mirror of
https://github.com/kremalicious/metamask-extension.git
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89ef78674d
Three uses of `hasOwnProperty.call` have been replaced with simpler alternatives. I did this because I found this convention confusing. The `ComposableObservableStore` changes required adding a check for whether the `config` is defined, because the old syntax would allow iterating over `undefined` as if it was an empty object. Functionally it should be identical. A new test was added to highlight this functionality.
47 lines
1.6 KiB
JavaScript
47 lines
1.6 KiB
JavaScript
import extension from 'extensionizer';
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import promisify from 'pify';
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import allLocales from '../../_locales/index.json';
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const getPreferredLocales = extension.i18n
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? promisify(extension.i18n.getAcceptLanguages, { errorFirst: false })
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: async () => [];
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// mapping some browsers return hyphen instead underscore in locale codes (e.g. zh_TW -> zh-tw)
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const existingLocaleCodes = {};
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allLocales.forEach((locale) => {
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if (locale && locale.code) {
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existingLocaleCodes[locale.code.toLowerCase().replace('_', '-')] =
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locale.code;
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}
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});
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/**
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* Returns a preferred language code, based on settings within the user's browser. If we have no translations for the
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* users preferred locales, 'en' is returned.
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*
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* @returns {Promise<string>} Promises a locale code, either one from the user's preferred list that we have a translation for, or 'en'
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*
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*/
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export default async function getFirstPreferredLangCode() {
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let userPreferredLocaleCodes;
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try {
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userPreferredLocaleCodes = await getPreferredLocales();
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} catch (e) {
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// Brave currently throws when calling getAcceptLanguages, so this handles that.
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userPreferredLocaleCodes = [];
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}
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// safeguard for Brave Browser until they implement chrome.i18n.getAcceptLanguages
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// https://github.com/MetaMask/metamask-extension/issues/4270
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if (!userPreferredLocaleCodes) {
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userPreferredLocaleCodes = [];
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}
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const firstPreferredLangCode = userPreferredLocaleCodes
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.map((code) => code.toLowerCase().replace('_', '-'))
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.find((code) => existingLocaleCodes[code] !== undefined);
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return existingLocaleCodes[firstPreferredLangCode] || 'en';
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}
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