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35 lines
1.2 KiB
Plaintext
35 lines
1.2 KiB
Plaintext
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.BestFitMatcher = BestFitMatcher;
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var utils_1 = require("./utils");
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/**
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* https://tc39.es/ecma402/#sec-bestfitmatcher
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* @param availableLocales
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* @param requestedLocales
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* @param getDefaultLocale
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*/
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function BestFitMatcher(availableLocales, requestedLocales, getDefaultLocale) {
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var foundLocale;
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var extension;
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var noExtensionLocales = [];
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var noExtensionLocaleMap = requestedLocales.reduce(function (all, l) {
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var noExtensionLocale = l.replace(utils_1.UNICODE_EXTENSION_SEQUENCE_REGEX, '');
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noExtensionLocales.push(noExtensionLocale);
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all[noExtensionLocale] = l;
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return all;
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}, {});
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var result = (0, utils_1.findBestMatch)(noExtensionLocales, availableLocales);
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if (result.matchedSupportedLocale && result.matchedDesiredLocale) {
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foundLocale = result.matchedSupportedLocale;
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extension =
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noExtensionLocaleMap[result.matchedDesiredLocale].slice(result.matchedDesiredLocale.length) || undefined;
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}
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if (!foundLocale) {
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return { locale: getDefaultLocale() };
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}
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return {
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locale: foundLocale,
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extension: extension,
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};
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}
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