mirror of
https://github.com/kremalicious/metamask-extension.git
synced 2024-11-23 18:41:38 +01:00
26 lines
951 B
JavaScript
26 lines
951 B
JavaScript
const extension = require('extensionizer')
|
|
const promisify = require('pify')
|
|
const allLocales = require('../../_locales/index.json')
|
|
|
|
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 () {
|
|
const userPreferredLocaleCodes = await promisify(
|
|
extension.i18n.getAcceptLanguages,
|
|
{ errorFirst: false }
|
|
)()
|
|
const firstPreferredLangCode = userPreferredLocaleCodes
|
|
.map(code => code.toLowerCase())
|
|
.find(code => existingLocaleCodes.includes(code))
|
|
return firstPreferredLangCode || 'en'
|
|
}
|
|
|
|
module.exports = getFirstPreferredLangCode
|