@talend/react-forms
Version:
React forms library based on json schema form.
64 lines (62 loc) • 2.39 kB
JavaScript
import { date as dateUtils } from '@talend/utils';
/**
* Get the sorted list of timezones in a given language.
* Sort is done by UTC offset first, then by timezone name.
* @param {String} lang
* @returns {Array}
*/
import { get } from "lodash";
export function getTimezones(lang, cldrTimezones) {
const timezonesKey = lang in cldrTimezones ? lang : 'en';
if (!(timezonesKey in cldrTimezones)) {
throw new Error(`No cldr translation provided for language "${timezonesKey}"`);
}
const zones = cldrTimezones[timezonesKey].main[timezonesKey].dates.timeZoneNames.zone;
/**
* Build timezone info object
* @param {String} timezone
* @returns {Object}
*/
const getTimezoneInfo = (timezone, translatedName) => {
const timezoneName = translatedName || get(zones, `${timezone.replaceAll('/', '.')}.exemplarCity`, timezone);
const offset = dateUtils.getUTCOffset(timezone);
const name = `(UTC ${dateUtils.formatReadableUTCOffset(offset)}) ${timezoneName}`;
return {
name,
timezoneName,
offset,
value: timezone
};
};
return Object.keys(zones).reduce((collectedTimezones, region) => {
const newTimezones = [];
if (region === 'Etc') {
// Only keep "Etc/UTC" for "Etc" region
newTimezones.push(getTimezoneInfo('Etc/UTC', zones.Etc.UTC.long.standard));
} else {
Object.keys(zones[region]).forEach(city => {
if ('exemplarCity' in zones[region][city] || city === 'Honolulu' // Honolulu contains sub-keys but they are deprecated in IANA references ("HST"/"HDT")
) {
// Ex: Europe/Paris, Asia/Yerevan ...
const timezone = `${region}/${city}`;
newTimezones.push(getTimezoneInfo(timezone));
} else {
// Ex: America/Argentina/Buenos_Aires ...
Object.keys(zones[region][city]).forEach(city2 => {
let timezone = `${region}/${city}`;
if (city2 !== 'long') {
timezone = `${region}/${city}/${city2}`;
}
newTimezones.push(getTimezoneInfo(timezone));
});
}
});
}
return [...collectedTimezones, ...newTimezones];
}, [])
// Sort by UTC offset, then by name
.sort((a, b) => {
return a.offset !== b.offset ? a.offset - b.offset : a.timezoneName.localeCompare(b.timezoneName);
});
}
//# sourceMappingURL=TimezoneList.utils.js.map