Tldraw/packages/tlschema/src/translations.ts

66 wiersze
1.8 KiB
TypeScript

import { LANGUAGES } from './languages'
type TLListedTranslation = {
readonly locale: string
readonly label: string
}
type TLListedTranslations = TLListedTranslation[]
type TLTranslationLocale = TLListedTranslations[number]['locale']
/** @public */
export function getDefaultTranslationLocale(locales: readonly string[]): TLTranslationLocale {
for (const locale of locales) {
const supportedLocale = getSupportedLocale(locale)
if (supportedLocale) {
return supportedLocale
}
}
return 'en'
}
/** @public */
const DEFAULT_LOCALE_REGIONS: { [locale: string]: TLTranslationLocale } = {
zh: 'zh-cn',
pt: 'pt-br',
ko: 'ko-kr',
hi: 'hi-in',
}
/** @public */
function getSupportedLocale(locale: string): TLTranslationLocale | null {
// If we have an exact match, return it!
// (e.g. if the user has 'fr' and we have 'fr')
// (or if the user has 'pt-BR' and we have 'pt-br')
const exactMatch = LANGUAGES.find((t) => t.locale === locale.toLowerCase())
if (exactMatch) {
return exactMatch.locale
}
// Otherwise, we need to be more flexible...
const [language, region] = locale.split(/[-_]/).map((s) => s.toLowerCase())
// If the user's language has a region...
// let's try to find non-region-specific locale for them
// (e.g. if they have 'fr-CA' but we only have 'fr')
if (region) {
const languageMatch = LANGUAGES.find((t) => t.locale === language)
if (languageMatch) {
return languageMatch.locale
}
}
// If the user's language doesn't have a region...
// let's try to find a region-specific locale for them
// (e.g. if they have 'pt' but we only have 'pt-pt' or 'pt-br')
//
// In this case, we choose the hard-coded default region for that language
if (language in DEFAULT_LOCALE_REGIONS) {
return DEFAULT_LOCALE_REGIONS[language]
}
// Oh no! We don't have a translation for this language!
// Let's give up...
return null
}