40 lines
1.6 KiB
JavaScript
40 lines
1.6 KiB
JavaScript
const getTimezoneOffset = (timezone, date)=>{
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try {
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const offsetPart = new Intl.DateTimeFormat('en', {
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timeZone: timezone,
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timeZoneName: 'longOffset'
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}).formatToParts(date).find((part)=>part.type === 'timeZoneName');
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const offset = offsetPart ? offsetPart.value : '';
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// We want to show time based on UTC, not GMT so we swap that.
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let utcOffset = offset.replace('GMT', 'UTC');
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// For perfect UTC (UTC+0:00) we only get the string UTC, So we need to append the 0's.
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if (!utcOffset.includes('+') && !utcOffset.includes('-')) {
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utcOffset = `${utcOffset}+00:00`;
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}
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return utcOffset;
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} catch (error) {
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// When timezone is invalid we catch the error and return empty to don't break the app
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return '';
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}
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};
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const getTimezones = (selectedDate)=>{
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const timezoneList = Intl.supportedValuesOf('timeZone').map((timezone)=>{
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// Timezone will be in the format GMT${OFFSET} where offset could be nothing,
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// a four digit string e.g. +05:00 or -08:00
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const utcOffset = getTimezoneOffset(timezone, selectedDate);
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// Offset and timezone are concatenated with '&', so to split and save the required timezone in DB
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return {
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offset: utcOffset,
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value: `${utcOffset}&${timezone}`
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};
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});
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const systemTimezone = timezoneList.find((timezone)=>timezone.value.split('&')[1] === Intl.DateTimeFormat().resolvedOptions().timeZone);
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return {
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timezoneList,
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systemTimezone
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};
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};
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export { getTimezoneOffset, getTimezones };
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//# sourceMappingURL=time.mjs.map
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