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   1  //! moment.js
   2  //! version : 2.27.0
   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  
  13      var hookCallback;
  14  
  15      function 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.
  21      function setHookCallback(callback) {
  22          hookCallback = callback;
  23      }
  24  
  25      function isArray(input) {
  26          return (
  27              input instanceof Array ||
  28              Object.prototype.toString.call(input) === '[object Array]'
  29          );
  30      }
  31  
  32      function isObject(input) {
  33          // IE8 will treat undefined and null as object if it wasn't for
  34          // input != null
  35          return (
  36              input != null &&
  37              Object.prototype.toString.call(input) === '[object Object]'
  38          );
  39      }
  40  
  41      function hasOwnProp(a, b) {
  42          return Object.prototype.hasOwnProperty.call(a, b);
  43      }
  44  
  45      function isObjectEmpty(obj) {
  46          if (Object.getOwnPropertyNames) {
  47              return Object.getOwnPropertyNames(obj).length === 0;
  48          } else {
  49              var k;
  50              for (k in obj) {
  51                  if (hasOwnProp(obj, k)) {
  52                      return false;
  53                  }
  54              }
  55              return true;
  56          }
  57      }
  58  
  59      function isUndefined(input) {
  60          return input === void 0;
  61      }
  62  
  63      function isNumber(input) {
  64          return (
  65              typeof input === 'number' ||
  66              Object.prototype.toString.call(input) === '[object Number]'
  67          );
  68      }
  69  
  70      function isDate(input) {
  71          return (
  72              input instanceof Date ||
  73              Object.prototype.toString.call(input) === '[object Date]'
  74          );
  75      }
  76  
  77      function map(arr, fn) {
  78          var res = [],
  79              i;
  80          for (i = 0; i < arr.length; ++i) {
  81              res.push(fn(arr[i], i));
  82          }
  83          return res;
  84      }
  85  
  86      function extend(a, b) {
  87          for (var i in b) {
  88              if (hasOwnProp(b, i)) {
  89                  a[i] = b[i];
  90              }
  91          }
  92  
  93          if (hasOwnProp(b, 'toString')) {
  94              a.toString = b.toString;
  95          }
  96  
  97          if (hasOwnProp(b, 'valueOf')) {
  98              a.valueOf = b.valueOf;
  99          }
 100  
 101          return a;
 102      }
 103  
 104      function createUTC(input, format, locale, strict) {
 105          return createLocalOrUTC(input, format, locale, strict, true).utc();
 106      }
 107  
 108      function defaultParsingFlags() {
 109          // We need to deep clone this object.
 110          return {
 111              empty: false,
 112              unusedTokens: [],
 113              unusedInput: [],
 114              overflow: -2,
 115              charsLeftOver: 0,
 116              nullInput: false,
 117              invalidEra: null,
 118              invalidMonth: null,
 119              invalidFormat: false,
 120              userInvalidated: false,
 121              iso: false,
 122              parsedDateParts: [],
 123              era: null,
 124              meridiem: null,
 125              rfc2822: false,
 126              weekdayMismatch: false,
 127          };
 128      }
 129  
 130      function getParsingFlags(m) {
 131          if (m._pf == null) {
 132              m._pf = defaultParsingFlags();
 133          }
 134          return m._pf;
 135      }
 136  
 137      var some;
 138      if (Array.prototype.some) {
 139          some = Array.prototype.some;
 140      } else {
 141          some = function (fun) {
 142              var t = Object(this),
 143                  len = t.length >>> 0,
 144                  i;
 145  
 146              for (i = 0; i < len; i++) {
 147                  if (i in t && fun.call(this, t[i], i, t)) {
 148                      return true;
 149                  }
 150              }
 151  
 152              return false;
 153          };
 154      }
 155  
 156      function isValid(m) {
 157          if (m._isValid == null) {
 158              var flags = getParsingFlags(m),
 159                  parsedParts = some.call(flags.parsedDateParts, function (i) {
 160                      return i != null;
 161                  }),
 162                  isNowValid =
 163                      !isNaN(m._d.getTime()) &&
 164                      flags.overflow < 0 &&
 165                      !flags.empty &&
 166                      !flags.invalidEra &&
 167                      !flags.invalidMonth &&
 168                      !flags.invalidWeekday &&
 169                      !flags.weekdayMismatch &&
 170                      !flags.nullInput &&
 171                      !flags.invalidFormat &&
 172                      !flags.userInvalidated &&
 173                      (!flags.meridiem || (flags.meridiem && parsedParts));
 174  
 175              if (m._strict) {
 176                  isNowValid =
 177                      isNowValid &&
 178                      flags.charsLeftOver === 0 &&
 179                      flags.unusedTokens.length === 0 &&
 180                      flags.bigHour === undefined;
 181              }
 182  
 183              if (Object.isFrozen == null || !Object.isFrozen(m)) {
 184                  m._isValid = isNowValid;
 185              } else {
 186                  return isNowValid;
 187              }
 188          }
 189          return m._isValid;
 190      }
 191  
 192      function createInvalid(flags) {
 193          var m = createUTC(NaN);
 194          if (flags != null) {
 195              extend(getParsingFlags(m), flags);
 196          } else {
 197              getParsingFlags(m).userInvalidated = true;
 198          }
 199  
 200          return m;
 201      }
 202  
 203      // Plugins that add properties should also add the key here (null value),
 204      // so we can properly clone ourselves.
 205      var momentProperties = (hooks.momentProperties = []),
 206          updateInProgress = false;
 207  
 208      function copyConfig(to, from) {
 209          var i, prop, val;
 210  
 211          if (!isUndefined(from._isAMomentObject)) {
 212              to._isAMomentObject = from._isAMomentObject;
 213          }
 214          if (!isUndefined(from._i)) {
 215              to._i = from._i;
 216          }
 217          if (!isUndefined(from._f)) {
 218              to._f = from._f;
 219          }
 220          if (!isUndefined(from._l)) {
 221              to._l = from._l;
 222          }
 223          if (!isUndefined(from._strict)) {
 224              to._strict = from._strict;
 225          }
 226          if (!isUndefined(from._tzm)) {
 227              to._tzm = from._tzm;
 228          }
 229          if (!isUndefined(from._isUTC)) {
 230              to._isUTC = from._isUTC;
 231          }
 232          if (!isUndefined(from._offset)) {
 233              to._offset = from._offset;
 234          }
 235          if (!isUndefined(from._pf)) {
 236              to._pf = getParsingFlags(from);
 237          }
 238          if (!isUndefined(from._locale)) {
 239              to._locale = from._locale;
 240          }
 241  
 242          if (momentProperties.length > 0) {
 243              for (i = 0; i < momentProperties.length; i++) {
 244                  prop = momentProperties[i];
 245                  val = from[prop];
 246                  if (!isUndefined(val)) {
 247                      to[prop] = val;
 248                  }
 249              }
 250          }
 251  
 252          return to;
 253      }
 254  
 255      // Moment prototype object
 256      function Moment(config) {
 257          copyConfig(this, config);
 258          this._d = new Date(config._d != null ? config._d.getTime() : NaN);
 259          if (!this.isValid()) {
 260              this._d = new Date(NaN);
 261          }
 262          // Prevent infinite loop in case updateOffset creates new moment
 263          // objects.
 264          if (updateInProgress === false) {
 265              updateInProgress = true;
 266              hooks.updateOffset(this);
 267              updateInProgress = false;
 268          }
 269      }
 270  
 271      function isMoment(obj) {
 272          return (
 273              obj instanceof Moment || (obj != null && obj._isAMomentObject != null)
 274          );
 275      }
 276  
 277      function warn(msg) {
 278          if (
 279              hooks.suppressDeprecationWarnings === false &&
 280              typeof console !== 'undefined' &&
 281              console.warn
 282          ) {
 283              console.warn('Deprecation warning: ' + msg);
 284          }
 285      }
 286  
 287      function deprecate(msg, fn) {
 288          var firstTime = true;
 289  
 290          return extend(function () {
 291              if (hooks.deprecationHandler != null) {
 292                  hooks.deprecationHandler(null, msg);
 293              }
 294              if (firstTime) {
 295                  var args = [],
 296                      arg,
 297                      i,
 298                      key;
 299                  for (i = 0; i < arguments.length; i++) {
 300                      arg = '';
 301                      if (typeof arguments[i] === 'object') {
 302                          arg += '\n[' + i + '] ';
 303                          for (key in arguments[0]) {
 304                              if (hasOwnProp(arguments[0], key)) {
 305                                  arg += key + ': ' + arguments[0][key] + ', ';
 306                              }
 307                          }
 308                          arg = arg.slice(0, -2); // Remove trailing comma and space
 309                      } else {
 310                          arg = arguments[i];
 311                      }
 312                      args.push(arg);
 313                  }
 314                  warn(
 315                      msg +
 316                          '\nArguments: ' +
 317                          Array.prototype.slice.call(args).join('') +
 318                          '\n' +
 319                          new Error().stack
 320                  );
 321                  firstTime = false;
 322              }
 323              return fn.apply(this, arguments);
 324          }, fn);
 325      }
 326  
 327      var deprecations = {};
 328  
 329      function deprecateSimple(name, msg) {
 330          if (hooks.deprecationHandler != null) {
 331              hooks.deprecationHandler(name, msg);
 332          }
 333          if (!deprecations[name]) {
 334              warn(msg);
 335              deprecations[name] = true;
 336          }
 337      }
 338  
 339      hooks.suppressDeprecationWarnings = false;
 340      hooks.deprecationHandler = null;
 341  
 342      function isFunction(input) {
 343          return (
 344              (typeof Function !== 'undefined' && input instanceof Function) ||
 345              Object.prototype.toString.call(input) === '[object Function]'
 346          );
 347      }
 348  
 349      function set(config) {
 350          var prop, i;
 351          for (i in config) {
 352              if (hasOwnProp(config, i)) {
 353                  prop = config[i];
 354                  if (isFunction(prop)) {
 355                      this[i] = prop;
 356                  } else {
 357                      this['_' + i] = prop;
 358                  }
 359              }
 360          }
 361          this._config = config;
 362          // Lenient ordinal parsing accepts just a number in addition to
 363          // number + (possibly) stuff coming from _dayOfMonthOrdinalParse.
 364          // TODO: Remove "ordinalParse" fallback in next major release.
 365          this._dayOfMonthOrdinalParseLenient = new RegExp(
 366              (this._dayOfMonthOrdinalParse.source || this._ordinalParse.source) +
 367                  '|' +
 368                  /\d{1,2}/.source
 369          );
 370      }
 371  
 372      function mergeConfigs(parentConfig, childConfig) {
 373          var res = extend({}, parentConfig),
 374              prop;
 375          for (prop in childConfig) {
 376              if (hasOwnProp(childConfig, prop)) {
 377                  if (isObject(parentConfig[prop]) && isObject(childConfig[prop])) {
 378                      res[prop] = {};
 379                      extend(res[prop], parentConfig[prop]);
 380                      extend(res[prop], childConfig[prop]);
 381                  } else if (childConfig[prop] != null) {
 382                      res[prop] = childConfig[prop];
 383                  } else {
 384                      delete res[prop];
 385                  }
 386              }
 387          }
 388          for (prop in parentConfig) {
 389              if (
 390                  hasOwnProp(parentConfig, prop) &&
 391                  !hasOwnProp(childConfig, prop) &&
 392                  isObject(parentConfig[prop])
 393              ) {
 394                  // make sure changes to properties don't modify parent config
 395                  res[prop] = extend({}, res[prop]);
 396              }
 397          }
 398          return res;
 399      }
 400  
 401      function Locale(config) {
 402          if (config != null) {
 403              this.set(config);
 404          }
 405      }
 406  
 407      var keys;
 408  
 409      if (Object.keys) {
 410          keys = Object.keys;
 411      } else {
 412          keys = function (obj) {
 413              var i,
 414                  res = [];
 415              for (i in obj) {
 416                  if (hasOwnProp(obj, i)) {
 417                      res.push(i);
 418                  }
 419              }
 420              return res;
 421          };
 422      }
 423  
 424      var defaultCalendar = {
 425          sameDay: '[Today at] LT',
 426          nextDay: '[Tomorrow at] LT',
 427          nextWeek: 'dddd [at] LT',
 428          lastDay: '[Yesterday at] LT',
 429          lastWeek: '[Last] dddd [at] LT',
 430          sameElse: 'L',
 431      };
 432  
 433      function calendar(key, mom, now) {
 434          var output = this._calendar[key] || this._calendar['sameElse'];
 435          return isFunction(output) ? output.call(mom, now) : output;
 436      }
 437  
 438      function zeroFill(number, targetLength, forceSign) {
 439          var absNumber = '' + Math.abs(number),
 440              zerosToFill = targetLength - absNumber.length,
 441              sign = number >= 0;
 442          return (
 443              (sign ? (forceSign ? '+' : '') : '-') +
 444              Math.pow(10, Math.max(0, zerosToFill)).toString().substr(1) +
 445              absNumber
 446          );
 447      }
 448  
 449      var formattingTokens = /(\[[^\[]*\])|(\\)?([Hh]mm(ss)?|Mo|MM?M?M?|Do|DDDo|DD?D?D?|ddd?d?|do?|w[o|w]?|W[o|W]?|Qo?|N{1,5}|YYYYYY|YYYYY|YYYY|YY|y{2,4}|yo?|gg(ggg?)?|GG(GGG?)?|e|E|a|A|hh?|HH?|kk?|mm?|ss?|S{1,9}|x|X|zz?|ZZ?|.)/g,
 450          localFormattingTokens = /(\[[^\[]*\])|(\\)?(LTS|LT|LL?L?L?|l{1,4})/g,
 451          formatFunctions = {},
 452          formatTokenFunctions = {};
 453  
 454      // token:    'M'
 455      // padded:   ['MM', 2]
 456      // ordinal:  'Mo'
 457      // callback: function () { this.month() + 1 }
 458      function addFormatToken(token, padded, ordinal, callback) {
 459          var func = callback;
 460          if (typeof callback === 'string') {
 461              func = function () {
 462                  return this[callback]();
 463              };
 464          }
 465          if (token) {
 466              formatTokenFunctions[token] = func;
 467          }
 468          if (padded) {
 469              formatTokenFunctions[padded[0]] = function () {
 470                  return zeroFill(func.apply(this, arguments), padded[1], padded[2]);
 471              };
 472          }
 473          if (ordinal) {
 474              formatTokenFunctions[ordinal] = function () {
 475                  return this.localeData().ordinal(
 476                      func.apply(this, arguments),
 477                      token
 478                  );
 479              };
 480          }
 481      }
 482  
 483      function removeFormattingTokens(input) {
 484          if (input.match(/\[[\s\S]/)) {
 485              return input.replace(/^\[|\]$/g, '');
 486          }
 487          return input.replace(/\\/g, '');
 488      }
 489  
 490      function makeFormatFunction(format) {
 491          var array = format.match(formattingTokens),
 492              i,
 493              length;
 494  
 495          for (i = 0, length = array.length; i < length; i++) {
 496              if (formatTokenFunctions[array[i]]) {
 497                  array[i] = formatTokenFunctions[array[i]];
 498              } else {
 499                  array[i] = removeFormattingTokens(array[i]);
 500              }
 501          }
 502  
 503          return function (mom) {
 504              var output = '',
 505                  i;
 506              for (i = 0; i < length; i++) {
 507                  output += isFunction(array[i])
 508                      ? array[i].call(mom, format)
 509                      : array[i];
 510              }
 511              return output;
 512          };
 513      }
 514  
 515      // format date using native date object
 516      function formatMoment(m, format) {
 517          if (!m.isValid()) {
 518              return m.localeData().invalidDate();
 519          }
 520  
 521          format = expandFormat(format, m.localeData());
 522          formatFunctions[format] =
 523              formatFunctions[format] || makeFormatFunction(format);
 524  
 525          return formatFunctions[format](m);
 526      }
 527  
 528      function expandFormat(format, locale) {
 529          var i = 5;
 530  
 531          function replaceLongDateFormatTokens(input) {
 532              return locale.longDateFormat(input) || input;
 533          }
 534  
 535          localFormattingTokens.lastIndex = 0;
 536          while (i >= 0 && localFormattingTokens.test(format)) {
 537              format = format.replace(
 538                  localFormattingTokens,
 539                  replaceLongDateFormatTokens
 540              );
 541              localFormattingTokens.lastIndex = 0;
 542              i -= 1;
 543          }
 544  
 545          return format;
 546      }
 547  
 548      var defaultLongDateFormat = {
 549          LTS: 'h:mm:ss A',
 550          LT: 'h:mm A',
 551          L: 'MM/DD/YYYY',
 552          LL: 'MMMM D, YYYY',
 553          LLL: 'MMMM D, YYYY h:mm A',
 554          LLLL: 'dddd, MMMM D, YYYY h:mm A',
 555      };
 556  
 557      function longDateFormat(key) {
 558          var format = this._longDateFormat[key],
 559              formatUpper = this._longDateFormat[key.toUpperCase()];
 560  
 561          if (format || !formatUpper) {
 562              return format;
 563          }
 564  
 565          this._longDateFormat[key] = formatUpper
 566              .match(formattingTokens)
 567              .map(function (tok) {
 568                  if (
 569                      tok === 'MMMM' ||
 570                      tok === 'MM' ||
 571                      tok === 'DD' ||
 572                      tok === 'dddd'
 573                  ) {
 574                      return tok.slice(1);
 575                  }
 576                  return tok;
 577              })
 578              .join('');
 579  
 580          return this._longDateFormat[key];
 581      }
 582  
 583      var defaultInvalidDate = 'Invalid date';
 584  
 585      function invalidDate() {
 586          return this._invalidDate;
 587      }
 588  
 589      var defaultOrdinal = '%d',
 590          defaultDayOfMonthOrdinalParse = /\d{1,2}/;
 591  
 592      function ordinal(number) {
 593          return this._ordinal.replace('%d', number);
 594      }
 595  
 596      var defaultRelativeTime = {
 597          future: 'in %s',
 598          past: '%s ago',
 599          s: 'a few seconds',
 600          ss: '%d seconds',
 601          m: 'a minute',
 602          mm: '%d minutes',
 603          h: 'an hour',
 604          hh: '%d hours',
 605          d: 'a day',
 606          dd: '%d days',
 607          w: 'a week',
 608          ww: '%d weeks',
 609          M: 'a month',
 610          MM: '%d months',
 611          y: 'a year',
 612          yy: '%d years',
 613      };
 614  
 615      function relativeTime(number, withoutSuffix, string, isFuture) {
 616          var output = this._relativeTime[string];
 617          return isFunction(output)
 618              ? output(number, withoutSuffix, string, isFuture)
 619              : output.replace(/%d/i, number);
 620      }
 621  
 622      function pastFuture(diff, output) {
 623          var format = this._relativeTime[diff > 0 ? 'future' : 'past'];
 624          return isFunction(format) ? format(output) : format.replace(/%s/i, output);
 625      }
 626  
 627      var aliases = {};
 628  
 629      function addUnitAlias(unit, shorthand) {
 630          var lowerCase = unit.toLowerCase();
 631          aliases[lowerCase] = aliases[lowerCase + 's'] = aliases[shorthand] = unit;
 632      }
 633  
 634      function normalizeUnits(units) {
 635          return typeof units === 'string'
 636              ? aliases[units] || aliases[units.toLowerCase()]
 637              : undefined;
 638      }
 639  
 640      function normalizeObjectUnits(inputObject) {
 641          var normalizedInput = {},
 642              normalizedProp,
 643              prop;
 644  
 645          for (prop in inputObject) {
 646              if (hasOwnProp(inputObject, prop)) {
 647                  normalizedProp = normalizeUnits(prop);
 648                  if (normalizedProp) {
 649                      normalizedInput[normalizedProp] = inputObject[prop];
 650                  }
 651              }
 652          }
 653  
 654          return normalizedInput;
 655      }
 656  
 657      var priorities = {};
 658  
 659      function addUnitPriority(unit, priority) {
 660          priorities[unit] = priority;
 661      }
 662  
 663      function getPrioritizedUnits(unitsObj) {
 664          var units = [],
 665              u;
 666          for (u in unitsObj) {
 667              if (hasOwnProp(unitsObj, u)) {
 668                  units.push({ unit: u, priority: priorities[u] });
 669              }
 670          }
 671          units.sort(function (a, b) {
 672              return a.priority - b.priority;
 673          });
 674          return units;
 675      }
 676  
 677      function isLeapYear(year) {
 678          return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
 679      }
 680  
 681      function absFloor(number) {
 682          if (number < 0) {
 683              // -0 -> 0
 684              return Math.ceil(number) || 0;
 685          } else {
 686              return Math.floor(number);
 687          }
 688      }
 689  
 690      function toInt(argumentForCoercion) {
 691          var coercedNumber = +argumentForCoercion,
 692              value = 0;
 693  
 694          if (coercedNumber !== 0 && isFinite(coercedNumber)) {
 695              value = absFloor(coercedNumber);
 696          }
 697  
 698          return value;
 699      }
 700  
 701      function makeGetSet(unit, keepTime) {
 702          return function (value) {
 703              if (value != null) {
 704                  set$1(this, unit, value);
 705                  hooks.updateOffset(this, keepTime);
 706                  return this;
 707              } else {
 708                  return get(this, unit);
 709              }
 710          };
 711      }
 712  
 713      function get(mom, unit) {
 714          return mom.isValid()
 715              ? mom._d['get' + (mom._isUTC ? 'UTC' : '') + unit]()
 716              : NaN;
 717      }
 718  
 719      function set$1(mom, unit, value) {
 720          if (mom.isValid() && !isNaN(value)) {
 721              if (
 722                  unit === 'FullYear' &&
 723                  isLeapYear(mom.year()) &&
 724                  mom.month() === 1 &&
 725                  mom.date() === 29
 726              ) {
 727                  value = toInt(value);
 728                  mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](
 729                      value,
 730                      mom.month(),
 731                      daysInMonth(value, mom.month())
 732                  );
 733              } else {
 734                  mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](value);
 735              }
 736          }
 737      }
 738  
 739      // MOMENTS
 740  
 741      function stringGet(units) {
 742          units = normalizeUnits(units);
 743          if (isFunction(this[units])) {
 744              return this[units]();
 745          }
 746          return this;
 747      }
 748  
 749      function stringSet(units, value) {
 750          if (typeof units === 'object') {
 751              units = normalizeObjectUnits(units);
 752              var prioritized = getPrioritizedUnits(units),
 753                  i;
 754              for (i = 0; i < prioritized.length; i++) {
 755                  this[prioritized[i].unit](units[prioritized[i].unit]);
 756              }
 757          } else {
 758              units = normalizeUnits(units);
 759              if (isFunction(this[units])) {
 760                  return this[units](value);
 761              }
 762          }
 763          return this;
 764      }
 765  
 766      var match1 = /\d/, //       0 - 9
 767          match2 = /\d\d/, //      00 - 99
 768          match3 = /\d{3}/, //     000 - 999
 769          match4 = /\d{4}/, //    0000 - 9999
 770          match6 = /[+-]?\d{6}/, // -999999 - 999999
 771          match1to2 = /\d\d?/, //       0 - 99
 772          match3to4 = /\d\d\d\d?/, //     999 - 9999
 773          match5to6 = /\d\d\d\d\d\d?/, //   99999 - 999999
 774          match1to3 = /\d{1,3}/, //       0 - 999
 775          match1to4 = /\d{1,4}/, //       0 - 9999
 776          match1to6 = /[+-]?\d{1,6}/, // -999999 - 999999
 777          matchUnsigned = /\d+/, //       0 - inf
 778          matchSigned = /[+-]?\d+/, //    -inf - inf
 779          matchOffset = /Z|[+-]\d\d:?\d\d/gi, // +00:00 -00:00 +0000 -0000 or Z
 780          matchShortOffset = /Z|[+-]\d\d(?::?\d\d)?/gi, // +00 -00 +00:00 -00:00 +0000 -0000 or Z
 781          matchTimestamp = /[+-]?\d+(\.\d{1,3})?/, // 123456789 123456789.123
 782          // any word (or two) characters or numbers including two/three word month in arabic.
 783          // includes scottish gaelic two word and hyphenated months
 784          matchWord = /[0-9]{0,256}['a-z\u00A0-\u05FF\u0700-\uD7FF\uF900-\uFDCF\uFDF0-\uFF07\uFF10-\uFFEF]{1,256}|[\u0600-\u06FF\/]{1,256}(\s*?[\u0600-\u06FF]{1,256}){1,2}/i,
 785          regexes;
 786  
 787      regexes = {};
 788  
 789      function addRegexToken(token, regex, strictRegex) {
 790          regexes[token] = isFunction(regex)
 791              ? regex
 792              : function (isStrict, localeData) {
 793                    return isStrict && strictRegex ? strictRegex : regex;
 794                };
 795      }
 796  
 797      function getParseRegexForToken(token, config) {
 798          if (!hasOwnProp(regexes, token)) {
 799              return new RegExp(unescapeFormat(token));
 800          }
 801  
 802          return regexes[token](config._strict, config._locale);
 803      }
 804  
 805      // Code from http://stackoverflow.com/questions/3561493/is-there-a-regexp-escape-function-in-javascript
 806      function unescapeFormat(s) {
 807          return regexEscape(
 808              s
 809                  .replace('\\', '')
 810                  .replace(/\\(\[)|\\(\])|\[([^\]\[]*)\]|\\(.)/g, function (
 811                      matched,
 812                      p1,
 813                      p2,
 814                      p3,
 815                      p4
 816                  ) {
 817                      return p1 || p2 || p3 || p4;
 818                  })
 819          );
 820      }
 821  
 822      function regexEscape(s) {
 823          return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
 824      }
 825  
 826      var tokens = {};
 827  
 828      function addParseToken(token, callback) {
 829          var i,
 830              func = callback;
 831          if (typeof token === 'string') {
 832              token = [token];
 833          }
 834          if (isNumber(callback)) {
 835              func = function (input, array) {
 836                  array[callback] = toInt(input);
 837              };
 838          }
 839          for (i = 0; i < token.length; i++) {
 840              tokens[token[i]] = func;
 841          }
 842      }
 843  
 844      function addWeekParseToken(token, callback) {
 845          addParseToken(token, function (input, array, config, token) {
 846              config._w = config._w || {};
 847              callback(input, config._w, config, token);
 848          });
 849      }
 850  
 851      function addTimeToArrayFromToken(token, input, config) {
 852          if (input != null && hasOwnProp(tokens, token)) {
 853              tokens[token](input, config._a, config, token);
 854          }
 855      }
 856  
 857      var YEAR = 0,
 858          MONTH = 1,
 859          DATE = 2,
 860          HOUR = 3,
 861          MINUTE = 4,
 862          SECOND = 5,
 863          MILLISECOND = 6,
 864          WEEK = 7,
 865          WEEKDAY = 8;
 866  
 867      function mod(n, x) {
 868          return ((n % x) + x) % x;
 869      }
 870  
 871      var indexOf;
 872  
 873      if (Array.prototype.indexOf) {
 874          indexOf = Array.prototype.indexOf;
 875      } else {
 876          indexOf = function (o) {
 877              // I know
 878              var i;
 879              for (i = 0; i < this.length; ++i) {
 880                  if (this[i] === o) {
 881                      return i;
 882                  }
 883              }
 884              return -1;
 885          };
 886      }
 887  
 888      function daysInMonth(year, month) {
 889          if (isNaN(year) || isNaN(month)) {
 890              return NaN;
 891          }
 892          var modMonth = mod(month, 12);
 893          year += (month - modMonth) / 12;
 894          return modMonth === 1
 895              ? isLeapYear(year)
 896                  ? 29
 897                  : 28
 898              : 31 - ((modMonth % 7) % 2);
 899      }
 900  
 901      // FORMATTING
 902  
 903      addFormatToken('M', ['MM', 2], 'Mo', function () {
 904          return this.month() + 1;
 905      });
 906  
 907      addFormatToken('MMM', 0, 0, function (format) {
 908          return this.localeData().monthsShort(this, format);
 909      });
 910  
 911      addFormatToken('MMMM', 0, 0, function (format) {
 912          return this.localeData().months(this, format);
 913      });
 914  
 915      // ALIASES
 916  
 917      addUnitAlias('month', 'M');
 918  
 919      // PRIORITY
 920  
 921      addUnitPriority('month', 8);
 922  
 923      // PARSING
 924  
 925      addRegexToken('M', match1to2);
 926      addRegexToken('MM', match1to2, match2);
 927      addRegexToken('MMM', function (isStrict, locale) {
 928          return locale.monthsShortRegex(isStrict);
 929      });
 930      addRegexToken('MMMM', function (isStrict, locale) {
 931          return locale.monthsRegex(isStrict);
 932      });
 933  
 934      addParseToken(['M', 'MM'], function (input, array) {
 935          array[MONTH] = toInt(input) - 1;
 936      });
 937  
 938      addParseToken(['MMM', 'MMMM'], function (input, array, config, token) {
 939          var month = config._locale.monthsParse(input, token, config._strict);
 940          // if we didn't find a month name, mark the date as invalid.
 941          if (month != null) {
 942              array[MONTH] = month;
 943          } else {
 944              getParsingFlags(config).invalidMonth = input;
 945          }
 946      });
 947  
 948      // LOCALES
 949  
 950      var defaultLocaleMonths = 'January_February_March_April_May_June_July_August_September_October_November_December'.split(
 951              '_'
 952          ),
 953          defaultLocaleMonthsShort = 'Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec'.split(
 954              '_'
 955          ),
 956          MONTHS_IN_FORMAT = /D[oD]?(\[[^\[\]]*\]|\s)+MMMM?/,
 957          defaultMonthsShortRegex = matchWord,
 958          defaultMonthsRegex = matchWord;
 959  
 960      function localeMonths(m, format) {
 961          if (!m) {
 962              return isArray(this._months)
 963                  ? this._months
 964                  : this._months['standalone'];
 965          }
 966          return isArray(this._months)
 967              ? this._months[m.month()]
 968              : this._months[
 969                    (this._months.isFormat || MONTHS_IN_FORMAT).test(format)
 970                        ? 'format'
 971                        : 'standalone'
 972                ][m.month()];
 973      }
 974  
 975      function localeMonthsShort(m, format) {
 976          if (!m) {
 977              return isArray(this._monthsShort)
 978                  ? this._monthsShort
 979                  : this._monthsShort['standalone'];
 980          }
 981          return isArray(this._monthsShort)
 982              ? this._monthsShort[m.month()]
 983              : this._monthsShort[
 984                    MONTHS_IN_FORMAT.test(format) ? 'format' : 'standalone'
 985                ][m.month()];
 986      }
 987  
 988      function handleStrictParse(monthName, format, strict) {
 989          var i,
 990              ii,
 991              mom,
 992              llc = monthName.toLocaleLowerCase();
 993          if (!this._monthsParse) {
 994              // this is not used
 995              this._monthsParse = [];
 996              this._longMonthsParse = [];
 997              this._shortMonthsParse = [];
 998              for (i = 0; i < 12; ++i) {
 999                  mom = createUTC([2000, i]);
1000                  this._shortMonthsParse[i] = this.monthsShort(
1001                      mom,
1002                      ''
1003                  ).toLocaleLowerCase();
1004                  this._longMonthsParse[i] = this.months(mom, '').toLocaleLowerCase();
1005              }
1006          }
1007  
1008          if (strict) {
1009              if (format === 'MMM') {
1010                  ii = indexOf.call(this._shortMonthsParse, llc);
1011                  return ii !== -1 ? ii : null;
1012              } else {
1013                  ii = indexOf.call(this._longMonthsParse, llc);
1014                  return ii !== -1 ? ii : null;
1015              }
1016          } else {
1017              if (format === 'MMM') {
1018                  ii = indexOf.call(this._shortMonthsParse, llc);
1019                  if (ii !== -1) {
1020                      return ii;
1021                  }
1022                  ii = indexOf.call(this._longMonthsParse, llc);
1023                  return ii !== -1 ? ii : null;
1024              } else {
1025                  ii = indexOf.call(this._longMonthsParse, llc);
1026                  if (ii !== -1) {
1027                      return ii;
1028                  }
1029                  ii = indexOf.call(this._shortMonthsParse, llc);
1030                  return ii !== -1 ? ii : null;
1031              }
1032          }
1033      }
1034  
1035      function localeMonthsParse(monthName, format, strict) {
1036          var i, mom, regex;
1037  
1038          if (this._monthsParseExact) {
1039              return handleStrictParse.call(this, monthName, format, strict);
1040          }
1041  
1042          if (!this._monthsParse) {
1043              this._monthsParse = [];
1044              this._longMonthsParse = [];
1045              this._shortMonthsParse = [];
1046          }
1047  
1048          // TODO: add sorting
1049          // Sorting makes sure if one month (or abbr) is a prefix of another
1050          // see sorting in computeMonthsParse
1051          for (i = 0; i < 12; i++) {
1052              // make the regex if we don't have it already
1053              mom = createUTC([2000, i]);
1054              if (strict && !this._longMonthsParse[i]) {
1055                  this._longMonthsParse[i] = new RegExp(
1056                      '^' + this.months(mom, '').replace('.', '') + '$',
1057                      'i'
1058                  );
1059                  this._shortMonthsParse[i] = new RegExp(
1060                      '^' + this.monthsShort(mom, '').replace('.', '') + '$',
1061                      'i'
1062                  );
1063              }
1064              if (!strict && !this._monthsParse[i]) {
1065                  regex =
1066                      '^' + this.months(mom, '') + '|^' + this.monthsShort(mom, '');
1067                  this._monthsParse[i] = new RegExp(regex.replace('.', ''), 'i');
1068              }
1069              // test the regex
1070              if (
1071                  strict &&
1072                  format === 'MMMM' &&
1073                  this._longMonthsParse[i].test(monthName)
1074              ) {
1075                  return i;
1076              } else if (
1077                  strict &&
1078                  format === 'MMM' &&
1079                  this._shortMonthsParse[i].test(monthName)
1080              ) {
1081                  return i;
1082              } else if (!strict && this._monthsParse[i].test(monthName)) {
1083                  return i;
1084              }
1085          }
1086      }
1087  
1088      // MOMENTS
1089  
1090      function setMonth(mom, value) {
1091          var dayOfMonth;
1092  
1093          if (!mom.isValid()) {
1094              // No op
1095              return mom;
1096          }
1097  
1098          if (typeof value === 'string') {
1099              if (/^\d+$/.test(value)) {
1100                  value = toInt(value);
1101              } else {
1102                  value = mom.localeData().monthsParse(value);
1103                  // TODO: Another silent failure?
1104                  if (!isNumber(value)) {
1105                      return mom;
1106                  }
1107              }
1108          }
1109  
1110          dayOfMonth = Math.min(mom.date(), daysInMonth(mom.year(), value));
1111          mom._d['set' + (mom._isUTC ? 'UTC' : '') + 'Month'](value, dayOfMonth);
1112          return mom;
1113      }
1114  
1115      function getSetMonth(value) {
1116          if (value != null) {
1117              setMonth(this, value);
1118              hooks.updateOffset(this, true);
1119              return this;
1120          } else {
1121              return get(this, 'Month');
1122          }
1123      }
1124  
1125      function getDaysInMonth() {
1126          return daysInMonth(this.year(), this.month());
1127      }
1128  
1129      function monthsShortRegex(isStrict) {
1130          if (this._monthsParseExact) {
1131              if (!hasOwnProp(this, '_monthsRegex')) {
1132                  computeMonthsParse.call(this);
1133              }
1134              if (isStrict) {
1135                  return this._monthsShortStrictRegex;
1136              } else {
1137                  return this._monthsShortRegex;
1138              }
1139          } else {
1140              if (!hasOwnProp(this, '_monthsShortRegex')) {
1141                  this._monthsShortRegex = defaultMonthsShortRegex;
1142              }
1143              return this._monthsShortStrictRegex && isStrict
1144                  ? this._monthsShortStrictRegex
1145                  : this._monthsShortRegex;
1146          }
1147      }
1148  
1149      function monthsRegex(isStrict) {
1150          if (this._monthsParseExact) {
1151              if (!hasOwnProp(this, '_monthsRegex')) {
1152                  computeMonthsParse.call(this);
1153              }
1154              if (isStrict) {
1155                  return this._monthsStrictRegex;
1156              } else {
1157                  return this._monthsRegex;
1158              }
1159          } else {
1160              if (!hasOwnProp(this, '_monthsRegex')) {
1161                  this._monthsRegex = defaultMonthsRegex;
1162              }
1163              return this._monthsStrictRegex && isStrict
1164                  ? this._monthsStrictRegex
1165                  : this._monthsRegex;
1166          }
1167      }
1168  
1169      function computeMonthsParse() {
1170          function cmpLenRev(a, b) {
1171              return b.length - a.length;
1172          }
1173  
1174          var shortPieces = [],
1175              longPieces = [],
1176              mixedPieces = [],
1177              i,
1178              mom;
1179          for (i = 0; i < 12; i++) {
1180              // make the regex if we don't have it already
1181              mom = createUTC([2000, i]);
1182              shortPieces.push(this.monthsShort(mom, ''));
1183              longPieces.push(this.months(mom, ''));
1184              mixedPieces.push(this.months(mom, ''));
1185              mixedPieces.push(this.monthsShort(mom, ''));
1186          }
1187          // Sorting makes sure if one month (or abbr) is a prefix of another it
1188          // will match the longer piece.
1189          shortPieces.sort(cmpLenRev);
1190          longPieces.sort(cmpLenRev);
1191          mixedPieces.sort(cmpLenRev);
1192          for (i = 0; i < 12; i++) {
1193              shortPieces[i] = regexEscape(shortPieces[i]);
1194              longPieces[i] = regexEscape(longPieces[i]);
1195          }
1196          for (i = 0; i < 24; i++) {
1197              mixedPieces[i] = regexEscape(mixedPieces[i]);
1198          }
1199  
1200          this._monthsRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
1201          this._monthsShortRegex = this._monthsRegex;
1202          this._monthsStrictRegex = new RegExp(
1203              '^(' + longPieces.join('|') + ')',
1204              'i'
1205          );
1206          this._monthsShortStrictRegex = new RegExp(
1207              '^(' + shortPieces.join('|') + ')',
1208              'i'
1209          );
1210      }
1211  
1212      // FORMATTING
1213  
1214      addFormatToken('Y', 0, 0, function () {
1215          var y = this.year();
1216          return y <= 9999 ? zeroFill(y, 4) : '+' + y;
1217      });
1218  
1219      addFormatToken(0, ['YY', 2], 0, function () {
1220          return this.year() % 100;
1221      });
1222  
1223      addFormatToken(0, ['YYYY', 4], 0, 'year');
1224      addFormatToken(0, ['YYYYY', 5], 0, 'year');
1225      addFormatToken(0, ['YYYYYY', 6, true], 0, 'year');
1226  
1227      // ALIASES
1228  
1229      addUnitAlias('year', 'y');
1230  
1231      // PRIORITIES
1232  
1233      addUnitPriority('year', 1);
1234  
1235      // PARSING
1236  
1237      addRegexToken('Y', matchSigned);
1238      addRegexToken('YY', match1to2, match2);
1239      addRegexToken('YYYY', match1to4, match4);
1240      addRegexToken('YYYYY', match1to6, match6);
1241      addRegexToken('YYYYYY', match1to6, match6);
1242  
1243      addParseToken(['YYYYY', 'YYYYYY'], YEAR);
1244      addParseToken('YYYY', function (input, array) {
1245          array[YEAR] =
1246              input.length === 2 ? hooks.parseTwoDigitYear(input) : toInt(input);
1247      });
1248      addParseToken('YY', function (input, array) {
1249          array[YEAR] = hooks.parseTwoDigitYear(input);
1250      });
1251      addParseToken('Y', function (input, array) {
1252          array[YEAR] = parseInt(input, 10);
1253      });
1254  
1255      // HELPERS
1256  
1257      function daysInYear(year) {
1258          return isLeapYear(year) ? 366 : 365;
1259      }
1260  
1261      // HOOKS
1262  
1263      hooks.parseTwoDigitYear = function (input) {
1264          return toInt(input) + (toInt(input) > 68 ? 1900 : 2000);
1265      };
1266  
1267      // MOMENTS
1268  
1269      var getSetYear = makeGetSet('FullYear', true);
1270  
1271      function getIsLeapYear() {
1272          return isLeapYear(this.year());
1273      }
1274  
1275      function createDate(y, m, d, h, M, s, ms) {
1276          // can't just apply() to create a date:
1277          // https://stackoverflow.com/q/181348
1278          var date;
1279          // the date constructor remaps years 0-99 to 1900-1999
1280          if (y < 100 && y >= 0) {
1281              // preserve leap years using a full 400 year cycle, then reset
1282              date = new Date(y + 400, m, d, h, M, s, ms);
1283              if (isFinite(date.getFullYear())) {
1284                  date.setFullYear(y);
1285              }
1286          } else {
1287              date = new Date(y, m, d, h, M, s, ms);
1288          }
1289  
1290          return date;
1291      }
1292  
1293      function createUTCDate(y) {
1294          var date, args;
1295          // the Date.UTC function remaps years 0-99 to 1900-1999
1296          if (y < 100 && y >= 0) {
1297              args = Array.prototype.slice.call(arguments);
1298              // preserve leap years using a full 400 year cycle, then reset
1299              args[0] = y + 400;
1300              date = new Date(Date.UTC.apply(null, args));
1301              if (isFinite(date.getUTCFullYear())) {
1302                  date.setUTCFullYear(y);
1303              }
1304          } else {
1305              date = new Date(Date.UTC.apply(null, arguments));
1306          }
1307  
1308          return date;
1309      }
1310  
1311      // start-of-first-week - start-of-year
1312      function firstWeekOffset(year, dow, doy) {
1313          var // first-week day -- which january is always in the first week (4 for iso, 1 for other)
1314              fwd = 7 + dow - doy,
1315              // first-week day local weekday -- which local weekday is fwd
1316              fwdlw = (7 + createUTCDate(year, 0, fwd).getUTCDay() - dow) % 7;
1317  
1318          return -fwdlw + fwd - 1;
1319      }
1320  
1321      // https://en.wikipedia.org/wiki/ISO_week_date#Calculating_a_date_given_the_year.2C_week_number_and_weekday
1322      function dayOfYearFromWeeks(year, week, weekday, dow, doy) {
1323          var localWeekday = (7 + weekday - dow) % 7,
1324              weekOffset = firstWeekOffset(year, dow, doy),
1325              dayOfYear = 1 + 7 * (week - 1) + localWeekday + weekOffset,
1326              resYear,
1327              resDayOfYear;
1328  
1329          if (dayOfYear <= 0) {
1330              resYear = year - 1;
1331              resDayOfYear = daysInYear(resYear) + dayOfYear;
1332          } else if (dayOfYear > daysInYear(year)) {
1333              resYear = year + 1;
1334              resDayOfYear = dayOfYear - daysInYear(year);
1335          } else {
1336              resYear = year;
1337              resDayOfYear = dayOfYear;
1338          }
1339  
1340          return {
1341              year: resYear,
1342              dayOfYear: resDayOfYear,
1343          };
1344      }
1345  
1346      function weekOfYear(mom, dow, doy) {
1347          var weekOffset = firstWeekOffset(mom.year(), dow, doy),
1348              week = Math.floor((mom.dayOfYear() - weekOffset - 1) / 7) + 1,
1349              resWeek,
1350              resYear;
1351  
1352          if (week < 1) {
1353              resYear = mom.year() - 1;
1354              resWeek = week + weeksInYear(resYear, dow, doy);
1355          } else if (week > weeksInYear(mom.year(), dow, doy)) {
1356              resWeek = week - weeksInYear(mom.year(), dow, doy);
1357              resYear = mom.year() + 1;
1358          } else {
1359              resYear = mom.year();
1360              resWeek = week;
1361          }
1362  
1363          return {
1364              week: resWeek,
1365              year: resYear,
1366          };
1367      }
1368  
1369      function weeksInYear(year, dow, doy) {
1370          var weekOffset = firstWeekOffset(year, dow, doy),
1371              weekOffsetNext = firstWeekOffset(year + 1, dow, doy);
1372          return (daysInYear(year) - weekOffset + weekOffsetNext) / 7;
1373      }
1374  
1375      // FORMATTING
1376  
1377      addFormatToken('w', ['ww', 2], 'wo', 'week');
1378      addFormatToken('W', ['WW', 2], 'Wo', 'isoWeek');
1379  
1380      // ALIASES
1381  
1382      addUnitAlias('week', 'w');
1383      addUnitAlias('isoWeek', 'W');
1384  
1385      // PRIORITIES
1386  
1387      addUnitPriority('week', 5);
1388      addUnitPriority('isoWeek', 5);
1389  
1390      // PARSING
1391  
1392      addRegexToken('w', match1to2);
1393      addRegexToken('ww', match1to2, match2);
1394      addRegexToken('W', match1to2);
1395      addRegexToken('WW', match1to2, match2);
1396  
1397      addWeekParseToken(['w', 'ww', 'W', 'WW'], function (
1398          input,
1399          week,
1400          config,
1401          token
1402      ) {
1403          week[token.substr(0, 1)] = toInt(input);
1404      });
1405  
1406      // HELPERS
1407  
1408      // LOCALES
1409  
1410      function localeWeek(mom) {
1411          return weekOfYear(mom, this._week.dow, this._week.doy).week;
1412      }
1413  
1414      var defaultLocaleWeek = {
1415          dow: 0, // Sunday is the first day of the week.
1416          doy: 6, // The week that contains Jan 6th is the first week of the year.
1417      };
1418  
1419      function localeFirstDayOfWeek() {
1420          return this._week.dow;
1421      }
1422  
1423      function localeFirstDayOfYear() {
1424          return this._week.doy;
1425      }
1426  
1427      // MOMENTS
1428  
1429      function getSetWeek(input) {
1430          var week = this.localeData().week(this);
1431          return input == null ? week : this.add((input - week) * 7, 'd');
1432      }
1433  
1434      function getSetISOWeek(input) {
1435          var week = weekOfYear(this, 1, 4).week;
1436          return input == null ? week : this.add((input - week) * 7, 'd');
1437      }
1438  
1439      // FORMATTING
1440  
1441      addFormatToken('d', 0, 'do', 'day');
1442  
1443      addFormatToken('dd', 0, 0, function (format) {
1444          return this.localeData().weekdaysMin(this, format);
1445      });
1446  
1447      addFormatToken('ddd', 0, 0, function (format) {
1448          return this.localeData().weekdaysShort(this, format);
1449      });
1450  
1451      addFormatToken('dddd', 0, 0, function (format) {
1452          return this.localeData().weekdays(this, format);
1453      });
1454  
1455      addFormatToken('e', 0, 0, 'weekday');
1456      addFormatToken('E', 0, 0, 'isoWeekday');
1457  
1458      // ALIASES
1459  
1460      addUnitAlias('day', 'd');
1461      addUnitAlias('weekday', 'e');
1462      addUnitAlias('isoWeekday', 'E');
1463  
1464      // PRIORITY
1465      addUnitPriority('day', 11);
1466      addUnitPriority('weekday', 11);
1467      addUnitPriority('isoWeekday', 11);
1468  
1469      // PARSING
1470  
1471      addRegexToken('d', match1to2);
1472      addRegexToken('e', match1to2);
1473      addRegexToken('E', match1to2);
1474      addRegexToken('dd', function (isStrict, locale) {
1475          return locale.weekdaysMinRegex(isStrict);
1476      });
1477      addRegexToken('ddd', function (isStrict, locale) {
1478          return locale.weekdaysShortRegex(isStrict);
1479      });
1480      addRegexToken('dddd', function (isStrict, locale) {
1481          return locale.weekdaysRegex(isStrict);
1482      });
1483  
1484      addWeekParseToken(['dd', 'ddd', 'dddd'], function (input, week, config, token) {
1485          var weekday = config._locale.weekdaysParse(input, token, config._strict);
1486          // if we didn't get a weekday name, mark the date as invalid
1487          if (weekday != null) {
1488              week.d = weekday;
1489          } else {
1490              getParsingFlags(config).invalidWeekday = input;
1491          }
1492      });
1493  
1494      addWeekParseToken(['d', 'e', 'E'], function (input, week, config, token) {
1495          week[token] = toInt(input);
1496      });
1497  
1498      // HELPERS
1499  
1500      function parseWeekday(input, locale) {
1501          if (typeof input !== 'string') {
1502              return input;
1503          }
1504  
1505          if (!isNaN(input)) {
1506              return parseInt(input, 10);
1507          }
1508  
1509          input = locale.weekdaysParse(input);
1510          if (typeof input === 'number') {
1511              return input;
1512          }
1513  
1514          return null;
1515      }
1516  
1517      function parseIsoWeekday(input, locale) {
1518          if (typeof input === 'string') {
1519              return locale.weekdaysParse(input) % 7 || 7;
1520          }
1521          return isNaN(input) ? null : input;
1522      }
1523  
1524      // LOCALES
1525      function shiftWeekdays(ws, n) {
1526          return ws.slice(n, 7).concat(ws.slice(0, n));
1527      }
1528  
1529      var defaultLocaleWeekdays = 'Sunday_Monday_Tuesday_Wednesday_Thursday_Friday_Saturday'.split(
1530              '_'
1531          ),
1532          defaultLocaleWeekdaysShort = 'Sun_Mon_Tue_Wed_Thu_Fri_Sat'.split('_'),
1533          defaultLocaleWeekdaysMin = 'Su_Mo_Tu_We_Th_Fr_Sa'.split('_'),
1534          defaultWeekdaysRegex = matchWord,
1535          defaultWeekdaysShortRegex = matchWord,
1536          defaultWeekdaysMinRegex = matchWord;
1537  
1538      function localeWeekdays(m, format) {
1539          var weekdays = isArray(this._weekdays)
1540              ? this._weekdays
1541              : this._weekdays[
1542                    m && m !== true && this._weekdays.isFormat.test(format)
1543                        ? 'format'
1544                        : 'standalone'
1545                ];
1546          return m === true
1547              ? shiftWeekdays(weekdays, this._week.dow)
1548              : m
1549              ? weekdays[m.day()]
1550              : weekdays;
1551      }
1552  
1553      function localeWeekdaysShort(m) {
1554          return m === true
1555              ? shiftWeekdays(this._weekdaysShort, this._week.dow)
1556              : m
1557              ? this._weekdaysShort[m.day()]
1558              : this._weekdaysShort;
1559      }
1560  
1561      function localeWeekdaysMin(m) {
1562          return m === true
1563              ? shiftWeekdays(this._weekdaysMin, this._week.dow)
1564              : m
1565              ? this._weekdaysMin[m.day()]
1566              : this._weekdaysMin;
1567      }
1568  
1569      function handleStrictParse$1(weekdayName, format, strict) {
1570          var i,
1571              ii,
1572              mom,
1573              llc = weekdayName.toLocaleLowerCase();
1574          if (!this._weekdaysParse) {
1575              this._weekdaysParse = [];
1576              this._shortWeekdaysParse = [];
1577              this._minWeekdaysParse = [];
1578  
1579              for (i = 0; i < 7; ++i) {
1580                  mom = createUTC([2000, 1]).day(i);
1581                  this._minWeekdaysParse[i] = this.weekdaysMin(
1582                      mom,
1583                      ''
1584                  ).toLocaleLowerCase();
1585                  this._shortWeekdaysParse[i] = this.weekdaysShort(
1586                      mom,
1587                      ''
1588                  ).toLocaleLowerCase();
1589                  this._weekdaysParse[i] = this.weekdays(mom, '').toLocaleLowerCase();
1590              }
1591          }
1592  
1593          if (strict) {
1594              if (format === 'dddd') {
1595                  ii = indexOf.call(this._weekdaysParse, llc);
1596                  return ii !== -1 ? ii : null;
1597              } else if (format === 'ddd') {
1598                  ii = indexOf.call(this._shortWeekdaysParse, llc);
1599                  return ii !== -1 ? ii : null;
1600              } else {
1601                  ii = indexOf.call(this._minWeekdaysParse, llc);
1602                  return ii !== -1 ? ii : null;
1603              }
1604          } else {
1605              if (format === 'dddd') {
1606                  ii = indexOf.call(this._weekdaysParse, llc);
1607                  if (ii !== -1) {
1608                      return ii;
1609                  }
1610                  ii = indexOf.call(this._shortWeekdaysParse, llc);
1611                  if (ii !== -1) {
1612                      return ii;
1613                  }
1614                  ii = indexOf.call(this._minWeekdaysParse, llc);
1615                  return ii !== -1 ? ii : null;
1616              } else if (format === 'ddd') {
1617                  ii = indexOf.call(this._shortWeekdaysParse, llc);
1618                  if (ii !== -1) {
1619                      return ii;
1620                  }
1621                  ii = indexOf.call(this._weekdaysParse, llc);
1622                  if (ii !== -1) {
1623                      return ii;
1624                  }
1625                  ii = indexOf.call(this._minWeekdaysParse, llc);
1626                  return ii !== -1 ? ii : null;
1627              } else {
1628                  ii = indexOf.call(this._minWeekdaysParse, llc);
1629                  if (ii !== -1) {
1630                      return ii;
1631                  }
1632                  ii = indexOf.call(this._weekdaysParse, llc);
1633                  if (ii !== -1) {
1634                      return ii;
1635                  }
1636                  ii = indexOf.call(this._shortWeekdaysParse, llc);
1637                  return ii !== -1 ? ii : null;
1638              }
1639          }
1640      }
1641  
1642      function localeWeekdaysParse(weekdayName, format, strict) {
1643          var i, mom, regex;
1644  
1645          if (this._weekdaysParseExact) {
1646              return handleStrictParse$1.call(this, weekdayName, format, strict);
1647          }
1648  
1649          if (!this._weekdaysParse) {
1650              this._weekdaysParse = [];
1651              this._minWeekdaysParse = [];
1652              this._shortWeekdaysParse = [];
1653              this._fullWeekdaysParse = [];
1654          }
1655  
1656          for (i = 0; i < 7; i++) {
1657              // make the regex if we don't have it already
1658  
1659              mom = createUTC([2000, 1]).day(i);
1660              if (strict && !this._fullWeekdaysParse[i]) {
1661                  this._fullWeekdaysParse[i] = new RegExp(
1662                      '^' + this.weekdays(mom, '').replace('.', '\\.?') + '$',
1663                      'i'
1664                  );
1665                  this._shortWeekdaysParse[i] = new RegExp(
1666                      '^' + this.weekdaysShort(mom, '').replace('.', '\\.?') + '$',
1667                      'i'
1668                  );
1669                  this._minWeekdaysParse[i] = new RegExp(
1670                      '^' + this.weekdaysMin(mom, '').replace('.', '\\.?') + '$',
1671                      'i'
1672                  );
1673              }
1674              if (!this._weekdaysParse[i]) {
1675                  regex =
1676                      '^' +
1677                      this.weekdays(mom, '') +
1678                      '|^' +
1679                      this.weekdaysShort(mom, '') +
1680                      '|^' +
1681                      this.weekdaysMin(mom, '');
1682                  this._weekdaysParse[i] = new RegExp(regex.replace('.', ''), 'i');
1683              }
1684              // test the regex
1685              if (
1686                  strict &&
1687                  format === 'dddd' &&
1688                  this._fullWeekdaysParse[i].test(weekdayName)
1689              ) {
1690                  return i;
1691              } else if (
1692                  strict &&
1693                  format === 'ddd' &&
1694                  this._shortWeekdaysParse[i].test(weekdayName)
1695              ) {
1696                  return i;
1697              } else if (
1698                  strict &&
1699                  format === 'dd' &&
1700                  this._minWeekdaysParse[i].test(weekdayName)
1701              ) {
1702                  return i;
1703              } else if (!strict && this._weekdaysParse[i].test(weekdayName)) {
1704                  return i;
1705              }
1706          }
1707      }
1708  
1709      // MOMENTS
1710  
1711      function getSetDayOfWeek(input) {
1712          if (!this.isValid()) {
1713              return input != null ? this : NaN;
1714          }
1715          var day = this._isUTC ? this._d.getUTCDay() : this._d.getDay();
1716          if (input != null) {
1717              input = parseWeekday(input, this.localeData());
1718              return this.add(input - day, 'd');
1719          } else {
1720              return day;
1721          }
1722      }
1723  
1724      function getSetLocaleDayOfWeek(input) {
1725          if (!this.isValid()) {
1726              return input != null ? this : NaN;
1727          }
1728          var weekday = (this.day() + 7 - this.localeData()._week.dow) % 7;
1729          return input == null ? weekday : this.add(input - weekday, 'd');
1730      }
1731  
1732      function getSetISODayOfWeek(input) {
1733          if (!this.isValid()) {
1734              return input != null ? this : NaN;
1735          }
1736  
1737          // behaves the same as moment#day except
1738          // as a getter, returns 7 instead of 0 (1-7 range instead of 0-6)
1739          // as a setter, sunday should belong to the previous week.
1740  
1741          if (input != null) {
1742              var weekday = parseIsoWeekday(input, this.localeData());
1743              return this.day(this.day() % 7 ? weekday : weekday - 7);
1744          } else {
1745              return this.day() || 7;
1746          }
1747      }
1748  
1749      function weekdaysRegex(isStrict) {
1750          if (this._weekdaysParseExact) {
1751              if (!hasOwnProp(this, '_weekdaysRegex')) {
1752                  computeWeekdaysParse.call(this);
1753              }
1754              if (isStrict) {
1755                  return this._weekdaysStrictRegex;
1756              } else {
1757                  return this._weekdaysRegex;
1758              }
1759          } else {
1760              if (!hasOwnProp(this, '_weekdaysRegex')) {
1761                  this._weekdaysRegex = defaultWeekdaysRegex;
1762              }
1763              return this._weekdaysStrictRegex && isStrict
1764                  ? this._weekdaysStrictRegex
1765                  : this._weekdaysRegex;
1766          }
1767      }
1768  
1769      function weekdaysShortRegex(isStrict) {
1770          if (this._weekdaysParseExact) {
1771              if (!hasOwnProp(this, '_weekdaysRegex')) {
1772                  computeWeekdaysParse.call(this);
1773              }
1774              if (isStrict) {
1775                  return this._weekdaysShortStrictRegex;
1776              } else {
1777                  return this._weekdaysShortRegex;
1778              }
1779          } else {
1780              if (!hasOwnProp(this, '_weekdaysShortRegex')) {
1781                  this._weekdaysShortRegex = defaultWeekdaysShortRegex;
1782              }
1783              return this._weekdaysShortStrictRegex && isStrict
1784                  ? this._weekdaysShortStrictRegex
1785                  : this._weekdaysShortRegex;
1786          }
1787      }
1788  
1789      function weekdaysMinRegex(isStrict) {
1790          if (this._weekdaysParseExact) {
1791              if (!hasOwnProp(this, '_weekdaysRegex')) {
1792                  computeWeekdaysParse.call(this);
1793              }
1794              if (isStrict) {
1795                  return this._weekdaysMinStrictRegex;
1796              } else {
1797                  return this._weekdaysMinRegex;
1798              }
1799          } else {
1800              if (!hasOwnProp(this, '_weekdaysMinRegex')) {
1801                  this._weekdaysMinRegex = defaultWeekdaysMinRegex;
1802              }
1803              return this._weekdaysMinStrictRegex && isStrict
1804                  ? this._weekdaysMinStrictRegex
1805                  : this._weekdaysMinRegex;
1806          }
1807      }
1808  
1809      function computeWeekdaysParse() {
1810          function cmpLenRev(a, b) {
1811              return b.length - a.length;
1812          }
1813  
1814          var minPieces = [],
1815              shortPieces = [],
1816              longPieces = [],
1817              mixedPieces = [],
1818              i,
1819              mom,
1820              minp,
1821              shortp,
1822              longp;
1823          for (i = 0; i < 7; i++) {
1824              // make the regex if we don't have it already
1825              mom = createUTC([2000, 1]).day(i);
1826              minp = regexEscape(this.weekdaysMin(mom, ''));
1827              shortp = regexEscape(this.weekdaysShort(mom, ''));
1828              longp = regexEscape(this.weekdays(mom, ''));
1829              minPieces.push(minp);
1830              shortPieces.push(shortp);
1831              longPieces.push(longp);
1832              mixedPieces.push(minp);
1833              mixedPieces.push(shortp);
1834              mixedPieces.push(longp);
1835          }
1836          // Sorting makes sure if one weekday (or abbr) is a prefix of another it
1837          // will match the longer piece.
1838          minPieces.sort(cmpLenRev);
1839          shortPieces.sort(cmpLenRev);
1840          longPieces.sort(cmpLenRev);
1841          mixedPieces.sort(cmpLenRev);
1842  
1843          this._weekdaysRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
1844          this._weekdaysShortRegex = this._weekdaysRegex;
1845          this._weekdaysMinRegex = this._weekdaysRegex;
1846  
1847          this._weekdaysStrictRegex = new RegExp(
1848              '^(' + longPieces.join('|') + ')',
1849              'i'
1850          );
1851          this._weekdaysShortStrictRegex = new RegExp(
1852              '^(' + shortPieces.join('|') + ')',
1853              'i'
1854          );
1855          this._weekdaysMinStrictRegex = new RegExp(
1856              '^(' + minPieces.join('|') + ')',
1857              'i'
1858          );
1859      }
1860  
1861      // FORMATTING
1862  
1863      function hFormat() {
1864          return this.hours() % 12 || 12;
1865      }
1866  
1867      function kFormat() {
1868          return this.hours() || 24;
1869      }
1870  
1871      addFormatToken('H', ['HH', 2], 0, 'hour');
1872      addFormatToken('h', ['hh', 2], 0, hFormat);
1873      addFormatToken('k', ['kk', 2], 0, kFormat);
1874  
1875      addFormatToken('hmm', 0, 0, function () {
1876          return '' + hFormat.apply(this) + zeroFill(this.minutes(), 2);
1877      });
1878  
1879      addFormatToken('hmmss', 0, 0, function () {
1880          return (
1881              '' +
1882              hFormat.apply(this) +
1883              zeroFill(this.minutes(), 2) +
1884              zeroFill(this.seconds(), 2)
1885          );
1886      });
1887  
1888      addFormatToken('Hmm', 0, 0, function () {
1889          return '' + this.hours() + zeroFill(this.minutes(), 2);
1890      });
1891  
1892      addFormatToken('Hmmss', 0, 0, function () {
1893          return (
1894              '' +
1895              this.hours() +
1896              zeroFill(this.minutes(), 2) +
1897              zeroFill(this.seconds(), 2)
1898          );
1899      });
1900  
1901      function meridiem(token, lowercase) {
1902          addFormatToken(token, 0, 0, function () {
1903              return this.localeData().meridiem(
1904                  this.hours(),
1905                  this.minutes(),
1906                  lowercase
1907              );
1908          });
1909      }
1910  
1911      meridiem('a', true);
1912      meridiem('A', false);
1913  
1914      // ALIASES
1915  
1916      addUnitAlias('hour', 'h');
1917  
1918      // PRIORITY
1919      addUnitPriority('hour', 13);
1920  
1921      // PARSING
1922  
1923      function matchMeridiem(isStrict, locale) {
1924          return locale._meridiemParse;
1925      }
1926  
1927      addRegexToken('a', matchMeridiem);
1928      addRegexToken('A', matchMeridiem);
1929      addRegexToken('H', match1to2);
1930      addRegexToken('h', match1to2);
1931      addRegexToken('k', match1to2);
1932      addRegexToken('HH', match1to2, match2);
1933      addRegexToken('hh', match1to2, match2);
1934      addRegexToken('kk', match1to2, match2);
1935  
1936      addRegexToken('hmm', match3to4);
1937      addRegexToken('hmmss', match5to6);
1938      addRegexToken('Hmm', match3to4);
1939      addRegexToken('Hmmss', match5to6);
1940  
1941      addParseToken(['H', 'HH'], HOUR);
1942      addParseToken(['k', 'kk'], function (input, array, config) {
1943          var kInput = toInt(input);
1944          array[HOUR] = kInput === 24 ? 0 : kInput;
1945      });
1946      addParseToken(['a', 'A'], function (input, array, config) {
1947          config._isPm = config._locale.isPM(input);
1948          config._meridiem = input;
1949      });
1950      addParseToken(['h', 'hh'], function (input, array, config) {
1951          array[HOUR] = toInt(input);
1952          getParsingFlags(config).bigHour = true;
1953      });
1954      addParseToken('hmm', function (input, array, config) {
1955          var pos = input.length - 2;
1956          array[HOUR] = toInt(input.substr(0, pos));
1957          array[MINUTE] = toInt(input.substr(pos));
1958          getParsingFlags(config).bigHour = true;
1959      });
1960      addParseToken('hmmss', function (input, array, config) {
1961          var pos1 = input.length - 4,
1962              pos2 = input.length - 2;
1963          array[HOUR] = toInt(input.substr(0, pos1));
1964          array[MINUTE] = toInt(input.substr(pos1, 2));
1965          array[SECOND] = toInt(input.substr(pos2));
1966          getParsingFlags(config).bigHour = true;
1967      });
1968      addParseToken('Hmm', function (input, array, config) {
1969          var pos = input.length - 2;
1970          array[HOUR] = toInt(input.substr(0, pos));
1971          array[MINUTE] = toInt(input.substr(pos));
1972      });
1973      addParseToken('Hmmss', function (input, array, config) {
1974          var pos1 = input.length - 4,
1975              pos2 = input.length - 2;
1976          array[HOUR] = toInt(input.substr(0, pos1));
1977          array[MINUTE] = toInt(input.substr(pos1, 2));
1978          array[SECOND] = toInt(input.substr(pos2));
1979      });
1980  
1981      // LOCALES
1982  
1983      function localeIsPM(input) {
1984          // IE8 Quirks Mode & IE7 Standards Mode do not allow accessing strings like arrays
1985          // Using charAt should be more compatible.
1986          return (input + '').toLowerCase().charAt(0) === 'p';
1987      }
1988  
1989      var defaultLocaleMeridiemParse = /[ap]\.?m?\.?/i,
1990          // Setting the hour should keep the time, because the user explicitly
1991          // specified which hour they want. So trying to maintain the same hour (in
1992          // a new timezone) makes sense. Adding/subtracting hours does not follow
1993          // this rule.
1994          getSetHour = makeGetSet('Hours', true);
1995  
1996      function localeMeridiem(hours, minutes, isLower) {
1997          if (hours > 11) {
1998              return isLower ? 'pm' : 'PM';
1999          } else {
2000              return isLower ? 'am' : 'AM';
2001          }
2002      }
2003  
2004      var baseConfig = {
2005          calendar: defaultCalendar,
2006          longDateFormat: defaultLongDateFormat,
2007          invalidDate: defaultInvalidDate,
2008          ordinal: defaultOrdinal,
2009          dayOfMonthOrdinalParse: defaultDayOfMonthOrdinalParse,
2010          relativeTime: defaultRelativeTime,
2011  
2012          months: defaultLocaleMonths,
2013          monthsShort: defaultLocaleMonthsShort,
2014  
2015          week: defaultLocaleWeek,
2016  
2017          weekdays: defaultLocaleWeekdays,
2018          weekdaysMin: defaultLocaleWeekdaysMin,
2019          weekdaysShort: defaultLocaleWeekdaysShort,
2020  
2021          meridiemParse: defaultLocaleMeridiemParse,
2022      };
2023  
2024      // internal storage for locale config files
2025      var locales = {},
2026          localeFamilies = {},
2027          globalLocale;
2028  
2029      function commonPrefix(arr1, arr2) {
2030          var i,
2031              minl = Math.min(arr1.length, arr2.length);
2032          for (i = 0; i < minl; i += 1) {
2033              if (arr1[i] !== arr2[i]) {
2034                  return i;
2035              }
2036          }
2037          return minl;
2038      }
2039  
2040      function normalizeLocale(key) {
2041          return key ? key.toLowerCase().replace('_', '-') : key;
2042      }
2043  
2044      // pick the locale from the array
2045      // try ['en-au', 'en-gb'] as 'en-au', 'en-gb', 'en', as in move through the list trying each
2046      // substring from most specific to least, but move to the next array item if it's a more specific variant than the current root
2047      function chooseLocale(names) {
2048          var i = 0,
2049              j,
2050              next,
2051              locale,
2052              split;
2053  
2054          while (i < names.length) {
2055              split = normalizeLocale(names[i]).split('-');
2056              j = split.length;
2057              next = normalizeLocale(names[i + 1]);
2058              next = next ? next.split('-') : null;
2059              while (j > 0) {
2060                  locale = loadLocale(split.slice(0, j).join('-'));
2061                  if (locale) {
2062                      return locale;
2063                  }
2064                  if (
2065                      next &&
2066                      next.length >= j &&
2067                      commonPrefix(split, next) >= j - 1
2068                  ) {
2069                      //the next array item is better than a shallower substring of this one
2070                      break;
2071                  }
2072                  j--;
2073              }
2074              i++;
2075          }
2076          return globalLocale;
2077      }
2078  
2079      function loadLocale(name) {
2080          var oldLocale = null,
2081              aliasedRequire;
2082          // TODO: Find a better way to register and load all the locales in Node
2083          if (
2084              locales[name] === undefined &&
2085              typeof module !== 'undefined' &&
2086              module &&
2087              module.exports
2088          ) {
2089              try {
2090                  oldLocale = globalLocale._abbr;
2091                  aliasedRequire = require;
2092                  aliasedRequire('./locale/' + name);
2093                  getSetGlobalLocale(oldLocale);
2094              } catch (e) {
2095                  // mark as not found to avoid repeating expensive file require call causing high CPU
2096                  // when trying to find en-US, en_US, en-us for every format call
2097                  locales[name] = null; // null means not found
2098              }
2099          }
2100          return locales[name];
2101      }
2102  
2103      // This function will load locale and then set the global locale.  If
2104      // no arguments are passed in, it will simply return the current global
2105      // locale key.
2106      function getSetGlobalLocale(key, values) {
2107          var data;
2108          if (key) {
2109              if (isUndefined(values)) {
2110                  data = getLocale(key);
2111              } else {
2112                  data = defineLocale(key, values);
2113              }
2114  
2115              if (data) {
2116                  // moment.duration._locale = moment._locale = data;
2117                  globalLocale = data;
2118              } else {
2119                  if (typeof console !== 'undefined' && console.warn) {
2120                      //warn user if arguments are passed but the locale could not be set
2121                      console.warn(
2122                          'Locale ' + key + ' not found. Did you forget to load it?'
2123                      );
2124                  }
2125              }
2126          }
2127  
2128          return globalLocale._abbr;
2129      }
2130  
2131      function defineLocale(name, config) {
2132          if (config !== null) {
2133              var locale,
2134                  parentConfig = baseConfig;
2135              config.abbr = name;
2136              if (locales[name] != null) {
2137                  deprecateSimple(
2138                      'defineLocaleOverride',
2139                      'use moment.updateLocale(localeName, config) to change ' +
2140                          'an existing locale. moment.defineLocale(localeName, ' +
2141                          'config) should only be used for creating a new locale ' +
2142                          'See http://momentjs.com/guides/#/warnings/define-locale/ for more info.'
2143                  );
2144                  parentConfig = locales[name]._config;
2145              } else if (config.parentLocale != null) {
2146                  if (locales[config.parentLocale] != null) {
2147                      parentConfig = locales[config.parentLocale]._config;
2148                  } else {
2149                      locale = loadLocale(config.parentLocale);
2150                      if (locale != null) {
2151                          parentConfig = locale._config;
2152                      } else {
2153                          if (!localeFamilies[config.parentLocale]) {
2154                              localeFamilies[config.parentLocale] = [];
2155                          }
2156                          localeFamilies[config.parentLocale].push({
2157                              name: name,
2158                              config: config,
2159                          });
2160                          return null;
2161                      }
2162                  }
2163              }
2164              locales[name] = new Locale(mergeConfigs(parentConfig, config));
2165  
2166              if (localeFamilies[name]) {
2167                  localeFamilies[name].forEach(function (x) {
2168                      defineLocale(x.name, x.config);
2169                  });
2170              }
2171  
2172              // backwards compat for now: also set the locale
2173              // make sure we set the locale AFTER all child locales have been
2174              // created, so we won't end up with the child locale set.
2175              getSetGlobalLocale(name);
2176  
2177              return locales[name];
2178          } else {
2179              // useful for testing
2180              delete locales[name];
2181              return null;
2182          }
2183      }
2184  
2185      function updateLocale(name, config) {
2186          if (config != null) {
2187              var locale,
2188                  tmpLocale,
2189                  parentConfig = baseConfig;
2190  
2191              if (locales[name] != null && locales[name].parentLocale != null) {
2192                  // Update existing child locale in-place to avoid memory-leaks
2193                  locales[name].set(mergeConfigs(locales[name]._config, config));
2194              } else {
2195                  // MERGE
2196                  tmpLocale = loadLocale(name);
2197                  if (tmpLocale != null) {
2198                      parentConfig = tmpLocale._config;
2199                  }
2200                  config = mergeConfigs(parentConfig, config);
2201                  if (tmpLocale == null) {
2202                      // updateLocale is called for creating a new locale
2203                      // Set abbr so it will have a name (getters return
2204                      // undefined otherwise).
2205                      config.abbr = name;
2206                  }
2207                  locale = new Locale(config);
2208                  locale.parentLocale = locales[name];
2209                  locales[name] = locale;
2210              }
2211  
2212              // backwards compat for now: also set the locale
2213              getSetGlobalLocale(name);
2214          } else {
2215              // pass null for config to unupdate, useful for tests
2216              if (locales[name] != null) {
2217                  if (locales[name].parentLocale != null) {
2218                      locales[name] = locales[name].parentLocale;
2219                      if (name === getSetGlobalLocale()) {
2220                          getSetGlobalLocale(name);
2221                      }
2222                  } else if (locales[name] != null) {
2223                      delete locales[name];
2224                  }
2225              }
2226          }
2227          return locales[name];
2228      }
2229  
2230      // returns locale data
2231      function getLocale(key) {
2232          var locale;
2233  
2234          if (key && key._locale && key._locale._abbr) {
2235              key = key._locale._abbr;
2236          }
2237  
2238          if (!key) {
2239              return globalLocale;
2240          }
2241  
2242          if (!isArray(key)) {
2243              //short-circuit everything else
2244              locale = loadLocale(key);
2245              if (locale) {
2246                  return locale;
2247              }
2248              key = [key];
2249          }
2250  
2251          return chooseLocale(key);
2252      }
2253  
2254      function listLocales() {
2255          return keys(locales);
2256      }
2257  
2258      function checkOverflow(m) {
2259          var overflow,
2260              a = m._a;
2261  
2262          if (a && getParsingFlags(m).overflow === -2) {
2263              overflow =
2264                  a[MONTH] < 0 || a[MONTH] > 11
2265                      ? MONTH
2266                      : a[DATE] < 1 || a[DATE] > daysInMonth(a[YEAR], a[MONTH])
2267                      ? DATE
2268                      : a[HOUR] < 0 ||
2269                        a[HOUR] > 24 ||
2270                        (a[HOUR] === 24 &&
2271                            (a[MINUTE] !== 0 ||
2272                                a[SECOND] !== 0 ||
2273                                a[MILLISECOND] !== 0))
2274                      ? HOUR
2275                      : a[MINUTE] < 0 || a[MINUTE] > 59
2276                      ? MINUTE
2277                      : a[SECOND] < 0 || a[SECOND] > 59
2278                      ? SECOND
2279                      : a[MILLISECOND] < 0 || a[MILLISECOND] > 999
2280                      ? MILLISECOND
2281                      : -1;
2282  
2283              if (
2284                  getParsingFlags(m)._overflowDayOfYear &&
2285                  (overflow < YEAR || overflow > DATE)
2286              ) {
2287                  overflow = DATE;
2288              }
2289              if (getParsingFlags(m)._overflowWeeks && overflow === -1) {
2290                  overflow = WEEK;
2291              }
2292              if (getParsingFlags(m)._overflowWeekday && overflow === -1) {
2293                  overflow = WEEKDAY;
2294              }
2295  
2296              getParsingFlags(m).overflow = overflow;
2297          }
2298  
2299          return m;
2300      }
2301  
2302      // iso 8601 regex
2303      // 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)
2304      var extendedIsoRegex = /^\s*((?:[+-]\d{6}|\d{4})-(?:\d\d-\d\d|W\d\d-\d|W\d\d|\d\d\d|\d\d))(?:(T| )(\d\d(?::\d\d(?::\d\d(?:[.,]\d+)?)?)?)([+-]\d\d(?::?\d\d)?|\s*Z)?)?$/,
2305          basicIsoRegex = /^\s*((?:[+-]\d{6}|\d{4})(?:\d\d\d\d|W\d\d\d|W\d\d|\d\d\d|\d\d|))(?:(T| )(\d\d(?:\d\d(?:\d\d(?:[.,]\d+)?)?)?)([+-]\d\d(?::?\d\d)?|\s*Z)?)?$/,
2306          tzRegex = /Z|[+-]\d\d(?::?\d\d)?/,
2307          isoDates = [
2308              ['YYYYYY-MM-DD', /[+-]\d{6}-\d\d-\d\d/],
2309              ['YYYY-MM-DD', /\d{4}-\d\d-\d\d/],
2310              ['GGGG-[W]WW-E', /\d{4}-W\d\d-\d/],
2311              ['GGGG-[W]WW', /\d{4}-W\d\d/, false],
2312              ['YYYY-DDD', /\d{4}-\d{3}/],
2313              ['YYYY-MM', /\d{4}-\d\d/, false],
2314              ['YYYYYYMMDD', /[+-]\d{10}/],
2315              ['YYYYMMDD', /\d{8}/],
2316              ['GGGG[W]WWE', /\d{4}W\d{3}/],
2317              ['GGGG[W]WW', /\d{4}W\d{2}/, false],
2318              ['YYYYDDD', /\d{7}/],
2319              ['YYYYMM', /\d{6}/, false],
2320              ['YYYY', /\d{4}/, false],
2321          ],
2322          // iso time formats and regexes
2323          isoTimes = [
2324              ['HH:mm:ss.SSSS', /\d\d:\d\d:\d\d\.\d+/],
2325              ['HH:mm:ss,SSSS', /\d\d:\d\d:\d\d,\d+/],
2326              ['HH:mm:ss', /\d\d:\d\d:\d\d/],
2327              ['HH:mm', /\d\d:\d\d/],
2328              ['HHmmss.SSSS', /\d\d\d\d\d\d\.\d+/],
2329              ['HHmmss,SSSS', /\d\d\d\d\d\d,\d+/],
2330              ['HHmmss', /\d\d\d\d\d\d/],
2331              ['HHmm', /\d\d\d\d/],
2332              ['HH', /\d\d/],
2333          ],
2334          aspNetJsonRegex = /^\/?Date\((-?\d+)/i,
2335          // RFC 2822 regex: For details see https://tools.ietf.org/html/rfc2822#section-3.3
2336          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}))$/,
2337          obsOffsets = {
2338              UT: 0,
2339              GMT: 0,
2340              EDT: -4 * 60,
2341              EST: -5 * 60,
2342              CDT: -5 * 60,
2343              CST: -6 * 60,
2344              MDT: -6 * 60,
2345              MST: -7 * 60,
2346              PDT: -7 * 60,
2347              PST: -8 * 60,
2348          };
2349  
2350      // date from iso format
2351      function configFromISO(config) {
2352          var i,
2353              l,
2354              string = config._i,
2355              match = extendedIsoRegex.exec(string) || basicIsoRegex.exec(string),
2356              allowTime,
2357              dateFormat,
2358              timeFormat,
2359              tzFormat;
2360  
2361          if (match) {
2362              getParsingFlags(config).iso = true;
2363  
2364              for (i = 0, l = isoDates.length; i < l; i++) {
2365                  if (isoDates[i][1].exec(match[1])) {
2366                      dateFormat = isoDates[i][0];
2367                      allowTime = isoDates[i][2] !== false;
2368                      break;
2369                  }
2370              }
2371              if (dateFormat == null) {
2372                  config._isValid = false;
2373                  return;
2374              }
2375              if (match[3]) {
2376                  for (i = 0, l = isoTimes.length; i < l; i++) {
2377                      if (isoTimes[i][1].exec(match[3])) {
2378                          // match[2] should be 'T' or space
2379                          timeFormat = (match[2] || ' ') + isoTimes[i][0];
2380                          break;
2381                      }
2382                  }
2383                  if (timeFormat == null) {
2384                      config._isValid = false;
2385                      return;
2386                  }
2387              }
2388              if (!allowTime && timeFormat != null) {
2389                  config._isValid = false;
2390                  return;
2391              }
2392              if (match[4]) {
2393                  if (tzRegex.exec(match[4])) {
2394                      tzFormat = 'Z';
2395                  } else {
2396                      config._isValid = false;
2397                      return;
2398                  }
2399              }
2400              config._f = dateFormat + (timeFormat || '') + (tzFormat || '');
2401              configFromStringAndFormat(config);
2402          } else {
2403              config._isValid = false;
2404          }
2405      }
2406  
2407      function extractFromRFC2822Strings(
2408          yearStr,
2409          monthStr,
2410          dayStr,
2411          hourStr,
2412          minuteStr,
2413          secondStr
2414      ) {
2415          var result = [
2416              untruncateYear(yearStr),
2417              defaultLocaleMonthsShort.indexOf(monthStr),
2418              parseInt(dayStr, 10),
2419              parseInt(hourStr, 10),
2420              parseInt(minuteStr, 10),
2421          ];
2422  
2423          if (secondStr) {
2424              result.push(parseInt(secondStr, 10));
2425          }
2426  
2427          return result;
2428      }
2429  
2430      function untruncateYear(yearStr) {
2431          var year = parseInt(yearStr, 10);
2432          if (year <= 49) {
2433              return 2000 + year;
2434          } else if (year <= 999) {
2435              return 1900 + year;
2436          }
2437          return year;
2438      }
2439  
2440      function preprocessRFC2822(s) {
2441          // Remove comments and folding whitespace and replace multiple-spaces with a single space
2442          return s
2443              .replace(/\([^)]*\)|[\n\t]/g, ' ')
2444              .replace(/(\s\s+)/g, ' ')
2445              .replace(/^\s\s*/, '')
2446              .replace(/\s\s*$/, '');
2447      }
2448  
2449      function checkWeekday(weekdayStr, parsedInput, config) {
2450          if (weekdayStr) {
2451              // TODO: Replace the vanilla JS Date object with an independent day-of-week check.
2452              var weekdayProvided = defaultLocaleWeekdaysShort.indexOf(weekdayStr),
2453                  weekdayActual = new Date(
2454                      parsedInput[0],
2455                      parsedInput[1],
2456                      parsedInput[2]
2457                  ).getDay();
2458              if (weekdayProvided !== weekdayActual) {
2459                  getParsingFlags(config).weekdayMismatch = true;
2460                  config._isValid = false;
2461                  return false;
2462              }
2463          }
2464          return true;
2465      }
2466  
2467      function calculateOffset(obsOffset, militaryOffset, numOffset) {
2468          if (obsOffset) {
2469              return obsOffsets[obsOffset];
2470          } else if (militaryOffset) {
2471              // the only allowed military tz is Z
2472              return 0;
2473          } else {
2474              var hm = parseInt(numOffset, 10),
2475                  m = hm % 100,
2476                  h = (hm - m) / 100;
2477              return h * 60 + m;
2478          }
2479      }
2480  
2481      // date and time from ref 2822 format
2482      function configFromRFC2822(config) {
2483          var match = rfc2822.exec(preprocessRFC2822(config._i)),
2484              parsedArray;
2485          if (match) {
2486              parsedArray = extractFromRFC2822Strings(
2487                  match[4],
2488                  match[3],
2489                  match[2],
2490                  match[5],
2491                  match[6],
2492                  match[7]
2493              );
2494              if (!checkWeekday(match[1], parsedArray, config)) {
2495                  return;
2496              }
2497  
2498              config._a = parsedArray;
2499              config._tzm = calculateOffset(match[8], match[9], match[10]);
2500  
2501              config._d = createUTCDate.apply(null, config._a);
2502              config._d.setUTCMinutes(config._d.getUTCMinutes() - config._tzm);
2503  
2504              getParsingFlags(config).rfc2822 = true;
2505          } else {
2506              config._isValid = false;
2507          }
2508      }
2509  
2510      // date from 1) ASP.NET, 2) ISO, 3) RFC 2822 formats, or 4) optional fallback if parsing isn't strict
2511      function configFromString(config) {
2512          var matched = aspNetJsonRegex.exec(config._i);
2513          if (matched !== null) {
2514              config._d = new Date(+matched[1]);
2515              return;
2516          }
2517  
2518          configFromISO(config);
2519          if (config._isValid === false) {
2520              delete config._isValid;
2521          } else {
2522              return;
2523          }
2524  
2525          configFromRFC2822(config);
2526          if (config._isValid === false) {
2527              delete config._isValid;
2528          } else {
2529              return;
2530          }
2531  
2532          if (config._strict) {
2533              config._isValid = false;
2534          } else {
2535              // Final attempt, use Input Fallback
2536              hooks.createFromInputFallback(config);
2537          }
2538      }
2539  
2540      hooks.createFromInputFallback = deprecate(
2541          'value provided is not in a recognized RFC2822 or ISO format. moment construction falls back to js Date(), ' +
2542              'which is not reliable across all browsers and versions. Non RFC2822/ISO date formats are ' +
2543              'discouraged and will be removed in an upcoming major release. Please refer to ' +
2544              'http://momentjs.com/guides/#/warnings/js-date/ for more info.',
2545          function (config) {
2546              config._d = new Date(config._i + (config._useUTC ? ' UTC' : ''));
2547          }
2548      );
2549  
2550      // Pick the first defined of two or three arguments.
2551      function defaults(a, b, c) {
2552          if (a != null) {
2553              return a;
2554          }
2555          if (b != null) {
2556              return b;
2557          }
2558          return c;
2559      }
2560  
2561      function currentDateArray(config) {
2562          // hooks is actually the exported moment object
2563          var nowValue = new Date(hooks.now());
2564          if (config._useUTC) {
2565              return [
2566                  nowValue.getUTCFullYear(),
2567                  nowValue.getUTCMonth(),
2568                  nowValue.getUTCDate(),
2569              ];
2570          }
2571          return [nowValue.getFullYear(), nowValue.getMonth(), nowValue.getDate()];
2572      }
2573  
2574      // convert an array to a date.
2575      // the array should mirror the parameters below
2576      // note: all values past the year are optional and will default to the lowest possible value.
2577      // [year, month, day , hour, minute, second, millisecond]
2578      function configFromArray(config) {
2579          var i,
2580              date,
2581              input = [],
2582              currentDate,
2583              expectedWeekday,
2584              yearToUse;
2585  
2586          if (config._d) {
2587              return;
2588          }
2589  
2590          currentDate = currentDateArray(config);
2591  
2592          //compute day of the year from weeks and weekdays
2593          if (config._w && config._a[DATE] == null && config._a[MONTH] == null) {
2594              dayOfYearFromWeekInfo(config);
2595          }
2596  
2597          //if the day of the year is set, figure out what it is
2598          if (config._dayOfYear != null) {
2599              yearToUse = defaults(config._a[YEAR], currentDate[YEAR]);
2600  
2601              if (
2602                  config._dayOfYear > daysInYear(yearToUse) ||
2603                  config._dayOfYear === 0
2604              ) {
2605                  getParsingFlags(config)._overflowDayOfYear = true;
2606              }
2607  
2608              date = createUTCDate(yearToUse, 0, config._dayOfYear);
2609              config._a[MONTH] = date.getUTCMonth();
2610              config._a[DATE] = date.getUTCDate();
2611          }
2612  
2613          // Default to current date.
2614          // * if no year, month, day of month are given, default to today
2615          // * if day of month is given, default month and year
2616          // * if month is given, default only year
2617          // * if year is given, don't default anything
2618          for (i = 0; i < 3 && config._a[i] == null; ++i) {
2619              config._a[i] = input[i] = currentDate[i];
2620          }
2621  
2622          // Zero out whatever was not defaulted, including time
2623          for (; i < 7; i++) {
2624              config._a[i] = input[i] =
2625                  config._a[i] == null ? (i === 2 ? 1 : 0) : config._a[i];
2626          }
2627  
2628          // Check for 24:00:00.000
2629          if (
2630              config._a[HOUR] === 24 &&
2631              config._a[MINUTE] === 0 &&
2632              config._a[SECOND] === 0 &&
2633              config._a[MILLISECOND] === 0
2634          ) {
2635              config._nextDay = true;
2636              config._a[HOUR] = 0;
2637          }
2638  
2639          config._d = (config._useUTC ? createUTCDate : createDate).apply(
2640              null,
2641              input
2642          );
2643          expectedWeekday = config._useUTC
2644              ? config._d.getUTCDay()
2645              : config._d.getDay();
2646  
2647          // Apply timezone offset from input. The actual utcOffset can be changed
2648          // with parseZone.
2649          if (config._tzm != null) {
2650              config._d.setUTCMinutes(config._d.getUTCMinutes() - config._tzm);
2651          }
2652  
2653          if (config._nextDay) {
2654              config._a[HOUR] = 24;
2655          }
2656  
2657          // check for mismatching day of week
2658          if (
2659              config._w &&
2660              typeof config._w.d !== 'undefined' &&
2661              config._w.d !== expectedWeekday
2662          ) {
2663              getParsingFlags(config).weekdayMismatch = true;
2664          }
2665      }
2666  
2667      function dayOfYearFromWeekInfo(config) {
2668          var w, weekYear, week, weekday, dow, doy, temp, weekdayOverflow, curWeek;
2669  
2670          w = config._w;
2671          if (w.GG != null || w.W != null || w.E != null) {
2672              dow = 1;
2673              doy = 4;
2674  
2675              // TODO: We need to take the current isoWeekYear, but that depends on
2676              // how we interpret now (local, utc, fixed offset). So create
2677              // a now version of current config (take local/utc/offset flags, and
2678              // create now).
2679              weekYear = defaults(
2680                  w.GG,
2681                  config._a[YEAR],
2682                  weekOfYear(createLocal(), 1, 4).year
2683              );
2684              week = defaults(w.W, 1);
2685              weekday = defaults(w.E, 1);
2686              if (weekday < 1 || weekday > 7) {
2687                  weekdayOverflow = true;
2688              }
2689          } else {
2690              dow = config._locale._week.dow;
2691              doy = config._locale._week.doy;
2692  
2693              curWeek = weekOfYear(createLocal(), dow, doy);
2694  
2695              weekYear = defaults(w.gg, config._a[YEAR], curWeek.year);
2696  
2697              // Default to current week.
2698              week = defaults(w.w, curWeek.week);
2699  
2700              if (w.d != null) {
2701                  // weekday -- low day numbers are considered next week
2702                  weekday = w.d;
2703                  if (weekday < 0 || weekday > 6) {
2704                      weekdayOverflow = true;
2705                  }
2706              } else if (w.e != null) {
2707                  // local weekday -- counting starts from beginning of week
2708                  weekday = w.e + dow;
2709                  if (w.e < 0 || w.e > 6) {
2710                      weekdayOverflow = true;
2711                  }
2712              } else {
2713                  // default to beginning of week
2714                  weekday = dow;
2715              }
2716          }
2717          if (week < 1 || week > weeksInYear(weekYear, dow, doy)) {
2718              getParsingFlags(config)._overflowWeeks = true;
2719          } else if (weekdayOverflow != null) {
2720              getParsingFlags(config)._overflowWeekday = true;
2721          } else {
2722              temp = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy);
2723              config._a[YEAR] = temp.year;
2724              config._dayOfYear = temp.dayOfYear;
2725          }
2726      }
2727  
2728      // constant that refers to the ISO standard
2729      hooks.ISO_8601 = function () {};
2730  
2731      // constant that refers to the RFC 2822 form
2732      hooks.RFC_2822 = function () {};
2733  
2734      // date from string and format string
2735      function configFromStringAndFormat(config) {
2736          // TODO: Move this to another part of the creation flow to prevent circular deps
2737          if (config._f === hooks.ISO_8601) {
2738              configFromISO(config);
2739              return;
2740          }
2741          if (config._f === hooks.RFC_2822) {
2742              configFromRFC2822(config);
2743              return;
2744          }
2745          config._a = [];
2746          getParsingFlags(config).empty = true;
2747  
2748          // This array is used to make a Date, either with `new Date` or `Date.UTC`
2749          var string = '' + config._i,
2750              i,
2751              parsedInput,
2752              tokens,
2753              token,
2754              skipped,
2755              stringLength = string.length,
2756              totalParsedInputLength = 0,
2757              era;
2758  
2759          tokens =
2760              expandFormat(config._f, config._locale).match(formattingTokens) || [];
2761  
2762          for (i = 0; i < tokens.length; i++) {
2763              token = tokens[i];
2764              parsedInput = (string.match(getParseRegexForToken(token, config)) ||
2765                  [])[0];
2766              if (parsedInput) {
2767                  skipped = string.substr(0, string.indexOf(parsedInput));
2768                  if (skipped.length > 0) {
2769                      getParsingFlags(config).unusedInput.push(skipped);
2770                  }
2771                  string = string.slice(
2772                      string.indexOf(parsedInput) + parsedInput.length
2773                  );
2774                  totalParsedInputLength += parsedInput.length;
2775              }
2776              // don't parse if it's not a known token
2777              if (formatTokenFunctions[token]) {
2778                  if (parsedInput) {
2779                      getParsingFlags(config).empty = false;
2780                  } else {
2781                      getParsingFlags(config).unusedTokens.push(token);
2782                  }
2783                  addTimeToArrayFromToken(token, parsedInput, config);
2784              } else if (config._strict && !parsedInput) {
2785                  getParsingFlags(config).unusedTokens.push(token);
2786              }
2787          }
2788  
2789          // add remaining unparsed input length to the string
2790          getParsingFlags(config).charsLeftOver =
2791              stringLength - totalParsedInputLength;
2792          if (string.length > 0) {
2793              getParsingFlags(config).unusedInput.push(string);
2794          }
2795  
2796          // clear _12h flag if hour is <= 12
2797          if (
2798              config._a[HOUR] <= 12 &&
2799              getParsingFlags(config).bigHour === true &&
2800              config._a[HOUR] > 0
2801          ) {
2802              getParsingFlags(config).bigHour = undefined;
2803          }
2804  
2805          getParsingFlags(config).parsedDateParts = config._a.slice(0);
2806          getParsingFlags(config).meridiem = config._meridiem;
2807          // handle meridiem
2808          config._a[HOUR] = meridiemFixWrap(
2809              config._locale,
2810              config._a[HOUR],
2811              config._meridiem
2812          );
2813  
2814          // handle era
2815          era = getParsingFlags(config).era;
2816          if (era !== null) {
2817              config._a[YEAR] = config._locale.erasConvertYear(era, config._a[YEAR]);
2818          }
2819  
2820          configFromArray(config);
2821          checkOverflow(config);
2822      }
2823  
2824      function meridiemFixWrap(locale, hour, meridiem) {
2825          var isPm;
2826  
2827          if (meridiem == null) {
2828              // nothing to do
2829              return hour;
2830          }
2831          if (locale.meridiemHour != null) {
2832              return locale.meridiemHour(hour, meridiem);
2833          } else if (locale.isPM != null) {
2834              // Fallback
2835              isPm = locale.isPM(meridiem);
2836              if (isPm && hour < 12) {
2837                  hour += 12;
2838              }
2839              if (!isPm && hour === 12) {
2840                  hour = 0;
2841              }
2842              return hour;
2843          } else {
2844              // this is not supposed to happen
2845              return hour;
2846          }
2847      }
2848  
2849      // date from string and array of format strings
2850      function configFromStringAndArray(config) {
2851          var tempConfig,
2852              bestMoment,
2853              scoreToBeat,
2854              i,
2855              currentScore,
2856              validFormatFound,
2857              bestFormatIsValid = false;
2858  
2859          if (config._f.length === 0) {
2860              getParsingFlags(config).invalidFormat = true;
2861              config._d = new Date(NaN);
2862              return;
2863          }
2864  
2865          for (i = 0; i < config._f.length; i++) {
2866              currentScore = 0;
2867              validFormatFound = false;
2868              tempConfig = copyConfig({}, config);
2869              if (config._useUTC != null) {
2870                  tempConfig._useUTC = config._useUTC;
2871              }
2872              tempConfig._f = config._f[i];
2873              configFromStringAndFormat(tempConfig);
2874  
2875              if (isValid(tempConfig)) {
2876                  validFormatFound = true;
2877              }
2878  
2879              // if there is any input that was not parsed add a penalty for that format
2880              currentScore += getParsingFlags(tempConfig).charsLeftOver;
2881  
2882              //or tokens
2883              currentScore += getParsingFlags(tempConfig).unusedTokens.length * 10;
2884  
2885              getParsingFlags(tempConfig).score = currentScore;
2886  
2887              if (!bestFormatIsValid) {
2888                  if (
2889                      scoreToBeat == null ||
2890                      currentScore < scoreToBeat ||
2891                      validFormatFound
2892                  ) {
2893                      scoreToBeat = currentScore;
2894                      bestMoment = tempConfig;
2895                      if (validFormatFound) {
2896                          bestFormatIsValid = true;
2897                      }
2898                  }
2899              } else {
2900                  if (currentScore < scoreToBeat) {
2901                      scoreToBeat = currentScore;
2902                      bestMoment = tempConfig;
2903                  }
2904              }
2905          }
2906  
2907          extend(config, bestMoment || tempConfig);
2908      }
2909  
2910      function configFromObject(config) {
2911          if (config._d) {
2912              return;
2913          }
2914  
2915          var i = normalizeObjectUnits(config._i),
2916              dayOrDate = i.day === undefined ? i.date : i.day;
2917          config._a = map(
2918              [i.year, i.month, dayOrDate, i.hour, i.minute, i.second, i.millisecond],
2919              function (obj) {
2920                  return obj && parseInt(obj, 10);
2921              }
2922          );
2923  
2924          configFromArray(config);
2925      }
2926  
2927      function createFromConfig(config) {
2928          var res = new Moment(checkOverflow(prepareConfig(config)));
2929          if (res._nextDay) {
2930              // Adding is smart enough around DST
2931              res.add(1, 'd');
2932              res._nextDay = undefined;
2933          }
2934  
2935          return res;
2936      }
2937  
2938      function prepareConfig(config) {
2939          var input = config._i,
2940              format = config._f;
2941  
2942          config._locale = config._locale || getLocale(config._l);
2943  
2944          if (input === null || (format === undefined && input === '')) {
2945              return createInvalid({ nullInput: true });
2946          }
2947  
2948          if (typeof input === 'string') {
2949              config._i = input = config._locale.preparse(input);
2950          }
2951  
2952          if (isMoment(input)) {
2953              return new Moment(checkOverflow(input));
2954          } else if (isDate(input)) {
2955              config._d = input;
2956          } else if (isArray(format)) {
2957              configFromStringAndArray(config);
2958          } else if (format) {
2959              configFromStringAndFormat(config);
2960          } else {
2961              configFromInput(config);
2962          }
2963  
2964          if (!isValid(config)) {
2965              config._d = null;
2966          }
2967  
2968          return config;
2969      }
2970  
2971      function configFromInput(config) {
2972          var input = config._i;
2973          if (isUndefined(input)) {
2974              config._d = new Date(hooks.now());
2975          } else if (isDate(input)) {
2976              config._d = new Date(input.valueOf());
2977          } else if (typeof input === 'string') {
2978              configFromString(config);
2979          } else if (isArray(input)) {
2980              config._a = map(input.slice(0), function (obj) {
2981                  return parseInt(obj, 10);
2982              });
2983              configFromArray(config);
2984          } else if (isObject(input)) {
2985              configFromObject(config);
2986          } else if (isNumber(input)) {
2987              // from milliseconds
2988              config._d = new Date(input);
2989          } else {
2990              hooks.createFromInputFallback(config);
2991          }
2992      }
2993  
2994      function createLocalOrUTC(input, format, locale, strict, isUTC) {
2995          var c = {};
2996  
2997          if (format === true || format === false) {
2998              strict = format;
2999              format = undefined;
3000          }
3001  
3002          if (locale === true || locale === false) {
3003              strict = locale;
3004              locale = undefined;
3005          }
3006  
3007          if (
3008              (isObject(input) && isObjectEmpty(input)) ||
3009              (isArray(input) && input.length === 0)
3010          ) {
3011              input = undefined;
3012          }
3013          // object construction must be done this way.
3014          // https://github.com/moment/moment/issues/1423
3015          c._isAMomentObject = true;
3016          c._useUTC = c._isUTC = isUTC;
3017          c._l = locale;
3018          c._i = input;
3019          c._f = format;
3020          c._strict = strict;
3021  
3022          return createFromConfig(c);
3023      }
3024  
3025      function createLocal(input, format, locale, strict) {
3026          return createLocalOrUTC(input, format, locale, strict, false);
3027      }
3028  
3029      var prototypeMin = deprecate(
3030              'moment().min is deprecated, use moment.max instead. http://momentjs.com/guides/#/warnings/min-max/',
3031              function () {
3032                  var other = createLocal.apply(null, arguments);
3033                  if (this.isValid() && other.isValid()) {
3034                      return other < this ? this : other;
3035                  } else {
3036                      return createInvalid();
3037                  }
3038              }
3039          ),
3040          prototypeMax = deprecate(
3041              'moment().max is deprecated, use moment.min instead. http://momentjs.com/guides/#/warnings/min-max/',
3042              function () {
3043                  var other = createLocal.apply(null, arguments);
3044                  if (this.isValid() && other.isValid()) {
3045                      return other > this ? this : other;
3046                  } else {
3047                      return createInvalid();
3048                  }
3049              }
3050          );
3051  
3052      // Pick a moment m from moments so that m[fn](other) is true for all
3053      // other. This relies on the function fn to be transitive.
3054      //
3055      // moments should either be an array of moment objects or an array, whose
3056      // first element is an array of moment objects.
3057      function pickBy(fn, moments) {
3058          var res, i;
3059          if (moments.length === 1 && isArray(moments[0])) {
3060              moments = moments[0];
3061          }
3062          if (!moments.length) {
3063              return createLocal();
3064          }
3065          res = moments[0];
3066          for (i = 1; i < moments.length; ++i) {
3067              if (!moments[i].isValid() || moments[i][fn](res)) {
3068                  res = moments[i];
3069              }
3070          }
3071          return res;
3072      }
3073  
3074      // TODO: Use [].sort instead?
3075      function min() {
3076          var args = [].slice.call(arguments, 0);
3077  
3078          return pickBy('isBefore', args);
3079      }
3080  
3081      function max() {
3082          var args = [].slice.call(arguments, 0);
3083  
3084          return pickBy('isAfter', args);
3085      }
3086  
3087      var now = function () {
3088          return Date.now ? Date.now() : +new Date();
3089      };
3090  
3091      var ordering = [
3092          'year',
3093          'quarter',
3094          'month',
3095          'week',
3096          'day',
3097          'hour',
3098          'minute',
3099          'second',
3100          'millisecond',
3101      ];
3102  
3103      function isDurationValid(m) {
3104          var key,
3105              unitHasDecimal = false,
3106              i;
3107          for (key in m) {
3108              if (
3109                  hasOwnProp(m, key) &&
3110                  !(
3111                      indexOf.call(ordering, key) !== -1 &&
3112                      (m[key] == null || !isNaN(m[key]))
3113                  )
3114              ) {
3115                  return false;
3116              }
3117          }
3118  
3119          for (i = 0; i < ordering.length; ++i) {
3120              if (m[ordering[i]]) {
3121                  if (unitHasDecimal) {
3122                      return false; // only allow non-integers for smallest unit
3123                  }
3124                  if (parseFloat(m[ordering[i]]) !== toInt(m[ordering[i]])) {
3125                      unitHasDecimal = true;
3126                  }
3127              }
3128          }
3129  
3130          return true;
3131      }
3132  
3133      function isValid$1() {
3134          return this._isValid;
3135      }
3136  
3137      function createInvalid$1() {
3138          return createDuration(NaN);
3139      }
3140  
3141      function Duration(duration) {
3142          var normalizedInput = normalizeObjectUnits(duration),
3143              years = normalizedInput.year || 0,
3144              quarters = normalizedInput.quarter || 0,
3145              months = normalizedInput.month || 0,
3146              weeks = normalizedInput.week || normalizedInput.isoWeek || 0,
3147              days = normalizedInput.day || 0,
3148              hours = normalizedInput.hour || 0,
3149              minutes = normalizedInput.minute || 0,
3150              seconds = normalizedInput.second || 0,
3151              milliseconds = normalizedInput.millisecond || 0;
3152  
3153          this._isValid = isDurationValid(normalizedInput);
3154  
3155          // representation for dateAddRemove
3156          this._milliseconds =
3157              +milliseconds +
3158              seconds * 1e3 + // 1000
3159              minutes * 6e4 + // 1000 * 60
3160              hours * 1000 * 60 * 60; //using 1000 * 60 * 60 instead of 36e5 to avoid floating point rounding errors https://github.com/moment/moment/issues/2978
3161          // Because of dateAddRemove treats 24 hours as different from a
3162          // day when working around DST, we need to store them separately
3163          this._days = +days + weeks * 7;
3164          // It is impossible to translate months into days without knowing
3165          // which months you are are talking about, so we have to store
3166          // it separately.
3167          this._months = +months + quarters * 3 + years * 12;
3168  
3169          this._data = {};
3170  
3171          this._locale = getLocale();
3172  
3173          this._bubble();
3174      }
3175  
3176      function isDuration(obj) {
3177          return obj instanceof Duration;
3178      }
3179  
3180      function absRound(number) {
3181          if (number < 0) {
3182              return Math.round(-1 * number) * -1;
3183          } else {
3184              return Math.round(number);
3185          }
3186      }
3187  
3188      // compare two arrays, return the number of differences
3189      function compareArrays(array1, array2, dontConvert) {
3190          var len = Math.min(array1.length, array2.length),
3191              lengthDiff = Math.abs(array1.length - array2.length),
3192              diffs = 0,
3193              i;
3194          for (i = 0; i < len; i++) {
3195              if (
3196                  (dontConvert && array1[i] !== array2[i]) ||
3197                  (!dontConvert && toInt(array1[i]) !== toInt(array2[i]))
3198              ) {
3199                  diffs++;
3200              }
3201          }
3202          return diffs + lengthDiff;
3203      }
3204  
3205      // FORMATTING
3206  
3207      function offset(token, separator) {
3208          addFormatToken(token, 0, 0, function () {
3209              var offset = this.utcOffset(),
3210                  sign = '+';
3211              if (offset < 0) {
3212                  offset = -offset;
3213                  sign = '-';
3214              }
3215              return (
3216                  sign +
3217                  zeroFill(~~(offset / 60), 2) +
3218                  separator +
3219                  zeroFill(~~offset % 60, 2)
3220              );
3221          });
3222      }
3223  
3224      offset('Z', ':');
3225      offset('ZZ', '');
3226  
3227      // PARSING
3228  
3229      addRegexToken('Z', matchShortOffset);
3230      addRegexToken('ZZ', matchShortOffset);
3231      addParseToken(['Z', 'ZZ'], function (input, array, config) {
3232          config._useUTC = true;
3233          config._tzm = offsetFromString(matchShortOffset, input);
3234      });
3235  
3236      // HELPERS
3237  
3238      // timezone chunker
3239      // '+10:00' > ['10',  '00']
3240      // '-1530'  > ['-15', '30']
3241      var chunkOffset = /([\+\-]|\d\d)/gi;
3242  
3243      function offsetFromString(matcher, string) {
3244          var matches = (string || '').match(matcher),
3245              chunk,
3246              parts,
3247              minutes;
3248  
3249          if (matches === null) {
3250              return null;
3251          }
3252  
3253          chunk = matches[matches.length - 1] || [];
3254          parts = (chunk + '').match(chunkOffset) || ['-', 0, 0];
3255          minutes = +(parts[1] * 60) + toInt(parts[2]);
3256  
3257          return minutes === 0 ? 0 : parts[0] === '+' ? minutes : -minutes;
3258      }
3259  
3260      // Return a moment from input, that is local/utc/zone equivalent to model.
3261      function cloneWithOffset(input, model) {
3262          var res, diff;
3263          if (model._isUTC) {
3264              res = model.clone();
3265              diff =
3266                  (isMoment(input) || isDate(input)
3267                      ? input.valueOf()
3268                      : createLocal(input).valueOf()) - res.valueOf();
3269              // Use low-level api, because this fn is low-level api.
3270              res._d.setTime(res._d.valueOf() + diff);
3271              hooks.updateOffset(res, false);
3272              return res;
3273          } else {
3274              return createLocal(input).local();
3275          }
3276      }
3277  
3278      function getDateOffset(m) {
3279          // On Firefox.24 Date#getTimezoneOffset returns a floating point.
3280          // https://github.com/moment/moment/pull/1871
3281          return -Math.round(m._d.getTimezoneOffset());
3282      }
3283  
3284      // HOOKS
3285  
3286      // This function will be called whenever a moment is mutated.
3287      // It is intended to keep the offset in sync with the timezone.
3288      hooks.updateOffset = function () {};
3289  
3290      // MOMENTS
3291  
3292      // keepLocalTime = true means only change the timezone, without
3293      // affecting the local hour. So 5:31:26 +0300 --[utcOffset(2, true)]-->
3294      // 5:31:26 +0200 It is possible that 5:31:26 doesn't exist with offset
3295      // +0200, so we adjust the time as needed, to be valid.
3296      //
3297      // Keeping the time actually adds/subtracts (one hour)
3298      // from the actual represented time. That is why we call updateOffset
3299      // a second time. In case it wants us to change the offset again
3300      // _changeInProgress == true case, then we have to adjust, because
3301      // there is no such time in the given timezone.
3302      function getSetOffset(input, keepLocalTime, keepMinutes) {
3303          var offset = this._offset || 0,
3304              localAdjust;
3305          if (!this.isValid()) {
3306              return input != null ? this : NaN;
3307          }
3308          if (input != null) {
3309              if (typeof input === 'string') {
3310                  input = offsetFromString(matchShortOffset, input);
3311                  if (input === null) {
3312                      return this;
3313                  }
3314              } else if (Math.abs(input) < 16 && !keepMinutes) {
3315                  input = input * 60;
3316              }
3317              if (!this._isUTC && keepLocalTime) {
3318                  localAdjust = getDateOffset(this);
3319              }
3320              this._offset = input;
3321              this._isUTC = true;
3322              if (localAdjust != null) {
3323                  this.add(localAdjust, 'm');
3324              }
3325              if (offset !== input) {
3326                  if (!keepLocalTime || this._changeInProgress) {
3327                      addSubtract(
3328                          this,
3329                          createDuration(input - offset, 'm'),
3330                          1,
3331                          false
3332                      );
3333                  } else if (!this._changeInProgress) {
3334                      this._changeInProgress = true;
3335                      hooks.updateOffset(this, true);
3336                      this._changeInProgress = null;
3337                  }
3338              }
3339              return this;
3340          } else {
3341              return this._isUTC ? offset : getDateOffset(this);
3342          }
3343      }
3344  
3345      function getSetZone(input, keepLocalTime) {
3346          if (input != null) {
3347              if (typeof input !== 'string') {
3348                  input = -input;
3349              }
3350  
3351              this.utcOffset(input, keepLocalTime);
3352  
3353              return this;
3354          } else {
3355              return -this.utcOffset();
3356          }
3357      }
3358  
3359      function setOffsetToUTC(keepLocalTime) {
3360          return this.utcOffset(0, keepLocalTime);
3361      }
3362  
3363      function setOffsetToLocal(keepLocalTime) {
3364          if (this._isUTC) {
3365              this.utcOffset(0, keepLocalTime);
3366              this._isUTC = false;
3367  
3368              if (keepLocalTime) {
3369                  this.subtract(getDateOffset(this), 'm');
3370              }
3371          }
3372          return this;
3373      }
3374  
3375      function setOffsetToParsedOffset() {
3376          if (this._tzm != null) {
3377              this.utcOffset(this._tzm, false, true);
3378          } else if (typeof this._i === 'string') {
3379              var tZone = offsetFromString(matchOffset, this._i);
3380              if (tZone != null) {
3381                  this.utcOffset(tZone);
3382              } else {
3383                  this.utcOffset(0, true);
3384              }
3385          }
3386          return this;
3387      }
3388  
3389      function hasAlignedHourOffset(input) {
3390          if (!this.isValid()) {
3391              return false;
3392          }
3393          input = input ? createLocal(input).utcOffset() : 0;
3394  
3395          return (this.utcOffset() - input) % 60 === 0;
3396      }
3397  
3398      function isDaylightSavingTime() {
3399          return (
3400              this.utcOffset() > this.clone().month(0).utcOffset() ||
3401              this.utcOffset() > this.clone().month(5).utcOffset()
3402          );
3403      }
3404  
3405      function isDaylightSavingTimeShifted() {
3406          if (!isUndefined(this._isDSTShifted)) {
3407              return this._isDSTShifted;
3408          }
3409  
3410          var c = {},
3411              other;
3412  
3413          copyConfig(c, this);
3414          c = prepareConfig(c);
3415  
3416          if (c._a) {
3417              other = c._isUTC ? createUTC(c._a) : createLocal(c._a);
3418              this._isDSTShifted =
3419                  this.isValid() && compareArrays(c._a, other.toArray()) > 0;
3420          } else {
3421              this._isDSTShifted = false;
3422          }
3423  
3424          return this._isDSTShifted;
3425      }
3426  
3427      function isLocal() {
3428          return this.isValid() ? !this._isUTC : false;
3429      }
3430  
3431      function isUtcOffset() {
3432          return this.isValid() ? this._isUTC : false;
3433      }
3434  
3435      function isUtc() {
3436          return this.isValid() ? this._isUTC && this._offset === 0 : false;
3437      }
3438  
3439      // ASP.NET json date format regex
3440      var aspNetRegex = /^(-|\+)?(?:(\d*)[. ])?(\d+):(\d+)(?::(\d+)(\.\d*)?)?$/,
3441          // from http://docs.closure-library.googlecode.com/git/closure_goog_date_date.js.source.html
3442          // somewhat more in line with 4.4.3.2 2004 spec, but allows decimal anywhere
3443          // and further modified to allow for strings containing both week and day
3444          isoRegex = /^(-|\+)?P(?:([-+]?[0-9,.]*)Y)?(?:([-+]?[0-9,.]*)M)?(?:([-+]?[0-9,.]*)W)?(?:([-+]?[0-9,.]*)D)?(?:T(?:([-+]?[0-9,.]*)H)?(?:([-+]?[0-9,.]*)M)?(?:([-+]?[0-9,.]*)S)?)?$/;
3445  
3446      function createDuration(input, key) {
3447          var duration = input,
3448              // matching against regexp is expensive, do it on demand
3449              match = null,
3450              sign,
3451              ret,
3452              diffRes;
3453  
3454          if (isDuration(input)) {
3455              duration = {
3456                  ms: input._milliseconds,
3457                  d: input._days,
3458                  M: input._months,
3459              };
3460          } else if (isNumber(input) || !isNaN(+input)) {
3461              duration = {};
3462              if (key) {
3463                  duration[key] = +input;
3464              } else {
3465                  duration.milliseconds = +input;
3466              }
3467          } else if ((match = aspNetRegex.exec(input))) {
3468              sign = match[1] === '-' ? -1 : 1;
3469              duration = {
3470                  y: 0,
3471                  d: toInt(match[DATE]) * sign,
3472                  h: toInt(match[HOUR]) * sign,
3473                  m: toInt(match[MINUTE]) * sign,
3474                  s: toInt(match[SECOND]) * sign,
3475                  ms: toInt(absRound(match[MILLISECOND] * 1000)) * sign, // the millisecond decimal point is included in the match
3476              };
3477          } else if ((match = isoRegex.exec(input))) {
3478              sign = match[1] === '-' ? -1 : 1;
3479              duration = {
3480                  y: parseIso(match[2], sign),
3481                  M: parseIso(match[3], sign),
3482                  w: parseIso(match[4], sign),
3483                  d: parseIso(match[5], sign),
3484                  h: parseIso(match[6], sign),
3485                  m: parseIso(match[7], sign),
3486                  s: parseIso(match[8], sign),
3487              };
3488          } else if (duration == null) {
3489              // checks for null or undefined
3490              duration = {};
3491          } else if (
3492              typeof duration === 'object' &&
3493              ('from' in duration || 'to' in duration)
3494          ) {
3495              diffRes = momentsDifference(
3496                  createLocal(duration.from),
3497                  createLocal(duration.to)
3498              );
3499  
3500              duration = {};
3501              duration.ms = diffRes.milliseconds;
3502              duration.M = diffRes.months;
3503          }
3504  
3505          ret = new Duration(duration);
3506  
3507          if (isDuration(input) && hasOwnProp(input, '_locale')) {
3508              ret._locale = input._locale;
3509          }
3510  
3511          if (isDuration(input) && hasOwnProp(input, '_isValid')) {
3512              ret._isValid = input._isValid;
3513          }
3514  
3515          return ret;
3516      }
3517  
3518      createDuration.fn = Duration.prototype;
3519      createDuration.invalid = createInvalid$1;
3520  
3521      function parseIso(inp, sign) {
3522          // We'd normally use ~~inp for this, but unfortunately it also
3523          // converts floats to ints.
3524          // inp may be undefined, so careful calling replace on it.
3525          var res = inp && parseFloat(inp.replace(',', '.'));
3526          // apply sign while we're at it
3527          return (isNaN(res) ? 0 : res) * sign;
3528      }
3529  
3530      function positiveMomentsDifference(base, other) {
3531          var res = {};
3532  
3533          res.months =
3534              other.month() - base.month() + (other.year() - base.year()) * 12;
3535          if (base.clone().add(res.months, 'M').isAfter(other)) {
3536              --res.months;
3537          }
3538  
3539          res.milliseconds = +other - +base.clone().add(res.months, 'M');
3540  
3541          return res;
3542      }
3543  
3544      function momentsDifference(base, other) {
3545          var res;
3546          if (!(base.isValid() && other.isValid())) {
3547              return { milliseconds: 0, months: 0 };
3548          }
3549  
3550          other = cloneWithOffset(other, base);
3551          if (base.isBefore(other)) {
3552              res = positiveMomentsDifference(base, other);
3553          } else {
3554              res = positiveMomentsDifference(other, base);
3555              res.milliseconds = -res.milliseconds;
3556              res.months = -res.months;
3557          }
3558  
3559          return res;
3560      }
3561  
3562      // TODO: remove 'name' arg after deprecation is removed
3563      function createAdder(direction, name) {
3564          return function (val, period) {
3565              var dur, tmp;
3566              //invert the arguments, but complain about it
3567              if (period !== null && !isNaN(+period)) {
3568                  deprecateSimple(
3569                      name,
3570                      'moment().' +
3571                          name +
3572                          '(period, number) is deprecated. Please use moment().' +
3573                          name +
3574                          '(number, period). ' +
3575                          'See http://momentjs.com/guides/#/warnings/add-inverted-param/ for more info.'
3576                  );
3577                  tmp = val;
3578                  val = period;
3579                  period = tmp;
3580              }
3581  
3582              dur = createDuration(val, period);
3583              addSubtract(this, dur, direction);
3584              return this;
3585          };
3586      }
3587  
3588      function addSubtract(mom, duration, isAdding, updateOffset) {
3589          var milliseconds = duration._milliseconds,
3590              days = absRound(duration._days),
3591              months = absRound(duration._months);
3592  
3593          if (!mom.isValid()) {
3594              // No op
3595              return;
3596          }
3597  
3598          updateOffset = updateOffset == null ? true : updateOffset;
3599  
3600          if (months) {
3601              setMonth(mom, get(mom, 'Month') + months * isAdding);
3602          }
3603          if (days) {
3604              set$1(mom, 'Date', get(mom, 'Date') + days * isAdding);
3605          }
3606          if (milliseconds) {
3607              mom._d.setTime(mom._d.valueOf() + milliseconds * isAdding);
3608          }
3609          if (updateOffset) {
3610              hooks.updateOffset(mom, days || months);
3611          }
3612      }
3613  
3614      var add = createAdder(1, 'add'),
3615          subtract = createAdder(-1, 'subtract');
3616  
3617      function isString(input) {
3618          return typeof input === 'string' || input instanceof String;
3619      }
3620  
3621      // type MomentInput = Moment | Date | string | number | (number | string)[] | MomentInputObject | void; // null | undefined
3622      function isMomentInput(input) {
3623          return (
3624              isMoment(input) ||
3625              isDate(input) ||
3626              isString(input) ||
3627              isNumber(input) ||
3628              isNumberOrStringArray(input) ||
3629              isMomentInputObject(input) ||
3630              input === null ||
3631              input === undefined
3632          );
3633      }
3634  
3635      function isMomentInputObject(input) {
3636          var objectTest = isObject(input) && !isObjectEmpty(input),
3637              propertyTest = false,
3638              properties = [
3639                  'years',
3640                  'year',
3641                  'y',
3642                  'months',
3643                  'month',
3644                  'M',
3645                  'days',
3646                  'day',
3647                  'd',
3648                  'dates',
3649                  'date',
3650                  'D',
3651                  'hours',
3652                  'hour',
3653                  'h',
3654                  'minutes',
3655                  'minute',
3656                  'm',
3657                  'seconds',
3658                  'second',
3659                  's',
3660                  'milliseconds',
3661                  'millisecond',
3662                  'ms',
3663              ],
3664              i,
3665              property;
3666  
3667          for (i = 0; i < properties.length; i += 1) {
3668              property = properties[i];
3669              propertyTest = propertyTest || hasOwnProp(input, property);
3670          }
3671  
3672          return objectTest && propertyTest;
3673      }
3674  
3675      function isNumberOrStringArray(input) {
3676          var arrayTest = isArray(input),
3677              dataTypeTest = false;
3678          if (arrayTest) {
3679              dataTypeTest =
3680                  input.filter(function (item) {
3681                      return !isNumber(item) && isString(input);
3682                  }).length === 0;
3683          }
3684          return arrayTest && dataTypeTest;
3685      }
3686  
3687      function isCalendarSpec(input) {
3688          var objectTest = isObject(input) && !isObjectEmpty(input),
3689              propertyTest = false,
3690              properties = [
3691                  'sameDay',
3692                  'nextDay',
3693                  'lastDay',
3694                  'nextWeek',
3695                  'lastWeek',
3696                  'sameElse',
3697              ],
3698              i,
3699              property;
3700  
3701          for (i = 0; i < properties.length; i += 1) {
3702              property = properties[i];
3703              propertyTest = propertyTest || hasOwnProp(input, property);
3704          }
3705  
3706          return objectTest && propertyTest;
3707      }
3708  
3709      function getCalendarFormat(myMoment, now) {
3710          var diff = myMoment.diff(now, 'days', true);
3711          return diff < -6
3712              ? 'sameElse'
3713              : diff < -1
3714              ? 'lastWeek'
3715              : diff < 0
3716              ? 'lastDay'
3717              : diff < 1
3718              ? 'sameDay'
3719              : diff < 2
3720              ? 'nextDay'
3721              : diff < 7
3722              ? 'nextWeek'
3723              : 'sameElse';
3724      }
3725  
3726      function calendar$1(time, formats) {
3727          // Support for single parameter, formats only overload to the calendar function
3728          if (arguments.length === 1) {
3729              if (isMomentInput(arguments[0])) {
3730                  time = arguments[0];
3731                  formats = undefined;
3732              } else if (isCalendarSpec(arguments[0])) {
3733                  formats = arguments[0];
3734                  time = undefined;
3735              }
3736          }
3737          // We want to compare the start of today, vs this.
3738          // Getting start-of-today depends on whether we're local/utc/offset or not.
3739          var now = time || createLocal(),
3740              sod = cloneWithOffset(now, this).startOf('day'),
3741              format = hooks.calendarFormat(this, sod) || 'sameElse',
3742              output =
3743                  formats &&
3744                  (isFunction(formats[format])
3745                      ? formats[format].call(this, now)
3746                      : formats[format]);
3747  
3748          return this.format(
3749              output || this.localeData().calendar(format, this, createLocal(now))
3750          );
3751      }
3752  
3753      function clone() {
3754          return new Moment(this);
3755      }
3756  
3757      function isAfter(input, units) {
3758          var localInput = isMoment(input) ? input : createLocal(input);
3759          if (!(this.isValid() && localInput.isValid())) {
3760              return false;
3761          }
3762          units = normalizeUnits(units) || 'millisecond';
3763          if (units === 'millisecond') {
3764              return this.valueOf() > localInput.valueOf();
3765          } else {
3766              return localInput.valueOf() < this.clone().startOf(units).valueOf();
3767          }
3768      }
3769  
3770      function isBefore(input, units) {
3771          var localInput = isMoment(input) ? input : createLocal(input);
3772          if (!(this.isValid() && localInput.isValid())) {
3773              return false;
3774          }
3775          units = normalizeUnits(units) || 'millisecond';
3776          if (units === 'millisecond') {
3777              return this.valueOf() < localInput.valueOf();
3778          } else {
3779              return this.clone().endOf(units).valueOf() < localInput.valueOf();
3780          }
3781      }
3782  
3783      function isBetween(from, to, units, inclusivity) {
3784          var localFrom = isMoment(from) ? from : createLocal(from),
3785              localTo = isMoment(to) ? to : createLocal(to);
3786          if (!(this.isValid() && localFrom.isValid() && localTo.isValid())) {
3787              return false;
3788          }
3789          inclusivity = inclusivity || '()';
3790          return (
3791              (inclusivity[0] === '('
3792                  ? this.isAfter(localFrom, units)
3793                  : !this.isBefore(localFrom, units)) &&
3794              (inclusivity[1] === ')'
3795                  ? this.isBefore(localTo, units)
3796                  : !this.isAfter(localTo, units))
3797          );
3798      }
3799  
3800      function isSame(input, units) {
3801          var localInput = isMoment(input) ? input : createLocal(input),
3802              inputMs;
3803          if (!(this.isValid() && localInput.isValid())) {
3804              return false;
3805          }
3806          units = normalizeUnits(units) || 'millisecond';
3807          if (units === 'millisecond') {
3808              return this.valueOf() === localInput.valueOf();
3809          } else {
3810              inputMs = localInput.valueOf();
3811              return (
3812                  this.clone().startOf(units).valueOf() <= inputMs &&
3813                  inputMs <= this.clone().endOf(units).valueOf()
3814              );
3815          }
3816      }
3817  
3818      function isSameOrAfter(input, units) {
3819          return this.isSame(input, units) || this.isAfter(input, units);
3820      }
3821  
3822      function isSameOrBefore(input, units) {
3823          return this.isSame(input, units) || this.isBefore(input, units);
3824      }
3825  
3826      function diff(input, units, asFloat) {
3827          var that, zoneDelta, output;
3828  
3829          if (!this.isValid()) {
3830              return NaN;
3831          }
3832  
3833          that = cloneWithOffset(input, this);
3834  
3835          if (!that.isValid()) {
3836              return NaN;
3837          }
3838  
3839          zoneDelta = (that.utcOffset() - this.utcOffset()) * 6e4;
3840  
3841          units = normalizeUnits(units);
3842  
3843          switch (units) {
3844              case 'year':
3845                  output = monthDiff(this, that) / 12;
3846                  break;
3847              case 'month':
3848                  output = monthDiff(this, that);
3849                  break;
3850              case 'quarter':
3851                  output = monthDiff(this, that) / 3;
3852                  break;
3853              case 'second':
3854                  output = (this - that) / 1e3;
3855                  break; // 1000
3856              case 'minute':
3857                  output = (this - that) / 6e4;
3858                  break; // 1000 * 60
3859              case 'hour':
3860                  output = (this - that) / 36e5;
3861                  break; // 1000 * 60 * 60
3862              case 'day':
3863                  output = (this - that - zoneDelta) / 864e5;
3864                  break; // 1000 * 60 * 60 * 24, negate dst
3865              case 'week':
3866                  output = (this - that - zoneDelta) / 6048e5;
3867                  break; // 1000 * 60 * 60 * 24 * 7, negate dst
3868              default:
3869                  output = this - that;
3870          }
3871  
3872          return asFloat ? output : absFloor(output);
3873      }
3874  
3875      function monthDiff(a, b) {
3876          if (a.date() < b.date()) {
3877              // end-of-month calculations work correct when the start month has more
3878              // days than the end month.
3879              return -monthDiff(b, a);
3880          }
3881          // difference in months
3882          var wholeMonthDiff = (b.year() - a.year()) * 12 + (b.month() - a.month()),
3883              // b is in (anchor - 1 month, anchor + 1 month)
3884              anchor = a.clone().add(wholeMonthDiff, 'months'),
3885              anchor2,
3886              adjust;
3887  
3888          if (b - anchor < 0) {
3889              anchor2 = a.clone().add(wholeMonthDiff - 1, 'months');
3890              // linear across the month
3891              adjust = (b - anchor) / (anchor - anchor2);
3892          } else {
3893              anchor2 = a.clone().add(wholeMonthDiff + 1, 'months');
3894              // linear across the month
3895              adjust = (b - anchor) / (anchor2 - anchor);
3896          }
3897  
3898          //check for negative zero, return zero if negative zero
3899          return -(wholeMonthDiff + adjust) || 0;
3900      }
3901  
3902      hooks.defaultFormat = 'YYYY-MM-DDTHH:mm:ssZ';
3903      hooks.defaultFormatUtc = 'YYYY-MM-DDTHH:mm:ss[Z]';
3904  
3905      function toString() {
3906          return this.clone().locale('en').format('ddd MMM DD YYYY HH:mm:ss [GMT]ZZ');
3907      }
3908  
3909      function toISOString(keepOffset) {
3910          if (!this.isValid()) {
3911              return null;
3912          }
3913          var utc = keepOffset !== true,
3914              m = utc ? this.clone().utc() : this;
3915          if (m.year() < 0 || m.year() > 9999) {
3916              return formatMoment(
3917                  m,
3918                  utc
3919                      ? 'YYYYYY-MM-DD[T]HH:mm:ss.SSS[Z]'
3920                      : 'YYYYYY-MM-DD[T]HH:mm:ss.SSSZ'
3921              );
3922          }
3923          if (isFunction(Date.prototype.toISOString)) {
3924              // native implementation is ~50x faster, use it when we can
3925              if (utc) {
3926                  return this.toDate().toISOString();
3927              } else {
3928                  return new Date(this.valueOf() + this.utcOffset() * 60 * 1000)
3929                      .toISOString()
3930                      .replace('Z', formatMoment(m, 'Z'));
3931              }
3932          }
3933          return formatMoment(
3934              m,
3935              utc ? 'YYYY-MM-DD[T]HH:mm:ss.SSS[Z]' : 'YYYY-MM-DD[T]HH:mm:ss.SSSZ'
3936          );
3937      }
3938  
3939      /**
3940       * Return a human readable representation of a moment that can
3941       * also be evaluated to get a new moment which is the same
3942       *
3943       * @link https://nodejs.org/dist/latest/docs/api/util.html#util_custom_inspect_function_on_objects
3944       */
3945      function inspect() {
3946          if (!this.isValid()) {
3947              return 'moment.invalid(/* ' + this._i + ' */)';
3948          }
3949          var func = 'moment',
3950              zone = '',
3951              prefix,
3952              year,
3953              datetime,
3954              suffix;
3955          if (!this.isLocal()) {
3956              func = this.utcOffset() === 0 ? 'moment.utc' : 'moment.parseZone';
3957              zone = 'Z';
3958          }
3959          prefix = '[' + func + '("]';
3960          year = 0 <= this.year() && this.year() <= 9999 ? 'YYYY' : 'YYYYYY';
3961          datetime = '-MM-DD[T]HH:mm:ss.SSS';
3962          suffix = zone + '[")]';
3963  
3964          return this.format(prefix + year + datetime + suffix);
3965      }
3966  
3967      function format(inputString) {
3968          if (!inputString) {
3969              inputString = this.isUtc()
3970                  ? hooks.defaultFormatUtc
3971                  : hooks.defaultFormat;
3972          }
3973          var output = formatMoment(this, inputString);
3974          return this.localeData().postformat(output);
3975      }
3976  
3977      function from(time, withoutSuffix) {
3978          if (
3979              this.isValid() &&
3980              ((isMoment(time) && time.isValid()) || createLocal(time).isValid())
3981          ) {
3982              return createDuration({ to: this, from: time })
3983                  .locale(this.locale())
3984                  .humanize(!withoutSuffix);
3985          } else {
3986              return this.localeData().invalidDate();
3987          }
3988      }
3989  
3990      function fromNow(withoutSuffix) {
3991          return this.from(createLocal(), withoutSuffix);
3992      }
3993  
3994      function to(time, withoutSuffix) {
3995          if (
3996              this.isValid() &&
3997              ((isMoment(time) && time.isValid()) || createLocal(time).isValid())
3998          ) {
3999              return createDuration({ from: this, to: time })
4000                  .locale(this.locale())
4001                  .humanize(!withoutSuffix);
4002          } else {
4003              return this.localeData().invalidDate();
4004          }
4005      }
4006  
4007      function toNow(withoutSuffix) {
4008          return this.to(createLocal(), withoutSuffix);
4009      }
4010  
4011      // If passed a locale key, it will set the locale for this
4012      // instance.  Otherwise, it will return the locale configuration
4013      // variables for this instance.
4014      function locale(key) {
4015          var newLocaleData;
4016  
4017          if (key === undefined) {
4018              return this._locale._abbr;
4019          } else {
4020              newLocaleData = getLocale(key);
4021              if (newLocaleData != null) {
4022                  this._locale = newLocaleData;
4023              }
4024              return this;
4025          }
4026      }
4027  
4028      var lang = deprecate(
4029          'moment().lang() is deprecated. Instead, use moment().localeData() to get the language configuration. Use moment().locale() to change languages.',
4030          function (key) {
4031              if (key === undefined) {
4032                  return this.localeData();
4033              } else {
4034                  return this.locale(key);
4035              }
4036          }
4037      );
4038  
4039      function localeData() {
4040          return this._locale;
4041      }
4042  
4043      var MS_PER_SECOND = 1000,
4044          MS_PER_MINUTE = 60 * MS_PER_SECOND,
4045          MS_PER_HOUR = 60 * MS_PER_MINUTE,
4046          MS_PER_400_YEARS = (365 * 400 + 97) * 24 * MS_PER_HOUR;
4047  
4048      // actual modulo - handles negative numbers (for dates before 1970):
4049      function mod$1(dividend, divisor) {
4050          return ((dividend % divisor) + divisor) % divisor;
4051      }
4052  
4053      function localStartOfDate(y, m, d) {
4054          // the date constructor remaps years 0-99 to 1900-1999
4055          if (y < 100 && y >= 0) {
4056              // preserve leap years using a full 400 year cycle, then reset
4057              return new Date(y + 400, m, d) - MS_PER_400_YEARS;
4058          } else {
4059              return new Date(y, m, d).valueOf();
4060          }
4061      }
4062  
4063      function utcStartOfDate(y, m, d) {
4064          // Date.UTC remaps years 0-99 to 1900-1999
4065          if (y < 100 && y >= 0) {
4066              // preserve leap years using a full 400 year cycle, then reset
4067              return Date.UTC(y + 400, m, d) - MS_PER_400_YEARS;
4068          } else {
4069              return Date.UTC(y, m, d);
4070          }
4071      }
4072  
4073      function startOf(units) {
4074          var time, startOfDate;
4075          units = normalizeUnits(units);
4076          if (units === undefined || units === 'millisecond' || !this.isValid()) {
4077              return this;
4078          }
4079  
4080          startOfDate = this._isUTC ? utcStartOfDate : localStartOfDate;
4081  
4082          switch (units) {
4083              case 'year':
4084                  time = startOfDate(this.year(), 0, 1);
4085                  break;
4086              case 'quarter':
4087                  time = startOfDate(
4088                      this.year(),
4089                      this.month() - (this.month() % 3),
4090                      1
4091                  );
4092                  break;
4093              case 'month':
4094                  time = startOfDate(this.year(), this.month(), 1);
4095                  break;
4096              case 'week':
4097                  time = startOfDate(
4098                      this.year(),
4099                      this.month(),
4100                      this.date() - this.weekday()
4101                  );
4102                  break;
4103              case 'isoWeek':
4104                  time = startOfDate(
4105                      this.year(),
4106                      this.month(),
4107                      this.date() - (this.isoWeekday() - 1)
4108                  );
4109                  break;
4110              case 'day':
4111              case 'date':
4112                  time = startOfDate(this.year(), this.month(), this.date());
4113                  break;
4114              case 'hour':
4115                  time = this._d.valueOf();
4116                  time -= mod$1(
4117                      time + (this._isUTC ? 0 : this.utcOffset() * MS_PER_MINUTE),
4118                      MS_PER_HOUR
4119                  );
4120                  break;
4121              case 'minute':
4122                  time = this._d.valueOf();
4123                  time -= mod$1(time, MS_PER_MINUTE);
4124                  break;
4125              case 'second':
4126                  time = this._d.valueOf();
4127                  time -= mod$1(time, MS_PER_SECOND);
4128                  break;
4129          }
4130  
4131          this._d.setTime(time);
4132          hooks.updateOffset(this, true);
4133          return this;
4134      }
4135  
4136      function endOf(units) {
4137          var time, startOfDate;
4138          units = normalizeUnits(units);
4139          if (units === undefined || units === 'millisecond' || !this.isValid()) {
4140              return this;
4141          }
4142  
4143          startOfDate = this._isUTC ? utcStartOfDate : localStartOfDate;
4144  
4145          switch (units) {
4146              case 'year':
4147                  time = startOfDate(this.year() + 1, 0, 1) - 1;
4148                  break;
4149              case 'quarter':
4150                  time =
4151                      startOfDate(
4152                          this.year(),
4153                          this.month() - (this.month() % 3) + 3,
4154                          1
4155                      ) - 1;
4156                  break;
4157              case 'month':
4158                  time = startOfDate(this.year(), this.month() + 1, 1) - 1;
4159                  break;
4160              case 'week':
4161                  time =
4162                      startOfDate(
4163                          this.year(),
4164                          this.month(),
4165                          this.date() - this.weekday() + 7
4166                      ) - 1;
4167                  break;
4168              case 'isoWeek':
4169                  time =
4170                      startOfDate(
4171                          this.year(),
4172                          this.month(),
4173                          this.date() - (this.isoWeekday() - 1) + 7
4174                      ) - 1;
4175                  break;
4176              case 'day':
4177              case 'date':
4178                  time = startOfDate(this.year(), this.month(), this.date() + 1) - 1;
4179                  break;
4180              case 'hour':
4181                  time = this._d.valueOf();
4182                  time +=
4183                      MS_PER_HOUR -
4184                      mod$1(
4185                          time + (this._isUTC ? 0 : this.utcOffset() * MS_PER_MINUTE),
4186                          MS_PER_HOUR
4187                      ) -
4188                      1;
4189                  break;
4190              case 'minute':
4191                  time = this._d.valueOf();
4192                  time += MS_PER_MINUTE - mod$1(time, MS_PER_MINUTE) - 1;
4193                  break;
4194              case 'second':
4195                  time = this._d.valueOf();
4196                  time += MS_PER_SECOND - mod$1(time, MS_PER_SECOND) - 1;
4197                  break;
4198          }
4199  
4200          this._d.setTime(time);
4201          hooks.updateOffset(this, true);
4202          return this;
4203      }
4204  
4205      function valueOf() {
4206          return this._d.valueOf() - (this._offset || 0) * 60000;
4207      }
4208  
4209      function unix() {
4210          return Math.floor(this.valueOf() / 1000);
4211      }
4212  
4213      function toDate() {
4214          return new Date(this.valueOf());
4215      }
4216  
4217      function toArray() {
4218          var m = this;
4219          return [
4220              m.year(),
4221              m.month(),
4222              m.date(),
4223              m.hour(),
4224              m.minute(),
4225              m.second(),
4226              m.millisecond(),
4227          ];
4228      }
4229  
4230      function toObject() {
4231          var m = this;
4232          return {
4233              years: m.year(),
4234              months: m.month(),
4235              date: m.date(),
4236              hours: m.hours(),
4237              minutes: m.minutes(),
4238              seconds: m.seconds(),
4239              milliseconds: m.milliseconds(),
4240          };
4241      }
4242  
4243      function toJSON() {
4244          // new Date(NaN).toJSON() === null
4245          return this.isValid() ? this.toISOString() : null;
4246      }
4247  
4248      function isValid$2() {
4249          return isValid(this);
4250      }
4251  
4252      function parsingFlags() {
4253          return extend({}, getParsingFlags(this));
4254      }
4255  
4256      function invalidAt() {
4257          return getParsingFlags(this).overflow;
4258      }
4259  
4260      function creationData() {
4261          return {
4262              input: this._i,
4263              format: this._f,
4264              locale: this._locale,
4265              isUTC: this._isUTC,
4266              strict: this._strict,
4267          };
4268      }
4269  
4270      addFormatToken('N', 0, 0, 'eraAbbr');
4271      addFormatToken('NN', 0, 0, 'eraAbbr');
4272      addFormatToken('NNN', 0, 0, 'eraAbbr');
4273      addFormatToken('NNNN', 0, 0, 'eraName');
4274      addFormatToken('NNNNN', 0, 0, 'eraNarrow');
4275  
4276      addFormatToken('y', ['y', 1], 'yo', 'eraYear');
4277      addFormatToken('y', ['yy', 2], 0, 'eraYear');
4278      addFormatToken('y', ['yyy', 3], 0, 'eraYear');
4279      addFormatToken('y', ['yyyy', 4], 0, 'eraYear');
4280  
4281      addRegexToken('N', matchEraAbbr);
4282      addRegexToken('NN', matchEraAbbr);
4283      addRegexToken('NNN', matchEraAbbr);
4284      addRegexToken('NNNN', matchEraName);
4285      addRegexToken('NNNNN', matchEraNarrow);
4286  
4287      addParseToken(['N', 'NN', 'NNN', 'NNNN', 'NNNNN'], function (
4288          input,
4289          array,
4290          config,
4291          token
4292      ) {
4293          var era = config._locale.erasParse(input, token, config._strict);
4294          if (era) {
4295              getParsingFlags(config).era = era;
4296          } else {
4297              getParsingFlags(config).invalidEra = input;
4298          }
4299      });
4300  
4301      addRegexToken('y', matchUnsigned);
4302      addRegexToken('yy', matchUnsigned);
4303      addRegexToken('yyy', matchUnsigned);
4304      addRegexToken('yyyy', matchUnsigned);
4305      addRegexToken('yo', matchEraYearOrdinal);
4306  
4307      addParseToken(['y', 'yy', 'yyy', 'yyyy'], YEAR);
4308      addParseToken(['yo'], function (input, array, config, token) {
4309          var match;
4310          if (config._locale._eraYearOrdinalRegex) {
4311              match = input.match(config._locale._eraYearOrdinalRegex);
4312          }
4313  
4314          if (config._locale.eraYearOrdinalParse) {
4315              array[YEAR] = config._locale.eraYearOrdinalParse(input, match);
4316          } else {
4317              array[YEAR] = parseInt(input, 10);
4318          }
4319      });
4320  
4321      function localeEras(m, format) {
4322          var i,
4323              l,
4324              date,
4325              eras = this._eras || getLocale('en')._eras;
4326          for (i = 0, l = eras.length; i < l; ++i) {
4327              switch (typeof eras[i].since) {
4328                  case 'string':
4329                      // truncate time
4330                      date = hooks(eras[i].since).startOf('day');
4331                      eras[i].since = date.valueOf();
4332                      break;
4333              }
4334  
4335              switch (typeof eras[i].until) {
4336                  case 'undefined':
4337                      eras[i].until = +Infinity;
4338                      break;
4339                  case 'string':
4340                      // truncate time
4341                      date = hooks(eras[i].until).startOf('day').valueOf();
4342                      eras[i].until = date.valueOf();
4343                      break;
4344              }
4345          }
4346          return eras;
4347      }
4348  
4349      function localeErasParse(eraName, format, strict) {
4350          var i,
4351              l,
4352              eras = this.eras(),
4353              name,
4354              abbr,
4355              narrow;
4356          eraName = eraName.toUpperCase();
4357  
4358          for (i = 0, l = eras.length; i < l; ++i) {
4359              name = eras[i].name.toUpperCase();
4360              abbr = eras[i].abbr.toUpperCase();
4361              narrow = eras[i].narrow.toUpperCase();
4362  
4363              if (strict) {
4364                  switch (format) {
4365                      case 'N':
4366                      case 'NN':
4367                      case 'NNN':
4368                          if (abbr === eraName) {
4369                              return eras[i];
4370                          }
4371                          break;
4372  
4373                      case 'NNNN':
4374                          if (name === eraName) {
4375                              return eras[i];
4376                          }
4377                          break;
4378  
4379                      case 'NNNNN':
4380                          if (narrow === eraName) {
4381                              return eras[i];
4382                          }
4383                          break;
4384                  }
4385              } else if ([name, abbr, narrow].indexOf(eraName) >= 0) {
4386                  return eras[i];
4387              }
4388          }
4389      }
4390  
4391      function localeErasConvertYear(era, year) {
4392          var dir = era.since <= era.until ? +1 : -1;
4393          if (year === undefined) {
4394              return hooks(era.since).year();
4395          } else {
4396              return hooks(era.since).year() + (year - era.offset) * dir;
4397          }
4398      }
4399  
4400      function getEraName() {
4401          var i,
4402              l,
4403              val,
4404              eras = this.localeData().eras();
4405          for (i = 0, l = eras.length; i < l; ++i) {
4406              // truncate time
4407              val = this.startOf('day').valueOf();
4408  
4409              if (eras[i].since <= val && val <= eras[i].until) {
4410                  return eras[i].name;
4411              }
4412              if (eras[i].until <= val && val <= eras[i].since) {
4413                  return eras[i].name;
4414              }
4415          }
4416  
4417          return '';
4418      }
4419  
4420      function getEraNarrow() {
4421          var i,
4422              l,
4423              val,
4424              eras = this.localeData().eras();
4425          for (i = 0, l = eras.length; i < l; ++i) {
4426              // truncate time
4427              val = this.startOf('day').valueOf();
4428  
4429              if (eras[i].since <= val && val <= eras[i].until) {
4430                  return eras[i].narrow;
4431              }
4432              if (eras[i].until <= val && val <= eras[i].since) {
4433                  return eras[i].narrow;
4434              }
4435          }
4436  
4437          return '';
4438      }
4439  
4440      function getEraAbbr() {
4441          var i,
4442              l,
4443              val,
4444              eras = this.localeData().eras();
4445          for (i = 0, l = eras.length; i < l; ++i) {
4446              // truncate time
4447              val = this.startOf('day').valueOf();
4448  
4449              if (eras[i].since <= val && val <= eras[i].until) {
4450                  return eras[i].abbr;
4451              }
4452              if (eras[i].until <= val && val <= eras[i].since) {
4453                  return eras[i].abbr;
4454              }
4455          }
4456  
4457          return '';
4458      }
4459  
4460      function getEraYear() {
4461          var i,
4462              l,
4463              dir,
4464              val,
4465              eras = this.localeData().eras();
4466          for (i = 0, l = eras.length; i < l; ++i) {
4467              dir = eras[i].since <= eras[i].until ? +1 : -1;
4468  
4469              // truncate time
4470              val = this.startOf('day').valueOf();
4471  
4472              if (
4473                  (eras[i].since <= val && val <= eras[i].until) ||
4474                  (eras[i].until <= val && val <= eras[i].since)
4475              ) {
4476                  return (
4477                      (this.year() - hooks(eras[i].since).year()) * dir +
4478                      eras[i].offset
4479                  );
4480              }
4481          }
4482  
4483          return this.year();
4484      }
4485  
4486      function erasNameRegex(isStrict) {
4487          if (!hasOwnProp(this, '_erasNameRegex')) {
4488              computeErasParse.call(this);
4489          }
4490          return isStrict ? this._erasNameRegex : this._erasRegex;
4491      }
4492  
4493      function erasAbbrRegex(isStrict) {
4494          if (!hasOwnProp(this, '_erasAbbrRegex')) {
4495              computeErasParse.call(this);
4496          }
4497          return isStrict ? this._erasAbbrRegex : this._erasRegex;
4498      }
4499  
4500      function erasNarrowRegex(isStrict) {
4501          if (!hasOwnProp(this, '_erasNarrowRegex')) {
4502              computeErasParse.call(this);
4503          }
4504          return isStrict ? this._erasNarrowRegex : this._erasRegex;
4505      }
4506  
4507      function matchEraAbbr(isStrict, locale) {
4508          return locale.erasAbbrRegex(isStrict);
4509      }
4510  
4511      function matchEraName(isStrict, locale) {
4512          return locale.erasNameRegex(isStrict);
4513      }
4514  
4515      function matchEraNarrow(isStrict, locale) {
4516          return locale.erasNarrowRegex(isStrict);
4517      }
4518  
4519      function matchEraYearOrdinal(isStrict, locale) {
4520          return locale._eraYearOrdinalRegex || matchUnsigned;
4521      }
4522  
4523      function computeErasParse() {
4524          var abbrPieces = [],
4525              namePieces = [],
4526              narrowPieces = [],
4527              mixedPieces = [],
4528              i,
4529              l,
4530              eras = this.eras();
4531  
4532          for (i = 0, l = eras.length; i < l; ++i) {
4533              namePieces.push(regexEscape(eras[i].name));
4534              abbrPieces.push(regexEscape(eras[i].abbr));
4535              narrowPieces.push(regexEscape(eras[i].narrow));
4536  
4537              mixedPieces.push(regexEscape(eras[i].name));
4538              mixedPieces.push(regexEscape(eras[i].abbr));
4539              mixedPieces.push(regexEscape(eras[i].narrow));
4540          }
4541  
4542          this._erasRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
4543          this._erasNameRegex = new RegExp('^(' + namePieces.join('|') + ')', 'i');
4544          this._erasAbbrRegex = new RegExp('^(' + abbrPieces.join('|') + ')', 'i');
4545          this._erasNarrowRegex = new RegExp(
4546              '^(' + narrowPieces.join('|') + ')',
4547              'i'
4548          );
4549      }
4550  
4551      // FORMATTING
4552  
4553      addFormatToken(0, ['gg', 2], 0, function () {
4554          return this.weekYear() % 100;
4555      });
4556  
4557      addFormatToken(0, ['GG', 2], 0, function () {
4558          return this.isoWeekYear() % 100;
4559      });
4560  
4561      function addWeekYearFormatToken(token, getter) {
4562          addFormatToken(0, [token, token.length], 0, getter);
4563      }
4564  
4565      addWeekYearFormatToken('gggg', 'weekYear');
4566      addWeekYearFormatToken('ggggg', 'weekYear');
4567      addWeekYearFormatToken('GGGG', 'isoWeekYear');
4568      addWeekYearFormatToken('GGGGG', 'isoWeekYear');
4569  
4570      // ALIASES
4571  
4572      addUnitAlias('weekYear', 'gg');
4573      addUnitAlias('isoWeekYear', 'GG');
4574  
4575      // PRIORITY
4576  
4577      addUnitPriority('weekYear', 1);
4578      addUnitPriority('isoWeekYear', 1);
4579  
4580      // PARSING
4581  
4582      addRegexToken('G', matchSigned);
4583      addRegexToken('g', matchSigned);
4584      addRegexToken('GG', match1to2, match2);
4585      addRegexToken('gg', match1to2, match2);
4586      addRegexToken('GGGG', match1to4, match4);
4587      addRegexToken('gggg', match1to4, match4);
4588      addRegexToken('GGGGG', match1to6, match6);
4589      addRegexToken('ggggg', match1to6, match6);
4590  
4591      addWeekParseToken(['gggg', 'ggggg', 'GGGG', 'GGGGG'], function (
4592          input,
4593          week,
4594          config,
4595          token
4596      ) {
4597          week[token.substr(0, 2)] = toInt(input);
4598      });
4599  
4600      addWeekParseToken(['gg', 'GG'], function (input, week, config, token) {
4601          week[token] = hooks.parseTwoDigitYear(input);
4602      });
4603  
4604      // MOMENTS
4605  
4606      function getSetWeekYear(input) {
4607          return getSetWeekYearHelper.call(
4608              this,
4609              input,
4610              this.week(),
4611              this.weekday(),
4612              this.localeData()._week.dow,
4613              this.localeData()._week.doy
4614          );
4615      }
4616  
4617      function getSetISOWeekYear(input) {
4618          return getSetWeekYearHelper.call(
4619              this,
4620              input,
4621              this.isoWeek(),
4622              this.isoWeekday(),
4623              1,
4624              4
4625          );
4626      }
4627  
4628      function getISOWeeksInYear() {
4629          return weeksInYear(this.year(), 1, 4);
4630      }
4631  
4632      function getISOWeeksInISOWeekYear() {
4633          return weeksInYear(this.isoWeekYear(), 1, 4);
4634      }
4635  
4636      function getWeeksInYear() {
4637          var weekInfo = this.localeData()._week;
4638          return weeksInYear(this.year(), weekInfo.dow, weekInfo.doy);
4639      }
4640  
4641      function getWeeksInWeekYear() {
4642          var weekInfo = this.localeData()._week;
4643          return weeksInYear(this.weekYear(), weekInfo.dow, weekInfo.doy);
4644      }
4645  
4646      function getSetWeekYearHelper(input, week, weekday, dow, doy) {
4647          var weeksTarget;
4648          if (input == null) {
4649              return weekOfYear(this, dow, doy).year;
4650          } else {
4651              weeksTarget = weeksInYear(input, dow, doy);
4652              if (week > weeksTarget) {
4653                  week = weeksTarget;
4654              }
4655              return setWeekAll.call(this, input, week, weekday, dow, doy);
4656          }
4657      }
4658  
4659      function setWeekAll(weekYear, week, weekday, dow, doy) {
4660          var dayOfYearData = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy),
4661              date = createUTCDate(dayOfYearData.year, 0, dayOfYearData.dayOfYear);
4662  
4663          this.year(date.getUTCFullYear());
4664          this.month(date.getUTCMonth());
4665          this.date(date.getUTCDate());
4666          return this;
4667      }
4668  
4669      // FORMATTING
4670  
4671      addFormatToken('Q', 0, 'Qo', 'quarter');
4672  
4673      // ALIASES
4674  
4675      addUnitAlias('quarter', 'Q');
4676  
4677      // PRIORITY
4678  
4679      addUnitPriority('quarter', 7);
4680  
4681      // PARSING
4682  
4683      addRegexToken('Q', match1);
4684      addParseToken('Q', function (input, array) {
4685          array[MONTH] = (toInt(input) - 1) * 3;
4686      });
4687  
4688      // MOMENTS
4689  
4690      function getSetQuarter(input) {
4691          return input == null
4692              ? Math.ceil((this.month() + 1) / 3)
4693              : this.month((input - 1) * 3 + (this.month() % 3));
4694      }
4695  
4696      // FORMATTING
4697  
4698      addFormatToken('D', ['DD', 2], 'Do', 'date');
4699  
4700      // ALIASES
4701  
4702      addUnitAlias('date', 'D');
4703  
4704      // PRIORITY
4705      addUnitPriority('date', 9);
4706  
4707      // PARSING
4708  
4709      addRegexToken('D', match1to2);
4710      addRegexToken('DD', match1to2, match2);
4711      addRegexToken('Do', function (isStrict, locale) {
4712          // TODO: Remove "ordinalParse" fallback in next major release.
4713          return isStrict
4714              ? locale._dayOfMonthOrdinalParse || locale._ordinalParse
4715              : locale._dayOfMonthOrdinalParseLenient;
4716      });
4717  
4718      addParseToken(['D', 'DD'], DATE);
4719      addParseToken('Do', function (input, array) {
4720          array[DATE] = toInt(input.match(match1to2)[0]);
4721      });
4722  
4723      // MOMENTS
4724  
4725      var getSetDayOfMonth = makeGetSet('Date', true);
4726  
4727      // FORMATTING
4728  
4729      addFormatToken('DDD', ['DDDD', 3], 'DDDo', 'dayOfYear');
4730  
4731      // ALIASES
4732  
4733      addUnitAlias('dayOfYear', 'DDD');
4734  
4735      // PRIORITY
4736      addUnitPriority('dayOfYear', 4);
4737  
4738      // PARSING
4739  
4740      addRegexToken('DDD', match1to3);
4741      addRegexToken('DDDD', match3);
4742      addParseToken(['DDD', 'DDDD'], function (input, array, config) {
4743          config._dayOfYear = toInt(input);
4744      });
4745  
4746      // HELPERS
4747  
4748      // MOMENTS
4749  
4750      function getSetDayOfYear(input) {
4751          var dayOfYear =
4752              Math.round(
4753                  (this.clone().startOf('day') - this.clone().startOf('year')) / 864e5
4754              ) + 1;
4755          return input == null ? dayOfYear : this.add(input - dayOfYear, 'd');
4756      }
4757  
4758      // FORMATTING
4759  
4760      addFormatToken('m', ['mm', 2], 0, 'minute');
4761  
4762      // ALIASES
4763  
4764      addUnitAlias('minute', 'm');
4765  
4766      // PRIORITY
4767  
4768      addUnitPriority('minute', 14);
4769  
4770      // PARSING
4771  
4772      addRegexToken('m', match1to2);
4773      addRegexToken('mm', match1to2, match2);
4774      addParseToken(['m', 'mm'], MINUTE);
4775  
4776      // MOMENTS
4777  
4778      var getSetMinute = makeGetSet('Minutes', false);
4779  
4780      // FORMATTING
4781  
4782      addFormatToken('s', ['ss', 2], 0, 'second');
4783  
4784      // ALIASES
4785  
4786      addUnitAlias('second', 's');
4787  
4788      // PRIORITY
4789  
4790      addUnitPriority('second', 15);
4791  
4792      // PARSING
4793  
4794      addRegexToken('s', match1to2);
4795      addRegexToken('ss', match1to2, match2);
4796      addParseToken(['s', 'ss'], SECOND);
4797  
4798      // MOMENTS
4799  
4800      var getSetSecond = makeGetSet('Seconds', false);
4801  
4802      // FORMATTING
4803  
4804      addFormatToken('S', 0, 0, function () {
4805          return ~~(this.millisecond() / 100);
4806      });
4807  
4808      addFormatToken(0, ['SS', 2], 0, function () {
4809          return ~~(this.millisecond() / 10);
4810      });
4811  
4812      addFormatToken(0, ['SSS', 3], 0, 'millisecond');
4813      addFormatToken(0, ['SSSS', 4], 0, function () {
4814          return this.millisecond() * 10;
4815      });
4816      addFormatToken(0, ['SSSSS', 5], 0, function () {
4817          return this.millisecond() * 100;
4818      });
4819      addFormatToken(0, ['SSSSSS', 6], 0, function () {
4820          return this.millisecond() * 1000;
4821      });
4822      addFormatToken(0, ['SSSSSSS', 7], 0, function () {
4823          return this.millisecond() * 10000;
4824      });
4825      addFormatToken(0, ['SSSSSSSS', 8], 0, function () {
4826          return this.millisecond() * 100000;
4827      });
4828      addFormatToken(0, ['SSSSSSSSS', 9], 0, function () {
4829          return this.millisecond() * 1000000;
4830      });
4831  
4832      // ALIASES
4833  
4834      addUnitAlias('millisecond', 'ms');
4835  
4836      // PRIORITY
4837  
4838      addUnitPriority('millisecond', 16);
4839  
4840      // PARSING
4841  
4842      addRegexToken('S', match1to3, match1);
4843      addRegexToken('SS', match1to3, match2);
4844      addRegexToken('SSS', match1to3, match3);
4845  
4846      var token, getSetMillisecond;
4847      for (token = 'SSSS'; token.length <= 9; token += 'S') {
4848          addRegexToken(token, matchUnsigned);
4849      }
4850  
4851      function parseMs(input, array) {
4852          array[MILLISECOND] = toInt(('0.' + input) * 1000);
4853      }
4854  
4855      for (token = 'S'; token.length <= 9; token += 'S') {
4856          addParseToken(token, parseMs);
4857      }
4858  
4859      getSetMillisecond = makeGetSet('Milliseconds', false);
4860  
4861      // FORMATTING
4862  
4863      addFormatToken('z', 0, 0, 'zoneAbbr');
4864      addFormatToken('zz', 0, 0, 'zoneName');
4865  
4866      // MOMENTS
4867  
4868      function getZoneAbbr() {
4869          return this._isUTC ? 'UTC' : '';
4870      }
4871  
4872      function getZoneName() {
4873          return this._isUTC ? 'Coordinated Universal Time' : '';
4874      }
4875  
4876      var proto = Moment.prototype;
4877  
4878      proto.add = add;
4879      proto.calendar = calendar$1;
4880      proto.clone = clone;
4881      proto.diff = diff;
4882      proto.endOf = endOf;
4883      proto.format = format;
4884      proto.from = from;
4885      proto.fromNow = fromNow;
4886      proto.to = to;
4887      proto.toNow = toNow;
4888      proto.get = stringGet;
4889      proto.invalidAt = invalidAt;
4890      proto.isAfter = isAfter;
4891      proto.isBefore = isBefore;
4892      proto.isBetween = isBetween;
4893      proto.isSame = isSame;
4894      proto.isSameOrAfter = isSameOrAfter;
4895      proto.isSameOrBefore = isSameOrBefore;
4896      proto.isValid = isValid$2;
4897      proto.lang = lang;
4898      proto.locale = locale;
4899      proto.localeData = localeData;
4900      proto.max = prototypeMax;
4901      proto.min = prototypeMin;
4902      proto.parsingFlags = parsingFlags;
4903      proto.set = stringSet;
4904      proto.startOf = startOf;
4905      proto.subtract = subtract;
4906      proto.toArray = toArray;
4907      proto.toObject = toObject;
4908      proto.toDate = toDate;
4909      proto.toISOString = toISOString;
4910      proto.inspect = inspect;
4911      if (typeof Symbol !== 'undefined' && Symbol.for != null) {
4912          proto[Symbol.for('nodejs.util.inspect.custom')] = function () {
4913              return 'Moment<' + this.format() + '>';
4914          };
4915      }
4916      proto.toJSON = toJSON;
4917      proto.toString = toString;
4918      proto.unix = unix;
4919      proto.valueOf = valueOf;
4920      proto.creationData = creationData;
4921      proto.eraName = getEraName;
4922      proto.eraNarrow = getEraNarrow;
4923      proto.eraAbbr = getEraAbbr;
4924      proto.eraYear = getEraYear;
4925      proto.year = getSetYear;
4926      proto.isLeapYear = getIsLeapYear;
4927      proto.weekYear = getSetWeekYear;
4928      proto.isoWeekYear = getSetISOWeekYear;
4929      proto.quarter = proto.quarters = getSetQuarter;
4930      proto.month = getSetMonth;
4931      proto.daysInMonth = getDaysInMonth;
4932      proto.week = proto.weeks = getSetWeek;
4933      proto.isoWeek = proto.isoWeeks = getSetISOWeek;
4934      proto.weeksInYear = getWeeksInYear;
4935      proto.weeksInWeekYear = getWeeksInWeekYear;
4936      proto.isoWeeksInYear = getISOWeeksInYear;
4937      proto.isoWeeksInISOWeekYear = getISOWeeksInISOWeekYear;
4938      proto.date = getSetDayOfMonth;
4939      proto.day = proto.days = getSetDayOfWeek;
4940      proto.weekday = getSetLocaleDayOfWeek;
4941      proto.isoWeekday = getSetISODayOfWeek;
4942      proto.dayOfYear = getSetDayOfYear;
4943      proto.hour = proto.hours = getSetHour;
4944      proto.minute = proto.minutes = getSetMinute;
4945      proto.second = proto.seconds = getSetSecond;
4946      proto.millisecond = proto.milliseconds = getSetMillisecond;
4947      proto.utcOffset = getSetOffset;
4948      proto.utc = setOffsetToUTC;
4949      proto.local = setOffsetToLocal;
4950      proto.parseZone = setOffsetToParsedOffset;
4951      proto.hasAlignedHourOffset = hasAlignedHourOffset;
4952      proto.isDST = isDaylightSavingTime;
4953      proto.isLocal = isLocal;
4954      proto.isUtcOffset = isUtcOffset;
4955      proto.isUtc = isUtc;
4956      proto.isUTC = isUtc;
4957      proto.zoneAbbr = getZoneAbbr;
4958      proto.zoneName = getZoneName;
4959      proto.dates = deprecate(
4960          'dates accessor is deprecated. Use date instead.',
4961          getSetDayOfMonth
4962      );
4963      proto.months = deprecate(
4964          'months accessor is deprecated. Use month instead',
4965          getSetMonth
4966      );
4967      proto.years = deprecate(
4968          'years accessor is deprecated. Use year instead',
4969          getSetYear
4970      );
4971      proto.zone = deprecate(
4972          'moment().zone is deprecated, use moment().utcOffset instead. http://momentjs.com/guides/#/warnings/zone/',
4973          getSetZone
4974      );
4975      proto.isDSTShifted = deprecate(
4976          'isDSTShifted is deprecated. See http://momentjs.com/guides/#/warnings/dst-shifted/ for more information',
4977          isDaylightSavingTimeShifted
4978      );
4979  
4980      function createUnix(input) {
4981          return createLocal(input * 1000);
4982      }
4983  
4984      function createInZone() {
4985          return createLocal.apply(null, arguments).parseZone();
4986      }
4987  
4988      function preParsePostFormat(string) {
4989          return string;
4990      }
4991  
4992      var proto$1 = Locale.prototype;
4993  
4994      proto$1.calendar = calendar;
4995      proto$1.longDateFormat = longDateFormat;
4996      proto$1.invalidDate = invalidDate;
4997      proto$1.ordinal = ordinal;
4998      proto$1.preparse = preParsePostFormat;
4999      proto$1.postformat = preParsePostFormat;
5000      proto$1.relativeTime = relativeTime;
5001      proto$1.pastFuture = pastFuture;
5002      proto$1.set = set;
5003      proto$1.eras = localeEras;
5004      proto$1.erasParse = localeErasParse;
5005      proto$1.erasConvertYear = localeErasConvertYear;
5006      proto$1.erasAbbrRegex = erasAbbrRegex;
5007      proto$1.erasNameRegex = erasNameRegex;
5008      proto$1.erasNarrowRegex = erasNarrowRegex;
5009  
5010      proto$1.months = localeMonths;
5011      proto$1.monthsShort = localeMonthsShort;
5012      proto$1.monthsParse = localeMonthsParse;
5013      proto$1.monthsRegex = monthsRegex;
5014      proto$1.monthsShortRegex = monthsShortRegex;
5015      proto$1.week = localeWeek;
5016      proto$1.firstDayOfYear = localeFirstDayOfYear;
5017      proto$1.firstDayOfWeek = localeFirstDayOfWeek;
5018  
5019      proto$1.weekdays = localeWeekdays;
5020      proto$1.weekdaysMin = localeWeekdaysMin;
5021      proto$1.weekdaysShort = localeWeekdaysShort;
5022      proto$1.weekdaysParse = localeWeekdaysParse;
5023  
5024      proto$1.weekdaysRegex = weekdaysRegex;
5025      proto$1.weekdaysShortRegex = weekdaysShortRegex;
5026      proto$1.weekdaysMinRegex = weekdaysMinRegex;
5027  
5028      proto$1.isPM = localeIsPM;
5029      proto$1.meridiem = localeMeridiem;
5030  
5031      function get$1(format, index, field, setter) {
5032          var locale = getLocale(),
5033              utc = createUTC().set(setter, index);
5034          return locale[field](utc, format);
5035      }
5036  
5037      function listMonthsImpl(format, index, field) {
5038          if (isNumber(format)) {
5039              index = format;
5040              format = undefined;
5041          }
5042  
5043          format = format || '';
5044  
5045          if (index != null) {
5046              return get$1(format, index, field, 'month');
5047          }
5048  
5049          var i,
5050              out = [];
5051          for (i = 0; i < 12; i++) {
5052              out[i] = get$1(format, i, field, 'month');
5053          }
5054          return out;
5055      }
5056  
5057      // ()
5058      // (5)
5059      // (fmt, 5)
5060      // (fmt)
5061      // (true)
5062      // (true, 5)
5063      // (true, fmt, 5)
5064      // (true, fmt)
5065      function listWeekdaysImpl(localeSorted, format, index, field) {
5066          if (typeof localeSorted === 'boolean') {
5067              if (isNumber(format)) {
5068                  index = format;
5069                  format = undefined;
5070              }
5071  
5072              format = format || '';
5073          } else {
5074              format = localeSorted;
5075              index = format;
5076              localeSorted = false;
5077  
5078              if (isNumber(format)) {
5079                  index = format;
5080                  format = undefined;
5081              }
5082  
5083              format = format || '';
5084          }
5085  
5086          var locale = getLocale(),
5087              shift = localeSorted ? locale._week.dow : 0,
5088              i,
5089              out = [];
5090  
5091          if (index != null) {
5092              return get$1(format, (index + shift) % 7, field, 'day');
5093          }
5094  
5095          for (i = 0; i < 7; i++) {
5096              out[i] = get$1(format, (i + shift) % 7, field, 'day');
5097          }
5098          return out;
5099      }
5100  
5101      function listMonths(format, index) {
5102          return listMonthsImpl(format, index, 'months');
5103      }
5104  
5105      function listMonthsShort(format, index) {
5106          return listMonthsImpl(format, index, 'monthsShort');
5107      }
5108  
5109      function listWeekdays(localeSorted, format, index) {
5110          return listWeekdaysImpl(localeSorted, format, index, 'weekdays');
5111      }
5112  
5113      function listWeekdaysShort(localeSorted, format, index) {
5114          return listWeekdaysImpl(localeSorted, format, index, 'weekdaysShort');
5115      }
5116  
5117      function listWeekdaysMin(localeSorted, format, index) {
5118          return listWeekdaysImpl(localeSorted, format, index, 'weekdaysMin');
5119      }
5120  
5121      getSetGlobalLocale('en', {
5122          eras: [
5123              {
5124                  since: '0001-01-01',
5125                  until: +Infinity,
5126                  offset: 1,
5127                  name: 'Anno Domini',
5128                  narrow: 'AD',
5129                  abbr: 'AD',
5130              },
5131              {
5132                  since: '0000-12-31',
5133                  until: -Infinity,
5134                  offset: 1,
5135                  name: 'Before Christ',
5136                  narrow: 'BC',
5137                  abbr: 'BC',
5138              },
5139          ],
5140          dayOfMonthOrdinalParse: /\d{1,2}(th|st|nd|rd)/,
5141          ordinal: function (number) {
5142              var b = number % 10,
5143                  output =
5144                      toInt((number % 100) / 10) === 1
5145                          ? 'th'
5146                          : b === 1
5147                          ? 'st'
5148                          : b === 2
5149                          ? 'nd'
5150                          : b === 3
5151                          ? 'rd'
5152                          : 'th';
5153              return number + output;
5154          },
5155      });
5156  
5157      // Side effect imports
5158  
5159      hooks.lang = deprecate(
5160          'moment.lang is deprecated. Use moment.locale instead.',
5161          getSetGlobalLocale
5162      );
5163      hooks.langData = deprecate(
5164          'moment.langData is deprecated. Use moment.localeData instead.',
5165          getLocale
5166      );
5167  
5168      var mathAbs = Math.abs;
5169  
5170      function abs() {
5171          var data = this._data;
5172  
5173          this._milliseconds = mathAbs(this._milliseconds);
5174          this._days = mathAbs(this._days);
5175          this._months = mathAbs(this._months);
5176  
5177          data.milliseconds = mathAbs(data.milliseconds);
5178          data.seconds = mathAbs(data.seconds);
5179          data.minutes = mathAbs(data.minutes);
5180          data.hours = mathAbs(data.hours);
5181          data.months = mathAbs(data.months);
5182          data.years = mathAbs(data.years);
5183  
5184          return this;
5185      }
5186  
5187      function addSubtract$1(duration, input, value, direction) {
5188          var other = createDuration(input, value);
5189  
5190          duration._milliseconds += direction * other._milliseconds;
5191          duration._days += direction * other._days;
5192          duration._months += direction * other._months;
5193  
5194          return duration._bubble();
5195      }
5196  
5197      // supports only 2.0-style add(1, 's') or add(duration)
5198      function add$1(input, value) {
5199          return addSubtract$1(this, input, value, 1);
5200      }
5201  
5202      // supports only 2.0-style subtract(1, 's') or subtract(duration)
5203      function subtract$1(input, value) {
5204          return addSubtract$1(this, input, value, -1);
5205      }
5206  
5207      function absCeil(number) {
5208          if (number < 0) {
5209              return Math.floor(number);
5210          } else {
5211              return Math.ceil(number);
5212          }
5213      }
5214  
5215      function bubble() {
5216          var milliseconds = this._milliseconds,
5217              days = this._days,
5218              months = this._months,
5219              data = this._data,
5220              seconds,
5221              minutes,
5222              hours,
5223              years,
5224              monthsFromDays;
5225  
5226          // if we have a mix of positive and negative values, bubble down first
5227          // check: https://github.com/moment/moment/issues/2166
5228          if (
5229              !(
5230                  (milliseconds >= 0 && days >= 0 && months >= 0) ||
5231                  (milliseconds <= 0 && days <= 0 && months <= 0)
5232              )
5233          ) {
5234              milliseconds += absCeil(monthsToDays(months) + days) * 864e5;
5235              days = 0;
5236              months = 0;
5237          }
5238  
5239          // The following code bubbles up values, see the tests for
5240          // examples of what that means.
5241          data.milliseconds = milliseconds % 1000;
5242  
5243          seconds = absFloor(milliseconds / 1000);
5244          data.seconds = seconds % 60;
5245  
5246          minutes = absFloor(seconds / 60);
5247          data.minutes = minutes % 60;
5248  
5249          hours = absFloor(minutes / 60);
5250          data.hours = hours % 24;
5251  
5252          days += absFloor(hours / 24);
5253  
5254          // convert days to months
5255          monthsFromDays = absFloor(daysToMonths(days));
5256          months += monthsFromDays;
5257          days -= absCeil(monthsToDays(monthsFromDays));
5258  
5259          // 12 months -> 1 year
5260          years = absFloor(months / 12);
5261          months %= 12;
5262  
5263          data.days = days;
5264          data.months = months;
5265          data.years = years;
5266  
5267          return this;
5268      }
5269  
5270      function daysToMonths(days) {
5271          // 400 years have 146097 days (taking into account leap year rules)
5272          // 400 years have 12 months === 4800
5273          return (days * 4800) / 146097;
5274      }
5275  
5276      function monthsToDays(months) {
5277          // the reverse of daysToMonths
5278          return (months * 146097) / 4800;
5279      }
5280  
5281      function as(units) {
5282          if (!this.isValid()) {
5283              return NaN;
5284          }
5285          var days,
5286              months,
5287              milliseconds = this._milliseconds;
5288  
5289          units = normalizeUnits(units);
5290  
5291          if (units === 'month' || units === 'quarter' || units === 'year') {
5292              days = this._days + milliseconds / 864e5;
5293              months = this._months + daysToMonths(days);
5294              switch (units) {
5295                  case 'month':
5296                      return months;
5297                  case 'quarter':
5298                      return months / 3;
5299                  case 'year':
5300                      return months / 12;
5301              }
5302          } else {
5303              // handle milliseconds separately because of floating point math errors (issue #1867)
5304              days = this._days + Math.round(monthsToDays(this._months));
5305              switch (units) {
5306                  case 'week':
5307                      return days / 7 + milliseconds / 6048e5;
5308                  case 'day':
5309                      return days + milliseconds / 864e5;
5310                  case 'hour':
5311                      return days * 24 + milliseconds / 36e5;
5312                  case 'minute':
5313                      return days * 1440 + milliseconds / 6e4;
5314                  case 'second':
5315                      return days * 86400 + milliseconds / 1000;
5316                  // Math.floor prevents floating point math errors here
5317                  case 'millisecond':
5318                      return Math.floor(days * 864e5) + milliseconds;
5319                  default:
5320                      throw new Error('Unknown unit ' + units);
5321              }
5322          }
5323      }
5324  
5325      // TODO: Use this.as('ms')?
5326      function valueOf$1() {
5327          if (!this.isValid()) {
5328              return NaN;
5329          }
5330          return (
5331              this._milliseconds +
5332              this._days * 864e5 +
5333              (this._months % 12) * 2592e6 +
5334              toInt(this._months / 12) * 31536e6
5335          );
5336      }
5337  
5338      function makeAs(alias) {
5339          return function () {
5340              return this.as(alias);
5341          };
5342      }
5343  
5344      var asMilliseconds = makeAs('ms'),
5345          asSeconds = makeAs('s'),
5346          asMinutes = makeAs('m'),
5347          asHours = makeAs('h'),
5348          asDays = makeAs('d'),
5349          asWeeks = makeAs('w'),
5350          asMonths = makeAs('M'),
5351          asQuarters = makeAs('Q'),
5352          asYears = makeAs('y');
5353  
5354      function clone$1() {
5355          return createDuration(this);
5356      }
5357  
5358      function get$2(units) {
5359          units = normalizeUnits(units);
5360          return this.isValid() ? this[units + 's']() : NaN;
5361      }
5362  
5363      function makeGetter(name) {
5364          return function () {
5365              return this.isValid() ? this._data[name] : NaN;
5366          };
5367      }
5368  
5369      var milliseconds = makeGetter('milliseconds'),
5370          seconds = makeGetter('seconds'),
5371          minutes = makeGetter('minutes'),
5372          hours = makeGetter('hours'),
5373          days = makeGetter('days'),
5374          months = makeGetter('months'),
5375          years = makeGetter('years');
5376  
5377      function weeks() {
5378          return absFloor(this.days() / 7);
5379      }
5380  
5381      var round = Math.round,
5382          thresholds = {
5383              ss: 44, // a few seconds to seconds
5384              s: 45, // seconds to minute
5385              m: 45, // minutes to hour
5386              h: 22, // hours to day
5387              d: 26, // days to month/week
5388              w: null, // weeks to month
5389              M: 11, // months to year
5390          };
5391  
5392      // helper function for moment.fn.from, moment.fn.fromNow, and moment.duration.fn.humanize
5393      function substituteTimeAgo(string, number, withoutSuffix, isFuture, locale) {
5394          return locale.relativeTime(number || 1, !!withoutSuffix, string, isFuture);
5395      }
5396  
5397      function relativeTime$1(posNegDuration, withoutSuffix, thresholds, locale) {
5398          var duration = createDuration(posNegDuration).abs(),
5399              seconds = round(duration.as('s')),
5400              minutes = round(duration.as('m')),
5401              hours = round(duration.as('h')),
5402              days = round(duration.as('d')),
5403              months = round(duration.as('M')),
5404              weeks = round(duration.as('w')),
5405              years = round(duration.as('y')),
5406              a =
5407                  (seconds <= thresholds.ss && ['s', seconds]) ||
5408                  (seconds < thresholds.s && ['ss', seconds]) ||
5409                  (minutes <= 1 && ['m']) ||
5410                  (minutes < thresholds.m && ['mm', minutes]) ||
5411                  (hours <= 1 && ['h']) ||
5412                  (hours < thresholds.h && ['hh', hours]) ||
5413                  (days <= 1 && ['d']) ||
5414                  (days < thresholds.d && ['dd', days]);
5415  
5416          if (thresholds.w != null) {
5417              a =
5418                  a ||
5419                  (weeks <= 1 && ['w']) ||
5420                  (weeks < thresholds.w && ['ww', weeks]);
5421          }
5422          a = a ||
5423              (months <= 1 && ['M']) ||
5424              (months < thresholds.M && ['MM', months]) ||
5425              (years <= 1 && ['y']) || ['yy', years];
5426  
5427          a[2] = withoutSuffix;
5428          a[3] = +posNegDuration > 0;
5429          a[4] = locale;
5430          return substituteTimeAgo.apply(null, a);
5431      }
5432  
5433      // This function allows you to set the rounding function for relative time strings
5434      function getSetRelativeTimeRounding(roundingFunction) {
5435          if (roundingFunction === undefined) {
5436              return round;
5437          }
5438          if (typeof roundingFunction === 'function') {
5439              round = roundingFunction;
5440              return true;
5441          }
5442          return false;
5443      }
5444  
5445      // This function allows you to set a threshold for relative time strings
5446      function getSetRelativeTimeThreshold(threshold, limit) {
5447          if (thresholds[threshold] === undefined) {
5448              return false;
5449          }
5450          if (limit === undefined) {
5451              return thresholds[threshold];
5452          }
5453          thresholds[threshold] = limit;
5454          if (threshold === 's') {
5455              thresholds.ss = limit - 1;
5456          }
5457          return true;
5458      }
5459  
5460      function humanize(argWithSuffix, argThresholds) {
5461          if (!this.isValid()) {
5462              return this.localeData().invalidDate();
5463          }
5464  
5465          var withSuffix = false,
5466              th = thresholds,
5467              locale,
5468              output;
5469  
5470          if (typeof argWithSuffix === 'object') {
5471              argThresholds = argWithSuffix;
5472              argWithSuffix = false;
5473          }
5474          if (typeof argWithSuffix === 'boolean') {
5475              withSuffix = argWithSuffix;
5476          }
5477          if (typeof argThresholds === 'object') {
5478              th = Object.assign({}, thresholds, argThresholds);
5479              if (argThresholds.s != null && argThresholds.ss == null) {
5480                  th.ss = argThresholds.s - 1;
5481              }
5482          }
5483  
5484          locale = this.localeData();
5485          output = relativeTime$1(this, !withSuffix, th, locale);
5486  
5487          if (withSuffix) {
5488              output = locale.pastFuture(+this, output);
5489          }
5490  
5491          return locale.postformat(output);
5492      }
5493  
5494      var abs$1 = Math.abs;
5495  
5496      function sign(x) {
5497          return (x > 0) - (x < 0) || +x;
5498      }
5499  
5500      function toISOString$1() {
5501          // for ISO strings we do not use the normal bubbling rules:
5502          //  * milliseconds bubble up until they become hours
5503          //  * days do not bubble at all
5504          //  * months bubble up until they become years
5505          // This is because there is no context-free conversion between hours and days
5506          // (think of clock changes)
5507          // and also not between days and months (28-31 days per month)
5508          if (!this.isValid()) {
5509              return this.localeData().invalidDate();
5510          }
5511  
5512          var seconds = abs$1(this._milliseconds) / 1000,
5513              days = abs$1(this._days),
5514              months = abs$1(this._months),
5515              minutes,
5516              hours,
5517              years,
5518              s,
5519              total = this.asSeconds(),
5520              totalSign,
5521              ymSign,
5522              daysSign,
5523              hmsSign;
5524  
5525          if (!total) {
5526              // this is the same as C#'s (Noda) and python (isodate)...
5527              // but not other JS (goog.date)
5528              return 'P0D';
5529          }
5530  
5531          // 3600 seconds -> 60 minutes -> 1 hour
5532          minutes = absFloor(seconds / 60);
5533          hours = absFloor(minutes / 60);
5534          seconds %= 60;
5535          minutes %= 60;
5536  
5537          // 12 months -> 1 year
5538          years = absFloor(months / 12);
5539          months %= 12;
5540  
5541          // inspired by https://github.com/dordille/moment-isoduration/blob/master/moment.isoduration.js
5542          s = seconds ? seconds.toFixed(3).replace(/\.?0+$/, '') : '';
5543  
5544          totalSign = total < 0 ? '-' : '';
5545          ymSign = sign(this._months) !== sign(total) ? '-' : '';
5546          daysSign = sign(this._days) !== sign(total) ? '-' : '';
5547          hmsSign = sign(this._milliseconds) !== sign(total) ? '-' : '';
5548  
5549          return (
5550              totalSign +
5551              'P' +
5552              (years ? ymSign + years + 'Y' : '') +
5553              (months ? ymSign + months + 'M' : '') +
5554              (days ? daysSign + days + 'D' : '') +
5555              (hours || minutes || seconds ? 'T' : '') +
5556              (hours ? hmsSign + hours + 'H' : '') +
5557              (minutes ? hmsSign + minutes + 'M' : '') +
5558              (seconds ? hmsSign + s + 'S' : '')
5559          );
5560      }
5561  
5562      var proto$2 = Duration.prototype;
5563  
5564      proto$2.isValid = isValid$1;
5565      proto$2.abs = abs;
5566      proto$2.add = add$1;
5567      proto$2.subtract = subtract$1;
5568      proto$2.as = as;
5569      proto$2.asMilliseconds = asMilliseconds;
5570      proto$2.asSeconds = asSeconds;
5571      proto$2.asMinutes = asMinutes;
5572      proto$2.asHours = asHours;
5573      proto$2.asDays = asDays;
5574      proto$2.asWeeks = asWeeks;
5575      proto$2.asMonths = asMonths;
5576      proto$2.asQuarters = asQuarters;
5577      proto$2.asYears = asYears;
5578      proto$2.valueOf = valueOf$1;
5579      proto$2._bubble = bubble;
5580      proto$2.clone = clone$1;
5581      proto$2.get = get$2;
5582      proto$2.milliseconds = milliseconds;
5583      proto$2.seconds = seconds;
5584      proto$2.minutes = minutes;
5585      proto$2.hours = hours;
5586      proto$2.days = days;
5587      proto$2.weeks = weeks;
5588      proto$2.months = months;
5589      proto$2.years = years;
5590      proto$2.humanize = humanize;
5591      proto$2.toISOString = toISOString$1;
5592      proto$2.toString = toISOString$1;
5593      proto$2.toJSON = toISOString$1;
5594      proto$2.locale = locale;
5595      proto$2.localeData = localeData;
5596  
5597      proto$2.toIsoString = deprecate(
5598          'toIsoString() is deprecated. Please use toISOString() instead (notice the capitals)',
5599          toISOString$1
5600      );
5601      proto$2.lang = lang;
5602  
5603      // FORMATTING
5604  
5605      addFormatToken('X', 0, 0, 'unix');
5606      addFormatToken('x', 0, 0, 'valueOf');
5607  
5608      // PARSING
5609  
5610      addRegexToken('x', matchSigned);
5611      addRegexToken('X', matchTimestamp);
5612      addParseToken('X', function (input, array, config) {
5613          config._d = new Date(parseFloat(input) * 1000);
5614      });
5615      addParseToken('x', function (input, array, config) {
5616          config._d = new Date(toInt(input));
5617      });
5618  
5619      //! moment.js
5620  
5621      hooks.version = '2.27.0';
5622  
5623      setHookCallback(createLocal);
5624  
5625      hooks.fn = proto;
5626      hooks.min = min;
5627      hooks.max = max;
5628      hooks.now = now;
5629      hooks.utc = createUTC;
5630      hooks.unix = createUnix;
5631      hooks.months = listMonths;
5632      hooks.isDate = isDate;
5633      hooks.locale = getSetGlobalLocale;
5634      hooks.invalid = createInvalid;
5635      hooks.duration = createDuration;
5636      hooks.isMoment = isMoment;
5637      hooks.weekdays = listWeekdays;
5638      hooks.parseZone = createInZone;
5639      hooks.localeData = getLocale;
5640      hooks.isDuration = isDuration;
5641      hooks.monthsShort = listMonthsShort;
5642      hooks.weekdaysMin = listWeekdaysMin;
5643      hooks.defineLocale = defineLocale;
5644      hooks.updateLocale = updateLocale;
5645      hooks.locales = listLocales;
5646      hooks.weekdaysShort = listWeekdaysShort;
5647      hooks.normalizeUnits = normalizeUnits;
5648      hooks.relativeTimeRounding = getSetRelativeTimeRounding;
5649      hooks.relativeTimeThreshold = getSetRelativeTimeThreshold;
5650      hooks.calendarFormat = getCalendarFormat;
5651      hooks.prototype = proto;
5652  
5653      // currently HTML5 input type only supports 24-hour formats
5654      hooks.HTML5_FMT = {
5655          DATETIME_LOCAL: 'YYYY-MM-DDTHH:mm', // <input type="datetime-local" />
5656          DATETIME_LOCAL_SECONDS: 'YYYY-MM-DDTHH:mm:ss', // <input type="datetime-local" step="1" />
5657          DATETIME_LOCAL_MS: 'YYYY-MM-DDTHH:mm:ss.SSS', // <input type="datetime-local" step="0.001" />
5658          DATE: 'YYYY-MM-DD', // <input type="date" />
5659          TIME: 'HH:mm', // <input type="time" />
5660          TIME_SECONDS: 'HH:mm:ss', // <input type="time" step="1" />
5661          TIME_MS: 'HH:mm:ss.SSS', // <input type="time" step="0.001" />
5662          WEEK: 'GGGG-[W]WW', // <input type="week" />
5663          MONTH: 'YYYY-MM', // <input type="month" />
5664      };
5665  
5666      return hooks;
5667  
5668  })));