1 files changed, 134 insertions, 0 deletions
diff --git a/library/moment/src/lib/units/day-of-week.js b/library/moment/src/lib/units/day-of-week.js
new file mode 100644
index 000000000..a82f12630
--- /dev/null
+++ b/library/moment/src/lib/units/day-of-week.js
@@ -0,0 +1,134 @@
+import { addFormatToken } from '../format/format';
+import { addUnitAlias } from './aliases';
+import { addRegexToken, match1to2, matchWord } from '../parse/regex';
+import { addWeekParseToken } from '../parse/token';
+import toInt from '../utils/to-int';
+import { createLocal } from '../create/local';
+import getParsingFlags from '../create/parsing-flags';
+
+// FORMATTING
+
+addFormatToken('d', 0, 'do', 'day');
+
+addFormatToken('dd', 0, 0, function (format) {
+    return this.localeData().weekdaysMin(this, format);
+});
+
+addFormatToken('ddd', 0, 0, function (format) {
+    return this.localeData().weekdaysShort(this, format);
+});
+
+addFormatToken('dddd', 0, 0, function (format) {
+    return this.localeData().weekdays(this, format);
+});
+
+addFormatToken('e', 0, 0, 'weekday');
+addFormatToken('E', 0, 0, 'isoWeekday');
+
+// ALIASES
+
+addUnitAlias('day', 'd');
+addUnitAlias('weekday', 'e');
+addUnitAlias('isoWeekday', 'E');
+
+// PARSING
+
+addRegexToken('d',    match1to2);
+addRegexToken('e',    match1to2);
+addRegexToken('E',    match1to2);
+addRegexToken('dd',   matchWord);
+addRegexToken('ddd',  matchWord);
+addRegexToken('dddd', matchWord);
+
+addWeekParseToken(['dd', 'ddd', 'dddd'], function (input, week, config) {
+    var weekday = config._locale.weekdaysParse(input);
+    // if we didn't get a weekday name, mark the date as invalid
+    if (weekday != null) {
+        week.d = weekday;
+    } else {
+        getParsingFlags(config).invalidWeekday = input;
+    }
+});
+
+addWeekParseToken(['d', 'e', 'E'], function (input, week, config, token) {
+    week[token] = toInt(input);
+});
+
+// HELPERS
+
+function parseWeekday(input, locale) {
+    if (typeof input !== 'string') {
+        return input;
+    }
+
+    if (!isNaN(input)) {
+        return parseInt(input, 10);
+    }
+
+    input = locale.weekdaysParse(input);
+    if (typeof input === 'number') {
+        return input;
+    }
+
+    return null;
+}
+
+// LOCALES
+
+export var defaultLocaleWeekdays = 'Sunday_Monday_Tuesday_Wednesday_Thursday_Friday_Saturday'.split('_');
+export function localeWeekdays (m) {
+    return this._weekdays[m.day()];
+}
+
+export var defaultLocaleWeekdaysShort = 'Sun_Mon_Tue_Wed_Thu_Fri_Sat'.split('_');
+export function localeWeekdaysShort (m) {
+    return this._weekdaysShort[m.day()];
+}
+
+export var defaultLocaleWeekdaysMin = 'Su_Mo_Tu_We_Th_Fr_Sa'.split('_');
+export function localeWeekdaysMin (m) {
+    return this._weekdaysMin[m.day()];
+}
+
+export function localeWeekdaysParse (weekdayName) {
+    var i, mom, regex;
+
+    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 = createLocal([2000, 1]).day(i);
+            regex = '^' + this.weekdays(mom, '') + '|^' + this.weekdaysShort(mom, '') + '|^' + this.weekdaysMin(mom, '');
+            this._weekdaysParse[i] = new RegExp(regex.replace('.', ''), 'i');
+        }
+        // test the regex
+        if (this._weekdaysParse[i].test(weekdayName)) {
+            return i;
+        }
+    }
+}
+
+// MOMENTS
+
+export function getSetDayOfWeek (input) {
+    var day = this._isUTC ? this._d.getUTCDay() : this._d.getDay();
+    if (input != null) {
+        input = parseWeekday(input, this.localeData());
+        return this.add(input - day, 'd');
+    } else {
+        return day;
+    }
+}
+
+export function getSetLocaleDayOfWeek (input) {
+    var weekday = (this.day() + 7 - this.localeData()._week.dow) % 7;
+    return input == null ? weekday : this.add(input - weekday, 'd');
+}
+
+export function getSetISODayOfWeek (input) {
+    // behaves the same as moment#day except
+    // as a getter, returns 7 instead of 0 (1-7 range instead of 0-6)
+    // as a setter, sunday should belong to the previous week.
+    return input == null ? this.day() || 7 : this.day(this.day() % 7 ? input : input - 7);
+}