You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
42 lines
1.4 KiB
42 lines
1.4 KiB
const extension = require('extensionizer')
|
|
const promisify = require('pify')
|
|
const allLocales = require('../../_locales/index.json')
|
|
|
|
const getPreferredLocales = extension.i18n ? promisify(
|
|
extension.i18n.getAcceptLanguages,
|
|
{ errorFirst: false }
|
|
) : async () => []
|
|
|
|
const existingLocaleCodes = allLocales.map(locale => locale.code.toLowerCase().replace('_', '-'))
|
|
|
|
/**
|
|
* Returns a preferred language code, based on settings within the user's browser. If we have no translations for the
|
|
* users preferred locales, 'en' is returned.
|
|
*
|
|
* @returns {Promise<string>} Promises a locale code, either one from the user's preferred list that we have a translation for, or 'en'
|
|
*
|
|
*/
|
|
async function getFirstPreferredLangCode () {
|
|
let userPreferredLocaleCodes
|
|
|
|
try {
|
|
userPreferredLocaleCodes = await getPreferredLocales()
|
|
} catch (e) {
|
|
// Brave currently throws when calling getAcceptLanguages, so this handles that.
|
|
userPreferredLocaleCodes = []
|
|
}
|
|
|
|
// safeguard for Brave Browser until they implement chrome.i18n.getAcceptLanguages
|
|
// https://github.com/MetaMask/metamask-extension/issues/4270
|
|
if (!userPreferredLocaleCodes){
|
|
userPreferredLocaleCodes = []
|
|
}
|
|
|
|
const firstPreferredLangCode = userPreferredLocaleCodes
|
|
.map(code => code.toLowerCase())
|
|
.find(code => existingLocaleCodes.includes(code))
|
|
return firstPreferredLangCode || 'en'
|
|
}
|
|
|
|
module.exports = getFirstPreferredLangCode
|
|
|
|
|