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strftime.js
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strftime.js
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//
// strftime
// github.com/samsonjs/strftime
// @_sjs
//
// Copyright 2010 - 2021 Sami Samhuri <sami@samhuri.net>
//
// MIT License
// http://sjs.mit-license.org
//
; (function () {
var Locales = {
de_DE: {
identifier: 'de-DE',
days: ['Sonntag', 'Montag', 'Dienstag', 'Mittwoch', 'Donnerstag', 'Freitag', 'Samstag'],
shortDays: ['So', 'Mo', 'Di', 'Mi', 'Do', 'Fr', 'Sa'],
months: ['Januar', 'Februar', 'März', 'April', 'Mai', 'Juni', 'Juli', 'August', 'September', 'Oktober', 'November', 'Dezember'],
shortMonths: ['Jan', 'Feb', 'Mär', 'Apr', 'Mai', 'Jun', 'Jul', 'Aug', 'Sep', 'Okt', 'Nov', 'Dez'],
AM: 'AM',
PM: 'PM',
am: 'am',
pm: 'pm',
formats: {
c: '%a %d %b %Y %X %Z',
D: '%d.%m.%Y',
F: '%Y-%m-%d',
R: '%H:%M',
r: '%I:%M:%S %p',
T: '%H:%M:%S',
v: '%e-%b-%Y',
X: '%T',
x: '%D'
}
},
en_CA: {
identifier: 'en-CA',
days: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
shortDays: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
months: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
shortMonths: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
ordinalSuffixes: [
'st', 'nd', 'rd', 'th', 'th', 'th', 'th', 'th', 'th', 'th',
'th', 'th', 'th', 'th', 'th', 'th', 'th', 'th', 'th', 'th',
'st', 'nd', 'rd', 'th', 'th', 'th', 'th', 'th', 'th', 'th',
'st'
],
AM: 'AM',
PM: 'PM',
am: 'am',
pm: 'pm',
formats: {
c: '%a %d %b %Y %X %Z',
D: '%d/%m/%y',
F: '%Y-%m-%d',
R: '%H:%M',
r: '%I:%M:%S %p',
T: '%H:%M:%S',
v: '%e-%b-%Y',
X: '%r',
x: '%D'
}
},
en_US: {
identifier: 'en-US',
days: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
shortDays: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
months: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
shortMonths: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
ordinalSuffixes: [
'st', 'nd', 'rd', 'th', 'th', 'th', 'th', 'th', 'th', 'th',
'th', 'th', 'th', 'th', 'th', 'th', 'th', 'th', 'th', 'th',
'st', 'nd', 'rd', 'th', 'th', 'th', 'th', 'th', 'th', 'th',
'st'
],
AM: 'AM',
PM: 'PM',
am: 'am',
pm: 'pm',
formats: {
c: '%a %d %b %Y %X %Z',
D: '%m/%d/%y',
F: '%Y-%m-%d',
R: '%H:%M',
r: '%I:%M:%S %p',
T: '%H:%M:%S',
v: '%e-%b-%Y',
X: '%r',
x: '%D'
}
},
es_MX: {
identifier: 'es-MX',
days: ['domingo', 'lunes', 'martes', 'miércoles', 'jueves', 'viernes', 'sábado'],
shortDays: ['dom', 'lun', 'mar', 'mié', 'jue', 'vie', 'sáb'],
months: ['enero', 'febrero', 'marzo', 'abril', 'mayo', 'junio', 'julio', 'agosto', 'septiembre', 'octubre', 'noviembre', 'diciembre'],
shortMonths: ['ene', 'feb', 'mar', 'abr', 'may', 'jun', 'jul', 'ago', 'sep', 'oct', 'nov', 'dic'],
AM: 'AM',
PM: 'PM',
am: 'am',
pm: 'pm',
formats: {
c: '%a %d %b %Y %X %Z',
D: '%d/%m/%Y',
F: '%Y-%m-%d',
R: '%H:%M',
r: '%I:%M:%S %p',
T: '%H:%M:%S',
v: '%e-%b-%Y',
X: '%T',
x: '%D'
}
},
fr_FR: {
identifier: 'fr-FR',
days: ['dimanche', 'lundi', 'mardi', 'mercredi', 'jeudi', 'vendredi', 'samedi'],
shortDays: ['dim.', 'lun.', 'mar.', 'mer.', 'jeu.', 'ven.', 'sam.'],
months: ['janvier', 'février', 'mars', 'avril', 'mai', 'juin', 'juillet', 'août', 'septembre', 'octobre', 'novembre', 'décembre'],
shortMonths: ['janv.', 'févr.', 'mars', 'avril', 'mai', 'juin', 'juil.', 'août', 'sept.', 'oct.', 'nov.', 'déc.'],
AM: 'AM',
PM: 'PM',
am: 'am',
pm: 'pm',
formats: {
c: '%a %d %b %Y %X %Z',
D: '%d/%m/%Y',
F: '%Y-%m-%d',
R: '%H:%M',
r: '%I:%M:%S %p',
T: '%H:%M:%S',
v: '%e-%b-%Y',
X: '%T',
x: '%D'
}
},
it_IT: {
identifier: 'it-IT',
days: ['domenica', 'lunedì', 'martedì', 'mercoledì', 'giovedì', 'venerdì', 'sabato'],
shortDays: ['dom', 'lun', 'mar', 'mer', 'gio', 'ven', 'sab'],
months: ['gennaio', 'febbraio', 'marzo', 'aprile', 'maggio', 'giugno', 'luglio', 'agosto', 'settembre', 'ottobre', 'novembre', 'dicembre'],
shortMonths: ['gen', 'feb', 'mar', 'apr', 'mag', 'giu', 'lug', 'ago', 'set', 'ott', 'nov', 'dic'],
AM: 'AM',
PM: 'PM',
am: 'am',
pm: 'pm',
formats: {
c: '%a %d %b %Y %X %Z',
D: '%d/%m/%Y',
F: '%Y-%m-%d',
R: '%H:%M',
r: '%I:%M:%S %p',
T: '%H:%M:%S',
v: '%e-%b-%Y',
X: '%T',
x: '%D'
}
},
nl_NL: {
identifier: 'nl-NL',
days: ['zondag', 'maandag', 'dinsdag', 'woensdag', 'donderdag', 'vrijdag', 'zaterdag'],
shortDays: ['zo', 'ma', 'di', 'wo', 'do', 'vr', 'za'],
months: ['januari', 'februari', 'maart', 'april', 'mei', 'juni', 'juli', 'augustus', 'september', 'oktober', 'november', 'december'],
shortMonths: ['jan', 'feb', 'mrt', 'apr', 'mei', 'jun', 'jul', 'aug', 'sep', 'okt', 'nov', 'dec'],
AM: 'AM',
PM: 'PM',
am: 'am',
pm: 'pm',
formats: {
c: '%a %d %b %Y %X %Z',
D: '%d-%m-%y',
F: '%Y-%m-%d',
R: '%H:%M',
r: '%I:%M:%S %p',
T: '%H:%M:%S',
v: '%e-%b-%Y',
X: '%T',
x: '%D'
}
},
pt_BR: {
identifier: 'pt-BR',
days: ['domingo', 'segunda', 'terça', 'quarta', 'quinta', 'sexta', 'sábado'],
shortDays: ['Dom', 'Seg', 'Ter', 'Qua', 'Qui', 'Sex', 'Sáb'],
months: ['janeiro', 'fevereiro', 'março', 'abril', 'maio', 'junho', 'julho', 'agosto', 'setembro', 'outubro', 'novembro', 'dezembro'],
shortMonths: ['Jan', 'Fev', 'Mar', 'Abr', 'Mai', 'Jun', 'Jul', 'Ago', 'Set', 'Out', 'Nov', 'Dez'],
AM: 'AM',
PM: 'PM',
am: 'am',
pm: 'pm',
formats: {
c: '%a %d %b %Y %X %Z',
D: '%d-%m-%Y',
F: '%Y-%m-%d',
R: '%H:%M',
r: '%I:%M:%S %p',
T: '%H:%M:%S',
v: '%e-%b-%Y',
X: '%T',
x: '%D'
}
},
ru_RU: {
identifier: 'ru-RU',
days: ['Воскресенье', 'Понедельник', 'Вторник', 'Среда', 'Четверг', 'Пятница', 'Суббота'],
shortDays: ['Вс', 'Пн', 'Вт', 'Ср', 'Чт', 'Пт', 'Сб'],
months: ['Январь', 'Февраль', 'Март', 'Апрель', 'Май', 'Июнь', 'Июль', 'Август', 'Сентябрь', 'Октябрь', 'Ноябрь', 'Декабрь'],
shortMonths: ['янв', 'фев', 'мар', 'апр', 'май', 'июн', 'июл', 'авг', 'сен', 'окт', 'ноя', 'дек'],
AM: 'AM',
PM: 'PM',
am: 'am',
pm: 'pm',
formats: {
c: '%a %d %b %Y %X',
D: '%d.%m.%y',
F: '%Y-%m-%d',
R: '%H:%M',
r: '%I:%M:%S %p',
T: '%H:%M:%S',
v: '%e-%b-%Y',
X: '%T',
x: '%D'
}
},
tr_TR: {
identifier: 'tr-TR',
days: ['Pazar', 'Pazartesi', 'Salı', 'Çarşamba', 'Perşembe', 'Cuma', 'Cumartesi'],
shortDays: ['Paz', 'Pzt', 'Sal', 'Çrş', 'Prş', 'Cum', 'Cts'],
months: ['Ocak', 'Şubat', 'Mart', 'Nisan', 'Mayıs', 'Haziran', 'Temmuz', 'Ağustos', 'Eylül', 'Ekim', 'Kasım', 'Aralık'],
shortMonths: ['Oca', 'Şub', 'Mar', 'Nis', 'May', 'Haz', 'Tem', 'Ağu', 'Eyl', 'Eki', 'Kas', 'Ara'],
AM: 'ÖÖ',
PM: 'ÖS',
am: 'ÖÖ',
pm: 'ÖS',
formats: {
c: '%a %d %b %Y %X %Z',
D: '%d-%m-%Y',
F: '%Y-%m-%d',
R: '%H:%M',
r: '%I:%M:%S %p',
T: '%H:%M:%S',
v: '%e-%b-%Y',
X: '%T',
x: '%D'
}
},
// By michaeljayt<michaeljayt@gmail.com>
// https://github.com/michaeljayt/strftime/commit/bcb4c12743811d51e568175aa7bff3fd2a77cef3
zh_CN: {
identifier: 'zh-CN',
days: ['星期日', '星期一', '星期二', '星期三', '星期四', '星期五', '星期六'],
shortDays: ['日', '一', '二', '三', '四', '五', '六'],
months: ['一月份', '二月份', '三月份', '四月份', '五月份', '六月份', '七月份', '八月份', '九月份', '十月份', '十一月份', '十二月份'],
shortMonths: ['一月', '二月', '三月', '四月', '五月', '六月', '七月', '八月', '九月', '十月', '十一月', '十二月'],
AM: '上午',
PM: '下午',
am: '上午',
pm: '下午',
formats: {
c: '%a %d %b %Y %X %Z',
D: '%d/%m/%y',
F: '%Y-%m-%d',
R: '%H:%M',
r: '%I:%M:%S %p',
T: '%H:%M:%S',
v: '%e-%b-%Y',
X: '%r',
x: '%D'
}
}
};
var DefaultLocale = Locales['en_US'],
defaultStrftime = new Strftime(DefaultLocale, 0, false),
isCommonJS = typeof module !== 'undefined',
namespace;
// CommonJS / Node module
if (isCommonJS) {
namespace = module.exports = defaultStrftime;
}
// Browsers and other environments
else {
// Get the global object. Works in ES3, ES5, and ES5 strict mode.
namespace = (function () { return this || (1, eval)('this'); }());
namespace.strftime = defaultStrftime;
}
// Polyfill Date.now for old browsers.
if (typeof Date.now !== 'function') {
Date.now = function () {
return +new Date();
};
}
function Strftime(locale, customTimezoneOffset, useUtcTimezone) {
var _locale = locale || DefaultLocale,
_customTimezoneOffset = customTimezoneOffset || 0,
_useUtcBasedDate = useUtcTimezone || false,
// we store unix timestamp value here to not create new Date() each iteration (each millisecond)
// Date.now() is 2 times faster than new Date()
// while millisecond precise is enough here
// this could be very helpful when strftime triggered a lot of times one by one
_cachedDateTimestamp = 0,
_cachedDate;
function _strftime(format, date) {
var timestamp;
if (!date) {
var currentTimestamp = Date.now();
if (currentTimestamp > _cachedDateTimestamp) {
_cachedDateTimestamp = currentTimestamp;
_cachedDate = new Date(_cachedDateTimestamp);
timestamp = _cachedDateTimestamp;
if (_useUtcBasedDate) {
// how to avoid duplication of date instantiation for utc here?
// we tied to getTimezoneOffset of the current date
_cachedDate = new Date(_cachedDateTimestamp + getTimestampToUtcOffsetFor(_cachedDate) + _customTimezoneOffset);
}
}
else {
timestamp = _cachedDateTimestamp;
}
date = _cachedDate;
}
else {
timestamp = date.getTime();
if (_useUtcBasedDate) {
var utcOffset = getTimestampToUtcOffsetFor(date);
date = new Date(timestamp + utcOffset + _customTimezoneOffset);
// If we've crossed a DST boundary with this calculation we need to
// adjust the new date accordingly or it will be off by an hour in UTC.
if (getTimestampToUtcOffsetFor(date) !== utcOffset) {
var newUTCOffset = getTimestampToUtcOffsetFor(date);
date = new Date(timestamp + newUTCOffset + _customTimezoneOffset);
}
}
}
return _processFormat(format, date, _locale, timestamp);
}
function _processFormat(format, date, locale, timestamp) {
var resultString = '',
padding = null,
isInScope = false,
length = format.length,
extendedTZ = false;
for (var i = 0; i < length; i++) {
var currentCharCode = format.charCodeAt(i);
if (isInScope === true) {
// '-'
if (currentCharCode === 45) {
padding = '';
continue;
}
// '_'
else if (currentCharCode === 95) {
padding = ' ';
continue;
}
// '0'
else if (currentCharCode === 48) {
padding = '0';
continue;
}
// ':'
else if (currentCharCode === 58) {
if (extendedTZ) {
warn("[WARNING] detected use of unsupported %:: or %::: modifiers to strftime");
}
extendedTZ = true;
continue;
}
switch (currentCharCode) {
// Examples for new Date(0) in GMT
// '%'
// case '%':
case 37:
resultString += '%';
break;
// 'Thursday'
// case 'A':
case 65:
resultString += locale.days[date.getDay()];
break;
// 'January'
// case 'B':
case 66:
resultString += locale.months[date.getMonth()];
break;
// '19'
// case 'C':
case 67:
resultString += padTill2(Math.floor(date.getFullYear() / 100), padding);
break;
// '01/01/70'
// case 'D':
case 68:
resultString += _processFormat(locale.formats.D, date, locale, timestamp);
break;
// '1970-01-01'
// case 'F':
case 70:
resultString += _processFormat(locale.formats.F, date, locale, timestamp);
break;
// '00'
// case 'H':
case 72:
resultString += padTill2(date.getHours(), padding);
break;
// '12'
// case 'I':
case 73:
resultString += padTill2(hours12(date.getHours()), padding);
break;
// '000'
// case 'L':
case 76:
resultString += padTill3(Math.floor(timestamp % 1000));
break;
// '00'
// case 'M':
case 77:
resultString += padTill2(date.getMinutes(), padding);
break;
// 'am'
// case 'P':
case 80:
resultString += date.getHours() < 12 ? locale.am : locale.pm;
break;
// '00:00'
// case 'R':
case 82:
resultString += _processFormat(locale.formats.R, date, locale, timestamp);
break;
// '00'
// case 'S':
case 83:
resultString += padTill2(date.getSeconds(), padding);
break;
// '00:00:00'
// case 'T':
case 84:
resultString += _processFormat(locale.formats.T, date, locale, timestamp);
break;
// '00'
// case 'U':
case 85:
resultString += padTill2(weekNumber(date, 'sunday'), padding);
break;
// '00'
// case 'W':
case 87:
resultString += padTill2(weekNumber(date, 'monday'), padding);
break;
// '16:00:00'
// case 'X':
case 88:
resultString += _processFormat(locale.formats.X, date, locale, timestamp);
break;
// '1970'
// case 'Y':
case 89:
resultString += date.getFullYear();
break;
// 'GMT'
// case 'Z':
case 90:
if (_useUtcBasedDate && _customTimezoneOffset === 0) {
resultString += "GMT";
}
else {
var tzName = getTimezoneName(date);
resultString += tzName || '';
}
break;
// 'Thu'
// case 'a':
case 97:
resultString += locale.shortDays[date.getDay()];
break;
// 'Jan'
// case 'b':
case 98:
resultString += locale.shortMonths[date.getMonth()];
break;
// ''
// case 'c':
case 99:
resultString += _processFormat(locale.formats.c, date, locale, timestamp);
break;
// '01'
// case 'd':
case 100:
resultString += padTill2(date.getDate(), padding);
break;
// ' 1'
// case 'e':
case 101:
resultString += padTill2(date.getDate(), padding == null ? ' ' : padding);
break;
// 'Jan'
// case 'h':
case 104:
resultString += locale.shortMonths[date.getMonth()];
break;
// '000'
// case 'j':
case 106:
var y = new Date(date.getFullYear(), 0, 1);
var day = Math.ceil((date.getTime() - y.getTime()) / (1000 * 60 * 60 * 24));
resultString += padTill3(day);
break;
// ' 0'
// case 'k':
case 107:
resultString += padTill2(date.getHours(), padding == null ? ' ' : padding);
break;
// '12'
// case 'l':
case 108:
resultString += padTill2(hours12(date.getHours()), padding == null ? ' ' : padding);
break;
// '01'
// case 'm':
case 109:
resultString += padTill2(date.getMonth() + 1, padding);
break;
// '\n'
// case 'n':
case 110:
resultString += '\n';
break;
// '1st'
// case 'o':
case 111:
// Try to use an ordinal suffix from the locale, but fall back to using the old
// function for compatibility with old locales that lack them.
var day = date.getDate();
if (locale.ordinalSuffixes) {
resultString += String(day) + (locale.ordinalSuffixes[day - 1] || ordinal(day));
}
else {
resultString += String(day) + ordinal(day);
}
break;
// 'AM'
// case 'p':
case 112:
resultString += date.getHours() < 12 ? locale.AM : locale.PM;
break;
// '12:00:00 AM'
// case 'r':
case 114:
resultString += _processFormat(locale.formats.r, date, locale, timestamp);
break;
// '0'
// case 's':
case 115:
resultString += Math.floor(timestamp / 1000);
break;
// '\t'
// case 't':
case 116:
resultString += '\t';
break;
// '4'
// case 'u':
case 117:
var day = date.getDay();
resultString += day === 0 ? 7 : day;
break; // 1 - 7, Monday is first day of the week
// ' 1-Jan-1970'
// case 'v':
case 118:
resultString += _processFormat(locale.formats.v, date, locale, timestamp);
break;
// '4'
// case 'w':
case 119:
resultString += date.getDay();
break; // 0 - 6, Sunday is first day of the week
// '12/31/69'
// case 'x':
case 120:
resultString += _processFormat(locale.formats.x, date, locale, timestamp);
break;
// '70'
// case 'y':
case 121:
resultString += padTill2(date.getFullYear() % 100, padding);
break;
// '+0000'
// case 'z':
case 122:
if (_useUtcBasedDate && _customTimezoneOffset === 0) {
resultString += extendedTZ ? "+00:00" : "+0000";
}
else {
var off;
if (_customTimezoneOffset !== 0) {
off = _customTimezoneOffset / (60 * 1000);
}
else {
off = -date.getTimezoneOffset();
}
var sign = off < 0 ? '-' : '+';
var sep = extendedTZ ? ':' : '';
var hours = Math.floor(Math.abs(off / 60));
var mins = Math.abs(off % 60);
resultString += sign + padTill2(hours) + sep + padTill2(mins);
}
break;
default:
if (isInScope) {
resultString += '%';
}
resultString += format[i];
break;
}
padding = null;
isInScope = false;
continue;
}
// '%'
if (currentCharCode === 37) {
isInScope = true;
continue;
}
resultString += format[i];
}
return resultString;
}
var strftime = _strftime;
strftime.localize = function (locale) {
return new Strftime(locale || _locale, _customTimezoneOffset, _useUtcBasedDate);
};
strftime.localizeByIdentifier = function (localeIdentifier) {
var locale = Locales[localeIdentifier];
if (!locale) {
warn('[WARNING] No locale found with identifier "' + localeIdentifier + '".');
return strftime;
}
return strftime.localize(locale);
};
strftime.timezone = function (timezone) {
var customTimezoneOffset = _customTimezoneOffset;
var useUtcBasedDate = _useUtcBasedDate;
var timezoneType = typeof timezone;
if (timezoneType === 'number' || timezoneType === 'string') {
useUtcBasedDate = true;
// ISO 8601 format timezone string, [-+]HHMM
if (timezoneType === 'string') {
var sign = timezone[0] === '-' ? -1 : 1,
hours = parseInt(timezone.slice(1, 3), 10),
minutes = parseInt(timezone.slice(3, 5), 10);
customTimezoneOffset = sign * ((60 * hours) + minutes) * 60 * 1000;
// in minutes: 420
}
else if (timezoneType === 'number') {
customTimezoneOffset = timezone * 60 * 1000;
}
}
return new Strftime(_locale, customTimezoneOffset, useUtcBasedDate);
};
strftime.utc = function () {
return new Strftime(_locale, _customTimezoneOffset, true);
};
return strftime;
}
function padTill2(numberToPad, paddingChar) {
if (paddingChar === '' || numberToPad > 9) {
return '' + numberToPad;
}
if (paddingChar == null) {
paddingChar = '0';
}
return paddingChar + numberToPad;
}
function padTill3(numberToPad) {
if (numberToPad > 99) {
return numberToPad;
}
if (numberToPad > 9) {
return '0' + numberToPad;
}
return '00' + numberToPad;
}
function hours12(hour) {
if (hour === 0) {
return 12;
}
else if (hour > 12) {
return hour - 12;
}
return hour;
}
// firstWeekday: 'sunday' or 'monday', default is 'sunday'
//
// Pilfered & ported from Ruby's strftime implementation.
function weekNumber(date, firstWeekday) {
firstWeekday = firstWeekday || 'sunday';
// This works by shifting the weekday back by one day if we
// are treating Monday as the first day of the week.
var weekday = date.getDay();
if (firstWeekday === 'monday') {
if (weekday === 0) // Sunday
weekday = 6;
else
weekday--;
}
var firstDayOfYearUtc = Date.UTC(date.getFullYear(), 0, 1),
dateUtc = Date.UTC(date.getFullYear(), date.getMonth(), date.getDate()),
yday = Math.floor((dateUtc - firstDayOfYearUtc) / 86400000),
weekNum = (yday + 7 - weekday) / 7;
return Math.floor(weekNum);
}
// Get the ordinal suffix for a number: st, nd, rd, or th
function ordinal(number) {
var i = number % 10;
var ii = number % 100;
if ((ii >= 11 && ii <= 13) || i === 0 || i >= 4) {
return 'th';
}
switch (i) {
case 1: return 'st';
case 2: return 'nd';
case 3: return 'rd';
}
}
function getTimestampToUtcOffsetFor(date) {
return (date.getTimezoneOffset() || 0) * 60000;
}
// Tries to get a short timezone name using Date.toLocaleString, falling back on the platform default
// using Date.toString if necessary.
function getTimezoneName(date, localeIdentifier) {
return getShortTimezoneName(date, localeIdentifier) || getDefaultTimezoneName(date);
}
// Unfortunately this returns GMT+2 when running with `TZ=Europe/Amsterdam node test.js` so it's not
// perfect.
function getShortTimezoneName(date, localeIdentifier) {
if (localeIdentifier == null) return null;
var tzString = date
.toLocaleString(localeIdentifier, { timeZoneName: 'short' })
.match(/\s([\w]+)$/);
return tzString && tzString[1];
}
// This varies by platform so it's not an ideal way to get the time zone name. On most platforms it's
// a short name but in Node v10+ and Chrome 66+ it's a long name now. Prefer getShortTimezoneName(date)
// where possible.
function getDefaultTimezoneName(date) {
var tzString = date.toString().match(/\(([\w\s]+)\)/);
return tzString && tzString[1];
}
function warn(message) {
if (typeof console !== 'undefined' && typeof console.warn == 'function') {
console.warn(message)
}
}
}());