]> git.ipfire.org Git - thirdparty/pdns.git/commitdiff
Update moment.min.js (path tarversal fix; we are unaffected) 11524/head
authorOtto Moerbeek <otto.moerbeek@open-xchange.com>
Tue, 12 Apr 2022 05:52:38 +0000 (07:52 +0200)
committerOtto Moerbeek <otto.moerbeek@open-xchange.com>
Tue, 12 Apr 2022 08:20:05 +0000 (10:20 +0200)
Also remove unused moment.js

pdns/dnsdistdist/html/js/moment.min.js
pdns/dnsdistdist/src_js/moment.js
pdns/recursordist/html/js/moment.js
pdns/recursordist/html/js/moment.min.js

index c63998f9a5eb010aed2d53ba242130a924c9dc5a..c04a26c950aec0c5e48c312b2ac3b13e01dec7eb 100644 (file)
@@ -1,7 +1,2 @@
-//! moment.js
-//! version : 2.11.1
-//! authors : Tim Wood, Iskren Chernev, Moment.js contributors
-//! license : MIT
-//! momentjs.com
-!function(a,b){"object"==typeof exports&&"undefined"!=typeof module?module.exports=b():"function"==typeof define&&define.amd?define(b):a.moment=b()}(this,function(){"use strict";function a(){return Uc.apply(null,arguments)}function b(a){Uc=a}function c(a){return"[object Array]"===Object.prototype.toString.call(a)}function d(a){return a instanceof Date||"[object Date]"===Object.prototype.toString.call(a)}function e(a,b){var c,d=[];for(c=0;c<a.length;++c)d.push(b(a[c],c));return d}function f(a,b){return Object.prototype.hasOwnProperty.call(a,b)}function g(a,b){for(var c in b)f(b,c)&&(a[c]=b[c]);return f(b,"toString")&&(a.toString=b.toString),f(b,"valueOf")&&(a.valueOf=b.valueOf),a}function h(a,b,c,d){return Da(a,b,c,d,!0).utc()}function i(){return{empty:!1,unusedTokens:[],unusedInput:[],overflow:-2,charsLeftOver:0,nullInput:!1,invalidMonth:null,invalidFormat:!1,userInvalidated:!1,iso:!1}}function j(a){return null==a._pf&&(a._pf=i()),a._pf}function k(a){if(null==a._isValid){var b=j(a);a._isValid=!(isNaN(a._d.getTime())||!(b.overflow<0)||b.empty||b.invalidMonth||b.invalidWeekday||b.nullInput||b.invalidFormat||b.userInvalidated),a._strict&&(a._isValid=a._isValid&&0===b.charsLeftOver&&0===b.unusedTokens.length&&void 0===b.bigHour)}return a._isValid}function l(a){var b=h(NaN);return null!=a?g(j(b),a):j(b).userInvalidated=!0,b}function m(a){return void 0===a}function n(a,b){var c,d,e;if(m(b._isAMomentObject)||(a._isAMomentObject=b._isAMomentObject),m(b._i)||(a._i=b._i),m(b._f)||(a._f=b._f),m(b._l)||(a._l=b._l),m(b._strict)||(a._strict=b._strict),m(b._tzm)||(a._tzm=b._tzm),m(b._isUTC)||(a._isUTC=b._isUTC),m(b._offset)||(a._offset=b._offset),m(b._pf)||(a._pf=j(b)),m(b._locale)||(a._locale=b._locale),Wc.length>0)for(c in Wc)d=Wc[c],e=b[d],m(e)||(a[d]=e);return a}function o(b){n(this,b),this._d=new Date(null!=b._d?b._d.getTime():NaN),Xc===!1&&(Xc=!0,a.updateOffset(this),Xc=!1)}function p(a){return a instanceof o||null!=a&&null!=a._isAMomentObject}function q(a){return 0>a?Math.ceil(a):Math.floor(a)}function r(a){var b=+a,c=0;return 0!==b&&isFinite(b)&&(c=q(b)),c}function s(a,b,c){var d,e=Math.min(a.length,b.length),f=Math.abs(a.length-b.length),g=0;for(d=0;e>d;d++)(c&&a[d]!==b[d]||!c&&r(a[d])!==r(b[d]))&&g++;return g+f}function t(){}function u(a){return a?a.toLowerCase().replace("_","-"):a}function v(a){for(var b,c,d,e,f=0;f<a.length;){for(e=u(a[f]).split("-"),b=e.length,c=u(a[f+1]),c=c?c.split("-"):null;b>0;){if(d=w(e.slice(0,b).join("-")))return d;if(c&&c.length>=b&&s(e,c,!0)>=b-1)break;b--}f++}return null}function w(a){var b=null;if(!Yc[a]&&"undefined"!=typeof module&&module&&module.exports)try{b=Vc._abbr,require("./locale/"+a),x(b)}catch(c){}return Yc[a]}function x(a,b){var c;return a&&(c=m(b)?z(a):y(a,b),c&&(Vc=c)),Vc._abbr}function y(a,b){return null!==b?(b.abbr=a,Yc[a]=Yc[a]||new t,Yc[a].set(b),x(a),Yc[a]):(delete Yc[a],null)}function z(a){var b;if(a&&a._locale&&a._locale._abbr&&(a=a._locale._abbr),!a)return Vc;if(!c(a)){if(b=w(a))return b;a=[a]}return v(a)}function A(a,b){var c=a.toLowerCase();Zc[c]=Zc[c+"s"]=Zc[b]=a}function B(a){return"string"==typeof a?Zc[a]||Zc[a.toLowerCase()]:void 0}function C(a){var b,c,d={};for(c in a)f(a,c)&&(b=B(c),b&&(d[b]=a[c]));return d}function D(a){return a instanceof Function||"[object Function]"===Object.prototype.toString.call(a)}function E(b,c){return function(d){return null!=d?(G(this,b,d),a.updateOffset(this,c),this):F(this,b)}}function F(a,b){return a.isValid()?a._d["get"+(a._isUTC?"UTC":"")+b]():NaN}function G(a,b,c){a.isValid()&&a._d["set"+(a._isUTC?"UTC":"")+b](c)}function H(a,b){var c;if("object"==typeof a)for(c in a)this.set(c,a[c]);else if(a=B(a),D(this[a]))return this[a](b);return this}function I(a,b,c){var d=""+Math.abs(a),e=b-d.length,f=a>=0;return(f?c?"+":"":"-")+Math.pow(10,Math.max(0,e)).toString().substr(1)+d}function J(a,b,c,d){var e=d;"string"==typeof d&&(e=function(){return this[d]()}),a&&(bd[a]=e),b&&(bd[b[0]]=function(){return I(e.apply(this,arguments),b[1],b[2])}),c&&(bd[c]=function(){return this.localeData().ordinal(e.apply(this,arguments),a)})}function K(a){return a.match(/\[[\s\S]/)?a.replace(/^\[|\]$/g,""):a.replace(/\\/g,"")}function L(a){var b,c,d=a.match($c);for(b=0,c=d.length;c>b;b++)bd[d[b]]?d[b]=bd[d[b]]:d[b]=K(d[b]);return function(e){var f="";for(b=0;c>b;b++)f+=d[b]instanceof Function?d[b].call(e,a):d[b];return f}}function M(a,b){return a.isValid()?(b=N(b,a.localeData()),ad[b]=ad[b]||L(b),ad[b](a)):a.localeData().invalidDate()}function N(a,b){function c(a){return b.longDateFormat(a)||a}var d=5;for(_c.lastIndex=0;d>=0&&_c.test(a);)a=a.replace(_c,c),_c.lastIndex=0,d-=1;return a}function O(a,b,c){td[a]=D(b)?b:function(a,d){return a&&c?c:b}}function P(a,b){return f(td,a)?td[a](b._strict,b._locale):new RegExp(Q(a))}function Q(a){return R(a.replace("\\","").replace(/\\(\[)|\\(\])|\[([^\]\[]*)\]|\\(.)/g,function(a,b,c,d,e){return b||c||d||e}))}function R(a){return a.replace(/[-\/\\^$*+?.()|[\]{}]/g,"\\$&")}function S(a,b){var c,d=b;for("string"==typ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%12*2592e6+31536e6*g(this._months/12):NaN},U._bubble=function(){var e=this._milliseconds,t=this._days,n=this._months,s=this._data;return 0<=e&&0<=t&&0<=n||e<=0&&t<=0&&n<=0||(e+=864e5*gn(pn(n)+t),n=t=0),s.milliseconds=e%1e3,e=y(e/1e3),s.seconds=e%60,e=y(e/60),s.minutes=e%60,e=y(e/60),s.hours=e%24,t+=y(e/24),n+=e=y(wn(t)),t-=gn(pn(e)),e=y(n/12),n%=12,s.days=t,s.months=n,s.years=e,this},U.clone=function(){return C(this)},U.get=function(e){return e=_(e),this.isValid()?this[e+"s"]():NaN},U.milliseconds=ye,U.seconds=ke,U.minutes=Ie,U.hours=w,U.days=Mn,U.weeks=function(){return y(this.days()/7)},U.months=Dn,U.years=Sn,U.humanize=function(e,t){if(!this.isValid())return this.localeData().invalidDate();var n=!1,s=On;return"object"==typeof e&&(t=e,e=!1),"boolean"==typeof e&&(n=e),"object"==typeof t&&(s=Object.assign({},On,t),null!=t.s&&null==t.ss&&(s.ss=t.s-1)),e=this.localeData(),t=bn(this,!n,s,e),n&&(t=e.pastFuture(+this,t)),e.postformat(t)},U.toISOString=Nn,U.toString=Nn,U.toJSON=Nn,U.locale=Xt,U.localeData=Kt,U.toIsoString=e("toIsoString() is deprecated. Please use toISOString() instead (notice the capitals)",Nn),U.lang=Xe,s("X",0,0,"unix"),s("x",0,0,"valueOf"),v("x",De),v("X",/[+-]?\d+(\.\d{1,3})?/),D("X",function(e,t,n){n._d=new Date(1e3*parseFloat(e))}),D("x",function(e,t,n){n._d=new Date(g(e))}),f.version="2.29.2",H=W,f.fn=i,f.min=function(){return Rt("isBefore",[].slice.call(arguments,0))},f.max=function(){return Rt("isAfter",[].slice.call(arguments,0))},f.now=function(){return Date.now?Date.now():+new Date},f.utc=l,f.unix=function(e){return W(1e3*e)},f.months=function(e,t){return fn(e,t,"months")},f.isDate=V,f.locale=ct,f.invalid=I,f.duration=C,f.isMoment=h,f.weekdays=function(e,t,n){return mn(e,t,n,"weekdays")},f.parseZone=function(){return W.apply(null,arguments).parseZone()},f.localeData=mt,f.isDuration=Ut,f.monthsShort=function(e,t){return fn(e,t,"monthsShort")},f.weekdaysMin=function(e,t,n){return mn(e,t,n,"weekdaysMin")},f.defineLocale=ft,f.updateLocale=function(e,t){var n,s;return null!=t?(s=ot,null!=R[e]&&null!=R[e].parentLocale?R[e].set(X(R[e]._config,t)):(t=X(s=null!=(n=dt(e))?n._config:s,t),null==n&&(t.abbr=e),(s=new K(t)).parentLocale=R[e],R[e]=s),ct(e)):null!=R[e]&&(null!=R[e].parentLocale?(R[e]=R[e].parentLocale,e===ct()&&ct(e)):null!=R[e]&&delete R[e]),R[e]},f.locales=function(){return ee(R)},f.weekdaysShort=function(e,t,n){return mn(e,t,n,"weekdaysShort")},f.normalizeUnits=_,f.relativeTimeRounding=function(e){return void 0===e?Yn:"function"==typeof e&&(Yn=e,!0)},f.relativeTimeThreshold=function(e,t){return void 0!==On[e]&&(void 0===t?On[e]:(On[e]=t,"s"===e&&(On.ss=t-1),!0))},f.calendarFormat=function(e,t){return(e=e.diff(t,"days",!0))<-6?"sameElse":e<-1?"lastWeek":e<0?"lastDay":e<1?"sameDay":e<2?"nextDay":e<7?"nextWeek":"sameElse"},f.prototype=i,f.HTML5_FMT={DATETIME_LOCAL:"YYYY-MM-DDTHH:mm",DATETIME_LOCAL_SECONDS:"YYYY-MM-DDTHH:mm:ss",DATETIME_LOCAL_MS:"YYYY-MM-DDTHH:mm:ss.SSS",DATE:"YYYY-MM-DD",TIME:"HH:mm",TIME_SECONDS:"HH:mm:ss",TIME_MS:"HH:mm:ss.SSS",WEEK:"GGGG-[W]WW",MONTH:"YYYY-MM"},f});
+//# sourceMappingURL=moment.min.js.map
\ No newline at end of file
index c003e95fcf272ca56a82c5ee3c8d29b9f6e73bad..2e559835a0acf9bc03ffef58fc824739bbb1f7f1 100644 (file)
@@ -1,5 +1,5 @@
 //! moment.js
-//! version : 2.11.1
+//! version : 2.29.2
 //! authors : Tim Wood, Iskren Chernev, Moment.js contributors
 //! license : MIT
 //! momentjs.com
@@ -8,40 +8,82 @@
     typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
     typeof define === 'function' && define.amd ? define(factory) :
     global.moment = factory()
-}(this, function () { 'use strict';
+}(this, (function () { 'use strict';
 
     var hookCallback;
 
-    function utils_hooks__hooks () {
+    function hooks() {
         return hookCallback.apply(null, arguments);
     }
 
     // This is done to register the method called with moment()
     // without creating circular dependencies.
-    function setHookCallback (callback) {
+    function setHookCallback(callback) {
         hookCallback = callback;
     }
 
     function isArray(input) {
-        return Object.prototype.toString.call(input) === '[object Array]';
+        return (
+            input instanceof Array ||
+            Object.prototype.toString.call(input) === '[object Array]'
+        );
+    }
+
+    function isObject(input) {
+        // IE8 will treat undefined and null as object if it wasn't for
+        // input != null
+        return (
+            input != null &&
+            Object.prototype.toString.call(input) === '[object Object]'
+        );
+    }
+
+    function hasOwnProp(a, b) {
+        return Object.prototype.hasOwnProperty.call(a, b);
+    }
+
+    function isObjectEmpty(obj) {
+        if (Object.getOwnPropertyNames) {
+            return Object.getOwnPropertyNames(obj).length === 0;
+        } else {
+            var k;
+            for (k in obj) {
+                if (hasOwnProp(obj, k)) {
+                    return false;
+                }
+            }
+            return true;
+        }
+    }
+
+    function isUndefined(input) {
+        return input === void 0;
+    }
+
+    function isNumber(input) {
+        return (
+            typeof input === 'number' ||
+            Object.prototype.toString.call(input) === '[object Number]'
+        );
     }
 
     function isDate(input) {
-        return input instanceof Date || Object.prototype.toString.call(input) === '[object Date]';
+        return (
+            input instanceof Date ||
+            Object.prototype.toString.call(input) === '[object Date]'
+        );
     }
 
     function map(arr, fn) {
-        var res = [], i;
-        for (i = 0; i < arr.length; ++i) {
+        var res = [],
+            i,
+            arrLen = arr.length;
+        for (i = 0; i < arrLen; ++i) {
             res.push(fn(arr[i], i));
         }
         return res;
     }
 
-    function hasOwnProp(a, b) {
-        return Object.prototype.hasOwnProperty.call(a, b);
-    }
-
     function extend(a, b) {
         for (var i in b) {
             if (hasOwnProp(b, i)) {
         return a;
     }
 
-    function create_utc__createUTC (input, format, locale, strict) {
+    function createUTC(input, format, locale, strict) {
         return createLocalOrUTC(input, format, locale, strict, true).utc();
     }
 
     function defaultParsingFlags() {
         // We need to deep clone this object.
         return {
-            empty           : false,
-            unusedTokens    : [],
-            unusedInput     : [],
-            overflow        : -2,
-            charsLeftOver   : 0,
-            nullInput       : false,
-            invalidMonth    : null,
-            invalidFormat   : false,
-            userInvalidated : false,
-            iso             : false
+            empty: false,
+            unusedTokens: [],
+            unusedInput: [],
+            overflow: -2,
+            charsLeftOver: 0,
+            nullInput: false,
+            invalidEra: null,
+            invalidMonth: null,
+            invalidFormat: false,
+            userInvalidated: false,
+            iso: false,
+            parsedDateParts: [],
+            era: null,
+            meridiem: null,
+            rfc2822: false,
+            weekdayMismatch: false,
         };
     }
 
         return m._pf;
     }
 
-    function valid__isValid(m) {
+    var some;
+    if (Array.prototype.some) {
+        some = Array.prototype.some;
+    } else {
+        some = function (fun) {
+            var t = Object(this),
+                len = t.length >>> 0,
+                i;
+
+            for (i = 0; i < len; i++) {
+                if (i in t && fun.call(this, t[i], i, t)) {
+                    return true;
+                }
+            }
+
+            return false;
+        };
+    }
+
+    function isValid(m) {
         if (m._isValid == null) {
-            var flags = getParsingFlags(m);
-            m._isValid = !isNaN(m._d.getTime()) &&
-                flags.overflow < 0 &&
-                !flags.empty &&
-                !flags.invalidMonth &&
-                !flags.invalidWeekday &&
-                !flags.nullInput &&
-                !flags.invalidFormat &&
-                !flags.userInvalidated;
+            var flags = getParsingFlags(m),
+                parsedParts = some.call(flags.parsedDateParts, function (i) {
+                    return i != null;
+                }),
+                isNowValid =
+                    !isNaN(m._d.getTime()) &&
+                    flags.overflow < 0 &&
+                    !flags.empty &&
+                    !flags.invalidEra &&
+                    !flags.invalidMonth &&
+                    !flags.invalidWeekday &&
+                    !flags.weekdayMismatch &&
+                    !flags.nullInput &&
+                    !flags.invalidFormat &&
+                    !flags.userInvalidated &&
+                    (!flags.meridiem || (flags.meridiem && parsedParts));
 
             if (m._strict) {
-                m._isValid = m._isValid &&
+                isNowValid =
+                    isNowValid &&
                     flags.charsLeftOver === 0 &&
                     flags.unusedTokens.length === 0 &&
                     flags.bigHour === undefined;
             }
+
+            if (Object.isFrozen == null || !Object.isFrozen(m)) {
+                m._isValid = isNowValid;
+            } else {
+                return isNowValid;
+            }
         }
         return m._isValid;
     }
 
-    function valid__createInvalid (flags) {
-        var m = create_utc__createUTC(NaN);
+    function createInvalid(flags) {
+        var m = createUTC(NaN);
         if (flags != null) {
             extend(getParsingFlags(m), flags);
-        }
-        else {
+        } else {
             getParsingFlags(m).userInvalidated = true;
         }
 
         return m;
     }
 
-    function isUndefined(input) {
-        return input === void 0;
-    }
-
     // Plugins that add properties should also add the key here (null value),
     // so we can properly clone ourselves.
-    var momentProperties = utils_hooks__hooks.momentProperties = [];
+    var momentProperties = (hooks.momentProperties = []),
+        updateInProgress = false;
 
     function copyConfig(to, from) {
-        var i, prop, val;
+        var i,
+            prop,
+            val,
+            momentPropertiesLen = momentProperties.length;
 
         if (!isUndefined(from._isAMomentObject)) {
             to._isAMomentObject = from._isAMomentObject;
             to._locale = from._locale;
         }
 
-        if (momentProperties.length > 0) {
-            for (i in momentProperties) {
+        if (momentPropertiesLen > 0) {
+            for (i = 0; i < momentPropertiesLen; i++) {
                 prop = momentProperties[i];
                 val = from[prop];
                 if (!isUndefined(val)) {
         return to;
     }
 
-    var updateInProgress = false;
-
     // Moment prototype object
     function Moment(config) {
         copyConfig(this, config);
         this._d = new Date(config._d != null ? config._d.getTime() : NaN);
+        if (!this.isValid()) {
+            this._d = new Date(NaN);
+        }
         // Prevent infinite loop in case updateOffset creates new moment
         // objects.
         if (updateInProgress === false) {
             updateInProgress = true;
-            utils_hooks__hooks.updateOffset(this);
+            hooks.updateOffset(this);
             updateInProgress = false;
         }
     }
 
-    function isMoment (obj) {
-        return obj instanceof Moment || (obj != null && obj._isAMomentObject != null);
+    function isMoment(obj) {
+        return (
+            obj instanceof Moment || (obj != null && obj._isAMomentObject != null)
+        );
     }
 
-    function absFloor (number) {
-        if (number < 0) {
-            return Math.ceil(number);
-        } else {
-            return Math.floor(number);
+    function warn(msg) {
+        if (
+            hooks.suppressDeprecationWarnings === false &&
+            typeof console !== 'undefined' &&
+            console.warn
+        ) {
+            console.warn('Deprecation warning: ' + msg);
         }
     }
 
-    function toInt(argumentForCoercion) {
-        var coercedNumber = +argumentForCoercion,
-            value = 0;
-
-        if (coercedNumber !== 0 && isFinite(coercedNumber)) {
-            value = absFloor(coercedNumber);
-        }
-
-        return value;
-    }
+    function deprecate(msg, fn) {
+        var firstTime = true;
 
-    // compare two arrays, return the number of differences
-    function compareArrays(array1, array2, dontConvert) {
-        var len = Math.min(array1.length, array2.length),
-            lengthDiff = Math.abs(array1.length - array2.length),
-            diffs = 0,
-            i;
-        for (i = 0; i < len; i++) {
-            if ((dontConvert && array1[i] !== array2[i]) ||
-                (!dontConvert && toInt(array1[i]) !== toInt(array2[i]))) {
-                diffs++;
+        return extend(function () {
+            if (hooks.deprecationHandler != null) {
+                hooks.deprecationHandler(null, msg);
             }
-        }
-        return diffs + lengthDiff;
-    }
-
-    function Locale() {
-    }
-
-    // internal storage for locale config files
-    var locales = {};
-    var globalLocale;
-
-    function normalizeLocale(key) {
-        return key ? key.toLowerCase().replace('_', '-') : key;
-    }
-
-    // pick the locale from the array
-    // try ['en-au', 'en-gb'] as 'en-au', 'en-gb', 'en', as in move through the list trying each
-    // substring from most specific to least, but move to the next array item if it's a more specific variant than the current root
-    function chooseLocale(names) {
-        var i = 0, j, next, locale, split;
-
-        while (i < names.length) {
-            split = normalizeLocale(names[i]).split('-');
-            j = split.length;
-            next = normalizeLocale(names[i + 1]);
-            next = next ? next.split('-') : null;
-            while (j > 0) {
-                locale = loadLocale(split.slice(0, j).join('-'));
-                if (locale) {
-                    return locale;
-                }
-                if (next && next.length >= j && compareArrays(split, next, true) >= j - 1) {
-                    //the next array item is better than a shallower substring of this one
-                    break;
+            if (firstTime) {
+                var args = [],
+                    arg,
+                    i,
+                    key,
+                    argLen = arguments.length;
+                for (i = 0; i < argLen; i++) {
+                    arg = '';
+                    if (typeof arguments[i] === 'object') {
+                        arg += '\n[' + i + '] ';
+                        for (key in arguments[0]) {
+                            if (hasOwnProp(arguments[0], key)) {
+                                arg += key + ': ' + arguments[0][key] + ', ';
+                            }
+                        }
+                        arg = arg.slice(0, -2); // Remove trailing comma and space
+                    } else {
+                        arg = arguments[i];
+                    }
+                    args.push(arg);
                 }
-                j--;
+                warn(
+                    msg +
+                        '\nArguments: ' +
+                        Array.prototype.slice.call(args).join('') +
+                        '\n' +
+                        new Error().stack
+                );
+                firstTime = false;
             }
-            i++;
-        }
-        return null;
-    }
-
-    function loadLocale(name) {
-        var oldLocale = null;
-        // TODO: Find a better way to register and load all the locales in Node
-        if (!locales[name] && (typeof module !== 'undefined') &&
-                module && module.exports) {
-            try {
-                oldLocale = globalLocale._abbr;
-                require('./locale/' + name);
-                // because defineLocale currently also sets the global locale, we
-                // want to undo that for lazy loaded locales
-                locale_locales__getSetGlobalLocale(oldLocale);
-            } catch (e) { }
-        }
-        return locales[name];
+            return fn.apply(this, arguments);
+        }, fn);
     }
 
-    // This function will load locale and then set the global locale.  If
-    // no arguments are passed in, it will simply return the current global
-    // locale key.
-    function locale_locales__getSetGlobalLocale (key, values) {
-        var data;
-        if (key) {
-            if (isUndefined(values)) {
-                data = locale_locales__getLocale(key);
-            }
-            else {
-                data = defineLocale(key, values);
-            }
+    var deprecations = {};
 
-            if (data) {
-                // moment.duration._locale = moment._locale = data;
-                globalLocale = data;
-            }
+    function deprecateSimple(name, msg) {
+        if (hooks.deprecationHandler != null) {
+            hooks.deprecationHandler(name, msg);
         }
-
-        return globalLocale._abbr;
-    }
-
-    function defineLocale (name, values) {
-        if (values !== null) {
-            values.abbr = name;
-            locales[name] = locales[name] || new Locale();
-            locales[name].set(values);
-
-            // backwards compat for now: also set the locale
-            locale_locales__getSetGlobalLocale(name);
-
-            return locales[name];
-        } else {
-            // useful for testing
-            delete locales[name];
-            return null;
+        if (!deprecations[name]) {
+            warn(msg);
+            deprecations[name] = true;
         }
     }
 
-    // returns locale data
-    function locale_locales__getLocale (key) {
-        var locale;
-
-        if (key && key._locale && key._locale._abbr) {
-            key = key._locale._abbr;
-        }
+    hooks.suppressDeprecationWarnings = false;
+    hooks.deprecationHandler = null;
 
-        if (!key) {
-            return globalLocale;
-        }
+    function isFunction(input) {
+        return (
+            (typeof Function !== 'undefined' && input instanceof Function) ||
+            Object.prototype.toString.call(input) === '[object Function]'
+        );
+    }
 
-        if (!isArray(key)) {
-            //short-circuit everything else
-            locale = loadLocale(key);
-            if (locale) {
-                return locale;
+    function set(config) {
+        var prop, i;
+        for (i in config) {
+            if (hasOwnProp(config, i)) {
+                prop = config[i];
+                if (isFunction(prop)) {
+                    this[i] = prop;
+                } else {
+                    this['_' + i] = prop;
+                }
             }
-            key = [key];
         }
-
-        return chooseLocale(key);
-    }
-
-    var aliases = {};
-
-    function addUnitAlias (unit, shorthand) {
-        var lowerCase = unit.toLowerCase();
-        aliases[lowerCase] = aliases[lowerCase + 's'] = aliases[shorthand] = unit;
-    }
-
-    function normalizeUnits(units) {
-        return typeof units === 'string' ? aliases[units] || aliases[units.toLowerCase()] : undefined;
+        this._config = config;
+        // Lenient ordinal parsing accepts just a number in addition to
+        // number + (possibly) stuff coming from _dayOfMonthOrdinalParse.
+        // TODO: Remove "ordinalParse" fallback in next major release.
+        this._dayOfMonthOrdinalParseLenient = new RegExp(
+            (this._dayOfMonthOrdinalParse.source || this._ordinalParse.source) +
+                '|' +
+                /\d{1,2}/.source
+        );
     }
 
-    function normalizeObjectUnits(inputObject) {
-        var normalizedInput = {},
-            normalizedProp,
+    function mergeConfigs(parentConfig, childConfig) {
+        var res = extend({}, parentConfig),
             prop;
-
-        for (prop in inputObject) {
-            if (hasOwnProp(inputObject, prop)) {
-                normalizedProp = normalizeUnits(prop);
-                if (normalizedProp) {
-                    normalizedInput[normalizedProp] = inputObject[prop];
+        for (prop in childConfig) {
+            if (hasOwnProp(childConfig, prop)) {
+                if (isObject(parentConfig[prop]) && isObject(childConfig[prop])) {
+                    res[prop] = {};
+                    extend(res[prop], parentConfig[prop]);
+                    extend(res[prop], childConfig[prop]);
+                } else if (childConfig[prop] != null) {
+                    res[prop] = childConfig[prop];
+                } else {
+                    delete res[prop];
                 }
             }
         }
-
-        return normalizedInput;
+        for (prop in parentConfig) {
+            if (
+                hasOwnProp(parentConfig, prop) &&
+                !hasOwnProp(childConfig, prop) &&
+                isObject(parentConfig[prop])
+            ) {
+                // make sure changes to properties don't modify parent config
+                res[prop] = extend({}, res[prop]);
+            }
+        }
+        return res;
     }
 
-    function isFunction(input) {
-        return input instanceof Function || Object.prototype.toString.call(input) === '[object Function]';
+    function Locale(config) {
+        if (config != null) {
+            this.set(config);
+        }
     }
 
-    function makeGetSet (unit, keepTime) {
-        return function (value) {
-            if (value != null) {
-                get_set__set(this, unit, value);
-                utils_hooks__hooks.updateOffset(this, keepTime);
-                return this;
-            } else {
-                return get_set__get(this, unit);
+    var keys;
+
+    if (Object.keys) {
+        keys = Object.keys;
+    } else {
+        keys = function (obj) {
+            var i,
+                res = [];
+            for (i in obj) {
+                if (hasOwnProp(obj, i)) {
+                    res.push(i);
+                }
             }
+            return res;
         };
     }
 
-    function get_set__get (mom, unit) {
-        return mom.isValid() ?
-            mom._d['get' + (mom._isUTC ? 'UTC' : '') + unit]() : NaN;
-    }
-
-    function get_set__set (mom, unit, value) {
-        if (mom.isValid()) {
-            mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](value);
-        }
-    }
-
-    // MOMENTS
+    var defaultCalendar = {
+        sameDay: '[Today at] LT',
+        nextDay: '[Tomorrow at] LT',
+        nextWeek: 'dddd [at] LT',
+        lastDay: '[Yesterday at] LT',
+        lastWeek: '[Last] dddd [at] LT',
+        sameElse: 'L',
+    };
 
-    function getSet (units, value) {
-        var unit;
-        if (typeof units === 'object') {
-            for (unit in units) {
-                this.set(unit, units[unit]);
-            }
-        } else {
-            units = normalizeUnits(units);
-            if (isFunction(this[units])) {
-                return this[units](value);
-            }
-        }
-        return this;
+    function calendar(key, mom, now) {
+        var output = this._calendar[key] || this._calendar['sameElse'];
+        return isFunction(output) ? output.call(mom, now) : output;
     }
 
     function zeroFill(number, targetLength, forceSign) {
         var absNumber = '' + Math.abs(number),
             zerosToFill = targetLength - absNumber.length,
             sign = number >= 0;
-        return (sign ? (forceSign ? '+' : '') : '-') +
-            Math.pow(10, Math.max(0, zerosToFill)).toString().substr(1) + absNumber;
+        return (
+            (sign ? (forceSign ? '+' : '') : '-') +
+            Math.pow(10, Math.max(0, zerosToFill)).toString().substr(1) +
+            absNumber
+        );
     }
 
-    var formattingTokens = /(\[[^\[]*\])|(\\)?([Hh]mm(ss)?|Mo|MM?M?M?|Do|DDDo|DD?D?D?|ddd?d?|do?|w[o|w]?|W[o|W]?|Qo?|YYYYYY|YYYYY|YYYY|YY|gg(ggg?)?|GG(GGG?)?|e|E|a|A|hh?|HH?|mm?|ss?|S{1,9}|x|X|zz?|ZZ?|.)/g;
-
-    var localFormattingTokens = /(\[[^\[]*\])|(\\)?(LTS|LT|LL?L?L?|l{1,4})/g;
-
-    var formatFunctions = {};
-
-    var formatTokenFunctions = {};
+    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,
+        localFormattingTokens = /(\[[^\[]*\])|(\\)?(LTS|LT|LL?L?L?|l{1,4})/g,
+        formatFunctions = {},
+        formatTokenFunctions = {};
 
     // token:    'M'
     // padded:   ['MM', 2]
     // ordinal:  'Mo'
     // callback: function () { this.month() + 1 }
-    function addFormatToken (token, padded, ordinal, callback) {
+    function addFormatToken(token, padded, ordinal, callback) {
         var func = callback;
         if (typeof callback === 'string') {
             func = function () {
         }
         if (ordinal) {
             formatTokenFunctions[ordinal] = function () {
-                return this.localeData().ordinal(func.apply(this, arguments), token);
+                return this.localeData().ordinal(
+                    func.apply(this, arguments),
+                    token
+                );
             };
         }
     }
     }
 
     function makeFormatFunction(format) {
-        var array = format.match(formattingTokens), i, length;
+        var array = format.match(formattingTokens),
+            i,
+            length;
 
         for (i = 0, length = array.length; i < length; i++) {
             if (formatTokenFunctions[array[i]]) {
         }
 
         return function (mom) {
-            var output = '';
+            var output = '',
+                i;
             for (i = 0; i < length; i++) {
-                output += array[i] instanceof Function ? array[i].call(mom, format) : array[i];
+                output += isFunction(array[i])
+                    ? array[i].call(mom, format)
+                    : array[i];
             }
             return output;
         };
         }
 
         format = expandFormat(format, m.localeData());
-        formatFunctions[format] = formatFunctions[format] || makeFormatFunction(format);
+        formatFunctions[format] =
+            formatFunctions[format] || makeFormatFunction(format);
 
         return formatFunctions[format](m);
     }
 
         localFormattingTokens.lastIndex = 0;
         while (i >= 0 && localFormattingTokens.test(format)) {
-            format = format.replace(localFormattingTokens, replaceLongDateFormatTokens);
+            format = format.replace(
+                localFormattingTokens,
+                replaceLongDateFormatTokens
+            );
             localFormattingTokens.lastIndex = 0;
             i -= 1;
         }
         return format;
     }
 
-    var match1         = /\d/;            //       0 - 9
-    var match2         = /\d\d/;          //      00 - 99
-    var match3         = /\d{3}/;         //     000 - 999
-    var match4         = /\d{4}/;         //    0000 - 9999
-    var match6         = /[+-]?\d{6}/;    // -999999 - 999999
-    var match1to2      = /\d\d?/;         //       0 - 99
-    var match3to4      = /\d\d\d\d?/;     //     999 - 9999
-    var match5to6      = /\d\d\d\d\d\d?/; //   99999 - 999999
-    var match1to3      = /\d{1,3}/;       //       0 - 999
-    var match1to4      = /\d{1,4}/;       //       0 - 9999
-    var match1to6      = /[+-]?\d{1,6}/;  // -999999 - 999999
+    var defaultLongDateFormat = {
+        LTS: 'h:mm:ss A',
+        LT: 'h:mm A',
+        L: 'MM/DD/YYYY',
+        LL: 'MMMM D, YYYY',
+        LLL: 'MMMM D, YYYY h:mm A',
+        LLLL: 'dddd, MMMM D, YYYY h:mm A',
+    };
+
+    function longDateFormat(key) {
+        var format = this._longDateFormat[key],
+            formatUpper = this._longDateFormat[key.toUpperCase()];
 
-    var matchUnsigned  = /\d+/;           //       0 - inf
-    var matchSigned    = /[+-]?\d+/;      //    -inf - inf
+        if (format || !formatUpper) {
+            return format;
+        }
 
-    var matchOffset    = /Z|[+-]\d\d:?\d\d/gi; // +00:00 -00:00 +0000 -0000 or Z
-    var matchShortOffset = /Z|[+-]\d\d(?::?\d\d)?/gi; // +00 -00 +00:00 -00:00 +0000 -0000 or Z
+        this._longDateFormat[key] = formatUpper
+            .match(formattingTokens)
+            .map(function (tok) {
+                if (
+                    tok === 'MMMM' ||
+                    tok === 'MM' ||
+                    tok === 'DD' ||
+                    tok === 'dddd'
+                ) {
+                    return tok.slice(1);
+                }
+                return tok;
+            })
+            .join('');
 
-    var matchTimestamp = /[+-]?\d+(\.\d{1,3})?/; // 123456789 123456789.123
+        return this._longDateFormat[key];
+    }
 
-    // any word (or two) characters or numbers including two/three word month in arabic.
-    // includes scottish gaelic two word and hyphenated months
-    var matchWord = /[0-9]*['a-z\u00A0-\u05FF\u0700-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+|[\u0600-\u06FF\/]+(\s*?[\u0600-\u06FF]+){1,2}/i;
+    var defaultInvalidDate = 'Invalid date';
 
+    function invalidDate() {
+        return this._invalidDate;
+    }
 
-    var regexes = {};
+    var defaultOrdinal = '%d',
+        defaultDayOfMonthOrdinalParse = /\d{1,2}/;
 
-    function addRegexToken (token, regex, strictRegex) {
-        regexes[token] = isFunction(regex) ? regex : function (isStrict, localeData) {
-            return (isStrict && strictRegex) ? strictRegex : regex;
-        };
+    function ordinal(number) {
+        return this._ordinal.replace('%d', number);
     }
 
-    function getParseRegexForToken (token, config) {
+    var defaultRelativeTime = {
+        future: 'in %s',
+        past: '%s ago',
+        s: 'a few seconds',
+        ss: '%d seconds',
+        m: 'a minute',
+        mm: '%d minutes',
+        h: 'an hour',
+        hh: '%d hours',
+        d: 'a day',
+        dd: '%d days',
+        w: 'a week',
+        ww: '%d weeks',
+        M: 'a month',
+        MM: '%d months',
+        y: 'a year',
+        yy: '%d years',
+    };
+
+    function relativeTime(number, withoutSuffix, string, isFuture) {
+        var output = this._relativeTime[string];
+        return isFunction(output)
+            ? output(number, withoutSuffix, string, isFuture)
+            : output.replace(/%d/i, number);
+    }
+
+    function pastFuture(diff, output) {
+        var format = this._relativeTime[diff > 0 ? 'future' : 'past'];
+        return isFunction(format) ? format(output) : format.replace(/%s/i, output);
+    }
+
+    var aliases = {};
+
+    function addUnitAlias(unit, shorthand) {
+        var lowerCase = unit.toLowerCase();
+        aliases[lowerCase] = aliases[lowerCase + 's'] = aliases[shorthand] = unit;
+    }
+
+    function normalizeUnits(units) {
+        return typeof units === 'string'
+            ? aliases[units] || aliases[units.toLowerCase()]
+            : undefined;
+    }
+
+    function normalizeObjectUnits(inputObject) {
+        var normalizedInput = {},
+            normalizedProp,
+            prop;
+
+        for (prop in inputObject) {
+            if (hasOwnProp(inputObject, prop)) {
+                normalizedProp = normalizeUnits(prop);
+                if (normalizedProp) {
+                    normalizedInput[normalizedProp] = inputObject[prop];
+                }
+            }
+        }
+
+        return normalizedInput;
+    }
+
+    var priorities = {};
+
+    function addUnitPriority(unit, priority) {
+        priorities[unit] = priority;
+    }
+
+    function getPrioritizedUnits(unitsObj) {
+        var units = [],
+            u;
+        for (u in unitsObj) {
+            if (hasOwnProp(unitsObj, u)) {
+                units.push({ unit: u, priority: priorities[u] });
+            }
+        }
+        units.sort(function (a, b) {
+            return a.priority - b.priority;
+        });
+        return units;
+    }
+
+    function isLeapYear(year) {
+        return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
+    }
+
+    function absFloor(number) {
+        if (number < 0) {
+            // -0 -> 0
+            return Math.ceil(number) || 0;
+        } else {
+            return Math.floor(number);
+        }
+    }
+
+    function toInt(argumentForCoercion) {
+        var coercedNumber = +argumentForCoercion,
+            value = 0;
+
+        if (coercedNumber !== 0 && isFinite(coercedNumber)) {
+            value = absFloor(coercedNumber);
+        }
+
+        return value;
+    }
+
+    function makeGetSet(unit, keepTime) {
+        return function (value) {
+            if (value != null) {
+                set$1(this, unit, value);
+                hooks.updateOffset(this, keepTime);
+                return this;
+            } else {
+                return get(this, unit);
+            }
+        };
+    }
+
+    function get(mom, unit) {
+        return mom.isValid()
+            ? mom._d['get' + (mom._isUTC ? 'UTC' : '') + unit]()
+            : NaN;
+    }
+
+    function set$1(mom, unit, value) {
+        if (mom.isValid() && !isNaN(value)) {
+            if (
+                unit === 'FullYear' &&
+                isLeapYear(mom.year()) &&
+                mom.month() === 1 &&
+                mom.date() === 29
+            ) {
+                value = toInt(value);
+                mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](
+                    value,
+                    mom.month(),
+                    daysInMonth(value, mom.month())
+                );
+            } else {
+                mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](value);
+            }
+        }
+    }
+
+    // MOMENTS
+
+    function stringGet(units) {
+        units = normalizeUnits(units);
+        if (isFunction(this[units])) {
+            return this[units]();
+        }
+        return this;
+    }
+
+    function stringSet(units, value) {
+        if (typeof units === 'object') {
+            units = normalizeObjectUnits(units);
+            var prioritized = getPrioritizedUnits(units),
+                i,
+                prioritizedLen = prioritized.length;
+            for (i = 0; i < prioritizedLen; i++) {
+                this[prioritized[i].unit](units[prioritized[i].unit]);
+            }
+        } else {
+            units = normalizeUnits(units);
+            if (isFunction(this[units])) {
+                return this[units](value);
+            }
+        }
+        return this;
+    }
+
+    var match1 = /\d/, //       0 - 9
+        match2 = /\d\d/, //      00 - 99
+        match3 = /\d{3}/, //     000 - 999
+        match4 = /\d{4}/, //    0000 - 9999
+        match6 = /[+-]?\d{6}/, // -999999 - 999999
+        match1to2 = /\d\d?/, //       0 - 99
+        match3to4 = /\d\d\d\d?/, //     999 - 9999
+        match5to6 = /\d\d\d\d\d\d?/, //   99999 - 999999
+        match1to3 = /\d{1,3}/, //       0 - 999
+        match1to4 = /\d{1,4}/, //       0 - 9999
+        match1to6 = /[+-]?\d{1,6}/, // -999999 - 999999
+        matchUnsigned = /\d+/, //       0 - inf
+        matchSigned = /[+-]?\d+/, //    -inf - inf
+        matchOffset = /Z|[+-]\d\d:?\d\d/gi, // +00:00 -00:00 +0000 -0000 or Z
+        matchShortOffset = /Z|[+-]\d\d(?::?\d\d)?/gi, // +00 -00 +00:00 -00:00 +0000 -0000 or Z
+        matchTimestamp = /[+-]?\d+(\.\d{1,3})?/, // 123456789 123456789.123
+        // any word (or two) characters or numbers including two/three word month in arabic.
+        // includes scottish gaelic two word and hyphenated months
+        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,
+        regexes;
+
+    regexes = {};
+
+    function addRegexToken(token, regex, strictRegex) {
+        regexes[token] = isFunction(regex)
+            ? regex
+            : function (isStrict, localeData) {
+                  return isStrict && strictRegex ? strictRegex : regex;
+              };
+    }
+
+    function getParseRegexForToken(token, config) {
         if (!hasOwnProp(regexes, token)) {
             return new RegExp(unescapeFormat(token));
         }
 
     // Code from http://stackoverflow.com/questions/3561493/is-there-a-regexp-escape-function-in-javascript
     function unescapeFormat(s) {
-        return regexEscape(s.replace('\\', '').replace(/\\(\[)|\\(\])|\[([^\]\[]*)\]|\\(.)/g, function (matched, p1, p2, p3, p4) {
-            return p1 || p2 || p3 || p4;
-        }));
+        return regexEscape(
+            s
+                .replace('\\', '')
+                .replace(
+                    /\\(\[)|\\(\])|\[([^\]\[]*)\]|\\(.)/g,
+                    function (matched, p1, p2, p3, p4) {
+                        return p1 || p2 || p3 || p4;
+                    }
+                )
+        );
     }
 
     function regexEscape(s) {
 
     var tokens = {};
 
-    function addParseToken (token, callback) {
-        var i, func = callback;
+    function addParseToken(token, callback) {
+        var i,
+            func = callback,
+            tokenLen;
         if (typeof token === 'string') {
             token = [token];
         }
-        if (typeof callback === 'number') {
+        if (isNumber(callback)) {
             func = function (input, array) {
                 array[callback] = toInt(input);
             };
         }
-        for (i = 0; i < token.length; i++) {
+        tokenLen = token.length;
+        for (i = 0; i < tokenLen; i++) {
             tokens[token[i]] = func;
         }
     }
 
-    function addWeekParseToken (token, callback) {
+    function addWeekParseToken(token, callback) {
         addParseToken(token, function (input, array, config, token) {
             config._w = config._w || {};
             callback(input, config._w, config, token);
         }
     }
 
-    var YEAR = 0;
-    var MONTH = 1;
-    var DATE = 2;
-    var HOUR = 3;
-    var MINUTE = 4;
-    var SECOND = 5;
-    var MILLISECOND = 6;
-    var WEEK = 7;
-    var WEEKDAY = 8;
+    var YEAR = 0,
+        MONTH = 1,
+        DATE = 2,
+        HOUR = 3,
+        MINUTE = 4,
+        SECOND = 5,
+        MILLISECOND = 6,
+        WEEK = 7,
+        WEEKDAY = 8;
+
+    function mod(n, x) {
+        return ((n % x) + x) % x;
+    }
+
+    var indexOf;
+
+    if (Array.prototype.indexOf) {
+        indexOf = Array.prototype.indexOf;
+    } else {
+        indexOf = function (o) {
+            // I know
+            var i;
+            for (i = 0; i < this.length; ++i) {
+                if (this[i] === o) {
+                    return i;
+                }
+            }
+            return -1;
+        };
+    }
 
     function daysInMonth(year, month) {
-        return new Date(Date.UTC(year, month + 1, 0)).getUTCDate();
+        if (isNaN(year) || isNaN(month)) {
+            return NaN;
+        }
+        var modMonth = mod(month, 12);
+        year += (month - modMonth) / 12;
+        return modMonth === 1
+            ? isLeapYear(year)
+                ? 29
+                : 28
+            : 31 - ((modMonth % 7) % 2);
     }
 
     // FORMATTING
 
     addUnitAlias('month', 'M');
 
+    // PRIORITY
+
+    addUnitPriority('month', 8);
+
     // PARSING
 
-    addRegexToken('M',    match1to2);
-    addRegexToken('MM',   match1to2, match2);
-    addRegexToken('MMM',  function (isStrict, locale) {
+    addRegexToken('M', match1to2);
+    addRegexToken('MM', match1to2, match2);
+    addRegexToken('MMM', function (isStrict, locale) {
         return locale.monthsShortRegex(isStrict);
     });
     addRegexToken('MMMM', function (isStrict, locale) {
 
     // LOCALES
 
-    var MONTHS_IN_FORMAT = /D[oD]?(\[[^\[\]]*\]|\s+)+MMMM?/;
-    var defaultLocaleMonths = 'January_February_March_April_May_June_July_August_September_October_November_December'.split('_');
-    function localeMonths (m, format) {
-        return isArray(this._months) ? this._months[m.month()] :
-            this._months[MONTHS_IN_FORMAT.test(format) ? 'format' : 'standalone'][m.month()];
-    }
+    var defaultLocaleMonths =
+            'January_February_March_April_May_June_July_August_September_October_November_December'.split(
+                '_'
+            ),
+        defaultLocaleMonthsShort =
+            'Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec'.split('_'),
+        MONTHS_IN_FORMAT = /D[oD]?(\[[^\[\]]*\]|\s)+MMMM?/,
+        defaultMonthsShortRegex = matchWord,
+        defaultMonthsRegex = matchWord;
+
+    function localeMonths(m, format) {
+        if (!m) {
+            return isArray(this._months)
+                ? this._months
+                : this._months['standalone'];
+        }
+        return isArray(this._months)
+            ? this._months[m.month()]
+            : this._months[
+                  (this._months.isFormat || MONTHS_IN_FORMAT).test(format)
+                      ? 'format'
+                      : 'standalone'
+              ][m.month()];
+    }
+
+    function localeMonthsShort(m, format) {
+        if (!m) {
+            return isArray(this._monthsShort)
+                ? this._monthsShort
+                : this._monthsShort['standalone'];
+        }
+        return isArray(this._monthsShort)
+            ? this._monthsShort[m.month()]
+            : this._monthsShort[
+                  MONTHS_IN_FORMAT.test(format) ? 'format' : 'standalone'
+              ][m.month()];
+    }
+
+    function handleStrictParse(monthName, format, strict) {
+        var i,
+            ii,
+            mom,
+            llc = monthName.toLocaleLowerCase();
+        if (!this._monthsParse) {
+            // this is not used
+            this._monthsParse = [];
+            this._longMonthsParse = [];
+            this._shortMonthsParse = [];
+            for (i = 0; i < 12; ++i) {
+                mom = createUTC([2000, i]);
+                this._shortMonthsParse[i] = this.monthsShort(
+                    mom,
+                    ''
+                ).toLocaleLowerCase();
+                this._longMonthsParse[i] = this.months(mom, '').toLocaleLowerCase();
+            }
+        }
 
-    var defaultLocaleMonthsShort = 'Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec'.split('_');
-    function localeMonthsShort (m, format) {
-        return isArray(this._monthsShort) ? this._monthsShort[m.month()] :
-            this._monthsShort[MONTHS_IN_FORMAT.test(format) ? 'format' : 'standalone'][m.month()];
+        if (strict) {
+            if (format === 'MMM') {
+                ii = indexOf.call(this._shortMonthsParse, llc);
+                return ii !== -1 ? ii : null;
+            } else {
+                ii = indexOf.call(this._longMonthsParse, llc);
+                return ii !== -1 ? ii : null;
+            }
+        } else {
+            if (format === 'MMM') {
+                ii = indexOf.call(this._shortMonthsParse, llc);
+                if (ii !== -1) {
+                    return ii;
+                }
+                ii = indexOf.call(this._longMonthsParse, llc);
+                return ii !== -1 ? ii : null;
+            } else {
+                ii = indexOf.call(this._longMonthsParse, llc);
+                if (ii !== -1) {
+                    return ii;
+                }
+                ii = indexOf.call(this._shortMonthsParse, llc);
+                return ii !== -1 ? ii : null;
+            }
+        }
     }
 
-    function localeMonthsParse (monthName, format, strict) {
+    function localeMonthsParse(monthName, format, strict) {
         var i, mom, regex;
 
+        if (this._monthsParseExact) {
+            return handleStrictParse.call(this, monthName, format, strict);
+        }
+
         if (!this._monthsParse) {
             this._monthsParse = [];
             this._longMonthsParse = [];
             this._shortMonthsParse = [];
         }
 
+        // TODO: add sorting
+        // Sorting makes sure if one month (or abbr) is a prefix of another
+        // see sorting in computeMonthsParse
         for (i = 0; i < 12; i++) {
             // make the regex if we don't have it already
-            mom = create_utc__createUTC([2000, i]);
+            mom = createUTC([2000, i]);
             if (strict && !this._longMonthsParse[i]) {
-                this._longMonthsParse[i] = new RegExp('^' + this.months(mom, '').replace('.', '') + '$', 'i');
-                this._shortMonthsParse[i] = new RegExp('^' + this.monthsShort(mom, '').replace('.', '') + '$', 'i');
+                this._longMonthsParse[i] = new RegExp(
+                    '^' + this.months(mom, '').replace('.', '') + '$',
+                    'i'
+                );
+                this._shortMonthsParse[i] = new RegExp(
+                    '^' + this.monthsShort(mom, '').replace('.', '') + '$',
+                    'i'
+                );
             }
             if (!strict && !this._monthsParse[i]) {
-                regex = '^' + this.months(mom, '') + '|^' + this.monthsShort(mom, '');
+                regex =
+                    '^' + this.months(mom, '') + '|^' + this.monthsShort(mom, '');
                 this._monthsParse[i] = new RegExp(regex.replace('.', ''), 'i');
             }
             // test the regex
-            if (strict && format === 'MMMM' && this._longMonthsParse[i].test(monthName)) {
+            if (
+                strict &&
+                format === 'MMMM' &&
+                this._longMonthsParse[i].test(monthName)
+            ) {
                 return i;
-            } else if (strict && format === 'MMM' && this._shortMonthsParse[i].test(monthName)) {
+            } else if (
+                strict &&
+                format === 'MMM' &&
+                this._shortMonthsParse[i].test(monthName)
+            ) {
                 return i;
             } else if (!strict && this._monthsParse[i].test(monthName)) {
                 return i;
 
     // MOMENTS
 
-    function setMonth (mom, value) {
+    function setMonth(mom, value) {
         var dayOfMonth;
 
         if (!mom.isValid()) {
             return mom;
         }
 
-        // TODO: Move this out of here!
         if (typeof value === 'string') {
-            value = mom.localeData().monthsParse(value);
-            // TODO: Another silent failure?
-            if (typeof value !== 'number') {
-                return mom;
+            if (/^\d+$/.test(value)) {
+                value = toInt(value);
+            } else {
+                value = mom.localeData().monthsParse(value);
+                // TODO: Another silent failure?
+                if (!isNumber(value)) {
+                    return mom;
+                }
             }
         }
 
         return mom;
     }
 
-    function getSetMonth (value) {
+    function getSetMonth(value) {
         if (value != null) {
             setMonth(this, value);
-            utils_hooks__hooks.updateOffset(this, true);
+            hooks.updateOffset(this, true);
             return this;
         } else {
-            return get_set__get(this, 'Month');
+            return get(this, 'Month');
         }
     }
 
-    function getDaysInMonth () {
+    function getDaysInMonth() {
         return daysInMonth(this.year(), this.month());
     }
 
-    var defaultMonthsShortRegex = matchWord;
-    function monthsShortRegex (isStrict) {
+    function monthsShortRegex(isStrict) {
         if (this._monthsParseExact) {
             if (!hasOwnProp(this, '_monthsRegex')) {
                 computeMonthsParse.call(this);
                 return this._monthsShortRegex;
             }
         } else {
-            return this._monthsShortStrictRegex && isStrict ?
-                this._monthsShortStrictRegex : this._monthsShortRegex;
+            if (!hasOwnProp(this, '_monthsShortRegex')) {
+                this._monthsShortRegex = defaultMonthsShortRegex;
+            }
+            return this._monthsShortStrictRegex && isStrict
+                ? this._monthsShortStrictRegex
+                : this._monthsShortRegex;
         }
     }
 
-    var defaultMonthsRegex = matchWord;
-    function monthsRegex (isStrict) {
+    function monthsRegex(isStrict) {
         if (this._monthsParseExact) {
             if (!hasOwnProp(this, '_monthsRegex')) {
                 computeMonthsParse.call(this);
                 return this._monthsRegex;
             }
         } else {
-            return this._monthsStrictRegex && isStrict ?
-                this._monthsStrictRegex : this._monthsRegex;
+            if (!hasOwnProp(this, '_monthsRegex')) {
+                this._monthsRegex = defaultMonthsRegex;
+            }
+            return this._monthsStrictRegex && isStrict
+                ? this._monthsStrictRegex
+                : this._monthsRegex;
         }
     }
 
-    function computeMonthsParse () {
+    function computeMonthsParse() {
         function cmpLenRev(a, b) {
             return b.length - a.length;
         }
 
-        var shortPieces = [], longPieces = [], mixedPieces = [],
-            i, mom;
+        var shortPieces = [],
+            longPieces = [],
+            mixedPieces = [],
+            i,
+            mom;
         for (i = 0; i < 12; i++) {
             // make the regex if we don't have it already
-            mom = create_utc__createUTC([2000, i]);
+            mom = createUTC([2000, i]);
             shortPieces.push(this.monthsShort(mom, ''));
             longPieces.push(this.months(mom, ''));
             mixedPieces.push(this.months(mom, ''));
         for (i = 0; i < 12; i++) {
             shortPieces[i] = regexEscape(shortPieces[i]);
             longPieces[i] = regexEscape(longPieces[i]);
+        }
+        for (i = 0; i < 24; i++) {
             mixedPieces[i] = regexEscape(mixedPieces[i]);
         }
 
         this._monthsRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
         this._monthsShortRegex = this._monthsRegex;
-        this._monthsStrictRegex = new RegExp('^(' + longPieces.join('|') + ')$', 'i');
-        this._monthsShortStrictRegex = new RegExp('^(' + shortPieces.join('|') + ')$', 'i');
+        this._monthsStrictRegex = new RegExp(
+            '^(' + longPieces.join('|') + ')',
+            'i'
+        );
+        this._monthsShortStrictRegex = new RegExp(
+            '^(' + shortPieces.join('|') + ')',
+            'i'
+        );
     }
 
-    function checkOverflow (m) {
-        var overflow;
-        var a = m._a;
+    // FORMATTING
 
-        if (a && getParsingFlags(m).overflow === -2) {
-            overflow =
-                a[MONTH]       < 0 || a[MONTH]       > 11  ? MONTH :
-                a[DATE]        < 1 || a[DATE]        > daysInMonth(a[YEAR], a[MONTH]) ? DATE :
-                a[HOUR]        < 0 || a[HOUR]        > 24 || (a[HOUR] === 24 && (a[MINUTE] !== 0 || a[SECOND] !== 0 || a[MILLISECOND] !== 0)) ? HOUR :
-                a[MINUTE]      < 0 || a[MINUTE]      > 59  ? MINUTE :
-                a[SECOND]      < 0 || a[SECOND]      > 59  ? SECOND :
-                a[MILLISECOND] < 0 || a[MILLISECOND] > 999 ? MILLISECOND :
-                -1;
-
-            if (getParsingFlags(m)._overflowDayOfYear && (overflow < YEAR || overflow > DATE)) {
-                overflow = DATE;
-            }
-            if (getParsingFlags(m)._overflowWeeks && overflow === -1) {
-                overflow = WEEK;
-            }
-            if (getParsingFlags(m)._overflowWeekday && overflow === -1) {
-                overflow = WEEKDAY;
-            }
+    addFormatToken('Y', 0, 0, function () {
+        var y = this.year();
+        return y <= 9999 ? zeroFill(y, 4) : '+' + y;
+    });
 
-            getParsingFlags(m).overflow = overflow;
-        }
+    addFormatToken(0, ['YY', 2], 0, function () {
+        return this.year() % 100;
+    });
 
-        return m;
-    }
+    addFormatToken(0, ['YYYY', 4], 0, 'year');
+    addFormatToken(0, ['YYYYY', 5], 0, 'year');
+    addFormatToken(0, ['YYYYYY', 6, true], 0, 'year');
 
-    function warn(msg) {
-        if (utils_hooks__hooks.suppressDeprecationWarnings === false &&
-                (typeof console !==  'undefined') && console.warn) {
-            console.warn('Deprecation warning: ' + msg);
-        }
-    }
+    // ALIASES
 
-    function deprecate(msg, fn) {
-        var firstTime = true;
+    addUnitAlias('year', 'y');
 
-        return extend(function () {
-            if (firstTime) {
-                warn(msg + '\nArguments: ' + Array.prototype.slice.call(arguments).join(', ') + '\n' + (new Error()).stack);
-                firstTime = false;
-            }
-            return fn.apply(this, arguments);
-        }, fn);
-    }
+    // PRIORITIES
 
-    var deprecations = {};
+    addUnitPriority('year', 1);
 
-    function deprecateSimple(name, msg) {
-        if (!deprecations[name]) {
-            warn(msg);
-            deprecations[name] = true;
-        }
-    }
+    // PARSING
 
-    utils_hooks__hooks.suppressDeprecationWarnings = false;
+    addRegexToken('Y', matchSigned);
+    addRegexToken('YY', match1to2, match2);
+    addRegexToken('YYYY', match1to4, match4);
+    addRegexToken('YYYYY', match1to6, match6);
+    addRegexToken('YYYYYY', match1to6, match6);
 
-    // iso 8601 regex
-    // 0000-00-00 0000-W00 or 0000-W00-0 + T + 00 or 00:00 or 00:00:00 or 00:00:00.000 + +00:00 or +0000 or +00)
-    var extendedIsoRegex = /^\s*((?:[+-]\d{6}|\d{4})-(?:\d\d-\d\d|W\d\d-\d|W\d\d|\d\d\d|\d\d))(?:(T| )(\d\d(?::\d\d(?::\d\d(?:[.,]\d+)?)?)?)([\+\-]\d\d(?::?\d\d)?|\s*Z)?)?/;
-    var basicIsoRegex = /^\s*((?:[+-]\d{6}|\d{4})(?:\d\d\d\d|W\d\d\d|W\d\d|\d\d\d|\d\d))(?:(T| )(\d\d(?:\d\d(?:\d\d(?:[.,]\d+)?)?)?)([\+\-]\d\d(?::?\d\d)?|\s*Z)?)?/;
-
-    var tzRegex = /Z|[+-]\d\d(?::?\d\d)?/;
-
-    var isoDates = [
-        ['YYYYYY-MM-DD', /[+-]\d{6}-\d\d-\d\d/],
-        ['YYYY-MM-DD', /\d{4}-\d\d-\d\d/],
-        ['GGGG-[W]WW-E', /\d{4}-W\d\d-\d/],
-        ['GGGG-[W]WW', /\d{4}-W\d\d/, false],
-        ['YYYY-DDD', /\d{4}-\d{3}/],
-        ['YYYY-MM', /\d{4}-\d\d/, false],
-        ['YYYYYYMMDD', /[+-]\d{10}/],
-        ['YYYYMMDD', /\d{8}/],
-        // YYYYMM is NOT allowed by the standard
-        ['GGGG[W]WWE', /\d{4}W\d{3}/],
-        ['GGGG[W]WW', /\d{4}W\d{2}/, false],
-        ['YYYYDDD', /\d{7}/]
-    ];
+    addParseToken(['YYYYY', 'YYYYYY'], YEAR);
+    addParseToken('YYYY', function (input, array) {
+        array[YEAR] =
+            input.length === 2 ? hooks.parseTwoDigitYear(input) : toInt(input);
+    });
+    addParseToken('YY', function (input, array) {
+        array[YEAR] = hooks.parseTwoDigitYear(input);
+    });
+    addParseToken('Y', function (input, array) {
+        array[YEAR] = parseInt(input, 10);
+    });
 
-    // iso time formats and regexes
-    var isoTimes = [
-        ['HH:mm:ss.SSSS', /\d\d:\d\d:\d\d\.\d+/],
-        ['HH:mm:ss,SSSS', /\d\d:\d\d:\d\d,\d+/],
-        ['HH:mm:ss', /\d\d:\d\d:\d\d/],
-        ['HH:mm', /\d\d:\d\d/],
-        ['HHmmss.SSSS', /\d\d\d\d\d\d\.\d+/],
-        ['HHmmss,SSSS', /\d\d\d\d\d\d,\d+/],
-        ['HHmmss', /\d\d\d\d\d\d/],
-        ['HHmm', /\d\d\d\d/],
-        ['HH', /\d\d/]
-    ];
+    // HELPERS
 
-    var aspNetJsonRegex = /^\/?Date\((\-?\d+)/i;
+    function daysInYear(year) {
+        return isLeapYear(year) ? 366 : 365;
+    }
 
-    // date from iso format
-    function configFromISO(config) {
-        var i, l,
-            string = config._i,
-            match = extendedIsoRegex.exec(string) || basicIsoRegex.exec(string),
-            allowTime, dateFormat, timeFormat, tzFormat;
+    // HOOKS
 
-        if (match) {
-            getParsingFlags(config).iso = true;
+    hooks.parseTwoDigitYear = function (input) {
+        return toInt(input) + (toInt(input) > 68 ? 1900 : 2000);
+    };
 
-            for (i = 0, l = isoDates.length; i < l; i++) {
-                if (isoDates[i][1].exec(match[1])) {
-                    dateFormat = isoDates[i][0];
-                    allowTime = isoDates[i][2] !== false;
-                    break;
-                }
-            }
-            if (dateFormat == null) {
-                config._isValid = false;
-                return;
-            }
-            if (match[3]) {
-                for (i = 0, l = isoTimes.length; i < l; i++) {
-                    if (isoTimes[i][1].exec(match[3])) {
-                        // match[2] should be 'T' or space
-                        timeFormat = (match[2] || ' ') + isoTimes[i][0];
-                        break;
-                    }
-                }
-                if (timeFormat == null) {
-                    config._isValid = false;
-                    return;
-                }
-            }
-            if (!allowTime && timeFormat != null) {
-                config._isValid = false;
-                return;
-            }
-            if (match[4]) {
-                if (tzRegex.exec(match[4])) {
-                    tzFormat = 'Z';
-                } else {
-                    config._isValid = false;
-                    return;
-                }
+    // MOMENTS
+
+    var getSetYear = makeGetSet('FullYear', true);
+
+    function getIsLeapYear() {
+        return isLeapYear(this.year());
+    }
+
+    function createDate(y, m, d, h, M, s, ms) {
+        // can't just apply() to create a date:
+        // https://stackoverflow.com/q/181348
+        var date;
+        // the date constructor remaps years 0-99 to 1900-1999
+        if (y < 100 && y >= 0) {
+            // preserve leap years using a full 400 year cycle, then reset
+            date = new Date(y + 400, m, d, h, M, s, ms);
+            if (isFinite(date.getFullYear())) {
+                date.setFullYear(y);
             }
-            config._f = dateFormat + (timeFormat || '') + (tzFormat || '');
-            configFromStringAndFormat(config);
         } else {
-            config._isValid = false;
+            date = new Date(y, m, d, h, M, s, ms);
         }
-    }
 
-    // date from iso format or fallback
-    function configFromString(config) {
-        var matched = aspNetJsonRegex.exec(config._i);
+        return date;
+    }
 
-        if (matched !== null) {
-            config._d = new Date(+matched[1]);
-            return;
+    function createUTCDate(y) {
+        var date, args;
+        // the Date.UTC function remaps years 0-99 to 1900-1999
+        if (y < 100 && y >= 0) {
+            args = Array.prototype.slice.call(arguments);
+            // preserve leap years using a full 400 year cycle, then reset
+            args[0] = y + 400;
+            date = new Date(Date.UTC.apply(null, args));
+            if (isFinite(date.getUTCFullYear())) {
+                date.setUTCFullYear(y);
+            }
+        } else {
+            date = new Date(Date.UTC.apply(null, arguments));
         }
 
-        configFromISO(config);
-        if (config._isValid === false) {
-            delete config._isValid;
-            utils_hooks__hooks.createFromInputFallback(config);
-        }
+        return date;
     }
 
-    utils_hooks__hooks.createFromInputFallback = deprecate(
-        'moment construction falls back to js Date. This is ' +
-        'discouraged and will be removed in upcoming major ' +
-        'release. Please refer to ' +
-        'https://github.com/moment/moment/issues/1407 for more info.',
-        function (config) {
-            config._d = new Date(config._i + (config._useUTC ? ' UTC' : ''));
+    // start-of-first-week - start-of-year
+    function firstWeekOffset(year, dow, doy) {
+        var // first-week day -- which january is always in the first week (4 for iso, 1 for other)
+            fwd = 7 + dow - doy,
+            // first-week day local weekday -- which local weekday is fwd
+            fwdlw = (7 + createUTCDate(year, 0, fwd).getUTCDay() - dow) % 7;
+
+        return -fwdlw + fwd - 1;
+    }
+
+    // https://en.wikipedia.org/wiki/ISO_week_date#Calculating_a_date_given_the_year.2C_week_number_and_weekday
+    function dayOfYearFromWeeks(year, week, weekday, dow, doy) {
+        var localWeekday = (7 + weekday - dow) % 7,
+            weekOffset = firstWeekOffset(year, dow, doy),
+            dayOfYear = 1 + 7 * (week - 1) + localWeekday + weekOffset,
+            resYear,
+            resDayOfYear;
+
+        if (dayOfYear <= 0) {
+            resYear = year - 1;
+            resDayOfYear = daysInYear(resYear) + dayOfYear;
+        } else if (dayOfYear > daysInYear(year)) {
+            resYear = year + 1;
+            resDayOfYear = dayOfYear - daysInYear(year);
+        } else {
+            resYear = year;
+            resDayOfYear = dayOfYear;
         }
-    );
 
-    function createDate (y, m, d, h, M, s, ms) {
-        //can't just apply() to create a date:
-        //http://stackoverflow.com/questions/181348/instantiating-a-javascript-object-by-calling-prototype-constructor-apply
-        var date = new Date(y, m, d, h, M, s, ms);
+        return {
+            year: resYear,
+            dayOfYear: resDayOfYear,
+        };
+    }
+
+    function weekOfYear(mom, dow, doy) {
+        var weekOffset = firstWeekOffset(mom.year(), dow, doy),
+            week = Math.floor((mom.dayOfYear() - weekOffset - 1) / 7) + 1,
+            resWeek,
+            resYear;
 
-        //the date constructor remaps years 0-99 to 1900-1999
-        if (y < 100 && y >= 0 && isFinite(date.getFullYear())) {
-            date.setFullYear(y);
+        if (week < 1) {
+            resYear = mom.year() - 1;
+            resWeek = week + weeksInYear(resYear, dow, doy);
+        } else if (week > weeksInYear(mom.year(), dow, doy)) {
+            resWeek = week - weeksInYear(mom.year(), dow, doy);
+            resYear = mom.year() + 1;
+        } else {
+            resYear = mom.year();
+            resWeek = week;
         }
-        return date;
+
+        return {
+            week: resWeek,
+            year: resYear,
+        };
+    }
+
+    function weeksInYear(year, dow, doy) {
+        var weekOffset = firstWeekOffset(year, dow, doy),
+            weekOffsetNext = firstWeekOffset(year + 1, dow, doy);
+        return (daysInYear(year) - weekOffset + weekOffsetNext) / 7;
     }
 
-    function createUTCDate (y) {
-        var date = new Date(Date.UTC.apply(null, arguments));
+    // FORMATTING
+
+    addFormatToken('w', ['ww', 2], 'wo', 'week');
+    addFormatToken('W', ['WW', 2], 'Wo', 'isoWeek');
+
+    // ALIASES
+
+    addUnitAlias('week', 'w');
+    addUnitAlias('isoWeek', 'W');
+
+    // PRIORITIES
+
+    addUnitPriority('week', 5);
+    addUnitPriority('isoWeek', 5);
+
+    // PARSING
+
+    addRegexToken('w', match1to2);
+    addRegexToken('ww', match1to2, match2);
+    addRegexToken('W', match1to2);
+    addRegexToken('WW', match1to2, match2);
 
-        //the Date.UTC function remaps years 0-99 to 1900-1999
-        if (y < 100 && y >= 0 && isFinite(date.getUTCFullYear())) {
-            date.setUTCFullYear(y);
+    addWeekParseToken(
+        ['w', 'ww', 'W', 'WW'],
+        function (input, week, config, token) {
+            week[token.substr(0, 1)] = toInt(input);
         }
-        return date;
+    );
+
+    // HELPERS
+
+    // LOCALES
+
+    function localeWeek(mom) {
+        return weekOfYear(mom, this._week.dow, this._week.doy).week;
+    }
+
+    var defaultLocaleWeek = {
+        dow: 0, // Sunday is the first day of the week.
+        doy: 6, // The week that contains Jan 6th is the first week of the year.
+    };
+
+    function localeFirstDayOfWeek() {
+        return this._week.dow;
+    }
+
+    function localeFirstDayOfYear() {
+        return this._week.doy;
+    }
+
+    // MOMENTS
+
+    function getSetWeek(input) {
+        var week = this.localeData().week(this);
+        return input == null ? week : this.add((input - week) * 7, 'd');
+    }
+
+    function getSetISOWeek(input) {
+        var week = weekOfYear(this, 1, 4).week;
+        return input == null ? week : this.add((input - week) * 7, 'd');
     }
 
     // FORMATTING
 
-    addFormatToken('Y', 0, 0, function () {
-        var y = this.year();
-        return y <= 9999 ? '' + y : '+' + y;
+    addFormatToken('d', 0, 'do', 'day');
+
+    addFormatToken('dd', 0, 0, function (format) {
+        return this.localeData().weekdaysMin(this, format);
     });
 
-    addFormatToken(0, ['YY', 2], 0, function () {
-        return this.year() % 100;
+    addFormatToken('ddd', 0, 0, function (format) {
+        return this.localeData().weekdaysShort(this, format);
     });
 
-    addFormatToken(0, ['YYYY',   4],       0, 'year');
-    addFormatToken(0, ['YYYYY',  5],       0, 'year');
-    addFormatToken(0, ['YYYYYY', 6, true], 0, 'year');
+    addFormatToken('dddd', 0, 0, function (format) {
+        return this.localeData().weekdays(this, format);
+    });
+
+    addFormatToken('e', 0, 0, 'weekday');
+    addFormatToken('E', 0, 0, 'isoWeekday');
 
     // ALIASES
 
-    addUnitAlias('year', 'y');
+    addUnitAlias('day', 'd');
+    addUnitAlias('weekday', 'e');
+    addUnitAlias('isoWeekday', 'E');
 
-    // PARSING
+    // PRIORITY
+    addUnitPriority('day', 11);
+    addUnitPriority('weekday', 11);
+    addUnitPriority('isoWeekday', 11);
 
-    addRegexToken('Y',      matchSigned);
-    addRegexToken('YY',     match1to2, match2);
-    addRegexToken('YYYY',   match1to4, match4);
-    addRegexToken('YYYYY',  match1to6, match6);
-    addRegexToken('YYYYYY', match1to6, match6);
+    // PARSING
 
-    addParseToken(['YYYYY', 'YYYYYY'], YEAR);
-    addParseToken('YYYY', function (input, array) {
-        array[YEAR] = input.length === 2 ? utils_hooks__hooks.parseTwoDigitYear(input) : toInt(input);
+    addRegexToken('d', match1to2);
+    addRegexToken('e', match1to2);
+    addRegexToken('E', match1to2);
+    addRegexToken('dd', function (isStrict, locale) {
+        return locale.weekdaysMinRegex(isStrict);
     });
-    addParseToken('YY', function (input, array) {
-        array[YEAR] = utils_hooks__hooks.parseTwoDigitYear(input);
+    addRegexToken('ddd', function (isStrict, locale) {
+        return locale.weekdaysShortRegex(isStrict);
     });
-    addParseToken('Y', function (input, array) {
-        array[YEAR] = parseInt(input, 10);
+    addRegexToken('dddd', function (isStrict, locale) {
+        return locale.weekdaysRegex(isStrict);
+    });
+
+    addWeekParseToken(['dd', 'ddd', 'dddd'], function (input, week, config, token) {
+        var weekday = config._locale.weekdaysParse(input, token, config._strict);
+        // if we didn't get a weekday name, mark the date as invalid
+        if (weekday != null) {
+            week.d = weekday;
+        } else {
+            getParsingFlags(config).invalidWeekday = input;
+        }
+    });
+
+    addWeekParseToken(['d', 'e', 'E'], function (input, week, config, token) {
+        week[token] = toInt(input);
     });
 
     // HELPERS
 
-    function daysInYear(year) {
-        return isLeapYear(year) ? 366 : 365;
+    function parseWeekday(input, locale) {
+        if (typeof input !== 'string') {
+            return input;
+        }
+
+        if (!isNaN(input)) {
+            return parseInt(input, 10);
+        }
+
+        input = locale.weekdaysParse(input);
+        if (typeof input === 'number') {
+            return input;
+        }
+
+        return null;
+    }
+
+    function parseIsoWeekday(input, locale) {
+        if (typeof input === 'string') {
+            return locale.weekdaysParse(input) % 7 || 7;
+        }
+        return isNaN(input) ? null : input;
+    }
+
+    // LOCALES
+    function shiftWeekdays(ws, n) {
+        return ws.slice(n, 7).concat(ws.slice(0, n));
+    }
+
+    var defaultLocaleWeekdays =
+            'Sunday_Monday_Tuesday_Wednesday_Thursday_Friday_Saturday'.split('_'),
+        defaultLocaleWeekdaysShort = 'Sun_Mon_Tue_Wed_Thu_Fri_Sat'.split('_'),
+        defaultLocaleWeekdaysMin = 'Su_Mo_Tu_We_Th_Fr_Sa'.split('_'),
+        defaultWeekdaysRegex = matchWord,
+        defaultWeekdaysShortRegex = matchWord,
+        defaultWeekdaysMinRegex = matchWord;
+
+    function localeWeekdays(m, format) {
+        var weekdays = isArray(this._weekdays)
+            ? this._weekdays
+            : this._weekdays[
+                  m && m !== true && this._weekdays.isFormat.test(format)
+                      ? 'format'
+                      : 'standalone'
+              ];
+        return m === true
+            ? shiftWeekdays(weekdays, this._week.dow)
+            : m
+            ? weekdays[m.day()]
+            : weekdays;
+    }
+
+    function localeWeekdaysShort(m) {
+        return m === true
+            ? shiftWeekdays(this._weekdaysShort, this._week.dow)
+            : m
+            ? this._weekdaysShort[m.day()]
+            : this._weekdaysShort;
+    }
+
+    function localeWeekdaysMin(m) {
+        return m === true
+            ? shiftWeekdays(this._weekdaysMin, this._week.dow)
+            : m
+            ? this._weekdaysMin[m.day()]
+            : this._weekdaysMin;
+    }
+
+    function handleStrictParse$1(weekdayName, format, strict) {
+        var i,
+            ii,
+            mom,
+            llc = weekdayName.toLocaleLowerCase();
+        if (!this._weekdaysParse) {
+            this._weekdaysParse = [];
+            this._shortWeekdaysParse = [];
+            this._minWeekdaysParse = [];
+
+            for (i = 0; i < 7; ++i) {
+                mom = createUTC([2000, 1]).day(i);
+                this._minWeekdaysParse[i] = this.weekdaysMin(
+                    mom,
+                    ''
+                ).toLocaleLowerCase();
+                this._shortWeekdaysParse[i] = this.weekdaysShort(
+                    mom,
+                    ''
+                ).toLocaleLowerCase();
+                this._weekdaysParse[i] = this.weekdays(mom, '').toLocaleLowerCase();
+            }
+        }
+
+        if (strict) {
+            if (format === 'dddd') {
+                ii = indexOf.call(this._weekdaysParse, llc);
+                return ii !== -1 ? ii : null;
+            } else if (format === 'ddd') {
+                ii = indexOf.call(this._shortWeekdaysParse, llc);
+                return ii !== -1 ? ii : null;
+            } else {
+                ii = indexOf.call(this._minWeekdaysParse, llc);
+                return ii !== -1 ? ii : null;
+            }
+        } else {
+            if (format === 'dddd') {
+                ii = indexOf.call(this._weekdaysParse, llc);
+                if (ii !== -1) {
+                    return ii;
+                }
+                ii = indexOf.call(this._shortWeekdaysParse, llc);
+                if (ii !== -1) {
+                    return ii;
+                }
+                ii = indexOf.call(this._minWeekdaysParse, llc);
+                return ii !== -1 ? ii : null;
+            } else if (format === 'ddd') {
+                ii = indexOf.call(this._shortWeekdaysParse, llc);
+                if (ii !== -1) {
+                    return ii;
+                }
+                ii = indexOf.call(this._weekdaysParse, llc);
+                if (ii !== -1) {
+                    return ii;
+                }
+                ii = indexOf.call(this._minWeekdaysParse, llc);
+                return ii !== -1 ? ii : null;
+            } else {
+                ii = indexOf.call(this._minWeekdaysParse, llc);
+                if (ii !== -1) {
+                    return ii;
+                }
+                ii = indexOf.call(this._weekdaysParse, llc);
+                if (ii !== -1) {
+                    return ii;
+                }
+                ii = indexOf.call(this._shortWeekdaysParse, llc);
+                return ii !== -1 ? ii : null;
+            }
+        }
+    }
+
+    function localeWeekdaysParse(weekdayName, format, strict) {
+        var i, mom, regex;
+
+        if (this._weekdaysParseExact) {
+            return handleStrictParse$1.call(this, weekdayName, format, strict);
+        }
+
+        if (!this._weekdaysParse) {
+            this._weekdaysParse = [];
+            this._minWeekdaysParse = [];
+            this._shortWeekdaysParse = [];
+            this._fullWeekdaysParse = [];
+        }
+
+        for (i = 0; i < 7; i++) {
+            // make the regex if we don't have it already
+
+            mom = createUTC([2000, 1]).day(i);
+            if (strict && !this._fullWeekdaysParse[i]) {
+                this._fullWeekdaysParse[i] = new RegExp(
+                    '^' + this.weekdays(mom, '').replace('.', '\\.?') + '$',
+                    'i'
+                );
+                this._shortWeekdaysParse[i] = new RegExp(
+                    '^' + this.weekdaysShort(mom, '').replace('.', '\\.?') + '$',
+                    'i'
+                );
+                this._minWeekdaysParse[i] = new RegExp(
+                    '^' + this.weekdaysMin(mom, '').replace('.', '\\.?') + '$',
+                    'i'
+                );
+            }
+            if (!this._weekdaysParse[i]) {
+                regex =
+                    '^' +
+                    this.weekdays(mom, '') +
+                    '|^' +
+                    this.weekdaysShort(mom, '') +
+                    '|^' +
+                    this.weekdaysMin(mom, '');
+                this._weekdaysParse[i] = new RegExp(regex.replace('.', ''), 'i');
+            }
+            // test the regex
+            if (
+                strict &&
+                format === 'dddd' &&
+                this._fullWeekdaysParse[i].test(weekdayName)
+            ) {
+                return i;
+            } else if (
+                strict &&
+                format === 'ddd' &&
+                this._shortWeekdaysParse[i].test(weekdayName)
+            ) {
+                return i;
+            } else if (
+                strict &&
+                format === 'dd' &&
+                this._minWeekdaysParse[i].test(weekdayName)
+            ) {
+                return i;
+            } else if (!strict && this._weekdaysParse[i].test(weekdayName)) {
+                return i;
+            }
+        }
+    }
+
+    // MOMENTS
+
+    function getSetDayOfWeek(input) {
+        if (!this.isValid()) {
+            return input != null ? this : NaN;
+        }
+        var day = this._isUTC ? this._d.getUTCDay() : this._d.getDay();
+        if (input != null) {
+            input = parseWeekday(input, this.localeData());
+            return this.add(input - day, 'd');
+        } else {
+            return day;
+        }
+    }
+
+    function getSetLocaleDayOfWeek(input) {
+        if (!this.isValid()) {
+            return input != null ? this : NaN;
+        }
+        var weekday = (this.day() + 7 - this.localeData()._week.dow) % 7;
+        return input == null ? weekday : this.add(input - weekday, 'd');
+    }
+
+    function getSetISODayOfWeek(input) {
+        if (!this.isValid()) {
+            return input != null ? this : NaN;
+        }
+
+        // behaves the same as moment#day except
+        // as a getter, returns 7 instead of 0 (1-7 range instead of 0-6)
+        // as a setter, sunday should belong to the previous week.
+
+        if (input != null) {
+            var weekday = parseIsoWeekday(input, this.localeData());
+            return this.day(this.day() % 7 ? weekday : weekday - 7);
+        } else {
+            return this.day() || 7;
+        }
+    }
+
+    function weekdaysRegex(isStrict) {
+        if (this._weekdaysParseExact) {
+            if (!hasOwnProp(this, '_weekdaysRegex')) {
+                computeWeekdaysParse.call(this);
+            }
+            if (isStrict) {
+                return this._weekdaysStrictRegex;
+            } else {
+                return this._weekdaysRegex;
+            }
+        } else {
+            if (!hasOwnProp(this, '_weekdaysRegex')) {
+                this._weekdaysRegex = defaultWeekdaysRegex;
+            }
+            return this._weekdaysStrictRegex && isStrict
+                ? this._weekdaysStrictRegex
+                : this._weekdaysRegex;
+        }
+    }
+
+    function weekdaysShortRegex(isStrict) {
+        if (this._weekdaysParseExact) {
+            if (!hasOwnProp(this, '_weekdaysRegex')) {
+                computeWeekdaysParse.call(this);
+            }
+            if (isStrict) {
+                return this._weekdaysShortStrictRegex;
+            } else {
+                return this._weekdaysShortRegex;
+            }
+        } else {
+            if (!hasOwnProp(this, '_weekdaysShortRegex')) {
+                this._weekdaysShortRegex = defaultWeekdaysShortRegex;
+            }
+            return this._weekdaysShortStrictRegex && isStrict
+                ? this._weekdaysShortStrictRegex
+                : this._weekdaysShortRegex;
+        }
+    }
+
+    function weekdaysMinRegex(isStrict) {
+        if (this._weekdaysParseExact) {
+            if (!hasOwnProp(this, '_weekdaysRegex')) {
+                computeWeekdaysParse.call(this);
+            }
+            if (isStrict) {
+                return this._weekdaysMinStrictRegex;
+            } else {
+                return this._weekdaysMinRegex;
+            }
+        } else {
+            if (!hasOwnProp(this, '_weekdaysMinRegex')) {
+                this._weekdaysMinRegex = defaultWeekdaysMinRegex;
+            }
+            return this._weekdaysMinStrictRegex && isStrict
+                ? this._weekdaysMinStrictRegex
+                : this._weekdaysMinRegex;
+        }
+    }
+
+    function computeWeekdaysParse() {
+        function cmpLenRev(a, b) {
+            return b.length - a.length;
+        }
+
+        var minPieces = [],
+            shortPieces = [],
+            longPieces = [],
+            mixedPieces = [],
+            i,
+            mom,
+            minp,
+            shortp,
+            longp;
+        for (i = 0; i < 7; i++) {
+            // make the regex if we don't have it already
+            mom = createUTC([2000, 1]).day(i);
+            minp = regexEscape(this.weekdaysMin(mom, ''));
+            shortp = regexEscape(this.weekdaysShort(mom, ''));
+            longp = regexEscape(this.weekdays(mom, ''));
+            minPieces.push(minp);
+            shortPieces.push(shortp);
+            longPieces.push(longp);
+            mixedPieces.push(minp);
+            mixedPieces.push(shortp);
+            mixedPieces.push(longp);
+        }
+        // Sorting makes sure if one weekday (or abbr) is a prefix of another it
+        // will match the longer piece.
+        minPieces.sort(cmpLenRev);
+        shortPieces.sort(cmpLenRev);
+        longPieces.sort(cmpLenRev);
+        mixedPieces.sort(cmpLenRev);
+
+        this._weekdaysRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
+        this._weekdaysShortRegex = this._weekdaysRegex;
+        this._weekdaysMinRegex = this._weekdaysRegex;
+
+        this._weekdaysStrictRegex = new RegExp(
+            '^(' + longPieces.join('|') + ')',
+            'i'
+        );
+        this._weekdaysShortStrictRegex = new RegExp(
+            '^(' + shortPieces.join('|') + ')',
+            'i'
+        );
+        this._weekdaysMinStrictRegex = new RegExp(
+            '^(' + minPieces.join('|') + ')',
+            'i'
+        );
+    }
+
+    // FORMATTING
+
+    function hFormat() {
+        return this.hours() % 12 || 12;
+    }
+
+    function kFormat() {
+        return this.hours() || 24;
+    }
+
+    addFormatToken('H', ['HH', 2], 0, 'hour');
+    addFormatToken('h', ['hh', 2], 0, hFormat);
+    addFormatToken('k', ['kk', 2], 0, kFormat);
+
+    addFormatToken('hmm', 0, 0, function () {
+        return '' + hFormat.apply(this) + zeroFill(this.minutes(), 2);
+    });
+
+    addFormatToken('hmmss', 0, 0, function () {
+        return (
+            '' +
+            hFormat.apply(this) +
+            zeroFill(this.minutes(), 2) +
+            zeroFill(this.seconds(), 2)
+        );
+    });
+
+    addFormatToken('Hmm', 0, 0, function () {
+        return '' + this.hours() + zeroFill(this.minutes(), 2);
+    });
+
+    addFormatToken('Hmmss', 0, 0, function () {
+        return (
+            '' +
+            this.hours() +
+            zeroFill(this.minutes(), 2) +
+            zeroFill(this.seconds(), 2)
+        );
+    });
+
+    function meridiem(token, lowercase) {
+        addFormatToken(token, 0, 0, function () {
+            return this.localeData().meridiem(
+                this.hours(),
+                this.minutes(),
+                lowercase
+            );
+        });
+    }
+
+    meridiem('a', true);
+    meridiem('A', false);
+
+    // ALIASES
+
+    addUnitAlias('hour', 'h');
+
+    // PRIORITY
+    addUnitPriority('hour', 13);
+
+    // PARSING
+
+    function matchMeridiem(isStrict, locale) {
+        return locale._meridiemParse;
+    }
+
+    addRegexToken('a', matchMeridiem);
+    addRegexToken('A', matchMeridiem);
+    addRegexToken('H', match1to2);
+    addRegexToken('h', match1to2);
+    addRegexToken('k', match1to2);
+    addRegexToken('HH', match1to2, match2);
+    addRegexToken('hh', match1to2, match2);
+    addRegexToken('kk', match1to2, match2);
+
+    addRegexToken('hmm', match3to4);
+    addRegexToken('hmmss', match5to6);
+    addRegexToken('Hmm', match3to4);
+    addRegexToken('Hmmss', match5to6);
+
+    addParseToken(['H', 'HH'], HOUR);
+    addParseToken(['k', 'kk'], function (input, array, config) {
+        var kInput = toInt(input);
+        array[HOUR] = kInput === 24 ? 0 : kInput;
+    });
+    addParseToken(['a', 'A'], function (input, array, config) {
+        config._isPm = config._locale.isPM(input);
+        config._meridiem = input;
+    });
+    addParseToken(['h', 'hh'], function (input, array, config) {
+        array[HOUR] = toInt(input);
+        getParsingFlags(config).bigHour = true;
+    });
+    addParseToken('hmm', function (input, array, config) {
+        var pos = input.length - 2;
+        array[HOUR] = toInt(input.substr(0, pos));
+        array[MINUTE] = toInt(input.substr(pos));
+        getParsingFlags(config).bigHour = true;
+    });
+    addParseToken('hmmss', function (input, array, config) {
+        var pos1 = input.length - 4,
+            pos2 = input.length - 2;
+        array[HOUR] = toInt(input.substr(0, pos1));
+        array[MINUTE] = toInt(input.substr(pos1, 2));
+        array[SECOND] = toInt(input.substr(pos2));
+        getParsingFlags(config).bigHour = true;
+    });
+    addParseToken('Hmm', function (input, array, config) {
+        var pos = input.length - 2;
+        array[HOUR] = toInt(input.substr(0, pos));
+        array[MINUTE] = toInt(input.substr(pos));
+    });
+    addParseToken('Hmmss', function (input, array, config) {
+        var pos1 = input.length - 4,
+            pos2 = input.length - 2;
+        array[HOUR] = toInt(input.substr(0, pos1));
+        array[MINUTE] = toInt(input.substr(pos1, 2));
+        array[SECOND] = toInt(input.substr(pos2));
+    });
+
+    // LOCALES
+
+    function localeIsPM(input) {
+        // IE8 Quirks Mode & IE7 Standards Mode do not allow accessing strings like arrays
+        // Using charAt should be more compatible.
+        return (input + '').toLowerCase().charAt(0) === 'p';
+    }
+
+    var defaultLocaleMeridiemParse = /[ap]\.?m?\.?/i,
+        // Setting the hour should keep the time, because the user explicitly
+        // specified which hour they want. So trying to maintain the same hour (in
+        // a new timezone) makes sense. Adding/subtracting hours does not follow
+        // this rule.
+        getSetHour = makeGetSet('Hours', true);
+
+    function localeMeridiem(hours, minutes, isLower) {
+        if (hours > 11) {
+            return isLower ? 'pm' : 'PM';
+        } else {
+            return isLower ? 'am' : 'AM';
+        }
+    }
+
+    var baseConfig = {
+        calendar: defaultCalendar,
+        longDateFormat: defaultLongDateFormat,
+        invalidDate: defaultInvalidDate,
+        ordinal: defaultOrdinal,
+        dayOfMonthOrdinalParse: defaultDayOfMonthOrdinalParse,
+        relativeTime: defaultRelativeTime,
+
+        months: defaultLocaleMonths,
+        monthsShort: defaultLocaleMonthsShort,
+
+        week: defaultLocaleWeek,
+
+        weekdays: defaultLocaleWeekdays,
+        weekdaysMin: defaultLocaleWeekdaysMin,
+        weekdaysShort: defaultLocaleWeekdaysShort,
+
+        meridiemParse: defaultLocaleMeridiemParse,
+    };
+
+    // internal storage for locale config files
+    var locales = {},
+        localeFamilies = {},
+        globalLocale;
+
+    function commonPrefix(arr1, arr2) {
+        var i,
+            minl = Math.min(arr1.length, arr2.length);
+        for (i = 0; i < minl; i += 1) {
+            if (arr1[i] !== arr2[i]) {
+                return i;
+            }
+        }
+        return minl;
+    }
+
+    function normalizeLocale(key) {
+        return key ? key.toLowerCase().replace('_', '-') : key;
+    }
+
+    // pick the locale from the array
+    // try ['en-au', 'en-gb'] as 'en-au', 'en-gb', 'en', as in move through the list trying each
+    // substring from most specific to least, but move to the next array item if it's a more specific variant than the current root
+    function chooseLocale(names) {
+        var i = 0,
+            j,
+            next,
+            locale,
+            split;
+
+        while (i < names.length) {
+            split = normalizeLocale(names[i]).split('-');
+            j = split.length;
+            next = normalizeLocale(names[i + 1]);
+            next = next ? next.split('-') : null;
+            while (j > 0) {
+                locale = loadLocale(split.slice(0, j).join('-'));
+                if (locale) {
+                    return locale;
+                }
+                if (
+                    next &&
+                    next.length >= j &&
+                    commonPrefix(split, next) >= j - 1
+                ) {
+                    //the next array item is better than a shallower substring of this one
+                    break;
+                }
+                j--;
+            }
+            i++;
+        }
+        return globalLocale;
+    }
+
+    function isLocaleNameSane(name) {
+        // Prevent names that look like filesystem paths, i.e contain '/' or '\'
+        return name.match('^[^/\\\\]*$') != null;
+    }
+
+    function loadLocale(name) {
+        var oldLocale = null,
+            aliasedRequire;
+        // TODO: Find a better way to register and load all the locales in Node
+        if (
+            locales[name] === undefined &&
+            typeof module !== 'undefined' &&
+            module &&
+            module.exports &&
+            isLocaleNameSane(name)
+        ) {
+            try {
+                oldLocale = globalLocale._abbr;
+                aliasedRequire = require;
+                aliasedRequire('./locale/' + name);
+                getSetGlobalLocale(oldLocale);
+            } catch (e) {
+                // mark as not found to avoid repeating expensive file require call causing high CPU
+                // when trying to find en-US, en_US, en-us for every format call
+                locales[name] = null; // null means not found
+            }
+        }
+        return locales[name];
+    }
+
+    // This function will load locale and then set the global locale.  If
+    // no arguments are passed in, it will simply return the current global
+    // locale key.
+    function getSetGlobalLocale(key, values) {
+        var data;
+        if (key) {
+            if (isUndefined(values)) {
+                data = getLocale(key);
+            } else {
+                data = defineLocale(key, values);
+            }
+
+            if (data) {
+                // moment.duration._locale = moment._locale = data;
+                globalLocale = data;
+            } else {
+                if (typeof console !== 'undefined' && console.warn) {
+                    //warn user if arguments are passed but the locale could not be set
+                    console.warn(
+                        'Locale ' + key + ' not found. Did you forget to load it?'
+                    );
+                }
+            }
+        }
+
+        return globalLocale._abbr;
+    }
+
+    function defineLocale(name, config) {
+        if (config !== null) {
+            var locale,
+                parentConfig = baseConfig;
+            config.abbr = name;
+            if (locales[name] != null) {
+                deprecateSimple(
+                    'defineLocaleOverride',
+                    'use moment.updateLocale(localeName, config) to change ' +
+                        'an existing locale. moment.defineLocale(localeName, ' +
+                        'config) should only be used for creating a new locale ' +
+                        'See http://momentjs.com/guides/#/warnings/define-locale/ for more info.'
+                );
+                parentConfig = locales[name]._config;
+            } else if (config.parentLocale != null) {
+                if (locales[config.parentLocale] != null) {
+                    parentConfig = locales[config.parentLocale]._config;
+                } else {
+                    locale = loadLocale(config.parentLocale);
+                    if (locale != null) {
+                        parentConfig = locale._config;
+                    } else {
+                        if (!localeFamilies[config.parentLocale]) {
+                            localeFamilies[config.parentLocale] = [];
+                        }
+                        localeFamilies[config.parentLocale].push({
+                            name: name,
+                            config: config,
+                        });
+                        return null;
+                    }
+                }
+            }
+            locales[name] = new Locale(mergeConfigs(parentConfig, config));
+
+            if (localeFamilies[name]) {
+                localeFamilies[name].forEach(function (x) {
+                    defineLocale(x.name, x.config);
+                });
+            }
+
+            // backwards compat for now: also set the locale
+            // make sure we set the locale AFTER all child locales have been
+            // created, so we won't end up with the child locale set.
+            getSetGlobalLocale(name);
+
+            return locales[name];
+        } else {
+            // useful for testing
+            delete locales[name];
+            return null;
+        }
+    }
+
+    function updateLocale(name, config) {
+        if (config != null) {
+            var locale,
+                tmpLocale,
+                parentConfig = baseConfig;
+
+            if (locales[name] != null && locales[name].parentLocale != null) {
+                // Update existing child locale in-place to avoid memory-leaks
+                locales[name].set(mergeConfigs(locales[name]._config, config));
+            } else {
+                // MERGE
+                tmpLocale = loadLocale(name);
+                if (tmpLocale != null) {
+                    parentConfig = tmpLocale._config;
+                }
+                config = mergeConfigs(parentConfig, config);
+                if (tmpLocale == null) {
+                    // updateLocale is called for creating a new locale
+                    // Set abbr so it will have a name (getters return
+                    // undefined otherwise).
+                    config.abbr = name;
+                }
+                locale = new Locale(config);
+                locale.parentLocale = locales[name];
+                locales[name] = locale;
+            }
+
+            // backwards compat for now: also set the locale
+            getSetGlobalLocale(name);
+        } else {
+            // pass null for config to unupdate, useful for tests
+            if (locales[name] != null) {
+                if (locales[name].parentLocale != null) {
+                    locales[name] = locales[name].parentLocale;
+                    if (name === getSetGlobalLocale()) {
+                        getSetGlobalLocale(name);
+                    }
+                } else if (locales[name] != null) {
+                    delete locales[name];
+                }
+            }
+        }
+        return locales[name];
+    }
+
+    // returns locale data
+    function getLocale(key) {
+        var locale;
+
+        if (key && key._locale && key._locale._abbr) {
+            key = key._locale._abbr;
+        }
+
+        if (!key) {
+            return globalLocale;
+        }
+
+        if (!isArray(key)) {
+            //short-circuit everything else
+            locale = loadLocale(key);
+            if (locale) {
+                return locale;
+            }
+            key = [key];
+        }
+
+        return chooseLocale(key);
+    }
+
+    function listLocales() {
+        return keys(locales);
+    }
+
+    function checkOverflow(m) {
+        var overflow,
+            a = m._a;
+
+        if (a && getParsingFlags(m).overflow === -2) {
+            overflow =
+                a[MONTH] < 0 || a[MONTH] > 11
+                    ? MONTH
+                    : a[DATE] < 1 || a[DATE] > daysInMonth(a[YEAR], a[MONTH])
+                    ? DATE
+                    : a[HOUR] < 0 ||
+                      a[HOUR] > 24 ||
+                      (a[HOUR] === 24 &&
+                          (a[MINUTE] !== 0 ||
+                              a[SECOND] !== 0 ||
+                              a[MILLISECOND] !== 0))
+                    ? HOUR
+                    : a[MINUTE] < 0 || a[MINUTE] > 59
+                    ? MINUTE
+                    : a[SECOND] < 0 || a[SECOND] > 59
+                    ? SECOND
+                    : a[MILLISECOND] < 0 || a[MILLISECOND] > 999
+                    ? MILLISECOND
+                    : -1;
+
+            if (
+                getParsingFlags(m)._overflowDayOfYear &&
+                (overflow < YEAR || overflow > DATE)
+            ) {
+                overflow = DATE;
+            }
+            if (getParsingFlags(m)._overflowWeeks && overflow === -1) {
+                overflow = WEEK;
+            }
+            if (getParsingFlags(m)._overflowWeekday && overflow === -1) {
+                overflow = WEEKDAY;
+            }
+
+            getParsingFlags(m).overflow = overflow;
+        }
+
+        return m;
+    }
+
+    // iso 8601 regex
+    // 0000-00-00 0000-W00 or 0000-W00-0 + T + 00 or 00:00 or 00:00:00 or 00:00:00.000 + +00:00 or +0000 or +00)
+    var extendedIsoRegex =
+            /^\s*((?:[+-]\d{6}|\d{4})-(?:\d\d-\d\d|W\d\d-\d|W\d\d|\d\d\d|\d\d))(?:(T| )(\d\d(?::\d\d(?::\d\d(?:[.,]\d+)?)?)?)([+-]\d\d(?::?\d\d)?|\s*Z)?)?$/,
+        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)?)?$/,
+        tzRegex = /Z|[+-]\d\d(?::?\d\d)?/,
+        isoDates = [
+            ['YYYYYY-MM-DD', /[+-]\d{6}-\d\d-\d\d/],
+            ['YYYY-MM-DD', /\d{4}-\d\d-\d\d/],
+            ['GGGG-[W]WW-E', /\d{4}-W\d\d-\d/],
+            ['GGGG-[W]WW', /\d{4}-W\d\d/, false],
+            ['YYYY-DDD', /\d{4}-\d{3}/],
+            ['YYYY-MM', /\d{4}-\d\d/, false],
+            ['YYYYYYMMDD', /[+-]\d{10}/],
+            ['YYYYMMDD', /\d{8}/],
+            ['GGGG[W]WWE', /\d{4}W\d{3}/],
+            ['GGGG[W]WW', /\d{4}W\d{2}/, false],
+            ['YYYYDDD', /\d{7}/],
+            ['YYYYMM', /\d{6}/, false],
+            ['YYYY', /\d{4}/, false],
+        ],
+        // iso time formats and regexes
+        isoTimes = [
+            ['HH:mm:ss.SSSS', /\d\d:\d\d:\d\d\.\d+/],
+            ['HH:mm:ss,SSSS', /\d\d:\d\d:\d\d,\d+/],
+            ['HH:mm:ss', /\d\d:\d\d:\d\d/],
+            ['HH:mm', /\d\d:\d\d/],
+            ['HHmmss.SSSS', /\d\d\d\d\d\d\.\d+/],
+            ['HHmmss,SSSS', /\d\d\d\d\d\d,\d+/],
+            ['HHmmss', /\d\d\d\d\d\d/],
+            ['HHmm', /\d\d\d\d/],
+            ['HH', /\d\d/],
+        ],
+        aspNetJsonRegex = /^\/?Date\((-?\d+)/i,
+        // RFC 2822 regex: For details see https://tools.ietf.org/html/rfc2822#section-3.3
+        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}))$/,
+        obsOffsets = {
+            UT: 0,
+            GMT: 0,
+            EDT: -4 * 60,
+            EST: -5 * 60,
+            CDT: -5 * 60,
+            CST: -6 * 60,
+            MDT: -6 * 60,
+            MST: -7 * 60,
+            PDT: -7 * 60,
+            PST: -8 * 60,
+        };
+
+    // date from iso format
+    function configFromISO(config) {
+        var i,
+            l,
+            string = config._i,
+            match = extendedIsoRegex.exec(string) || basicIsoRegex.exec(string),
+            allowTime,
+            dateFormat,
+            timeFormat,
+            tzFormat,
+            isoDatesLen = isoDates.length,
+            isoTimesLen = isoTimes.length;
+
+        if (match) {
+            getParsingFlags(config).iso = true;
+            for (i = 0, l = isoDatesLen; i < l; i++) {
+                if (isoDates[i][1].exec(match[1])) {
+                    dateFormat = isoDates[i][0];
+                    allowTime = isoDates[i][2] !== false;
+                    break;
+                }
+            }
+            if (dateFormat == null) {
+                config._isValid = false;
+                return;
+            }
+            if (match[3]) {
+                for (i = 0, l = isoTimesLen; i < l; i++) {
+                    if (isoTimes[i][1].exec(match[3])) {
+                        // match[2] should be 'T' or space
+                        timeFormat = (match[2] || ' ') + isoTimes[i][0];
+                        break;
+                    }
+                }
+                if (timeFormat == null) {
+                    config._isValid = false;
+                    return;
+                }
+            }
+            if (!allowTime && timeFormat != null) {
+                config._isValid = false;
+                return;
+            }
+            if (match[4]) {
+                if (tzRegex.exec(match[4])) {
+                    tzFormat = 'Z';
+                } else {
+                    config._isValid = false;
+                    return;
+                }
+            }
+            config._f = dateFormat + (timeFormat || '') + (tzFormat || '');
+            configFromStringAndFormat(config);
+        } else {
+            config._isValid = false;
+        }
     }
 
-    function isLeapYear(year) {
-        return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
+    function extractFromRFC2822Strings(
+        yearStr,
+        monthStr,
+        dayStr,
+        hourStr,
+        minuteStr,
+        secondStr
+    ) {
+        var result = [
+            untruncateYear(yearStr),
+            defaultLocaleMonthsShort.indexOf(monthStr),
+            parseInt(dayStr, 10),
+            parseInt(hourStr, 10),
+            parseInt(minuteStr, 10),
+        ];
+
+        if (secondStr) {
+            result.push(parseInt(secondStr, 10));
+        }
+
+        return result;
+    }
+
+    function untruncateYear(yearStr) {
+        var year = parseInt(yearStr, 10);
+        if (year <= 49) {
+            return 2000 + year;
+        } else if (year <= 999) {
+            return 1900 + year;
+        }
+        return year;
+    }
+
+    function preprocessRFC2822(s) {
+        // Remove comments and folding whitespace and replace multiple-spaces with a single space
+        return s
+            .replace(/\([^)]*\)|[\n\t]/g, ' ')
+            .replace(/(\s\s+)/g, ' ')
+            .replace(/^\s\s*/, '')
+            .replace(/\s\s*$/, '');
+    }
+
+    function checkWeekday(weekdayStr, parsedInput, config) {
+        if (weekdayStr) {
+            // TODO: Replace the vanilla JS Date object with an independent day-of-week check.
+            var weekdayProvided = defaultLocaleWeekdaysShort.indexOf(weekdayStr),
+                weekdayActual = new Date(
+                    parsedInput[0],
+                    parsedInput[1],
+                    parsedInput[2]
+                ).getDay();
+            if (weekdayProvided !== weekdayActual) {
+                getParsingFlags(config).weekdayMismatch = true;
+                config._isValid = false;
+                return false;
+            }
+        }
+        return true;
     }
 
-    // HOOKS
-
-    utils_hooks__hooks.parseTwoDigitYear = function (input) {
-        return toInt(input) + (toInt(input) > 68 ? 1900 : 2000);
-    };
-
-    // MOMENTS
-
-    var getSetYear = makeGetSet('FullYear', false);
-
-    function getIsLeapYear () {
-        return isLeapYear(this.year());
+    function calculateOffset(obsOffset, militaryOffset, numOffset) {
+        if (obsOffset) {
+            return obsOffsets[obsOffset];
+        } else if (militaryOffset) {
+            // the only allowed military tz is Z
+            return 0;
+        } else {
+            var hm = parseInt(numOffset, 10),
+                m = hm % 100,
+                h = (hm - m) / 100;
+            return h * 60 + m;
+        }
     }
 
-    // start-of-first-week - start-of-year
-    function firstWeekOffset(year, dow, doy) {
-        var // first-week day -- which january is always in the first week (4 for iso, 1 for other)
-            fwd = 7 + dow - doy,
-            // first-week day local weekday -- which local weekday is fwd
-            fwdlw = (7 + createUTCDate(year, 0, fwd).getUTCDay() - dow) % 7;
+    // date and time from ref 2822 format
+    function configFromRFC2822(config) {
+        var match = rfc2822.exec(preprocessRFC2822(config._i)),
+            parsedArray;
+        if (match) {
+            parsedArray = extractFromRFC2822Strings(
+                match[4],
+                match[3],
+                match[2],
+                match[5],
+                match[6],
+                match[7]
+            );
+            if (!checkWeekday(match[1], parsedArray, config)) {
+                return;
+            }
 
-        return -fwdlw + fwd - 1;
-    }
+            config._a = parsedArray;
+            config._tzm = calculateOffset(match[8], match[9], match[10]);
 
-    //http://en.wikipedia.org/wiki/ISO_week_date#Calculating_a_date_given_the_year.2C_week_number_and_weekday
-    function dayOfYearFromWeeks(year, week, weekday, dow, doy) {
-        var localWeekday = (7 + weekday - dow) % 7,
-            weekOffset = firstWeekOffset(year, dow, doy),
-            dayOfYear = 1 + 7 * (week - 1) + localWeekday + weekOffset,
-            resYear, resDayOfYear;
+            config._d = createUTCDate.apply(null, config._a);
+            config._d.setUTCMinutes(config._d.getUTCMinutes() - config._tzm);
 
-        if (dayOfYear <= 0) {
-            resYear = year - 1;
-            resDayOfYear = daysInYear(resYear) + dayOfYear;
-        } else if (dayOfYear > daysInYear(year)) {
-            resYear = year + 1;
-            resDayOfYear = dayOfYear - daysInYear(year);
+            getParsingFlags(config).rfc2822 = true;
         } else {
-            resYear = year;
-            resDayOfYear = dayOfYear;
+            config._isValid = false;
         }
-
-        return {
-            year: resYear,
-            dayOfYear: resDayOfYear
-        };
     }
 
-    function weekOfYear(mom, dow, doy) {
-        var weekOffset = firstWeekOffset(mom.year(), dow, doy),
-            week = Math.floor((mom.dayOfYear() - weekOffset - 1) / 7) + 1,
-            resWeek, resYear;
+    // date from 1) ASP.NET, 2) ISO, 3) RFC 2822 formats, or 4) optional fallback if parsing isn't strict
+    function configFromString(config) {
+        var matched = aspNetJsonRegex.exec(config._i);
+        if (matched !== null) {
+            config._d = new Date(+matched[1]);
+            return;
+        }
 
-        if (week < 1) {
-            resYear = mom.year() - 1;
-            resWeek = week + weeksInYear(resYear, dow, doy);
-        } else if (week > weeksInYear(mom.year(), dow, doy)) {
-            resWeek = week - weeksInYear(mom.year(), dow, doy);
-            resYear = mom.year() + 1;
+        configFromISO(config);
+        if (config._isValid === false) {
+            delete config._isValid;
         } else {
-            resYear = mom.year();
-            resWeek = week;
+            return;
         }
 
-        return {
-            week: resWeek,
-            year: resYear
-        };
-    }
+        configFromRFC2822(config);
+        if (config._isValid === false) {
+            delete config._isValid;
+        } else {
+            return;
+        }
 
-    function weeksInYear(year, dow, doy) {
-        var weekOffset = firstWeekOffset(year, dow, doy),
-            weekOffsetNext = firstWeekOffset(year + 1, dow, doy);
-        return (daysInYear(year) - weekOffset + weekOffsetNext) / 7;
+        if (config._strict) {
+            config._isValid = false;
+        } else {
+            // Final attempt, use Input Fallback
+            hooks.createFromInputFallback(config);
+        }
     }
 
+    hooks.createFromInputFallback = deprecate(
+        'value provided is not in a recognized RFC2822 or ISO format. moment construction falls back to js Date(), ' +
+            'which is not reliable across all browsers and versions. Non RFC2822/ISO date formats are ' +
+            'discouraged. Please refer to http://momentjs.com/guides/#/warnings/js-date/ for more info.',
+        function (config) {
+            config._d = new Date(config._i + (config._useUTC ? ' UTC' : ''));
+        }
+    );
+
     // Pick the first defined of two or three arguments.
     function defaults(a, b, c) {
         if (a != null) {
 
     function currentDateArray(config) {
         // hooks is actually the exported moment object
-        var nowValue = new Date(utils_hooks__hooks.now());
+        var nowValue = new Date(hooks.now());
         if (config._useUTC) {
-            return [nowValue.getUTCFullYear(), nowValue.getUTCMonth(), nowValue.getUTCDate()];
+            return [
+                nowValue.getUTCFullYear(),
+                nowValue.getUTCMonth(),
+                nowValue.getUTCDate(),
+            ];
         }
         return [nowValue.getFullYear(), nowValue.getMonth(), nowValue.getDate()];
     }
     // the array should mirror the parameters below
     // note: all values past the year are optional and will default to the lowest possible value.
     // [year, month, day , hour, minute, second, millisecond]
-    function configFromArray (config) {
-        var i, date, input = [], currentDate, yearToUse;
+    function configFromArray(config) {
+        var i,
+            date,
+            input = [],
+            currentDate,
+            expectedWeekday,
+            yearToUse;
 
         if (config._d) {
             return;
         }
 
         //if the day of the year is set, figure out what it is
-        if (config._dayOfYear) {
+        if (config._dayOfYear != null) {
             yearToUse = defaults(config._a[YEAR], currentDate[YEAR]);
 
-            if (config._dayOfYear > daysInYear(yearToUse)) {
+            if (
+                config._dayOfYear > daysInYear(yearToUse) ||
+                config._dayOfYear === 0
+            ) {
                 getParsingFlags(config)._overflowDayOfYear = true;
             }
 
 
         // Zero out whatever was not defaulted, including time
         for (; i < 7; i++) {
-            config._a[i] = input[i] = (config._a[i] == null) ? (i === 2 ? 1 : 0) : config._a[i];
+            config._a[i] = input[i] =
+                config._a[i] == null ? (i === 2 ? 1 : 0) : config._a[i];
         }
 
         // Check for 24:00:00.000
-        if (config._a[HOUR] === 24 &&
-                config._a[MINUTE] === 0 &&
-                config._a[SECOND] === 0 &&
-                config._a[MILLISECOND] === 0) {
+        if (
+            config._a[HOUR] === 24 &&
+            config._a[MINUTE] === 0 &&
+            config._a[SECOND] === 0 &&
+            config._a[MILLISECOND] === 0
+        ) {
             config._nextDay = true;
             config._a[HOUR] = 0;
         }
 
-        config._d = (config._useUTC ? createUTCDate : createDate).apply(null, input);
+        config._d = (config._useUTC ? createUTCDate : createDate).apply(
+            null,
+            input
+        );
+        expectedWeekday = config._useUTC
+            ? config._d.getUTCDay()
+            : config._d.getDay();
+
         // Apply timezone offset from input. The actual utcOffset can be changed
         // with parseZone.
         if (config._tzm != null) {
         if (config._nextDay) {
             config._a[HOUR] = 24;
         }
+
+        // check for mismatching day of week
+        if (
+            config._w &&
+            typeof config._w.d !== 'undefined' &&
+            config._w.d !== expectedWeekday
+        ) {
+            getParsingFlags(config).weekdayMismatch = true;
+        }
     }
 
     function dayOfYearFromWeekInfo(config) {
-        var w, weekYear, week, weekday, dow, doy, temp, weekdayOverflow;
+        var w, weekYear, week, weekday, dow, doy, temp, weekdayOverflow, curWeek;
 
         w = config._w;
         if (w.GG != null || w.W != null || w.E != null) {
             // how we interpret now (local, utc, fixed offset). So create
             // a now version of current config (take local/utc/offset flags, and
             // create now).
-            weekYear = defaults(w.GG, config._a[YEAR], weekOfYear(local__createLocal(), 1, 4).year);
+            weekYear = defaults(
+                w.GG,
+                config._a[YEAR],
+                weekOfYear(createLocal(), 1, 4).year
+            );
             week = defaults(w.W, 1);
             weekday = defaults(w.E, 1);
             if (weekday < 1 || weekday > 7) {
             dow = config._locale._week.dow;
             doy = config._locale._week.doy;
 
-            weekYear = defaults(w.gg, config._a[YEAR], weekOfYear(local__createLocal(), dow, doy).year);
-            week = defaults(w.w, 1);
+            curWeek = weekOfYear(createLocal(), dow, doy);
+
+            weekYear = defaults(w.gg, config._a[YEAR], curWeek.year);
+
+            // Default to current week.
+            week = defaults(w.w, curWeek.week);
 
             if (w.d != null) {
                 // weekday -- low day numbers are considered next week
                     weekdayOverflow = true;
                 }
             } else if (w.e != null) {
-                // local weekday -- counting starts from begining of week
+                // local weekday -- counting starts from beginning of week
                 weekday = w.e + dow;
                 if (w.e < 0 || w.e > 6) {
                     weekdayOverflow = true;
                 }
             } else {
-                // default to begining of week
+                // default to beginning of week
                 weekday = dow;
             }
         }
     }
 
     // constant that refers to the ISO standard
-    utils_hooks__hooks.ISO_8601 = function () {};
+    hooks.ISO_8601 = function () {};
+
+    // constant that refers to the RFC 2822 form
+    hooks.RFC_2822 = function () {};
 
     // date from string and format string
     function configFromStringAndFormat(config) {
         // TODO: Move this to another part of the creation flow to prevent circular deps
-        if (config._f === utils_hooks__hooks.ISO_8601) {
+        if (config._f === hooks.ISO_8601) {
             configFromISO(config);
             return;
         }
-
+        if (config._f === hooks.RFC_2822) {
+            configFromRFC2822(config);
+            return;
+        }
         config._a = [];
         getParsingFlags(config).empty = true;
 
         // This array is used to make a Date, either with `new Date` or `Date.UTC`
         var string = '' + config._i,
-            i, parsedInput, tokens, token, skipped,
+            i,
+            parsedInput,
+            tokens,
+            token,
+            skipped,
             stringLength = string.length,
-            totalParsedInputLength = 0;
-
-        tokens = expandFormat(config._f, config._locale).match(formattingTokens) || [];
-
-        for (i = 0; i < tokens.length; i++) {
+            totalParsedInputLength = 0,
+            era,
+            tokenLen;
+
+        tokens =
+            expandFormat(config._f, config._locale).match(formattingTokens) || [];
+        tokenLen = tokens.length;
+        for (i = 0; i < tokenLen; i++) {
             token = tokens[i];
-            parsedInput = (string.match(getParseRegexForToken(token, config)) || [])[0];
-            // console.log('token', token, 'parsedInput', parsedInput,
-            //         'regex', getParseRegexForToken(token, config));
+            parsedInput = (string.match(getParseRegexForToken(token, config)) ||
+                [])[0];
             if (parsedInput) {
                 skipped = string.substr(0, string.indexOf(parsedInput));
                 if (skipped.length > 0) {
                     getParsingFlags(config).unusedInput.push(skipped);
                 }
-                string = string.slice(string.indexOf(parsedInput) + parsedInput.length);
+                string = string.slice(
+                    string.indexOf(parsedInput) + parsedInput.length
+                );
                 totalParsedInputLength += parsedInput.length;
             }
             // don't parse if it's not a known token
             if (formatTokenFunctions[token]) {
                 if (parsedInput) {
                     getParsingFlags(config).empty = false;
-                }
-                else {
+                } else {
                     getParsingFlags(config).unusedTokens.push(token);
                 }
                 addTimeToArrayFromToken(token, parsedInput, config);
-            }
-            else if (config._strict && !parsedInput) {
+            } else if (config._strict && !parsedInput) {
                 getParsingFlags(config).unusedTokens.push(token);
             }
         }
 
         // add remaining unparsed input length to the string
-        getParsingFlags(config).charsLeftOver = stringLength - totalParsedInputLength;
+        getParsingFlags(config).charsLeftOver =
+            stringLength - totalParsedInputLength;
         if (string.length > 0) {
             getParsingFlags(config).unusedInput.push(string);
         }
 
         // clear _12h flag if hour is <= 12
-        if (getParsingFlags(config).bigHour === true &&
-                config._a[HOUR] <= 12 &&
-                config._a[HOUR] > 0) {
+        if (
+            config._a[HOUR] <= 12 &&
+            getParsingFlags(config).bigHour === true &&
+            config._a[HOUR] > 0
+        ) {
             getParsingFlags(config).bigHour = undefined;
         }
+
+        getParsingFlags(config).parsedDateParts = config._a.slice(0);
+        getParsingFlags(config).meridiem = config._meridiem;
         // handle meridiem
-        config._a[HOUR] = meridiemFixWrap(config._locale, config._a[HOUR], config._meridiem);
+        config._a[HOUR] = meridiemFixWrap(
+            config._locale,
+            config._a[HOUR],
+            config._meridiem
+        );
+
+        // handle era
+        era = getParsingFlags(config).era;
+        if (era !== null) {
+            config._a[YEAR] = config._locale.erasConvertYear(era, config._a[YEAR]);
+        }
 
         configFromArray(config);
         checkOverflow(config);
     }
 
-
-    function meridiemFixWrap (locale, hour, meridiem) {
+    function meridiemFixWrap(locale, hour, meridiem) {
         var isPm;
 
         if (meridiem == null) {
     function configFromStringAndArray(config) {
         var tempConfig,
             bestMoment,
-
             scoreToBeat,
             i,
-            currentScore;
+            currentScore,
+            validFormatFound,
+            bestFormatIsValid = false,
+            configfLen = config._f.length;
 
-        if (config._f.length === 0) {
+        if (configfLen === 0) {
             getParsingFlags(config).invalidFormat = true;
             config._d = new Date(NaN);
             return;
         }
 
-        for (i = 0; i < config._f.length; i++) {
+        for (i = 0; i < configfLen; i++) {
             currentScore = 0;
+            validFormatFound = false;
             tempConfig = copyConfig({}, config);
             if (config._useUTC != null) {
                 tempConfig._useUTC = config._useUTC;
             tempConfig._f = config._f[i];
             configFromStringAndFormat(tempConfig);
 
-            if (!valid__isValid(tempConfig)) {
-                continue;
+            if (isValid(tempConfig)) {
+                validFormatFound = true;
             }
 
             // if there is any input that was not parsed add a penalty for that format
 
             getParsingFlags(tempConfig).score = currentScore;
 
-            if (scoreToBeat == null || currentScore < scoreToBeat) {
-                scoreToBeat = currentScore;
-                bestMoment = tempConfig;
+            if (!bestFormatIsValid) {
+                if (
+                    scoreToBeat == null ||
+                    currentScore < scoreToBeat ||
+                    validFormatFound
+                ) {
+                    scoreToBeat = currentScore;
+                    bestMoment = tempConfig;
+                    if (validFormatFound) {
+                        bestFormatIsValid = true;
+                    }
+                }
+            } else {
+                if (currentScore < scoreToBeat) {
+                    scoreToBeat = currentScore;
+                    bestMoment = tempConfig;
+                }
             }
         }
 
             return;
         }
 
-        var i = normalizeObjectUnits(config._i);
-        config._a = map([i.year, i.month, i.day || i.date, i.hour, i.minute, i.second, i.millisecond], function (obj) {
-            return obj && parseInt(obj, 10);
-        });
+        var i = normalizeObjectUnits(config._i),
+            dayOrDate = i.day === undefined ? i.date : i.day;
+        config._a = map(
+            [i.year, i.month, dayOrDate, i.hour, i.minute, i.second, i.millisecond],
+            function (obj) {
+                return obj && parseInt(obj, 10);
+            }
+        );
 
         configFromArray(config);
     }
 
-    function createFromConfig (config) {
+    function createFromConfig(config) {
         var res = new Moment(checkOverflow(prepareConfig(config)));
         if (res._nextDay) {
             // Adding is smart enough around DST
         return res;
     }
 
-    function prepareConfig (config) {
+    function prepareConfig(config) {
         var input = config._i,
             format = config._f;
 
-        config._locale = config._locale || locale_locales__getLocale(config._l);
+        config._locale = config._locale || getLocale(config._l);
 
         if (input === null || (format === undefined && input === '')) {
-            return valid__createInvalid({nullInput: true});
+            return createInvalid({ nullInput: true });
         }
 
         if (typeof input === 'string') {
 
         if (isMoment(input)) {
             return new Moment(checkOverflow(input));
+        } else if (isDate(input)) {
+            config._d = input;
         } else if (isArray(format)) {
             configFromStringAndArray(config);
         } else if (format) {
             configFromStringAndFormat(config);
-        } else if (isDate(input)) {
-            config._d = input;
         } else {
             configFromInput(config);
         }
 
-        if (!valid__isValid(config)) {
+        if (!isValid(config)) {
             config._d = null;
         }
 
 
     function configFromInput(config) {
         var input = config._i;
-        if (input === undefined) {
-            config._d = new Date(utils_hooks__hooks.now());
+        if (isUndefined(input)) {
+            config._d = new Date(hooks.now());
         } else if (isDate(input)) {
-            config._d = new Date(+input);
+            config._d = new Date(input.valueOf());
         } else if (typeof input === 'string') {
             configFromString(config);
         } else if (isArray(input)) {
                 return parseInt(obj, 10);
             });
             configFromArray(config);
-        } else if (typeof(input) === 'object') {
+        } else if (isObject(input)) {
             configFromObject(config);
-        } else if (typeof(input) === 'number') {
+        } else if (isNumber(input)) {
             // from milliseconds
             config._d = new Date(input);
         } else {
-            utils_hooks__hooks.createFromInputFallback(config);
+            hooks.createFromInputFallback(config);
         }
     }
 
-    function createLocalOrUTC (input, format, locale, strict, isUTC) {
+    function createLocalOrUTC(input, format, locale, strict, isUTC) {
         var c = {};
 
-        if (typeof(locale) === 'boolean') {
+        if (format === true || format === false) {
+            strict = format;
+            format = undefined;
+        }
+
+        if (locale === true || locale === false) {
             strict = locale;
             locale = undefined;
         }
+
+        if (
+            (isObject(input) && isObjectEmpty(input)) ||
+            (isArray(input) && input.length === 0)
+        ) {
+            input = undefined;
+        }
         // object construction must be done this way.
         // https://github.com/moment/moment/issues/1423
         c._isAMomentObject = true;
         return createFromConfig(c);
     }
 
-    function local__createLocal (input, format, locale, strict) {
+    function createLocal(input, format, locale, strict) {
         return createLocalOrUTC(input, format, locale, strict, false);
     }
 
     var prototypeMin = deprecate(
-         'moment().min is deprecated, use moment.min instead. https://github.com/moment/moment/issues/1548',
-         function () {
-             var other = local__createLocal.apply(null, arguments);
-             if (this.isValid() && other.isValid()) {
-                 return other < this ? this : other;
-             } else {
-                 return valid__createInvalid();
-             }
-         }
-     );
-
-    var prototypeMax = deprecate(
-        'moment().max is deprecated, use moment.max instead. https://github.com/moment/moment/issues/1548',
-        function () {
-            var other = local__createLocal.apply(null, arguments);
-            if (this.isValid() && other.isValid()) {
-                return other > this ? this : other;
-            } else {
-                return valid__createInvalid();
+            'moment().min is deprecated, use moment.max instead. http://momentjs.com/guides/#/warnings/min-max/',
+            function () {
+                var other = createLocal.apply(null, arguments);
+                if (this.isValid() && other.isValid()) {
+                    return other < this ? this : other;
+                } else {
+                    return createInvalid();
+                }
             }
-        }
-    );
+        ),
+        prototypeMax = deprecate(
+            'moment().max is deprecated, use moment.min instead. http://momentjs.com/guides/#/warnings/min-max/',
+            function () {
+                var other = createLocal.apply(null, arguments);
+                if (this.isValid() && other.isValid()) {
+                    return other > this ? this : other;
+                } else {
+                    return createInvalid();
+                }
+            }
+        );
 
     // Pick a moment m from moments so that m[fn](other) is true for all
     // other. This relies on the function fn to be transitive.
             moments = moments[0];
         }
         if (!moments.length) {
-            return local__createLocal();
+            return createLocal();
         }
         res = moments[0];
         for (i = 1; i < moments.length; ++i) {
     }
 
     // TODO: Use [].sort instead?
-    function min () {
+    function min() {
         var args = [].slice.call(arguments, 0);
 
         return pickBy('isBefore', args);
     }
 
-    function max () {
+    function max() {
         var args = [].slice.call(arguments, 0);
 
         return pickBy('isAfter', args);
     }
 
     var now = function () {
-        return Date.now ? Date.now() : +(new Date());
+        return Date.now ? Date.now() : +new Date();
     };
 
-    function Duration (duration) {
+    var ordering = [
+        'year',
+        'quarter',
+        'month',
+        'week',
+        'day',
+        'hour',
+        'minute',
+        'second',
+        'millisecond',
+    ];
+
+    function isDurationValid(m) {
+        var key,
+            unitHasDecimal = false,
+            i,
+            orderLen = ordering.length;
+        for (key in m) {
+            if (
+                hasOwnProp(m, key) &&
+                !(
+                    indexOf.call(ordering, key) !== -1 &&
+                    (m[key] == null || !isNaN(m[key]))
+                )
+            ) {
+                return false;
+            }
+        }
+
+        for (i = 0; i < orderLen; ++i) {
+            if (m[ordering[i]]) {
+                if (unitHasDecimal) {
+                    return false; // only allow non-integers for smallest unit
+                }
+                if (parseFloat(m[ordering[i]]) !== toInt(m[ordering[i]])) {
+                    unitHasDecimal = true;
+                }
+            }
+        }
+
+        return true;
+    }
+
+    function isValid$1() {
+        return this._isValid;
+    }
+
+    function createInvalid$1() {
+        return createDuration(NaN);
+    }
+
+    function Duration(duration) {
         var normalizedInput = normalizeObjectUnits(duration),
             years = normalizedInput.year || 0,
             quarters = normalizedInput.quarter || 0,
             months = normalizedInput.month || 0,
-            weeks = normalizedInput.week || 0,
+            weeks = normalizedInput.week || normalizedInput.isoWeek || 0,
             days = normalizedInput.day || 0,
             hours = normalizedInput.hour || 0,
             minutes = normalizedInput.minute || 0,
             seconds = normalizedInput.second || 0,
             milliseconds = normalizedInput.millisecond || 0;
 
+        this._isValid = isDurationValid(normalizedInput);
+
         // representation for dateAddRemove
-        this._milliseconds = +milliseconds +
+        this._milliseconds =
+            +milliseconds +
             seconds * 1e3 + // 1000
             minutes * 6e4 + // 1000 * 60
-            hours * 36e5; // 1000 * 60 * 60
+            hours * 1000 * 60 * 60; //using 1000 * 60 * 60 instead of 36e5 to avoid floating point rounding errors https://github.com/moment/moment/issues/2978
         // Because of dateAddRemove treats 24 hours as different from a
         // day when working around DST, we need to store them separately
-        this._days = +days +
-            weeks * 7;
-        // It is impossible translate months into days without knowing
+        this._days = +days + weeks * 7;
+        // It is impossible to translate months into days without knowing
         // which months you are are talking about, so we have to store
         // it separately.
-        this._months = +months +
-            quarters * 3 +
-            years * 12;
+        this._months = +months + quarters * 3 + years * 12;
 
         this._data = {};
 
-        this._locale = locale_locales__getLocale();
+        this._locale = getLocale();
 
         this._bubble();
     }
 
-    function isDuration (obj) {
+    function isDuration(obj) {
         return obj instanceof Duration;
     }
 
+    function absRound(number) {
+        if (number < 0) {
+            return Math.round(-1 * number) * -1;
+        } else {
+            return Math.round(number);
+        }
+    }
+
+    // compare two arrays, return the number of differences
+    function compareArrays(array1, array2, dontConvert) {
+        var len = Math.min(array1.length, array2.length),
+            lengthDiff = Math.abs(array1.length - array2.length),
+            diffs = 0,
+            i;
+        for (i = 0; i < len; i++) {
+            if (
+                (dontConvert && array1[i] !== array2[i]) ||
+                (!dontConvert && toInt(array1[i]) !== toInt(array2[i]))
+            ) {
+                diffs++;
+            }
+        }
+        return diffs + lengthDiff;
+    }
+
     // FORMATTING
 
-    function offset (token, separator) {
+    function offset(token, separator) {
         addFormatToken(token, 0, 0, function () {
-            var offset = this.utcOffset();
-            var sign = '+';
+            var offset = this.utcOffset(),
+                sign = '+';
             if (offset < 0) {
                 offset = -offset;
                 sign = '-';
             }
-            return sign + zeroFill(~~(offset / 60), 2) + separator + zeroFill(~~(offset) % 60, 2);
+            return (
+                sign +
+                zeroFill(~~(offset / 60), 2) +
+                separator +
+                zeroFill(~~offset % 60, 2)
+            );
         });
     }
 
 
     // PARSING
 
-    addRegexToken('Z',  matchShortOffset);
+    addRegexToken('Z', matchShortOffset);
     addRegexToken('ZZ', matchShortOffset);
     addParseToken(['Z', 'ZZ'], function (input, array, config) {
         config._useUTC = true;
     var chunkOffset = /([\+\-]|\d\d)/gi;
 
     function offsetFromString(matcher, string) {
-        var matches = ((string || '').match(matcher) || []);
-        var chunk   = matches[matches.length - 1] || [];
-        var parts   = (chunk + '').match(chunkOffset) || ['-', 0, 0];
-        var minutes = +(parts[1] * 60) + toInt(parts[2]);
+        var matches = (string || '').match(matcher),
+            chunk,
+            parts,
+            minutes;
+
+        if (matches === null) {
+            return null;
+        }
 
-        return parts[0] === '+' ? minutes : -minutes;
+        chunk = matches[matches.length - 1] || [];
+        parts = (chunk + '').match(chunkOffset) || ['-', 0, 0];
+        minutes = +(parts[1] * 60) + toInt(parts[2]);
+
+        return minutes === 0 ? 0 : parts[0] === '+' ? minutes : -minutes;
     }
 
     // Return a moment from input, that is local/utc/zone equivalent to model.
         var res, diff;
         if (model._isUTC) {
             res = model.clone();
-            diff = (isMoment(input) || isDate(input) ? +input : +local__createLocal(input)) - (+res);
+            diff =
+                (isMoment(input) || isDate(input)
+                    ? input.valueOf()
+                    : createLocal(input).valueOf()) - res.valueOf();
             // Use low-level api, because this fn is low-level api.
-            res._d.setTime(+res._d + diff);
-            utils_hooks__hooks.updateOffset(res, false);
+            res._d.setTime(res._d.valueOf() + diff);
+            hooks.updateOffset(res, false);
             return res;
         } else {
-            return local__createLocal(input).local();
+            return createLocal(input).local();
         }
     }
 
-    function getDateOffset (m) {
+    function getDateOffset(m) {
         // On Firefox.24 Date#getTimezoneOffset returns a floating point.
         // https://github.com/moment/moment/pull/1871
-        return -Math.round(m._d.getTimezoneOffset() / 15) * 15;
+        return -Math.round(m._d.getTimezoneOffset());
     }
 
     // HOOKS
 
     // This function will be called whenever a moment is mutated.
     // It is intended to keep the offset in sync with the timezone.
-    utils_hooks__hooks.updateOffset = function () {};
+    hooks.updateOffset = function () {};
 
     // MOMENTS
 
     // a second time. In case it wants us to change the offset again
     // _changeInProgress == true case, then we have to adjust, because
     // there is no such time in the given timezone.
-    function getSetOffset (input, keepLocalTime) {
+    function getSetOffset(input, keepLocalTime, keepMinutes) {
         var offset = this._offset || 0,
             localAdjust;
         if (!this.isValid()) {
         if (input != null) {
             if (typeof input === 'string') {
                 input = offsetFromString(matchShortOffset, input);
-            } else if (Math.abs(input) < 16) {
+                if (input === null) {
+                    return this;
+                }
+            } else if (Math.abs(input) < 16 && !keepMinutes) {
                 input = input * 60;
             }
             if (!this._isUTC && keepLocalTime) {
             }
             if (offset !== input) {
                 if (!keepLocalTime || this._changeInProgress) {
-                    add_subtract__addSubtract(this, create__createDuration(input - offset, 'm'), 1, false);
+                    addSubtract(
+                        this,
+                        createDuration(input - offset, 'm'),
+                        1,
+                        false
+                    );
                 } else if (!this._changeInProgress) {
                     this._changeInProgress = true;
-                    utils_hooks__hooks.updateOffset(this, true);
+                    hooks.updateOffset(this, true);
                     this._changeInProgress = null;
                 }
             }
         }
     }
 
-    function getSetZone (input, keepLocalTime) {
+    function getSetZone(input, keepLocalTime) {
         if (input != null) {
             if (typeof input !== 'string') {
                 input = -input;
         }
     }
 
-    function setOffsetToUTC (keepLocalTime) {
+    function setOffsetToUTC(keepLocalTime) {
         return this.utcOffset(0, keepLocalTime);
     }
 
-    function setOffsetToLocal (keepLocalTime) {
+    function setOffsetToLocal(keepLocalTime) {
         if (this._isUTC) {
             this.utcOffset(0, keepLocalTime);
             this._isUTC = false;
         return this;
     }
 
-    function setOffsetToParsedOffset () {
-        if (this._tzm) {
-            this.utcOffset(this._tzm);
+    function setOffsetToParsedOffset() {
+        if (this._tzm != null) {
+            this.utcOffset(this._tzm, false, true);
         } else if (typeof this._i === 'string') {
-            this.utcOffset(offsetFromString(matchOffset, this._i));
+            var tZone = offsetFromString(matchOffset, this._i);
+            if (tZone != null) {
+                this.utcOffset(tZone);
+            } else {
+                this.utcOffset(0, true);
+            }
         }
         return this;
     }
 
-    function hasAlignedHourOffset (input) {
+    function hasAlignedHourOffset(input) {
         if (!this.isValid()) {
             return false;
         }
-        input = input ? local__createLocal(input).utcOffset() : 0;
+        input = input ? createLocal(input).utcOffset() : 0;
 
         return (this.utcOffset() - input) % 60 === 0;
     }
 
-    function isDaylightSavingTime () {
+    function isDaylightSavingTime() {
         return (
             this.utcOffset() > this.clone().month(0).utcOffset() ||
             this.utcOffset() > this.clone().month(5).utcOffset()
         );
     }
 
-    function isDaylightSavingTimeShifted () {
+    function isDaylightSavingTimeShifted() {
         if (!isUndefined(this._isDSTShifted)) {
             return this._isDSTShifted;
         }
 
-        var c = {};
+        var c = {},
+            other;
 
         copyConfig(c, this);
         c = prepareConfig(c);
 
         if (c._a) {
-            var other = c._isUTC ? create_utc__createUTC(c._a) : local__createLocal(c._a);
-            this._isDSTShifted = this.isValid() &&
-                compareArrays(c._a, other.toArray()) > 0;
+            other = c._isUTC ? createUTC(c._a) : createLocal(c._a);
+            this._isDSTShifted =
+                this.isValid() && compareArrays(c._a, other.toArray()) > 0;
         } else {
             this._isDSTShifted = false;
         }
         return this._isDSTShifted;
     }
 
-    function isLocal () {
+    function isLocal() {
         return this.isValid() ? !this._isUTC : false;
     }
 
-    function isUtcOffset () {
+    function isUtcOffset() {
         return this.isValid() ? this._isUTC : false;
     }
 
-    function isUtc () {
+    function isUtc() {
         return this.isValid() ? this._isUTC && this._offset === 0 : false;
     }
 
     // ASP.NET json date format regex
-    var aspNetRegex = /(\-)?(?:(\d*)[. ])?(\d+)\:(\d+)(?:\:(\d+)\.?(\d{3})?)?/;
-
-    // from http://docs.closure-library.googlecode.com/git/closure_goog_date_date.js.source.html
-    // somewhat more in line with 4.4.3.2 2004 spec, but allows decimal anywhere
-    var isoRegex = /^(-)?P(?:(?:([0-9,.]*)Y)?(?:([0-9,.]*)M)?(?:([0-9,.]*)D)?(?:T(?:([0-9,.]*)H)?(?:([0-9,.]*)M)?(?:([0-9,.]*)S)?)?|([0-9,.]*)W)$/;
-
-    function create__createDuration (input, key) {
+    var aspNetRegex = /^(-|\+)?(?:(\d*)[. ])?(\d+):(\d+)(?::(\d+)(\.\d*)?)?$/,
+        // from http://docs.closure-library.googlecode.com/git/closure_goog_date_date.js.source.html
+        // somewhat more in line with 4.4.3.2 2004 spec, but allows decimal anywhere
+        // and further modified to allow for strings containing both week and day
+        isoRegex =
+            /^(-|\+)?P(?:([-+]?[0-9,.]*)Y)?(?:([-+]?[0-9,.]*)M)?(?:([-+]?[0-9,.]*)W)?(?:([-+]?[0-9,.]*)D)?(?:T(?:([-+]?[0-9,.]*)H)?(?:([-+]?[0-9,.]*)M)?(?:([-+]?[0-9,.]*)S)?)?$/;
+
+    function createDuration(input, key) {
         var duration = input,
             // matching against regexp is expensive, do it on demand
             match = null,
 
         if (isDuration(input)) {
             duration = {
-                ms : input._milliseconds,
-                d  : input._days,
-                M  : input._months
+                ms: input._milliseconds,
+                d: input._days,
+                M: input._months,
             };
-        } else if (typeof input === 'number') {
+        } else if (isNumber(input) || !isNaN(+input)) {
             duration = {};
             if (key) {
-                duration[key] = input;
+                duration[key] = +input;
             } else {
-                duration.milliseconds = input;
+                duration.milliseconds = +input;
             }
-        } else if (!!(match = aspNetRegex.exec(input))) {
-            sign = (match[1] === '-') ? -1 : 1;
+        } else if ((match = aspNetRegex.exec(input))) {
+            sign = match[1] === '-' ? -1 : 1;
             duration = {
-                y  : 0,
-                d  : toInt(match[DATE])        * sign,
-                h  : toInt(match[HOUR])        * sign,
-                m  : toInt(match[MINUTE])      * sign,
-                s  : toInt(match[SECOND])      * sign,
-                ms : toInt(match[MILLISECOND]) * sign
+                y: 0,
+                d: toInt(match[DATE]) * sign,
+                h: toInt(match[HOUR]) * sign,
+                m: toInt(match[MINUTE]) * sign,
+                s: toInt(match[SECOND]) * sign,
+                ms: toInt(absRound(match[MILLISECOND] * 1000)) * sign, // the millisecond decimal point is included in the match
             };
-        } else if (!!(match = isoRegex.exec(input))) {
-            sign = (match[1] === '-') ? -1 : 1;
+        } else if ((match = isoRegex.exec(input))) {
+            sign = match[1] === '-' ? -1 : 1;
             duration = {
-                y : parseIso(match[2], sign),
-                M : parseIso(match[3], sign),
-                : parseIso(match[4], sign),
-                : parseIso(match[5], sign),
-                : parseIso(match[6], sign),
-                : parseIso(match[7], sign),
-                w : parseIso(match[8], sign)
+                y: parseIso(match[2], sign),
+                M: parseIso(match[3], sign),
+                w: parseIso(match[4], sign),
+                d: parseIso(match[5], sign),
+                h: parseIso(match[6], sign),
+                m: parseIso(match[7], sign),
+                s: parseIso(match[8], sign),
             };
-        } else if (duration == null) {// checks for null or undefined
+        } else if (duration == null) {
+            // checks for null or undefined
             duration = {};
-        } else if (typeof duration === 'object' && ('from' in duration || 'to' in duration)) {
-            diffRes = momentsDifference(local__createLocal(duration.from), local__createLocal(duration.to));
+        } else if (
+            typeof duration === 'object' &&
+            ('from' in duration || 'to' in duration)
+        ) {
+            diffRes = momentsDifference(
+                createLocal(duration.from),
+                createLocal(duration.to)
+            );
 
             duration = {};
             duration.ms = diffRes.milliseconds;
             ret._locale = input._locale;
         }
 
+        if (isDuration(input) && hasOwnProp(input, '_isValid')) {
+            ret._isValid = input._isValid;
+        }
+
         return ret;
     }
 
-    create__createDuration.fn = Duration.prototype;
+    createDuration.fn = Duration.prototype;
+    createDuration.invalid = createInvalid$1;
 
-    function parseIso (inp, sign) {
+    function parseIso(inp, sign) {
         // We'd normally use ~~inp for this, but unfortunately it also
         // converts floats to ints.
         // inp may be undefined, so careful calling replace on it.
     }
 
     function positiveMomentsDifference(base, other) {
-        var res = {milliseconds: 0, months: 0};
+        var res = {};
 
-        res.months = other.month() - base.month() +
-            (other.year() - base.year()) * 12;
+        res.months =
+            other.month() - base.month() + (other.year() - base.year()) * 12;
         if (base.clone().add(res.months, 'M').isAfter(other)) {
             --res.months;
         }
 
-        res.milliseconds = +other - +(base.clone().add(res.months, 'M'));
+        res.milliseconds = +other - +base.clone().add(res.months, 'M');
 
         return res;
     }
     function momentsDifference(base, other) {
         var res;
         if (!(base.isValid() && other.isValid())) {
-            return {milliseconds: 0, months: 0};
+            return { milliseconds: 0, months: 0 };
         }
 
         other = cloneWithOffset(other, base);
             var dur, tmp;
             //invert the arguments, but complain about it
             if (period !== null && !isNaN(+period)) {
-                deprecateSimple(name, 'moment().' + name  + '(period, number) is deprecated. Please use moment().' + name + '(number, period).');
-                tmp = val; val = period; period = tmp;
+                deprecateSimple(
+                    name,
+                    'moment().' +
+                        name +
+                        '(period, number) is deprecated. Please use moment().' +
+                        name +
+                        '(number, period). ' +
+                        'See http://momentjs.com/guides/#/warnings/add-inverted-param/ for more info.'
+                );
+                tmp = val;
+                val = period;
+                period = tmp;
             }
 
-            val = typeof val === 'string' ? +val : val;
-            dur = create__createDuration(val, period);
-            add_subtract__addSubtract(this, dur, direction);
+            dur = createDuration(val, period);
+            addSubtract(this, dur, direction);
             return this;
         };
     }
 
-    function add_subtract__addSubtract (mom, duration, isAdding, updateOffset) {
+    function addSubtract(mom, duration, isAdding, updateOffset) {
         var milliseconds = duration._milliseconds,
-            days = duration._days,
-            months = duration._months;
+            days = absRound(duration._days),
+            months = absRound(duration._months);
 
         if (!mom.isValid()) {
             // No op
 
         updateOffset = updateOffset == null ? true : updateOffset;
 
-        if (milliseconds) {
-            mom._d.setTime(+mom._d + milliseconds * isAdding);
+        if (months) {
+            setMonth(mom, get(mom, 'Month') + months * isAdding);
         }
         if (days) {
-            get_set__set(mom, 'Date', get_set__get(mom, 'Date') + days * isAdding);
+            set$1(mom, 'Date', get(mom, 'Date') + days * isAdding);
         }
-        if (months) {
-            setMonth(mom, get_set__get(mom, 'Month') + months * isAdding);
+        if (milliseconds) {
+            mom._d.setTime(mom._d.valueOf() + milliseconds * isAdding);
         }
         if (updateOffset) {
-            utils_hooks__hooks.updateOffset(mom, days || months);
+            hooks.updateOffset(mom, days || months);
+        }
+    }
+
+    var add = createAdder(1, 'add'),
+        subtract = createAdder(-1, 'subtract');
+
+    function isString(input) {
+        return typeof input === 'string' || input instanceof String;
+    }
+
+    // type MomentInput = Moment | Date | string | number | (number | string)[] | MomentInputObject | void; // null | undefined
+    function isMomentInput(input) {
+        return (
+            isMoment(input) ||
+            isDate(input) ||
+            isString(input) ||
+            isNumber(input) ||
+            isNumberOrStringArray(input) ||
+            isMomentInputObject(input) ||
+            input === null ||
+            input === undefined
+        );
+    }
+
+    function isMomentInputObject(input) {
+        var objectTest = isObject(input) && !isObjectEmpty(input),
+            propertyTest = false,
+            properties = [
+                'years',
+                'year',
+                'y',
+                'months',
+                'month',
+                'M',
+                'days',
+                'day',
+                'd',
+                'dates',
+                'date',
+                'D',
+                'hours',
+                'hour',
+                'h',
+                'minutes',
+                'minute',
+                'm',
+                'seconds',
+                'second',
+                's',
+                'milliseconds',
+                'millisecond',
+                'ms',
+            ],
+            i,
+            property,
+            propertyLen = properties.length;
+
+        for (i = 0; i < propertyLen; i += 1) {
+            property = properties[i];
+            propertyTest = propertyTest || hasOwnProp(input, property);
         }
+
+        return objectTest && propertyTest;
     }
 
-    var add_subtract__add      = createAdder(1, 'add');
-    var add_subtract__subtract = createAdder(-1, 'subtract');
+    function isNumberOrStringArray(input) {
+        var arrayTest = isArray(input),
+            dataTypeTest = false;
+        if (arrayTest) {
+            dataTypeTest =
+                input.filter(function (item) {
+                    return !isNumber(item) && isString(input);
+                }).length === 0;
+        }
+        return arrayTest && dataTypeTest;
+    }
 
-    function moment_calendar__calendar (time, formats) {
+    function isCalendarSpec(input) {
+        var objectTest = isObject(input) && !isObjectEmpty(input),
+            propertyTest = false,
+            properties = [
+                'sameDay',
+                'nextDay',
+                'lastDay',
+                'nextWeek',
+                'lastWeek',
+                'sameElse',
+            ],
+            i,
+            property;
+
+        for (i = 0; i < properties.length; i += 1) {
+            property = properties[i];
+            propertyTest = propertyTest || hasOwnProp(input, property);
+        }
+
+        return objectTest && propertyTest;
+    }
+
+    function getCalendarFormat(myMoment, now) {
+        var diff = myMoment.diff(now, 'days', true);
+        return diff < -6
+            ? 'sameElse'
+            : diff < -1
+            ? 'lastWeek'
+            : diff < 0
+            ? 'lastDay'
+            : diff < 1
+            ? 'sameDay'
+            : diff < 2
+            ? 'nextDay'
+            : diff < 7
+            ? 'nextWeek'
+            : 'sameElse';
+    }
+
+    function calendar$1(time, formats) {
+        // Support for single parameter, formats only overload to the calendar function
+        if (arguments.length === 1) {
+            if (!arguments[0]) {
+                time = undefined;
+                formats = undefined;
+            } else if (isMomentInput(arguments[0])) {
+                time = arguments[0];
+                formats = undefined;
+            } else if (isCalendarSpec(arguments[0])) {
+                formats = arguments[0];
+                time = undefined;
+            }
+        }
         // We want to compare the start of today, vs this.
         // Getting start-of-today depends on whether we're local/utc/offset or not.
-        var now = time || local__createLocal(),
+        var now = time || createLocal(),
             sod = cloneWithOffset(now, this).startOf('day'),
-            diff = this.diff(sod, 'days', true),
-            format = diff < -6 ? 'sameElse' :
-                diff < -1 ? 'lastWeek' :
-                diff < 0 ? 'lastDay' :
-                diff < 1 ? 'sameDay' :
-                diff < 2 ? 'nextDay' :
-                diff < 7 ? 'nextWeek' : 'sameElse';
-
-        var output = formats && (isFunction(formats[format]) ? formats[format]() : formats[format]);
-
-        return this.format(output || this.localeData().calendar(format, this, local__createLocal(now)));
+            format = hooks.calendarFormat(this, sod) || 'sameElse',
+            output =
+                formats &&
+                (isFunction(formats[format])
+                    ? formats[format].call(this, now)
+                    : formats[format]);
+
+        return this.format(
+            output || this.localeData().calendar(format, this, createLocal(now))
+        );
     }
 
-    function clone () {
+    function clone() {
         return new Moment(this);
     }
 
-    function isAfter (input, units) {
-        var localInput = isMoment(input) ? input : local__createLocal(input);
+    function isAfter(input, units) {
+        var localInput = isMoment(input) ? input : createLocal(input);
         if (!(this.isValid() && localInput.isValid())) {
             return false;
         }
-        units = normalizeUnits(!isUndefined(units) ? units : 'millisecond');
+        units = normalizeUnits(units) || 'millisecond';
         if (units === 'millisecond') {
-            return +this > +localInput;
+            return this.valueOf() > localInput.valueOf();
         } else {
-            return +localInput < +this.clone().startOf(units);
+            return localInput.valueOf() < this.clone().startOf(units).valueOf();
         }
     }
 
-    function isBefore (input, units) {
-        var localInput = isMoment(input) ? input : local__createLocal(input);
+    function isBefore(input, units) {
+        var localInput = isMoment(input) ? input : createLocal(input);
         if (!(this.isValid() && localInput.isValid())) {
             return false;
         }
-        units = normalizeUnits(!isUndefined(units) ? units : 'millisecond');
+        units = normalizeUnits(units) || 'millisecond';
         if (units === 'millisecond') {
-            return +this < +localInput;
+            return this.valueOf() < localInput.valueOf();
         } else {
-            return +this.clone().endOf(units) < +localInput;
+            return this.clone().endOf(units).valueOf() < localInput.valueOf();
         }
     }
 
-    function isBetween (from, to, units) {
-        return this.isAfter(from, units) && this.isBefore(to, units);
+    function isBetween(from, to, units, inclusivity) {
+        var localFrom = isMoment(from) ? from : createLocal(from),
+            localTo = isMoment(to) ? to : createLocal(to);
+        if (!(this.isValid() && localFrom.isValid() && localTo.isValid())) {
+            return false;
+        }
+        inclusivity = inclusivity || '()';
+        return (
+            (inclusivity[0] === '('
+                ? this.isAfter(localFrom, units)
+                : !this.isBefore(localFrom, units)) &&
+            (inclusivity[1] === ')'
+                ? this.isBefore(localTo, units)
+                : !this.isAfter(localTo, units))
+        );
     }
 
-    function isSame (input, units) {
-        var localInput = isMoment(input) ? input : local__createLocal(input),
+    function isSame(input, units) {
+        var localInput = isMoment(input) ? input : createLocal(input),
             inputMs;
         if (!(this.isValid() && localInput.isValid())) {
             return false;
         }
-        units = normalizeUnits(units || 'millisecond');
+        units = normalizeUnits(units) || 'millisecond';
         if (units === 'millisecond') {
-            return +this === +localInput;
+            return this.valueOf() === localInput.valueOf();
         } else {
-            inputMs = +localInput;
-            return +(this.clone().startOf(units)) <= inputMs && inputMs <= +(this.clone().endOf(units));
+            inputMs = localInput.valueOf();
+            return (
+                this.clone().startOf(units).valueOf() <= inputMs &&
+                inputMs <= this.clone().endOf(units).valueOf()
+            );
         }
     }
 
-    function isSameOrAfter (input, units) {
-        return this.isSame(input, units) || this.isAfter(input,units);
+    function isSameOrAfter(input, units) {
+        return this.isSame(input, units) || this.isAfter(input, units);
     }
 
-    function isSameOrBefore (input, units) {
-        return this.isSame(input, units) || this.isBefore(input,units);
+    function isSameOrBefore(input, units) {
+        return this.isSame(input, units) || this.isBefore(input, units);
     }
 
-    function diff (input, units, asFloat) {
-        var that,
-            zoneDelta,
-            delta, output;
+    function diff(input, units, asFloat) {
+        var that, zoneDelta, output;
 
         if (!this.isValid()) {
             return NaN;
 
         units = normalizeUnits(units);
 
-        if (units === 'year' || units === 'month' || units === 'quarter') {
-            output = monthDiff(this, that);
-            if (units === 'quarter') {
-                output = output / 3;
-            } else if (units === 'year') {
-                output = output / 12;
-            }
-        } else {
-            delta = this - that;
-            output = units === 'second' ? delta / 1e3 : // 1000
-                units === 'minute' ? delta / 6e4 : // 1000 * 60
-                units === 'hour' ? delta / 36e5 : // 1000 * 60 * 60
-                units === 'day' ? (delta - zoneDelta) / 864e5 : // 1000 * 60 * 60 * 24, negate dst
-                units === 'week' ? (delta - zoneDelta) / 6048e5 : // 1000 * 60 * 60 * 24 * 7, negate dst
-                delta;
+        switch (units) {
+            case 'year':
+                output = monthDiff(this, that) / 12;
+                break;
+            case 'month':
+                output = monthDiff(this, that);
+                break;
+            case 'quarter':
+                output = monthDiff(this, that) / 3;
+                break;
+            case 'second':
+                output = (this - that) / 1e3;
+                break; // 1000
+            case 'minute':
+                output = (this - that) / 6e4;
+                break; // 1000 * 60
+            case 'hour':
+                output = (this - that) / 36e5;
+                break; // 1000 * 60 * 60
+            case 'day':
+                output = (this - that - zoneDelta) / 864e5;
+                break; // 1000 * 60 * 60 * 24, negate dst
+            case 'week':
+                output = (this - that - zoneDelta) / 6048e5;
+                break; // 1000 * 60 * 60 * 24 * 7, negate dst
+            default:
+                output = this - that;
         }
+
         return asFloat ? output : absFloor(output);
     }
 
-    function monthDiff (a, b) {
+    function monthDiff(a, b) {
+        if (a.date() < b.date()) {
+            // end-of-month calculations work correct when the start month has more
+            // days than the end month.
+            return -monthDiff(b, a);
+        }
         // difference in months
-        var wholeMonthDiff = ((b.year() - a.year()) * 12) + (b.month() - a.month()),
+        var wholeMonthDiff = (b.year() - a.year()) * 12 + (b.month() - a.month()),
             // b is in (anchor - 1 month, anchor + 1 month)
             anchor = a.clone().add(wholeMonthDiff, 'months'),
-            anchor2, adjust;
+            anchor2,
+            adjust;
 
         if (b - anchor < 0) {
             anchor2 = a.clone().add(wholeMonthDiff - 1, 'months');
             adjust = (b - anchor) / (anchor2 - anchor);
         }
 
-        return -(wholeMonthDiff + adjust);
+        //check for negative zero, return zero if negative zero
+        return -(wholeMonthDiff + adjust) || 0;
     }
 
-    utils_hooks__hooks.defaultFormat = 'YYYY-MM-DDTHH:mm:ssZ';
+    hooks.defaultFormat = 'YYYY-MM-DDTHH:mm:ssZ';
+    hooks.defaultFormatUtc = 'YYYY-MM-DDTHH:mm:ss[Z]';
 
-    function toString () {
+    function toString() {
         return this.clone().locale('en').format('ddd MMM DD YYYY HH:mm:ss [GMT]ZZ');
     }
 
-    function moment_format__toISOString () {
-        var m = this.clone().utc();
-        if (0 < m.year() && m.year() <= 9999) {
-            if (isFunction(Date.prototype.toISOString)) {
-                // native implementation is ~50x faster, use it when we can
+    function toISOString(keepOffset) {
+        if (!this.isValid()) {
+            return null;
+        }
+        var utc = keepOffset !== true,
+            m = utc ? this.clone().utc() : this;
+        if (m.year() < 0 || m.year() > 9999) {
+            return formatMoment(
+                m,
+                utc
+                    ? 'YYYYYY-MM-DD[T]HH:mm:ss.SSS[Z]'
+                    : 'YYYYYY-MM-DD[T]HH:mm:ss.SSSZ'
+            );
+        }
+        if (isFunction(Date.prototype.toISOString)) {
+            // native implementation is ~50x faster, use it when we can
+            if (utc) {
                 return this.toDate().toISOString();
             } else {
-                return formatMoment(m, 'YYYY-MM-DD[T]HH:mm:ss.SSS[Z]');
+                return new Date(this.valueOf() + this.utcOffset() * 60 * 1000)
+                    .toISOString()
+                    .replace('Z', formatMoment(m, 'Z'));
             }
-        } else {
-            return formatMoment(m, 'YYYYYY-MM-DD[T]HH:mm:ss.SSS[Z]');
         }
+        return formatMoment(
+            m,
+            utc ? 'YYYY-MM-DD[T]HH:mm:ss.SSS[Z]' : 'YYYY-MM-DD[T]HH:mm:ss.SSSZ'
+        );
+    }
+
+    /**
+     * Return a human readable representation of a moment that can
+     * also be evaluated to get a new moment which is the same
+     *
+     * @link https://nodejs.org/dist/latest/docs/api/util.html#util_custom_inspect_function_on_objects
+     */
+    function inspect() {
+        if (!this.isValid()) {
+            return 'moment.invalid(/* ' + this._i + ' */)';
+        }
+        var func = 'moment',
+            zone = '',
+            prefix,
+            year,
+            datetime,
+            suffix;
+        if (!this.isLocal()) {
+            func = this.utcOffset() === 0 ? 'moment.utc' : 'moment.parseZone';
+            zone = 'Z';
+        }
+        prefix = '[' + func + '("]';
+        year = 0 <= this.year() && this.year() <= 9999 ? 'YYYY' : 'YYYYYY';
+        datetime = '-MM-DD[T]HH:mm:ss.SSS';
+        suffix = zone + '[")]';
+
+        return this.format(prefix + year + datetime + suffix);
     }
 
-    function format (inputString) {
-        var output = formatMoment(this, inputString || utils_hooks__hooks.defaultFormat);
+    function format(inputString) {
+        if (!inputString) {
+            inputString = this.isUtc()
+                ? hooks.defaultFormatUtc
+                : hooks.defaultFormat;
+        }
+        var output = formatMoment(this, inputString);
         return this.localeData().postformat(output);
     }
 
-    function from (time, withoutSuffix) {
-        if (this.isValid() &&
-                ((isMoment(time) && time.isValid()) ||
-                 local__createLocal(time).isValid())) {
-            return create__createDuration({to: this, from: time}).locale(this.locale()).humanize(!withoutSuffix);
+    function from(time, withoutSuffix) {
+        if (
+            this.isValid() &&
+            ((isMoment(time) && time.isValid()) || createLocal(time).isValid())
+        ) {
+            return createDuration({ to: this, from: time })
+                .locale(this.locale())
+                .humanize(!withoutSuffix);
         } else {
             return this.localeData().invalidDate();
         }
     }
 
-    function fromNow (withoutSuffix) {
-        return this.from(local__createLocal(), withoutSuffix);
+    function fromNow(withoutSuffix) {
+        return this.from(createLocal(), withoutSuffix);
     }
 
-    function to (time, withoutSuffix) {
-        if (this.isValid() &&
-                ((isMoment(time) && time.isValid()) ||
-                 local__createLocal(time).isValid())) {
-            return create__createDuration({from: this, to: time}).locale(this.locale()).humanize(!withoutSuffix);
+    function to(time, withoutSuffix) {
+        if (
+            this.isValid() &&
+            ((isMoment(time) && time.isValid()) || createLocal(time).isValid())
+        ) {
+            return createDuration({ from: this, to: time })
+                .locale(this.locale())
+                .humanize(!withoutSuffix);
         } else {
             return this.localeData().invalidDate();
         }
     }
 
-    function toNow (withoutSuffix) {
-        return this.to(local__createLocal(), withoutSuffix);
+    function toNow(withoutSuffix) {
+        return this.to(createLocal(), withoutSuffix);
     }
 
     // If passed a locale key, it will set the locale for this
     // instance.  Otherwise, it will return the locale configuration
     // variables for this instance.
-    function locale (key) {
+    function locale(key) {
         var newLocaleData;
 
         if (key === undefined) {
             return this._locale._abbr;
         } else {
-            newLocaleData = locale_locales__getLocale(key);
+            newLocaleData = getLocale(key);
             if (newLocaleData != null) {
                 this._locale = newLocaleData;
             }
         }
     );
 
-    function localeData () {
+    function localeData() {
         return this._locale;
     }
 
-    function startOf (units) {
+    var MS_PER_SECOND = 1000,
+        MS_PER_MINUTE = 60 * MS_PER_SECOND,
+        MS_PER_HOUR = 60 * MS_PER_MINUTE,
+        MS_PER_400_YEARS = (365 * 400 + 97) * 24 * MS_PER_HOUR;
+
+    // actual modulo - handles negative numbers (for dates before 1970):
+    function mod$1(dividend, divisor) {
+        return ((dividend % divisor) + divisor) % divisor;
+    }
+
+    function localStartOfDate(y, m, d) {
+        // the date constructor remaps years 0-99 to 1900-1999
+        if (y < 100 && y >= 0) {
+            // preserve leap years using a full 400 year cycle, then reset
+            return new Date(y + 400, m, d) - MS_PER_400_YEARS;
+        } else {
+            return new Date(y, m, d).valueOf();
+        }
+    }
+
+    function utcStartOfDate(y, m, d) {
+        // Date.UTC remaps years 0-99 to 1900-1999
+        if (y < 100 && y >= 0) {
+            // preserve leap years using a full 400 year cycle, then reset
+            return Date.UTC(y + 400, m, d) - MS_PER_400_YEARS;
+        } else {
+            return Date.UTC(y, m, d);
+        }
+    }
+
+    function startOf(units) {
+        var time, startOfDate;
         units = normalizeUnits(units);
-        // the following switch intentionally omits break keywords
-        // to utilize falling through the cases.
-        switch (units) {
-        case 'year':
-            this.month(0);
-            /* falls through */
-        case 'quarter':
-        case 'month':
-            this.date(1);
-            /* falls through */
-        case 'week':
-        case 'isoWeek':
-        case 'day':
-            this.hours(0);
-            /* falls through */
-        case 'hour':
-            this.minutes(0);
-            /* falls through */
-        case 'minute':
-            this.seconds(0);
-            /* falls through */
-        case 'second':
-            this.milliseconds(0);
-        }
-
-        // weeks are a special case
-        if (units === 'week') {
-            this.weekday(0);
-        }
-        if (units === 'isoWeek') {
-            this.isoWeekday(1);
-        }
-
-        // quarters are also special
-        if (units === 'quarter') {
-            this.month(Math.floor(this.month() / 3) * 3);
+        if (units === undefined || units === 'millisecond' || !this.isValid()) {
+            return this;
         }
 
+        startOfDate = this._isUTC ? utcStartOfDate : localStartOfDate;
+
+        switch (units) {
+            case 'year':
+                time = startOfDate(this.year(), 0, 1);
+                break;
+            case 'quarter':
+                time = startOfDate(
+                    this.year(),
+                    this.month() - (this.month() % 3),
+                    1
+                );
+                break;
+            case 'month':
+                time = startOfDate(this.year(), this.month(), 1);
+                break;
+            case 'week':
+                time = startOfDate(
+                    this.year(),
+                    this.month(),
+                    this.date() - this.weekday()
+                );
+                break;
+            case 'isoWeek':
+                time = startOfDate(
+                    this.year(),
+                    this.month(),
+                    this.date() - (this.isoWeekday() - 1)
+                );
+                break;
+            case 'day':
+            case 'date':
+                time = startOfDate(this.year(), this.month(), this.date());
+                break;
+            case 'hour':
+                time = this._d.valueOf();
+                time -= mod$1(
+                    time + (this._isUTC ? 0 : this.utcOffset() * MS_PER_MINUTE),
+                    MS_PER_HOUR
+                );
+                break;
+            case 'minute':
+                time = this._d.valueOf();
+                time -= mod$1(time, MS_PER_MINUTE);
+                break;
+            case 'second':
+                time = this._d.valueOf();
+                time -= mod$1(time, MS_PER_SECOND);
+                break;
+        }
+
+        this._d.setTime(time);
+        hooks.updateOffset(this, true);
         return this;
     }
 
-    function endOf (units) {
+    function endOf(units) {
+        var time, startOfDate;
         units = normalizeUnits(units);
-        if (units === undefined || units === 'millisecond') {
+        if (units === undefined || units === 'millisecond' || !this.isValid()) {
             return this;
         }
-        return this.startOf(units).add(1, (units === 'isoWeek' ? 'week' : units)).subtract(1, 'ms');
-    }
 
-    function to_type__valueOf () {
-        return +this._d - ((this._offset || 0) * 60000);
+        startOfDate = this._isUTC ? utcStartOfDate : localStartOfDate;
+
+        switch (units) {
+            case 'year':
+                time = startOfDate(this.year() + 1, 0, 1) - 1;
+                break;
+            case 'quarter':
+                time =
+                    startOfDate(
+                        this.year(),
+                        this.month() - (this.month() % 3) + 3,
+                        1
+                    ) - 1;
+                break;
+            case 'month':
+                time = startOfDate(this.year(), this.month() + 1, 1) - 1;
+                break;
+            case 'week':
+                time =
+                    startOfDate(
+                        this.year(),
+                        this.month(),
+                        this.date() - this.weekday() + 7
+                    ) - 1;
+                break;
+            case 'isoWeek':
+                time =
+                    startOfDate(
+                        this.year(),
+                        this.month(),
+                        this.date() - (this.isoWeekday() - 1) + 7
+                    ) - 1;
+                break;
+            case 'day':
+            case 'date':
+                time = startOfDate(this.year(), this.month(), this.date() + 1) - 1;
+                break;
+            case 'hour':
+                time = this._d.valueOf();
+                time +=
+                    MS_PER_HOUR -
+                    mod$1(
+                        time + (this._isUTC ? 0 : this.utcOffset() * MS_PER_MINUTE),
+                        MS_PER_HOUR
+                    ) -
+                    1;
+                break;
+            case 'minute':
+                time = this._d.valueOf();
+                time += MS_PER_MINUTE - mod$1(time, MS_PER_MINUTE) - 1;
+                break;
+            case 'second':
+                time = this._d.valueOf();
+                time += MS_PER_SECOND - mod$1(time, MS_PER_SECOND) - 1;
+                break;
+        }
+
+        this._d.setTime(time);
+        hooks.updateOffset(this, true);
+        return this;
     }
 
-    function unix () {
-        return Math.floor(+this / 1000);
+    function valueOf() {
+        return this._d.valueOf() - (this._offset || 0) * 60000;
     }
 
-    function toDate () {
-        return this._offset ? new Date(+this) : this._d;
+    function unix() {
+        return Math.floor(this.valueOf() / 1000);
     }
 
-    function toArray () {
-        var m = this;
-        return [m.year(), m.month(), m.date(), m.hour(), m.minute(), m.second(), m.millisecond()];
+    function toDate() {
+        return new Date(this.valueOf());
     }
 
-    function toObject () {
+    function toArray() {
+        var m = this;
+        return [
+            m.year(),
+            m.month(),
+            m.date(),
+            m.hour(),
+            m.minute(),
+            m.second(),
+            m.millisecond(),
+        ];
+    }
+
+    function toObject() {
         var m = this;
         return {
             years: m.year(),
             hours: m.hours(),
             minutes: m.minutes(),
             seconds: m.seconds(),
-            milliseconds: m.milliseconds()
+            milliseconds: m.milliseconds(),
         };
     }
 
-    function toJSON () {
-        // JSON.stringify(new Date(NaN)) === 'null'
-        return this.isValid() ? this.toISOString() : 'null';
+    function toJSON() {
+        // new Date(NaN).toJSON() === null
+        return this.isValid() ? this.toISOString() : null;
     }
 
-    function moment_valid__isValid () {
-        return valid__isValid(this);
+    function isValid$2() {
+        return isValid(this);
     }
 
-    function parsingFlags () {
+    function parsingFlags() {
         return extend({}, getParsingFlags(this));
     }
 
-    function invalidAt () {
+    function invalidAt() {
         return getParsingFlags(this).overflow;
     }
 
             format: this._f,
             locale: this._locale,
             isUTC: this._isUTC,
-            strict: this._strict
+            strict: this._strict,
         };
     }
 
-    // FORMATTING
-
-    addFormatToken(0, ['gg', 2], 0, function () {
-        return this.weekYear() % 100;
-    });
-
-    addFormatToken(0, ['GG', 2], 0, function () {
-        return this.isoWeekYear() % 100;
-    });
-
-    function addWeekYearFormatToken (token, getter) {
-        addFormatToken(0, [token, token.length], 0, getter);
-    }
-
-    addWeekYearFormatToken('gggg',     'weekYear');
-    addWeekYearFormatToken('ggggg',    'weekYear');
-    addWeekYearFormatToken('GGGG',  'isoWeekYear');
-    addWeekYearFormatToken('GGGGG', 'isoWeekYear');
-
-    // ALIASES
+    addFormatToken('N', 0, 0, 'eraAbbr');
+    addFormatToken('NN', 0, 0, 'eraAbbr');
+    addFormatToken('NNN', 0, 0, 'eraAbbr');
+    addFormatToken('NNNN', 0, 0, 'eraName');
+    addFormatToken('NNNNN', 0, 0, 'eraNarrow');
+
+    addFormatToken('y', ['y', 1], 'yo', 'eraYear');
+    addFormatToken('y', ['yy', 2], 0, 'eraYear');
+    addFormatToken('y', ['yyy', 3], 0, 'eraYear');
+    addFormatToken('y', ['yyyy', 4], 0, 'eraYear');
+
+    addRegexToken('N', matchEraAbbr);
+    addRegexToken('NN', matchEraAbbr);
+    addRegexToken('NNN', matchEraAbbr);
+    addRegexToken('NNNN', matchEraName);
+    addRegexToken('NNNNN', matchEraNarrow);
+
+    addParseToken(
+        ['N', 'NN', 'NNN', 'NNNN', 'NNNNN'],
+        function (input, array, config, token) {
+            var era = config._locale.erasParse(input, token, config._strict);
+            if (era) {
+                getParsingFlags(config).era = era;
+            } else {
+                getParsingFlags(config).invalidEra = input;
+            }
+        }
+    );
 
-    addUnitAlias('weekYear', 'gg');
-    addUnitAlias('isoWeekYear', 'GG');
+    addRegexToken('y', matchUnsigned);
+    addRegexToken('yy', matchUnsigned);
+    addRegexToken('yyy', matchUnsigned);
+    addRegexToken('yyyy', matchUnsigned);
+    addRegexToken('yo', matchEraYearOrdinal);
 
-    // PARSING
+    addParseToken(['y', 'yy', 'yyy', 'yyyy'], YEAR);
+    addParseToken(['yo'], function (input, array, config, token) {
+        var match;
+        if (config._locale._eraYearOrdinalRegex) {
+            match = input.match(config._locale._eraYearOrdinalRegex);
+        }
 
-    addRegexToken('G',      matchSigned);
-    addRegexToken('g',      matchSigned);
-    addRegexToken('GG',     match1to2, match2);
-    addRegexToken('gg',     match1to2, match2);
-    addRegexToken('GGGG',   match1to4, match4);
-    addRegexToken('gggg',   match1to4, match4);
-    addRegexToken('GGGGG',  match1to6, match6);
-    addRegexToken('ggggg',  match1to6, match6);
-
-    addWeekParseToken(['gggg', 'ggggg', 'GGGG', 'GGGGG'], function (input, week, config, token) {
-        week[token.substr(0, 2)] = toInt(input);
+        if (config._locale.eraYearOrdinalParse) {
+            array[YEAR] = config._locale.eraYearOrdinalParse(input, match);
+        } else {
+            array[YEAR] = parseInt(input, 10);
+        }
     });
 
-    addWeekParseToken(['gg', 'GG'], function (input, week, config, token) {
-        week[token] = utils_hooks__hooks.parseTwoDigitYear(input);
-    });
+    function localeEras(m, format) {
+        var i,
+            l,
+            date,
+            eras = this._eras || getLocale('en')._eras;
+        for (i = 0, l = eras.length; i < l; ++i) {
+            switch (typeof eras[i].since) {
+                case 'string':
+                    // truncate time
+                    date = hooks(eras[i].since).startOf('day');
+                    eras[i].since = date.valueOf();
+                    break;
+            }
 
-    // MOMENTS
+            switch (typeof eras[i].until) {
+                case 'undefined':
+                    eras[i].until = +Infinity;
+                    break;
+                case 'string':
+                    // truncate time
+                    date = hooks(eras[i].until).startOf('day').valueOf();
+                    eras[i].until = date.valueOf();
+                    break;
+            }
+        }
+        return eras;
+    }
+
+    function localeErasParse(eraName, format, strict) {
+        var i,
+            l,
+            eras = this.eras(),
+            name,
+            abbr,
+            narrow;
+        eraName = eraName.toUpperCase();
+
+        for (i = 0, l = eras.length; i < l; ++i) {
+            name = eras[i].name.toUpperCase();
+            abbr = eras[i].abbr.toUpperCase();
+            narrow = eras[i].narrow.toUpperCase();
+
+            if (strict) {
+                switch (format) {
+                    case 'N':
+                    case 'NN':
+                    case 'NNN':
+                        if (abbr === eraName) {
+                            return eras[i];
+                        }
+                        break;
 
-    function getSetWeekYear (input) {
-        return getSetWeekYearHelper.call(this,
-                input,
-                this.week(),
-                this.weekday(),
-                this.localeData()._week.dow,
-                this.localeData()._week.doy);
-    }
+                    case 'NNNN':
+                        if (name === eraName) {
+                            return eras[i];
+                        }
+                        break;
 
-    function getSetISOWeekYear (input) {
-        return getSetWeekYearHelper.call(this,
-                input, this.isoWeek(), this.isoWeekday(), 1, 4);
+                    case 'NNNNN':
+                        if (narrow === eraName) {
+                            return eras[i];
+                        }
+                        break;
+                }
+            } else if ([name, abbr, narrow].indexOf(eraName) >= 0) {
+                return eras[i];
+            }
+        }
     }
 
-    function getISOWeeksInYear () {
-        return weeksInYear(this.year(), 1, 4);
+    function localeErasConvertYear(era, year) {
+        var dir = era.since <= era.until ? +1 : -1;
+        if (year === undefined) {
+            return hooks(era.since).year();
+        } else {
+            return hooks(era.since).year() + (year - era.offset) * dir;
+        }
     }
 
-    function getWeeksInYear () {
-        var weekInfo = this.localeData()._week;
-        return weeksInYear(this.year(), weekInfo.dow, weekInfo.doy);
-    }
+    function getEraName() {
+        var i,
+            l,
+            val,
+            eras = this.localeData().eras();
+        for (i = 0, l = eras.length; i < l; ++i) {
+            // truncate time
+            val = this.clone().startOf('day').valueOf();
 
-    function getSetWeekYearHelper(input, week, weekday, dow, doy) {
-        var weeksTarget;
-        if (input == null) {
-            return weekOfYear(this, dow, doy).year;
-        } else {
-            weeksTarget = weeksInYear(input, dow, doy);
-            if (week > weeksTarget) {
-                week = weeksTarget;
+            if (eras[i].since <= val && val <= eras[i].until) {
+                return eras[i].name;
+            }
+            if (eras[i].until <= val && val <= eras[i].since) {
+                return eras[i].name;
             }
-            return setWeekAll.call(this, input, week, weekday, dow, doy);
         }
-    }
-
-    function setWeekAll(weekYear, week, weekday, dow, doy) {
-        var dayOfYearData = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy),
-            date = createUTCDate(dayOfYearData.year, 0, dayOfYearData.dayOfYear);
 
-        // console.log("got", weekYear, week, weekday, "set", date.toISOString());
-        this.year(date.getUTCFullYear());
-        this.month(date.getUTCMonth());
-        this.date(date.getUTCDate());
-        return this;
+        return '';
     }
 
-    // FORMATTING
-
-    addFormatToken('Q', 0, 'Qo', 'quarter');
-
-    // ALIASES
-
-    addUnitAlias('quarter', 'Q');
-
-    // PARSING
-
-    addRegexToken('Q', match1);
-    addParseToken('Q', function (input, array) {
-        array[MONTH] = (toInt(input) - 1) * 3;
-    });
+    function getEraNarrow() {
+        var i,
+            l,
+            val,
+            eras = this.localeData().eras();
+        for (i = 0, l = eras.length; i < l; ++i) {
+            // truncate time
+            val = this.clone().startOf('day').valueOf();
 
-    // MOMENTS
+            if (eras[i].since <= val && val <= eras[i].until) {
+                return eras[i].narrow;
+            }
+            if (eras[i].until <= val && val <= eras[i].since) {
+                return eras[i].narrow;
+            }
+        }
 
-    function getSetQuarter (input) {
-        return input == null ? Math.ceil((this.month() + 1) / 3) : this.month((input - 1) * 3 + this.month() % 3);
+        return '';
     }
 
-    // FORMATTING
-
-    addFormatToken('w', ['ww', 2], 'wo', 'week');
-    addFormatToken('W', ['WW', 2], 'Wo', 'isoWeek');
-
-    // ALIASES
-
-    addUnitAlias('week', 'w');
-    addUnitAlias('isoWeek', 'W');
+    function getEraAbbr() {
+        var i,
+            l,
+            val,
+            eras = this.localeData().eras();
+        for (i = 0, l = eras.length; i < l; ++i) {
+            // truncate time
+            val = this.clone().startOf('day').valueOf();
 
-    // PARSING
+            if (eras[i].since <= val && val <= eras[i].until) {
+                return eras[i].abbr;
+            }
+            if (eras[i].until <= val && val <= eras[i].since) {
+                return eras[i].abbr;
+            }
+        }
 
-    addRegexToken('w',  match1to2);
-    addRegexToken('ww', match1to2, match2);
-    addRegexToken('W',  match1to2);
-    addRegexToken('WW', match1to2, match2);
+        return '';
+    }
 
-    addWeekParseToken(['w', 'ww', 'W', 'WW'], function (input, week, config, token) {
-        week[token.substr(0, 1)] = toInt(input);
-    });
+    function getEraYear() {
+        var i,
+            l,
+            dir,
+            val,
+            eras = this.localeData().eras();
+        for (i = 0, l = eras.length; i < l; ++i) {
+            dir = eras[i].since <= eras[i].until ? +1 : -1;
 
-    // HELPERS
+            // truncate time
+            val = this.clone().startOf('day').valueOf();
 
-    // LOCALES
+            if (
+                (eras[i].since <= val && val <= eras[i].until) ||
+                (eras[i].until <= val && val <= eras[i].since)
+            ) {
+                return (
+                    (this.year() - hooks(eras[i].since).year()) * dir +
+                    eras[i].offset
+                );
+            }
+        }
 
-    function localeWeek (mom) {
-        return weekOfYear(mom, this._week.dow, this._week.doy).week;
+        return this.year();
     }
 
-    var defaultLocaleWeek = {
-        dow : 0, // Sunday is the first day of the week.
-        doy : 6  // The week that contains Jan 1st is the first week of the year.
-    };
-
-    function localeFirstDayOfWeek () {
-        return this._week.dow;
+    function erasNameRegex(isStrict) {
+        if (!hasOwnProp(this, '_erasNameRegex')) {
+            computeErasParse.call(this);
+        }
+        return isStrict ? this._erasNameRegex : this._erasRegex;
     }
 
-    function localeFirstDayOfYear () {
-        return this._week.doy;
+    function erasAbbrRegex(isStrict) {
+        if (!hasOwnProp(this, '_erasAbbrRegex')) {
+            computeErasParse.call(this);
+        }
+        return isStrict ? this._erasAbbrRegex : this._erasRegex;
     }
 
-    // MOMENTS
-
-    function getSetWeek (input) {
-        var week = this.localeData().week(this);
-        return input == null ? week : this.add((input - week) * 7, 'd');
+    function erasNarrowRegex(isStrict) {
+        if (!hasOwnProp(this, '_erasNarrowRegex')) {
+            computeErasParse.call(this);
+        }
+        return isStrict ? this._erasNarrowRegex : this._erasRegex;
     }
 
-    function getSetISOWeek (input) {
-        var week = weekOfYear(this, 1, 4).week;
-        return input == null ? week : this.add((input - week) * 7, 'd');
+    function matchEraAbbr(isStrict, locale) {
+        return locale.erasAbbrRegex(isStrict);
     }
 
-    // FORMATTING
-
-    addFormatToken('D', ['DD', 2], 'Do', 'date');
-
-    // ALIASES
+    function matchEraName(isStrict, locale) {
+        return locale.erasNameRegex(isStrict);
+    }
 
-    addUnitAlias('date', 'D');
+    function matchEraNarrow(isStrict, locale) {
+        return locale.erasNarrowRegex(isStrict);
+    }
 
-    // PARSING
+    function matchEraYearOrdinal(isStrict, locale) {
+        return locale._eraYearOrdinalRegex || matchUnsigned;
+    }
 
-    addRegexToken('D',  match1to2);
-    addRegexToken('DD', match1to2, match2);
-    addRegexToken('Do', function (isStrict, locale) {
-        return isStrict ? locale._ordinalParse : locale._ordinalParseLenient;
-    });
+    function computeErasParse() {
+        var abbrPieces = [],
+            namePieces = [],
+            narrowPieces = [],
+            mixedPieces = [],
+            i,
+            l,
+            eras = this.eras();
 
-    addParseToken(['D', 'DD'], DATE);
-    addParseToken('Do', function (input, array) {
-        array[DATE] = toInt(input.match(match1to2)[0], 10);
-    });
+        for (i = 0, l = eras.length; i < l; ++i) {
+            namePieces.push(regexEscape(eras[i].name));
+            abbrPieces.push(regexEscape(eras[i].abbr));
+            narrowPieces.push(regexEscape(eras[i].narrow));
 
-    // MOMENTS
+            mixedPieces.push(regexEscape(eras[i].name));
+            mixedPieces.push(regexEscape(eras[i].abbr));
+            mixedPieces.push(regexEscape(eras[i].narrow));
+        }
 
-    var getSetDayOfMonth = makeGetSet('Date', true);
+        this._erasRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
+        this._erasNameRegex = new RegExp('^(' + namePieces.join('|') + ')', 'i');
+        this._erasAbbrRegex = new RegExp('^(' + abbrPieces.join('|') + ')', 'i');
+        this._erasNarrowRegex = new RegExp(
+            '^(' + narrowPieces.join('|') + ')',
+            'i'
+        );
+    }
 
     // FORMATTING
 
-    addFormatToken('d', 0, 'do', 'day');
-
-    addFormatToken('dd', 0, 0, function (format) {
-        return this.localeData().weekdaysMin(this, format);
+    addFormatToken(0, ['gg', 2], 0, function () {
+        return this.weekYear() % 100;
     });
 
-    addFormatToken('ddd', 0, 0, function (format) {
-        return this.localeData().weekdaysShort(this, format);
+    addFormatToken(0, ['GG', 2], 0, function () {
+        return this.isoWeekYear() % 100;
     });
 
-    addFormatToken('dddd', 0, 0, function (format) {
-        return this.localeData().weekdays(this, format);
-    });
+    function addWeekYearFormatToken(token, getter) {
+        addFormatToken(0, [token, token.length], 0, getter);
+    }
 
-    addFormatToken('e', 0, 0, 'weekday');
-    addFormatToken('E', 0, 0, 'isoWeekday');
+    addWeekYearFormatToken('gggg', 'weekYear');
+    addWeekYearFormatToken('ggggg', 'weekYear');
+    addWeekYearFormatToken('GGGG', 'isoWeekYear');
+    addWeekYearFormatToken('GGGGG', 'isoWeekYear');
 
     // ALIASES
 
-    addUnitAlias('day', 'd');
-    addUnitAlias('weekday', 'e');
-    addUnitAlias('isoWeekday', 'E');
-
-    // PARSING
+    addUnitAlias('weekYear', 'gg');
+    addUnitAlias('isoWeekYear', 'GG');
 
-    addRegexToken('d',    match1to2);
-    addRegexToken('e',    match1to2);
-    addRegexToken('E',    match1to2);
-    addRegexToken('dd',   matchWord);
-    addRegexToken('ddd',  matchWord);
-    addRegexToken('dddd', matchWord);
+    // PRIORITY
 
-    addWeekParseToken(['dd', 'ddd', 'dddd'], function (input, week, config, token) {
-        var weekday = config._locale.weekdaysParse(input, token, config._strict);
-        // if we didn't get a weekday name, mark the date as invalid
-        if (weekday != null) {
-            week.d = weekday;
-        } else {
-            getParsingFlags(config).invalidWeekday = input;
-        }
-    });
+    addUnitPriority('weekYear', 1);
+    addUnitPriority('isoWeekYear', 1);
 
-    addWeekParseToken(['d', 'e', 'E'], function (input, week, config, token) {
-        week[token] = toInt(input);
-    });
+    // PARSING
 
-    // HELPERS
+    addRegexToken('G', matchSigned);
+    addRegexToken('g', matchSigned);
+    addRegexToken('GG', match1to2, match2);
+    addRegexToken('gg', match1to2, match2);
+    addRegexToken('GGGG', match1to4, match4);
+    addRegexToken('gggg', match1to4, match4);
+    addRegexToken('GGGGG', match1to6, match6);
+    addRegexToken('ggggg', match1to6, match6);
 
-    function parseWeekday(input, locale) {
-        if (typeof input !== 'string') {
-            return input;
+    addWeekParseToken(
+        ['gggg', 'ggggg', 'GGGG', 'GGGGG'],
+        function (input, week, config, token) {
+            week[token.substr(0, 2)] = toInt(input);
         }
+    );
 
-        if (!isNaN(input)) {
-            return parseInt(input, 10);
-        }
+    addWeekParseToken(['gg', 'GG'], function (input, week, config, token) {
+        week[token] = hooks.parseTwoDigitYear(input);
+    });
 
-        input = locale.weekdaysParse(input);
-        if (typeof input === 'number') {
-            return input;
-        }
+    // MOMENTS
 
-        return null;
+    function getSetWeekYear(input) {
+        return getSetWeekYearHelper.call(
+            this,
+            input,
+            this.week(),
+            this.weekday(),
+            this.localeData()._week.dow,
+            this.localeData()._week.doy
+        );
     }
 
-    // LOCALES
-
-    var defaultLocaleWeekdays = 'Sunday_Monday_Tuesday_Wednesday_Thursday_Friday_Saturday'.split('_');
-    function localeWeekdays (m, format) {
-        return isArray(this._weekdays) ? this._weekdays[m.day()] :
-            this._weekdays[this._weekdays.isFormat.test(format) ? 'format' : 'standalone'][m.day()];
+    function getSetISOWeekYear(input) {
+        return getSetWeekYearHelper.call(
+            this,
+            input,
+            this.isoWeek(),
+            this.isoWeekday(),
+            1,
+            4
+        );
     }
 
-    var defaultLocaleWeekdaysShort = 'Sun_Mon_Tue_Wed_Thu_Fri_Sat'.split('_');
-    function localeWeekdaysShort (m) {
-        return this._weekdaysShort[m.day()];
+    function getISOWeeksInYear() {
+        return weeksInYear(this.year(), 1, 4);
     }
 
-    var defaultLocaleWeekdaysMin = 'Su_Mo_Tu_We_Th_Fr_Sa'.split('_');
-    function localeWeekdaysMin (m) {
-        return this._weekdaysMin[m.day()];
+    function getISOWeeksInISOWeekYear() {
+        return weeksInYear(this.isoWeekYear(), 1, 4);
     }
 
-    function localeWeekdaysParse (weekdayName, format, strict) {
-        var i, mom, regex;
-
-        if (!this._weekdaysParse) {
-            this._weekdaysParse = [];
-            this._minWeekdaysParse = [];
-            this._shortWeekdaysParse = [];
-            this._fullWeekdaysParse = [];
-        }
-
-        for (i = 0; i < 7; i++) {
-            // make the regex if we don't have it already
-
-            mom = local__createLocal([2000, 1]).day(i);
-            if (strict && !this._fullWeekdaysParse[i]) {
-                this._fullWeekdaysParse[i] = new RegExp('^' + this.weekdays(mom, '').replace('.', '\.?') + '$', 'i');
-                this._shortWeekdaysParse[i] = new RegExp('^' + this.weekdaysShort(mom, '').replace('.', '\.?') + '$', 'i');
-                this._minWeekdaysParse[i] = new RegExp('^' + this.weekdaysMin(mom, '').replace('.', '\.?') + '$', 'i');
-            }
-            if (!this._weekdaysParse[i]) {
-                regex = '^' + this.weekdays(mom, '') + '|^' + this.weekdaysShort(mom, '') + '|^' + this.weekdaysMin(mom, '');
-                this._weekdaysParse[i] = new RegExp(regex.replace('.', ''), 'i');
-            }
-            // test the regex
-            if (strict && format === 'dddd' && this._fullWeekdaysParse[i].test(weekdayName)) {
-                return i;
-            } else if (strict && format === 'ddd' && this._shortWeekdaysParse[i].test(weekdayName)) {
-                return i;
-            } else if (strict && format === 'dd' && this._minWeekdaysParse[i].test(weekdayName)) {
-                return i;
-            } else if (!strict && this._weekdaysParse[i].test(weekdayName)) {
-                return i;
-            }
-        }
+    function getWeeksInYear() {
+        var weekInfo = this.localeData()._week;
+        return weeksInYear(this.year(), weekInfo.dow, weekInfo.doy);
     }
 
-    // MOMENTS
+    function getWeeksInWeekYear() {
+        var weekInfo = this.localeData()._week;
+        return weeksInYear(this.weekYear(), weekInfo.dow, weekInfo.doy);
+    }
 
-    function getSetDayOfWeek (input) {
-        if (!this.isValid()) {
-            return input != null ? this : NaN;
-        }
-        var day = this._isUTC ? this._d.getUTCDay() : this._d.getDay();
-        if (input != null) {
-            input = parseWeekday(input, this.localeData());
-            return this.add(input - day, 'd');
+    function getSetWeekYearHelper(input, week, weekday, dow, doy) {
+        var weeksTarget;
+        if (input == null) {
+            return weekOfYear(this, dow, doy).year;
         } else {
-            return day;
+            weeksTarget = weeksInYear(input, dow, doy);
+            if (week > weeksTarget) {
+                week = weeksTarget;
+            }
+            return setWeekAll.call(this, input, week, weekday, dow, doy);
         }
     }
 
-    function getSetLocaleDayOfWeek (input) {
-        if (!this.isValid()) {
-            return input != null ? this : NaN;
-        }
-        var weekday = (this.day() + 7 - this.localeData()._week.dow) % 7;
-        return input == null ? weekday : this.add(input - weekday, 'd');
-    }
+    function setWeekAll(weekYear, week, weekday, dow, doy) {
+        var dayOfYearData = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy),
+            date = createUTCDate(dayOfYearData.year, 0, dayOfYearData.dayOfYear);
 
-    function getSetISODayOfWeek (input) {
-        if (!this.isValid()) {
-            return input != null ? this : NaN;
-        }
-        // behaves the same as moment#day except
-        // as a getter, returns 7 instead of 0 (1-7 range instead of 0-6)
-        // as a setter, sunday should belong to the previous week.
-        return input == null ? this.day() || 7 : this.day(this.day() % 7 ? input : input - 7);
+        this.year(date.getUTCFullYear());
+        this.month(date.getUTCMonth());
+        this.date(date.getUTCDate());
+        return this;
     }
 
     // FORMATTING
 
-    addFormatToken('DDD', ['DDDD', 3], 'DDDo', 'dayOfYear');
+    addFormatToken('Q', 0, 'Qo', 'quarter');
 
     // ALIASES
 
-    addUnitAlias('dayOfYear', 'DDD');
+    addUnitAlias('quarter', 'Q');
+
+    // PRIORITY
+
+    addUnitPriority('quarter', 7);
 
     // PARSING
 
-    addRegexToken('DDD',  match1to3);
-    addRegexToken('DDDD', match3);
-    addParseToken(['DDD', 'DDDD'], function (input, array, config) {
-        config._dayOfYear = toInt(input);
+    addRegexToken('Q', match1);
+    addParseToken('Q', function (input, array) {
+        array[MONTH] = (toInt(input) - 1) * 3;
     });
 
-    // HELPERS
-
     // MOMENTS
 
-    function getSetDayOfYear (input) {
-        var dayOfYear = Math.round((this.clone().startOf('day') - this.clone().startOf('year')) / 864e5) + 1;
-        return input == null ? dayOfYear : this.add((input - dayOfYear), 'd');
+    function getSetQuarter(input) {
+        return input == null
+            ? Math.ceil((this.month() + 1) / 3)
+            : this.month((input - 1) * 3 + (this.month() % 3));
     }
 
     // FORMATTING
 
-    function hFormat() {
-        return this.hours() % 12 || 12;
-    }
+    addFormatToken('D', ['DD', 2], 'Do', 'date');
 
-    addFormatToken('H', ['HH', 2], 0, 'hour');
-    addFormatToken('h', ['hh', 2], 0, hFormat);
+    // ALIASES
 
-    addFormatToken('hmm', 0, 0, function () {
-        return '' + hFormat.apply(this) + zeroFill(this.minutes(), 2);
-    });
+    addUnitAlias('date', 'D');
 
-    addFormatToken('hmmss', 0, 0, function () {
-        return '' + hFormat.apply(this) + zeroFill(this.minutes(), 2) +
-            zeroFill(this.seconds(), 2);
-    });
+    // PRIORITY
+    addUnitPriority('date', 9);
 
-    addFormatToken('Hmm', 0, 0, function () {
-        return '' + this.hours() + zeroFill(this.minutes(), 2);
+    // PARSING
+
+    addRegexToken('D', match1to2);
+    addRegexToken('DD', match1to2, match2);
+    addRegexToken('Do', function (isStrict, locale) {
+        // TODO: Remove "ordinalParse" fallback in next major release.
+        return isStrict
+            ? locale._dayOfMonthOrdinalParse || locale._ordinalParse
+            : locale._dayOfMonthOrdinalParseLenient;
     });
 
-    addFormatToken('Hmmss', 0, 0, function () {
-        return '' + this.hours() + zeroFill(this.minutes(), 2) +
-            zeroFill(this.seconds(), 2);
+    addParseToken(['D', 'DD'], DATE);
+    addParseToken('Do', function (input, array) {
+        array[DATE] = toInt(input.match(match1to2)[0]);
     });
 
-    function meridiem (token, lowercase) {
-        addFormatToken(token, 0, 0, function () {
-            return this.localeData().meridiem(this.hours(), this.minutes(), lowercase);
-        });
-    }
+    // MOMENTS
 
-    meridiem('a', true);
-    meridiem('A', false);
+    var getSetDayOfMonth = makeGetSet('Date', true);
 
-    // ALIASES
+    // FORMATTING
 
-    addUnitAlias('hour', 'h');
+    addFormatToken('DDD', ['DDDD', 3], 'DDDo', 'dayOfYear');
 
-    // PARSING
+    // ALIASES
 
-    function matchMeridiem (isStrict, locale) {
-        return locale._meridiemParse;
-    }
+    addUnitAlias('dayOfYear', 'DDD');
 
-    addRegexToken('a',  matchMeridiem);
-    addRegexToken('A',  matchMeridiem);
-    addRegexToken('H',  match1to2);
-    addRegexToken('h',  match1to2);
-    addRegexToken('HH', match1to2, match2);
-    addRegexToken('hh', match1to2, match2);
+    // PRIORITY
+    addUnitPriority('dayOfYear', 4);
 
-    addRegexToken('hmm', match3to4);
-    addRegexToken('hmmss', match5to6);
-    addRegexToken('Hmm', match3to4);
-    addRegexToken('Hmmss', match5to6);
+    // PARSING
 
-    addParseToken(['H', 'HH'], HOUR);
-    addParseToken(['a', 'A'], function (input, array, config) {
-        config._isPm = config._locale.isPM(input);
-        config._meridiem = input;
-    });
-    addParseToken(['h', 'hh'], function (input, array, config) {
-        array[HOUR] = toInt(input);
-        getParsingFlags(config).bigHour = true;
-    });
-    addParseToken('hmm', function (input, array, config) {
-        var pos = input.length - 2;
-        array[HOUR] = toInt(input.substr(0, pos));
-        array[MINUTE] = toInt(input.substr(pos));
-        getParsingFlags(config).bigHour = true;
-    });
-    addParseToken('hmmss', function (input, array, config) {
-        var pos1 = input.length - 4;
-        var pos2 = input.length - 2;
-        array[HOUR] = toInt(input.substr(0, pos1));
-        array[MINUTE] = toInt(input.substr(pos1, 2));
-        array[SECOND] = toInt(input.substr(pos2));
-        getParsingFlags(config).bigHour = true;
-    });
-    addParseToken('Hmm', function (input, array, config) {
-        var pos = input.length - 2;
-        array[HOUR] = toInt(input.substr(0, pos));
-        array[MINUTE] = toInt(input.substr(pos));
-    });
-    addParseToken('Hmmss', function (input, array, config) {
-        var pos1 = input.length - 4;
-        var pos2 = input.length - 2;
-        array[HOUR] = toInt(input.substr(0, pos1));
-        array[MINUTE] = toInt(input.substr(pos1, 2));
-        array[SECOND] = toInt(input.substr(pos2));
+    addRegexToken('DDD', match1to3);
+    addRegexToken('DDDD', match3);
+    addParseToken(['DDD', 'DDDD'], function (input, array, config) {
+        config._dayOfYear = toInt(input);
     });
 
-    // LOCALES
-
-    function localeIsPM (input) {
-        // IE8 Quirks Mode & IE7 Standards Mode do not allow accessing strings like arrays
-        // Using charAt should be more compatible.
-        return ((input + '').toLowerCase().charAt(0) === 'p');
-    }
-
-    var defaultLocaleMeridiemParse = /[ap]\.?m?\.?/i;
-    function localeMeridiem (hours, minutes, isLower) {
-        if (hours > 11) {
-            return isLower ? 'pm' : 'PM';
-        } else {
-            return isLower ? 'am' : 'AM';
-        }
-    }
-
+    // HELPERS
 
     // MOMENTS
 
-    // Setting the hour should keep the time, because the user explicitly
-    // specified which hour he wants. So trying to maintain the same hour (in
-    // a new timezone) makes sense. Adding/subtracting hours does not follow
-    // this rule.
-    var getSetHour = makeGetSet('Hours', true);
+    function getSetDayOfYear(input) {
+        var dayOfYear =
+            Math.round(
+                (this.clone().startOf('day') - this.clone().startOf('year')) / 864e5
+            ) + 1;
+        return input == null ? dayOfYear : this.add(input - dayOfYear, 'd');
+    }
 
     // FORMATTING
 
 
     addUnitAlias('minute', 'm');
 
+    // PRIORITY
+
+    addUnitPriority('minute', 14);
+
     // PARSING
 
-    addRegexToken('m',  match1to2);
+    addRegexToken('m', match1to2);
     addRegexToken('mm', match1to2, match2);
     addParseToken(['m', 'mm'], MINUTE);
 
 
     addUnitAlias('second', 's');
 
+    // PRIORITY
+
+    addUnitPriority('second', 15);
+
     // PARSING
 
-    addRegexToken('s',  match1to2);
+    addRegexToken('s', match1to2);
     addRegexToken('ss', match1to2, match2);
     addParseToken(['s', 'ss'], SECOND);
 
         return this.millisecond() * 1000000;
     });
 
-
     // ALIASES
 
     addUnitAlias('millisecond', 'ms');
 
+    // PRIORITY
+
+    addUnitPriority('millisecond', 16);
+
     // PARSING
 
-    addRegexToken('S',    match1to3, match1);
-    addRegexToken('SS',   match1to3, match2);
-    addRegexToken('SSS',  match1to3, match3);
+    addRegexToken('S', match1to3, match1);
+    addRegexToken('SS', match1to3, match2);
+    addRegexToken('SSS', match1to3, match3);
 
-    var token;
+    var token, getSetMillisecond;
     for (token = 'SSSS'; token.length <= 9; token += 'S') {
         addRegexToken(token, matchUnsigned);
     }
     for (token = 'S'; token.length <= 9; token += 'S') {
         addParseToken(token, parseMs);
     }
-    // MOMENTS
 
-    var getSetMillisecond = makeGetSet('Milliseconds', false);
+    getSetMillisecond = makeGetSet('Milliseconds', false);
 
     // FORMATTING
 
-    addFormatToken('z',  0, 0, 'zoneAbbr');
+    addFormatToken('z', 0, 0, 'zoneAbbr');
     addFormatToken('zz', 0, 0, 'zoneName');
 
     // MOMENTS
 
-    function getZoneAbbr () {
+    function getZoneAbbr() {
         return this._isUTC ? 'UTC' : '';
     }
 
-    function getZoneName () {
+    function getZoneName() {
         return this._isUTC ? 'Coordinated Universal Time' : '';
     }
 
-    var momentPrototype__proto = Moment.prototype;
-
-    momentPrototype__proto.add               = add_subtract__add;
-    momentPrototype__proto.calendar          = moment_calendar__calendar;
-    momentPrototype__proto.clone             = clone;
-    momentPrototype__proto.diff              = diff;
-    momentPrototype__proto.endOf             = endOf;
-    momentPrototype__proto.format            = format;
-    momentPrototype__proto.from              = from;
-    momentPrototype__proto.fromNow           = fromNow;
-    momentPrototype__proto.to                = to;
-    momentPrototype__proto.toNow             = toNow;
-    momentPrototype__proto.get               = getSet;
-    momentPrototype__proto.invalidAt         = invalidAt;
-    momentPrototype__proto.isAfter           = isAfter;
-    momentPrototype__proto.isBefore          = isBefore;
-    momentPrototype__proto.isBetween         = isBetween;
-    momentPrototype__proto.isSame            = isSame;
-    momentPrototype__proto.isSameOrAfter     = isSameOrAfter;
-    momentPrototype__proto.isSameOrBefore    = isSameOrBefore;
-    momentPrototype__proto.isValid           = moment_valid__isValid;
-    momentPrototype__proto.lang              = lang;
-    momentPrototype__proto.locale            = locale;
-    momentPrototype__proto.localeData        = localeData;
-    momentPrototype__proto.max               = prototypeMax;
-    momentPrototype__proto.min               = prototypeMin;
-    momentPrototype__proto.parsingFlags      = parsingFlags;
-    momentPrototype__proto.set               = getSet;
-    momentPrototype__proto.startOf           = startOf;
-    momentPrototype__proto.subtract          = add_subtract__subtract;
-    momentPrototype__proto.toArray           = toArray;
-    momentPrototype__proto.toObject          = toObject;
-    momentPrototype__proto.toDate            = toDate;
-    momentPrototype__proto.toISOString       = moment_format__toISOString;
-    momentPrototype__proto.toJSON            = toJSON;
-    momentPrototype__proto.toString          = toString;
-    momentPrototype__proto.unix              = unix;
-    momentPrototype__proto.valueOf           = to_type__valueOf;
-    momentPrototype__proto.creationData      = creationData;
-
-    // Year
-    momentPrototype__proto.year       = getSetYear;
-    momentPrototype__proto.isLeapYear = getIsLeapYear;
-
-    // Week Year
-    momentPrototype__proto.weekYear    = getSetWeekYear;
-    momentPrototype__proto.isoWeekYear = getSetISOWeekYear;
-
-    // Quarter
-    momentPrototype__proto.quarter = momentPrototype__proto.quarters = getSetQuarter;
-
-    // Month
-    momentPrototype__proto.month       = getSetMonth;
-    momentPrototype__proto.daysInMonth = getDaysInMonth;
-
-    // Week
-    momentPrototype__proto.week           = momentPrototype__proto.weeks        = getSetWeek;
-    momentPrototype__proto.isoWeek        = momentPrototype__proto.isoWeeks     = getSetISOWeek;
-    momentPrototype__proto.weeksInYear    = getWeeksInYear;
-    momentPrototype__proto.isoWeeksInYear = getISOWeeksInYear;
-
-    // Day
-    momentPrototype__proto.date       = getSetDayOfMonth;
-    momentPrototype__proto.day        = momentPrototype__proto.days             = getSetDayOfWeek;
-    momentPrototype__proto.weekday    = getSetLocaleDayOfWeek;
-    momentPrototype__proto.isoWeekday = getSetISODayOfWeek;
-    momentPrototype__proto.dayOfYear  = getSetDayOfYear;
-
-    // Hour
-    momentPrototype__proto.hour = momentPrototype__proto.hours = getSetHour;
-
-    // Minute
-    momentPrototype__proto.minute = momentPrototype__proto.minutes = getSetMinute;
-
-    // Second
-    momentPrototype__proto.second = momentPrototype__proto.seconds = getSetSecond;
-
-    // Millisecond
-    momentPrototype__proto.millisecond = momentPrototype__proto.milliseconds = getSetMillisecond;
-
-    // Offset
-    momentPrototype__proto.utcOffset            = getSetOffset;
-    momentPrototype__proto.utc                  = setOffsetToUTC;
-    momentPrototype__proto.local                = setOffsetToLocal;
-    momentPrototype__proto.parseZone            = setOffsetToParsedOffset;
-    momentPrototype__proto.hasAlignedHourOffset = hasAlignedHourOffset;
-    momentPrototype__proto.isDST                = isDaylightSavingTime;
-    momentPrototype__proto.isDSTShifted         = isDaylightSavingTimeShifted;
-    momentPrototype__proto.isLocal              = isLocal;
-    momentPrototype__proto.isUtcOffset          = isUtcOffset;
-    momentPrototype__proto.isUtc                = isUtc;
-    momentPrototype__proto.isUTC                = isUtc;
-
-    // Timezone
-    momentPrototype__proto.zoneAbbr = getZoneAbbr;
-    momentPrototype__proto.zoneName = getZoneName;
-
-    // Deprecations
-    momentPrototype__proto.dates  = deprecate('dates accessor is deprecated. Use date instead.', getSetDayOfMonth);
-    momentPrototype__proto.months = deprecate('months accessor is deprecated. Use month instead', getSetMonth);
-    momentPrototype__proto.years  = deprecate('years accessor is deprecated. Use year instead', getSetYear);
-    momentPrototype__proto.zone   = deprecate('moment().zone is deprecated, use moment().utcOffset instead. https://github.com/moment/moment/issues/1779', getSetZone);
-
-    var momentPrototype = momentPrototype__proto;
-
-    function moment__createUnix (input) {
-        return local__createLocal(input * 1000);
-    }
-
-    function moment__createInZone () {
-        return local__createLocal.apply(null, arguments).parseZone();
+    var proto = Moment.prototype;
+
+    proto.add = add;
+    proto.calendar = calendar$1;
+    proto.clone = clone;
+    proto.diff = diff;
+    proto.endOf = endOf;
+    proto.format = format;
+    proto.from = from;
+    proto.fromNow = fromNow;
+    proto.to = to;
+    proto.toNow = toNow;
+    proto.get = stringGet;
+    proto.invalidAt = invalidAt;
+    proto.isAfter = isAfter;
+    proto.isBefore = isBefore;
+    proto.isBetween = isBetween;
+    proto.isSame = isSame;
+    proto.isSameOrAfter = isSameOrAfter;
+    proto.isSameOrBefore = isSameOrBefore;
+    proto.isValid = isValid$2;
+    proto.lang = lang;
+    proto.locale = locale;
+    proto.localeData = localeData;
+    proto.max = prototypeMax;
+    proto.min = prototypeMin;
+    proto.parsingFlags = parsingFlags;
+    proto.set = stringSet;
+    proto.startOf = startOf;
+    proto.subtract = subtract;
+    proto.toArray = toArray;
+    proto.toObject = toObject;
+    proto.toDate = toDate;
+    proto.toISOString = toISOString;
+    proto.inspect = inspect;
+    if (typeof Symbol !== 'undefined' && Symbol.for != null) {
+        proto[Symbol.for('nodejs.util.inspect.custom')] = function () {
+            return 'Moment<' + this.format() + '>';
+        };
     }
+    proto.toJSON = toJSON;
+    proto.toString = toString;
+    proto.unix = unix;
+    proto.valueOf = valueOf;
+    proto.creationData = creationData;
+    proto.eraName = getEraName;
+    proto.eraNarrow = getEraNarrow;
+    proto.eraAbbr = getEraAbbr;
+    proto.eraYear = getEraYear;
+    proto.year = getSetYear;
+    proto.isLeapYear = getIsLeapYear;
+    proto.weekYear = getSetWeekYear;
+    proto.isoWeekYear = getSetISOWeekYear;
+    proto.quarter = proto.quarters = getSetQuarter;
+    proto.month = getSetMonth;
+    proto.daysInMonth = getDaysInMonth;
+    proto.week = proto.weeks = getSetWeek;
+    proto.isoWeek = proto.isoWeeks = getSetISOWeek;
+    proto.weeksInYear = getWeeksInYear;
+    proto.weeksInWeekYear = getWeeksInWeekYear;
+    proto.isoWeeksInYear = getISOWeeksInYear;
+    proto.isoWeeksInISOWeekYear = getISOWeeksInISOWeekYear;
+    proto.date = getSetDayOfMonth;
+    proto.day = proto.days = getSetDayOfWeek;
+    proto.weekday = getSetLocaleDayOfWeek;
+    proto.isoWeekday = getSetISODayOfWeek;
+    proto.dayOfYear = getSetDayOfYear;
+    proto.hour = proto.hours = getSetHour;
+    proto.minute = proto.minutes = getSetMinute;
+    proto.second = proto.seconds = getSetSecond;
+    proto.millisecond = proto.milliseconds = getSetMillisecond;
+    proto.utcOffset = getSetOffset;
+    proto.utc = setOffsetToUTC;
+    proto.local = setOffsetToLocal;
+    proto.parseZone = setOffsetToParsedOffset;
+    proto.hasAlignedHourOffset = hasAlignedHourOffset;
+    proto.isDST = isDaylightSavingTime;
+    proto.isLocal = isLocal;
+    proto.isUtcOffset = isUtcOffset;
+    proto.isUtc = isUtc;
+    proto.isUTC = isUtc;
+    proto.zoneAbbr = getZoneAbbr;
+    proto.zoneName = getZoneName;
+    proto.dates = deprecate(
+        'dates accessor is deprecated. Use date instead.',
+        getSetDayOfMonth
+    );
+    proto.months = deprecate(
+        'months accessor is deprecated. Use month instead',
+        getSetMonth
+    );
+    proto.years = deprecate(
+        'years accessor is deprecated. Use year instead',
+        getSetYear
+    );
+    proto.zone = deprecate(
+        'moment().zone is deprecated, use moment().utcOffset instead. http://momentjs.com/guides/#/warnings/zone/',
+        getSetZone
+    );
+    proto.isDSTShifted = deprecate(
+        'isDSTShifted is deprecated. See http://momentjs.com/guides/#/warnings/dst-shifted/ for more information',
+        isDaylightSavingTimeShifted
+    );
 
-    var defaultCalendar = {
-        sameDay : '[Today at] LT',
-        nextDay : '[Tomorrow at] LT',
-        nextWeek : 'dddd [at] LT',
-        lastDay : '[Yesterday at] LT',
-        lastWeek : '[Last] dddd [at] LT',
-        sameElse : 'L'
-    };
-
-    function locale_calendar__calendar (key, mom, now) {
-        var output = this._calendar[key];
-        return isFunction(output) ? output.call(mom, now) : output;
+    function createUnix(input) {
+        return createLocal(input * 1000);
     }
 
-    var defaultLongDateFormat = {
-        LTS  : 'h:mm:ss A',
-        LT   : 'h:mm A',
-        L    : 'MM/DD/YYYY',
-        LL   : 'MMMM D, YYYY',
-        LLL  : 'MMMM D, YYYY h:mm A',
-        LLLL : 'dddd, MMMM D, YYYY h:mm A'
-    };
-
-    function longDateFormat (key) {
-        var format = this._longDateFormat[key],
-            formatUpper = this._longDateFormat[key.toUpperCase()];
-
-        if (format || !formatUpper) {
-            return format;
-        }
-
-        this._longDateFormat[key] = formatUpper.replace(/MMMM|MM|DD|dddd/g, function (val) {
-            return val.slice(1);
-        });
-
-        return this._longDateFormat[key];
+    function createInZone() {
+        return createLocal.apply(null, arguments).parseZone();
     }
 
-    var defaultInvalidDate = 'Invalid date';
-
-    function invalidDate () {
-        return this._invalidDate;
+    function preParsePostFormat(string) {
+        return string;
     }
 
-    var defaultOrdinal = '%d';
-    var defaultOrdinalParse = /\d{1,2}/;
-
-    function ordinal (number) {
-        return this._ordinal.replace('%d', number);
+    var proto$1 = Locale.prototype;
+
+    proto$1.calendar = calendar;
+    proto$1.longDateFormat = longDateFormat;
+    proto$1.invalidDate = invalidDate;
+    proto$1.ordinal = ordinal;
+    proto$1.preparse = preParsePostFormat;
+    proto$1.postformat = preParsePostFormat;
+    proto$1.relativeTime = relativeTime;
+    proto$1.pastFuture = pastFuture;
+    proto$1.set = set;
+    proto$1.eras = localeEras;
+    proto$1.erasParse = localeErasParse;
+    proto$1.erasConvertYear = localeErasConvertYear;
+    proto$1.erasAbbrRegex = erasAbbrRegex;
+    proto$1.erasNameRegex = erasNameRegex;
+    proto$1.erasNarrowRegex = erasNarrowRegex;
+
+    proto$1.months = localeMonths;
+    proto$1.monthsShort = localeMonthsShort;
+    proto$1.monthsParse = localeMonthsParse;
+    proto$1.monthsRegex = monthsRegex;
+    proto$1.monthsShortRegex = monthsShortRegex;
+    proto$1.week = localeWeek;
+    proto$1.firstDayOfYear = localeFirstDayOfYear;
+    proto$1.firstDayOfWeek = localeFirstDayOfWeek;
+
+    proto$1.weekdays = localeWeekdays;
+    proto$1.weekdaysMin = localeWeekdaysMin;
+    proto$1.weekdaysShort = localeWeekdaysShort;
+    proto$1.weekdaysParse = localeWeekdaysParse;
+
+    proto$1.weekdaysRegex = weekdaysRegex;
+    proto$1.weekdaysShortRegex = weekdaysShortRegex;
+    proto$1.weekdaysMinRegex = weekdaysMinRegex;
+
+    proto$1.isPM = localeIsPM;
+    proto$1.meridiem = localeMeridiem;
+
+    function get$1(format, index, field, setter) {
+        var locale = getLocale(),
+            utc = createUTC().set(setter, index);
+        return locale[field](utc, format);
     }
 
-    function preParsePostFormat (string) {
-        return string;
-    }
+    function listMonthsImpl(format, index, field) {
+        if (isNumber(format)) {
+            index = format;
+            format = undefined;
+        }
 
-    var defaultRelativeTime = {
-        future : 'in %s',
-        past   : '%s ago',
-        s  : 'a few seconds',
-        m  : 'a minute',
-        mm : '%d minutes',
-        h  : 'an hour',
-        hh : '%d hours',
-        d  : 'a day',
-        dd : '%d days',
-        M  : 'a month',
-        MM : '%d months',
-        y  : 'a year',
-        yy : '%d years'
-    };
+        format = format || '';
 
-    function relative__relativeTime (number, withoutSuffix, string, isFuture) {
-        var output = this._relativeTime[string];
-        return (isFunction(output)) ?
-            output(number, withoutSuffix, string, isFuture) :
-            output.replace(/%d/i, number);
-    }
+        if (index != null) {
+            return get$1(format, index, field, 'month');
+        }
 
-    function pastFuture (diff, output) {
-        var format = this._relativeTime[diff > 0 ? 'future' : 'past'];
-        return isFunction(format) ? format(output) : format.replace(/%s/i, output);
+        var i,
+            out = [];
+        for (i = 0; i < 12; i++) {
+            out[i] = get$1(format, i, field, 'month');
+        }
+        return out;
     }
 
-    function locale_set__set (config) {
-        var prop, i;
-        for (i in config) {
-            prop = config[i];
-            if (isFunction(prop)) {
-                this[i] = prop;
-            } else {
-                this['_' + i] = prop;
+    // ()
+    // (5)
+    // (fmt, 5)
+    // (fmt)
+    // (true)
+    // (true, 5)
+    // (true, fmt, 5)
+    // (true, fmt)
+    function listWeekdaysImpl(localeSorted, format, index, field) {
+        if (typeof localeSorted === 'boolean') {
+            if (isNumber(format)) {
+                index = format;
+                format = undefined;
             }
-        }
-        // Lenient ordinal parsing accepts just a number in addition to
-        // number + (possibly) stuff coming from _ordinalParseLenient.
-        this._ordinalParseLenient = new RegExp(this._ordinalParse.source + '|' + (/\d{1,2}/).source);
-    }
-
-    var prototype__proto = Locale.prototype;
-
-    prototype__proto._calendar       = defaultCalendar;
-    prototype__proto.calendar        = locale_calendar__calendar;
-    prototype__proto._longDateFormat = defaultLongDateFormat;
-    prototype__proto.longDateFormat  = longDateFormat;
-    prototype__proto._invalidDate    = defaultInvalidDate;
-    prototype__proto.invalidDate     = invalidDate;
-    prototype__proto._ordinal        = defaultOrdinal;
-    prototype__proto.ordinal         = ordinal;
-    prototype__proto._ordinalParse   = defaultOrdinalParse;
-    prototype__proto.preparse        = preParsePostFormat;
-    prototype__proto.postformat      = preParsePostFormat;
-    prototype__proto._relativeTime   = defaultRelativeTime;
-    prototype__proto.relativeTime    = relative__relativeTime;
-    prototype__proto.pastFuture      = pastFuture;
-    prototype__proto.set             = locale_set__set;
-
-    // Month
-    prototype__proto.months            =        localeMonths;
-    prototype__proto._months           = defaultLocaleMonths;
-    prototype__proto.monthsShort       =        localeMonthsShort;
-    prototype__proto._monthsShort      = defaultLocaleMonthsShort;
-    prototype__proto.monthsParse       =        localeMonthsParse;
-    prototype__proto._monthsRegex      = defaultMonthsRegex;
-    prototype__proto.monthsRegex       = monthsRegex;
-    prototype__proto._monthsShortRegex = defaultMonthsShortRegex;
-    prototype__proto.monthsShortRegex  = monthsShortRegex;
-
-    // Week
-    prototype__proto.week = localeWeek;
-    prototype__proto._week = defaultLocaleWeek;
-    prototype__proto.firstDayOfYear = localeFirstDayOfYear;
-    prototype__proto.firstDayOfWeek = localeFirstDayOfWeek;
-
-    // Day of Week
-    prototype__proto.weekdays       =        localeWeekdays;
-    prototype__proto._weekdays      = defaultLocaleWeekdays;
-    prototype__proto.weekdaysMin    =        localeWeekdaysMin;
-    prototype__proto._weekdaysMin   = defaultLocaleWeekdaysMin;
-    prototype__proto.weekdaysShort  =        localeWeekdaysShort;
-    prototype__proto._weekdaysShort = defaultLocaleWeekdaysShort;
-    prototype__proto.weekdaysParse  =        localeWeekdaysParse;
-
-    // Hours
-    prototype__proto.isPM = localeIsPM;
-    prototype__proto._meridiemParse = defaultLocaleMeridiemParse;
-    prototype__proto.meridiem = localeMeridiem;
-
-    function lists__get (format, index, field, setter) {
-        var locale = locale_locales__getLocale();
-        var utc = create_utc__createUTC().set(setter, index);
-        return locale[field](utc, format);
-    }
 
-    function list (format, index, field, count, setter) {
-        if (typeof format === 'number') {
+            format = format || '';
+        } else {
+            format = localeSorted;
             index = format;
-            format = undefined;
+            localeSorted = false;
+
+            if (isNumber(format)) {
+                index = format;
+                format = undefined;
+            }
+
+            format = format || '';
         }
 
-        format = format || '';
+        var locale = getLocale(),
+            shift = localeSorted ? locale._week.dow : 0,
+            i,
+            out = [];
 
         if (index != null) {
-            return lists__get(format, index, field, setter);
+            return get$1(format, (index + shift) % 7, field, 'day');
         }
 
-        var i;
-        var out = [];
-        for (i = 0; i < count; i++) {
-            out[i] = lists__get(format, i, field, setter);
+        for (i = 0; i < 7; i++) {
+            out[i] = get$1(format, (i + shift) % 7, field, 'day');
         }
         return out;
     }
 
-    function lists__listMonths (format, index) {
-        return list(format, index, 'months', 12, 'month');
+    function listMonths(format, index) {
+        return listMonthsImpl(format, index, 'months');
     }
 
-    function lists__listMonthsShort (format, index) {
-        return list(format, index, 'monthsShort', 12, 'month');
+    function listMonthsShort(format, index) {
+        return listMonthsImpl(format, index, 'monthsShort');
     }
 
-    function lists__listWeekdays (format, index) {
-        return list(format, index, 'weekdays', 7, 'day');
+    function listWeekdays(localeSorted, format, index) {
+        return listWeekdaysImpl(localeSorted, format, index, 'weekdays');
     }
 
-    function lists__listWeekdaysShort (format, index) {
-        return list(format, index, 'weekdaysShort', 7, 'day');
+    function listWeekdaysShort(localeSorted, format, index) {
+        return listWeekdaysImpl(localeSorted, format, index, 'weekdaysShort');
     }
 
-    function lists__listWeekdaysMin (format, index) {
-        return list(format, index, 'weekdaysMin', 7, 'day');
+    function listWeekdaysMin(localeSorted, format, index) {
+        return listWeekdaysImpl(localeSorted, format, index, 'weekdaysMin');
     }
 
-    locale_locales__getSetGlobalLocale('en', {
-        ordinalParse: /\d{1,2}(th|st|nd|rd)/,
-        ordinal : function (number) {
+    getSetGlobalLocale('en', {
+        eras: [
+            {
+                since: '0001-01-01',
+                until: +Infinity,
+                offset: 1,
+                name: 'Anno Domini',
+                narrow: 'AD',
+                abbr: 'AD',
+            },
+            {
+                since: '0000-12-31',
+                until: -Infinity,
+                offset: 1,
+                name: 'Before Christ',
+                narrow: 'BC',
+                abbr: 'BC',
+            },
+        ],
+        dayOfMonthOrdinalParse: /\d{1,2}(th|st|nd|rd)/,
+        ordinal: function (number) {
             var b = number % 10,
-                output = (toInt(number % 100 / 10) === 1) ? 'th' :
-                (b === 1) ? 'st' :
-                (b === 2) ? 'nd' :
-                (b === 3) ? 'rd' : 'th';
+                output =
+                    toInt((number % 100) / 10) === 1
+                        ? 'th'
+                        : b === 1
+                        ? 'st'
+                        : b === 2
+                        ? 'nd'
+                        : b === 3
+                        ? 'rd'
+                        : 'th';
             return number + output;
-        }
+        },
     });
 
     // Side effect imports
-    utils_hooks__hooks.lang = deprecate('moment.lang is deprecated. Use moment.locale instead.', locale_locales__getSetGlobalLocale);
-    utils_hooks__hooks.langData = deprecate('moment.langData is deprecated. Use moment.localeData instead.', locale_locales__getLocale);
+
+    hooks.lang = deprecate(
+        'moment.lang is deprecated. Use moment.locale instead.',
+        getSetGlobalLocale
+    );
+    hooks.langData = deprecate(
+        'moment.langData is deprecated. Use moment.localeData instead.',
+        getLocale
+    );
 
     var mathAbs = Math.abs;
 
-    function duration_abs__abs () {
-        var data           = this._data;
+    function abs() {
+        var data = this._data;
 
         this._milliseconds = mathAbs(this._milliseconds);
-        this._days         = mathAbs(this._days);
-        this._months       = mathAbs(this._months);
+        this._days = mathAbs(this._days);
+        this._months = mathAbs(this._months);
 
-        data.milliseconds  = mathAbs(data.milliseconds);
-        data.seconds       = mathAbs(data.seconds);
-        data.minutes       = mathAbs(data.minutes);
-        data.hours         = mathAbs(data.hours);
-        data.months        = mathAbs(data.months);
-        data.years         = mathAbs(data.years);
+        data.milliseconds = mathAbs(data.milliseconds);
+        data.seconds = mathAbs(data.seconds);
+        data.minutes = mathAbs(data.minutes);
+        data.hours = mathAbs(data.hours);
+        data.months = mathAbs(data.months);
+        data.years = mathAbs(data.years);
 
         return this;
     }
 
-    function duration_add_subtract__addSubtract (duration, input, value, direction) {
-        var other = create__createDuration(input, value);
+    function addSubtract$1(duration, input, value, direction) {
+        var other = createDuration(input, value);
 
         duration._milliseconds += direction * other._milliseconds;
-        duration._days         += direction * other._days;
-        duration._months       += direction * other._months;
+        duration._days += direction * other._days;
+        duration._months += direction * other._months;
 
         return duration._bubble();
     }
 
     // supports only 2.0-style add(1, 's') or add(duration)
-    function duration_add_subtract__add (input, value) {
-        return duration_add_subtract__addSubtract(this, input, value, 1);
+    function add$1(input, value) {
+        return addSubtract$1(this, input, value, 1);
     }
 
     // supports only 2.0-style subtract(1, 's') or subtract(duration)
-    function duration_add_subtract__subtract (input, value) {
-        return duration_add_subtract__addSubtract(this, input, value, -1);
+    function subtract$1(input, value) {
+        return addSubtract$1(this, input, value, -1);
     }
 
-    function absCeil (number) {
+    function absCeil(number) {
         if (number < 0) {
             return Math.floor(number);
         } else {
         }
     }
 
-    function bubble () {
-        var milliseconds = this._milliseconds;
-        var days         = this._days;
-        var months       = this._months;
-        var data         = this._data;
-        var seconds, minutes, hours, years, monthsFromDays;
+    function bubble() {
+        var milliseconds = this._milliseconds,
+            days = this._days,
+            months = this._months,
+            data = this._data,
+            seconds,
+            minutes,
+            hours,
+            years,
+            monthsFromDays;
 
         // if we have a mix of positive and negative values, bubble down first
         // check: https://github.com/moment/moment/issues/2166
-        if (!((milliseconds >= 0 && days >= 0 && months >= 0) ||
-                (milliseconds <= 0 && days <= 0 && months <= 0))) {
+        if (
+            !(
+                (milliseconds >= 0 && days >= 0 && months >= 0) ||
+                (milliseconds <= 0 && days <= 0 && months <= 0)
+            )
+        ) {
             milliseconds += absCeil(monthsToDays(months) + days) * 864e5;
             days = 0;
             months = 0;
         // examples of what that means.
         data.milliseconds = milliseconds % 1000;
 
-        seconds           = absFloor(milliseconds / 1000);
-        data.seconds      = seconds % 60;
+        seconds = absFloor(milliseconds / 1000);
+        data.seconds = seconds % 60;
 
-        minutes           = absFloor(seconds / 60);
-        data.minutes      = minutes % 60;
+        minutes = absFloor(seconds / 60);
+        data.minutes = minutes % 60;
 
-        hours             = absFloor(minutes / 60);
-        data.hours        = hours % 24;
+        hours = absFloor(minutes / 60);
+        data.hours = hours % 24;
 
         days += absFloor(hours / 24);
 
         years = absFloor(months / 12);
         months %= 12;
 
-        data.days   = days;
+        data.days = days;
         data.months = months;
-        data.years  = years;
+        data.years = years;
 
         return this;
     }
 
-    function daysToMonths (days) {
+    function daysToMonths(days) {
         // 400 years have 146097 days (taking into account leap year rules)
         // 400 years have 12 months === 4800
-        return days * 4800 / 146097;
+        return (days * 4800) / 146097;
     }
 
-    function monthsToDays (months) {
+    function monthsToDays(months) {
         // the reverse of daysToMonths
-        return months * 146097 / 4800;
+        return (months * 146097) / 4800;
     }
 
-    function as (units) {
-        var days;
-        var months;
-        var milliseconds = this._milliseconds;
+    function as(units) {
+        if (!this.isValid()) {
+            return NaN;
+        }
+        var days,
+            months,
+            milliseconds = this._milliseconds;
 
         units = normalizeUnits(units);
 
-        if (units === 'month' || units === 'year') {
-            days   = this._days   + milliseconds / 864e5;
+        if (units === 'month' || units === 'quarter' || units === 'year') {
+            days = this._days + milliseconds / 864e5;
             months = this._months + daysToMonths(days);
-            return units === 'month' ? months : months / 12;
+            switch (units) {
+                case 'month':
+                    return months;
+                case 'quarter':
+                    return months / 3;
+                case 'year':
+                    return months / 12;
+            }
         } else {
             // handle milliseconds separately because of floating point math errors (issue #1867)
             days = this._days + Math.round(monthsToDays(this._months));
             switch (units) {
-                case 'week'   : return days / 7     + milliseconds / 6048e5;
-                case 'day'    : return days         + milliseconds / 864e5;
-                case 'hour'   : return days * 24    + milliseconds / 36e5;
-                case 'minute' : return days * 1440  + milliseconds / 6e4;
-                case 'second' : return days * 86400 + milliseconds / 1000;
+                case 'week':
+                    return days / 7 + milliseconds / 6048e5;
+                case 'day':
+                    return days + milliseconds / 864e5;
+                case 'hour':
+                    return days * 24 + milliseconds / 36e5;
+                case 'minute':
+                    return days * 1440 + milliseconds / 6e4;
+                case 'second':
+                    return days * 86400 + milliseconds / 1000;
                 // Math.floor prevents floating point math errors here
-                case 'millisecond': return Math.floor(days * 864e5) + milliseconds;
-                default: throw new Error('Unknown unit ' + units);
+                case 'millisecond':
+                    return Math.floor(days * 864e5) + milliseconds;
+                default:
+                    throw new Error('Unknown unit ' + units);
             }
         }
     }
 
     // TODO: Use this.as('ms')?
-    function duration_as__valueOf () {
+    function valueOf$1() {
+        if (!this.isValid()) {
+            return NaN;
+        }
         return (
             this._milliseconds +
             this._days * 864e5 +
         );
     }
 
-    function makeAs (alias) {
+    function makeAs(alias) {
         return function () {
             return this.as(alias);
         };
     }
 
-    var asMilliseconds = makeAs('ms');
-    var asSeconds      = makeAs('s');
-    var asMinutes      = makeAs('m');
-    var asHours        = makeAs('h');
-    var asDays         = makeAs('d');
-    var asWeeks        = makeAs('w');
-    var asMonths       = makeAs('M');
-    var asYears        = makeAs('y');
+    var asMilliseconds = makeAs('ms'),
+        asSeconds = makeAs('s'),
+        asMinutes = makeAs('m'),
+        asHours = makeAs('h'),
+        asDays = makeAs('d'),
+        asWeeks = makeAs('w'),
+        asMonths = makeAs('M'),
+        asQuarters = makeAs('Q'),
+        asYears = makeAs('y');
+
+    function clone$1() {
+        return createDuration(this);
+    }
 
-    function duration_get__get (units) {
+    function get$2(units) {
         units = normalizeUnits(units);
-        return this[units + 's']();
+        return this.isValid() ? this[units + 's']() : NaN;
     }
 
     function makeGetter(name) {
         return function () {
-            return this._data[name];
+            return this.isValid() ? this._data[name] : NaN;
         };
     }
 
-    var milliseconds = makeGetter('milliseconds');
-    var seconds      = makeGetter('seconds');
-    var minutes      = makeGetter('minutes');
-    var hours        = makeGetter('hours');
-    var days         = makeGetter('days');
-    var months       = makeGetter('months');
-    var years        = makeGetter('years');
+    var milliseconds = makeGetter('milliseconds'),
+        seconds = makeGetter('seconds'),
+        minutes = makeGetter('minutes'),
+        hours = makeGetter('hours'),
+        days = makeGetter('days'),
+        months = makeGetter('months'),
+        years = makeGetter('years');
 
-    function weeks () {
+    function weeks() {
         return absFloor(this.days() / 7);
     }
 
-    var round = Math.round;
-    var thresholds = {
-        s: 45,  // seconds to minute
-        m: 45,  // minutes to hour
-        h: 22,  // hours to day
-        d: 26,  // days to month
-        M: 11   // months to year
-    };
+    var round = Math.round,
+        thresholds = {
+            ss: 44, // a few seconds to seconds
+            s: 45, // seconds to minute
+            m: 45, // minutes to hour
+            h: 22, // hours to day
+            d: 26, // days to month/week
+            w: null, // weeks to month
+            M: 11, // months to year
+        };
 
     // helper function for moment.fn.from, moment.fn.fromNow, and moment.duration.fn.humanize
     function substituteTimeAgo(string, number, withoutSuffix, isFuture, locale) {
         return locale.relativeTime(number || 1, !!withoutSuffix, string, isFuture);
     }
 
-    function duration_humanize__relativeTime (posNegDuration, withoutSuffix, locale) {
-        var duration = create__createDuration(posNegDuration).abs();
-        var seconds  = round(duration.as('s'));
-        var minutes  = round(duration.as('m'));
-        var hours    = round(duration.as('h'));
-        var days     = round(duration.as('d'));
-        var months   = round(duration.as('M'));
-        var years    = round(duration.as('y'));
-
-        var a = seconds < thresholds.s && ['s', seconds]  ||
-                minutes <= 1           && ['m']           ||
-                minutes < thresholds.m && ['mm', minutes] ||
-                hours   <= 1           && ['h']           ||
-                hours   < thresholds.h && ['hh', hours]   ||
-                days    <= 1           && ['d']           ||
-                days    < thresholds.d && ['dd', days]    ||
-                months  <= 1           && ['M']           ||
-                months  < thresholds.M && ['MM', months]  ||
-                years   <= 1           && ['y']           || ['yy', years];
+    function relativeTime$1(posNegDuration, withoutSuffix, thresholds, locale) {
+        var duration = createDuration(posNegDuration).abs(),
+            seconds = round(duration.as('s')),
+            minutes = round(duration.as('m')),
+            hours = round(duration.as('h')),
+            days = round(duration.as('d')),
+            months = round(duration.as('M')),
+            weeks = round(duration.as('w')),
+            years = round(duration.as('y')),
+            a =
+                (seconds <= thresholds.ss && ['s', seconds]) ||
+                (seconds < thresholds.s && ['ss', seconds]) ||
+                (minutes <= 1 && ['m']) ||
+                (minutes < thresholds.m && ['mm', minutes]) ||
+                (hours <= 1 && ['h']) ||
+                (hours < thresholds.h && ['hh', hours]) ||
+                (days <= 1 && ['d']) ||
+                (days < thresholds.d && ['dd', days]);
+
+        if (thresholds.w != null) {
+            a =
+                a ||
+                (weeks <= 1 && ['w']) ||
+                (weeks < thresholds.w && ['ww', weeks]);
+        }
+        a = a ||
+            (months <= 1 && ['M']) ||
+            (months < thresholds.M && ['MM', months]) ||
+            (years <= 1 && ['y']) || ['yy', years];
 
         a[2] = withoutSuffix;
         a[3] = +posNegDuration > 0;
         return substituteTimeAgo.apply(null, a);
     }
 
+    // This function allows you to set the rounding function for relative time strings
+    function getSetRelativeTimeRounding(roundingFunction) {
+        if (roundingFunction === undefined) {
+            return round;
+        }
+        if (typeof roundingFunction === 'function') {
+            round = roundingFunction;
+            return true;
+        }
+        return false;
+    }
+
     // This function allows you to set a threshold for relative time strings
-    function duration_humanize__getSetRelativeTimeThreshold (threshold, limit) {
+    function getSetRelativeTimeThreshold(threshold, limit) {
         if (thresholds[threshold] === undefined) {
             return false;
         }
             return thresholds[threshold];
         }
         thresholds[threshold] = limit;
+        if (threshold === 's') {
+            thresholds.ss = limit - 1;
+        }
         return true;
     }
 
-    function humanize (withSuffix) {
-        var locale = this.localeData();
-        var output = duration_humanize__relativeTime(this, !withSuffix, locale);
+    function humanize(argWithSuffix, argThresholds) {
+        if (!this.isValid()) {
+            return this.localeData().invalidDate();
+        }
+
+        var withSuffix = false,
+            th = thresholds,
+            locale,
+            output;
+
+        if (typeof argWithSuffix === 'object') {
+            argThresholds = argWithSuffix;
+            argWithSuffix = false;
+        }
+        if (typeof argWithSuffix === 'boolean') {
+            withSuffix = argWithSuffix;
+        }
+        if (typeof argThresholds === 'object') {
+            th = Object.assign({}, thresholds, argThresholds);
+            if (argThresholds.s != null && argThresholds.ss == null) {
+                th.ss = argThresholds.s - 1;
+            }
+        }
+
+        locale = this.localeData();
+        output = relativeTime$1(this, !withSuffix, th, locale);
 
         if (withSuffix) {
             output = locale.pastFuture(+this, output);
         return locale.postformat(output);
     }
 
-    var iso_string__abs = Math.abs;
+    var abs$1 = Math.abs;
+
+    function sign(x) {
+        return (x > 0) - (x < 0) || +x;
+    }
 
-    function iso_string__toISOString() {
+    function toISOString$1() {
         // for ISO strings we do not use the normal bubbling rules:
         //  * milliseconds bubble up until they become hours
         //  * days do not bubble at all
         // This is because there is no context-free conversion between hours and days
         // (think of clock changes)
         // and also not between days and months (28-31 days per month)
-        var seconds = iso_string__abs(this._milliseconds) / 1000;
-        var days         = iso_string__abs(this._days);
-        var months       = iso_string__abs(this._months);
-        var minutes, hours, years;
+        if (!this.isValid()) {
+            return this.localeData().invalidDate();
+        }
+
+        var seconds = abs$1(this._milliseconds) / 1000,
+            days = abs$1(this._days),
+            months = abs$1(this._months),
+            minutes,
+            hours,
+            years,
+            s,
+            total = this.asSeconds(),
+            totalSign,
+            ymSign,
+            daysSign,
+            hmsSign;
+
+        if (!total) {
+            // this is the same as C#'s (Noda) and python (isodate)...
+            // but not other JS (goog.date)
+            return 'P0D';
+        }
 
         // 3600 seconds -> 60 minutes -> 1 hour
-        minutes           = absFloor(seconds / 60);
-        hours             = absFloor(minutes / 60);
+        minutes = absFloor(seconds / 60);
+        hours = absFloor(minutes / 60);
         seconds %= 60;
         minutes %= 60;
 
         // 12 months -> 1 year
-        years  = absFloor(months / 12);
+        years = absFloor(months / 12);
         months %= 12;
 
-
         // inspired by https://github.com/dordille/moment-isoduration/blob/master/moment.isoduration.js
-        var Y = years;
-        var M = months;
-        var D = days;
-        var h = hours;
-        var m = minutes;
-        var s = seconds;
-        var total = this.asSeconds();
+        s = seconds ? seconds.toFixed(3).replace(/\.?0+$/, '') : '';
 
-        if (!total) {
-            // this is the same as C#'s (Noda) and python (isodate)...
-            // but not other JS (goog.date)
-            return 'P0D';
-        }
+        totalSign = total < 0 ? '-' : '';
+        ymSign = sign(this._months) !== sign(total) ? '-' : '';
+        daysSign = sign(this._days) !== sign(total) ? '-' : '';
+        hmsSign = sign(this._milliseconds) !== sign(total) ? '-' : '';
 
-        return (total < 0 ? '-' : '') +
+        return (
+            totalSign +
             'P' +
-            (Y ? Y + 'Y' : '') +
-            (M ? M + 'M' : '') +
-            (D ? D + 'D' : '') +
-            ((h || m || s) ? 'T' : '') +
-            (h ? h + 'H' : '') +
-            (m ? m + 'M' : '') +
-            (s ? s + 'S' : '');
-    }
-
-    var duration_prototype__proto = Duration.prototype;
-
-    duration_prototype__proto.abs            = duration_abs__abs;
-    duration_prototype__proto.add            = duration_add_subtract__add;
-    duration_prototype__proto.subtract       = duration_add_subtract__subtract;
-    duration_prototype__proto.as             = as;
-    duration_prototype__proto.asMilliseconds = asMilliseconds;
-    duration_prototype__proto.asSeconds      = asSeconds;
-    duration_prototype__proto.asMinutes      = asMinutes;
-    duration_prototype__proto.asHours        = asHours;
-    duration_prototype__proto.asDays         = asDays;
-    duration_prototype__proto.asWeeks        = asWeeks;
-    duration_prototype__proto.asMonths       = asMonths;
-    duration_prototype__proto.asYears        = asYears;
-    duration_prototype__proto.valueOf        = duration_as__valueOf;
-    duration_prototype__proto._bubble        = bubble;
-    duration_prototype__proto.get            = duration_get__get;
-    duration_prototype__proto.milliseconds   = milliseconds;
-    duration_prototype__proto.seconds        = seconds;
-    duration_prototype__proto.minutes        = minutes;
-    duration_prototype__proto.hours          = hours;
-    duration_prototype__proto.days           = days;
-    duration_prototype__proto.weeks          = weeks;
-    duration_prototype__proto.months         = months;
-    duration_prototype__proto.years          = years;
-    duration_prototype__proto.humanize       = humanize;
-    duration_prototype__proto.toISOString    = iso_string__toISOString;
-    duration_prototype__proto.toString       = iso_string__toISOString;
-    duration_prototype__proto.toJSON         = iso_string__toISOString;
-    duration_prototype__proto.locale         = locale;
-    duration_prototype__proto.localeData     = localeData;
-
-    // Deprecations
-    duration_prototype__proto.toIsoString = deprecate('toIsoString() is deprecated. Please use toISOString() instead (notice the capitals)', iso_string__toISOString);
-    duration_prototype__proto.lang = lang;
+            (years ? ymSign + years + 'Y' : '') +
+            (months ? ymSign + months + 'M' : '') +
+            (days ? daysSign + days + 'D' : '') +
+            (hours || minutes || seconds ? 'T' : '') +
+            (hours ? hmsSign + hours + 'H' : '') +
+            (minutes ? hmsSign + minutes + 'M' : '') +
+            (seconds ? hmsSign + s + 'S' : '')
+        );
+    }
 
-    // Side effect imports
+    var proto$2 = Duration.prototype;
+
+    proto$2.isValid = isValid$1;
+    proto$2.abs = abs;
+    proto$2.add = add$1;
+    proto$2.subtract = subtract$1;
+    proto$2.as = as;
+    proto$2.asMilliseconds = asMilliseconds;
+    proto$2.asSeconds = asSeconds;
+    proto$2.asMinutes = asMinutes;
+    proto$2.asHours = asHours;
+    proto$2.asDays = asDays;
+    proto$2.asWeeks = asWeeks;
+    proto$2.asMonths = asMonths;
+    proto$2.asQuarters = asQuarters;
+    proto$2.asYears = asYears;
+    proto$2.valueOf = valueOf$1;
+    proto$2._bubble = bubble;
+    proto$2.clone = clone$1;
+    proto$2.get = get$2;
+    proto$2.milliseconds = milliseconds;
+    proto$2.seconds = seconds;
+    proto$2.minutes = minutes;
+    proto$2.hours = hours;
+    proto$2.days = days;
+    proto$2.weeks = weeks;
+    proto$2.months = months;
+    proto$2.years = years;
+    proto$2.humanize = humanize;
+    proto$2.toISOString = toISOString$1;
+    proto$2.toString = toISOString$1;
+    proto$2.toJSON = toISOString$1;
+    proto$2.locale = locale;
+    proto$2.localeData = localeData;
+
+    proto$2.toIsoString = deprecate(
+        'toIsoString() is deprecated. Please use toISOString() instead (notice the capitals)',
+        toISOString$1
+    );
+    proto$2.lang = lang;
 
     // FORMATTING
 
     addRegexToken('x', matchSigned);
     addRegexToken('X', matchTimestamp);
     addParseToken('X', function (input, array, config) {
-        config._d = new Date(parseFloat(input, 10) * 1000);
+        config._d = new Date(parseFloat(input) * 1000);
     });
     addParseToken('x', function (input, array, config) {
         config._d = new Date(toInt(input));
     });
 
-    // Side effect imports
+    //! moment.js
+
+    hooks.version = '2.29.2';
+
+    setHookCallback(createLocal);
+
+    hooks.fn = proto;
+    hooks.min = min;
+    hooks.max = max;
+    hooks.now = now;
+    hooks.utc = createUTC;
+    hooks.unix = createUnix;
+    hooks.months = listMonths;
+    hooks.isDate = isDate;
+    hooks.locale = getSetGlobalLocale;
+    hooks.invalid = createInvalid;
+    hooks.duration = createDuration;
+    hooks.isMoment = isMoment;
+    hooks.weekdays = listWeekdays;
+    hooks.parseZone = createInZone;
+    hooks.localeData = getLocale;
+    hooks.isDuration = isDuration;
+    hooks.monthsShort = listMonthsShort;
+    hooks.weekdaysMin = listWeekdaysMin;
+    hooks.defineLocale = defineLocale;
+    hooks.updateLocale = updateLocale;
+    hooks.locales = listLocales;
+    hooks.weekdaysShort = listWeekdaysShort;
+    hooks.normalizeUnits = normalizeUnits;
+    hooks.relativeTimeRounding = getSetRelativeTimeRounding;
+    hooks.relativeTimeThreshold = getSetRelativeTimeThreshold;
+    hooks.calendarFormat = getCalendarFormat;
+    hooks.prototype = proto;
+
+    // currently HTML5 input type only supports 24-hour formats
+    hooks.HTML5_FMT = {
+        DATETIME_LOCAL: 'YYYY-MM-DDTHH:mm', // <input type="datetime-local" />
+        DATETIME_LOCAL_SECONDS: 'YYYY-MM-DDTHH:mm:ss', // <input type="datetime-local" step="1" />
+        DATETIME_LOCAL_MS: 'YYYY-MM-DDTHH:mm:ss.SSS', // <input type="datetime-local" step="0.001" />
+        DATE: 'YYYY-MM-DD', // <input type="date" />
+        TIME: 'HH:mm', // <input type="time" />
+        TIME_SECONDS: 'HH:mm:ss', // <input type="time" step="1" />
+        TIME_MS: 'HH:mm:ss.SSS', // <input type="time" step="0.001" />
+        WEEK: 'GGGG-[W]WW', // <input type="week" />
+        MONTH: 'YYYY-MM', // <input type="month" />
+    };
 
+    return hooks;
 
-    utils_hooks__hooks.version = '2.11.1';
-
-    setHookCallback(local__createLocal);
-
-    utils_hooks__hooks.fn                    = momentPrototype;
-    utils_hooks__hooks.min                   = min;
-    utils_hooks__hooks.max                   = max;
-    utils_hooks__hooks.now                   = now;
-    utils_hooks__hooks.utc                   = create_utc__createUTC;
-    utils_hooks__hooks.unix                  = moment__createUnix;
-    utils_hooks__hooks.months                = lists__listMonths;
-    utils_hooks__hooks.isDate                = isDate;
-    utils_hooks__hooks.locale                = locale_locales__getSetGlobalLocale;
-    utils_hooks__hooks.invalid               = valid__createInvalid;
-    utils_hooks__hooks.duration              = create__createDuration;
-    utils_hooks__hooks.isMoment              = isMoment;
-    utils_hooks__hooks.weekdays              = lists__listWeekdays;
-    utils_hooks__hooks.parseZone             = moment__createInZone;
-    utils_hooks__hooks.localeData            = locale_locales__getLocale;
-    utils_hooks__hooks.isDuration            = isDuration;
-    utils_hooks__hooks.monthsShort           = lists__listMonthsShort;
-    utils_hooks__hooks.weekdaysMin           = lists__listWeekdaysMin;
-    utils_hooks__hooks.defineLocale          = defineLocale;
-    utils_hooks__hooks.weekdaysShort         = lists__listWeekdaysShort;
-    utils_hooks__hooks.normalizeUnits        = normalizeUnits;
-    utils_hooks__hooks.relativeTimeThreshold = duration_humanize__getSetRelativeTimeThreshold;
-    utils_hooks__hooks.prototype             = momentPrototype;
-
-    var _moment = utils_hooks__hooks;
-
-    return _moment;
-
-}));
\ No newline at end of file
+})));
index c635ec0b356079d988d10ecba7db39ad4559dd97..2e559835a0acf9bc03ffef58fc824739bbb1f7f1 100644 (file)
 //! moment.js
-//! version : 2.9.0
+//! version : 2.29.2
 //! authors : Tim Wood, Iskren Chernev, Moment.js contributors
 //! license : MIT
 //! momentjs.com
 
-(function (undefined) {
-    /************************************
-        Constants
-    ************************************/
-
-    var moment,
-        VERSION = '2.9.0',
-        // the global-scope this is NOT the global object in Node.js
-        globalScope = (typeof global !== 'undefined' && (typeof window === 'undefined' || window === global.window)) ? global : this,
-        oldGlobalMoment,
-        round = Math.round,
-        hasOwnProperty = Object.prototype.hasOwnProperty,
-        i,
-
-        YEAR = 0,
-        MONTH = 1,
-        DATE = 2,
-        HOUR = 3,
-        MINUTE = 4,
-        SECOND = 5,
-        MILLISECOND = 6,
-
-        // internal storage for locale config files
-        locales = {},
-
-        // extra moment internal properties (plugins register props here)
-        momentProperties = [],
-
-        // check for nodeJS
-        hasModule = (typeof module !== 'undefined' && module && module.exports),
-
-        // ASP.NET json date format regex
-        aspNetJsonRegex = /^\/?Date\((\-?\d+)/i,
-        aspNetTimeSpanJsonRegex = /(\-)?(?:(\d*)\.)?(\d+)\:(\d+)(?:\:(\d+)\.?(\d{3})?)?/,
-
-        // from http://docs.closure-library.googlecode.com/git/closure_goog_date_date.js.source.html
-        // somewhat more in line with 4.4.3.2 2004 spec, but allows decimal anywhere
-        isoDurationRegex = /^(-)?P(?:(?:([0-9,.]*)Y)?(?:([0-9,.]*)M)?(?:([0-9,.]*)D)?(?:T(?:([0-9,.]*)H)?(?:([0-9,.]*)M)?(?:([0-9,.]*)S)?)?|([0-9,.]*)W)$/,
-
-        // format tokens
-        formattingTokens = /(\[[^\[]*\])|(\\)?(Mo|MM?M?M?|Do|DDDo|DD?D?D?|ddd?d?|do?|w[o|w]?|W[o|W]?|Q|YYYYYY|YYYYY|YYYY|YY|gg(ggg?)?|GG(GGG?)?|e|E|a|A|hh?|HH?|mm?|ss?|S{1,4}|x|X|zz?|ZZ?|.)/g,
-        localFormattingTokens = /(\[[^\[]*\])|(\\)?(LTS|LT|LL?L?L?|l{1,4})/g,
-
-        // parsing token regexes
-        parseTokenOneOrTwoDigits = /\d\d?/, // 0 - 99
-        parseTokenOneToThreeDigits = /\d{1,3}/, // 0 - 999
-        parseTokenOneToFourDigits = /\d{1,4}/, // 0 - 9999
-        parseTokenOneToSixDigits = /[+\-]?\d{1,6}/, // -999,999 - 999,999
-        parseTokenDigits = /\d+/, // nonzero number of digits
-        parseTokenWord = /[0-9]*['a-z\u00A0-\u05FF\u0700-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+|[\u0600-\u06FF\/]+(\s*?[\u0600-\u06FF]+){1,2}/i, // any word (or two) characters or numbers including two/three word month in arabic.
-        parseTokenTimezone = /Z|[\+\-]\d\d:?\d\d/gi, // +00:00 -00:00 +0000 -0000 or Z
-        parseTokenT = /T/i, // T (ISO separator)
-        parseTokenOffsetMs = /[\+\-]?\d+/, // 1234567890123
-        parseTokenTimestampMs = /[\+\-]?\d+(\.\d{1,3})?/, // 123456789 123456789.123
-
-        //strict parsing regexes
-        parseTokenOneDigit = /\d/, // 0 - 9
-        parseTokenTwoDigits = /\d\d/, // 00 - 99
-        parseTokenThreeDigits = /\d{3}/, // 000 - 999
-        parseTokenFourDigits = /\d{4}/, // 0000 - 9999
-        parseTokenSixDigits = /[+-]?\d{6}/, // -999,999 - 999,999
-        parseTokenSignedNumber = /[+-]?\d+/, // -inf - inf
-
-        // iso 8601 regex
-        // 0000-00-00 0000-W00 or 0000-W00-0 + T + 00 or 00:00 or 00:00:00 or 00:00:00.000 + +00:00 or +0000 or +00)
-        isoRegex = /^\s*(?:[+-]\d{6}|\d{4})-(?:(\d\d-\d\d)|(W\d\d$)|(W\d\d-\d)|(\d\d\d))((T| )(\d\d(:\d\d(:\d\d(\.\d+)?)?)?)?([\+\-]\d\d(?::?\d\d)?|\s*Z)?)?$/,
-
-        isoFormat = 'YYYY-MM-DDTHH:mm:ssZ',
+;(function (global, factory) {
+    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+    typeof define === 'function' && define.amd ? define(factory) :
+    global.moment = factory()
+}(this, (function () { 'use strict';
 
-        isoDates = [
-            ['YYYYYY-MM-DD', /[+-]\d{6}-\d{2}-\d{2}/],
-            ['YYYY-MM-DD', /\d{4}-\d{2}-\d{2}/],
-            ['GGGG-[W]WW-E', /\d{4}-W\d{2}-\d/],
-            ['GGGG-[W]WW', /\d{4}-W\d{2}/],
-            ['YYYY-DDD', /\d{4}-\d{3}/]
-        ],
-
-        // iso time formats and regexes
-        isoTimes = [
-            ['HH:mm:ss.SSSS', /(T| )\d\d:\d\d:\d\d\.\d+/],
-            ['HH:mm:ss', /(T| )\d\d:\d\d:\d\d/],
-            ['HH:mm', /(T| )\d\d:\d\d/],
-            ['HH', /(T| )\d\d/]
-        ],
-
-        // timezone chunker '+10:00' > ['10', '00'] or '-1530' > ['-', '15', '30']
-        parseTimezoneChunker = /([\+\-]|\d\d)/gi,
-
-        // getter and setter names
-        proxyGettersAndSetters = 'Date|Hours|Minutes|Seconds|Milliseconds'.split('|'),
-        unitMillisecondFactors = {
-            'Milliseconds' : 1,
-            'Seconds' : 1e3,
-            'Minutes' : 6e4,
-            'Hours' : 36e5,
-            'Days' : 864e5,
-            'Months' : 2592e6,
-            'Years' : 31536e6
-        },
+    var hookCallback;
 
-        unitAliases = {
-            ms : 'millisecond',
-            s : 'second',
-            m : 'minute',
-            h : 'hour',
-            d : 'day',
-            D : 'date',
-            w : 'week',
-            W : 'isoWeek',
-            M : 'month',
-            Q : 'quarter',
-            y : 'year',
-            DDD : 'dayOfYear',
-            e : 'weekday',
-            E : 'isoWeekday',
-            gg: 'weekYear',
-            GG: 'isoWeekYear'
-        },
+    function hooks() {
+        return hookCallback.apply(null, arguments);
+    }
 
-        camelFunctions = {
-            dayofyear : 'dayOfYear',
-            isoweekday : 'isoWeekday',
-            isoweek : 'isoWeek',
-            weekyear : 'weekYear',
-            isoweekyear : 'isoWeekYear'
-        },
+    // This is done to register the method called with moment()
+    // without creating circular dependencies.
+    function setHookCallback(callback) {
+        hookCallback = callback;
+    }
 
-        // format function strings
-        formatFunctions = {},
+    function isArray(input) {
+        return (
+            input instanceof Array ||
+            Object.prototype.toString.call(input) === '[object Array]'
+        );
+    }
 
-        // default relative time thresholds
-        relativeTimeThresholds = {
-            s: 45,  // seconds to minute
-            m: 45,  // minutes to hour
-            h: 22,  // hours to day
-            d: 26,  // days to month
-            M: 11   // months to year
-        },
+    function isObject(input) {
+        // IE8 will treat undefined and null as object if it wasn't for
+        // input != null
+        return (
+            input != null &&
+            Object.prototype.toString.call(input) === '[object Object]'
+        );
+    }
 
-        // tokens to ordinalize and pad
-        ordinalizeTokens = 'DDD w W M D d'.split(' '),
-        paddedTokens = 'M D H h m s w W'.split(' '),
+    function hasOwnProp(a, b) {
+        return Object.prototype.hasOwnProperty.call(a, b);
+    }
 
-        formatTokenFunctions = {
-            M    : function () {
-                return this.month() + 1;
-            },
-            MMM  : function (format) {
-                return this.localeData().monthsShort(this, format);
-            },
-            MMMM : function (format) {
-                return this.localeData().months(this, format);
-            },
-            D    : function () {
-                return this.date();
-            },
-            DDD  : function () {
-                return this.dayOfYear();
-            },
-            d    : function () {
-                return this.day();
-            },
-            dd   : function (format) {
-                return this.localeData().weekdaysMin(this, format);
-            },
-            ddd  : function (format) {
-                return this.localeData().weekdaysShort(this, format);
-            },
-            dddd : function (format) {
-                return this.localeData().weekdays(this, format);
-            },
-            w    : function () {
-                return this.week();
-            },
-            W    : function () {
-                return this.isoWeek();
-            },
-            YY   : function () {
-                return leftZeroFill(this.year() % 100, 2);
-            },
-            YYYY : function () {
-                return leftZeroFill(this.year(), 4);
-            },
-            YYYYY : function () {
-                return leftZeroFill(this.year(), 5);
-            },
-            YYYYYY : function () {
-                var y = this.year(), sign = y >= 0 ? '+' : '-';
-                return sign + leftZeroFill(Math.abs(y), 6);
-            },
-            gg   : function () {
-                return leftZeroFill(this.weekYear() % 100, 2);
-            },
-            gggg : function () {
-                return leftZeroFill(this.weekYear(), 4);
-            },
-            ggggg : function () {
-                return leftZeroFill(this.weekYear(), 5);
-            },
-            GG   : function () {
-                return leftZeroFill(this.isoWeekYear() % 100, 2);
-            },
-            GGGG : function () {
-                return leftZeroFill(this.isoWeekYear(), 4);
-            },
-            GGGGG : function () {
-                return leftZeroFill(this.isoWeekYear(), 5);
-            },
-            e : function () {
-                return this.weekday();
-            },
-            E : function () {
-                return this.isoWeekday();
-            },
-            a    : function () {
-                return this.localeData().meridiem(this.hours(), this.minutes(), true);
-            },
-            A    : function () {
-                return this.localeData().meridiem(this.hours(), this.minutes(), false);
-            },
-            H    : function () {
-                return this.hours();
-            },
-            h    : function () {
-                return this.hours() % 12 || 12;
-            },
-            m    : function () {
-                return this.minutes();
-            },
-            s    : function () {
-                return this.seconds();
-            },
-            S    : function () {
-                return toInt(this.milliseconds() / 100);
-            },
-            SS   : function () {
-                return leftZeroFill(toInt(this.milliseconds() / 10), 2);
-            },
-            SSS  : function () {
-                return leftZeroFill(this.milliseconds(), 3);
-            },
-            SSSS : function () {
-                return leftZeroFill(this.milliseconds(), 3);
-            },
-            Z    : function () {
-                var a = this.utcOffset(),
-                    b = '+';
-                if (a < 0) {
-                    a = -a;
-                    b = '-';
-                }
-                return b + leftZeroFill(toInt(a / 60), 2) + ':' + leftZeroFill(toInt(a) % 60, 2);
-            },
-            ZZ   : function () {
-                var a = this.utcOffset(),
-                    b = '+';
-                if (a < 0) {
-                    a = -a;
-                    b = '-';
+    function isObjectEmpty(obj) {
+        if (Object.getOwnPropertyNames) {
+            return Object.getOwnPropertyNames(obj).length === 0;
+        } else {
+            var k;
+            for (k in obj) {
+                if (hasOwnProp(obj, k)) {
+                    return false;
                 }
-                return b + leftZeroFill(toInt(a / 60), 2) + leftZeroFill(toInt(a) % 60, 2);
-            },
-            z : function () {
-                return this.zoneAbbr();
-            },
-            zz : function () {
-                return this.zoneName();
-            },
-            x    : function () {
-                return this.valueOf();
-            },
-            X    : function () {
-                return this.unix();
-            },
-            Q : function () {
-                return this.quarter();
             }
-        },
-
-        deprecations = {},
-
-        lists = ['months', 'monthsShort', 'weekdays', 'weekdaysShort', 'weekdaysMin'],
-
-        updateInProgress = false;
-
-    // Pick the first defined of two or three arguments. dfl comes from
-    // default.
-    function dfl(a, b, c) {
-        switch (arguments.length) {
-            case 2: return a != null ? a : b;
-            case 3: return a != null ? a : b != null ? b : c;
-            default: throw new Error('Implement me');
+            return true;
         }
     }
 
-    function hasOwnProp(a, b) {
-        return hasOwnProperty.call(a, b);
-    }
-
-    function defaultParsingFlags() {
-        // We need to deep clone this object, and es5 standard is not very
-        // helpful.
-        return {
-            empty : false,
-            unusedTokens : [],
-            unusedInput : [],
-            overflow : -2,
-            charsLeftOver : 0,
-            nullInput : false,
-            invalidMonth : null,
-            invalidFormat : false,
-            userInvalidated : false,
-            iso: false
-        };
+    function isUndefined(input) {
+        return input === void 0;
     }
 
-    function printMsg(msg) {
-        if (moment.suppressDeprecationWarnings === false &&
-                typeof console !== 'undefined' && console.warn) {
-            console.warn('Deprecation warning: ' + msg);
-        }
+    function isNumber(input) {
+        return (
+            typeof input === 'number' ||
+            Object.prototype.toString.call(input) === '[object Number]'
+        );
     }
 
-    function deprecate(msg, fn) {
-        var firstTime = true;
-        return extend(function () {
-            if (firstTime) {
-                printMsg(msg);
-                firstTime = false;
-            }
-            return fn.apply(this, arguments);
-        }, fn);
+    function isDate(input) {
+        return (
+            input instanceof Date ||
+            Object.prototype.toString.call(input) === '[object Date]'
+        );
     }
 
-    function deprecateSimple(name, msg) {
-        if (!deprecations[name]) {
-            printMsg(msg);
-            deprecations[name] = true;
+    function map(arr, fn) {
+        var res = [],
+            i,
+            arrLen = arr.length;
+        for (i = 0; i < arrLen; ++i) {
+            res.push(fn(arr[i], i));
         }
+        return res;
     }
 
-    function padToken(func, count) {
-        return function (a) {
-            return leftZeroFill(func.call(this, a), count);
-        };
-    }
-    function ordinalizeToken(func, period) {
-        return function (a) {
-            return this.localeData().ordinal(func.call(this, a), period);
-        };
-    }
-
-    function monthDiff(a, b) {
-        // difference in months
-        var wholeMonthDiff = ((b.year() - a.year()) * 12) + (b.month() - a.month()),
-            // b is in (anchor - 1 month, anchor + 1 month)
-            anchor = a.clone().add(wholeMonthDiff, 'months'),
-            anchor2, adjust;
+    function extend(a, b) {
+        for (var i in b) {
+            if (hasOwnProp(b, i)) {
+                a[i] = b[i];
+            }
+        }
 
-        if (b - anchor < 0) {
-            anchor2 = a.clone().add(wholeMonthDiff - 1, 'months');
-            // linear across the month
-            adjust = (b - anchor) / (anchor - anchor2);
-        } else {
-            anchor2 = a.clone().add(wholeMonthDiff + 1, 'months');
-            // linear across the month
-            adjust = (b - anchor) / (anchor2 - anchor);
+        if (hasOwnProp(b, 'toString')) {
+            a.toString = b.toString;
         }
 
-        return -(wholeMonthDiff + adjust);
-    }
+        if (hasOwnProp(b, 'valueOf')) {
+            a.valueOf = b.valueOf;
+        }
 
-    while (ordinalizeTokens.length) {
-        i = ordinalizeTokens.pop();
-        formatTokenFunctions[i + 'o'] = ordinalizeToken(formatTokenFunctions[i], i);
-    }
-    while (paddedTokens.length) {
-        i = paddedTokens.pop();
-        formatTokenFunctions[i + i] = padToken(formatTokenFunctions[i], 2);
+        return a;
     }
-    formatTokenFunctions.DDDD = padToken(formatTokenFunctions.DDD, 3);
-
-
-    function meridiemFixWrap(locale, hour, meridiem) {
-        var isPm;
 
-        if (meridiem == null) {
-            // nothing to do
-            return hour;
-        }
-        if (locale.meridiemHour != null) {
-            return locale.meridiemHour(hour, meridiem);
-        } else if (locale.isPM != null) {
-            // Fallback
-            isPm = locale.isPM(meridiem);
-            if (isPm && hour < 12) {
-                hour += 12;
-            }
-            if (!isPm && hour === 12) {
-                hour = 0;
-            }
-            return hour;
-        } else {
-            // thie is not supposed to happen
-            return hour;
-        }
+    function createUTC(input, format, locale, strict) {
+        return createLocalOrUTC(input, format, locale, strict, true).utc();
     }
 
-    /************************************
-        Constructors
-    ************************************/
-
-    function Locale() {
+    function defaultParsingFlags() {
+        // We need to deep clone this object.
+        return {
+            empty: false,
+            unusedTokens: [],
+            unusedInput: [],
+            overflow: -2,
+            charsLeftOver: 0,
+            nullInput: false,
+            invalidEra: null,
+            invalidMonth: null,
+            invalidFormat: false,
+            userInvalidated: false,
+            iso: false,
+            parsedDateParts: [],
+            era: null,
+            meridiem: null,
+            rfc2822: false,
+            weekdayMismatch: false,
+        };
     }
 
-    // Moment prototype object
-    function Moment(config, skipOverflow) {
-        if (skipOverflow !== false) {
-            checkOverflow(config);
-        }
-        copyConfig(this, config);
-        this._d = new Date(+config._d);
-        // Prevent infinite loop in case updateOffset creates new moment
-        // objects.
-        if (updateInProgress === false) {
-            updateInProgress = true;
-            moment.updateOffset(this);
-            updateInProgress = false;
+    function getParsingFlags(m) {
+        if (m._pf == null) {
+            m._pf = defaultParsingFlags();
         }
+        return m._pf;
     }
 
-    // Duration Constructor
-    function Duration(duration) {
-        var normalizedInput = normalizeObjectUnits(duration),
-            years = normalizedInput.year || 0,
-            quarters = normalizedInput.quarter || 0,
-            months = normalizedInput.month || 0,
-            weeks = normalizedInput.week || 0,
-            days = normalizedInput.day || 0,
-            hours = normalizedInput.hour || 0,
-            minutes = normalizedInput.minute || 0,
-            seconds = normalizedInput.second || 0,
-            milliseconds = normalizedInput.millisecond || 0;
-
-        // representation for dateAddRemove
-        this._milliseconds = +milliseconds +
-            seconds * 1e3 + // 1000
-            minutes * 6e4 + // 1000 * 60
-            hours * 36e5; // 1000 * 60 * 60
-        // Because of dateAddRemove treats 24 hours as different from a
-        // day when working around DST, we need to store them separately
-        this._days = +days +
-            weeks * 7;
-        // It is impossible translate months into days without knowing
-        // which months you are are talking about, so we have to store
-        // it separately.
-        this._months = +months +
-            quarters * 3 +
-            years * 12;
-
-        this._data = {};
-
-        this._locale = moment.localeData();
+    var some;
+    if (Array.prototype.some) {
+        some = Array.prototype.some;
+    } else {
+        some = function (fun) {
+            var t = Object(this),
+                len = t.length >>> 0,
+                i;
+
+            for (i = 0; i < len; i++) {
+                if (i in t && fun.call(this, t[i], i, t)) {
+                    return true;
+                }
+            }
 
-        this._bubble();
+            return false;
+        };
     }
 
-    /************************************
-        Helpers
-    ************************************/
-
+    function isValid(m) {
+        if (m._isValid == null) {
+            var flags = getParsingFlags(m),
+                parsedParts = some.call(flags.parsedDateParts, function (i) {
+                    return i != null;
+                }),
+                isNowValid =
+                    !isNaN(m._d.getTime()) &&
+                    flags.overflow < 0 &&
+                    !flags.empty &&
+                    !flags.invalidEra &&
+                    !flags.invalidMonth &&
+                    !flags.invalidWeekday &&
+                    !flags.weekdayMismatch &&
+                    !flags.nullInput &&
+                    !flags.invalidFormat &&
+                    !flags.userInvalidated &&
+                    (!flags.meridiem || (flags.meridiem && parsedParts));
 
-    function extend(a, b) {
-        for (var i in b) {
-            if (hasOwnProp(b, i)) {
-                a[i] = b[i];
+            if (m._strict) {
+                isNowValid =
+                    isNowValid &&
+                    flags.charsLeftOver === 0 &&
+                    flags.unusedTokens.length === 0 &&
+                    flags.bigHour === undefined;
             }
-        }
 
-        if (hasOwnProp(b, 'toString')) {
-            a.toString = b.toString;
+            if (Object.isFrozen == null || !Object.isFrozen(m)) {
+                m._isValid = isNowValid;
+            } else {
+                return isNowValid;
+            }
         }
+        return m._isValid;
+    }
 
-        if (hasOwnProp(b, 'valueOf')) {
-            a.valueOf = b.valueOf;
+    function createInvalid(flags) {
+        var m = createUTC(NaN);
+        if (flags != null) {
+            extend(getParsingFlags(m), flags);
+        } else {
+            getParsingFlags(m).userInvalidated = true;
         }
 
-        return a;
+        return m;
     }
 
+    // Plugins that add properties should also add the key here (null value),
+    // so we can properly clone ourselves.
+    var momentProperties = (hooks.momentProperties = []),
+        updateInProgress = false;
+
     function copyConfig(to, from) {
-        var i, prop, val;
+        var i,
+            prop,
+            val,
+            momentPropertiesLen = momentProperties.length;
 
-        if (typeof from._isAMomentObject !== 'undefined') {
+        if (!isUndefined(from._isAMomentObject)) {
             to._isAMomentObject = from._isAMomentObject;
         }
-        if (typeof from._i !== 'undefined') {
+        if (!isUndefined(from._i)) {
             to._i = from._i;
         }
-        if (typeof from._f !== 'undefined') {
+        if (!isUndefined(from._f)) {
             to._f = from._f;
         }
-        if (typeof from._l !== 'undefined') {
+        if (!isUndefined(from._l)) {
             to._l = from._l;
         }
-        if (typeof from._strict !== 'undefined') {
+        if (!isUndefined(from._strict)) {
             to._strict = from._strict;
         }
-        if (typeof from._tzm !== 'undefined') {
+        if (!isUndefined(from._tzm)) {
             to._tzm = from._tzm;
         }
-        if (typeof from._isUTC !== 'undefined') {
+        if (!isUndefined(from._isUTC)) {
             to._isUTC = from._isUTC;
         }
-        if (typeof from._offset !== 'undefined') {
+        if (!isUndefined(from._offset)) {
             to._offset = from._offset;
         }
-        if (typeof from._pf !== 'undefined') {
-            to._pf = from._pf;
+        if (!isUndefined(from._pf)) {
+            to._pf = getParsingFlags(from);
         }
-        if (typeof from._locale !== 'undefined') {
+        if (!isUndefined(from._locale)) {
             to._locale = from._locale;
         }
 
-        if (momentProperties.length > 0) {
-            for (i in momentProperties) {
+        if (momentPropertiesLen > 0) {
+            for (i = 0; i < momentPropertiesLen; i++) {
                 prop = momentProperties[i];
                 val = from[prop];
-                if (typeof val !== 'undefined') {
+                if (!isUndefined(val)) {
                     to[prop] = val;
                 }
             }
         return to;
     }
 
-    function absRound(number) {
-        if (number < 0) {
-            return Math.ceil(number);
-        } else {
-            return Math.floor(number);
+    // Moment prototype object
+    function Moment(config) {
+        copyConfig(this, config);
+        this._d = new Date(config._d != null ? config._d.getTime() : NaN);
+        if (!this.isValid()) {
+            this._d = new Date(NaN);
         }
-    }
-
-    // left zero fill a number
-    // see http://jsperf.com/left-zero-filling for performance comparison
-    function leftZeroFill(number, targetLength, forceSign) {
-        var output = '' + Math.abs(number),
-            sign = number >= 0;
-
-        while (output.length < targetLength) {
-            output = '0' + output;
+        // Prevent infinite loop in case updateOffset creates new moment
+        // objects.
+        if (updateInProgress === false) {
+            updateInProgress = true;
+            hooks.updateOffset(this);
+            updateInProgress = false;
         }
-        return (sign ? (forceSign ? '+' : '') : '-') + output;
     }
 
-    function positiveMomentsDifference(base, other) {
-        var res = {milliseconds: 0, months: 0};
+    function isMoment(obj) {
+        return (
+            obj instanceof Moment || (obj != null && obj._isAMomentObject != null)
+        );
+    }
 
-        res.months = other.month() - base.month() +
-            (other.year() - base.year()) * 12;
-        if (base.clone().add(res.months, 'M').isAfter(other)) {
-            --res.months;
+    function warn(msg) {
+        if (
+            hooks.suppressDeprecationWarnings === false &&
+            typeof console !== 'undefined' &&
+            console.warn
+        ) {
+            console.warn('Deprecation warning: ' + msg);
         }
-
-        res.milliseconds = +other - +(base.clone().add(res.months, 'M'));
-
-        return res;
     }
 
-    function momentsDifference(base, other) {
-        var res;
-        other = makeAs(other, base);
-        if (base.isBefore(other)) {
-            res = positiveMomentsDifference(base, other);
-        } else {
-            res = positiveMomentsDifference(other, base);
-            res.milliseconds = -res.milliseconds;
-            res.months = -res.months;
-        }
-
-        return res;
-    }
+    function deprecate(msg, fn) {
+        var firstTime = true;
 
-    // TODO: remove 'name' arg after deprecation is removed
-    function createAdder(direction, name) {
-        return function (val, period) {
-            var dur, tmp;
-            //invert the arguments, but complain about it
-            if (period !== null && !isNaN(+period)) {
-                deprecateSimple(name, 'moment().' + name  + '(period, number) is deprecated. Please use moment().' + name + '(number, period).');
-                tmp = val; val = period; period = tmp;
+        return extend(function () {
+            if (hooks.deprecationHandler != null) {
+                hooks.deprecationHandler(null, msg);
             }
-
-            val = typeof val === 'string' ? +val : val;
-            dur = moment.duration(val, period);
-            addOrSubtractDurationFromMoment(this, dur, direction);
-            return this;
-        };
+            if (firstTime) {
+                var args = [],
+                    arg,
+                    i,
+                    key,
+                    argLen = arguments.length;
+                for (i = 0; i < argLen; i++) {
+                    arg = '';
+                    if (typeof arguments[i] === 'object') {
+                        arg += '\n[' + i + '] ';
+                        for (key in arguments[0]) {
+                            if (hasOwnProp(arguments[0], key)) {
+                                arg += key + ': ' + arguments[0][key] + ', ';
+                            }
+                        }
+                        arg = arg.slice(0, -2); // Remove trailing comma and space
+                    } else {
+                        arg = arguments[i];
+                    }
+                    args.push(arg);
+                }
+                warn(
+                    msg +
+                        '\nArguments: ' +
+                        Array.prototype.slice.call(args).join('') +
+                        '\n' +
+                        new Error().stack
+                );
+                firstTime = false;
+            }
+            return fn.apply(this, arguments);
+        }, fn);
     }
 
-    function addOrSubtractDurationFromMoment(mom, duration, isAdding, updateOffset) {
-        var milliseconds = duration._milliseconds,
-            days = duration._days,
-            months = duration._months;
-        updateOffset = updateOffset == null ? true : updateOffset;
+    var deprecations = {};
 
-        if (milliseconds) {
-            mom._d.setTime(+mom._d + milliseconds * isAdding);
-        }
-        if (days) {
-            rawSetter(mom, 'Date', rawGetter(mom, 'Date') + days * isAdding);
-        }
-        if (months) {
-            rawMonthSetter(mom, rawGetter(mom, 'Month') + months * isAdding);
+    function deprecateSimple(name, msg) {
+        if (hooks.deprecationHandler != null) {
+            hooks.deprecationHandler(name, msg);
         }
-        if (updateOffset) {
-            moment.updateOffset(mom, days || months);
+        if (!deprecations[name]) {
+            warn(msg);
+            deprecations[name] = true;
         }
     }
 
-    // check if is an array
-    function isArray(input) {
-        return Object.prototype.toString.call(input) === '[object Array]';
-    }
+    hooks.suppressDeprecationWarnings = false;
+    hooks.deprecationHandler = null;
 
-    function isDate(input) {
-        return Object.prototype.toString.call(input) === '[object Date]' ||
-            input instanceof Date;
+    function isFunction(input) {
+        return (
+            (typeof Function !== 'undefined' && input instanceof Function) ||
+            Object.prototype.toString.call(input) === '[object Function]'
+        );
     }
 
-    // compare two arrays, return the number of differences
-    function compareArrays(array1, array2, dontConvert) {
-        var len = Math.min(array1.length, array2.length),
-            lengthDiff = Math.abs(array1.length - array2.length),
-            diffs = 0,
-            i;
-        for (i = 0; i < len; i++) {
-            if ((dontConvert && array1[i] !== array2[i]) ||
-                (!dontConvert && toInt(array1[i]) !== toInt(array2[i]))) {
-                diffs++;
+    function set(config) {
+        var prop, i;
+        for (i in config) {
+            if (hasOwnProp(config, i)) {
+                prop = config[i];
+                if (isFunction(prop)) {
+                    this[i] = prop;
+                } else {
+                    this['_' + i] = prop;
+                }
             }
         }
-        return diffs + lengthDiff;
-    }
-
-    function normalizeUnits(units) {
-        if (units) {
-            var lowered = units.toLowerCase().replace(/(.)s$/, '$1');
-            units = unitAliases[units] || camelFunctions[lowered] || lowered;
-        }
-        return units;
+        this._config = config;
+        // Lenient ordinal parsing accepts just a number in addition to
+        // number + (possibly) stuff coming from _dayOfMonthOrdinalParse.
+        // TODO: Remove "ordinalParse" fallback in next major release.
+        this._dayOfMonthOrdinalParseLenient = new RegExp(
+            (this._dayOfMonthOrdinalParse.source || this._ordinalParse.source) +
+                '|' +
+                /\d{1,2}/.source
+        );
     }
 
-    function normalizeObjectUnits(inputObject) {
-        var normalizedInput = {},
-            normalizedProp,
+    function mergeConfigs(parentConfig, childConfig) {
+        var res = extend({}, parentConfig),
             prop;
-
-        for (prop in inputObject) {
-            if (hasOwnProp(inputObject, prop)) {
-                normalizedProp = normalizeUnits(prop);
-                if (normalizedProp) {
-                    normalizedInput[normalizedProp] = inputObject[prop];
+        for (prop in childConfig) {
+            if (hasOwnProp(childConfig, prop)) {
+                if (isObject(parentConfig[prop]) && isObject(childConfig[prop])) {
+                    res[prop] = {};
+                    extend(res[prop], parentConfig[prop]);
+                    extend(res[prop], childConfig[prop]);
+                } else if (childConfig[prop] != null) {
+                    res[prop] = childConfig[prop];
+                } else {
+                    delete res[prop];
                 }
             }
         }
-
-        return normalizedInput;
+        for (prop in parentConfig) {
+            if (
+                hasOwnProp(parentConfig, prop) &&
+                !hasOwnProp(childConfig, prop) &&
+                isObject(parentConfig[prop])
+            ) {
+                // make sure changes to properties don't modify parent config
+                res[prop] = extend({}, res[prop]);
+            }
+        }
+        return res;
     }
 
-    function makeList(field) {
-        var count, setter;
-
-        if (field.indexOf('week') === 0) {
-            count = 7;
-            setter = 'day';
-        }
-        else if (field.indexOf('month') === 0) {
-            count = 12;
-            setter = 'month';
-        }
-        else {
-            return;
+    function Locale(config) {
+        if (config != null) {
+            this.set(config);
         }
+    }
 
-        moment[field] = function (format, index) {
-            var i, getter,
-                method = moment._locale[field],
-                results = [];
-
-            if (typeof format === 'number') {
-                index = format;
-                format = undefined;
-            }
-
-            getter = function (i) {
-                var m = moment().utc().set(setter, i);
-                return method.call(moment._locale, m, format || '');
-            };
+    var keys;
 
-            if (index != null) {
-                return getter(index);
-            }
-            else {
-                for (i = 0; i < count; i++) {
-                    results.push(getter(i));
+    if (Object.keys) {
+        keys = Object.keys;
+    } else {
+        keys = function (obj) {
+            var i,
+                res = [];
+            for (i in obj) {
+                if (hasOwnProp(obj, i)) {
+                    res.push(i);
                 }
-                return results;
             }
+            return res;
         };
     }
 
-    function toInt(argumentForCoercion) {
-        var coercedNumber = +argumentForCoercion,
-            value = 0;
-
-        if (coercedNumber !== 0 && isFinite(coercedNumber)) {
-            if (coercedNumber >= 0) {
-                value = Math.floor(coercedNumber);
-            } else {
-                value = Math.ceil(coercedNumber);
-            }
-        }
-
-        return value;
-    }
-
-    function daysInMonth(year, month) {
-        return new Date(Date.UTC(year, month + 1, 0)).getUTCDate();
-    }
-
-    function weeksInYear(year, dow, doy) {
-        return weekOfYear(moment([year, 11, 31 + dow - doy]), dow, doy).week;
-    }
-
-    function daysInYear(year) {
-        return isLeapYear(year) ? 366 : 365;
-    }
+    var defaultCalendar = {
+        sameDay: '[Today at] LT',
+        nextDay: '[Tomorrow at] LT',
+        nextWeek: 'dddd [at] LT',
+        lastDay: '[Yesterday at] LT',
+        lastWeek: '[Last] dddd [at] LT',
+        sameElse: 'L',
+    };
 
-    function isLeapYear(year) {
-        return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
+    function calendar(key, mom, now) {
+        var output = this._calendar[key] || this._calendar['sameElse'];
+        return isFunction(output) ? output.call(mom, now) : output;
     }
 
-    function checkOverflow(m) {
-        var overflow;
-        if (m._a && m._pf.overflow === -2) {
-            overflow =
-                m._a[MONTH] < 0 || m._a[MONTH] > 11 ? MONTH :
-                m._a[DATE] < 1 || m._a[DATE] > daysInMonth(m._a[YEAR], m._a[MONTH]) ? DATE :
-                m._a[HOUR] < 0 || m._a[HOUR] > 24 ||
-                    (m._a[HOUR] === 24 && (m._a[MINUTE] !== 0 ||
-                                           m._a[SECOND] !== 0 ||
-                                           m._a[MILLISECOND] !== 0)) ? HOUR :
-                m._a[MINUTE] < 0 || m._a[MINUTE] > 59 ? MINUTE :
-                m._a[SECOND] < 0 || m._a[SECOND] > 59 ? SECOND :
-                m._a[MILLISECOND] < 0 || m._a[MILLISECOND] > 999 ? MILLISECOND :
-                -1;
-
-            if (m._pf._overflowDayOfYear && (overflow < YEAR || overflow > DATE)) {
-                overflow = DATE;
-            }
-
-            m._pf.overflow = overflow;
-        }
+    function zeroFill(number, targetLength, forceSign) {
+        var absNumber = '' + Math.abs(number),
+            zerosToFill = targetLength - absNumber.length,
+            sign = number >= 0;
+        return (
+            (sign ? (forceSign ? '+' : '') : '-') +
+            Math.pow(10, Math.max(0, zerosToFill)).toString().substr(1) +
+            absNumber
+        );
     }
 
-    function isValid(m) {
-        if (m._isValid == null) {
-            m._isValid = !isNaN(m._d.getTime()) &&
-                m._pf.overflow < 0 &&
-                !m._pf.empty &&
-                !m._pf.invalidMonth &&
-                !m._pf.nullInput &&
-                !m._pf.invalidFormat &&
-                !m._pf.userInvalidated;
-
-            if (m._strict) {
-                m._isValid = m._isValid &&
-                    m._pf.charsLeftOver === 0 &&
-                    m._pf.unusedTokens.length === 0 &&
-                    m._pf.bigHour === undefined;
-            }
+    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,
+        localFormattingTokens = /(\[[^\[]*\])|(\\)?(LTS|LT|LL?L?L?|l{1,4})/g,
+        formatFunctions = {},
+        formatTokenFunctions = {};
+
+    // token:    'M'
+    // padded:   ['MM', 2]
+    // ordinal:  'Mo'
+    // callback: function () { this.month() + 1 }
+    function addFormatToken(token, padded, ordinal, callback) {
+        var func = callback;
+        if (typeof callback === 'string') {
+            func = function () {
+                return this[callback]();
+            };
         }
-        return m._isValid;
-    }
-
-    function normalizeLocale(key) {
-        return key ? key.toLowerCase().replace('_', '-') : key;
-    }
-
-    // pick the locale from the array
-    // try ['en-au', 'en-gb'] as 'en-au', 'en-gb', 'en', as in move through the list trying each
-    // substring from most specific to least, but move to the next array item if it's a more specific variant than the current root
-    function chooseLocale(names) {
-        var i = 0, j, next, locale, split;
-
-        while (i < names.length) {
-            split = normalizeLocale(names[i]).split('-');
-            j = split.length;
-            next = normalizeLocale(names[i + 1]);
-            next = next ? next.split('-') : null;
-            while (j > 0) {
-                locale = loadLocale(split.slice(0, j).join('-'));
-                if (locale) {
-                    return locale;
-                }
-                if (next && next.length >= j && compareArrays(split, next, true) >= j - 1) {
-                    //the next array item is better than a shallower substring of this one
-                    break;
-                }
-                j--;
-            }
-            i++;
+        if (token) {
+            formatTokenFunctions[token] = func;
         }
-        return null;
-    }
-
-    function loadLocale(name) {
-        var oldLocale = null;
-        if (!locales[name] && hasModule) {
-            try {
-                oldLocale = moment.locale();
-                require('./locale/' + name);
-                // because defineLocale currently also sets the global locale, we want to undo that for lazy loaded locales
-                moment.locale(oldLocale);
-            } catch (e) { }
+        if (padded) {
+            formatTokenFunctions[padded[0]] = function () {
+                return zeroFill(func.apply(this, arguments), padded[1], padded[2]);
+            };
         }
-        return locales[name];
-    }
-
-    // Return a moment from input, that is local/utc/utcOffset equivalent to
-    // model.
-    function makeAs(input, model) {
-        var res, diff;
-        if (model._isUTC) {
-            res = model.clone();
-            diff = (moment.isMoment(input) || isDate(input) ?
-                    +input : +moment(input)) - (+res);
-            // Use low-level api, because this fn is low-level api.
-            res._d.setTime(+res._d + diff);
-            moment.updateOffset(res, false);
-            return res;
-        } else {
-            return moment(input).local();
+        if (ordinal) {
+            formatTokenFunctions[ordinal] = function () {
+                return this.localeData().ordinal(
+                    func.apply(this, arguments),
+                    token
+                );
+            };
         }
     }
 
-    /************************************
-        Locale
-    ************************************/
-
-
-    extend(Locale.prototype, {
-
-        set : function (config) {
-            var prop, i;
-            for (i in config) {
-                prop = config[i];
-                if (typeof prop === 'function') {
-                    this[i] = prop;
-                } else {
-                    this['_' + i] = prop;
-                }
-            }
-            // Lenient ordinal parsing accepts just a number in addition to
-            // number + (possibly) stuff coming from _ordinalParseLenient.
-            this._ordinalParseLenient = new RegExp(this._ordinalParse.source + '|' + /\d{1,2}/.source);
-        },
-
-        _months : 'January_February_March_April_May_June_July_August_September_October_November_December'.split('_'),
-        months : function (m) {
-            return this._months[m.month()];
-        },
-
-        _monthsShort : 'Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec'.split('_'),
-        monthsShort : function (m) {
-            return this._monthsShort[m.month()];
-        },
-
-        monthsParse : function (monthName, format, strict) {
-            var i, mom, regex;
-
-            if (!this._monthsParse) {
-                this._monthsParse = [];
-                this._longMonthsParse = [];
-                this._shortMonthsParse = [];
-            }
-
-            for (i = 0; i < 12; i++) {
-                // make the regex if we don't have it already
-                mom = moment.utc([2000, i]);
-                if (strict && !this._longMonthsParse[i]) {
-                    this._longMonthsParse[i] = new RegExp('^' + this.months(mom, '').replace('.', '') + '$', 'i');
-                    this._shortMonthsParse[i] = new RegExp('^' + this.monthsShort(mom, '').replace('.', '') + '$', 'i');
-                }
-                if (!strict && !this._monthsParse[i]) {
-                    regex = '^' + this.months(mom, '') + '|^' + this.monthsShort(mom, '');
-                    this._monthsParse[i] = new RegExp(regex.replace('.', ''), 'i');
-                }
-                // test the regex
-                if (strict && format === 'MMMM' && this._longMonthsParse[i].test(monthName)) {
-                    return i;
-                } else if (strict && format === 'MMM' && this._shortMonthsParse[i].test(monthName)) {
-                    return i;
-                } else if (!strict && this._monthsParse[i].test(monthName)) {
-                    return i;
-                }
-            }
-        },
-
-        _weekdays : 'Sunday_Monday_Tuesday_Wednesday_Thursday_Friday_Saturday'.split('_'),
-        weekdays : function (m) {
-            return this._weekdays[m.day()];
-        },
-
-        _weekdaysShort : 'Sun_Mon_Tue_Wed_Thu_Fri_Sat'.split('_'),
-        weekdaysShort : function (m) {
-            return this._weekdaysShort[m.day()];
-        },
-
-        _weekdaysMin : 'Su_Mo_Tu_We_Th_Fr_Sa'.split('_'),
-        weekdaysMin : function (m) {
-            return this._weekdaysMin[m.day()];
-        },
-
-        weekdaysParse : function (weekdayName) {
-            var i, mom, regex;
-
-            if (!this._weekdaysParse) {
-                this._weekdaysParse = [];
-            }
-
-            for (i = 0; i < 7; i++) {
-                // make the regex if we don't have it already
-                if (!this._weekdaysParse[i]) {
-                    mom = moment([2000, 1]).day(i);
-                    regex = '^' + this.weekdays(mom, '') + '|^' + this.weekdaysShort(mom, '') + '|^' + this.weekdaysMin(mom, '');
-                    this._weekdaysParse[i] = new RegExp(regex.replace('.', ''), 'i');
-                }
-                // test the regex
-                if (this._weekdaysParse[i].test(weekdayName)) {
-                    return i;
-                }
-            }
-        },
-
-        _longDateFormat : {
-            LTS : 'h:mm:ss A',
-            LT : 'h:mm A',
-            L : 'MM/DD/YYYY',
-            LL : 'MMMM D, YYYY',
-            LLL : 'MMMM D, YYYY LT',
-            LLLL : 'dddd, MMMM D, YYYY LT'
-        },
-        longDateFormat : function (key) {
-            var output = this._longDateFormat[key];
-            if (!output && this._longDateFormat[key.toUpperCase()]) {
-                output = this._longDateFormat[key.toUpperCase()].replace(/MMMM|MM|DD|dddd/g, function (val) {
-                    return val.slice(1);
-                });
-                this._longDateFormat[key] = output;
-            }
-            return output;
-        },
-
-        isPM : function (input) {
-            // IE8 Quirks Mode & IE7 Standards Mode do not allow accessing strings like arrays
-            // Using charAt should be more compatible.
-            return ((input + '').toLowerCase().charAt(0) === 'p');
-        },
-
-        _meridiemParse : /[ap]\.?m?\.?/i,
-        meridiem : function (hours, minutes, isLower) {
-            if (hours > 11) {
-                return isLower ? 'pm' : 'PM';
-            } else {
-                return isLower ? 'am' : 'AM';
-            }
-        },
-
-
-        _calendar : {
-            sameDay : '[Today at] LT',
-            nextDay : '[Tomorrow at] LT',
-            nextWeek : 'dddd [at] LT',
-            lastDay : '[Yesterday at] LT',
-            lastWeek : '[Last] dddd [at] LT',
-            sameElse : 'L'
-        },
-        calendar : function (key, mom, now) {
-            var output = this._calendar[key];
-            return typeof output === 'function' ? output.apply(mom, [now]) : output;
-        },
-
-        _relativeTime : {
-            future : 'in %s',
-            past : '%s ago',
-            s : 'a few seconds',
-            m : 'a minute',
-            mm : '%d minutes',
-            h : 'an hour',
-            hh : '%d hours',
-            d : 'a day',
-            dd : '%d days',
-            M : 'a month',
-            MM : '%d months',
-            y : 'a year',
-            yy : '%d years'
-        },
-
-        relativeTime : function (number, withoutSuffix, string, isFuture) {
-            var output = this._relativeTime[string];
-            return (typeof output === 'function') ?
-                output(number, withoutSuffix, string, isFuture) :
-                output.replace(/%d/i, number);
-        },
-
-        pastFuture : function (diff, output) {
-            var format = this._relativeTime[diff > 0 ? 'future' : 'past'];
-            return typeof format === 'function' ? format(output) : format.replace(/%s/i, output);
-        },
-
-        ordinal : function (number) {
-            return this._ordinal.replace('%d', number);
-        },
-        _ordinal : '%d',
-        _ordinalParse : /\d{1,2}/,
-
-        preparse : function (string) {
-            return string;
-        },
-
-        postformat : function (string) {
-            return string;
-        },
-
-        week : function (mom) {
-            return weekOfYear(mom, this._week.dow, this._week.doy).week;
-        },
-
-        _week : {
-            dow : 0, // Sunday is the first day of the week.
-            doy : 6  // The week that contains Jan 1st is the first week of the year.
-        },
-
-        firstDayOfWeek : function () {
-            return this._week.dow;
-        },
-
-        firstDayOfYear : function () {
-            return this._week.doy;
-        },
-
-        _invalidDate: 'Invalid date',
-        invalidDate: function () {
-            return this._invalidDate;
-        }
-    });
-
-    /************************************
-        Formatting
-    ************************************/
-
-
     function removeFormattingTokens(input) {
         if (input.match(/\[[\s\S]/)) {
             return input.replace(/^\[|\]$/g, '');
     }
 
     function makeFormatFunction(format) {
-        var array = format.match(formattingTokens), i, length;
+        var array = format.match(formattingTokens),
+            i,
+            length;
 
         for (i = 0, length = array.length; i < length; i++) {
             if (formatTokenFunctions[array[i]]) {
         }
 
         return function (mom) {
-            var output = '';
+            var output = '',
+                i;
             for (i = 0; i < length; i++) {
-                output += array[i] instanceof Function ? array[i].call(mom, format) : array[i];
+                output += isFunction(array[i])
+                    ? array[i].call(mom, format)
+                    : array[i];
             }
             return output;
         };
         }
 
         format = expandFormat(format, m.localeData());
-
-        if (!formatFunctions[format]) {
-            formatFunctions[format] = makeFormatFunction(format);
-        }
+        formatFunctions[format] =
+            formatFunctions[format] || makeFormatFunction(format);
 
         return formatFunctions[format](m);
     }
 
         localFormattingTokens.lastIndex = 0;
         while (i >= 0 && localFormattingTokens.test(format)) {
-            format = format.replace(localFormattingTokens, replaceLongDateFormatTokens);
+            format = format.replace(
+                localFormattingTokens,
+                replaceLongDateFormatTokens
+            );
             localFormattingTokens.lastIndex = 0;
             i -= 1;
         }
         return format;
     }
 
+    var defaultLongDateFormat = {
+        LTS: 'h:mm:ss A',
+        LT: 'h:mm A',
+        L: 'MM/DD/YYYY',
+        LL: 'MMMM D, YYYY',
+        LLL: 'MMMM D, YYYY h:mm A',
+        LLLL: 'dddd, MMMM D, YYYY h:mm A',
+    };
 
-    /************************************
-        Parsing
-    ************************************/
+    function longDateFormat(key) {
+        var format = this._longDateFormat[key],
+            formatUpper = this._longDateFormat[key.toUpperCase()];
 
+        if (format || !formatUpper) {
+            return format;
+        }
 
-    // get the regex to find the next token
-    function getParseRegexForToken(token, config) {
-        var a, strict = config._strict;
-        switch (token) {
-        case 'Q':
-            return parseTokenOneDigit;
-        case 'DDDD':
-            return parseTokenThreeDigits;
-        case 'YYYY':
-        case 'GGGG':
-        case 'gggg':
-            return strict ? parseTokenFourDigits : parseTokenOneToFourDigits;
-        case 'Y':
-        case 'G':
-        case 'g':
-            return parseTokenSignedNumber;
-        case 'YYYYYY':
-        case 'YYYYY':
-        case 'GGGGG':
-        case 'ggggg':
-            return strict ? parseTokenSixDigits : parseTokenOneToSixDigits;
-        case 'S':
-            if (strict) {
-                return parseTokenOneDigit;
+        this._longDateFormat[key] = formatUpper
+            .match(formattingTokens)
+            .map(function (tok) {
+                if (
+                    tok === 'MMMM' ||
+                    tok === 'MM' ||
+                    tok === 'DD' ||
+                    tok === 'dddd'
+                ) {
+                    return tok.slice(1);
+                }
+                return tok;
+            })
+            .join('');
+
+        return this._longDateFormat[key];
+    }
+
+    var defaultInvalidDate = 'Invalid date';
+
+    function invalidDate() {
+        return this._invalidDate;
+    }
+
+    var defaultOrdinal = '%d',
+        defaultDayOfMonthOrdinalParse = /\d{1,2}/;
+
+    function ordinal(number) {
+        return this._ordinal.replace('%d', number);
+    }
+
+    var defaultRelativeTime = {
+        future: 'in %s',
+        past: '%s ago',
+        s: 'a few seconds',
+        ss: '%d seconds',
+        m: 'a minute',
+        mm: '%d minutes',
+        h: 'an hour',
+        hh: '%d hours',
+        d: 'a day',
+        dd: '%d days',
+        w: 'a week',
+        ww: '%d weeks',
+        M: 'a month',
+        MM: '%d months',
+        y: 'a year',
+        yy: '%d years',
+    };
+
+    function relativeTime(number, withoutSuffix, string, isFuture) {
+        var output = this._relativeTime[string];
+        return isFunction(output)
+            ? output(number, withoutSuffix, string, isFuture)
+            : output.replace(/%d/i, number);
+    }
+
+    function pastFuture(diff, output) {
+        var format = this._relativeTime[diff > 0 ? 'future' : 'past'];
+        return isFunction(format) ? format(output) : format.replace(/%s/i, output);
+    }
+
+    var aliases = {};
+
+    function addUnitAlias(unit, shorthand) {
+        var lowerCase = unit.toLowerCase();
+        aliases[lowerCase] = aliases[lowerCase + 's'] = aliases[shorthand] = unit;
+    }
+
+    function normalizeUnits(units) {
+        return typeof units === 'string'
+            ? aliases[units] || aliases[units.toLowerCase()]
+            : undefined;
+    }
+
+    function normalizeObjectUnits(inputObject) {
+        var normalizedInput = {},
+            normalizedProp,
+            prop;
+
+        for (prop in inputObject) {
+            if (hasOwnProp(inputObject, prop)) {
+                normalizedProp = normalizeUnits(prop);
+                if (normalizedProp) {
+                    normalizedInput[normalizedProp] = inputObject[prop];
+                }
             }
-            /* falls through */
-        case 'SS':
-            if (strict) {
-                return parseTokenTwoDigits;
+        }
+
+        return normalizedInput;
+    }
+
+    var priorities = {};
+
+    function addUnitPriority(unit, priority) {
+        priorities[unit] = priority;
+    }
+
+    function getPrioritizedUnits(unitsObj) {
+        var units = [],
+            u;
+        for (u in unitsObj) {
+            if (hasOwnProp(unitsObj, u)) {
+                units.push({ unit: u, priority: priorities[u] });
             }
-            /* falls through */
-        case 'SSS':
-            if (strict) {
-                return parseTokenThreeDigits;
-            }
-            /* falls through */
-        case 'DDD':
-            return parseTokenOneToThreeDigits;
-        case 'MMM':
-        case 'MMMM':
-        case 'dd':
-        case 'ddd':
-        case 'dddd':
-            return parseTokenWord;
-        case 'a':
-        case 'A':
-            return config._locale._meridiemParse;
-        case 'x':
-            return parseTokenOffsetMs;
-        case 'X':
-            return parseTokenTimestampMs;
-        case 'Z':
-        case 'ZZ':
-            return parseTokenTimezone;
-        case 'T':
-            return parseTokenT;
-        case 'SSSS':
-            return parseTokenDigits;
-        case 'MM':
-        case 'DD':
-        case 'YY':
-        case 'GG':
-        case 'gg':
-        case 'HH':
-        case 'hh':
-        case 'mm':
-        case 'ss':
-        case 'ww':
-        case 'WW':
-            return strict ? parseTokenTwoDigits : parseTokenOneOrTwoDigits;
-        case 'M':
-        case 'D':
-        case 'd':
-        case 'H':
-        case 'h':
-        case 'm':
-        case 's':
-        case 'w':
-        case 'W':
-        case 'e':
-        case 'E':
-            return parseTokenOneOrTwoDigits;
-        case 'Do':
-            return strict ? config._locale._ordinalParse : config._locale._ordinalParseLenient;
-        default :
-            a = new RegExp(regexpEscape(unescapeFormat(token.replace('\\', '')), 'i'));
-            return a;
         }
+        units.sort(function (a, b) {
+            return a.priority - b.priority;
+        });
+        return units;
     }
 
-    function utcOffsetFromString(string) {
-        string = string || '';
-        var possibleTzMatches = (string.match(parseTokenTimezone) || []),
-            tzChunk = possibleTzMatches[possibleTzMatches.length - 1] || [],
-            parts = (tzChunk + '').match(parseTimezoneChunker) || ['-', 0, 0],
-            minutes = +(parts[1] * 60) + toInt(parts[2]);
+    function isLeapYear(year) {
+        return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
+    }
 
-        return parts[0] === '+' ? minutes : -minutes;
+    function absFloor(number) {
+        if (number < 0) {
+            // -0 -> 0
+            return Math.ceil(number) || 0;
+        } else {
+            return Math.floor(number);
+        }
     }
 
-    // function to convert string input to date
-    function addTimeToArrayFromToken(token, input, config) {
-        var a, datePartArray = config._a;
-
-        switch (token) {
-        // QUARTER
-        case 'Q':
-            if (input != null) {
-                datePartArray[MONTH] = (toInt(input) - 1) * 3;
-            }
-            break;
-        // MONTH
-        case 'M' : // fall through to MM
-        case 'MM' :
-            if (input != null) {
-                datePartArray[MONTH] = toInt(input) - 1;
-            }
-            break;
-        case 'MMM' : // fall through to MMMM
-        case 'MMMM' :
-            a = config._locale.monthsParse(input, token, config._strict);
-            // if we didn't find a month name, mark the date as invalid.
-            if (a != null) {
-                datePartArray[MONTH] = a;
+    function toInt(argumentForCoercion) {
+        var coercedNumber = +argumentForCoercion,
+            value = 0;
+
+        if (coercedNumber !== 0 && isFinite(coercedNumber)) {
+            value = absFloor(coercedNumber);
+        }
+
+        return value;
+    }
+
+    function makeGetSet(unit, keepTime) {
+        return function (value) {
+            if (value != null) {
+                set$1(this, unit, value);
+                hooks.updateOffset(this, keepTime);
+                return this;
             } else {
-                config._pf.invalidMonth = input;
-            }
-            break;
-        // DAY OF MONTH
-        case 'D' : // fall through to DD
-        case 'DD' :
-            if (input != null) {
-                datePartArray[DATE] = toInt(input);
-            }
-            break;
-        case 'Do' :
-            if (input != null) {
-                datePartArray[DATE] = toInt(parseInt(
-                            input.match(/\d{1,2}/)[0], 10));
-            }
-            break;
-        // DAY OF YEAR
-        case 'DDD' : // fall through to DDDD
-        case 'DDDD' :
-            if (input != null) {
-                config._dayOfYear = toInt(input);
-            }
-
-            break;
-        // YEAR
-        case 'YY' :
-            datePartArray[YEAR] = moment.parseTwoDigitYear(input);
-            break;
-        case 'YYYY' :
-        case 'YYYYY' :
-        case 'YYYYYY' :
-            datePartArray[YEAR] = toInt(input);
-            break;
-        // AM / PM
-        case 'a' : // fall through to A
-        case 'A' :
-            config._meridiem = input;
-            // config._isPm = config._locale.isPM(input);
-            break;
-        // HOUR
-        case 'h' : // fall through to hh
-        case 'hh' :
-            config._pf.bigHour = true;
-            /* falls through */
-        case 'H' : // fall through to HH
-        case 'HH' :
-            datePartArray[HOUR] = toInt(input);
-            break;
-        // MINUTE
-        case 'm' : // fall through to mm
-        case 'mm' :
-            datePartArray[MINUTE] = toInt(input);
-            break;
-        // SECOND
-        case 's' : // fall through to ss
-        case 'ss' :
-            datePartArray[SECOND] = toInt(input);
-            break;
-        // MILLISECOND
-        case 'S' :
-        case 'SS' :
-        case 'SSS' :
-        case 'SSSS' :
-            datePartArray[MILLISECOND] = toInt(('0.' + input) * 1000);
-            break;
-        // UNIX OFFSET (MILLISECONDS)
-        case 'x':
-            config._d = new Date(toInt(input));
-            break;
-        // UNIX TIMESTAMP WITH MS
-        case 'X':
-            config._d = new Date(parseFloat(input) * 1000);
-            break;
-        // TIMEZONE
-        case 'Z' : // fall through to ZZ
-        case 'ZZ' :
-            config._useUTC = true;
-            config._tzm = utcOffsetFromString(input);
-            break;
-        // WEEKDAY - human
-        case 'dd':
-        case 'ddd':
-        case 'dddd':
-            a = config._locale.weekdaysParse(input);
-            // if we didn't get a weekday name, mark the date as invalid
-            if (a != null) {
-                config._w = config._w || {};
-                config._w['d'] = a;
+                return get(this, unit);
+            }
+        };
+    }
+
+    function get(mom, unit) {
+        return mom.isValid()
+            ? mom._d['get' + (mom._isUTC ? 'UTC' : '') + unit]()
+            : NaN;
+    }
+
+    function set$1(mom, unit, value) {
+        if (mom.isValid() && !isNaN(value)) {
+            if (
+                unit === 'FullYear' &&
+                isLeapYear(mom.year()) &&
+                mom.month() === 1 &&
+                mom.date() === 29
+            ) {
+                value = toInt(value);
+                mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](
+                    value,
+                    mom.month(),
+                    daysInMonth(value, mom.month())
+                );
             } else {
-                config._pf.invalidWeekday = input;
-            }
-            break;
-        // WEEK, WEEK DAY - numeric
-        case 'w':
-        case 'ww':
-        case 'W':
-        case 'WW':
-        case 'd':
-        case 'e':
-        case 'E':
-            token = token.substr(0, 1);
-            /* falls through */
-        case 'gggg':
-        case 'GGGG':
-        case 'GGGGG':
-            token = token.substr(0, 2);
-            if (input) {
-                config._w = config._w || {};
-                config._w[token] = toInt(input);
-            }
-            break;
-        case 'gg':
-        case 'GG':
-            config._w = config._w || {};
-            config._w[token] = moment.parseTwoDigitYear(input);
+                mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](value);
+            }
         }
     }
 
-    function dayOfYearFromWeekInfo(config) {
-        var w, weekYear, week, weekday, dow, doy, temp;
+    // MOMENTS
 
-        w = config._w;
-        if (w.GG != null || w.W != null || w.E != null) {
-            dow = 1;
-            doy = 4;
+    function stringGet(units) {
+        units = normalizeUnits(units);
+        if (isFunction(this[units])) {
+            return this[units]();
+        }
+        return this;
+    }
 
-            // TODO: We need to take the current isoWeekYear, but that depends on
-            // how we interpret now (local, utc, fixed offset). So create
-            // a now version of current config (take local/utc/offset flags, and
-            // create now).
-            weekYear = dfl(w.GG, config._a[YEAR], weekOfYear(moment(), 1, 4).year);
-            week = dfl(w.W, 1);
-            weekday = dfl(w.E, 1);
+    function stringSet(units, value) {
+        if (typeof units === 'object') {
+            units = normalizeObjectUnits(units);
+            var prioritized = getPrioritizedUnits(units),
+                i,
+                prioritizedLen = prioritized.length;
+            for (i = 0; i < prioritizedLen; i++) {
+                this[prioritized[i].unit](units[prioritized[i].unit]);
+            }
         } else {
-            dow = config._locale._week.dow;
-            doy = config._locale._week.doy;
+            units = normalizeUnits(units);
+            if (isFunction(this[units])) {
+                return this[units](value);
+            }
+        }
+        return this;
+    }
 
-            weekYear = dfl(w.gg, config._a[YEAR], weekOfYear(moment(), dow, doy).year);
-            week = dfl(w.w, 1);
+    var match1 = /\d/, //       0 - 9
+        match2 = /\d\d/, //      00 - 99
+        match3 = /\d{3}/, //     000 - 999
+        match4 = /\d{4}/, //    0000 - 9999
+        match6 = /[+-]?\d{6}/, // -999999 - 999999
+        match1to2 = /\d\d?/, //       0 - 99
+        match3to4 = /\d\d\d\d?/, //     999 - 9999
+        match5to6 = /\d\d\d\d\d\d?/, //   99999 - 999999
+        match1to3 = /\d{1,3}/, //       0 - 999
+        match1to4 = /\d{1,4}/, //       0 - 9999
+        match1to6 = /[+-]?\d{1,6}/, // -999999 - 999999
+        matchUnsigned = /\d+/, //       0 - inf
+        matchSigned = /[+-]?\d+/, //    -inf - inf
+        matchOffset = /Z|[+-]\d\d:?\d\d/gi, // +00:00 -00:00 +0000 -0000 or Z
+        matchShortOffset = /Z|[+-]\d\d(?::?\d\d)?/gi, // +00 -00 +00:00 -00:00 +0000 -0000 or Z
+        matchTimestamp = /[+-]?\d+(\.\d{1,3})?/, // 123456789 123456789.123
+        // any word (or two) characters or numbers including two/three word month in arabic.
+        // includes scottish gaelic two word and hyphenated months
+        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,
+        regexes;
+
+    regexes = {};
+
+    function addRegexToken(token, regex, strictRegex) {
+        regexes[token] = isFunction(regex)
+            ? regex
+            : function (isStrict, localeData) {
+                  return isStrict && strictRegex ? strictRegex : regex;
+              };
+    }
 
-            if (w.d != null) {
-                // weekday -- low day numbers are considered next week
-                weekday = w.d;
-                if (weekday < dow) {
-                    ++week;
-                }
-            } else if (w.e != null) {
-                // local weekday -- counting starts from begining of week
-                weekday = w.e + dow;
-            } else {
-                // default to begining of week
-                weekday = dow;
-            }
+    function getParseRegexForToken(token, config) {
+        if (!hasOwnProp(regexes, token)) {
+            return new RegExp(unescapeFormat(token));
         }
-        temp = dayOfYearFromWeeks(weekYear, week, weekday, doy, dow);
 
-        config._a[YEAR] = temp.year;
-        config._dayOfYear = temp.dayOfYear;
+        return regexes[token](config._strict, config._locale);
     }
 
-    // convert an array to a date.
-    // the array should mirror the parameters below
-    // note: all values past the year are optional and will default to the lowest possible value.
-    // [year, month, day , hour, minute, second, millisecond]
-    function dateFromConfig(config) {
-        var i, date, input = [], currentDate, yearToUse;
+    // Code from http://stackoverflow.com/questions/3561493/is-there-a-regexp-escape-function-in-javascript
+    function unescapeFormat(s) {
+        return regexEscape(
+            s
+                .replace('\\', '')
+                .replace(
+                    /\\(\[)|\\(\])|\[([^\]\[]*)\]|\\(.)/g,
+                    function (matched, p1, p2, p3, p4) {
+                        return p1 || p2 || p3 || p4;
+                    }
+                )
+        );
+    }
 
-        if (config._d) {
-            return;
+    function regexEscape(s) {
+        return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
+    }
+
+    var tokens = {};
+
+    function addParseToken(token, callback) {
+        var i,
+            func = callback,
+            tokenLen;
+        if (typeof token === 'string') {
+            token = [token];
+        }
+        if (isNumber(callback)) {
+            func = function (input, array) {
+                array[callback] = toInt(input);
+            };
+        }
+        tokenLen = token.length;
+        for (i = 0; i < tokenLen; i++) {
+            tokens[token[i]] = func;
         }
+    }
 
-        currentDate = currentDateArray(config);
+    function addWeekParseToken(token, callback) {
+        addParseToken(token, function (input, array, config, token) {
+            config._w = config._w || {};
+            callback(input, config._w, config, token);
+        });
+    }
 
-        //compute day of the year from weeks and weekdays
-        if (config._w && config._a[DATE] == null && config._a[MONTH] == null) {
-            dayOfYearFromWeekInfo(config);
+    function addTimeToArrayFromToken(token, input, config) {
+        if (input != null && hasOwnProp(tokens, token)) {
+            tokens[token](input, config._a, config, token);
         }
+    }
 
-        //if the day of the year is set, figure out what it is
-        if (config._dayOfYear) {
-            yearToUse = dfl(config._a[YEAR], currentDate[YEAR]);
+    var YEAR = 0,
+        MONTH = 1,
+        DATE = 2,
+        HOUR = 3,
+        MINUTE = 4,
+        SECOND = 5,
+        MILLISECOND = 6,
+        WEEK = 7,
+        WEEKDAY = 8;
+
+    function mod(n, x) {
+        return ((n % x) + x) % x;
+    }
+
+    var indexOf;
 
-            if (config._dayOfYear > daysInYear(yearToUse)) {
-                config._pf._overflowDayOfYear = true;
+    if (Array.prototype.indexOf) {
+        indexOf = Array.prototype.indexOf;
+    } else {
+        indexOf = function (o) {
+            // I know
+            var i;
+            for (i = 0; i < this.length; ++i) {
+                if (this[i] === o) {
+                    return i;
+                }
             }
+            return -1;
+        };
+    }
 
-            date = makeUTCDate(yearToUse, 0, config._dayOfYear);
-            config._a[MONTH] = date.getUTCMonth();
-            config._a[DATE] = date.getUTCDate();
+    function daysInMonth(year, month) {
+        if (isNaN(year) || isNaN(month)) {
+            return NaN;
         }
+        var modMonth = mod(month, 12);
+        year += (month - modMonth) / 12;
+        return modMonth === 1
+            ? isLeapYear(year)
+                ? 29
+                : 28
+            : 31 - ((modMonth % 7) % 2);
+    }
 
-        // Default to current date.
-        // * if no year, month, day of month are given, default to today
-        // * if day of month is given, default month and year
-        // * if month is given, default only year
-        // * if year is given, don't default anything
-        for (i = 0; i < 3 && config._a[i] == null; ++i) {
-            config._a[i] = input[i] = currentDate[i];
+    // FORMATTING
+
+    addFormatToken('M', ['MM', 2], 'Mo', function () {
+        return this.month() + 1;
+    });
+
+    addFormatToken('MMM', 0, 0, function (format) {
+        return this.localeData().monthsShort(this, format);
+    });
+
+    addFormatToken('MMMM', 0, 0, function (format) {
+        return this.localeData().months(this, format);
+    });
+
+    // ALIASES
+
+    addUnitAlias('month', 'M');
+
+    // PRIORITY
+
+    addUnitPriority('month', 8);
+
+    // PARSING
+
+    addRegexToken('M', match1to2);
+    addRegexToken('MM', match1to2, match2);
+    addRegexToken('MMM', function (isStrict, locale) {
+        return locale.monthsShortRegex(isStrict);
+    });
+    addRegexToken('MMMM', function (isStrict, locale) {
+        return locale.monthsRegex(isStrict);
+    });
+
+    addParseToken(['M', 'MM'], function (input, array) {
+        array[MONTH] = toInt(input) - 1;
+    });
+
+    addParseToken(['MMM', 'MMMM'], function (input, array, config, token) {
+        var month = config._locale.monthsParse(input, token, config._strict);
+        // if we didn't find a month name, mark the date as invalid.
+        if (month != null) {
+            array[MONTH] = month;
+        } else {
+            getParsingFlags(config).invalidMonth = input;
         }
+    });
 
-        // Zero out whatever was not defaulted, including time
-        for (; i < 7; i++) {
-            config._a[i] = input[i] = (config._a[i] == null) ? (i === 2 ? 1 : 0) : config._a[i];
+    // LOCALES
+
+    var defaultLocaleMonths =
+            'January_February_March_April_May_June_July_August_September_October_November_December'.split(
+                '_'
+            ),
+        defaultLocaleMonthsShort =
+            'Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec'.split('_'),
+        MONTHS_IN_FORMAT = /D[oD]?(\[[^\[\]]*\]|\s)+MMMM?/,
+        defaultMonthsShortRegex = matchWord,
+        defaultMonthsRegex = matchWord;
+
+    function localeMonths(m, format) {
+        if (!m) {
+            return isArray(this._months)
+                ? this._months
+                : this._months['standalone'];
         }
+        return isArray(this._months)
+            ? this._months[m.month()]
+            : this._months[
+                  (this._months.isFormat || MONTHS_IN_FORMAT).test(format)
+                      ? 'format'
+                      : 'standalone'
+              ][m.month()];
+    }
 
-        // Check for 24:00:00.000
-        if (config._a[HOUR] === 24 &&
-                config._a[MINUTE] === 0 &&
-                config._a[SECOND] === 0 &&
-                config._a[MILLISECOND] === 0) {
-            config._nextDay = true;
-            config._a[HOUR] = 0;
+    function localeMonthsShort(m, format) {
+        if (!m) {
+            return isArray(this._monthsShort)
+                ? this._monthsShort
+                : this._monthsShort['standalone'];
         }
+        return isArray(this._monthsShort)
+            ? this._monthsShort[m.month()]
+            : this._monthsShort[
+                  MONTHS_IN_FORMAT.test(format) ? 'format' : 'standalone'
+              ][m.month()];
+    }
 
-        config._d = (config._useUTC ? makeUTCDate : makeDate).apply(null, input);
-        // Apply timezone offset from input. The actual utcOffset can be changed
-        // with parseZone.
-        if (config._tzm != null) {
-            config._d.setUTCMinutes(config._d.getUTCMinutes() - config._tzm);
+    function handleStrictParse(monthName, format, strict) {
+        var i,
+            ii,
+            mom,
+            llc = monthName.toLocaleLowerCase();
+        if (!this._monthsParse) {
+            // this is not used
+            this._monthsParse = [];
+            this._longMonthsParse = [];
+            this._shortMonthsParse = [];
+            for (i = 0; i < 12; ++i) {
+                mom = createUTC([2000, i]);
+                this._shortMonthsParse[i] = this.monthsShort(
+                    mom,
+                    ''
+                ).toLocaleLowerCase();
+                this._longMonthsParse[i] = this.months(mom, '').toLocaleLowerCase();
+            }
         }
 
-        if (config._nextDay) {
-            config._a[HOUR] = 24;
+        if (strict) {
+            if (format === 'MMM') {
+                ii = indexOf.call(this._shortMonthsParse, llc);
+                return ii !== -1 ? ii : null;
+            } else {
+                ii = indexOf.call(this._longMonthsParse, llc);
+                return ii !== -1 ? ii : null;
+            }
+        } else {
+            if (format === 'MMM') {
+                ii = indexOf.call(this._shortMonthsParse, llc);
+                if (ii !== -1) {
+                    return ii;
+                }
+                ii = indexOf.call(this._longMonthsParse, llc);
+                return ii !== -1 ? ii : null;
+            } else {
+                ii = indexOf.call(this._longMonthsParse, llc);
+                if (ii !== -1) {
+                    return ii;
+                }
+                ii = indexOf.call(this._shortMonthsParse, llc);
+                return ii !== -1 ? ii : null;
+            }
         }
     }
 
-    function dateFromObject(config) {
-        var normalizedInput;
+    function localeMonthsParse(monthName, format, strict) {
+        var i, mom, regex;
 
-        if (config._d) {
-            return;
+        if (this._monthsParseExact) {
+            return handleStrictParse.call(this, monthName, format, strict);
         }
 
-        normalizedInput = normalizeObjectUnits(config._i);
-        config._a = [
-            normalizedInput.year,
-            normalizedInput.month,
-            normalizedInput.day || normalizedInput.date,
-            normalizedInput.hour,
-            normalizedInput.minute,
-            normalizedInput.second,
-            normalizedInput.millisecond
-        ];
+        if (!this._monthsParse) {
+            this._monthsParse = [];
+            this._longMonthsParse = [];
+            this._shortMonthsParse = [];
+        }
 
-        dateFromConfig(config);
+        // TODO: add sorting
+        // Sorting makes sure if one month (or abbr) is a prefix of another
+        // see sorting in computeMonthsParse
+        for (i = 0; i < 12; i++) {
+            // make the regex if we don't have it already
+            mom = createUTC([2000, i]);
+            if (strict && !this._longMonthsParse[i]) {
+                this._longMonthsParse[i] = new RegExp(
+                    '^' + this.months(mom, '').replace('.', '') + '$',
+                    'i'
+                );
+                this._shortMonthsParse[i] = new RegExp(
+                    '^' + this.monthsShort(mom, '').replace('.', '') + '$',
+                    'i'
+                );
+            }
+            if (!strict && !this._monthsParse[i]) {
+                regex =
+                    '^' + this.months(mom, '') + '|^' + this.monthsShort(mom, '');
+                this._monthsParse[i] = new RegExp(regex.replace('.', ''), 'i');
+            }
+            // test the regex
+            if (
+                strict &&
+                format === 'MMMM' &&
+                this._longMonthsParse[i].test(monthName)
+            ) {
+                return i;
+            } else if (
+                strict &&
+                format === 'MMM' &&
+                this._shortMonthsParse[i].test(monthName)
+            ) {
+                return i;
+            } else if (!strict && this._monthsParse[i].test(monthName)) {
+                return i;
+            }
+        }
     }
 
-    function currentDateArray(config) {
-        var now = new Date();
-        if (config._useUTC) {
-            return [
-                now.getUTCFullYear(),
-                now.getUTCMonth(),
-                now.getUTCDate()
-            ];
+    // MOMENTS
+
+    function setMonth(mom, value) {
+        var dayOfMonth;
+
+        if (!mom.isValid()) {
+            // No op
+            return mom;
+        }
+
+        if (typeof value === 'string') {
+            if (/^\d+$/.test(value)) {
+                value = toInt(value);
+            } else {
+                value = mom.localeData().monthsParse(value);
+                // TODO: Another silent failure?
+                if (!isNumber(value)) {
+                    return mom;
+                }
+            }
+        }
+
+        dayOfMonth = Math.min(mom.date(), daysInMonth(mom.year(), value));
+        mom._d['set' + (mom._isUTC ? 'UTC' : '') + 'Month'](value, dayOfMonth);
+        return mom;
+    }
+
+    function getSetMonth(value) {
+        if (value != null) {
+            setMonth(this, value);
+            hooks.updateOffset(this, true);
+            return this;
+        } else {
+            return get(this, 'Month');
+        }
+    }
+
+    function getDaysInMonth() {
+        return daysInMonth(this.year(), this.month());
+    }
+
+    function monthsShortRegex(isStrict) {
+        if (this._monthsParseExact) {
+            if (!hasOwnProp(this, '_monthsRegex')) {
+                computeMonthsParse.call(this);
+            }
+            if (isStrict) {
+                return this._monthsShortStrictRegex;
+            } else {
+                return this._monthsShortRegex;
+            }
+        } else {
+            if (!hasOwnProp(this, '_monthsShortRegex')) {
+                this._monthsShortRegex = defaultMonthsShortRegex;
+            }
+            return this._monthsShortStrictRegex && isStrict
+                ? this._monthsShortStrictRegex
+                : this._monthsShortRegex;
+        }
+    }
+
+    function monthsRegex(isStrict) {
+        if (this._monthsParseExact) {
+            if (!hasOwnProp(this, '_monthsRegex')) {
+                computeMonthsParse.call(this);
+            }
+            if (isStrict) {
+                return this._monthsStrictRegex;
+            } else {
+                return this._monthsRegex;
+            }
         } else {
-            return [now.getFullYear(), now.getMonth(), now.getDate()];
+            if (!hasOwnProp(this, '_monthsRegex')) {
+                this._monthsRegex = defaultMonthsRegex;
+            }
+            return this._monthsStrictRegex && isStrict
+                ? this._monthsStrictRegex
+                : this._monthsRegex;
+        }
+    }
+
+    function computeMonthsParse() {
+        function cmpLenRev(a, b) {
+            return b.length - a.length;
+        }
+
+        var shortPieces = [],
+            longPieces = [],
+            mixedPieces = [],
+            i,
+            mom;
+        for (i = 0; i < 12; i++) {
+            // make the regex if we don't have it already
+            mom = createUTC([2000, i]);
+            shortPieces.push(this.monthsShort(mom, ''));
+            longPieces.push(this.months(mom, ''));
+            mixedPieces.push(this.months(mom, ''));
+            mixedPieces.push(this.monthsShort(mom, ''));
+        }
+        // Sorting makes sure if one month (or abbr) is a prefix of another it
+        // will match the longer piece.
+        shortPieces.sort(cmpLenRev);
+        longPieces.sort(cmpLenRev);
+        mixedPieces.sort(cmpLenRev);
+        for (i = 0; i < 12; i++) {
+            shortPieces[i] = regexEscape(shortPieces[i]);
+            longPieces[i] = regexEscape(longPieces[i]);
+        }
+        for (i = 0; i < 24; i++) {
+            mixedPieces[i] = regexEscape(mixedPieces[i]);
         }
+
+        this._monthsRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
+        this._monthsShortRegex = this._monthsRegex;
+        this._monthsStrictRegex = new RegExp(
+            '^(' + longPieces.join('|') + ')',
+            'i'
+        );
+        this._monthsShortStrictRegex = new RegExp(
+            '^(' + shortPieces.join('|') + ')',
+            'i'
+        );
+    }
+
+    // FORMATTING
+
+    addFormatToken('Y', 0, 0, function () {
+        var y = this.year();
+        return y <= 9999 ? zeroFill(y, 4) : '+' + y;
+    });
+
+    addFormatToken(0, ['YY', 2], 0, function () {
+        return this.year() % 100;
+    });
+
+    addFormatToken(0, ['YYYY', 4], 0, 'year');
+    addFormatToken(0, ['YYYYY', 5], 0, 'year');
+    addFormatToken(0, ['YYYYYY', 6, true], 0, 'year');
+
+    // ALIASES
+
+    addUnitAlias('year', 'y');
+
+    // PRIORITIES
+
+    addUnitPriority('year', 1);
+
+    // PARSING
+
+    addRegexToken('Y', matchSigned);
+    addRegexToken('YY', match1to2, match2);
+    addRegexToken('YYYY', match1to4, match4);
+    addRegexToken('YYYYY', match1to6, match6);
+    addRegexToken('YYYYYY', match1to6, match6);
+
+    addParseToken(['YYYYY', 'YYYYYY'], YEAR);
+    addParseToken('YYYY', function (input, array) {
+        array[YEAR] =
+            input.length === 2 ? hooks.parseTwoDigitYear(input) : toInt(input);
+    });
+    addParseToken('YY', function (input, array) {
+        array[YEAR] = hooks.parseTwoDigitYear(input);
+    });
+    addParseToken('Y', function (input, array) {
+        array[YEAR] = parseInt(input, 10);
+    });
+
+    // HELPERS
+
+    function daysInYear(year) {
+        return isLeapYear(year) ? 366 : 365;
+    }
+
+    // HOOKS
+
+    hooks.parseTwoDigitYear = function (input) {
+        return toInt(input) + (toInt(input) > 68 ? 1900 : 2000);
+    };
+
+    // MOMENTS
+
+    var getSetYear = makeGetSet('FullYear', true);
+
+    function getIsLeapYear() {
+        return isLeapYear(this.year());
+    }
+
+    function createDate(y, m, d, h, M, s, ms) {
+        // can't just apply() to create a date:
+        // https://stackoverflow.com/q/181348
+        var date;
+        // the date constructor remaps years 0-99 to 1900-1999
+        if (y < 100 && y >= 0) {
+            // preserve leap years using a full 400 year cycle, then reset
+            date = new Date(y + 400, m, d, h, M, s, ms);
+            if (isFinite(date.getFullYear())) {
+                date.setFullYear(y);
+            }
+        } else {
+            date = new Date(y, m, d, h, M, s, ms);
+        }
+
+        return date;
+    }
+
+    function createUTCDate(y) {
+        var date, args;
+        // the Date.UTC function remaps years 0-99 to 1900-1999
+        if (y < 100 && y >= 0) {
+            args = Array.prototype.slice.call(arguments);
+            // preserve leap years using a full 400 year cycle, then reset
+            args[0] = y + 400;
+            date = new Date(Date.UTC.apply(null, args));
+            if (isFinite(date.getUTCFullYear())) {
+                date.setUTCFullYear(y);
+            }
+        } else {
+            date = new Date(Date.UTC.apply(null, arguments));
+        }
+
+        return date;
+    }
+
+    // start-of-first-week - start-of-year
+    function firstWeekOffset(year, dow, doy) {
+        var // first-week day -- which january is always in the first week (4 for iso, 1 for other)
+            fwd = 7 + dow - doy,
+            // first-week day local weekday -- which local weekday is fwd
+            fwdlw = (7 + createUTCDate(year, 0, fwd).getUTCDay() - dow) % 7;
+
+        return -fwdlw + fwd - 1;
+    }
+
+    // https://en.wikipedia.org/wiki/ISO_week_date#Calculating_a_date_given_the_year.2C_week_number_and_weekday
+    function dayOfYearFromWeeks(year, week, weekday, dow, doy) {
+        var localWeekday = (7 + weekday - dow) % 7,
+            weekOffset = firstWeekOffset(year, dow, doy),
+            dayOfYear = 1 + 7 * (week - 1) + localWeekday + weekOffset,
+            resYear,
+            resDayOfYear;
+
+        if (dayOfYear <= 0) {
+            resYear = year - 1;
+            resDayOfYear = daysInYear(resYear) + dayOfYear;
+        } else if (dayOfYear > daysInYear(year)) {
+            resYear = year + 1;
+            resDayOfYear = dayOfYear - daysInYear(year);
+        } else {
+            resYear = year;
+            resDayOfYear = dayOfYear;
+        }
+
+        return {
+            year: resYear,
+            dayOfYear: resDayOfYear,
+        };
+    }
+
+    function weekOfYear(mom, dow, doy) {
+        var weekOffset = firstWeekOffset(mom.year(), dow, doy),
+            week = Math.floor((mom.dayOfYear() - weekOffset - 1) / 7) + 1,
+            resWeek,
+            resYear;
+
+        if (week < 1) {
+            resYear = mom.year() - 1;
+            resWeek = week + weeksInYear(resYear, dow, doy);
+        } else if (week > weeksInYear(mom.year(), dow, doy)) {
+            resWeek = week - weeksInYear(mom.year(), dow, doy);
+            resYear = mom.year() + 1;
+        } else {
+            resYear = mom.year();
+            resWeek = week;
+        }
+
+        return {
+            week: resWeek,
+            year: resYear,
+        };
+    }
+
+    function weeksInYear(year, dow, doy) {
+        var weekOffset = firstWeekOffset(year, dow, doy),
+            weekOffsetNext = firstWeekOffset(year + 1, dow, doy);
+        return (daysInYear(year) - weekOffset + weekOffsetNext) / 7;
+    }
+
+    // FORMATTING
+
+    addFormatToken('w', ['ww', 2], 'wo', 'week');
+    addFormatToken('W', ['WW', 2], 'Wo', 'isoWeek');
+
+    // ALIASES
+
+    addUnitAlias('week', 'w');
+    addUnitAlias('isoWeek', 'W');
+
+    // PRIORITIES
+
+    addUnitPriority('week', 5);
+    addUnitPriority('isoWeek', 5);
+
+    // PARSING
+
+    addRegexToken('w', match1to2);
+    addRegexToken('ww', match1to2, match2);
+    addRegexToken('W', match1to2);
+    addRegexToken('WW', match1to2, match2);
+
+    addWeekParseToken(
+        ['w', 'ww', 'W', 'WW'],
+        function (input, week, config, token) {
+            week[token.substr(0, 1)] = toInt(input);
+        }
+    );
+
+    // HELPERS
+
+    // LOCALES
+
+    function localeWeek(mom) {
+        return weekOfYear(mom, this._week.dow, this._week.doy).week;
+    }
+
+    var defaultLocaleWeek = {
+        dow: 0, // Sunday is the first day of the week.
+        doy: 6, // The week that contains Jan 6th is the first week of the year.
+    };
+
+    function localeFirstDayOfWeek() {
+        return this._week.dow;
+    }
+
+    function localeFirstDayOfYear() {
+        return this._week.doy;
+    }
+
+    // MOMENTS
+
+    function getSetWeek(input) {
+        var week = this.localeData().week(this);
+        return input == null ? week : this.add((input - week) * 7, 'd');
+    }
+
+    function getSetISOWeek(input) {
+        var week = weekOfYear(this, 1, 4).week;
+        return input == null ? week : this.add((input - week) * 7, 'd');
+    }
+
+    // FORMATTING
+
+    addFormatToken('d', 0, 'do', 'day');
+
+    addFormatToken('dd', 0, 0, function (format) {
+        return this.localeData().weekdaysMin(this, format);
+    });
+
+    addFormatToken('ddd', 0, 0, function (format) {
+        return this.localeData().weekdaysShort(this, format);
+    });
+
+    addFormatToken('dddd', 0, 0, function (format) {
+        return this.localeData().weekdays(this, format);
+    });
+
+    addFormatToken('e', 0, 0, 'weekday');
+    addFormatToken('E', 0, 0, 'isoWeekday');
+
+    // ALIASES
+
+    addUnitAlias('day', 'd');
+    addUnitAlias('weekday', 'e');
+    addUnitAlias('isoWeekday', 'E');
+
+    // PRIORITY
+    addUnitPriority('day', 11);
+    addUnitPriority('weekday', 11);
+    addUnitPriority('isoWeekday', 11);
+
+    // PARSING
+
+    addRegexToken('d', match1to2);
+    addRegexToken('e', match1to2);
+    addRegexToken('E', match1to2);
+    addRegexToken('dd', function (isStrict, locale) {
+        return locale.weekdaysMinRegex(isStrict);
+    });
+    addRegexToken('ddd', function (isStrict, locale) {
+        return locale.weekdaysShortRegex(isStrict);
+    });
+    addRegexToken('dddd', function (isStrict, locale) {
+        return locale.weekdaysRegex(isStrict);
+    });
+
+    addWeekParseToken(['dd', 'ddd', 'dddd'], function (input, week, config, token) {
+        var weekday = config._locale.weekdaysParse(input, token, config._strict);
+        // if we didn't get a weekday name, mark the date as invalid
+        if (weekday != null) {
+            week.d = weekday;
+        } else {
+            getParsingFlags(config).invalidWeekday = input;
+        }
+    });
+
+    addWeekParseToken(['d', 'e', 'E'], function (input, week, config, token) {
+        week[token] = toInt(input);
+    });
+
+    // HELPERS
+
+    function parseWeekday(input, locale) {
+        if (typeof input !== 'string') {
+            return input;
+        }
+
+        if (!isNaN(input)) {
+            return parseInt(input, 10);
+        }
+
+        input = locale.weekdaysParse(input);
+        if (typeof input === 'number') {
+            return input;
+        }
+
+        return null;
+    }
+
+    function parseIsoWeekday(input, locale) {
+        if (typeof input === 'string') {
+            return locale.weekdaysParse(input) % 7 || 7;
+        }
+        return isNaN(input) ? null : input;
+    }
+
+    // LOCALES
+    function shiftWeekdays(ws, n) {
+        return ws.slice(n, 7).concat(ws.slice(0, n));
+    }
+
+    var defaultLocaleWeekdays =
+            'Sunday_Monday_Tuesday_Wednesday_Thursday_Friday_Saturday'.split('_'),
+        defaultLocaleWeekdaysShort = 'Sun_Mon_Tue_Wed_Thu_Fri_Sat'.split('_'),
+        defaultLocaleWeekdaysMin = 'Su_Mo_Tu_We_Th_Fr_Sa'.split('_'),
+        defaultWeekdaysRegex = matchWord,
+        defaultWeekdaysShortRegex = matchWord,
+        defaultWeekdaysMinRegex = matchWord;
+
+    function localeWeekdays(m, format) {
+        var weekdays = isArray(this._weekdays)
+            ? this._weekdays
+            : this._weekdays[
+                  m && m !== true && this._weekdays.isFormat.test(format)
+                      ? 'format'
+                      : 'standalone'
+              ];
+        return m === true
+            ? shiftWeekdays(weekdays, this._week.dow)
+            : m
+            ? weekdays[m.day()]
+            : weekdays;
+    }
+
+    function localeWeekdaysShort(m) {
+        return m === true
+            ? shiftWeekdays(this._weekdaysShort, this._week.dow)
+            : m
+            ? this._weekdaysShort[m.day()]
+            : this._weekdaysShort;
+    }
+
+    function localeWeekdaysMin(m) {
+        return m === true
+            ? shiftWeekdays(this._weekdaysMin, this._week.dow)
+            : m
+            ? this._weekdaysMin[m.day()]
+            : this._weekdaysMin;
+    }
+
+    function handleStrictParse$1(weekdayName, format, strict) {
+        var i,
+            ii,
+            mom,
+            llc = weekdayName.toLocaleLowerCase();
+        if (!this._weekdaysParse) {
+            this._weekdaysParse = [];
+            this._shortWeekdaysParse = [];
+            this._minWeekdaysParse = [];
+
+            for (i = 0; i < 7; ++i) {
+                mom = createUTC([2000, 1]).day(i);
+                this._minWeekdaysParse[i] = this.weekdaysMin(
+                    mom,
+                    ''
+                ).toLocaleLowerCase();
+                this._shortWeekdaysParse[i] = this.weekdaysShort(
+                    mom,
+                    ''
+                ).toLocaleLowerCase();
+                this._weekdaysParse[i] = this.weekdays(mom, '').toLocaleLowerCase();
+            }
+        }
+
+        if (strict) {
+            if (format === 'dddd') {
+                ii = indexOf.call(this._weekdaysParse, llc);
+                return ii !== -1 ? ii : null;
+            } else if (format === 'ddd') {
+                ii = indexOf.call(this._shortWeekdaysParse, llc);
+                return ii !== -1 ? ii : null;
+            } else {
+                ii = indexOf.call(this._minWeekdaysParse, llc);
+                return ii !== -1 ? ii : null;
+            }
+        } else {
+            if (format === 'dddd') {
+                ii = indexOf.call(this._weekdaysParse, llc);
+                if (ii !== -1) {
+                    return ii;
+                }
+                ii = indexOf.call(this._shortWeekdaysParse, llc);
+                if (ii !== -1) {
+                    return ii;
+                }
+                ii = indexOf.call(this._minWeekdaysParse, llc);
+                return ii !== -1 ? ii : null;
+            } else if (format === 'ddd') {
+                ii = indexOf.call(this._shortWeekdaysParse, llc);
+                if (ii !== -1) {
+                    return ii;
+                }
+                ii = indexOf.call(this._weekdaysParse, llc);
+                if (ii !== -1) {
+                    return ii;
+                }
+                ii = indexOf.call(this._minWeekdaysParse, llc);
+                return ii !== -1 ? ii : null;
+            } else {
+                ii = indexOf.call(this._minWeekdaysParse, llc);
+                if (ii !== -1) {
+                    return ii;
+                }
+                ii = indexOf.call(this._weekdaysParse, llc);
+                if (ii !== -1) {
+                    return ii;
+                }
+                ii = indexOf.call(this._shortWeekdaysParse, llc);
+                return ii !== -1 ? ii : null;
+            }
+        }
+    }
+
+    function localeWeekdaysParse(weekdayName, format, strict) {
+        var i, mom, regex;
+
+        if (this._weekdaysParseExact) {
+            return handleStrictParse$1.call(this, weekdayName, format, strict);
+        }
+
+        if (!this._weekdaysParse) {
+            this._weekdaysParse = [];
+            this._minWeekdaysParse = [];
+            this._shortWeekdaysParse = [];
+            this._fullWeekdaysParse = [];
+        }
+
+        for (i = 0; i < 7; i++) {
+            // make the regex if we don't have it already
+
+            mom = createUTC([2000, 1]).day(i);
+            if (strict && !this._fullWeekdaysParse[i]) {
+                this._fullWeekdaysParse[i] = new RegExp(
+                    '^' + this.weekdays(mom, '').replace('.', '\\.?') + '$',
+                    'i'
+                );
+                this._shortWeekdaysParse[i] = new RegExp(
+                    '^' + this.weekdaysShort(mom, '').replace('.', '\\.?') + '$',
+                    'i'
+                );
+                this._minWeekdaysParse[i] = new RegExp(
+                    '^' + this.weekdaysMin(mom, '').replace('.', '\\.?') + '$',
+                    'i'
+                );
+            }
+            if (!this._weekdaysParse[i]) {
+                regex =
+                    '^' +
+                    this.weekdays(mom, '') +
+                    '|^' +
+                    this.weekdaysShort(mom, '') +
+                    '|^' +
+                    this.weekdaysMin(mom, '');
+                this._weekdaysParse[i] = new RegExp(regex.replace('.', ''), 'i');
+            }
+            // test the regex
+            if (
+                strict &&
+                format === 'dddd' &&
+                this._fullWeekdaysParse[i].test(weekdayName)
+            ) {
+                return i;
+            } else if (
+                strict &&
+                format === 'ddd' &&
+                this._shortWeekdaysParse[i].test(weekdayName)
+            ) {
+                return i;
+            } else if (
+                strict &&
+                format === 'dd' &&
+                this._minWeekdaysParse[i].test(weekdayName)
+            ) {
+                return i;
+            } else if (!strict && this._weekdaysParse[i].test(weekdayName)) {
+                return i;
+            }
+        }
+    }
+
+    // MOMENTS
+
+    function getSetDayOfWeek(input) {
+        if (!this.isValid()) {
+            return input != null ? this : NaN;
+        }
+        var day = this._isUTC ? this._d.getUTCDay() : this._d.getDay();
+        if (input != null) {
+            input = parseWeekday(input, this.localeData());
+            return this.add(input - day, 'd');
+        } else {
+            return day;
+        }
+    }
+
+    function getSetLocaleDayOfWeek(input) {
+        if (!this.isValid()) {
+            return input != null ? this : NaN;
+        }
+        var weekday = (this.day() + 7 - this.localeData()._week.dow) % 7;
+        return input == null ? weekday : this.add(input - weekday, 'd');
+    }
+
+    function getSetISODayOfWeek(input) {
+        if (!this.isValid()) {
+            return input != null ? this : NaN;
+        }
+
+        // behaves the same as moment#day except
+        // as a getter, returns 7 instead of 0 (1-7 range instead of 0-6)
+        // as a setter, sunday should belong to the previous week.
+
+        if (input != null) {
+            var weekday = parseIsoWeekday(input, this.localeData());
+            return this.day(this.day() % 7 ? weekday : weekday - 7);
+        } else {
+            return this.day() || 7;
+        }
+    }
+
+    function weekdaysRegex(isStrict) {
+        if (this._weekdaysParseExact) {
+            if (!hasOwnProp(this, '_weekdaysRegex')) {
+                computeWeekdaysParse.call(this);
+            }
+            if (isStrict) {
+                return this._weekdaysStrictRegex;
+            } else {
+                return this._weekdaysRegex;
+            }
+        } else {
+            if (!hasOwnProp(this, '_weekdaysRegex')) {
+                this._weekdaysRegex = defaultWeekdaysRegex;
+            }
+            return this._weekdaysStrictRegex && isStrict
+                ? this._weekdaysStrictRegex
+                : this._weekdaysRegex;
+        }
+    }
+
+    function weekdaysShortRegex(isStrict) {
+        if (this._weekdaysParseExact) {
+            if (!hasOwnProp(this, '_weekdaysRegex')) {
+                computeWeekdaysParse.call(this);
+            }
+            if (isStrict) {
+                return this._weekdaysShortStrictRegex;
+            } else {
+                return this._weekdaysShortRegex;
+            }
+        } else {
+            if (!hasOwnProp(this, '_weekdaysShortRegex')) {
+                this._weekdaysShortRegex = defaultWeekdaysShortRegex;
+            }
+            return this._weekdaysShortStrictRegex && isStrict
+                ? this._weekdaysShortStrictRegex
+                : this._weekdaysShortRegex;
+        }
+    }
+
+    function weekdaysMinRegex(isStrict) {
+        if (this._weekdaysParseExact) {
+            if (!hasOwnProp(this, '_weekdaysRegex')) {
+                computeWeekdaysParse.call(this);
+            }
+            if (isStrict) {
+                return this._weekdaysMinStrictRegex;
+            } else {
+                return this._weekdaysMinRegex;
+            }
+        } else {
+            if (!hasOwnProp(this, '_weekdaysMinRegex')) {
+                this._weekdaysMinRegex = defaultWeekdaysMinRegex;
+            }
+            return this._weekdaysMinStrictRegex && isStrict
+                ? this._weekdaysMinStrictRegex
+                : this._weekdaysMinRegex;
+        }
+    }
+
+    function computeWeekdaysParse() {
+        function cmpLenRev(a, b) {
+            return b.length - a.length;
+        }
+
+        var minPieces = [],
+            shortPieces = [],
+            longPieces = [],
+            mixedPieces = [],
+            i,
+            mom,
+            minp,
+            shortp,
+            longp;
+        for (i = 0; i < 7; i++) {
+            // make the regex if we don't have it already
+            mom = createUTC([2000, 1]).day(i);
+            minp = regexEscape(this.weekdaysMin(mom, ''));
+            shortp = regexEscape(this.weekdaysShort(mom, ''));
+            longp = regexEscape(this.weekdays(mom, ''));
+            minPieces.push(minp);
+            shortPieces.push(shortp);
+            longPieces.push(longp);
+            mixedPieces.push(minp);
+            mixedPieces.push(shortp);
+            mixedPieces.push(longp);
+        }
+        // Sorting makes sure if one weekday (or abbr) is a prefix of another it
+        // will match the longer piece.
+        minPieces.sort(cmpLenRev);
+        shortPieces.sort(cmpLenRev);
+        longPieces.sort(cmpLenRev);
+        mixedPieces.sort(cmpLenRev);
+
+        this._weekdaysRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
+        this._weekdaysShortRegex = this._weekdaysRegex;
+        this._weekdaysMinRegex = this._weekdaysRegex;
+
+        this._weekdaysStrictRegex = new RegExp(
+            '^(' + longPieces.join('|') + ')',
+            'i'
+        );
+        this._weekdaysShortStrictRegex = new RegExp(
+            '^(' + shortPieces.join('|') + ')',
+            'i'
+        );
+        this._weekdaysMinStrictRegex = new RegExp(
+            '^(' + minPieces.join('|') + ')',
+            'i'
+        );
+    }
+
+    // FORMATTING
+
+    function hFormat() {
+        return this.hours() % 12 || 12;
+    }
+
+    function kFormat() {
+        return this.hours() || 24;
+    }
+
+    addFormatToken('H', ['HH', 2], 0, 'hour');
+    addFormatToken('h', ['hh', 2], 0, hFormat);
+    addFormatToken('k', ['kk', 2], 0, kFormat);
+
+    addFormatToken('hmm', 0, 0, function () {
+        return '' + hFormat.apply(this) + zeroFill(this.minutes(), 2);
+    });
+
+    addFormatToken('hmmss', 0, 0, function () {
+        return (
+            '' +
+            hFormat.apply(this) +
+            zeroFill(this.minutes(), 2) +
+            zeroFill(this.seconds(), 2)
+        );
+    });
+
+    addFormatToken('Hmm', 0, 0, function () {
+        return '' + this.hours() + zeroFill(this.minutes(), 2);
+    });
+
+    addFormatToken('Hmmss', 0, 0, function () {
+        return (
+            '' +
+            this.hours() +
+            zeroFill(this.minutes(), 2) +
+            zeroFill(this.seconds(), 2)
+        );
+    });
+
+    function meridiem(token, lowercase) {
+        addFormatToken(token, 0, 0, function () {
+            return this.localeData().meridiem(
+                this.hours(),
+                this.minutes(),
+                lowercase
+            );
+        });
+    }
+
+    meridiem('a', true);
+    meridiem('A', false);
+
+    // ALIASES
+
+    addUnitAlias('hour', 'h');
+
+    // PRIORITY
+    addUnitPriority('hour', 13);
+
+    // PARSING
+
+    function matchMeridiem(isStrict, locale) {
+        return locale._meridiemParse;
+    }
+
+    addRegexToken('a', matchMeridiem);
+    addRegexToken('A', matchMeridiem);
+    addRegexToken('H', match1to2);
+    addRegexToken('h', match1to2);
+    addRegexToken('k', match1to2);
+    addRegexToken('HH', match1to2, match2);
+    addRegexToken('hh', match1to2, match2);
+    addRegexToken('kk', match1to2, match2);
+
+    addRegexToken('hmm', match3to4);
+    addRegexToken('hmmss', match5to6);
+    addRegexToken('Hmm', match3to4);
+    addRegexToken('Hmmss', match5to6);
+
+    addParseToken(['H', 'HH'], HOUR);
+    addParseToken(['k', 'kk'], function (input, array, config) {
+        var kInput = toInt(input);
+        array[HOUR] = kInput === 24 ? 0 : kInput;
+    });
+    addParseToken(['a', 'A'], function (input, array, config) {
+        config._isPm = config._locale.isPM(input);
+        config._meridiem = input;
+    });
+    addParseToken(['h', 'hh'], function (input, array, config) {
+        array[HOUR] = toInt(input);
+        getParsingFlags(config).bigHour = true;
+    });
+    addParseToken('hmm', function (input, array, config) {
+        var pos = input.length - 2;
+        array[HOUR] = toInt(input.substr(0, pos));
+        array[MINUTE] = toInt(input.substr(pos));
+        getParsingFlags(config).bigHour = true;
+    });
+    addParseToken('hmmss', function (input, array, config) {
+        var pos1 = input.length - 4,
+            pos2 = input.length - 2;
+        array[HOUR] = toInt(input.substr(0, pos1));
+        array[MINUTE] = toInt(input.substr(pos1, 2));
+        array[SECOND] = toInt(input.substr(pos2));
+        getParsingFlags(config).bigHour = true;
+    });
+    addParseToken('Hmm', function (input, array, config) {
+        var pos = input.length - 2;
+        array[HOUR] = toInt(input.substr(0, pos));
+        array[MINUTE] = toInt(input.substr(pos));
+    });
+    addParseToken('Hmmss', function (input, array, config) {
+        var pos1 = input.length - 4,
+            pos2 = input.length - 2;
+        array[HOUR] = toInt(input.substr(0, pos1));
+        array[MINUTE] = toInt(input.substr(pos1, 2));
+        array[SECOND] = toInt(input.substr(pos2));
+    });
+
+    // LOCALES
+
+    function localeIsPM(input) {
+        // IE8 Quirks Mode & IE7 Standards Mode do not allow accessing strings like arrays
+        // Using charAt should be more compatible.
+        return (input + '').toLowerCase().charAt(0) === 'p';
+    }
+
+    var defaultLocaleMeridiemParse = /[ap]\.?m?\.?/i,
+        // Setting the hour should keep the time, because the user explicitly
+        // specified which hour they want. So trying to maintain the same hour (in
+        // a new timezone) makes sense. Adding/subtracting hours does not follow
+        // this rule.
+        getSetHour = makeGetSet('Hours', true);
+
+    function localeMeridiem(hours, minutes, isLower) {
+        if (hours > 11) {
+            return isLower ? 'pm' : 'PM';
+        } else {
+            return isLower ? 'am' : 'AM';
+        }
+    }
+
+    var baseConfig = {
+        calendar: defaultCalendar,
+        longDateFormat: defaultLongDateFormat,
+        invalidDate: defaultInvalidDate,
+        ordinal: defaultOrdinal,
+        dayOfMonthOrdinalParse: defaultDayOfMonthOrdinalParse,
+        relativeTime: defaultRelativeTime,
+
+        months: defaultLocaleMonths,
+        monthsShort: defaultLocaleMonthsShort,
+
+        week: defaultLocaleWeek,
+
+        weekdays: defaultLocaleWeekdays,
+        weekdaysMin: defaultLocaleWeekdaysMin,
+        weekdaysShort: defaultLocaleWeekdaysShort,
+
+        meridiemParse: defaultLocaleMeridiemParse,
+    };
+
+    // internal storage for locale config files
+    var locales = {},
+        localeFamilies = {},
+        globalLocale;
+
+    function commonPrefix(arr1, arr2) {
+        var i,
+            minl = Math.min(arr1.length, arr2.length);
+        for (i = 0; i < minl; i += 1) {
+            if (arr1[i] !== arr2[i]) {
+                return i;
+            }
+        }
+        return minl;
+    }
+
+    function normalizeLocale(key) {
+        return key ? key.toLowerCase().replace('_', '-') : key;
+    }
+
+    // pick the locale from the array
+    // try ['en-au', 'en-gb'] as 'en-au', 'en-gb', 'en', as in move through the list trying each
+    // substring from most specific to least, but move to the next array item if it's a more specific variant than the current root
+    function chooseLocale(names) {
+        var i = 0,
+            j,
+            next,
+            locale,
+            split;
+
+        while (i < names.length) {
+            split = normalizeLocale(names[i]).split('-');
+            j = split.length;
+            next = normalizeLocale(names[i + 1]);
+            next = next ? next.split('-') : null;
+            while (j > 0) {
+                locale = loadLocale(split.slice(0, j).join('-'));
+                if (locale) {
+                    return locale;
+                }
+                if (
+                    next &&
+                    next.length >= j &&
+                    commonPrefix(split, next) >= j - 1
+                ) {
+                    //the next array item is better than a shallower substring of this one
+                    break;
+                }
+                j--;
+            }
+            i++;
+        }
+        return globalLocale;
+    }
+
+    function isLocaleNameSane(name) {
+        // Prevent names that look like filesystem paths, i.e contain '/' or '\'
+        return name.match('^[^/\\\\]*$') != null;
+    }
+
+    function loadLocale(name) {
+        var oldLocale = null,
+            aliasedRequire;
+        // TODO: Find a better way to register and load all the locales in Node
+        if (
+            locales[name] === undefined &&
+            typeof module !== 'undefined' &&
+            module &&
+            module.exports &&
+            isLocaleNameSane(name)
+        ) {
+            try {
+                oldLocale = globalLocale._abbr;
+                aliasedRequire = require;
+                aliasedRequire('./locale/' + name);
+                getSetGlobalLocale(oldLocale);
+            } catch (e) {
+                // mark as not found to avoid repeating expensive file require call causing high CPU
+                // when trying to find en-US, en_US, en-us for every format call
+                locales[name] = null; // null means not found
+            }
+        }
+        return locales[name];
+    }
+
+    // This function will load locale and then set the global locale.  If
+    // no arguments are passed in, it will simply return the current global
+    // locale key.
+    function getSetGlobalLocale(key, values) {
+        var data;
+        if (key) {
+            if (isUndefined(values)) {
+                data = getLocale(key);
+            } else {
+                data = defineLocale(key, values);
+            }
+
+            if (data) {
+                // moment.duration._locale = moment._locale = data;
+                globalLocale = data;
+            } else {
+                if (typeof console !== 'undefined' && console.warn) {
+                    //warn user if arguments are passed but the locale could not be set
+                    console.warn(
+                        'Locale ' + key + ' not found. Did you forget to load it?'
+                    );
+                }
+            }
+        }
+
+        return globalLocale._abbr;
+    }
+
+    function defineLocale(name, config) {
+        if (config !== null) {
+            var locale,
+                parentConfig = baseConfig;
+            config.abbr = name;
+            if (locales[name] != null) {
+                deprecateSimple(
+                    'defineLocaleOverride',
+                    'use moment.updateLocale(localeName, config) to change ' +
+                        'an existing locale. moment.defineLocale(localeName, ' +
+                        'config) should only be used for creating a new locale ' +
+                        'See http://momentjs.com/guides/#/warnings/define-locale/ for more info.'
+                );
+                parentConfig = locales[name]._config;
+            } else if (config.parentLocale != null) {
+                if (locales[config.parentLocale] != null) {
+                    parentConfig = locales[config.parentLocale]._config;
+                } else {
+                    locale = loadLocale(config.parentLocale);
+                    if (locale != null) {
+                        parentConfig = locale._config;
+                    } else {
+                        if (!localeFamilies[config.parentLocale]) {
+                            localeFamilies[config.parentLocale] = [];
+                        }
+                        localeFamilies[config.parentLocale].push({
+                            name: name,
+                            config: config,
+                        });
+                        return null;
+                    }
+                }
+            }
+            locales[name] = new Locale(mergeConfigs(parentConfig, config));
+
+            if (localeFamilies[name]) {
+                localeFamilies[name].forEach(function (x) {
+                    defineLocale(x.name, x.config);
+                });
+            }
+
+            // backwards compat for now: also set the locale
+            // make sure we set the locale AFTER all child locales have been
+            // created, so we won't end up with the child locale set.
+            getSetGlobalLocale(name);
+
+            return locales[name];
+        } else {
+            // useful for testing
+            delete locales[name];
+            return null;
+        }
+    }
+
+    function updateLocale(name, config) {
+        if (config != null) {
+            var locale,
+                tmpLocale,
+                parentConfig = baseConfig;
+
+            if (locales[name] != null && locales[name].parentLocale != null) {
+                // Update existing child locale in-place to avoid memory-leaks
+                locales[name].set(mergeConfigs(locales[name]._config, config));
+            } else {
+                // MERGE
+                tmpLocale = loadLocale(name);
+                if (tmpLocale != null) {
+                    parentConfig = tmpLocale._config;
+                }
+                config = mergeConfigs(parentConfig, config);
+                if (tmpLocale == null) {
+                    // updateLocale is called for creating a new locale
+                    // Set abbr so it will have a name (getters return
+                    // undefined otherwise).
+                    config.abbr = name;
+                }
+                locale = new Locale(config);
+                locale.parentLocale = locales[name];
+                locales[name] = locale;
+            }
+
+            // backwards compat for now: also set the locale
+            getSetGlobalLocale(name);
+        } else {
+            // pass null for config to unupdate, useful for tests
+            if (locales[name] != null) {
+                if (locales[name].parentLocale != null) {
+                    locales[name] = locales[name].parentLocale;
+                    if (name === getSetGlobalLocale()) {
+                        getSetGlobalLocale(name);
+                    }
+                } else if (locales[name] != null) {
+                    delete locales[name];
+                }
+            }
+        }
+        return locales[name];
+    }
+
+    // returns locale data
+    function getLocale(key) {
+        var locale;
+
+        if (key && key._locale && key._locale._abbr) {
+            key = key._locale._abbr;
+        }
+
+        if (!key) {
+            return globalLocale;
+        }
+
+        if (!isArray(key)) {
+            //short-circuit everything else
+            locale = loadLocale(key);
+            if (locale) {
+                return locale;
+            }
+            key = [key];
+        }
+
+        return chooseLocale(key);
+    }
+
+    function listLocales() {
+        return keys(locales);
+    }
+
+    function checkOverflow(m) {
+        var overflow,
+            a = m._a;
+
+        if (a && getParsingFlags(m).overflow === -2) {
+            overflow =
+                a[MONTH] < 0 || a[MONTH] > 11
+                    ? MONTH
+                    : a[DATE] < 1 || a[DATE] > daysInMonth(a[YEAR], a[MONTH])
+                    ? DATE
+                    : a[HOUR] < 0 ||
+                      a[HOUR] > 24 ||
+                      (a[HOUR] === 24 &&
+                          (a[MINUTE] !== 0 ||
+                              a[SECOND] !== 0 ||
+                              a[MILLISECOND] !== 0))
+                    ? HOUR
+                    : a[MINUTE] < 0 || a[MINUTE] > 59
+                    ? MINUTE
+                    : a[SECOND] < 0 || a[SECOND] > 59
+                    ? SECOND
+                    : a[MILLISECOND] < 0 || a[MILLISECOND] > 999
+                    ? MILLISECOND
+                    : -1;
+
+            if (
+                getParsingFlags(m)._overflowDayOfYear &&
+                (overflow < YEAR || overflow > DATE)
+            ) {
+                overflow = DATE;
+            }
+            if (getParsingFlags(m)._overflowWeeks && overflow === -1) {
+                overflow = WEEK;
+            }
+            if (getParsingFlags(m)._overflowWeekday && overflow === -1) {
+                overflow = WEEKDAY;
+            }
+
+            getParsingFlags(m).overflow = overflow;
+        }
+
+        return m;
+    }
+
+    // iso 8601 regex
+    // 0000-00-00 0000-W00 or 0000-W00-0 + T + 00 or 00:00 or 00:00:00 or 00:00:00.000 + +00:00 or +0000 or +00)
+    var extendedIsoRegex =
+            /^\s*((?:[+-]\d{6}|\d{4})-(?:\d\d-\d\d|W\d\d-\d|W\d\d|\d\d\d|\d\d))(?:(T| )(\d\d(?::\d\d(?::\d\d(?:[.,]\d+)?)?)?)([+-]\d\d(?::?\d\d)?|\s*Z)?)?$/,
+        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)?)?$/,
+        tzRegex = /Z|[+-]\d\d(?::?\d\d)?/,
+        isoDates = [
+            ['YYYYYY-MM-DD', /[+-]\d{6}-\d\d-\d\d/],
+            ['YYYY-MM-DD', /\d{4}-\d\d-\d\d/],
+            ['GGGG-[W]WW-E', /\d{4}-W\d\d-\d/],
+            ['GGGG-[W]WW', /\d{4}-W\d\d/, false],
+            ['YYYY-DDD', /\d{4}-\d{3}/],
+            ['YYYY-MM', /\d{4}-\d\d/, false],
+            ['YYYYYYMMDD', /[+-]\d{10}/],
+            ['YYYYMMDD', /\d{8}/],
+            ['GGGG[W]WWE', /\d{4}W\d{3}/],
+            ['GGGG[W]WW', /\d{4}W\d{2}/, false],
+            ['YYYYDDD', /\d{7}/],
+            ['YYYYMM', /\d{6}/, false],
+            ['YYYY', /\d{4}/, false],
+        ],
+        // iso time formats and regexes
+        isoTimes = [
+            ['HH:mm:ss.SSSS', /\d\d:\d\d:\d\d\.\d+/],
+            ['HH:mm:ss,SSSS', /\d\d:\d\d:\d\d,\d+/],
+            ['HH:mm:ss', /\d\d:\d\d:\d\d/],
+            ['HH:mm', /\d\d:\d\d/],
+            ['HHmmss.SSSS', /\d\d\d\d\d\d\.\d+/],
+            ['HHmmss,SSSS', /\d\d\d\d\d\d,\d+/],
+            ['HHmmss', /\d\d\d\d\d\d/],
+            ['HHmm', /\d\d\d\d/],
+            ['HH', /\d\d/],
+        ],
+        aspNetJsonRegex = /^\/?Date\((-?\d+)/i,
+        // RFC 2822 regex: For details see https://tools.ietf.org/html/rfc2822#section-3.3
+        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}))$/,
+        obsOffsets = {
+            UT: 0,
+            GMT: 0,
+            EDT: -4 * 60,
+            EST: -5 * 60,
+            CDT: -5 * 60,
+            CST: -6 * 60,
+            MDT: -6 * 60,
+            MST: -7 * 60,
+            PDT: -7 * 60,
+            PST: -8 * 60,
+        };
+
+    // date from iso format
+    function configFromISO(config) {
+        var i,
+            l,
+            string = config._i,
+            match = extendedIsoRegex.exec(string) || basicIsoRegex.exec(string),
+            allowTime,
+            dateFormat,
+            timeFormat,
+            tzFormat,
+            isoDatesLen = isoDates.length,
+            isoTimesLen = isoTimes.length;
+
+        if (match) {
+            getParsingFlags(config).iso = true;
+            for (i = 0, l = isoDatesLen; i < l; i++) {
+                if (isoDates[i][1].exec(match[1])) {
+                    dateFormat = isoDates[i][0];
+                    allowTime = isoDates[i][2] !== false;
+                    break;
+                }
+            }
+            if (dateFormat == null) {
+                config._isValid = false;
+                return;
+            }
+            if (match[3]) {
+                for (i = 0, l = isoTimesLen; i < l; i++) {
+                    if (isoTimes[i][1].exec(match[3])) {
+                        // match[2] should be 'T' or space
+                        timeFormat = (match[2] || ' ') + isoTimes[i][0];
+                        break;
+                    }
+                }
+                if (timeFormat == null) {
+                    config._isValid = false;
+                    return;
+                }
+            }
+            if (!allowTime && timeFormat != null) {
+                config._isValid = false;
+                return;
+            }
+            if (match[4]) {
+                if (tzRegex.exec(match[4])) {
+                    tzFormat = 'Z';
+                } else {
+                    config._isValid = false;
+                    return;
+                }
+            }
+            config._f = dateFormat + (timeFormat || '') + (tzFormat || '');
+            configFromStringAndFormat(config);
+        } else {
+            config._isValid = false;
+        }
+    }
+
+    function extractFromRFC2822Strings(
+        yearStr,
+        monthStr,
+        dayStr,
+        hourStr,
+        minuteStr,
+        secondStr
+    ) {
+        var result = [
+            untruncateYear(yearStr),
+            defaultLocaleMonthsShort.indexOf(monthStr),
+            parseInt(dayStr, 10),
+            parseInt(hourStr, 10),
+            parseInt(minuteStr, 10),
+        ];
+
+        if (secondStr) {
+            result.push(parseInt(secondStr, 10));
+        }
+
+        return result;
+    }
+
+    function untruncateYear(yearStr) {
+        var year = parseInt(yearStr, 10);
+        if (year <= 49) {
+            return 2000 + year;
+        } else if (year <= 999) {
+            return 1900 + year;
+        }
+        return year;
+    }
+
+    function preprocessRFC2822(s) {
+        // Remove comments and folding whitespace and replace multiple-spaces with a single space
+        return s
+            .replace(/\([^)]*\)|[\n\t]/g, ' ')
+            .replace(/(\s\s+)/g, ' ')
+            .replace(/^\s\s*/, '')
+            .replace(/\s\s*$/, '');
+    }
+
+    function checkWeekday(weekdayStr, parsedInput, config) {
+        if (weekdayStr) {
+            // TODO: Replace the vanilla JS Date object with an independent day-of-week check.
+            var weekdayProvided = defaultLocaleWeekdaysShort.indexOf(weekdayStr),
+                weekdayActual = new Date(
+                    parsedInput[0],
+                    parsedInput[1],
+                    parsedInput[2]
+                ).getDay();
+            if (weekdayProvided !== weekdayActual) {
+                getParsingFlags(config).weekdayMismatch = true;
+                config._isValid = false;
+                return false;
+            }
+        }
+        return true;
+    }
+
+    function calculateOffset(obsOffset, militaryOffset, numOffset) {
+        if (obsOffset) {
+            return obsOffsets[obsOffset];
+        } else if (militaryOffset) {
+            // the only allowed military tz is Z
+            return 0;
+        } else {
+            var hm = parseInt(numOffset, 10),
+                m = hm % 100,
+                h = (hm - m) / 100;
+            return h * 60 + m;
+        }
+    }
+
+    // date and time from ref 2822 format
+    function configFromRFC2822(config) {
+        var match = rfc2822.exec(preprocessRFC2822(config._i)),
+            parsedArray;
+        if (match) {
+            parsedArray = extractFromRFC2822Strings(
+                match[4],
+                match[3],
+                match[2],
+                match[5],
+                match[6],
+                match[7]
+            );
+            if (!checkWeekday(match[1], parsedArray, config)) {
+                return;
+            }
+
+            config._a = parsedArray;
+            config._tzm = calculateOffset(match[8], match[9], match[10]);
+
+            config._d = createUTCDate.apply(null, config._a);
+            config._d.setUTCMinutes(config._d.getUTCMinutes() - config._tzm);
+
+            getParsingFlags(config).rfc2822 = true;
+        } else {
+            config._isValid = false;
+        }
+    }
+
+    // date from 1) ASP.NET, 2) ISO, 3) RFC 2822 formats, or 4) optional fallback if parsing isn't strict
+    function configFromString(config) {
+        var matched = aspNetJsonRegex.exec(config._i);
+        if (matched !== null) {
+            config._d = new Date(+matched[1]);
+            return;
+        }
+
+        configFromISO(config);
+        if (config._isValid === false) {
+            delete config._isValid;
+        } else {
+            return;
+        }
+
+        configFromRFC2822(config);
+        if (config._isValid === false) {
+            delete config._isValid;
+        } else {
+            return;
+        }
+
+        if (config._strict) {
+            config._isValid = false;
+        } else {
+            // Final attempt, use Input Fallback
+            hooks.createFromInputFallback(config);
+        }
+    }
+
+    hooks.createFromInputFallback = deprecate(
+        'value provided is not in a recognized RFC2822 or ISO format. moment construction falls back to js Date(), ' +
+            'which is not reliable across all browsers and versions. Non RFC2822/ISO date formats are ' +
+            'discouraged. Please refer to http://momentjs.com/guides/#/warnings/js-date/ for more info.',
+        function (config) {
+            config._d = new Date(config._i + (config._useUTC ? ' UTC' : ''));
+        }
+    );
+
+    // Pick the first defined of two or three arguments.
+    function defaults(a, b, c) {
+        if (a != null) {
+            return a;
+        }
+        if (b != null) {
+            return b;
+        }
+        return c;
+    }
+
+    function currentDateArray(config) {
+        // hooks is actually the exported moment object
+        var nowValue = new Date(hooks.now());
+        if (config._useUTC) {
+            return [
+                nowValue.getUTCFullYear(),
+                nowValue.getUTCMonth(),
+                nowValue.getUTCDate(),
+            ];
+        }
+        return [nowValue.getFullYear(), nowValue.getMonth(), nowValue.getDate()];
+    }
+
+    // convert an array to a date.
+    // the array should mirror the parameters below
+    // note: all values past the year are optional and will default to the lowest possible value.
+    // [year, month, day , hour, minute, second, millisecond]
+    function configFromArray(config) {
+        var i,
+            date,
+            input = [],
+            currentDate,
+            expectedWeekday,
+            yearToUse;
+
+        if (config._d) {
+            return;
+        }
+
+        currentDate = currentDateArray(config);
+
+        //compute day of the year from weeks and weekdays
+        if (config._w && config._a[DATE] == null && config._a[MONTH] == null) {
+            dayOfYearFromWeekInfo(config);
+        }
+
+        //if the day of the year is set, figure out what it is
+        if (config._dayOfYear != null) {
+            yearToUse = defaults(config._a[YEAR], currentDate[YEAR]);
+
+            if (
+                config._dayOfYear > daysInYear(yearToUse) ||
+                config._dayOfYear === 0
+            ) {
+                getParsingFlags(config)._overflowDayOfYear = true;
+            }
+
+            date = createUTCDate(yearToUse, 0, config._dayOfYear);
+            config._a[MONTH] = date.getUTCMonth();
+            config._a[DATE] = date.getUTCDate();
+        }
+
+        // Default to current date.
+        // * if no year, month, day of month are given, default to today
+        // * if day of month is given, default month and year
+        // * if month is given, default only year
+        // * if year is given, don't default anything
+        for (i = 0; i < 3 && config._a[i] == null; ++i) {
+            config._a[i] = input[i] = currentDate[i];
+        }
+
+        // Zero out whatever was not defaulted, including time
+        for (; i < 7; i++) {
+            config._a[i] = input[i] =
+                config._a[i] == null ? (i === 2 ? 1 : 0) : config._a[i];
+        }
+
+        // Check for 24:00:00.000
+        if (
+            config._a[HOUR] === 24 &&
+            config._a[MINUTE] === 0 &&
+            config._a[SECOND] === 0 &&
+            config._a[MILLISECOND] === 0
+        ) {
+            config._nextDay = true;
+            config._a[HOUR] = 0;
+        }
+
+        config._d = (config._useUTC ? createUTCDate : createDate).apply(
+            null,
+            input
+        );
+        expectedWeekday = config._useUTC
+            ? config._d.getUTCDay()
+            : config._d.getDay();
+
+        // Apply timezone offset from input. The actual utcOffset can be changed
+        // with parseZone.
+        if (config._tzm != null) {
+            config._d.setUTCMinutes(config._d.getUTCMinutes() - config._tzm);
+        }
+
+        if (config._nextDay) {
+            config._a[HOUR] = 24;
+        }
+
+        // check for mismatching day of week
+        if (
+            config._w &&
+            typeof config._w.d !== 'undefined' &&
+            config._w.d !== expectedWeekday
+        ) {
+            getParsingFlags(config).weekdayMismatch = true;
+        }
+    }
+
+    function dayOfYearFromWeekInfo(config) {
+        var w, weekYear, week, weekday, dow, doy, temp, weekdayOverflow, curWeek;
+
+        w = config._w;
+        if (w.GG != null || w.W != null || w.E != null) {
+            dow = 1;
+            doy = 4;
+
+            // TODO: We need to take the current isoWeekYear, but that depends on
+            // how we interpret now (local, utc, fixed offset). So create
+            // a now version of current config (take local/utc/offset flags, and
+            // create now).
+            weekYear = defaults(
+                w.GG,
+                config._a[YEAR],
+                weekOfYear(createLocal(), 1, 4).year
+            );
+            week = defaults(w.W, 1);
+            weekday = defaults(w.E, 1);
+            if (weekday < 1 || weekday > 7) {
+                weekdayOverflow = true;
+            }
+        } else {
+            dow = config._locale._week.dow;
+            doy = config._locale._week.doy;
+
+            curWeek = weekOfYear(createLocal(), dow, doy);
+
+            weekYear = defaults(w.gg, config._a[YEAR], curWeek.year);
+
+            // Default to current week.
+            week = defaults(w.w, curWeek.week);
+
+            if (w.d != null) {
+                // weekday -- low day numbers are considered next week
+                weekday = w.d;
+                if (weekday < 0 || weekday > 6) {
+                    weekdayOverflow = true;
+                }
+            } else if (w.e != null) {
+                // local weekday -- counting starts from beginning of week
+                weekday = w.e + dow;
+                if (w.e < 0 || w.e > 6) {
+                    weekdayOverflow = true;
+                }
+            } else {
+                // default to beginning of week
+                weekday = dow;
+            }
+        }
+        if (week < 1 || week > weeksInYear(weekYear, dow, doy)) {
+            getParsingFlags(config)._overflowWeeks = true;
+        } else if (weekdayOverflow != null) {
+            getParsingFlags(config)._overflowWeekday = true;
+        } else {
+            temp = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy);
+            config._a[YEAR] = temp.year;
+            config._dayOfYear = temp.dayOfYear;
+        }
+    }
+
+    // constant that refers to the ISO standard
+    hooks.ISO_8601 = function () {};
+
+    // constant that refers to the RFC 2822 form
+    hooks.RFC_2822 = function () {};
+
+    // date from string and format string
+    function configFromStringAndFormat(config) {
+        // TODO: Move this to another part of the creation flow to prevent circular deps
+        if (config._f === hooks.ISO_8601) {
+            configFromISO(config);
+            return;
+        }
+        if (config._f === hooks.RFC_2822) {
+            configFromRFC2822(config);
+            return;
+        }
+        config._a = [];
+        getParsingFlags(config).empty = true;
+
+        // This array is used to make a Date, either with `new Date` or `Date.UTC`
+        var string = '' + config._i,
+            i,
+            parsedInput,
+            tokens,
+            token,
+            skipped,
+            stringLength = string.length,
+            totalParsedInputLength = 0,
+            era,
+            tokenLen;
+
+        tokens =
+            expandFormat(config._f, config._locale).match(formattingTokens) || [];
+        tokenLen = tokens.length;
+        for (i = 0; i < tokenLen; i++) {
+            token = tokens[i];
+            parsedInput = (string.match(getParseRegexForToken(token, config)) ||
+                [])[0];
+            if (parsedInput) {
+                skipped = string.substr(0, string.indexOf(parsedInput));
+                if (skipped.length > 0) {
+                    getParsingFlags(config).unusedInput.push(skipped);
+                }
+                string = string.slice(
+                    string.indexOf(parsedInput) + parsedInput.length
+                );
+                totalParsedInputLength += parsedInput.length;
+            }
+            // don't parse if it's not a known token
+            if (formatTokenFunctions[token]) {
+                if (parsedInput) {
+                    getParsingFlags(config).empty = false;
+                } else {
+                    getParsingFlags(config).unusedTokens.push(token);
+                }
+                addTimeToArrayFromToken(token, parsedInput, config);
+            } else if (config._strict && !parsedInput) {
+                getParsingFlags(config).unusedTokens.push(token);
+            }
+        }
+
+        // add remaining unparsed input length to the string
+        getParsingFlags(config).charsLeftOver =
+            stringLength - totalParsedInputLength;
+        if (string.length > 0) {
+            getParsingFlags(config).unusedInput.push(string);
+        }
+
+        // clear _12h flag if hour is <= 12
+        if (
+            config._a[HOUR] <= 12 &&
+            getParsingFlags(config).bigHour === true &&
+            config._a[HOUR] > 0
+        ) {
+            getParsingFlags(config).bigHour = undefined;
+        }
+
+        getParsingFlags(config).parsedDateParts = config._a.slice(0);
+        getParsingFlags(config).meridiem = config._meridiem;
+        // handle meridiem
+        config._a[HOUR] = meridiemFixWrap(
+            config._locale,
+            config._a[HOUR],
+            config._meridiem
+        );
+
+        // handle era
+        era = getParsingFlags(config).era;
+        if (era !== null) {
+            config._a[YEAR] = config._locale.erasConvertYear(era, config._a[YEAR]);
+        }
+
+        configFromArray(config);
+        checkOverflow(config);
+    }
+
+    function meridiemFixWrap(locale, hour, meridiem) {
+        var isPm;
+
+        if (meridiem == null) {
+            // nothing to do
+            return hour;
+        }
+        if (locale.meridiemHour != null) {
+            return locale.meridiemHour(hour, meridiem);
+        } else if (locale.isPM != null) {
+            // Fallback
+            isPm = locale.isPM(meridiem);
+            if (isPm && hour < 12) {
+                hour += 12;
+            }
+            if (!isPm && hour === 12) {
+                hour = 0;
+            }
+            return hour;
+        } else {
+            // this is not supposed to happen
+            return hour;
+        }
+    }
+
+    // date from string and array of format strings
+    function configFromStringAndArray(config) {
+        var tempConfig,
+            bestMoment,
+            scoreToBeat,
+            i,
+            currentScore,
+            validFormatFound,
+            bestFormatIsValid = false,
+            configfLen = config._f.length;
+
+        if (configfLen === 0) {
+            getParsingFlags(config).invalidFormat = true;
+            config._d = new Date(NaN);
+            return;
+        }
+
+        for (i = 0; i < configfLen; i++) {
+            currentScore = 0;
+            validFormatFound = false;
+            tempConfig = copyConfig({}, config);
+            if (config._useUTC != null) {
+                tempConfig._useUTC = config._useUTC;
+            }
+            tempConfig._f = config._f[i];
+            configFromStringAndFormat(tempConfig);
+
+            if (isValid(tempConfig)) {
+                validFormatFound = true;
+            }
+
+            // if there is any input that was not parsed add a penalty for that format
+            currentScore += getParsingFlags(tempConfig).charsLeftOver;
+
+            //or tokens
+            currentScore += getParsingFlags(tempConfig).unusedTokens.length * 10;
+
+            getParsingFlags(tempConfig).score = currentScore;
+
+            if (!bestFormatIsValid) {
+                if (
+                    scoreToBeat == null ||
+                    currentScore < scoreToBeat ||
+                    validFormatFound
+                ) {
+                    scoreToBeat = currentScore;
+                    bestMoment = tempConfig;
+                    if (validFormatFound) {
+                        bestFormatIsValid = true;
+                    }
+                }
+            } else {
+                if (currentScore < scoreToBeat) {
+                    scoreToBeat = currentScore;
+                    bestMoment = tempConfig;
+                }
+            }
+        }
+
+        extend(config, bestMoment || tempConfig);
+    }
+
+    function configFromObject(config) {
+        if (config._d) {
+            return;
+        }
+
+        var i = normalizeObjectUnits(config._i),
+            dayOrDate = i.day === undefined ? i.date : i.day;
+        config._a = map(
+            [i.year, i.month, dayOrDate, i.hour, i.minute, i.second, i.millisecond],
+            function (obj) {
+                return obj && parseInt(obj, 10);
+            }
+        );
+
+        configFromArray(config);
+    }
+
+    function createFromConfig(config) {
+        var res = new Moment(checkOverflow(prepareConfig(config)));
+        if (res._nextDay) {
+            // Adding is smart enough around DST
+            res.add(1, 'd');
+            res._nextDay = undefined;
+        }
+
+        return res;
+    }
+
+    function prepareConfig(config) {
+        var input = config._i,
+            format = config._f;
+
+        config._locale = config._locale || getLocale(config._l);
+
+        if (input === null || (format === undefined && input === '')) {
+            return createInvalid({ nullInput: true });
+        }
+
+        if (typeof input === 'string') {
+            config._i = input = config._locale.preparse(input);
+        }
+
+        if (isMoment(input)) {
+            return new Moment(checkOverflow(input));
+        } else if (isDate(input)) {
+            config._d = input;
+        } else if (isArray(format)) {
+            configFromStringAndArray(config);
+        } else if (format) {
+            configFromStringAndFormat(config);
+        } else {
+            configFromInput(config);
+        }
+
+        if (!isValid(config)) {
+            config._d = null;
+        }
+
+        return config;
+    }
+
+    function configFromInput(config) {
+        var input = config._i;
+        if (isUndefined(input)) {
+            config._d = new Date(hooks.now());
+        } else if (isDate(input)) {
+            config._d = new Date(input.valueOf());
+        } else if (typeof input === 'string') {
+            configFromString(config);
+        } else if (isArray(input)) {
+            config._a = map(input.slice(0), function (obj) {
+                return parseInt(obj, 10);
+            });
+            configFromArray(config);
+        } else if (isObject(input)) {
+            configFromObject(config);
+        } else if (isNumber(input)) {
+            // from milliseconds
+            config._d = new Date(input);
+        } else {
+            hooks.createFromInputFallback(config);
+        }
+    }
+
+    function createLocalOrUTC(input, format, locale, strict, isUTC) {
+        var c = {};
+
+        if (format === true || format === false) {
+            strict = format;
+            format = undefined;
+        }
+
+        if (locale === true || locale === false) {
+            strict = locale;
+            locale = undefined;
+        }
+
+        if (
+            (isObject(input) && isObjectEmpty(input)) ||
+            (isArray(input) && input.length === 0)
+        ) {
+            input = undefined;
+        }
+        // object construction must be done this way.
+        // https://github.com/moment/moment/issues/1423
+        c._isAMomentObject = true;
+        c._useUTC = c._isUTC = isUTC;
+        c._l = locale;
+        c._i = input;
+        c._f = format;
+        c._strict = strict;
+
+        return createFromConfig(c);
+    }
+
+    function createLocal(input, format, locale, strict) {
+        return createLocalOrUTC(input, format, locale, strict, false);
+    }
+
+    var prototypeMin = deprecate(
+            'moment().min is deprecated, use moment.max instead. http://momentjs.com/guides/#/warnings/min-max/',
+            function () {
+                var other = createLocal.apply(null, arguments);
+                if (this.isValid() && other.isValid()) {
+                    return other < this ? this : other;
+                } else {
+                    return createInvalid();
+                }
+            }
+        ),
+        prototypeMax = deprecate(
+            'moment().max is deprecated, use moment.min instead. http://momentjs.com/guides/#/warnings/min-max/',
+            function () {
+                var other = createLocal.apply(null, arguments);
+                if (this.isValid() && other.isValid()) {
+                    return other > this ? this : other;
+                } else {
+                    return createInvalid();
+                }
+            }
+        );
+
+    // Pick a moment m from moments so that m[fn](other) is true for all
+    // other. This relies on the function fn to be transitive.
+    //
+    // moments should either be an array of moment objects or an array, whose
+    // first element is an array of moment objects.
+    function pickBy(fn, moments) {
+        var res, i;
+        if (moments.length === 1 && isArray(moments[0])) {
+            moments = moments[0];
+        }
+        if (!moments.length) {
+            return createLocal();
+        }
+        res = moments[0];
+        for (i = 1; i < moments.length; ++i) {
+            if (!moments[i].isValid() || moments[i][fn](res)) {
+                res = moments[i];
+            }
+        }
+        return res;
+    }
+
+    // TODO: Use [].sort instead?
+    function min() {
+        var args = [].slice.call(arguments, 0);
+
+        return pickBy('isBefore', args);
+    }
+
+    function max() {
+        var args = [].slice.call(arguments, 0);
+
+        return pickBy('isAfter', args);
+    }
+
+    var now = function () {
+        return Date.now ? Date.now() : +new Date();
+    };
+
+    var ordering = [
+        'year',
+        'quarter',
+        'month',
+        'week',
+        'day',
+        'hour',
+        'minute',
+        'second',
+        'millisecond',
+    ];
+
+    function isDurationValid(m) {
+        var key,
+            unitHasDecimal = false,
+            i,
+            orderLen = ordering.length;
+        for (key in m) {
+            if (
+                hasOwnProp(m, key) &&
+                !(
+                    indexOf.call(ordering, key) !== -1 &&
+                    (m[key] == null || !isNaN(m[key]))
+                )
+            ) {
+                return false;
+            }
+        }
+
+        for (i = 0; i < orderLen; ++i) {
+            if (m[ordering[i]]) {
+                if (unitHasDecimal) {
+                    return false; // only allow non-integers for smallest unit
+                }
+                if (parseFloat(m[ordering[i]]) !== toInt(m[ordering[i]])) {
+                    unitHasDecimal = true;
+                }
+            }
+        }
+
+        return true;
+    }
+
+    function isValid$1() {
+        return this._isValid;
+    }
+
+    function createInvalid$1() {
+        return createDuration(NaN);
+    }
+
+    function Duration(duration) {
+        var normalizedInput = normalizeObjectUnits(duration),
+            years = normalizedInput.year || 0,
+            quarters = normalizedInput.quarter || 0,
+            months = normalizedInput.month || 0,
+            weeks = normalizedInput.week || normalizedInput.isoWeek || 0,
+            days = normalizedInput.day || 0,
+            hours = normalizedInput.hour || 0,
+            minutes = normalizedInput.minute || 0,
+            seconds = normalizedInput.second || 0,
+            milliseconds = normalizedInput.millisecond || 0;
+
+        this._isValid = isDurationValid(normalizedInput);
+
+        // representation for dateAddRemove
+        this._milliseconds =
+            +milliseconds +
+            seconds * 1e3 + // 1000
+            minutes * 6e4 + // 1000 * 60
+            hours * 1000 * 60 * 60; //using 1000 * 60 * 60 instead of 36e5 to avoid floating point rounding errors https://github.com/moment/moment/issues/2978
+        // Because of dateAddRemove treats 24 hours as different from a
+        // day when working around DST, we need to store them separately
+        this._days = +days + weeks * 7;
+        // It is impossible to translate months into days without knowing
+        // which months you are are talking about, so we have to store
+        // it separately.
+        this._months = +months + quarters * 3 + years * 12;
+
+        this._data = {};
+
+        this._locale = getLocale();
+
+        this._bubble();
+    }
+
+    function isDuration(obj) {
+        return obj instanceof Duration;
+    }
+
+    function absRound(number) {
+        if (number < 0) {
+            return Math.round(-1 * number) * -1;
+        } else {
+            return Math.round(number);
+        }
+    }
+
+    // compare two arrays, return the number of differences
+    function compareArrays(array1, array2, dontConvert) {
+        var len = Math.min(array1.length, array2.length),
+            lengthDiff = Math.abs(array1.length - array2.length),
+            diffs = 0,
+            i;
+        for (i = 0; i < len; i++) {
+            if (
+                (dontConvert && array1[i] !== array2[i]) ||
+                (!dontConvert && toInt(array1[i]) !== toInt(array2[i]))
+            ) {
+                diffs++;
+            }
+        }
+        return diffs + lengthDiff;
+    }
+
+    // FORMATTING
+
+    function offset(token, separator) {
+        addFormatToken(token, 0, 0, function () {
+            var offset = this.utcOffset(),
+                sign = '+';
+            if (offset < 0) {
+                offset = -offset;
+                sign = '-';
+            }
+            return (
+                sign +
+                zeroFill(~~(offset / 60), 2) +
+                separator +
+                zeroFill(~~offset % 60, 2)
+            );
+        });
+    }
+
+    offset('Z', ':');
+    offset('ZZ', '');
+
+    // PARSING
+
+    addRegexToken('Z', matchShortOffset);
+    addRegexToken('ZZ', matchShortOffset);
+    addParseToken(['Z', 'ZZ'], function (input, array, config) {
+        config._useUTC = true;
+        config._tzm = offsetFromString(matchShortOffset, input);
+    });
+
+    // HELPERS
+
+    // timezone chunker
+    // '+10:00' > ['10',  '00']
+    // '-1530'  > ['-15', '30']
+    var chunkOffset = /([\+\-]|\d\d)/gi;
+
+    function offsetFromString(matcher, string) {
+        var matches = (string || '').match(matcher),
+            chunk,
+            parts,
+            minutes;
+
+        if (matches === null) {
+            return null;
+        }
+
+        chunk = matches[matches.length - 1] || [];
+        parts = (chunk + '').match(chunkOffset) || ['-', 0, 0];
+        minutes = +(parts[1] * 60) + toInt(parts[2]);
+
+        return minutes === 0 ? 0 : parts[0] === '+' ? minutes : -minutes;
+    }
+
+    // Return a moment from input, that is local/utc/zone equivalent to model.
+    function cloneWithOffset(input, model) {
+        var res, diff;
+        if (model._isUTC) {
+            res = model.clone();
+            diff =
+                (isMoment(input) || isDate(input)
+                    ? input.valueOf()
+                    : createLocal(input).valueOf()) - res.valueOf();
+            // Use low-level api, because this fn is low-level api.
+            res._d.setTime(res._d.valueOf() + diff);
+            hooks.updateOffset(res, false);
+            return res;
+        } else {
+            return createLocal(input).local();
+        }
+    }
+
+    function getDateOffset(m) {
+        // On Firefox.24 Date#getTimezoneOffset returns a floating point.
+        // https://github.com/moment/moment/pull/1871
+        return -Math.round(m._d.getTimezoneOffset());
+    }
+
+    // HOOKS
+
+    // This function will be called whenever a moment is mutated.
+    // It is intended to keep the offset in sync with the timezone.
+    hooks.updateOffset = function () {};
+
+    // MOMENTS
+
+    // keepLocalTime = true means only change the timezone, without
+    // affecting the local hour. So 5:31:26 +0300 --[utcOffset(2, true)]-->
+    // 5:31:26 +0200 It is possible that 5:31:26 doesn't exist with offset
+    // +0200, so we adjust the time as needed, to be valid.
+    //
+    // Keeping the time actually adds/subtracts (one hour)
+    // from the actual represented time. That is why we call updateOffset
+    // a second time. In case it wants us to change the offset again
+    // _changeInProgress == true case, then we have to adjust, because
+    // there is no such time in the given timezone.
+    function getSetOffset(input, keepLocalTime, keepMinutes) {
+        var offset = this._offset || 0,
+            localAdjust;
+        if (!this.isValid()) {
+            return input != null ? this : NaN;
+        }
+        if (input != null) {
+            if (typeof input === 'string') {
+                input = offsetFromString(matchShortOffset, input);
+                if (input === null) {
+                    return this;
+                }
+            } else if (Math.abs(input) < 16 && !keepMinutes) {
+                input = input * 60;
+            }
+            if (!this._isUTC && keepLocalTime) {
+                localAdjust = getDateOffset(this);
+            }
+            this._offset = input;
+            this._isUTC = true;
+            if (localAdjust != null) {
+                this.add(localAdjust, 'm');
+            }
+            if (offset !== input) {
+                if (!keepLocalTime || this._changeInProgress) {
+                    addSubtract(
+                        this,
+                        createDuration(input - offset, 'm'),
+                        1,
+                        false
+                    );
+                } else if (!this._changeInProgress) {
+                    this._changeInProgress = true;
+                    hooks.updateOffset(this, true);
+                    this._changeInProgress = null;
+                }
+            }
+            return this;
+        } else {
+            return this._isUTC ? offset : getDateOffset(this);
+        }
+    }
+
+    function getSetZone(input, keepLocalTime) {
+        if (input != null) {
+            if (typeof input !== 'string') {
+                input = -input;
+            }
+
+            this.utcOffset(input, keepLocalTime);
+
+            return this;
+        } else {
+            return -this.utcOffset();
+        }
+    }
+
+    function setOffsetToUTC(keepLocalTime) {
+        return this.utcOffset(0, keepLocalTime);
+    }
+
+    function setOffsetToLocal(keepLocalTime) {
+        if (this._isUTC) {
+            this.utcOffset(0, keepLocalTime);
+            this._isUTC = false;
+
+            if (keepLocalTime) {
+                this.subtract(getDateOffset(this), 'm');
+            }
+        }
+        return this;
+    }
+
+    function setOffsetToParsedOffset() {
+        if (this._tzm != null) {
+            this.utcOffset(this._tzm, false, true);
+        } else if (typeof this._i === 'string') {
+            var tZone = offsetFromString(matchOffset, this._i);
+            if (tZone != null) {
+                this.utcOffset(tZone);
+            } else {
+                this.utcOffset(0, true);
+            }
+        }
+        return this;
+    }
+
+    function hasAlignedHourOffset(input) {
+        if (!this.isValid()) {
+            return false;
+        }
+        input = input ? createLocal(input).utcOffset() : 0;
+
+        return (this.utcOffset() - input) % 60 === 0;
+    }
+
+    function isDaylightSavingTime() {
+        return (
+            this.utcOffset() > this.clone().month(0).utcOffset() ||
+            this.utcOffset() > this.clone().month(5).utcOffset()
+        );
+    }
+
+    function isDaylightSavingTimeShifted() {
+        if (!isUndefined(this._isDSTShifted)) {
+            return this._isDSTShifted;
+        }
+
+        var c = {},
+            other;
+
+        copyConfig(c, this);
+        c = prepareConfig(c);
+
+        if (c._a) {
+            other = c._isUTC ? createUTC(c._a) : createLocal(c._a);
+            this._isDSTShifted =
+                this.isValid() && compareArrays(c._a, other.toArray()) > 0;
+        } else {
+            this._isDSTShifted = false;
+        }
+
+        return this._isDSTShifted;
+    }
+
+    function isLocal() {
+        return this.isValid() ? !this._isUTC : false;
+    }
+
+    function isUtcOffset() {
+        return this.isValid() ? this._isUTC : false;
+    }
+
+    function isUtc() {
+        return this.isValid() ? this._isUTC && this._offset === 0 : false;
+    }
+
+    // ASP.NET json date format regex
+    var aspNetRegex = /^(-|\+)?(?:(\d*)[. ])?(\d+):(\d+)(?::(\d+)(\.\d*)?)?$/,
+        // from http://docs.closure-library.googlecode.com/git/closure_goog_date_date.js.source.html
+        // somewhat more in line with 4.4.3.2 2004 spec, but allows decimal anywhere
+        // and further modified to allow for strings containing both week and day
+        isoRegex =
+            /^(-|\+)?P(?:([-+]?[0-9,.]*)Y)?(?:([-+]?[0-9,.]*)M)?(?:([-+]?[0-9,.]*)W)?(?:([-+]?[0-9,.]*)D)?(?:T(?:([-+]?[0-9,.]*)H)?(?:([-+]?[0-9,.]*)M)?(?:([-+]?[0-9,.]*)S)?)?$/;
+
+    function createDuration(input, key) {
+        var duration = input,
+            // matching against regexp is expensive, do it on demand
+            match = null,
+            sign,
+            ret,
+            diffRes;
+
+        if (isDuration(input)) {
+            duration = {
+                ms: input._milliseconds,
+                d: input._days,
+                M: input._months,
+            };
+        } else if (isNumber(input) || !isNaN(+input)) {
+            duration = {};
+            if (key) {
+                duration[key] = +input;
+            } else {
+                duration.milliseconds = +input;
+            }
+        } else if ((match = aspNetRegex.exec(input))) {
+            sign = match[1] === '-' ? -1 : 1;
+            duration = {
+                y: 0,
+                d: toInt(match[DATE]) * sign,
+                h: toInt(match[HOUR]) * sign,
+                m: toInt(match[MINUTE]) * sign,
+                s: toInt(match[SECOND]) * sign,
+                ms: toInt(absRound(match[MILLISECOND] * 1000)) * sign, // the millisecond decimal point is included in the match
+            };
+        } else if ((match = isoRegex.exec(input))) {
+            sign = match[1] === '-' ? -1 : 1;
+            duration = {
+                y: parseIso(match[2], sign),
+                M: parseIso(match[3], sign),
+                w: parseIso(match[4], sign),
+                d: parseIso(match[5], sign),
+                h: parseIso(match[6], sign),
+                m: parseIso(match[7], sign),
+                s: parseIso(match[8], sign),
+            };
+        } else if (duration == null) {
+            // checks for null or undefined
+            duration = {};
+        } else if (
+            typeof duration === 'object' &&
+            ('from' in duration || 'to' in duration)
+        ) {
+            diffRes = momentsDifference(
+                createLocal(duration.from),
+                createLocal(duration.to)
+            );
+
+            duration = {};
+            duration.ms = diffRes.milliseconds;
+            duration.M = diffRes.months;
+        }
+
+        ret = new Duration(duration);
+
+        if (isDuration(input) && hasOwnProp(input, '_locale')) {
+            ret._locale = input._locale;
+        }
+
+        if (isDuration(input) && hasOwnProp(input, '_isValid')) {
+            ret._isValid = input._isValid;
+        }
+
+        return ret;
+    }
+
+    createDuration.fn = Duration.prototype;
+    createDuration.invalid = createInvalid$1;
+
+    function parseIso(inp, sign) {
+        // We'd normally use ~~inp for this, but unfortunately it also
+        // converts floats to ints.
+        // inp may be undefined, so careful calling replace on it.
+        var res = inp && parseFloat(inp.replace(',', '.'));
+        // apply sign while we're at it
+        return (isNaN(res) ? 0 : res) * sign;
+    }
+
+    function positiveMomentsDifference(base, other) {
+        var res = {};
+
+        res.months =
+            other.month() - base.month() + (other.year() - base.year()) * 12;
+        if (base.clone().add(res.months, 'M').isAfter(other)) {
+            --res.months;
+        }
+
+        res.milliseconds = +other - +base.clone().add(res.months, 'M');
+
+        return res;
+    }
+
+    function momentsDifference(base, other) {
+        var res;
+        if (!(base.isValid() && other.isValid())) {
+            return { milliseconds: 0, months: 0 };
+        }
+
+        other = cloneWithOffset(other, base);
+        if (base.isBefore(other)) {
+            res = positiveMomentsDifference(base, other);
+        } else {
+            res = positiveMomentsDifference(other, base);
+            res.milliseconds = -res.milliseconds;
+            res.months = -res.months;
+        }
+
+        return res;
+    }
+
+    // TODO: remove 'name' arg after deprecation is removed
+    function createAdder(direction, name) {
+        return function (val, period) {
+            var dur, tmp;
+            //invert the arguments, but complain about it
+            if (period !== null && !isNaN(+period)) {
+                deprecateSimple(
+                    name,
+                    'moment().' +
+                        name +
+                        '(period, number) is deprecated. Please use moment().' +
+                        name +
+                        '(number, period). ' +
+                        'See http://momentjs.com/guides/#/warnings/add-inverted-param/ for more info.'
+                );
+                tmp = val;
+                val = period;
+                period = tmp;
+            }
+
+            dur = createDuration(val, period);
+            addSubtract(this, dur, direction);
+            return this;
+        };
     }
 
-    // date from string and format string
-    function makeDateFromStringAndFormat(config) {
-        if (config._f === moment.ISO_8601) {
-            parseISO(config);
+    function addSubtract(mom, duration, isAdding, updateOffset) {
+        var milliseconds = duration._milliseconds,
+            days = absRound(duration._days),
+            months = absRound(duration._months);
+
+        if (!mom.isValid()) {
+            // No op
             return;
         }
 
-        config._a = [];
-        config._pf.empty = true;
-
-        // This array is used to make a Date, either with `new Date` or `Date.UTC`
-        var string = '' + config._i,
-            i, parsedInput, tokens, token, skipped,
-            stringLength = string.length,
-            totalParsedInputLength = 0;
-
-        tokens = expandFormat(config._f, config._locale).match(formattingTokens) || [];
+        updateOffset = updateOffset == null ? true : updateOffset;
 
-        for (i = 0; i < tokens.length; i++) {
-            token = tokens[i];
-            parsedInput = (string.match(getParseRegexForToken(token, config)) || [])[0];
-            if (parsedInput) {
-                skipped = string.substr(0, string.indexOf(parsedInput));
-                if (skipped.length > 0) {
-                    config._pf.unusedInput.push(skipped);
-                }
-                string = string.slice(string.indexOf(parsedInput) + parsedInput.length);
-                totalParsedInputLength += parsedInput.length;
-            }
-            // don't parse if it's not a known token
-            if (formatTokenFunctions[token]) {
-                if (parsedInput) {
-                    config._pf.empty = false;
-                }
-                else {
-                    config._pf.unusedTokens.push(token);
-                }
-                addTimeToArrayFromToken(token, parsedInput, config);
-            }
-            else if (config._strict && !parsedInput) {
-                config._pf.unusedTokens.push(token);
-            }
+        if (months) {
+            setMonth(mom, get(mom, 'Month') + months * isAdding);
         }
-
-        // add remaining unparsed input length to the string
-        config._pf.charsLeftOver = stringLength - totalParsedInputLength;
-        if (string.length > 0) {
-            config._pf.unusedInput.push(string);
+        if (days) {
+            set$1(mom, 'Date', get(mom, 'Date') + days * isAdding);
         }
-
-        // clear _12h flag if hour is <= 12
-        if (config._pf.bigHour === true && config._a[HOUR] <= 12) {
-            config._pf.bigHour = undefined;
+        if (milliseconds) {
+            mom._d.setTime(mom._d.valueOf() + milliseconds * isAdding);
+        }
+        if (updateOffset) {
+            hooks.updateOffset(mom, days || months);
         }
-        // handle meridiem
-        config._a[HOUR] = meridiemFixWrap(config._locale, config._a[HOUR],
-                config._meridiem);
-        dateFromConfig(config);
-        checkOverflow(config);
     }
 
-    function unescapeFormat(s) {
-        return s.replace(/\\(\[)|\\(\])|\[([^\]\[]*)\]|\\(.)/g, function (matched, p1, p2, p3, p4) {
-            return p1 || p2 || p3 || p4;
-        });
-    }
+    var add = createAdder(1, 'add'),
+        subtract = createAdder(-1, 'subtract');
 
-    // Code from http://stackoverflow.com/questions/3561493/is-there-a-regexp-escape-function-in-javascript
-    function regexpEscape(s) {
-        return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
+    function isString(input) {
+        return typeof input === 'string' || input instanceof String;
     }
 
-    // date from string and array of format strings
-    function makeDateFromStringAndArray(config) {
-        var tempConfig,
-            bestMoment,
+    // type MomentInput = Moment | Date | string | number | (number | string)[] | MomentInputObject | void; // null | undefined
+    function isMomentInput(input) {
+        return (
+            isMoment(input) ||
+            isDate(input) ||
+            isString(input) ||
+            isNumber(input) ||
+            isNumberOrStringArray(input) ||
+            isMomentInputObject(input) ||
+            input === null ||
+            input === undefined
+        );
+    }
 
-            scoreToBeat,
+    function isMomentInputObject(input) {
+        var objectTest = isObject(input) && !isObjectEmpty(input),
+            propertyTest = false,
+            properties = [
+                'years',
+                'year',
+                'y',
+                'months',
+                'month',
+                'M',
+                'days',
+                'day',
+                'd',
+                'dates',
+                'date',
+                'D',
+                'hours',
+                'hour',
+                'h',
+                'minutes',
+                'minute',
+                'm',
+                'seconds',
+                'second',
+                's',
+                'milliseconds',
+                'millisecond',
+                'ms',
+            ],
             i,
-            currentScore;
+            property,
+            propertyLen = properties.length;
 
-        if (config._f.length === 0) {
-            config._pf.invalidFormat = true;
-            config._d = new Date(NaN);
-            return;
+        for (i = 0; i < propertyLen; i += 1) {
+            property = properties[i];
+            propertyTest = propertyTest || hasOwnProp(input, property);
         }
 
-        for (i = 0; i < config._f.length; i++) {
-            currentScore = 0;
-            tempConfig = copyConfig({}, config);
-            if (config._useUTC != null) {
-                tempConfig._useUTC = config._useUTC;
-            }
-            tempConfig._pf = defaultParsingFlags();
-            tempConfig._f = config._f[i];
-            makeDateFromStringAndFormat(tempConfig);
+        return objectTest && propertyTest;
+    }
 
-            if (!isValid(tempConfig)) {
-                continue;
-            }
+    function isNumberOrStringArray(input) {
+        var arrayTest = isArray(input),
+            dataTypeTest = false;
+        if (arrayTest) {
+            dataTypeTest =
+                input.filter(function (item) {
+                    return !isNumber(item) && isString(input);
+                }).length === 0;
+        }
+        return arrayTest && dataTypeTest;
+    }
 
-            // if there is any input that was not parsed add a penalty for that format
-            currentScore += tempConfig._pf.charsLeftOver;
+    function isCalendarSpec(input) {
+        var objectTest = isObject(input) && !isObjectEmpty(input),
+            propertyTest = false,
+            properties = [
+                'sameDay',
+                'nextDay',
+                'lastDay',
+                'nextWeek',
+                'lastWeek',
+                'sameElse',
+            ],
+            i,
+            property;
 
-            //or tokens
-            currentScore += tempConfig._pf.unusedTokens.length * 10;
+        for (i = 0; i < properties.length; i += 1) {
+            property = properties[i];
+            propertyTest = propertyTest || hasOwnProp(input, property);
+        }
 
-            tempConfig._pf.score = currentScore;
+        return objectTest && propertyTest;
+    }
+
+    function getCalendarFormat(myMoment, now) {
+        var diff = myMoment.diff(now, 'days', true);
+        return diff < -6
+            ? 'sameElse'
+            : diff < -1
+            ? 'lastWeek'
+            : diff < 0
+            ? 'lastDay'
+            : diff < 1
+            ? 'sameDay'
+            : diff < 2
+            ? 'nextDay'
+            : diff < 7
+            ? 'nextWeek'
+            : 'sameElse';
+    }
 
-            if (scoreToBeat == null || currentScore < scoreToBeat) {
-                scoreToBeat = currentScore;
-                bestMoment = tempConfig;
+    function calendar$1(time, formats) {
+        // Support for single parameter, formats only overload to the calendar function
+        if (arguments.length === 1) {
+            if (!arguments[0]) {
+                time = undefined;
+                formats = undefined;
+            } else if (isMomentInput(arguments[0])) {
+                time = arguments[0];
+                formats = undefined;
+            } else if (isCalendarSpec(arguments[0])) {
+                formats = arguments[0];
+                time = undefined;
             }
         }
-
-        extend(config, bestMoment || tempConfig);
+        // We want to compare the start of today, vs this.
+        // Getting start-of-today depends on whether we're local/utc/offset or not.
+        var now = time || createLocal(),
+            sod = cloneWithOffset(now, this).startOf('day'),
+            format = hooks.calendarFormat(this, sod) || 'sameElse',
+            output =
+                formats &&
+                (isFunction(formats[format])
+                    ? formats[format].call(this, now)
+                    : formats[format]);
+
+        return this.format(
+            output || this.localeData().calendar(format, this, createLocal(now))
+        );
     }
 
-    // date from iso format
-    function parseISO(config) {
-        var i, l,
-            string = config._i,
-            match = isoRegex.exec(string);
+    function clone() {
+        return new Moment(this);
+    }
 
-        if (match) {
-            config._pf.iso = true;
-            for (i = 0, l = isoDates.length; i < l; i++) {
-                if (isoDates[i][1].exec(string)) {
-                    // match[5] should be 'T' or undefined
-                    config._f = isoDates[i][0] + (match[6] || ' ');
-                    break;
-                }
-            }
-            for (i = 0, l = isoTimes.length; i < l; i++) {
-                if (isoTimes[i][1].exec(string)) {
-                    config._f += isoTimes[i][0];
-                    break;
-                }
-            }
-            if (string.match(parseTokenTimezone)) {
-                config._f += 'Z';
-            }
-            makeDateFromStringAndFormat(config);
+    function isAfter(input, units) {
+        var localInput = isMoment(input) ? input : createLocal(input);
+        if (!(this.isValid() && localInput.isValid())) {
+            return false;
+        }
+        units = normalizeUnits(units) || 'millisecond';
+        if (units === 'millisecond') {
+            return this.valueOf() > localInput.valueOf();
         } else {
-            config._isValid = false;
+            return localInput.valueOf() < this.clone().startOf(units).valueOf();
         }
     }
 
-    // date from iso format or fallback
-    function makeDateFromString(config) {
-        parseISO(config);
-        if (config._isValid === false) {
-            delete config._isValid;
-            moment.createFromInputFallback(config);
+    function isBefore(input, units) {
+        var localInput = isMoment(input) ? input : createLocal(input);
+        if (!(this.isValid() && localInput.isValid())) {
+            return false;
+        }
+        units = normalizeUnits(units) || 'millisecond';
+        if (units === 'millisecond') {
+            return this.valueOf() < localInput.valueOf();
+        } else {
+            return this.clone().endOf(units).valueOf() < localInput.valueOf();
         }
     }
 
-    function map(arr, fn) {
-        var res = [], i;
-        for (i = 0; i < arr.length; ++i) {
-            res.push(fn(arr[i], i));
+    function isBetween(from, to, units, inclusivity) {
+        var localFrom = isMoment(from) ? from : createLocal(from),
+            localTo = isMoment(to) ? to : createLocal(to);
+        if (!(this.isValid() && localFrom.isValid() && localTo.isValid())) {
+            return false;
         }
-        return res;
+        inclusivity = inclusivity || '()';
+        return (
+            (inclusivity[0] === '('
+                ? this.isAfter(localFrom, units)
+                : !this.isBefore(localFrom, units)) &&
+            (inclusivity[1] === ')'
+                ? this.isBefore(localTo, units)
+                : !this.isAfter(localTo, units))
+        );
     }
 
-    function makeDateFromInput(config) {
-        var input = config._i, matched;
-        if (input === undefined) {
-            config._d = new Date();
-        } else if (isDate(input)) {
-            config._d = new Date(+input);
-        } else if ((matched = aspNetJsonRegex.exec(input)) !== null) {
-            config._d = new Date(+matched[1]);
-        } else if (typeof input === 'string') {
-            makeDateFromString(config);
-        } else if (isArray(input)) {
-            config._a = map(input.slice(0), function (obj) {
-                return parseInt(obj, 10);
-            });
-            dateFromConfig(config);
-        } else if (typeof(input) === 'object') {
-            dateFromObject(config);
-        } else if (typeof(input) === 'number') {
-            // from milliseconds
-            config._d = new Date(input);
+    function isSame(input, units) {
+        var localInput = isMoment(input) ? input : createLocal(input),
+            inputMs;
+        if (!(this.isValid() && localInput.isValid())) {
+            return false;
+        }
+        units = normalizeUnits(units) || 'millisecond';
+        if (units === 'millisecond') {
+            return this.valueOf() === localInput.valueOf();
         } else {
-            moment.createFromInputFallback(config);
+            inputMs = localInput.valueOf();
+            return (
+                this.clone().startOf(units).valueOf() <= inputMs &&
+                inputMs <= this.clone().endOf(units).valueOf()
+            );
         }
     }
 
-    function makeDate(y, m, d, h, M, s, ms) {
-        //can't just apply() to create a date:
-        //http://stackoverflow.com/questions/181348/instantiating-a-javascript-object-by-calling-prototype-constructor-apply
-        var date = new Date(y, m, d, h, M, s, ms);
-
-        //the date constructor doesn't accept years < 1970
-        if (y < 1970) {
-            date.setFullYear(y);
-        }
-        return date;
+    function isSameOrAfter(input, units) {
+        return this.isSame(input, units) || this.isAfter(input, units);
     }
 
-    function makeUTCDate(y) {
-        var date = new Date(Date.UTC.apply(null, arguments));
-        if (y < 1970) {
-            date.setUTCFullYear(y);
-        }
-        return date;
+    function isSameOrBefore(input, units) {
+        return this.isSame(input, units) || this.isBefore(input, units);
     }
 
-    function parseWeekday(input, locale) {
-        if (typeof input === 'string') {
-            if (!isNaN(input)) {
-                input = parseInt(input, 10);
-            }
-            else {
-                input = locale.weekdaysParse(input);
-                if (typeof input !== 'number') {
-                    return null;
-                }
-            }
+    function diff(input, units, asFloat) {
+        var that, zoneDelta, output;
+
+        if (!this.isValid()) {
+            return NaN;
         }
-        return input;
-    }
 
-    /************************************
-        Relative Time
-    ************************************/
+        that = cloneWithOffset(input, this);
 
+        if (!that.isValid()) {
+            return NaN;
+        }
 
-    // helper function for moment.fn.from, moment.fn.fromNow, and moment.duration.fn.humanize
-    function substituteTimeAgo(string, number, withoutSuffix, isFuture, locale) {
-        return locale.relativeTime(number || 1, !!withoutSuffix, string, isFuture);
-    }
+        zoneDelta = (that.utcOffset() - this.utcOffset()) * 6e4;
 
-    function relativeTime(posNegDuration, withoutSuffix, locale) {
-        var duration = moment.duration(posNegDuration).abs(),
-            seconds = round(duration.as('s')),
-            minutes = round(duration.as('m')),
-            hours = round(duration.as('h')),
-            days = round(duration.as('d')),
-            months = round(duration.as('M')),
-            years = round(duration.as('y')),
+        units = normalizeUnits(units);
 
-            args = seconds < relativeTimeThresholds.s && ['s', seconds] ||
-                minutes === 1 && ['m'] ||
-                minutes < relativeTimeThresholds.m && ['mm', minutes] ||
-                hours === 1 && ['h'] ||
-                hours < relativeTimeThresholds.h && ['hh', hours] ||
-                days === 1 && ['d'] ||
-                days < relativeTimeThresholds.d && ['dd', days] ||
-                months === 1 && ['M'] ||
-                months < relativeTimeThresholds.M && ['MM', months] ||
-                years === 1 && ['y'] || ['yy', years];
+        switch (units) {
+            case 'year':
+                output = monthDiff(this, that) / 12;
+                break;
+            case 'month':
+                output = monthDiff(this, that);
+                break;
+            case 'quarter':
+                output = monthDiff(this, that) / 3;
+                break;
+            case 'second':
+                output = (this - that) / 1e3;
+                break; // 1000
+            case 'minute':
+                output = (this - that) / 6e4;
+                break; // 1000 * 60
+            case 'hour':
+                output = (this - that) / 36e5;
+                break; // 1000 * 60 * 60
+            case 'day':
+                output = (this - that - zoneDelta) / 864e5;
+                break; // 1000 * 60 * 60 * 24, negate dst
+            case 'week':
+                output = (this - that - zoneDelta) / 6048e5;
+                break; // 1000 * 60 * 60 * 24 * 7, negate dst
+            default:
+                output = this - that;
+        }
 
-        args[2] = withoutSuffix;
-        args[3] = +posNegDuration > 0;
-        args[4] = locale;
-        return substituteTimeAgo.apply({}, args);
+        return asFloat ? output : absFloor(output);
     }
 
+    function monthDiff(a, b) {
+        if (a.date() < b.date()) {
+            // end-of-month calculations work correct when the start month has more
+            // days than the end month.
+            return -monthDiff(b, a);
+        }
+        // difference in months
+        var wholeMonthDiff = (b.year() - a.year()) * 12 + (b.month() - a.month()),
+            // b is in (anchor - 1 month, anchor + 1 month)
+            anchor = a.clone().add(wholeMonthDiff, 'months'),
+            anchor2,
+            adjust;
 
-    /************************************
-        Week of Year
-    ************************************/
+        if (b - anchor < 0) {
+            anchor2 = a.clone().add(wholeMonthDiff - 1, 'months');
+            // linear across the month
+            adjust = (b - anchor) / (anchor - anchor2);
+        } else {
+            anchor2 = a.clone().add(wholeMonthDiff + 1, 'months');
+            // linear across the month
+            adjust = (b - anchor) / (anchor2 - anchor);
+        }
 
+        //check for negative zero, return zero if negative zero
+        return -(wholeMonthDiff + adjust) || 0;
+    }
 
-    // firstDayOfWeek       0 = sun, 6 = sat
-    //                      the day of the week that starts the week
-    //                      (usually sunday or monday)
-    // firstDayOfWeekOfYear 0 = sun, 6 = sat
-    //                      the first week is the week that contains the first
-    //                      of this day of the week
-    //                      (eg. ISO weeks use thursday (4))
-    function weekOfYear(mom, firstDayOfWeek, firstDayOfWeekOfYear) {
-        var end = firstDayOfWeekOfYear - firstDayOfWeek,
-            daysToDayOfWeek = firstDayOfWeekOfYear - mom.day(),
-            adjustedMoment;
+    hooks.defaultFormat = 'YYYY-MM-DDTHH:mm:ssZ';
+    hooks.defaultFormatUtc = 'YYYY-MM-DDTHH:mm:ss[Z]';
 
+    function toString() {
+        return this.clone().locale('en').format('ddd MMM DD YYYY HH:mm:ss [GMT]ZZ');
+    }
 
-        if (daysToDayOfWeek > end) {
-            daysToDayOfWeek -= 7;
+    function toISOString(keepOffset) {
+        if (!this.isValid()) {
+            return null;
+        }
+        var utc = keepOffset !== true,
+            m = utc ? this.clone().utc() : this;
+        if (m.year() < 0 || m.year() > 9999) {
+            return formatMoment(
+                m,
+                utc
+                    ? 'YYYYYY-MM-DD[T]HH:mm:ss.SSS[Z]'
+                    : 'YYYYYY-MM-DD[T]HH:mm:ss.SSSZ'
+            );
+        }
+        if (isFunction(Date.prototype.toISOString)) {
+            // native implementation is ~50x faster, use it when we can
+            if (utc) {
+                return this.toDate().toISOString();
+            } else {
+                return new Date(this.valueOf() + this.utcOffset() * 60 * 1000)
+                    .toISOString()
+                    .replace('Z', formatMoment(m, 'Z'));
+            }
         }
+        return formatMoment(
+            m,
+            utc ? 'YYYY-MM-DD[T]HH:mm:ss.SSS[Z]' : 'YYYY-MM-DD[T]HH:mm:ss.SSSZ'
+        );
+    }
 
-        if (daysToDayOfWeek < end - 7) {
-            daysToDayOfWeek += 7;
+    /**
+     * Return a human readable representation of a moment that can
+     * also be evaluated to get a new moment which is the same
+     *
+     * @link https://nodejs.org/dist/latest/docs/api/util.html#util_custom_inspect_function_on_objects
+     */
+    function inspect() {
+        if (!this.isValid()) {
+            return 'moment.invalid(/* ' + this._i + ' */)';
         }
+        var func = 'moment',
+            zone = '',
+            prefix,
+            year,
+            datetime,
+            suffix;
+        if (!this.isLocal()) {
+            func = this.utcOffset() === 0 ? 'moment.utc' : 'moment.parseZone';
+            zone = 'Z';
+        }
+        prefix = '[' + func + '("]';
+        year = 0 <= this.year() && this.year() <= 9999 ? 'YYYY' : 'YYYYYY';
+        datetime = '-MM-DD[T]HH:mm:ss.SSS';
+        suffix = zone + '[")]';
 
-        adjustedMoment = moment(mom).add(daysToDayOfWeek, 'd');
-        return {
-            week: Math.ceil(adjustedMoment.dayOfYear() / 7),
-            year: adjustedMoment.year()
-        };
+        return this.format(prefix + year + datetime + suffix);
     }
 
-    //http://en.wikipedia.org/wiki/ISO_week_date#Calculating_a_date_given_the_year.2C_week_number_and_weekday
-    function dayOfYearFromWeeks(year, week, weekday, firstDayOfWeekOfYear, firstDayOfWeek) {
-        var d = makeUTCDate(year, 0, 1).getUTCDay(), daysToAdd, dayOfYear;
-
-        d = d === 0 ? 7 : d;
-        weekday = weekday != null ? weekday : firstDayOfWeek;
-        daysToAdd = firstDayOfWeek - d + (d > firstDayOfWeekOfYear ? 7 : 0) - (d < firstDayOfWeek ? 7 : 0);
-        dayOfYear = 7 * (week - 1) + (weekday - firstDayOfWeek) + daysToAdd + 1;
+    function format(inputString) {
+        if (!inputString) {
+            inputString = this.isUtc()
+                ? hooks.defaultFormatUtc
+                : hooks.defaultFormat;
+        }
+        var output = formatMoment(this, inputString);
+        return this.localeData().postformat(output);
+    }
 
-        return {
-            year: dayOfYear > 0 ? year : year - 1,
-            dayOfYear: dayOfYear > 0 ?  dayOfYear : daysInYear(year - 1) + dayOfYear
-        };
+    function from(time, withoutSuffix) {
+        if (
+            this.isValid() &&
+            ((isMoment(time) && time.isValid()) || createLocal(time).isValid())
+        ) {
+            return createDuration({ to: this, from: time })
+                .locale(this.locale())
+                .humanize(!withoutSuffix);
+        } else {
+            return this.localeData().invalidDate();
+        }
     }
 
-    /************************************
-        Top Level Functions
-    ************************************/
+    function fromNow(withoutSuffix) {
+        return this.from(createLocal(), withoutSuffix);
+    }
 
-    function makeMoment(config) {
-        var input = config._i,
-            format = config._f,
-            res;
+    function to(time, withoutSuffix) {
+        if (
+            this.isValid() &&
+            ((isMoment(time) && time.isValid()) || createLocal(time).isValid())
+        ) {
+            return createDuration({ from: this, to: time })
+                .locale(this.locale())
+                .humanize(!withoutSuffix);
+        } else {
+            return this.localeData().invalidDate();
+        }
+    }
 
-        config._locale = config._locale || moment.localeData(config._l);
+    function toNow(withoutSuffix) {
+        return this.to(createLocal(), withoutSuffix);
+    }
 
-        if (input === null || (format === undefined && input === '')) {
-            return moment.invalid({nullInput: true});
-        }
+    // If passed a locale key, it will set the locale for this
+    // instance.  Otherwise, it will return the locale configuration
+    // variables for this instance.
+    function locale(key) {
+        var newLocaleData;
 
-        if (typeof input === 'string') {
-            config._i = input = config._locale.preparse(input);
+        if (key === undefined) {
+            return this._locale._abbr;
+        } else {
+            newLocaleData = getLocale(key);
+            if (newLocaleData != null) {
+                this._locale = newLocaleData;
+            }
+            return this;
         }
+    }
 
-        if (moment.isMoment(input)) {
-            return new Moment(input, true);
-        } else if (format) {
-            if (isArray(format)) {
-                makeDateFromStringAndArray(config);
+    var lang = deprecate(
+        'moment().lang() is deprecated. Instead, use moment().localeData() to get the language configuration. Use moment().locale() to change languages.',
+        function (key) {
+            if (key === undefined) {
+                return this.localeData();
             } else {
-                makeDateFromStringAndFormat(config);
+                return this.locale(key);
             }
-        } else {
-            makeDateFromInput(config);
         }
+    );
 
-        res = new Moment(config);
-        if (res._nextDay) {
-            // Adding is smart enough around DST
-            res.add(1, 'd');
-            res._nextDay = undefined;
-        }
+    function localeData() {
+        return this._locale;
+    }
 
-        return res;
+    var MS_PER_SECOND = 1000,
+        MS_PER_MINUTE = 60 * MS_PER_SECOND,
+        MS_PER_HOUR = 60 * MS_PER_MINUTE,
+        MS_PER_400_YEARS = (365 * 400 + 97) * 24 * MS_PER_HOUR;
+
+    // actual modulo - handles negative numbers (for dates before 1970):
+    function mod$1(dividend, divisor) {
+        return ((dividend % divisor) + divisor) % divisor;
     }
 
-    moment = function (input, format, locale, strict) {
-        var c;
+    function localStartOfDate(y, m, d) {
+        // the date constructor remaps years 0-99 to 1900-1999
+        if (y < 100 && y >= 0) {
+            // preserve leap years using a full 400 year cycle, then reset
+            return new Date(y + 400, m, d) - MS_PER_400_YEARS;
+        } else {
+            return new Date(y, m, d).valueOf();
+        }
+    }
 
-        if (typeof(locale) === 'boolean') {
-            strict = locale;
-            locale = undefined;
+    function utcStartOfDate(y, m, d) {
+        // Date.UTC remaps years 0-99 to 1900-1999
+        if (y < 100 && y >= 0) {
+            // preserve leap years using a full 400 year cycle, then reset
+            return Date.UTC(y + 400, m, d) - MS_PER_400_YEARS;
+        } else {
+            return Date.UTC(y, m, d);
         }
-        // object construction must be done this way.
-        // https://github.com/moment/moment/issues/1423
-        c = {};
-        c._isAMomentObject = true;
-        c._i = input;
-        c._f = format;
-        c._l = locale;
-        c._strict = strict;
-        c._isUTC = false;
-        c._pf = defaultParsingFlags();
+    }
 
-        return makeMoment(c);
-    };
+    function startOf(units) {
+        var time, startOfDate;
+        units = normalizeUnits(units);
+        if (units === undefined || units === 'millisecond' || !this.isValid()) {
+            return this;
+        }
 
-    moment.suppressDeprecationWarnings = false;
+        startOfDate = this._isUTC ? utcStartOfDate : localStartOfDate;
 
-    moment.createFromInputFallback = deprecate(
-        'moment construction falls back to js Date. This is ' +
-        'discouraged and will be removed in upcoming major ' +
-        'release. Please refer to ' +
-        'https://github.com/moment/moment/issues/1407 for more info.',
-        function (config) {
-            config._d = new Date(config._i + (config._useUTC ? ' UTC' : ''));
+        switch (units) {
+            case 'year':
+                time = startOfDate(this.year(), 0, 1);
+                break;
+            case 'quarter':
+                time = startOfDate(
+                    this.year(),
+                    this.month() - (this.month() % 3),
+                    1
+                );
+                break;
+            case 'month':
+                time = startOfDate(this.year(), this.month(), 1);
+                break;
+            case 'week':
+                time = startOfDate(
+                    this.year(),
+                    this.month(),
+                    this.date() - this.weekday()
+                );
+                break;
+            case 'isoWeek':
+                time = startOfDate(
+                    this.year(),
+                    this.month(),
+                    this.date() - (this.isoWeekday() - 1)
+                );
+                break;
+            case 'day':
+            case 'date':
+                time = startOfDate(this.year(), this.month(), this.date());
+                break;
+            case 'hour':
+                time = this._d.valueOf();
+                time -= mod$1(
+                    time + (this._isUTC ? 0 : this.utcOffset() * MS_PER_MINUTE),
+                    MS_PER_HOUR
+                );
+                break;
+            case 'minute':
+                time = this._d.valueOf();
+                time -= mod$1(time, MS_PER_MINUTE);
+                break;
+            case 'second':
+                time = this._d.valueOf();
+                time -= mod$1(time, MS_PER_SECOND);
+                break;
         }
-    );
 
-    // Pick a moment m from moments so that m[fn](other) is true for all
-    // other. This relies on the function fn to be transitive.
-    //
-    // moments should either be an array of moment objects or an array, whose
-    // first element is an array of moment objects.
-    function pickBy(fn, moments) {
-        var res, i;
-        if (moments.length === 1 && isArray(moments[0])) {
-            moments = moments[0];
-        }
-        if (!moments.length) {
-            return moment();
+        this._d.setTime(time);
+        hooks.updateOffset(this, true);
+        return this;
+    }
+
+    function endOf(units) {
+        var time, startOfDate;
+        units = normalizeUnits(units);
+        if (units === undefined || units === 'millisecond' || !this.isValid()) {
+            return this;
         }
-        res = moments[0];
-        for (i = 1; i < moments.length; ++i) {
-            if (moments[i][fn](res)) {
-                res = moments[i];
-            }
+
+        startOfDate = this._isUTC ? utcStartOfDate : localStartOfDate;
+
+        switch (units) {
+            case 'year':
+                time = startOfDate(this.year() + 1, 0, 1) - 1;
+                break;
+            case 'quarter':
+                time =
+                    startOfDate(
+                        this.year(),
+                        this.month() - (this.month() % 3) + 3,
+                        1
+                    ) - 1;
+                break;
+            case 'month':
+                time = startOfDate(this.year(), this.month() + 1, 1) - 1;
+                break;
+            case 'week':
+                time =
+                    startOfDate(
+                        this.year(),
+                        this.month(),
+                        this.date() - this.weekday() + 7
+                    ) - 1;
+                break;
+            case 'isoWeek':
+                time =
+                    startOfDate(
+                        this.year(),
+                        this.month(),
+                        this.date() - (this.isoWeekday() - 1) + 7
+                    ) - 1;
+                break;
+            case 'day':
+            case 'date':
+                time = startOfDate(this.year(), this.month(), this.date() + 1) - 1;
+                break;
+            case 'hour':
+                time = this._d.valueOf();
+                time +=
+                    MS_PER_HOUR -
+                    mod$1(
+                        time + (this._isUTC ? 0 : this.utcOffset() * MS_PER_MINUTE),
+                        MS_PER_HOUR
+                    ) -
+                    1;
+                break;
+            case 'minute':
+                time = this._d.valueOf();
+                time += MS_PER_MINUTE - mod$1(time, MS_PER_MINUTE) - 1;
+                break;
+            case 'second':
+                time = this._d.valueOf();
+                time += MS_PER_SECOND - mod$1(time, MS_PER_SECOND) - 1;
+                break;
         }
-        return res;
+
+        this._d.setTime(time);
+        hooks.updateOffset(this, true);
+        return this;
+    }
+
+    function valueOf() {
+        return this._d.valueOf() - (this._offset || 0) * 60000;
     }
 
-    moment.min = function () {
-        var args = [].slice.call(arguments, 0);
+    function unix() {
+        return Math.floor(this.valueOf() / 1000);
+    }
 
-        return pickBy('isBefore', args);
-    };
+    function toDate() {
+        return new Date(this.valueOf());
+    }
 
-    moment.max = function () {
-        var args = [].slice.call(arguments, 0);
+    function toArray() {
+        var m = this;
+        return [
+            m.year(),
+            m.month(),
+            m.date(),
+            m.hour(),
+            m.minute(),
+            m.second(),
+            m.millisecond(),
+        ];
+    }
 
-        return pickBy('isAfter', args);
-    };
+    function toObject() {
+        var m = this;
+        return {
+            years: m.year(),
+            months: m.month(),
+            date: m.date(),
+            hours: m.hours(),
+            minutes: m.minutes(),
+            seconds: m.seconds(),
+            milliseconds: m.milliseconds(),
+        };
+    }
 
-    // creating with utc
-    moment.utc = function (input, format, locale, strict) {
-        var c;
+    function toJSON() {
+        // new Date(NaN).toJSON() === null
+        return this.isValid() ? this.toISOString() : null;
+    }
 
-        if (typeof(locale) === 'boolean') {
-            strict = locale;
-            locale = undefined;
-        }
-        // object construction must be done this way.
-        // https://github.com/moment/moment/issues/1423
-        c = {};
-        c._isAMomentObject = true;
-        c._useUTC = true;
-        c._isUTC = true;
-        c._l = locale;
-        c._i = input;
-        c._f = format;
-        c._strict = strict;
-        c._pf = defaultParsingFlags();
+    function isValid$2() {
+        return isValid(this);
+    }
 
-        return makeMoment(c).utc();
-    };
+    function parsingFlags() {
+        return extend({}, getParsingFlags(this));
+    }
 
-    // creating with unix timestamp (in seconds)
-    moment.unix = function (input) {
-        return moment(input * 1000);
-    };
+    function invalidAt() {
+        return getParsingFlags(this).overflow;
+    }
 
-    // duration
-    moment.duration = function (input, key) {
-        var duration = input,
-            // matching against regexp is expensive, do it on demand
-            match = null,
-            sign,
-            ret,
-            parseIso,
-            diffRes;
+    function creationData() {
+        return {
+            input: this._i,
+            format: this._f,
+            locale: this._locale,
+            isUTC: this._isUTC,
+            strict: this._strict,
+        };
+    }
 
-        if (moment.isDuration(input)) {
-            duration = {
-                ms: input._milliseconds,
-                d: input._days,
-                M: input._months
-            };
-        } else if (typeof input === 'number') {
-            duration = {};
-            if (key) {
-                duration[key] = input;
+    addFormatToken('N', 0, 0, 'eraAbbr');
+    addFormatToken('NN', 0, 0, 'eraAbbr');
+    addFormatToken('NNN', 0, 0, 'eraAbbr');
+    addFormatToken('NNNN', 0, 0, 'eraName');
+    addFormatToken('NNNNN', 0, 0, 'eraNarrow');
+
+    addFormatToken('y', ['y', 1], 'yo', 'eraYear');
+    addFormatToken('y', ['yy', 2], 0, 'eraYear');
+    addFormatToken('y', ['yyy', 3], 0, 'eraYear');
+    addFormatToken('y', ['yyyy', 4], 0, 'eraYear');
+
+    addRegexToken('N', matchEraAbbr);
+    addRegexToken('NN', matchEraAbbr);
+    addRegexToken('NNN', matchEraAbbr);
+    addRegexToken('NNNN', matchEraName);
+    addRegexToken('NNNNN', matchEraNarrow);
+
+    addParseToken(
+        ['N', 'NN', 'NNN', 'NNNN', 'NNNNN'],
+        function (input, array, config, token) {
+            var era = config._locale.erasParse(input, token, config._strict);
+            if (era) {
+                getParsingFlags(config).era = era;
             } else {
-                duration.milliseconds = input;
+                getParsingFlags(config).invalidEra = input;
             }
-        } else if (!!(match = aspNetTimeSpanJsonRegex.exec(input))) {
-            sign = (match[1] === '-') ? -1 : 1;
-            duration = {
-                y: 0,
-                d: toInt(match[DATE]) * sign,
-                h: toInt(match[HOUR]) * sign,
-                m: toInt(match[MINUTE]) * sign,
-                s: toInt(match[SECOND]) * sign,
-                ms: toInt(match[MILLISECOND]) * sign
-            };
-        } else if (!!(match = isoDurationRegex.exec(input))) {
-            sign = (match[1] === '-') ? -1 : 1;
-            parseIso = function (inp) {
-                // We'd normally use ~~inp for this, but unfortunately it also
-                // converts floats to ints.
-                // inp may be undefined, so careful calling replace on it.
-                var res = inp && parseFloat(inp.replace(',', '.'));
-                // apply sign while we're at it
-                return (isNaN(res) ? 0 : res) * sign;
-            };
-            duration = {
-                y: parseIso(match[2]),
-                M: parseIso(match[3]),
-                d: parseIso(match[4]),
-                h: parseIso(match[5]),
-                m: parseIso(match[6]),
-                s: parseIso(match[7]),
-                w: parseIso(match[8])
-            };
-        } else if (duration == null) {// checks for null or undefined
-            duration = {};
-        } else if (typeof duration === 'object' &&
-                ('from' in duration || 'to' in duration)) {
-            diffRes = momentsDifference(moment(duration.from), moment(duration.to));
-
-            duration = {};
-            duration.ms = diffRes.milliseconds;
-            duration.M = diffRes.months;
         }
+    );
 
-        ret = new Duration(duration);
+    addRegexToken('y', matchUnsigned);
+    addRegexToken('yy', matchUnsigned);
+    addRegexToken('yyy', matchUnsigned);
+    addRegexToken('yyyy', matchUnsigned);
+    addRegexToken('yo', matchEraYearOrdinal);
+
+    addParseToken(['y', 'yy', 'yyy', 'yyyy'], YEAR);
+    addParseToken(['yo'], function (input, array, config, token) {
+        var match;
+        if (config._locale._eraYearOrdinalRegex) {
+            match = input.match(config._locale._eraYearOrdinalRegex);
+        }
 
-        if (moment.isDuration(input) && hasOwnProp(input, '_locale')) {
-            ret._locale = input._locale;
+        if (config._locale.eraYearOrdinalParse) {
+            array[YEAR] = config._locale.eraYearOrdinalParse(input, match);
+        } else {
+            array[YEAR] = parseInt(input, 10);
         }
+    });
 
-        return ret;
-    };
+    function localeEras(m, format) {
+        var i,
+            l,
+            date,
+            eras = this._eras || getLocale('en')._eras;
+        for (i = 0, l = eras.length; i < l; ++i) {
+            switch (typeof eras[i].since) {
+                case 'string':
+                    // truncate time
+                    date = hooks(eras[i].since).startOf('day');
+                    eras[i].since = date.valueOf();
+                    break;
+            }
 
-    // version number
-    moment.version = VERSION;
+            switch (typeof eras[i].until) {
+                case 'undefined':
+                    eras[i].until = +Infinity;
+                    break;
+                case 'string':
+                    // truncate time
+                    date = hooks(eras[i].until).startOf('day').valueOf();
+                    eras[i].until = date.valueOf();
+                    break;
+            }
+        }
+        return eras;
+    }
 
-    // default format
-    moment.defaultFormat = isoFormat;
+    function localeErasParse(eraName, format, strict) {
+        var i,
+            l,
+            eras = this.eras(),
+            name,
+            abbr,
+            narrow;
+        eraName = eraName.toUpperCase();
 
-    // constant that refers to the ISO standard
-    moment.ISO_8601 = function () {};
+        for (i = 0, l = eras.length; i < l; ++i) {
+            name = eras[i].name.toUpperCase();
+            abbr = eras[i].abbr.toUpperCase();
+            narrow = eras[i].narrow.toUpperCase();
 
-    // Plugins that add properties should also add the key here (null value),
-    // so we can properly clone ourselves.
-    moment.momentProperties = momentProperties;
+            if (strict) {
+                switch (format) {
+                    case 'N':
+                    case 'NN':
+                    case 'NNN':
+                        if (abbr === eraName) {
+                            return eras[i];
+                        }
+                        break;
 
-    // This function will be called whenever a moment is mutated.
-    // It is intended to keep the offset in sync with the timezone.
-    moment.updateOffset = function () {};
+                    case 'NNNN':
+                        if (name === eraName) {
+                            return eras[i];
+                        }
+                        break;
 
-    // This function allows you to set a threshold for relative time strings
-    moment.relativeTimeThreshold = function (threshold, limit) {
-        if (relativeTimeThresholds[threshold] === undefined) {
-            return false;
-        }
-        if (limit === undefined) {
-            return relativeTimeThresholds[threshold];
+                    case 'NNNNN':
+                        if (narrow === eraName) {
+                            return eras[i];
+                        }
+                        break;
+                }
+            } else if ([name, abbr, narrow].indexOf(eraName) >= 0) {
+                return eras[i];
+            }
         }
-        relativeTimeThresholds[threshold] = limit;
-        return true;
-    };
+    }
 
-    moment.lang = deprecate(
-        'moment.lang is deprecated. Use moment.locale instead.',
-        function (key, value) {
-            return moment.locale(key, value);
+    function localeErasConvertYear(era, year) {
+        var dir = era.since <= era.until ? +1 : -1;
+        if (year === undefined) {
+            return hooks(era.since).year();
+        } else {
+            return hooks(era.since).year() + (year - era.offset) * dir;
         }
-    );
+    }
 
-    // This function will load locale and then set the global locale.  If
-    // no arguments are passed in, it will simply return the current global
-    // locale key.
-    moment.locale = function (key, values) {
-        var data;
-        if (key) {
-            if (typeof(values) !== 'undefined') {
-                data = moment.defineLocale(key, values);
+    function getEraName() {
+        var i,
+            l,
+            val,
+            eras = this.localeData().eras();
+        for (i = 0, l = eras.length; i < l; ++i) {
+            // truncate time
+            val = this.clone().startOf('day').valueOf();
+
+            if (eras[i].since <= val && val <= eras[i].until) {
+                return eras[i].name;
             }
-            else {
-                data = moment.localeData(key);
-            }
-
-            if (data) {
-                moment.duration._locale = moment._locale = data;
+            if (eras[i].until <= val && val <= eras[i].since) {
+                return eras[i].name;
             }
         }
 
-        return moment._locale._abbr;
-    };
+        return '';
+    }
 
-    moment.defineLocale = function (name, values) {
-        if (values !== null) {
-            values.abbr = name;
-            if (!locales[name]) {
-                locales[name] = new Locale();
+    function getEraNarrow() {
+        var i,
+            l,
+            val,
+            eras = this.localeData().eras();
+        for (i = 0, l = eras.length; i < l; ++i) {
+            // truncate time
+            val = this.clone().startOf('day').valueOf();
+
+            if (eras[i].since <= val && val <= eras[i].until) {
+                return eras[i].narrow;
+            }
+            if (eras[i].until <= val && val <= eras[i].since) {
+                return eras[i].narrow;
             }
-            locales[name].set(values);
+        }
 
-            // backwards compat for now: also set the locale
-            moment.locale(name);
+        return '';
+    }
 
-            return locales[name];
-        } else {
-            // useful for testing
-            delete locales[name];
-            return null;
+    function getEraAbbr() {
+        var i,
+            l,
+            val,
+            eras = this.localeData().eras();
+        for (i = 0, l = eras.length; i < l; ++i) {
+            // truncate time
+            val = this.clone().startOf('day').valueOf();
+
+            if (eras[i].since <= val && val <= eras[i].until) {
+                return eras[i].abbr;
+            }
+            if (eras[i].until <= val && val <= eras[i].since) {
+                return eras[i].abbr;
+            }
         }
-    };
 
-    moment.langData = deprecate(
-        'moment.langData is deprecated. Use moment.localeData instead.',
-        function (key) {
-            return moment.localeData(key);
+        return '';
+    }
+
+    function getEraYear() {
+        var i,
+            l,
+            dir,
+            val,
+            eras = this.localeData().eras();
+        for (i = 0, l = eras.length; i < l; ++i) {
+            dir = eras[i].since <= eras[i].until ? +1 : -1;
+
+            // truncate time
+            val = this.clone().startOf('day').valueOf();
+
+            if (
+                (eras[i].since <= val && val <= eras[i].until) ||
+                (eras[i].until <= val && val <= eras[i].since)
+            ) {
+                return (
+                    (this.year() - hooks(eras[i].since).year()) * dir +
+                    eras[i].offset
+                );
+            }
         }
-    );
 
-    // returns locale data
-    moment.localeData = function (key) {
-        var locale;
+        return this.year();
+    }
 
-        if (key && key._locale && key._locale._abbr) {
-            key = key._locale._abbr;
+    function erasNameRegex(isStrict) {
+        if (!hasOwnProp(this, '_erasNameRegex')) {
+            computeErasParse.call(this);
         }
+        return isStrict ? this._erasNameRegex : this._erasRegex;
+    }
 
-        if (!key) {
-            return moment._locale;
+    function erasAbbrRegex(isStrict) {
+        if (!hasOwnProp(this, '_erasAbbrRegex')) {
+            computeErasParse.call(this);
         }
+        return isStrict ? this._erasAbbrRegex : this._erasRegex;
+    }
 
-        if (!isArray(key)) {
-            //short-circuit everything else
-            locale = loadLocale(key);
-            if (locale) {
-                return locale;
-            }
-            key = [key];
+    function erasNarrowRegex(isStrict) {
+        if (!hasOwnProp(this, '_erasNarrowRegex')) {
+            computeErasParse.call(this);
         }
+        return isStrict ? this._erasNarrowRegex : this._erasRegex;
+    }
 
-        return chooseLocale(key);
-    };
+    function matchEraAbbr(isStrict, locale) {
+        return locale.erasAbbrRegex(isStrict);
+    }
 
-    // compare moment object
-    moment.isMoment = function (obj) {
-        return obj instanceof Moment ||
-            (obj != null && hasOwnProp(obj, '_isAMomentObject'));
-    };
+    function matchEraName(isStrict, locale) {
+        return locale.erasNameRegex(isStrict);
+    }
 
-    // for typechecking Duration objects
-    moment.isDuration = function (obj) {
-        return obj instanceof Duration;
-    };
+    function matchEraNarrow(isStrict, locale) {
+        return locale.erasNarrowRegex(isStrict);
+    }
 
-    for (i = lists.length - 1; i >= 0; --i) {
-        makeList(lists[i]);
+    function matchEraYearOrdinal(isStrict, locale) {
+        return locale._eraYearOrdinalRegex || matchUnsigned;
     }
 
-    moment.normalizeUnits = function (units) {
-        return normalizeUnits(units);
-    };
+    function computeErasParse() {
+        var abbrPieces = [],
+            namePieces = [],
+            narrowPieces = [],
+            mixedPieces = [],
+            i,
+            l,
+            eras = this.eras();
 
-    moment.invalid = function (flags) {
-        var m = moment.utc(NaN);
-        if (flags != null) {
-            extend(m._pf, flags);
-        }
-        else {
-            m._pf.userInvalidated = true;
+        for (i = 0, l = eras.length; i < l; ++i) {
+            namePieces.push(regexEscape(eras[i].name));
+            abbrPieces.push(regexEscape(eras[i].abbr));
+            narrowPieces.push(regexEscape(eras[i].narrow));
+
+            mixedPieces.push(regexEscape(eras[i].name));
+            mixedPieces.push(regexEscape(eras[i].abbr));
+            mixedPieces.push(regexEscape(eras[i].narrow));
         }
 
-        return m;
-    };
+        this._erasRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
+        this._erasNameRegex = new RegExp('^(' + namePieces.join('|') + ')', 'i');
+        this._erasAbbrRegex = new RegExp('^(' + abbrPieces.join('|') + ')', 'i');
+        this._erasNarrowRegex = new RegExp(
+            '^(' + narrowPieces.join('|') + ')',
+            'i'
+        );
+    }
 
-    moment.parseZone = function () {
-        return moment.apply(null, arguments).parseZone();
-    };
+    // FORMATTING
 
-    moment.parseTwoDigitYear = function (input) {
-        return toInt(input) + (toInt(input) > 68 ? 1900 : 2000);
-    };
+    addFormatToken(0, ['gg', 2], 0, function () {
+        return this.weekYear() % 100;
+    });
 
-    moment.isDate = isDate;
+    addFormatToken(0, ['GG', 2], 0, function () {
+        return this.isoWeekYear() % 100;
+    });
 
-    /************************************
-        Moment Prototype
-    ************************************/
+    function addWeekYearFormatToken(token, getter) {
+        addFormatToken(0, [token, token.length], 0, getter);
+    }
 
+    addWeekYearFormatToken('gggg', 'weekYear');
+    addWeekYearFormatToken('ggggg', 'weekYear');
+    addWeekYearFormatToken('GGGG', 'isoWeekYear');
+    addWeekYearFormatToken('GGGGG', 'isoWeekYear');
 
-    extend(moment.fn = Moment.prototype, {
+    // ALIASES
 
-        clone : function () {
-            return moment(this);
-        },
+    addUnitAlias('weekYear', 'gg');
+    addUnitAlias('isoWeekYear', 'GG');
 
-        valueOf : function () {
-            return +this._d - ((this._offset || 0) * 60000);
-        },
+    // PRIORITY
 
-        unix : function () {
-            return Math.floor(+this / 1000);
-        },
+    addUnitPriority('weekYear', 1);
+    addUnitPriority('isoWeekYear', 1);
 
-        toString : function () {
-            return this.clone().locale('en').format('ddd MMM DD YYYY HH:mm:ss [GMT]ZZ');
-        },
+    // PARSING
 
-        toDate : function () {
-            return this._offset ? new Date(+this) : this._d;
-        },
+    addRegexToken('G', matchSigned);
+    addRegexToken('g', matchSigned);
+    addRegexToken('GG', match1to2, match2);
+    addRegexToken('gg', match1to2, match2);
+    addRegexToken('GGGG', match1to4, match4);
+    addRegexToken('gggg', match1to4, match4);
+    addRegexToken('GGGGG', match1to6, match6);
+    addRegexToken('ggggg', match1to6, match6);
 
-        toISOString : function () {
-            var m = moment(this).utc();
-            if (0 < m.year() && m.year() <= 9999) {
-                if ('function' === typeof Date.prototype.toISOString) {
-                    // native implementation is ~50x faster, use it when we can
-                    return this.toDate().toISOString();
-                } else {
-                    return formatMoment(m, 'YYYY-MM-DD[T]HH:mm:ss.SSS[Z]');
-                }
-            } else {
-                return formatMoment(m, 'YYYYYY-MM-DD[T]HH:mm:ss.SSS[Z]');
-            }
-        },
+    addWeekParseToken(
+        ['gggg', 'ggggg', 'GGGG', 'GGGGG'],
+        function (input, week, config, token) {
+            week[token.substr(0, 2)] = toInt(input);
+        }
+    );
 
-        toArray : function () {
-            var m = this;
-            return [
-                m.year(),
-                m.month(),
-                m.date(),
-                m.hours(),
-                m.minutes(),
-                m.seconds(),
-                m.milliseconds()
-            ];
-        },
+    addWeekParseToken(['gg', 'GG'], function (input, week, config, token) {
+        week[token] = hooks.parseTwoDigitYear(input);
+    });
 
-        isValid : function () {
-            return isValid(this);
-        },
+    // MOMENTS
+
+    function getSetWeekYear(input) {
+        return getSetWeekYearHelper.call(
+            this,
+            input,
+            this.week(),
+            this.weekday(),
+            this.localeData()._week.dow,
+            this.localeData()._week.doy
+        );
+    }
+
+    function getSetISOWeekYear(input) {
+        return getSetWeekYearHelper.call(
+            this,
+            input,
+            this.isoWeek(),
+            this.isoWeekday(),
+            1,
+            4
+        );
+    }
+
+    function getISOWeeksInYear() {
+        return weeksInYear(this.year(), 1, 4);
+    }
+
+    function getISOWeeksInISOWeekYear() {
+        return weeksInYear(this.isoWeekYear(), 1, 4);
+    }
+
+    function getWeeksInYear() {
+        var weekInfo = this.localeData()._week;
+        return weeksInYear(this.year(), weekInfo.dow, weekInfo.doy);
+    }
+
+    function getWeeksInWeekYear() {
+        var weekInfo = this.localeData()._week;
+        return weeksInYear(this.weekYear(), weekInfo.dow, weekInfo.doy);
+    }
 
-        isDSTShifted : function () {
-            if (this._a) {
-                return this.isValid() && compareArrays(this._a, (this._isUTC ? moment.utc(this._a) : moment(this._a)).toArray()) > 0;
+    function getSetWeekYearHelper(input, week, weekday, dow, doy) {
+        var weeksTarget;
+        if (input == null) {
+            return weekOfYear(this, dow, doy).year;
+        } else {
+            weeksTarget = weeksInYear(input, dow, doy);
+            if (week > weeksTarget) {
+                week = weeksTarget;
             }
+            return setWeekAll.call(this, input, week, weekday, dow, doy);
+        }
+    }
 
-            return false;
-        },
+    function setWeekAll(weekYear, week, weekday, dow, doy) {
+        var dayOfYearData = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy),
+            date = createUTCDate(dayOfYearData.year, 0, dayOfYearData.dayOfYear);
 
-        parsingFlags : function () {
-            return extend({}, this._pf);
-        },
+        this.year(date.getUTCFullYear());
+        this.month(date.getUTCMonth());
+        this.date(date.getUTCDate());
+        return this;
+    }
 
-        invalidAt: function () {
-            return this._pf.overflow;
-        },
+    // FORMATTING
 
-        utc : function (keepLocalTime) {
-            return this.utcOffset(0, keepLocalTime);
-        },
+    addFormatToken('Q', 0, 'Qo', 'quarter');
 
-        local : function (keepLocalTime) {
-            if (this._isUTC) {
-                this.utcOffset(0, keepLocalTime);
-                this._isUTC = false;
+    // ALIASES
 
-                if (keepLocalTime) {
-                    this.subtract(this._dateUtcOffset(), 'm');
-                }
-            }
-            return this;
-        },
+    addUnitAlias('quarter', 'Q');
 
-        format : function (inputString) {
-            var output = formatMoment(this, inputString || moment.defaultFormat);
-            return this.localeData().postformat(output);
-        },
+    // PRIORITY
 
-        add : createAdder(1, 'add'),
+    addUnitPriority('quarter', 7);
 
-        subtract : createAdder(-1, 'subtract'),
+    // PARSING
 
-        diff : function (input, units, asFloat) {
-            var that = makeAs(input, this),
-                zoneDiff = (that.utcOffset() - this.utcOffset()) * 6e4,
-                anchor, diff, output, daysAdjust;
+    addRegexToken('Q', match1);
+    addParseToken('Q', function (input, array) {
+        array[MONTH] = (toInt(input) - 1) * 3;
+    });
 
-            units = normalizeUnits(units);
+    // MOMENTS
 
-            if (units === 'year' || units === 'month' || units === 'quarter') {
-                output = monthDiff(this, that);
-                if (units === 'quarter') {
-                    output = output / 3;
-                } else if (units === 'year') {
-                    output = output / 12;
-                }
-            } else {
-                diff = this - that;
-                output = units === 'second' ? diff / 1e3 : // 1000
-                    units === 'minute' ? diff / 6e4 : // 1000 * 60
-                    units === 'hour' ? diff / 36e5 : // 1000 * 60 * 60
-                    units === 'day' ? (diff - zoneDiff) / 864e5 : // 1000 * 60 * 60 * 24, negate dst
-                    units === 'week' ? (diff - zoneDiff) / 6048e5 : // 1000 * 60 * 60 * 24 * 7, negate dst
-                    diff;
-            }
-            return asFloat ? output : absRound(output);
-        },
+    function getSetQuarter(input) {
+        return input == null
+            ? Math.ceil((this.month() + 1) / 3)
+            : this.month((input - 1) * 3 + (this.month() % 3));
+    }
 
-        from : function (time, withoutSuffix) {
-            return moment.duration({to: this, from: time}).locale(this.locale()).humanize(!withoutSuffix);
-        },
+    // FORMATTING
 
-        fromNow : function (withoutSuffix) {
-            return this.from(moment(), withoutSuffix);
-        },
+    addFormatToken('D', ['DD', 2], 'Do', 'date');
 
-        calendar : function (time) {
-            // We want to compare the start of today, vs this.
-            // Getting start-of-today depends on whether we're locat/utc/offset
-            // or not.
-            var now = time || moment(),
-                sod = makeAs(now, this).startOf('day'),
-                diff = this.diff(sod, 'days', true),
-                format = diff < -6 ? 'sameElse' :
-                    diff < -1 ? 'lastWeek' :
-                    diff < 0 ? 'lastDay' :
-                    diff < 1 ? 'sameDay' :
-                    diff < 2 ? 'nextDay' :
-                    diff < 7 ? 'nextWeek' : 'sameElse';
-            return this.format(this.localeData().calendar(format, this, moment(now)));
-        },
+    // ALIASES
 
-        isLeapYear : function () {
-            return isLeapYear(this.year());
-        },
+    addUnitAlias('date', 'D');
 
-        isDST : function () {
-            return (this.utcOffset() > this.clone().month(0).utcOffset() ||
-                this.utcOffset() > this.clone().month(5).utcOffset());
-        },
+    // PRIORITY
+    addUnitPriority('date', 9);
 
-        day : function (input) {
-            var day = this._isUTC ? this._d.getUTCDay() : this._d.getDay();
-            if (input != null) {
-                input = parseWeekday(input, this.localeData());
-                return this.add(input - day, 'd');
-            } else {
-                return day;
-            }
-        },
+    // PARSING
 
-        month : makeAccessor('Month', true),
+    addRegexToken('D', match1to2);
+    addRegexToken('DD', match1to2, match2);
+    addRegexToken('Do', function (isStrict, locale) {
+        // TODO: Remove "ordinalParse" fallback in next major release.
+        return isStrict
+            ? locale._dayOfMonthOrdinalParse || locale._ordinalParse
+            : locale._dayOfMonthOrdinalParseLenient;
+    });
 
-        startOf : function (units) {
-            units = normalizeUnits(units);
-            // the following switch intentionally omits break keywords
-            // to utilize falling through the cases.
-            switch (units) {
-            case 'year':
-                this.month(0);
-                /* falls through */
-            case 'quarter':
-            case 'month':
-                this.date(1);
-                /* falls through */
-            case 'week':
-            case 'isoWeek':
-            case 'day':
-                this.hours(0);
-                /* falls through */
-            case 'hour':
-                this.minutes(0);
-                /* falls through */
-            case 'minute':
-                this.seconds(0);
-                /* falls through */
-            case 'second':
-                this.milliseconds(0);
-                /* falls through */
-            }
+    addParseToken(['D', 'DD'], DATE);
+    addParseToken('Do', function (input, array) {
+        array[DATE] = toInt(input.match(match1to2)[0]);
+    });
 
-            // weeks are a special case
-            if (units === 'week') {
-                this.weekday(0);
-            } else if (units === 'isoWeek') {
-                this.isoWeekday(1);
-            }
+    // MOMENTS
 
-            // quarters are also special
-            if (units === 'quarter') {
-                this.month(Math.floor(this.month() / 3) * 3);
-            }
+    var getSetDayOfMonth = makeGetSet('Date', true);
 
-            return this;
-        },
+    // FORMATTING
 
-        endOf: function (units) {
-            units = normalizeUnits(units);
-            if (units === undefined || units === 'millisecond') {
-                return this;
-            }
-            return this.startOf(units).add(1, (units === 'isoWeek' ? 'week' : units)).subtract(1, 'ms');
-        },
+    addFormatToken('DDD', ['DDDD', 3], 'DDDo', 'dayOfYear');
 
-        isAfter: function (input, units) {
-            var inputMs;
-            units = normalizeUnits(typeof units !== 'undefined' ? units : 'millisecond');
-            if (units === 'millisecond') {
-                input = moment.isMoment(input) ? input : moment(input);
-                return +this > +input;
-            } else {
-                inputMs = moment.isMoment(input) ? +input : +moment(input);
-                return inputMs < +this.clone().startOf(units);
-            }
-        },
+    // ALIASES
+
+    addUnitAlias('dayOfYear', 'DDD');
+
+    // PRIORITY
+    addUnitPriority('dayOfYear', 4);
+
+    // PARSING
+
+    addRegexToken('DDD', match1to3);
+    addRegexToken('DDDD', match3);
+    addParseToken(['DDD', 'DDDD'], function (input, array, config) {
+        config._dayOfYear = toInt(input);
+    });
+
+    // HELPERS
+
+    // MOMENTS
+
+    function getSetDayOfYear(input) {
+        var dayOfYear =
+            Math.round(
+                (this.clone().startOf('day') - this.clone().startOf('year')) / 864e5
+            ) + 1;
+        return input == null ? dayOfYear : this.add(input - dayOfYear, 'd');
+    }
+
+    // FORMATTING
+
+    addFormatToken('m', ['mm', 2], 0, 'minute');
 
-        isBefore: function (input, units) {
-            var inputMs;
-            units = normalizeUnits(typeof units !== 'undefined' ? units : 'millisecond');
-            if (units === 'millisecond') {
-                input = moment.isMoment(input) ? input : moment(input);
-                return +this < +input;
-            } else {
-                inputMs = moment.isMoment(input) ? +input : +moment(input);
-                return +this.clone().endOf(units) < inputMs;
-            }
-        },
+    // ALIASES
 
-        isBetween: function (from, to, units) {
-            return this.isAfter(from, units) && this.isBefore(to, units);
-        },
+    addUnitAlias('minute', 'm');
 
-        isSame: function (input, units) {
-            var inputMs;
-            units = normalizeUnits(units || 'millisecond');
-            if (units === 'millisecond') {
-                input = moment.isMoment(input) ? input : moment(input);
-                return +this === +input;
-            } else {
-                inputMs = +moment(input);
-                return +(this.clone().startOf(units)) <= inputMs && inputMs <= +(this.clone().endOf(units));
-            }
-        },
+    // PRIORITY
 
-        min: deprecate(
-                 'moment().min is deprecated, use moment.min instead. https://github.com/moment/moment/issues/1548',
-                 function (other) {
-                     other = moment.apply(null, arguments);
-                     return other < this ? this : other;
-                 }
-         ),
-
-        max: deprecate(
-                'moment().max is deprecated, use moment.max instead. https://github.com/moment/moment/issues/1548',
-                function (other) {
-                    other = moment.apply(null, arguments);
-                    return other > this ? this : other;
-                }
-        ),
+    addUnitPriority('minute', 14);
 
-        zone : deprecate(
-                'moment().zone is deprecated, use moment().utcOffset instead. ' +
-                'https://github.com/moment/moment/issues/1779',
-                function (input, keepLocalTime) {
-                    if (input != null) {
-                        if (typeof input !== 'string') {
-                            input = -input;
-                        }
+    // PARSING
 
-                        this.utcOffset(input, keepLocalTime);
+    addRegexToken('m', match1to2);
+    addRegexToken('mm', match1to2, match2);
+    addParseToken(['m', 'mm'], MINUTE);
 
-                        return this;
-                    } else {
-                        return -this.utcOffset();
-                    }
-                }
-        ),
+    // MOMENTS
 
-        // keepLocalTime = true means only change the timezone, without
-        // affecting the local hour. So 5:31:26 +0300 --[utcOffset(2, true)]-->
-        // 5:31:26 +0200 It is possible that 5:31:26 doesn't exist with offset
-        // +0200, so we adjust the time as needed, to be valid.
-        //
-        // Keeping the time actually adds/subtracts (one hour)
-        // from the actual represented time. That is why we call updateOffset
-        // a second time. In case it wants us to change the offset again
-        // _changeInProgress == true case, then we have to adjust, because
-        // there is no such time in the given timezone.
-        utcOffset : function (input, keepLocalTime) {
-            var offset = this._offset || 0,
-                localAdjust;
-            if (input != null) {
-                if (typeof input === 'string') {
-                    input = utcOffsetFromString(input);
-                }
-                if (Math.abs(input) < 16) {
-                    input = input * 60;
-                }
-                if (!this._isUTC && keepLocalTime) {
-                    localAdjust = this._dateUtcOffset();
-                }
-                this._offset = input;
-                this._isUTC = true;
-                if (localAdjust != null) {
-                    this.add(localAdjust, 'm');
-                }
-                if (offset !== input) {
-                    if (!keepLocalTime || this._changeInProgress) {
-                        addOrSubtractDurationFromMoment(this,
-                                moment.duration(input - offset, 'm'), 1, false);
-                    } else if (!this._changeInProgress) {
-                        this._changeInProgress = true;
-                        moment.updateOffset(this, true);
-                        this._changeInProgress = null;
-                    }
-                }
+    var getSetMinute = makeGetSet('Minutes', false);
 
-                return this;
-            } else {
-                return this._isUTC ? offset : this._dateUtcOffset();
-            }
-        },
+    // FORMATTING
 
-        isLocal : function () {
-            return !this._isUTC;
-        },
+    addFormatToken('s', ['ss', 2], 0, 'second');
 
-        isUtcOffset : function () {
-            return this._isUTC;
-        },
+    // ALIASES
 
-        isUtc : function () {
-            return this._isUTC && this._offset === 0;
-        },
+    addUnitAlias('second', 's');
 
-        zoneAbbr : function () {
-            return this._isUTC ? 'UTC' : '';
-        },
+    // PRIORITY
 
-        zoneName : function () {
-            return this._isUTC ? 'Coordinated Universal Time' : '';
-        },
+    addUnitPriority('second', 15);
 
-        parseZone : function () {
-            if (this._tzm) {
-                this.utcOffset(this._tzm);
-            } else if (typeof this._i === 'string') {
-                this.utcOffset(utcOffsetFromString(this._i));
-            }
-            return this;
-        },
+    // PARSING
 
-        hasAlignedHourOffset : function (input) {
-            if (!input) {
-                input = 0;
-            }
-            else {
-                input = moment(input).utcOffset();
-            }
+    addRegexToken('s', match1to2);
+    addRegexToken('ss', match1to2, match2);
+    addParseToken(['s', 'ss'], SECOND);
 
-            return (this.utcOffset() - input) % 60 === 0;
-        },
+    // MOMENTS
 
-        daysInMonth : function () {
-            return daysInMonth(this.year(), this.month());
-        },
+    var getSetSecond = makeGetSet('Seconds', false);
 
-        dayOfYear : function (input) {
-            var dayOfYear = round((moment(this).startOf('day') - moment(this).startOf('year')) / 864e5) + 1;
-            return input == null ? dayOfYear : this.add((input - dayOfYear), 'd');
-        },
+    // FORMATTING
 
-        quarter : function (input) {
-            return input == null ? Math.ceil((this.month() + 1) / 3) : this.month((input - 1) * 3 + this.month() % 3);
-        },
+    addFormatToken('S', 0, 0, function () {
+        return ~~(this.millisecond() / 100);
+    });
 
-        weekYear : function (input) {
-            var year = weekOfYear(this, this.localeData()._week.dow, this.localeData()._week.doy).year;
-            return input == null ? year : this.add((input - year), 'y');
-        },
+    addFormatToken(0, ['SS', 2], 0, function () {
+        return ~~(this.millisecond() / 10);
+    });
 
-        isoWeekYear : function (input) {
-            var year = weekOfYear(this, 1, 4).year;
-            return input == null ? year : this.add((input - year), 'y');
-        },
+    addFormatToken(0, ['SSS', 3], 0, 'millisecond');
+    addFormatToken(0, ['SSSS', 4], 0, function () {
+        return this.millisecond() * 10;
+    });
+    addFormatToken(0, ['SSSSS', 5], 0, function () {
+        return this.millisecond() * 100;
+    });
+    addFormatToken(0, ['SSSSSS', 6], 0, function () {
+        return this.millisecond() * 1000;
+    });
+    addFormatToken(0, ['SSSSSSS', 7], 0, function () {
+        return this.millisecond() * 10000;
+    });
+    addFormatToken(0, ['SSSSSSSS', 8], 0, function () {
+        return this.millisecond() * 100000;
+    });
+    addFormatToken(0, ['SSSSSSSSS', 9], 0, function () {
+        return this.millisecond() * 1000000;
+    });
 
-        week : function (input) {
-            var week = this.localeData().week(this);
-            return input == null ? week : this.add((input - week) * 7, 'd');
-        },
+    // ALIASES
 
-        isoWeek : function (input) {
-            var week = weekOfYear(this, 1, 4).week;
-            return input == null ? week : this.add((input - week) * 7, 'd');
-        },
+    addUnitAlias('millisecond', 'ms');
 
-        weekday : function (input) {
-            var weekday = (this.day() + 7 - this.localeData()._week.dow) % 7;
-            return input == null ? weekday : this.add(input - weekday, 'd');
-        },
+    // PRIORITY
 
-        isoWeekday : function (input) {
-            // behaves the same as moment#day except
-            // as a getter, returns 7 instead of 0 (1-7 range instead of 0-6)
-            // as a setter, sunday should belong to the previous week.
-            return input == null ? this.day() || 7 : this.day(this.day() % 7 ? input : input - 7);
-        },
+    addUnitPriority('millisecond', 16);
 
-        isoWeeksInYear : function () {
-            return weeksInYear(this.year(), 1, 4);
-        },
+    // PARSING
 
-        weeksInYear : function () {
-            var weekInfo = this.localeData()._week;
-            return weeksInYear(this.year(), weekInfo.dow, weekInfo.doy);
-        },
+    addRegexToken('S', match1to3, match1);
+    addRegexToken('SS', match1to3, match2);
+    addRegexToken('SSS', match1to3, match3);
 
-        get : function (units) {
-            units = normalizeUnits(units);
-            return this[units]();
-        },
+    var token, getSetMillisecond;
+    for (token = 'SSSS'; token.length <= 9; token += 'S') {
+        addRegexToken(token, matchUnsigned);
+    }
 
-        set : function (units, value) {
-            var unit;
-            if (typeof units === 'object') {
-                for (unit in units) {
-                    this.set(unit, units[unit]);
-                }
-            }
-            else {
-                units = normalizeUnits(units);
-                if (typeof this[units] === 'function') {
-                    this[units](value);
-                }
-            }
-            return this;
-        },
+    function parseMs(input, array) {
+        array[MILLISECOND] = toInt(('0.' + input) * 1000);
+    }
 
-        // If passed a locale key, it will set the locale for this
-        // instance.  Otherwise, it will return the locale configuration
-        // variables for this instance.
-        locale : function (key) {
-            var newLocaleData;
+    for (token = 'S'; token.length <= 9; token += 'S') {
+        addParseToken(token, parseMs);
+    }
 
-            if (key === undefined) {
-                return this._locale._abbr;
-            } else {
-                newLocaleData = moment.localeData(key);
-                if (newLocaleData != null) {
-                    this._locale = newLocaleData;
-                }
-                return this;
-            }
-        },
+    getSetMillisecond = makeGetSet('Milliseconds', false);
 
-        lang : deprecate(
-            'moment().lang() is deprecated. Instead, use moment().localeData() to get the language configuration. Use moment().locale() to change languages.',
-            function (key) {
-                if (key === undefined) {
-                    return this.localeData();
-                } else {
-                    return this.locale(key);
-                }
-            }
-        ),
+    // FORMATTING
 
-        localeData : function () {
-            return this._locale;
-        },
+    addFormatToken('z', 0, 0, 'zoneAbbr');
+    addFormatToken('zz', 0, 0, 'zoneName');
 
-        _dateUtcOffset : function () {
-            // On Firefox.24 Date#getTimezoneOffset returns a floating point.
-            // https://github.com/moment/moment/pull/1871
-            return -Math.round(this._d.getTimezoneOffset() / 15) * 15;
-        }
+    // MOMENTS
 
-    });
+    function getZoneAbbr() {
+        return this._isUTC ? 'UTC' : '';
+    }
 
-    function rawMonthSetter(mom, value) {
-        var dayOfMonth;
+    function getZoneName() {
+        return this._isUTC ? 'Coordinated Universal Time' : '';
+    }
 
-        // TODO: Move this out of here!
-        if (typeof value === 'string') {
-            value = mom.localeData().monthsParse(value);
-            // TODO: Another silent failure?
-            if (typeof value !== 'number') {
-                return mom;
-            }
-        }
+    var proto = Moment.prototype;
+
+    proto.add = add;
+    proto.calendar = calendar$1;
+    proto.clone = clone;
+    proto.diff = diff;
+    proto.endOf = endOf;
+    proto.format = format;
+    proto.from = from;
+    proto.fromNow = fromNow;
+    proto.to = to;
+    proto.toNow = toNow;
+    proto.get = stringGet;
+    proto.invalidAt = invalidAt;
+    proto.isAfter = isAfter;
+    proto.isBefore = isBefore;
+    proto.isBetween = isBetween;
+    proto.isSame = isSame;
+    proto.isSameOrAfter = isSameOrAfter;
+    proto.isSameOrBefore = isSameOrBefore;
+    proto.isValid = isValid$2;
+    proto.lang = lang;
+    proto.locale = locale;
+    proto.localeData = localeData;
+    proto.max = prototypeMax;
+    proto.min = prototypeMin;
+    proto.parsingFlags = parsingFlags;
+    proto.set = stringSet;
+    proto.startOf = startOf;
+    proto.subtract = subtract;
+    proto.toArray = toArray;
+    proto.toObject = toObject;
+    proto.toDate = toDate;
+    proto.toISOString = toISOString;
+    proto.inspect = inspect;
+    if (typeof Symbol !== 'undefined' && Symbol.for != null) {
+        proto[Symbol.for('nodejs.util.inspect.custom')] = function () {
+            return 'Moment<' + this.format() + '>';
+        };
+    }
+    proto.toJSON = toJSON;
+    proto.toString = toString;
+    proto.unix = unix;
+    proto.valueOf = valueOf;
+    proto.creationData = creationData;
+    proto.eraName = getEraName;
+    proto.eraNarrow = getEraNarrow;
+    proto.eraAbbr = getEraAbbr;
+    proto.eraYear = getEraYear;
+    proto.year = getSetYear;
+    proto.isLeapYear = getIsLeapYear;
+    proto.weekYear = getSetWeekYear;
+    proto.isoWeekYear = getSetISOWeekYear;
+    proto.quarter = proto.quarters = getSetQuarter;
+    proto.month = getSetMonth;
+    proto.daysInMonth = getDaysInMonth;
+    proto.week = proto.weeks = getSetWeek;
+    proto.isoWeek = proto.isoWeeks = getSetISOWeek;
+    proto.weeksInYear = getWeeksInYear;
+    proto.weeksInWeekYear = getWeeksInWeekYear;
+    proto.isoWeeksInYear = getISOWeeksInYear;
+    proto.isoWeeksInISOWeekYear = getISOWeeksInISOWeekYear;
+    proto.date = getSetDayOfMonth;
+    proto.day = proto.days = getSetDayOfWeek;
+    proto.weekday = getSetLocaleDayOfWeek;
+    proto.isoWeekday = getSetISODayOfWeek;
+    proto.dayOfYear = getSetDayOfYear;
+    proto.hour = proto.hours = getSetHour;
+    proto.minute = proto.minutes = getSetMinute;
+    proto.second = proto.seconds = getSetSecond;
+    proto.millisecond = proto.milliseconds = getSetMillisecond;
+    proto.utcOffset = getSetOffset;
+    proto.utc = setOffsetToUTC;
+    proto.local = setOffsetToLocal;
+    proto.parseZone = setOffsetToParsedOffset;
+    proto.hasAlignedHourOffset = hasAlignedHourOffset;
+    proto.isDST = isDaylightSavingTime;
+    proto.isLocal = isLocal;
+    proto.isUtcOffset = isUtcOffset;
+    proto.isUtc = isUtc;
+    proto.isUTC = isUtc;
+    proto.zoneAbbr = getZoneAbbr;
+    proto.zoneName = getZoneName;
+    proto.dates = deprecate(
+        'dates accessor is deprecated. Use date instead.',
+        getSetDayOfMonth
+    );
+    proto.months = deprecate(
+        'months accessor is deprecated. Use month instead',
+        getSetMonth
+    );
+    proto.years = deprecate(
+        'years accessor is deprecated. Use year instead',
+        getSetYear
+    );
+    proto.zone = deprecate(
+        'moment().zone is deprecated, use moment().utcOffset instead. http://momentjs.com/guides/#/warnings/zone/',
+        getSetZone
+    );
+    proto.isDSTShifted = deprecate(
+        'isDSTShifted is deprecated. See http://momentjs.com/guides/#/warnings/dst-shifted/ for more information',
+        isDaylightSavingTimeShifted
+    );
 
-        dayOfMonth = Math.min(mom.date(),
-                daysInMonth(mom.year(), value));
-        mom._d['set' + (mom._isUTC ? 'UTC' : '') + 'Month'](value, dayOfMonth);
-        return mom;
+    function createUnix(input) {
+        return createLocal(input * 1000);
     }
 
-    function rawGetter(mom, unit) {
-        return mom._d['get' + (mom._isUTC ? 'UTC' : '') + unit]();
+    function createInZone() {
+        return createLocal.apply(null, arguments).parseZone();
     }
 
-    function rawSetter(mom, unit, value) {
-        if (unit === 'Month') {
-            return rawMonthSetter(mom, value);
-        } else {
-            return mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](value);
+    function preParsePostFormat(string) {
+        return string;
+    }
+
+    var proto$1 = Locale.prototype;
+
+    proto$1.calendar = calendar;
+    proto$1.longDateFormat = longDateFormat;
+    proto$1.invalidDate = invalidDate;
+    proto$1.ordinal = ordinal;
+    proto$1.preparse = preParsePostFormat;
+    proto$1.postformat = preParsePostFormat;
+    proto$1.relativeTime = relativeTime;
+    proto$1.pastFuture = pastFuture;
+    proto$1.set = set;
+    proto$1.eras = localeEras;
+    proto$1.erasParse = localeErasParse;
+    proto$1.erasConvertYear = localeErasConvertYear;
+    proto$1.erasAbbrRegex = erasAbbrRegex;
+    proto$1.erasNameRegex = erasNameRegex;
+    proto$1.erasNarrowRegex = erasNarrowRegex;
+
+    proto$1.months = localeMonths;
+    proto$1.monthsShort = localeMonthsShort;
+    proto$1.monthsParse = localeMonthsParse;
+    proto$1.monthsRegex = monthsRegex;
+    proto$1.monthsShortRegex = monthsShortRegex;
+    proto$1.week = localeWeek;
+    proto$1.firstDayOfYear = localeFirstDayOfYear;
+    proto$1.firstDayOfWeek = localeFirstDayOfWeek;
+
+    proto$1.weekdays = localeWeekdays;
+    proto$1.weekdaysMin = localeWeekdaysMin;
+    proto$1.weekdaysShort = localeWeekdaysShort;
+    proto$1.weekdaysParse = localeWeekdaysParse;
+
+    proto$1.weekdaysRegex = weekdaysRegex;
+    proto$1.weekdaysShortRegex = weekdaysShortRegex;
+    proto$1.weekdaysMinRegex = weekdaysMinRegex;
+
+    proto$1.isPM = localeIsPM;
+    proto$1.meridiem = localeMeridiem;
+
+    function get$1(format, index, field, setter) {
+        var locale = getLocale(),
+            utc = createUTC().set(setter, index);
+        return locale[field](utc, format);
+    }
+
+    function listMonthsImpl(format, index, field) {
+        if (isNumber(format)) {
+            index = format;
+            format = undefined;
+        }
+
+        format = format || '';
+
+        if (index != null) {
+            return get$1(format, index, field, 'month');
+        }
+
+        var i,
+            out = [];
+        for (i = 0; i < 12; i++) {
+            out[i] = get$1(format, i, field, 'month');
         }
+        return out;
     }
 
-    function makeAccessor(unit, keepTime) {
-        return function (value) {
-            if (value != null) {
-                rawSetter(this, unit, value);
-                moment.updateOffset(this, keepTime);
-                return this;
-            } else {
-                return rawGetter(this, unit);
+    // ()
+    // (5)
+    // (fmt, 5)
+    // (fmt)
+    // (true)
+    // (true, 5)
+    // (true, fmt, 5)
+    // (true, fmt)
+    function listWeekdaysImpl(localeSorted, format, index, field) {
+        if (typeof localeSorted === 'boolean') {
+            if (isNumber(format)) {
+                index = format;
+                format = undefined;
+            }
+
+            format = format || '';
+        } else {
+            format = localeSorted;
+            index = format;
+            localeSorted = false;
+
+            if (isNumber(format)) {
+                index = format;
+                format = undefined;
             }
-        };
-    }
 
-    moment.fn.millisecond = moment.fn.milliseconds = makeAccessor('Milliseconds', false);
-    moment.fn.second = moment.fn.seconds = makeAccessor('Seconds', false);
-    moment.fn.minute = moment.fn.minutes = makeAccessor('Minutes', false);
-    // Setting the hour should keep the time, because the user explicitly
-    // specified which hour he wants. So trying to maintain the same hour (in
-    // a new timezone) makes sense. Adding/subtracting hours does not follow
-    // this rule.
-    moment.fn.hour = moment.fn.hours = makeAccessor('Hours', true);
-    // moment.fn.month is defined separately
-    moment.fn.date = makeAccessor('Date', true);
-    moment.fn.dates = deprecate('dates accessor is deprecated. Use date instead.', makeAccessor('Date', true));
-    moment.fn.year = makeAccessor('FullYear', true);
-    moment.fn.years = deprecate('years accessor is deprecated. Use year instead.', makeAccessor('FullYear', true));
+            format = format || '';
+        }
 
-    // add plural methods
-    moment.fn.days = moment.fn.day;
-    moment.fn.months = moment.fn.month;
-    moment.fn.weeks = moment.fn.week;
-    moment.fn.isoWeeks = moment.fn.isoWeek;
-    moment.fn.quarters = moment.fn.quarter;
+        var locale = getLocale(),
+            shift = localeSorted ? locale._week.dow : 0,
+            i,
+            out = [];
 
-    // add aliased format methods
-    moment.fn.toJSON = moment.fn.toISOString;
+        if (index != null) {
+            return get$1(format, (index + shift) % 7, field, 'day');
+        }
 
-    // alias isUtc for dev-friendliness
-    moment.fn.isUTC = moment.fn.isUtc;
+        for (i = 0; i < 7; i++) {
+            out[i] = get$1(format, (i + shift) % 7, field, 'day');
+        }
+        return out;
+    }
 
-    /************************************
-        Duration Prototype
-    ************************************/
+    function listMonths(format, index) {
+        return listMonthsImpl(format, index, 'months');
+    }
 
+    function listMonthsShort(format, index) {
+        return listMonthsImpl(format, index, 'monthsShort');
+    }
 
-    function daysToYears (days) {
-        // 400 years have 146097 days (taking into account leap year rules)
-        return days * 400 / 146097;
+    function listWeekdays(localeSorted, format, index) {
+        return listWeekdaysImpl(localeSorted, format, index, 'weekdays');
     }
 
-    function yearsToDays (years) {
-        // years * 365 + absRound(years / 4) -
-        //     absRound(years / 100) + absRound(years / 400);
-        return years * 146097 / 400;
+    function listWeekdaysShort(localeSorted, format, index) {
+        return listWeekdaysImpl(localeSorted, format, index, 'weekdaysShort');
     }
 
-    extend(moment.duration.fn = Duration.prototype, {
+    function listWeekdaysMin(localeSorted, format, index) {
+        return listWeekdaysImpl(localeSorted, format, index, 'weekdaysMin');
+    }
 
-        _bubble : function () {
-            var milliseconds = this._milliseconds,
-                days = this._days,
-                months = this._months,
-                data = this._data,
-                seconds, minutes, hours, years = 0;
+    getSetGlobalLocale('en', {
+        eras: [
+            {
+                since: '0001-01-01',
+                until: +Infinity,
+                offset: 1,
+                name: 'Anno Domini',
+                narrow: 'AD',
+                abbr: 'AD',
+            },
+            {
+                since: '0000-12-31',
+                until: -Infinity,
+                offset: 1,
+                name: 'Before Christ',
+                narrow: 'BC',
+                abbr: 'BC',
+            },
+        ],
+        dayOfMonthOrdinalParse: /\d{1,2}(th|st|nd|rd)/,
+        ordinal: function (number) {
+            var b = number % 10,
+                output =
+                    toInt((number % 100) / 10) === 1
+                        ? 'th'
+                        : b === 1
+                        ? 'st'
+                        : b === 2
+                        ? 'nd'
+                        : b === 3
+                        ? 'rd'
+                        : 'th';
+            return number + output;
+        },
+    });
 
-            // The following code bubbles up values, see the tests for
-            // examples of what that means.
-            data.milliseconds = milliseconds % 1000;
+    // Side effect imports
 
-            seconds = absRound(milliseconds / 1000);
-            data.seconds = seconds % 60;
+    hooks.lang = deprecate(
+        'moment.lang is deprecated. Use moment.locale instead.',
+        getSetGlobalLocale
+    );
+    hooks.langData = deprecate(
+        'moment.langData is deprecated. Use moment.localeData instead.',
+        getLocale
+    );
 
-            minutes = absRound(seconds / 60);
-            data.minutes = minutes % 60;
+    var mathAbs = Math.abs;
 
-            hours = absRound(minutes / 60);
-            data.hours = hours % 24;
+    function abs() {
+        var data = this._data;
 
-            days += absRound(hours / 24);
+        this._milliseconds = mathAbs(this._milliseconds);
+        this._days = mathAbs(this._days);
+        this._months = mathAbs(this._months);
 
-            // Accurately convert days to years, assume start from year 0.
-            years = absRound(daysToYears(days));
-            days -= absRound(yearsToDays(years));
+        data.milliseconds = mathAbs(data.milliseconds);
+        data.seconds = mathAbs(data.seconds);
+        data.minutes = mathAbs(data.minutes);
+        data.hours = mathAbs(data.hours);
+        data.months = mathAbs(data.months);
+        data.years = mathAbs(data.years);
 
-            // 30 days to a month
-            // TODO (iskren): Use anchor date (like 1st Jan) to compute this.
-            months += absRound(days / 30);
-            days %= 30;
+        return this;
+    }
 
-            // 12 months -> 1 year
-            years += absRound(months / 12);
-            months %= 12;
+    function addSubtract$1(duration, input, value, direction) {
+        var other = createDuration(input, value);
 
-            data.days = days;
-            data.months = months;
-            data.years = years;
-        },
+        duration._milliseconds += direction * other._milliseconds;
+        duration._days += direction * other._days;
+        duration._months += direction * other._months;
 
-        abs : function () {
-            this._milliseconds = Math.abs(this._milliseconds);
-            this._days = Math.abs(this._days);
-            this._months = Math.abs(this._months);
+        return duration._bubble();
+    }
 
-            this._data.milliseconds = Math.abs(this._data.milliseconds);
-            this._data.seconds = Math.abs(this._data.seconds);
-            this._data.minutes = Math.abs(this._data.minutes);
-            this._data.hours = Math.abs(this._data.hours);
-            this._data.months = Math.abs(this._data.months);
-            this._data.years = Math.abs(this._data.years);
+    // supports only 2.0-style add(1, 's') or add(duration)
+    function add$1(input, value) {
+        return addSubtract$1(this, input, value, 1);
+    }
 
-            return this;
-        },
+    // supports only 2.0-style subtract(1, 's') or subtract(duration)
+    function subtract$1(input, value) {
+        return addSubtract$1(this, input, value, -1);
+    }
 
-        weeks : function () {
-            return absRound(this.days() / 7);
-        },
+    function absCeil(number) {
+        if (number < 0) {
+            return Math.floor(number);
+        } else {
+            return Math.ceil(number);
+        }
+    }
 
-        valueOf : function () {
-            return this._milliseconds +
-              this._days * 864e5 +
-              (this._months % 12) * 2592e6 +
-              toInt(this._months / 12) * 31536e6;
-        },
+    function bubble() {
+        var milliseconds = this._milliseconds,
+            days = this._days,
+            months = this._months,
+            data = this._data,
+            seconds,
+            minutes,
+            hours,
+            years,
+            monthsFromDays;
+
+        // if we have a mix of positive and negative values, bubble down first
+        // check: https://github.com/moment/moment/issues/2166
+        if (
+            !(
+                (milliseconds >= 0 && days >= 0 && months >= 0) ||
+                (milliseconds <= 0 && days <= 0 && months <= 0)
+            )
+        ) {
+            milliseconds += absCeil(monthsToDays(months) + days) * 864e5;
+            days = 0;
+            months = 0;
+        }
 
-        humanize : function (withSuffix) {
-            var output = relativeTime(this, !withSuffix, this.localeData());
+        // The following code bubbles up values, see the tests for
+        // examples of what that means.
+        data.milliseconds = milliseconds % 1000;
 
-            if (withSuffix) {
-                output = this.localeData().pastFuture(+this, output);
-            }
+        seconds = absFloor(milliseconds / 1000);
+        data.seconds = seconds % 60;
 
-            return this.localeData().postformat(output);
-        },
+        minutes = absFloor(seconds / 60);
+        data.minutes = minutes % 60;
 
-        add : function (input, val) {
-            // supports only 2.0-style add(1, 's') or add(moment)
-            var dur = moment.duration(input, val);
+        hours = absFloor(minutes / 60);
+        data.hours = hours % 24;
 
-            this._milliseconds += dur._milliseconds;
-            this._days += dur._days;
-            this._months += dur._months;
+        days += absFloor(hours / 24);
 
-            this._bubble();
+        // convert days to months
+        monthsFromDays = absFloor(daysToMonths(days));
+        months += monthsFromDays;
+        days -= absCeil(monthsToDays(monthsFromDays));
 
-            return this;
-        },
+        // 12 months -> 1 year
+        years = absFloor(months / 12);
+        months %= 12;
 
-        subtract : function (input, val) {
-            var dur = moment.duration(input, val);
+        data.days = days;
+        data.months = months;
+        data.years = years;
 
-            this._milliseconds -= dur._milliseconds;
-            this._days -= dur._days;
-            this._months -= dur._months;
+        return this;
+    }
 
-            this._bubble();
+    function daysToMonths(days) {
+        // 400 years have 146097 days (taking into account leap year rules)
+        // 400 years have 12 months === 4800
+        return (days * 4800) / 146097;
+    }
 
-            return this;
-        },
+    function monthsToDays(months) {
+        // the reverse of daysToMonths
+        return (months * 146097) / 4800;
+    }
 
-        get : function (units) {
-            units = normalizeUnits(units);
-            return this[units.toLowerCase() + 's']();
-        },
+    function as(units) {
+        if (!this.isValid()) {
+            return NaN;
+        }
+        var days,
+            months,
+            milliseconds = this._milliseconds;
 
-        as : function (units) {
-            var days, months;
-            units = normalizeUnits(units);
+        units = normalizeUnits(units);
 
-            if (units === 'month' || units === 'year') {
-                days = this._days + this._milliseconds / 864e5;
-                months = this._months + daysToYears(days) * 12;
-                return units === 'month' ? months : months / 12;
-            } else {
-                // handle milliseconds separately because of floating point math errors (issue #1867)
-                days = this._days + Math.round(yearsToDays(this._months / 12));
-                switch (units) {
-                    case 'week': return days / 7 + this._milliseconds / 6048e5;
-                    case 'day': return days + this._milliseconds / 864e5;
-                    case 'hour': return days * 24 + this._milliseconds / 36e5;
-                    case 'minute': return days * 24 * 60 + this._milliseconds / 6e4;
-                    case 'second': return days * 24 * 60 * 60 + this._milliseconds / 1000;
-                    // Math.floor prevents floating point math errors here
-                    case 'millisecond': return Math.floor(days * 24 * 60 * 60 * 1000) + this._milliseconds;
-                    default: throw new Error('Unknown unit ' + units);
-                }
+        if (units === 'month' || units === 'quarter' || units === 'year') {
+            days = this._days + milliseconds / 864e5;
+            months = this._months + daysToMonths(days);
+            switch (units) {
+                case 'month':
+                    return months;
+                case 'quarter':
+                    return months / 3;
+                case 'year':
+                    return months / 12;
             }
-        },
+        } else {
+            // handle milliseconds separately because of floating point math errors (issue #1867)
+            days = this._days + Math.round(monthsToDays(this._months));
+            switch (units) {
+                case 'week':
+                    return days / 7 + milliseconds / 6048e5;
+                case 'day':
+                    return days + milliseconds / 864e5;
+                case 'hour':
+                    return days * 24 + milliseconds / 36e5;
+                case 'minute':
+                    return days * 1440 + milliseconds / 6e4;
+                case 'second':
+                    return days * 86400 + milliseconds / 1000;
+                // Math.floor prevents floating point math errors here
+                case 'millisecond':
+                    return Math.floor(days * 864e5) + milliseconds;
+                default:
+                    throw new Error('Unknown unit ' + units);
+            }
+        }
+    }
 
-        lang : moment.fn.lang,
-        locale : moment.fn.locale,
+    // TODO: Use this.as('ms')?
+    function valueOf$1() {
+        if (!this.isValid()) {
+            return NaN;
+        }
+        return (
+            this._milliseconds +
+            this._days * 864e5 +
+            (this._months % 12) * 2592e6 +
+            toInt(this._months / 12) * 31536e6
+        );
+    }
 
-        toIsoString : deprecate(
-            'toIsoString() is deprecated. Please use toISOString() instead ' +
-            '(notice the capitals)',
-            function () {
-                return this.toISOString();
-            }
-        ),
+    function makeAs(alias) {
+        return function () {
+            return this.as(alias);
+        };
+    }
 
-        toISOString : function () {
-            // inspired by https://github.com/dordille/moment-isoduration/blob/master/moment.isoduration.js
-            var years = Math.abs(this.years()),
-                months = Math.abs(this.months()),
-                days = Math.abs(this.days()),
-                hours = Math.abs(this.hours()),
-                minutes = Math.abs(this.minutes()),
-                seconds = Math.abs(this.seconds() + this.milliseconds() / 1000);
-
-            if (!this.asSeconds()) {
-                // this is the same as C#'s (Noda) and python (isodate)...
-                // but not other JS (goog.date)
-                return 'P0D';
-            }
-
-            return (this.asSeconds() < 0 ? '-' : '') +
-                'P' +
-                (years ? years + 'Y' : '') +
-                (months ? months + 'M' : '') +
-                (days ? days + 'D' : '') +
-                ((hours || minutes || seconds) ? 'T' : '') +
-                (hours ? hours + 'H' : '') +
-                (minutes ? minutes + 'M' : '') +
-                (seconds ? seconds + 'S' : '');
-        },
+    var asMilliseconds = makeAs('ms'),
+        asSeconds = makeAs('s'),
+        asMinutes = makeAs('m'),
+        asHours = makeAs('h'),
+        asDays = makeAs('d'),
+        asWeeks = makeAs('w'),
+        asMonths = makeAs('M'),
+        asQuarters = makeAs('Q'),
+        asYears = makeAs('y');
+
+    function clone$1() {
+        return createDuration(this);
+    }
 
-        localeData : function () {
-            return this._locale;
-        },
+    function get$2(units) {
+        units = normalizeUnits(units);
+        return this.isValid() ? this[units + 's']() : NaN;
+    }
 
-        toJSON : function () {
-            return this.toISOString();
-        }
-    });
+    function makeGetter(name) {
+        return function () {
+            return this.isValid() ? this._data[name] : NaN;
+        };
+    }
+
+    var milliseconds = makeGetter('milliseconds'),
+        seconds = makeGetter('seconds'),
+        minutes = makeGetter('minutes'),
+        hours = makeGetter('hours'),
+        days = makeGetter('days'),
+        months = makeGetter('months'),
+        years = makeGetter('years');
 
-    moment.duration.fn.toString = moment.duration.fn.toISOString;
+    function weeks() {
+        return absFloor(this.days() / 7);
+    }
 
-    function makeDurationGetter(name) {
-        moment.duration.fn[name] = function () {
-            return this._data[name];
+    var round = Math.round,
+        thresholds = {
+            ss: 44, // a few seconds to seconds
+            s: 45, // seconds to minute
+            m: 45, // minutes to hour
+            h: 22, // hours to day
+            d: 26, // days to month/week
+            w: null, // weeks to month
+            M: 11, // months to year
         };
+
+    // helper function for moment.fn.from, moment.fn.fromNow, and moment.duration.fn.humanize
+    function substituteTimeAgo(string, number, withoutSuffix, isFuture, locale) {
+        return locale.relativeTime(number || 1, !!withoutSuffix, string, isFuture);
     }
 
-    for (i in unitMillisecondFactors) {
-        if (hasOwnProp(unitMillisecondFactors, i)) {
-            makeDurationGetter(i.toLowerCase());
+    function relativeTime$1(posNegDuration, withoutSuffix, thresholds, locale) {
+        var duration = createDuration(posNegDuration).abs(),
+            seconds = round(duration.as('s')),
+            minutes = round(duration.as('m')),
+            hours = round(duration.as('h')),
+            days = round(duration.as('d')),
+            months = round(duration.as('M')),
+            weeks = round(duration.as('w')),
+            years = round(duration.as('y')),
+            a =
+                (seconds <= thresholds.ss && ['s', seconds]) ||
+                (seconds < thresholds.s && ['ss', seconds]) ||
+                (minutes <= 1 && ['m']) ||
+                (minutes < thresholds.m && ['mm', minutes]) ||
+                (hours <= 1 && ['h']) ||
+                (hours < thresholds.h && ['hh', hours]) ||
+                (days <= 1 && ['d']) ||
+                (days < thresholds.d && ['dd', days]);
+
+        if (thresholds.w != null) {
+            a =
+                a ||
+                (weeks <= 1 && ['w']) ||
+                (weeks < thresholds.w && ['ww', weeks]);
         }
+        a = a ||
+            (months <= 1 && ['M']) ||
+            (months < thresholds.M && ['MM', months]) ||
+            (years <= 1 && ['y']) || ['yy', years];
+
+        a[2] = withoutSuffix;
+        a[3] = +posNegDuration > 0;
+        a[4] = locale;
+        return substituteTimeAgo.apply(null, a);
     }
 
-    moment.duration.fn.asMilliseconds = function () {
-        return this.as('ms');
-    };
-    moment.duration.fn.asSeconds = function () {
-        return this.as('s');
-    };
-    moment.duration.fn.asMinutes = function () {
-        return this.as('m');
-    };
-    moment.duration.fn.asHours = function () {
-        return this.as('h');
-    };
-    moment.duration.fn.asDays = function () {
-        return this.as('d');
-    };
-    moment.duration.fn.asWeeks = function () {
-        return this.as('weeks');
-    };
-    moment.duration.fn.asMonths = function () {
-        return this.as('M');
-    };
-    moment.duration.fn.asYears = function () {
-        return this.as('y');
-    };
+    // This function allows you to set the rounding function for relative time strings
+    function getSetRelativeTimeRounding(roundingFunction) {
+        if (roundingFunction === undefined) {
+            return round;
+        }
+        if (typeof roundingFunction === 'function') {
+            round = roundingFunction;
+            return true;
+        }
+        return false;
+    }
+
+    // This function allows you to set a threshold for relative time strings
+    function getSetRelativeTimeThreshold(threshold, limit) {
+        if (thresholds[threshold] === undefined) {
+            return false;
+        }
+        if (limit === undefined) {
+            return thresholds[threshold];
+        }
+        thresholds[threshold] = limit;
+        if (threshold === 's') {
+            thresholds.ss = limit - 1;
+        }
+        return true;
+    }
 
-    /************************************
-        Default Locale
-    ************************************/
+    function humanize(argWithSuffix, argThresholds) {
+        if (!this.isValid()) {
+            return this.localeData().invalidDate();
+        }
 
+        var withSuffix = false,
+            th = thresholds,
+            locale,
+            output;
 
-    // Set default locale, other locale will inherit from English.
-    moment.locale('en', {
-        ordinalParse: /\d{1,2}(th|st|nd|rd)/,
-        ordinal : function (number) {
-            var b = number % 10,
-                output = (toInt(number % 100 / 10) === 1) ? 'th' :
-                (b === 1) ? 'st' :
-                (b === 2) ? 'nd' :
-                (b === 3) ? 'rd' : 'th';
-            return number + output;
+        if (typeof argWithSuffix === 'object') {
+            argThresholds = argWithSuffix;
+            argWithSuffix = false;
+        }
+        if (typeof argWithSuffix === 'boolean') {
+            withSuffix = argWithSuffix;
+        }
+        if (typeof argThresholds === 'object') {
+            th = Object.assign({}, thresholds, argThresholds);
+            if (argThresholds.s != null && argThresholds.ss == null) {
+                th.ss = argThresholds.s - 1;
+            }
         }
-    });
 
-    /* EMBED_LOCALES */
+        locale = this.localeData();
+        output = relativeTime$1(this, !withSuffix, th, locale);
 
-    /************************************
-        Exposing Moment
-    ************************************/
+        if (withSuffix) {
+            output = locale.pastFuture(+this, output);
+        }
 
-    function makeGlobal(shouldDeprecate) {
-        /*global ender:false */
-        if (typeof ender !== 'undefined') {
-            return;
+        return locale.postformat(output);
+    }
+
+    var abs$1 = Math.abs;
+
+    function sign(x) {
+        return (x > 0) - (x < 0) || +x;
+    }
+
+    function toISOString$1() {
+        // for ISO strings we do not use the normal bubbling rules:
+        //  * milliseconds bubble up until they become hours
+        //  * days do not bubble at all
+        //  * months bubble up until they become years
+        // This is because there is no context-free conversion between hours and days
+        // (think of clock changes)
+        // and also not between days and months (28-31 days per month)
+        if (!this.isValid()) {
+            return this.localeData().invalidDate();
         }
-        oldGlobalMoment = globalScope.moment;
-        if (shouldDeprecate) {
-            globalScope.moment = deprecate(
-                    'Accessing Moment through the global scope is ' +
-                    'deprecated, and will be removed in an upcoming ' +
-                    'release.',
-                    moment);
-        } else {
-            globalScope.moment = moment;
+
+        var seconds = abs$1(this._milliseconds) / 1000,
+            days = abs$1(this._days),
+            months = abs$1(this._months),
+            minutes,
+            hours,
+            years,
+            s,
+            total = this.asSeconds(),
+            totalSign,
+            ymSign,
+            daysSign,
+            hmsSign;
+
+        if (!total) {
+            // this is the same as C#'s (Noda) and python (isodate)...
+            // but not other JS (goog.date)
+            return 'P0D';
         }
+
+        // 3600 seconds -> 60 minutes -> 1 hour
+        minutes = absFloor(seconds / 60);
+        hours = absFloor(minutes / 60);
+        seconds %= 60;
+        minutes %= 60;
+
+        // 12 months -> 1 year
+        years = absFloor(months / 12);
+        months %= 12;
+
+        // inspired by https://github.com/dordille/moment-isoduration/blob/master/moment.isoduration.js
+        s = seconds ? seconds.toFixed(3).replace(/\.?0+$/, '') : '';
+
+        totalSign = total < 0 ? '-' : '';
+        ymSign = sign(this._months) !== sign(total) ? '-' : '';
+        daysSign = sign(this._days) !== sign(total) ? '-' : '';
+        hmsSign = sign(this._milliseconds) !== sign(total) ? '-' : '';
+
+        return (
+            totalSign +
+            'P' +
+            (years ? ymSign + years + 'Y' : '') +
+            (months ? ymSign + months + 'M' : '') +
+            (days ? daysSign + days + 'D' : '') +
+            (hours || minutes || seconds ? 'T' : '') +
+            (hours ? hmsSign + hours + 'H' : '') +
+            (minutes ? hmsSign + minutes + 'M' : '') +
+            (seconds ? hmsSign + s + 'S' : '')
+        );
     }
 
-    // CommonJS module is defined
-    if (hasModule) {
-        module.exports = moment;
-    } else if (typeof define === 'function' && define.amd) {
-        define(function (require, exports, module) {
-            if (module.config && module.config() && module.config().noGlobal === true) {
-                // release the global variable
-                globalScope.moment = oldGlobalMoment;
-            }
+    var proto$2 = Duration.prototype;
+
+    proto$2.isValid = isValid$1;
+    proto$2.abs = abs;
+    proto$2.add = add$1;
+    proto$2.subtract = subtract$1;
+    proto$2.as = as;
+    proto$2.asMilliseconds = asMilliseconds;
+    proto$2.asSeconds = asSeconds;
+    proto$2.asMinutes = asMinutes;
+    proto$2.asHours = asHours;
+    proto$2.asDays = asDays;
+    proto$2.asWeeks = asWeeks;
+    proto$2.asMonths = asMonths;
+    proto$2.asQuarters = asQuarters;
+    proto$2.asYears = asYears;
+    proto$2.valueOf = valueOf$1;
+    proto$2._bubble = bubble;
+    proto$2.clone = clone$1;
+    proto$2.get = get$2;
+    proto$2.milliseconds = milliseconds;
+    proto$2.seconds = seconds;
+    proto$2.minutes = minutes;
+    proto$2.hours = hours;
+    proto$2.days = days;
+    proto$2.weeks = weeks;
+    proto$2.months = months;
+    proto$2.years = years;
+    proto$2.humanize = humanize;
+    proto$2.toISOString = toISOString$1;
+    proto$2.toString = toISOString$1;
+    proto$2.toJSON = toISOString$1;
+    proto$2.locale = locale;
+    proto$2.localeData = localeData;
+
+    proto$2.toIsoString = deprecate(
+        'toIsoString() is deprecated. Please use toISOString() instead (notice the capitals)',
+        toISOString$1
+    );
+    proto$2.lang = lang;
 
-            return moment;
-        });
-        makeGlobal(true);
-    } else {
-        makeGlobal();
-    }
-}).call(this);
+    // FORMATTING
+
+    addFormatToken('X', 0, 0, 'unix');
+    addFormatToken('x', 0, 0, 'valueOf');
+
+    // PARSING
+
+    addRegexToken('x', matchSigned);
+    addRegexToken('X', matchTimestamp);
+    addParseToken('X', function (input, array, config) {
+        config._d = new Date(parseFloat(input) * 1000);
+    });
+    addParseToken('x', function (input, array, config) {
+        config._d = new Date(toInt(input));
+    });
+
+    //! moment.js
+
+    hooks.version = '2.29.2';
+
+    setHookCallback(createLocal);
+
+    hooks.fn = proto;
+    hooks.min = min;
+    hooks.max = max;
+    hooks.now = now;
+    hooks.utc = createUTC;
+    hooks.unix = createUnix;
+    hooks.months = listMonths;
+    hooks.isDate = isDate;
+    hooks.locale = getSetGlobalLocale;
+    hooks.invalid = createInvalid;
+    hooks.duration = createDuration;
+    hooks.isMoment = isMoment;
+    hooks.weekdays = listWeekdays;
+    hooks.parseZone = createInZone;
+    hooks.localeData = getLocale;
+    hooks.isDuration = isDuration;
+    hooks.monthsShort = listMonthsShort;
+    hooks.weekdaysMin = listWeekdaysMin;
+    hooks.defineLocale = defineLocale;
+    hooks.updateLocale = updateLocale;
+    hooks.locales = listLocales;
+    hooks.weekdaysShort = listWeekdaysShort;
+    hooks.normalizeUnits = normalizeUnits;
+    hooks.relativeTimeRounding = getSetRelativeTimeRounding;
+    hooks.relativeTimeThreshold = getSetRelativeTimeThreshold;
+    hooks.calendarFormat = getCalendarFormat;
+    hooks.prototype = proto;
+
+    // currently HTML5 input type only supports 24-hour formats
+    hooks.HTML5_FMT = {
+        DATETIME_LOCAL: 'YYYY-MM-DDTHH:mm', // <input type="datetime-local" />
+        DATETIME_LOCAL_SECONDS: 'YYYY-MM-DDTHH:mm:ss', // <input type="datetime-local" step="1" />
+        DATETIME_LOCAL_MS: 'YYYY-MM-DDTHH:mm:ss.SSS', // <input type="datetime-local" step="0.001" />
+        DATE: 'YYYY-MM-DD', // <input type="date" />
+        TIME: 'HH:mm', // <input type="time" />
+        TIME_SECONDS: 'HH:mm:ss', // <input type="time" step="1" />
+        TIME_MS: 'HH:mm:ss.SSS', // <input type="time" step="0.001" />
+        WEEK: 'GGGG-[W]WW', // <input type="week" />
+        MONTH: 'YYYY-MM', // <input type="month" />
+    };
+
+    return hooks;
+
+})));
index 024d488fbc8bda74f0115e1d5116528b3c1128c6..c04a26c950aec0c5e48c312b2ac3b13e01dec7eb 100644 (file)
@@ -1,7 +1,2 @@
-//! moment.js
-//! version : 2.9.0
-//! authors : Tim Wood, Iskren Chernev, Moment.js contributors
-//! license : MIT
-//! momentjs.com
-(function(a){function b(a,b,c){switch(arguments.length){case 2:return null!=a?a:b;case 3:return null!=a?a:null!=b?b:c;default:throw new Error("Implement me")}}function c(a,b){return Bb.call(a,b)}function d(){return{empty:!1,unusedTokens:[],unusedInput:[],overflow:-2,charsLeftOver:0,nullInput:!1,invalidMonth:null,invalidFormat:!1,userInvalidated:!1,iso:!1}}function e(a){vb.suppressDeprecationWarnings===!1&&"undefined"!=typeof console&&console.warn&&console.warn("Deprecation warning: "+a)}function f(a,b){var c=!0;return o(function(){return c&&(e(a),c=!1),b.apply(this,arguments)},b)}function g(a,b){sc[a]||(e(b),sc[a]=!0)}function h(a,b){return function(c){return r(a.call(this,c),b)}}function i(a,b){return function(c){return this.localeData().ordinal(a.call(this,c),b)}}function j(a,b){var c,d,e=12*(b.year()-a.year())+(b.month()-a.month()),f=a.clone().add(e,"months");return 0>b-f?(c=a.clone().add(e-1,"months"),d=(b-f)/(f-c)):(c=a.clone().add(e+1,"months"),d=(b-f)/(c-f)),-(e+d)}function k(a,b,c){var d;return null==c?b:null!=a.meridiemHour?a.meridiemHour(b,c):null!=a.isPM?(d=a.isPM(c),d&&12>b&&(b+=12),d||12!==b||(b=0),b):b}function l(){}function m(a,b){b!==!1&&H(a),p(this,a),this._d=new Date(+a._d),uc===!1&&(uc=!0,vb.updateOffset(this),uc=!1)}function n(a){var b=A(a),c=b.year||0,d=b.quarter||0,e=b.month||0,f=b.week||0,g=b.day||0,h=b.hour||0,i=b.minute||0,j=b.second||0,k=b.millisecond||0;this._milliseconds=+k+1e3*j+6e4*i+36e5*h,this._days=+g+7*f,this._months=+e+3*d+12*c,this._data={},this._locale=vb.localeData(),this._bubble()}function o(a,b){for(var d in b)c(b,d)&&(a[d]=b[d]);return c(b,"toString")&&(a.toString=b.toString),c(b,"valueOf")&&(a.valueOf=b.valueOf),a}function p(a,b){var c,d,e;if("undefined"!=typeof b._isAMomentObject&&(a._isAMomentObject=b._isAMomentObject),"undefined"!=typeof b._i&&(a._i=b._i),"undefined"!=typeof b._f&&(a._f=b._f),"undefined"!=typeof b._l&&(a._l=b._l),"undefined"!=typeof b._strict&&(a._strict=b._strict),"undefined"!=typeof b._tzm&&(a._tzm=b._tzm),"undefined"!=typeof b._isUTC&&(a._isUTC=b._isUTC),"undefined"!=typeof b._offset&&(a._offset=b._offset),"undefined"!=typeof b._pf&&(a._pf=b._pf),"undefined"!=typeof b._locale&&(a._locale=b._locale),Kb.length>0)for(c in Kb)d=Kb[c],e=b[d],"undefined"!=typeof e&&(a[d]=e);return a}function q(a){return 0>a?Math.ceil(a):Math.floor(a)}function r(a,b,c){for(var d=""+Math.abs(a),e=a>=0;d.length<b;)d="0"+d;return(e?c?"+":"":"-")+d}function s(a,b){var c={milliseconds:0,months:0};return c.months=b.month()-a.month()+12*(b.year()-a.year()),a.clone().add(c.months,"M").isAfter(b)&&--c.months,c.milliseconds=+b-+a.clone().add(c.months,"M"),c}function t(a,b){var c;return b=M(b,a),a.isBefore(b)?c=s(a,b):(c=s(b,a),c.milliseconds=-c.milliseconds,c.months=-c.months),c}function u(a,b){return function(c,d){var e,f;return null===d||isNaN(+d)||(g(b,"moment()."+b+"(period, number) is deprecated. Please use moment()."+b+"(number, period)."),f=c,c=d,d=f),c="string"==typeof c?+c:c,e=vb.duration(c,d),v(this,e,a),this}}function v(a,b,c,d){var e=b._milliseconds,f=b._days,g=b._months;d=null==d?!0:d,e&&a._d.setTime(+a._d+e*c),f&&pb(a,"Date",ob(a,"Date")+f*c),g&&nb(a,ob(a,"Month")+g*c),d&&vb.updateOffset(a,f||g)}function w(a){return"[object Array]"===Object.prototype.toString.call(a)}function x(a){return"[object Date]"===Object.prototype.toString.call(a)||a instanceof Date}function y(a,b,c){var d,e=Math.min(a.length,b.length),f=Math.abs(a.length-b.length),g=0;for(d=0;e>d;d++)(c&&a[d]!==b[d]||!c&&C(a[d])!==C(b[d]))&&g++;return g+f}function z(a){if(a){var b=a.toLowerCase().replace(/(.)s$/,"$1");a=lc[a]||mc[b]||b}return a}function A(a){var b,d,e={};for(d in a)c(a,d)&&(b=z(d),b&&(e[b]=a[d]));return e}function B(b){var c,d;if(0===b.indexOf("week"))c=7,d="day";else{if(0!==b.indexOf("month"))return;c=12,d="month"}vb[b]=function(e,f){var g,h,i=vb._locale[b],j=[];if("number"==typeof e&&(f=e,e=a),h=function(a){var b=vb().utc().set(d,a);return i.call(vb._locale,b,e||"")},null!=f)return h(f);for(g=0;c>g;g++)j.push(h(g));return j}}function C(a){var b=+a,c=0;return 0!==b&&isFinite(b)&&(c=b>=0?Math.floor(b):Math.ceil(b)),c}function D(a,b){return new Date(Date.UTC(a,b+1,0)).getUTCDate()}function E(a,b,c){return jb(vb([a,11,31+b-c]),b,c).week}function F(a){return G(a)?366:365}function G(a){return a%4===0&&a%100!==0||a%400===0}function H(a){var b;a._a&&-2===a._pf.overflow&&(b=a._a[Db]<0||a._a[Db]>11?Db:a._a[Eb]<1||a._a[Eb]>D(a._a[Cb],a._a[Db])?Eb:a._a[Fb]<0||a._a[Fb]>24||24===a._a[Fb]&&(0!==a._a[Gb]||0!==a._a[Hb]||0!==a._a[Ib])?Fb:a._a[Gb]<0||a._a[Gb]>59?Gb:a._a[Hb]<0||a._a[Hb]>59?Hb:a._a[Ib]<0||a._a[Ib]>999?Ib:-1,a._pf._overflowDayOfYear&&(Cb>b||b>Eb)&&(b=Eb),a._pf.overflow=b)}function I(b){return null==b._isValid&&(b._isValid=!isNaN(b._d.getTime())&&b._pf.overflow<0&&!b._pf.empty&&!b._pf.invalidMonth&&!b._pf.nullInput&&!b._pf.invalidFormat&&!b._pf.userInvalidated,b._strict&&(b._isValid=b._isValid&&0===b._pf.charsLeftOver&&0===b._pf.unusedTokens.length&&b._pf.bigHour===a)),b._isValid}function J(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