37 lines
1.1 KiB
JavaScript
37 lines
1.1 KiB
JavaScript
import homepages from 'homepages';
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import SUPPORTED_BROWSER_LANGUAGES from 'constants/supported_browser_languages';
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const DEFAULT_LANG = 'en';
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export const getDefaultLanguage = () => {
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const browserLanguage = window.navigator.language;
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return SUPPORTED_BROWSER_LANGUAGES[browserLanguage] || DEFAULT_LANG;
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};
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// If homepages has a key "zh-Hant" return that, otherwise return "zh", otherwise "en"
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export const getDefaultHomepageKey = () => {
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const language = getDefaultLanguage();
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const keys = Object.keys(homepages);
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if (keys.includes(language)) {
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return language;
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} else if (keys.includes(language.slice(0, 2))) {
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return language.slice(0, 2);
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} else {
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return DEFAULT_LANG;
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}
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};
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/**
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* Sorts the language map by their native representation (not by language code).
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*
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* @param languages The language map to sort, e.g. "{ 'ja': '日本語', ... }"
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* @returns {[string, string][]}
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*/
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export function sortLanguageMap(languages) {
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return Object.entries(languages).sort((a, b) => {
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const lhs = String(a[1]);
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const rhs = String(b[1]);
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if (lhs < rhs) return -1;
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if (lhs > rhs) return 1;
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return 0;
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});
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}
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