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import {getLocales as defaultGetLocales, Locale} from 'expo-localization'
import {dedupArray} from '#/lib/functions'
type LocalWithLanguageCode = Locale & {
languageCode: string
}
/**
* Normalized locales
*
* Handles legacy migration for Java devices.
*
* {@link https://github.com/bluesky-social/social-app/pull/4461}
* {@link https://xml.coverpages.org/iso639a.html}
*
* Convert Chinese language tags for Native.
*
* {@link https://datatracker.ietf.org/doc/html/rfc5646#appendix-A}
* {@link https://developer.apple.com/documentation/packagedescription/languagetag}
* {@link https://gist.github.com/amake/0ac7724681ac1c178c6f95a5b09f03ce#new-locales-vs-old-locales-chinese}
*/
export function getLocales() {
const locales = defaultGetLocales?.() ?? []
const output: LocalWithLanguageCode[] = []
for (const locale of locales) {
if (typeof locale.languageCode === 'string') {
if (locale.languageCode === 'in') {
// indonesian
locale.languageCode = 'id'
}
if (locale.languageCode === 'iw') {
// hebrew
locale.languageCode = 'he'
}
if (locale.languageCode === 'ji') {
// yiddish
locale.languageCode = 'yi'
}
}
if (typeof locale.languageTag === 'string') {
if (
locale.languageTag.startsWith('zh-Hans') ||
locale.languageTag === 'zh-CN'
) {
// Simplified Chinese to zh-Hans-CN
locale.languageTag = 'zh-Hans-CN'
}
if (
locale.languageTag.startsWith('zh-Hant') ||
locale.languageTag === 'zh-TW'
) {
// Traditional Chinese to zh-Hant-TW
locale.languageTag = 'zh-Hant-TW'
}
}
// @ts-ignore checked above
output.push(locale)
}
return output
}
export const deviceLocales = getLocales()
/**
* BCP-47 language tag without region e.g. array of 2-char lang codes
*
* {@link https://docs.expo.dev/versions/latest/sdk/localization/#locale}
*/
export const deviceLanguageCodes = dedupArray(
deviceLocales.map(l => l.languageCode),
)
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