18 lines
578 B
JavaScript
18 lines
578 B
JavaScript
/**
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* https://tc39.es/ecma402/#sec-canonicalizetimezonename
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* @param tz
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*/
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export function CanonicalizeTimeZoneName(tz, _a) {
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var zoneNames = _a.zoneNames, uppercaseLinks = _a.uppercaseLinks;
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var uppercasedTz = tz.toUpperCase();
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var uppercasedZones = zoneNames.reduce(function (all, z) {
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all[z.toUpperCase()] = z;
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return all;
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}, {});
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var ianaTimeZone = uppercaseLinks[uppercasedTz] || uppercasedZones[uppercasedTz];
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if (ianaTimeZone === 'Etc/UTC' || ianaTimeZone === 'Etc/GMT') {
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return 'UTC';
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}
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return ianaTimeZone;
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}
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