Marc Mintel
5397309103
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22 lines
557 B
Plaintext
22 lines
557 B
Plaintext
/**
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* https://tc39.es/ecma402/#sec-bestavailablelocale
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* @param availableLocales
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* @param locale
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*/
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export function BestAvailableLocale(availableLocales, locale) {
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var candidate = locale;
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while (true) {
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if (availableLocales.indexOf(candidate) > -1) {
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return candidate;
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}
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var pos = candidate.lastIndexOf('-');
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if (!~pos) {
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return undefined;
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}
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if (pos >= 2 && candidate[pos - 2] === '-') {
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pos -= 2;
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}
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candidate = candidate.slice(0, pos);
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}
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}
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