter', 'month', 'week', 'day', 'hour', 'minute', 'second', 'millisecond'];
2698
2699function isDurationValid(m) {
2700    for (var key in m) {
2701        if (!(indexOf.call(ordering, key) !== -1 && (m[key] == null || !isNaN(m[key])))) {
2702            return false;
2703        }
2704    }
2705
2706    var unitHasDecimal = false;
2707    for (var i = 0; i < ordering.length; ++i) {
2708        if (m[ordering[i]]) {
2709            if (unitHasDecimal) {
2710                return false; // only allow non-integers for smallest unit
2711            }
2712            if (parseFloat(m[ordering[i]]) !== toInt(m[ordering[i]])) {
2713                unitHasDecimal = true;
2714            }
2715        }
2716    }
2717
2718    return true;
2719}
2720
2721function isValid$1() {
2722    return this._isValid;
2723}
2724
2725function createInvalid$1() {
2726    return createDuration(NaN);
2727}
2728
2729function Duration (duration) {
2730    var normalizedInput = normalizeObjectUnits(duration),
2731        years = normalizedInput.year || 0,
2732        quarters = normalizedInput.quarter || 0,
2733        months = normalizedInput.month || 0,
2734        weeks = normalizedInput.week || 0,
2735        days = normalizedInput.day || 0,
2736        hours = normalizedInput.hour || 0,
2737        minutes = normalizedInput.minute || 0,
2738        seconds = normalizedInput.second || 0,
2739        milliseconds = normalizedInput.millisecond || 0;
2740
2741    this._isValid = isDurationValid(normalizedInput);
2742
2743    // representation for dateAddRemove
2744    this._milliseconds = +milliseconds +
2745        seconds * 1e3 + // 1000
2746        minutes * 6e4 + // 1000 * 60
2747        hours * 1000 * 60 * 60; //using 1000 * 60 * 60 instead of 36e5 to avoid floating point rounding errors https://github.com/moment/moment/issues/2978
2748    // Because of dateAddRemove treats 24 hours as different from a
2749    // day when working around DST, we need to store them separately
2750    this._days = +days +
2751        weeks * 7;
2752    // It is impossible to translate months into days without knowing
2753    // which months you are are talking about, so we have to store
2754    // it separately.
2755    this._months = +months +
2756        quarters * 3 +
2757        years * 12;
2758
2759    this._data = {};
2760
2761    this._locale = getLocale();
2762
2763    this._bubble();
2764}
2765
2766function isDuration (obj) {
2767    return obj instanceof Duration;
2768}
2769
2770function absRound (number) {
2771    if (number < 0) {
2772        return Math.round(-1 * number) * -1;
2773    } else {
2774        return Math.round(number);
2775    }
2776}
2777
2778// FORMATTING
2779
2780function offset (token, separator) {
2781    addFormatToken(token, 0, 0, function () {
2782        var offset = this.utcOffset();
2783        var sign = '+';
2784        if (offset < 0) {
2785            offset = -offset;
2786            sign = '-';
2787        }
2788        return sign + zeroFill(~~(offset / 60), 2) + separator + zeroFill(~~(offset) % 60, 2);
2789    });
2790}
2791
2792offset('Z', ':');
2793offset('ZZ', '');
2794
2795// PARSING
2796
2797addRegexToken('Z',  matchShortOffset);
2798addRegexToken('ZZ', matchShortOffset);
2799addParseToken(['Z', 'ZZ'], function (input, array, config) {
2800    config._useUTC = true;
2801    config._tzm = offsetFromString(matchShortOffset, input);
2802});
2803
2804// HELPERS
2805
2806// timezone chunker
2807// '+10:00' > ['10',  '00']
2808// '-1530'  > ['-15', '30']
2809var chunkOffset = /([\+\-]|\d\d)/gi;
2810
2811function offsetFromString(matcher, string) {
2812    var matches = (string || '').match(matcher);
2813
2814    if (matches === null) {
2815        return null;
2816    }
2817
2818    var chunk   = matches[matches.length - 1] || [];
2819    var parts   = (chunk + '').match(chunkOffset) || ['-', 0, 0];
2820    var minutes = +(parts[1] * 60) + toInt(parts[2]);
2821
2822    return minutes === 0 ?
2823      0 :
2824      parts[0] === '+' ? minutes : -minutes;
2825}
2826
2827// Return a moment from input, that is local/utc/zone equivalent to model.
2828function cloneWithOffset(input, model) {
2829    var res, diff;
2830    if (model._isUTC) {
2831        res = model.clone();
2832        diff = (isMoment(input) || isDate(input) ? input.valueOf() : createLocal(input).valueOf()) - res.valueOf();
2833        // Use low-level api, because this fn is low-level api.
2834        res._d.setTime(res._d.valueOf() + diff);
2835        hooks.updateOffset(res, false);
2836        return res;
2837    } else {
2838        return createLocal(input).local();
2839    }
2840}
2841
2842function getDateOffset (m) {
2843    // On Firefox.24 Date#getTimezoneOffset returns a floating point.
2844    // https://github.com/moment/moment/pull/1871
2845    return -Math.round(m._d.getTimezoneOffset() / 15) * 15;
2846}
2847
2848// HOOKS
2849
2850// This function will be called whenever a moment is mutated.
2851// It is intended to keep the offset in sync with the timezone.
2852hooks.updateOffset = function () {};
2853
2854// MOMENTS
2855
2856// keepLocalTime = true means only change the timezone, without
2857// affecting the local hour. So 5:31:26 +0300 --[utcOffset(2, true)]-->
2858// 5:31:26 +0200 It is possible that 5:31:26 doesn't exist with offset
2859// +0200, so we adjust the time as needed, to be valid.
2860//
2861// Keeping the time actually adds/subtracts (one hour)
2862// from the actual represented time. That is why we call updateOffset
2863// a second time. In case it wants us to change the offset again
2864// _changeInProgress == true case, then we have to adjust, because
2865// there is no such time in the given timezone.
2866function getSetOffset (input, keepLocalTime, keepMinutes) {
2867    var offset = this._offset || 0,
2868        localAdjust;
2869    if (!this.isValid()) {
2870        return input != null ? this : NaN;
2871    }
2872    if (input != null) {
2873        if (typeof input === 'string') {
2874            input = offsetFromString(matchShortOffset, input);
2875            if (input === null) {
2876                return this;
2877            }
2878        } else if (Math.abs(input) < 16 && !keepMinutes) {
2879            input = input * 60;
2880        }
2881        if (!this._isUTC && keepLocalTime) {
2882            localAdjust = getDateOffset(this);
2883        }
2884        this._offset = input;
2885        this._isUTC = true;
2886        if (localAdjust != null) {
2887            this.add(localAdjust, 'm');
2888        }
2889        if (offset !== input) {
2890            if (!keepLocalTime || this._changeInProgress) {
2891                addSubtract(this, createDuration(input - offset, 'm'), 1, false);
2892            } else if (!this._changeInProgress) {
2893                this._changeInProgress = true;
2894                hooks.updateOffset(this, true);
2895                this._changeInProgress = null;
2896            }
2897        }
2898        return this;
2899    } else {
2900        return this._isUTC ? offset : getDateOffset(this);
2901    }
2902}
2903
2904function getSetZone (input, keepLocalTime) {
2905    if (input != null) {
2906        if (typeof input !== 'string') {
2907            input = -input;
2908        }
2909
2910        this.utcOffset(input, keepLocalTime);
2911
2912        return this;
2913    } else {
2914        return -this.utcOffset();
2915    }
2916}
2917
2918function setOffsetToUTC (keepLocalTime) {
2919    return this.utcOffset(0, keepLocalTime);
2920}
2921
2922function setOffsetToLocal (keepLocalTime) {
2923    if (this._isUTC) {
2924        this.utcOffset(0, keepLocalTime);
2925        this._isUTC = false;
2926
2927        if (keepLocalTime) {
2928            this.subtract(getDateOffset(this), 'm');
2929        }
2930    }
2931    return this;
2932}
2933
2934function setOffsetToParsedOffset () {
2935    if (this._tzm != null) {
2936        this.utcOffset(this._tzm, false, true);
2937    } else if (typeof this._i === 'string') {
2938        var tZone = offsetFromString(matchOffset, this._i);
2939        if (tZone != null) {
2940            this.utcOffset(tZone);
2941        }
2942        else {
2943            this.utcOffset(0, true);
2944        }
2945    }
2946    return this;
2947}
2948
2949function hasAlignedHourOffset (input) {
2950    if (!this.isValid()) {
2951        return false;
2952    }
2953    input = input ? createLocal(input).utcOffset() : 0;
2954
2955    return (this.utcOffset() - input) % 60 === 0;
2956}
2957
2958function isDaylightSavingTime () {
2959    return (
2960        this.utcOffset() > this.clone().month(0).utcOffset() ||
2961        this.utcOffset() > this.clone().month(5).utcOffset()
2962    );
2963}
2964
2965function isDaylightSavingTimeShifted () {
2966    if (!isUndefined(this._isDSTShifted)) {
2967        return this._isDSTShifted;
2968    }
2969
2970    var c = {};
2971
2972    copyConfig(c, this);
2973    c = prepareConfig(c);
2974
2975    if (c._a) {
2976        var other = c._isUTC ? createUTC(c._a) : createLocal(c._a);
2977        this._isDSTShifted = this.isValid() &&
2978            compareArrays(c._a, other.toArray()) > 0;
2979    } else {
2980        this._isDSTShifted = false;
2981    }
2982
2983    return this._isDSTShifted;
2984}
2985
2986function isLocal () {
2987    return this.isValid() ? !this._isUTC : false;
2988}
2989
2990function isUtcOffset () {
2991    return this.isValid() ? this._isUTC : false;
2992}
2993
2994function isUtc () {
2995    return this.isValid() ? this._isUTC && this._offset === 0 : false;
2996}
2997
2998// ASP.NET json date format regex
2999var aspNetRegex = /^(\-|\+)?(?:(\d*)[. ])?(\d+)\:(\d+)(?:\:(\d+)(\.\d*)?)?$/;
3000
3001// from http://docs.closure-library.googlecode.com/git/closure_goog_date_date.js.source.html
3002// somewhat more in line with 4.4.3.2 2004 spec, but allows decimal anywhere
3003// and further modified to allow for strings containing both week and day
3004var isoRegex = /^(-|\+)?P(?:([-+]?[0-9,.]*)Y)?(?:([-+]?[0-9,.]*)M)?(?:([-+]?[0-9,.]*)W)?(?:([-+]?[0-9,.]*)D)?(?:T(?:([-+]?[0-9,.]*)H)?(?:([-+]?[0-9,.]*)M)?(?:([-+]?[0-9,.]*)S)?)?$/;
3005
3006function createDuration (input, key) {
3007    var duration = input,
3008        // matching against regexp is expensive, do it on demand
3009        match = null,
3010        sign,
3011        ret,
3012        diffRes;
3013
3014    if (isDuration(input)) {
3015        duration = {
3016            ms : input._milliseconds,
3017            d  : input._days,
3018            M  : input._months
3019        };
3020    } else if (isNumber(input)) {
3021        duration = {};
3022        if (key) {
3023            duration[key] = input;
3024        } else {
3025            duration.milliseconds = input;
3026        }
3027    } else if (!!(match = aspNetRegex.exec(input))) {
3028        sign = (match[1] === '-') ? -1 : 1;
3029        duration = {
3030            y  : 0,
3031            d  : toInt(match[DATE])                         * sign,
3032            h  : toInt(match[HOUR])                         * sign,
3033            m  : toInt(match[MINUTE])                       * sign,
3034            s  : toInt(match[SECOND])                       * sign,
3035            ms : toInt(absRound(match[MILLISECOND] * 1000)) * sign // the millisecond decimal point is included in the match
3036        };
3037    } else if (!!(match = isoRegex.exec(input))) {
3038        sign = (match[1] === '-') ? -1 : (match[1] === '+') ? 1 : 1;
3039        duration = {
3040            y : parseIso(match[2], sign),
3041            M : parseIso(match[3], sign),
3042            w : parseIso(match[4], sign),
3043            d : parseIso(match[5], sign),
3044            h : parseIso(match[6], sign),
3045            m : parseIso(match[7], sign),
3046            s : parseIso(match[8], sign)
3047        };
3048    } else if (duration == null) {// checks for null or undefined
3049        duration = {};
3050    } else if (typeof duration === 'object' && ('from' in duration || 'to' in duration)) {
3051        diffRes = momentsDifference(createLocal(duration.from), createLocal(duration.to));
3052
3053        duration = {};
3054        duration.ms = diffRes.milliseconds;
3055        duration.M = diffRes.months;
3056    }
3057
3058    ret = new Duration(duration);
3059
3060    if (isDuration(input) && hasOwnProp(input, '_locale')) {
3061        ret._locale = input._locale;
3062    }
3063
3064    return ret;
3065}
3066
3067createDuration.fn = Duration.prototype;
3068createDuration.invalid = createInvalid$1;
3069
3070function parseIso (inp, sign) {
3071    // We'd normally use ~~inp for this, but unfortunately it also
3072    // converts floats to ints.
3073    // inp may be undefined, so careful calling replace on it.
3074    var res = inp && parseFloat(inp.replace(',', '.'));
3075    // apply sign while we're at it
3076    return (isNaN(res) ? 0 : res) * sign;
3077}
3078
3079function positiveMomentsDifference(base, other) {
3080    var res = {milliseconds: 0, months: 0};
3081
3082    res.months = other.month() - base.month() +
3083        (other.year() - base.year()) * 12;
3084    if (base.clone().add(res.months, 'M').isAfter(other)) {
3085        --res.months;
3086    }
3087
3088    res.milliseconds = +other - +(base.clone().add(res.months, 'M'));
3089
3090    return res;
3091}
3092
3093function momentsDifference(base, other) {
3094    var res;
3095    if (!(base.isValid() && other.isValid())) {
3096        return {milliseconds: 0, months: 0};
3097    }
3098
3099    other = cloneWithOffset(other, base);
3100    if (base.isBefore(other)) {
3101        res = positiveMomentsDifference(base, other);
3102    } else {
3103        res = positiveMomentsDifference(other, base);
3104        res.milliseconds = -res.milliseconds;
3105        res.months = -res.months;
3106    }
3107
3108    return res;
3109}
3110
3111// TODO: remove 'name' arg after deprecation is removed
3112function createAdder(direction, name) {
3113    return function (val, period) {
3114        var dur, tmp;
3115        //invert the arguments, but complain about it
3116        if (period !== null && !isNaN(+period)) {
3117            deprecateSimple(name, 'moment().' + name  + '(period, number) is deprecated. Please use moment().' + name + '(number, period). ' +
3118            'See http://momentjs.com/guides/#/warnings/add-inverted-param/ for more info.');
3119            tmp = val; val = period; period = tmp;
3120        }
3121
3122        val = typeof val === 'string' ? +val : val;
3123        dur = createDuration(val, period);
3124        addSubtract(this, dur, direction);
3125        return this;
3126    };
3127}
3128
3129function addSubtract (mom, duration, isAdding, updateOffset) {
3130    var milliseconds = duration._milliseconds,
3131        days = absRound(duration._days),
3132        months = absRound(duration._months);
3133
3134    if (!mom.isValid()) {
3135        // No op
3136        return;
3137    }
3138
3139    updateOffset = updateOffset == null ? true : updateOffset;
3140
3141    if (months) {
3142        setMonth(mom, get(mom, 'Month') + months * isAdding);
3143    }
3144    if (days) {
3145        set$1(mom, 'Date', get(mom, 'Date') + days * isAdding);
3146    }
3147    if (milliseconds) {
3148        mom._d.setTime(mom._d.valueOf() + milliseconds * isAdding);
3149    }
3150    if (updateOffset) {
3151        hooks.updateOffset(mom, days || months);
3152    }
3153}
3154
3155var add      = createAdder(1, 'add');
3156var subtract = createAdder(-1, 'subtract');
3157
3158function getCalendarFormat(myMoment, now) {
3159    var diff = myMoment.diff(now, 'days', true);
3160    return diff < -6 ? 'sameElse' :
3161            diff < -1 ? 'lastWeek' :
3162            diff < 0 ? 'lastDay' :
3163            diff < 1 ? 'sameDay' :
3164            diff < 2 ? 'nextDay' :
3165            diff < 7 ? 'nextWeek' : 'sameElse';
3166}
3167
3168function calendar$1 (time, formats) {
3169    // We want to compare the start of today, vs this.
3170    // Getting start-of-today depends on whether we're local/utc/offset or not.
3171    var now = time || createLocal(),
3172        sod = cloneWithOffset(now, this).startOf('day'),
3173        format = hooks.calendarFormat(this, sod) || 'sameElse';
3174
3175    var output = formats && (isFunction(formats[format]) ? formats[format].call(this, now) : formats[format]);
3176
3177    return this.format(output || this.localeData().calendar(format, this, createLocal(now)));
3178}
3179
3180function clone () {
3181    return new Moment(this);
3182}
3183
3184function isAfter (input, units) {
3185    var localInput = isMoment(input) ? input : createLocal(input);
3186    if (!(this.isValid() && localInput.isValid())) {
3187        return false;
3188    }
3189    units = normalizeUnits(!isUndefined(units) ? units : 'millisecond');
3190    if (units === 'millisecond') {
3191        return this.valueOf() > localInput.valueOf();
3192    } else {
3193        return localInput.valueOf() < this.clone().startOf(units).valueOf();
3194    }
3195}
3196
3197function isBefore (input, units) {
3198    var localInput = isMoment(input) ? input : createLocal(input);
3199    if (!(this.isValid() && localInput.isValid())) {
3200        return false;
3201    }
3202    units = normalizeUnits(!isUndefined(units) ? units : 'millisecond');
3203    if (units === 'millisecond') {
3204        return this.valueOf() < localInput.valueOf();
3205    } else {
3206        return this.clone().endOf(units).valueOf() < localInput.valueOf();
3207    }
3208}
3209
3210function isBetween (from, to, units, inclusivity) {
3211    inclusivity = inclusivity || '()';
3212    return (inclusivity[0] === '(' ? this.isAfter(from, units) : !this.isBefore(from, units)) &&
3213        (inclusivity[1] === ')' ? this.isBefore(to, units) : !this.isAfter(to, units));
3214}
3215
3216function isSame (input, units) {
3217    var localInput = isMoment(input) ? input : createLocal(input),
3218        inputMs;
3219    if (!(this.isValid() && localInput.isValid())) {
3220        return false;
3221    }
3222    units = normalizeUnits(units || 'millisecond');
3223    if (units === 'millisecond') {
3224        return this.valueOf() === localInput.valueOf();
3225    } else {
3226        inputMs = localInput.valueOf();
3227        return this.clone().startOf(units).valueOf() <= inputMs && inputMs <= this.clone().endOf(units).valueOf();
3228    }
3229}
3230
3231function isSameOrAfter (input, units) {
3232    return this.isSame(input, units) || this.isAfter(input,units);
3233}
3234
3235function isSameOrBefore (input, units) {
3236    return this.isSame(input, units) || this.isBefore(input,units);
3237}
3238
3239function diff (input, units, asFloat) {
3240    var that,
3241        zoneDelta,
3242        delta, output;
3243
3244    if (!this.isValid()) {
3245        return NaN;
3246    }
3247
3248    that = cloneWithOffset(input, this);
3249
3250    if (!that.isValid()) {
3251        return NaN;
3252    }
3253
3254    zoneDelta = (that.utcOffset() - this.utcOffset()) * 6e4;
3255
3256    units = normalizeUnits(units);
3257
3258    switch (units) {
3259        case 'year': output = monthDiff(this, that) / 12; break;
3260        case 'month': output = monthDiff(this, that); break;
3261        case 'quarter': output = monthDiff(this, that) / 3; break;
3262        case 'second': output = (this - that) / 1e3; break; // 1000
3263        case 'minute': output = (this - that) / 6e4; break; // 1000 * 60
3264        case 'hour': output = (this - that) / 36e5; break; // 1000 * 60 * 60
3265        case 'day': output = (this - that - zoneDelta) / 864e5; break; // 1000 * 60 * 60 * 24, negate dst
3266        case 'week': output = (this - that - zoneDelta) / 6048e5; break; // 1000 * 60 * 60 * 24 * 7, negate dst
3267        default: output = this - that;
3268    }
3269
3270    return asFloat ? output : absFloor(output);
3271}
3272
3273function monthDiff (a, b) {
3274    // difference in months
3275    var wholeMonthDiff = ((b.year() - a.year()) * 12) + (b.month() - a.month()),
3276        // b is in (anchor - 1 month, anchor + 1 month)
3277        anchor = a.clone().add(wholeMonthDiff, 'months'),
3278        anchor2, adjust;
3279
3280    if (b - anchor < 0) {
3281        anchor2 = a.clone().add(wholeMonthDiff - 1, 'months');
3282        // linear across the month
3283        adjust = (b - anchor) / (anchor - anchor2);
3284    } else {
3285        anchor2 = a.clone().add(wholeMonthDiff + 1, 'months');
3286        // linear across the month
3287        adjust = (b - anchor) / (anchor2 - anchor);
3288    }
3289
3290    //check for negative zero, return zero if negative zero
3291    return -(wholeMonthDiff + adjust) || 0;
3292}
3293
3294hooks.defaultFormat = 'YYYY-MM-DDTHH:mm:ssZ';
3295hooks.defaultFormatUtc = 'YYYY-MM-DDTHH:mm:ss[Z]';
3296
3297function toString () {
3298    return this.clone().locale('en').format('ddd MMM DD YYYY HH:mm:ss [GMT]ZZ');
3299}
3300
3301function toISOString() {
3302    if (!this.isValid()) {
3303        return null;
3304    }
3305    var m = this.clone().utc();
3306    if (m.year() < 0 || m.year() > 9999) {
3307        return formatMoment(m, 'YYYYYY-MM-DD[T]HH:mm:ss.SSS[Z]');
3308    }
3309    if (isFunction(Date.prototype.toISOString)) {
3310        // native implementation is ~50x faster, use it when we can
3311        return this.toDate().toISOString();
3312    }
3313    return formatMoment(m, 'YYYY-MM-DD[T]HH:mm:ss.SSS[Z]');
3314}
3315
3316/**
3317 * Return a human readable representation of a moment that can
3318 * also be evaluated to get a new moment which is the same
3319 *
3320 * @link https://nodejs.org/dist/latest/docs/api/util.html#util_custom_inspect_function_on_objects
3321 */
3322function inspect () {
3323    if (!this.isValid()) {
3324        return 'moment.invalid(/* ' + this._i + ' */)';
3325    }
3326    var func = 'moment';
3327    var zone = '';
3328    if (!this.isLocal()) {
3329        func = this.utcOffset() === 0 ? 'moment.utc' : 'moment.parseZone';
3330        zone = 'Z';
3331    }
3332    var prefix = '[' + func + '("]';
3333    var year = (0 <= this.year() && this.year() <= 9999) ? 'YYYY' : 'YYYYYY';
3334    var datetime = '-MM-DD[T]HH:mm:ss.SSS';
3335    var suffix = zone + '[")]';
3336
3337    return this.format(prefix + year + datetime + suffix);
3338}
3339
3340function format (inputString) {
3341    if (!inputString) {
3342        inputString = this.isUtc() ? hooks.defaultFormatUtc : hooks.defaultFormat;
3343    }
3344    var output = formatMoment(this, inputString);
3345    return this.localeData().postformat(output);
3346}
3347
3348function from (time, withoutSuffix) {
3349    if (this.isValid() &&
3350            ((isMoment(time) && time.isValid()) ||
3351             createLocal(time).isValid())) {
3352        return createDuration({to: this, from: time}).locale(this.locale()).humanize(!withoutSuffix);
3353    } else {
3354        return this.localeData().invalidDate();
3355    }
3356}
3357
3358function fromNow (withoutSuffix) {
3359    return this.from(createLocal(), withoutSuffix);
3360}
3361
3362function to (time, withoutSuffix) {
3363    if (this.isValid() &&
3364            ((isMoment(time) && time.isValid()) ||
3365             createLocal(time).isValid())) {
3366        return createDuration({from: this, to: time}).locale(this.locale()).humanize(!withoutSuffix);
3367    } else {
3368        return this.localeData().invalidDate();
3369    }
3370}
3371
3372function toNow (withoutSuffix) {
3373    return this.to(createLocal(), withoutSuffix);
3374}
3375
3376// If passed a locale key, it will set the locale for this
3377// instance.  Otherwise, it will return the locale configuration
3378// variables for this instance.
3379function locale (key) {
3380    var newLocaleData;
3381
3382    if (key === undefined) {
3383        return this._locale._abbr;
3384    } else {
3385        newLocaleData = getLocale(key);
3386        if (newLocaleData != null) {
3387            this._locale = newLocaleData;
3388        }
3389        return this;
3390    }
3391}
3392
3393var lang = deprecate(
3394    'moment().lang() is deprecated. Instead, use moment().localeData() to get the language configuration. Use moment().locale() to change languages.',
3395    function (key) {
3396        if (key === undefined) {
3397            return this.localeData();
3398        } else {
3399            return this.locale(key);
3400        }
3401    }
3402);
3403
3404function localeData () {
3405    return this._locale;
3406}
3407
3408function startOf (units) {
3409    units = normalizeUnits(units);
3410    // the following switch intentionally omits break keywords
3411    // to utilize falling through the cases.
3412    switch (units) {
3413        case 'year':
3414            this.month(0);
3415            /* falls through */
3416        case 'quarter':
3417        case 'month':
3418            this.date(1);
3419            /* falls through */
3420        case 'week':
3421        case 'isoWeek':
3422        case 'day':
3423        case 'date':
3424            this.hours(0);
3425            /* falls through */
3426        case 'hour':
3427            this.minutes(0);
3428            /* falls through */
3429        case 'minute':
3430            this.seconds(0);
3431            /* falls through */
3432        case 'second':
3433            this.milliseconds(0);
3434    }
3435
3436    // weeks are a special case
3437    if (units === 'week') {
3438        this.weekday(0);
3439    }
3440    if (units === 'isoWeek') {
3441        this.isoWeekday(1);
3442    }
3443
3444    // quarters are also special
3445    if (units === 'quarter') {
3446        this.month(Math.floor(this.month() / 3) * 3);
3447    }
3448
3449    return this;
3450}
3451
3452function endOf (units) {
3453    units = normalizeUnits(units);
3454    if (units === undefined || units === 'millisecond') {
3455        return this;
3456    }
3457
3458    // 'date' is an alias for 'day', so it should be considered as such.
3459    if (units === 'date') {
3460        units = 'day';
3461    }
3462
3463    return this.startOf(units).add(1, (units === 'isoWeek' ? 'week' : units)).subtract(1, 'ms');
3464}
3465
3466function valueOf () {
3467    return this._d.valueOf() - ((this._offset || 0) * 60000);
3468}
3469
3470function unix () {
3471    return Math.floor(this.valueOf() / 1000);
3472}
3473
3474function toDate () {
3475    return new Date(this.valueOf());
3476}
3477
3478function toArray () {
3479    var m = this;
3480    return [m.year(), m.month(), m.date(), m.hour(), m.minute(), m.second(), m.millisecond()];
3481}
3482
3483function toObject () {
3484    var m = this;
3485    return {
3486        years: m.year(),
3487        months: m.month(),
3488        date: m.date(),
3489        hours: m.hours(),
3490        minutes: m.minutes(),
3491        seconds: m.seconds(),
3492        milliseconds: m.milliseconds()
3493    };
3494}
3495
3496function toJSON () {
3497    // new Date(NaN).toJSON() === null
3498    return this.isValid() ? this.toISOString() : null;
3499}
3500
3501function isValid$2 () {
3502    return isValid(this);
3503}
3504
3505function parsingFlags () {
3506    return extend({}, getParsingFlags(this));
3507}
3508
3509function invalidAt () {
3510    return getParsingFlags(this).overflow;
3511}
3512
3513function creationData() {
3514    return {
3515        input: this._i,
3516        format: this._f,
3517        locale: this._locale,
3518        isUTC: this._isUTC,
3519        strict: this._strict
3520    };
3521}
3522
3523// FORMATTING
3524
3525addFormatToken(0, ['gg', 2], 0, function () {
3526    return this.weekYear() % 100;
3527});
3528
3529addFormatToken(0, ['GG', 2], 0, function () {
3530    return this.isoWeekYear() % 100;
3531});
3532
3533function addWeekYearFormatToken (token, getter) {
3534    addFormatToken(0, [token, token.length], 0, getter);
3535}
3536
3537addWeekYearFormatToken('gggg',     'weekYear');
3538addWeekYearFormatToken('ggggg',    'weekYear');
3539addWeekYearFormatToken('GGGG',  'isoWeekYear');
3540addWeekYearFormatToken('GGGGG', 'isoWeekYear');
3541
3542// ALIASES
3543
3544addUnitAlias('weekYear', 'gg');
3545addUnitAlias('isoWeekYear', 'GG');
3546
3547// PRIORITY
3548
3549addUnitPriority('weekYear', 1);
3550addUnitPriority('isoWeekYear', 1);
3551
3552
3553// PARSING
3554
3555addRegexToken('G',      matchSigned);
3556addRegexToken('g',      matchSigned);
3557addRegexToken('GG',     match1to2, match2);
3558addRegexToken('gg',     match1to2, match2);
3559addRegexToken('GGGG',   match1to4, match4);
3560addRegexToken('gggg',   match1to4, match4);
3561addRegexToken('GGGGG',  match1to6, match6);
3562addRegexToken('ggggg',  match1to6, match6);
3563
3564addWeekParseToken(['gggg', 'ggggg', 'GGGG', 'GGGGG'], function (input, week, config, token) {
3565    week[token.substr(0, 2)] = toInt(input);
3566});
3567
3568addWeekParseToken(['gg', 'GG'], function (input, week, config, token) {
3569    week[token] = hooks.parseTwoDigitYear(input);
3570});
3571
3572// MOMENTS
3573
3574function getSetWeekYear (input) {
3575    return getSetWeekYearHelper.call(this,
3576            input,
3577            this.week(),
3578            this.weekday(),
3579            this.localeData()._week.dow,
3580            this.localeData()._week.doy);
3581}
3582
3583function getSetISOWeekYear (input) {
3584    return getSetWeekYearHelper.call(this,
3585            input, this.isoWeek(), this.isoWeekday(), 1, 4);
3586}
3587
3588function getISOWeeksInYear () {
3589    return weeksInYear(this.year(), 1, 4);
3590}
3591
3592function getWeeksInYear () {
3593    var weekInfo = this.localeData()._week;
3594    return weeksInYear(this.year(), weekInfo.dow, weekInfo.doy);
3595}
3596
3597function getSetWeekYearHelper(input, week, weekday, dow, doy) {
3598    var weeksTarget;
3599    if (input == null) {
3600        return weekOfYear(this, dow, doy).year;
3601    } else {
3602        weeksTarget = weeksInYear(input, dow, doy);
3603        if (week > weeksTarget) {
3604            week = weeksTarget;
3605        }
3606        return setWeekAll.call(this, input, week, weekday, dow, doy);
3607    }
3608}
3609
3610function setWeekAll(weekYear, week, weekday, dow, doy) {
3611    var dayOfYearData = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy),
3612        date = createUTCDate(dayOfYearData.year, 0, dayOfYearData.dayOfYear);
3613
3614    this.year(date.getUTCFullYear());
3615    this.month(date.getUTCMonth());
3616    this.date(date.getUTCDate());
3617    return this;
3618}
3619
3620// FORMATTING
3621
3622addFormatToken('Q', 0, 'Qo', 'quarter');
3623
3624// ALIASES
3625
3626addUnitAlias('quarter', 'Q');
3627
3628// PRIORITY
3629
3630addUnitPriority('quarter', 7);
3631
3632// PARSING
3633
3634addRegexToken('Q', match1);
3635addParseToken('Q', function (input, array) {
3636    array[MONTH] = (toInt(input) - 1) * 3;
3637});
3638
3639// MOMENTS
3640
3641function getSetQuarter (input) {
3642    return input == null ? Math.ceil((this.month() + 1) / 3) : this.month((input - 1) * 3 + this.month() % 3);
3643}
3644
3645// FORMATTING
3646
3647addFormatToken('D', ['DD', 2], 'Do', 'date');
3648
3649// ALIASES
3650
3651addUnitAlias('date', 'D');
3652
3653// PRIOROITY
3654addUnitPriority('date', 9);
3655
3656// PARSING
3657
3658addRegexToken('D',  match1to2);
3659addRegexToken('DD', match1to2, match2);
3660addRegexToken('Do', function (isStrict, locale) {
3661    // TODO: Remove "ordinalParse" fallback in next major release.
3662    return isStrict ?
3663      (locale._dayOfMonthOrdinalParse || locale._ordinalParse) :
3664      locale._dayOfMonthOrdinalParseLenient;
3665});
3666
3667addParseToken(['D', 'DD'], DATE);
3668addParseToken('Do', function (input, array) {
3669    array[DATE] = toInt(input.match(match1to2)[0], 10);
3670});
3671
3672// MOMENTS
3673
3674var getSetDayOfMonth = makeGetSet('Date', true);
3675
3676// FORMATTING
3677
3678addFormatToken('DDD', ['DDDD', 3], 'DDDo', 'dayOfYear');
3679
3680// ALIASES
3681
3682addUnitAlias('dayOfYear', 'DDD');
3683
3684// PRIORITY
3685addUnitPriority('dayOfYear', 4);
3686
3687// PARSING
3688
3689addRegexToken('DDD',  match1to3);
3690addRegexToken('DDDD', match3);
3691addParseToken(['DDD', 'DDDD'], function (input, array, config) {
3692    config._dayOfYear = toInt(input);
3693});
3694
3695// HELPERS
3696
3697// MOMENTS
3698
3699function getSetDayOfYear (input) {
3700    var dayOfYear = Math.round((this.clone().startOf('day') - this.clone().startOf('year')) / 864e5) + 1;
3701    return input == null ? dayOfYear : this.add((input - dayOfYear), 'd');
3702}
3703
3704// FORMATTING
3705
3706addFormatToken('m', ['mm', 2], 0, 'minute');
3707
3708// ALIASES
3709
3710addUnitAlias('minute', 'm');
3711
3712// PRIORITY
3713
3714addUnitPriority('minute', 14);
3715
3716// PARSING
3717
3718addRegexToken('m',  match1to2);
3719addRegexToken('mm', match1to2, match2);
3720addParseToken(['m', 'mm'], MINUTE);
3721
3722// MOMENTS
3723
3724var getSetMinute = makeGetSet('Minutes', false);
3725
3726// FORMATTING
3727
3728addFormatToken('s', ['ss', 2], 0, 'second');
3729
3730// ALIASES
3731
3732addUnitAlias('second', 's');
3733
3734// PRIORITY
3735
3736addUnitPriority('second', 15);
3737
3738// PARSING
3739
3740addRegexToken('s',  match1to2);
3741addRegexToken('ss', match1to2, match2);
3742addParseToken(['s', 'ss'], SECOND);
3743
3744// MOMENTS
3745
3746var getSetSecond = makeGetSet('Seconds', false);
3747
3748// FORMATTING
3749
3750addFormatToken('S', 0, 0, function () {
3751    return ~~(this.millisecond() / 100);
3752});
3753
3754addFormatToken(0, ['SS', 2], 0, function () {
3755    return ~~(this.millisecond() / 10);
3756});
3757
3758addFormatToken(0, ['SSS', 3], 0, 'millisecond');
3759addFormatToken(0, ['SSSS', 4], 0, function () {
3760    return this.millisecond() * 10;
3761});
3762addFormatToken(0, ['SSSSS', 5], 0, function () {
3763    return this.millisecond() * 100;
3764});
3765addFormatToken(0, ['SSSSSS', 6], 0, function () {
3766    return this.millisecond() * 1000;
3767});
3768addFormatToken(0, ['SSSSSSS', 7], 0, function () {
3769    return this.millisecond() * 10000;
3770});
3771addFormatToken(0, ['SSSSSSSS', 8], 0, function () {
3772    return this.millisecond() * 100000;
3773});
3774addFormatToken(0, ['SSSSSSSSS', 9], 0, function () {
3775    return this.millisecond() * 1000000;
3776});
3777
3778
3779// ALIASES
3780
3781addUnitAlias('millisecond', 'ms');
3782
3783// PRIORITY
3784
3785addUnitPriority('millisecond', 16);
3786
3787// PARSING
3788
3789addRegexToken('S',    match1to3, match1);
3790addRegexToken('SS',   match1to3, match2);
3791addRegexToken('SSS',  match1to3, match3);
3792
3793var token;
3794for (token = 'SSSS'; token.length <= 9; token += 'S') {
3795    addRegexToken(token, matchUnsigned);
3796}
3797
3798function parseMs(input, array) {
3799    array[MILLISECOND] = toInt(('0.' + input) * 1000);
3800}
3801
3802for (token = 'S'; token.length <= 9; token += 'S') {
3803    addParseToken(token, parseMs);
3804}
3805// MOMENTS
3806
3807var getSetMillisecond = makeGetSet('Milliseconds', false);
3808
3809// FORMATTING
3810
3811addFormatToken('z',  0, 0, 'zoneAbbr');
3812addFormatToken('zz', 0, 0, 'zoneName');
3813
3814// MOMENTS
3815
3816function getZoneAbbr () {
3817    return this._isUTC ? 'UTC' : '';
3818}
3819
3820function getZoneName () {
3821    return this._isUTC ? 'Coordinated Universal Time' : '';
3822}
3823
3824var proto = Moment.prototype;
3825
3826proto.add               = add;
3827proto.calendar          = calendar$1;
3828proto.clone             = clone;
3829proto.diff              = diff;
3830proto.endOf             = endOf;
3831proto.format            = format;
3832proto.from              = from;
3833proto.fromNow           = fromNow;
3834proto.to                = to;
3835proto.toNow             = toNow;
3836proto.get               = stringGet;
3837proto.invalidAt         = invalidAt;
3838proto.isAfter           = isAfter;
3839proto.isBefore          = isBefore;
3840proto.isBetween         = isBetween;
3841proto.isSame            = isSame;
3842proto.isSameOrAfter     = isSameOrAfter;
3843proto.isSameOrBefore    = isSameOrBefore;
3844proto.isValid           = isValid$2;
3845proto.lang              = lang;
3846proto.locale            = locale;
3847proto.localeData        = localeData;
3848proto.max               = prototypeMax;
3849proto.min               = prototypeMin;
3850proto.parsingFlags      = parsingFlags;
3851proto.set               = stringSet;
3852proto.startOf           = startOf;
3853proto.subtract          = subtract;
3854proto.toArray           = toArray;
3855proto.toObject          = toObject;
3856proto.toDate            = toDate;
3857proto.toISOString       = toISOString;
3858proto.inspect           = inspect;
3859proto.toJSON            = toJSON;
3860proto.toString          = toString;
3861proto.unix              = unix;
3862proto.valueOf           = valueOf;
3863proto.creationData      = creationData;
3864
3865// Year
3866proto.year       = getSetYear;
3867proto.isLeapYear = getIsLeapYear;
3868
3869// Week Year
3870proto.weekYear    = getSetWeekYear;
3871proto.isoWeekYear = getSetISOWeekYear;
3872
3873// Quarter
3874proto.quarter = proto.quarters = getSetQuarter;
3875
3876// Month
3877proto.month       = getSetMonth;
3878proto.daysInMonth = getDaysInMonth;
3879
3880// Week
3881proto.week           = proto.weeks        = getSetWeek;
3882proto.isoWeek        = proto.isoWeeks     = getSetISOWeek;
3883proto.weeksInYear    = getWeeksInYear;
3884proto.isoWeeksInYear = getISOWeeksInYear;
3885
3886// Day
3887proto.date       = getSetDayOfMonth;
3888proto.day        = proto.days             = getSetDayOfWeek;
3889proto.weekday    = getSetLocaleDayOfWeek;
3890proto.isoWeekday = getSetISODayOfWeek;
3891proto.dayOfYear  = getSetDayOfYear;
3892
3893// Hour
3894proto.hour = proto.hours = getSetHour;
3895
3896// Minute
3897proto.minute = proto.minutes = getSetMinute;
3898
3899// Second
3900proto.second = proto.seconds = getSetSecond;
3901
3902// Millisecond
3903proto.millisecond = proto.milliseconds = getSetMillisecond;
3904
3905// Offset
3906proto.utcOffset            = getSetOffset;
3907proto.utc                  = setOffsetToUTC;
3908proto.local                = setOffsetToLocal;
3909proto.parseZone            = setOffsetToParsedOffset;
3910proto.hasAlignedHourOffset = hasAlignedHourOffset;
3911proto.isDST                = isDaylightSavingTime;
3912proto.isLocal              = isLocal;
3913proto.isUtcOffset          = isUtcOffset;
3914proto.isUtc                = isUtc;
3915proto.isUTC                = isUtc;
3916
3917// Timezone
3918proto.zoneAbbr = getZoneAbbr;
3919proto.zoneName = getZoneName;
3920
3921// Deprecations
3922proto.dates  = deprecate('dates accessor is deprecated. Use date instead.', getSetDayOfMonth);
3923proto.months = deprecate('months accessor is deprecated. Use month instead', getSetMonth);
3924proto.years  = deprecate('years accessor is deprecated. Use year instead', getSetYear);
3925proto.zone   = deprecate('moment().zone is deprecated, use moment().utcOffset instead. http://momentjs.com/guides/#/warnings/zone/', getSetZone);
3926proto.isDSTShifted = deprecate('isDSTShifted is deprecated. See http://momentjs.com/guides/#/warnings/dst-shifted/ for more information', isDaylightSavingTimeShifted);
3927
3928function createUnix (input) {
3929