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import { normalizeI18nDefinitionMap } from '../i18n-normalizer/i18n-normalizer.js'
const emptyObj = Object.freeze({})
const initialDataStore = Object.freeze({
languages: emptyObj,
location: '',
})
/**
* Normalizes `StoreDataEntry.data`
* @param {StoreDataEntry} data - target data
* @returns {{ location: string; languages: NormalizedI18nDefinitionMap }} normalized data
*/
function normalizeTranslationData (data) {
const normalizedLanguages = normalizeI18nDefinitionMap(data.languages)
normalizedLanguages.errors.forEach((error) => console.error('Error on %s::%s, %s', data.location, error.path, error.message))
normalizedLanguages.warnings.forEach((error) => console.warn('Warning on %s::%s, %s', data.location, error.path, error.message))
return {
location: data.location,
languages: structuredClone(normalizedLanguages.result),
}
}
/** @type {WeakMap<TranslationStore, Record<string, Translations>>} */
const memoizedTranslationsMap = new WeakMap()
/**
*
* @param {TranslationStore} store - target store
* @returns {Record<string, Translations>} - memoized translations data
*/
function getMemoizedTranslations (store) {
const memoizedTranslations = memoizedTranslationsMap.get(store)
if (memoizedTranslations) {
return memoizedTranslations
}
/** @type {Record<string, Translations>} */
const newMemo = {}
memoizedTranslationsMap.set(store, newMemo)
return newMemo
}
/**
* @param {TranslationStore} store - target store
* @param {string} locale - target locale
* @returns {Promise<Translations>} translations on a specific locale
*/
const getTranslationsFromData = async (store, locale) => {
const computed = getMemoizedTranslations(store)
if (computed[locale]) {
return computed[locale]
}
const definition = store.data.languages[locale]
if (!definition) {
return {}
}
if (!Array.isArray(definition.import) || definition.import.length <= 0) {
return definition.translations
}
const translationsPromises = definition.import.map(extend => importTranslations(extend, store.data.location))
const translationsArray = await Promise.all(translationsPromises)
const importedTranslations = translationsArray.reduce((acc, translations) => ({ ...acc, ...translations }))
computed[locale] = {
...importedTranslations,
...definition.translations,
}
return computed[locale]
}
/** @type {TranslationStore} */
const StorePrototype = {
loadTranslations (data) {
this.data = normalizeTranslationData(data)
memoizedTranslationsMap.delete(this)
},
async translationsFromLanguage (locale) {
if (typeof locale === 'string') {
return await this.translationsFromLanguage(new Intl.Locale(locale))
}
const memoizedTranslations = getMemoizedTranslations(this)
if (memoizedTranslations[locale.baseName]) {
return memoizedTranslations[locale.baseName]
}
const languages = [locale.baseName]
const intlLang = locale.language
if (locale.region != null) {
const langRegion = `${intlLang}-${locale.region}`
if (!languages.includes(langRegion)) {
languages.push(langRegion)
}
}
if (!languages.includes(intlLang)) {
languages.push(intlLang)
}
const translationsPromises = languages.reverse().map(language => getTranslationsFromData(this, language))
const translationsArray = await Promise.all(translationsPromises)
const result = translationsArray.reduce((acc, translations) => ({ ...acc, ...translations }))
memoizedTranslations[locale.baseName] = result
return result
},
data: initialDataStore,
}
/**
* Creates a translation store
* @returns {TranslationStore} new translation store
*/
export function i18nTranslationStore () {
return Object.create(StorePrototype)
}
//= == Type declarations
/** @typedef {import('../i18n-normalizer/i18n-normalizer.js').I18nDefinitionMap} I18nDefinitionMap */
/** @typedef {import('../i18n-normalizer/i18n-normalizer.js').NormalizedI18nDefinitionMap} NormalizedI18nDefinitionMap */
/** @typedef {import('../i18n-normalizer/i18n-normalizer.js').Translations} Translations */
/**
* @typedef {object} StoreData
*
* Data of {@link TranslationStore}
* @property {NormalizedI18nDefinitionMap} languages - Store data languages
* @property {string} location - location of stored data, used to get relative path to load additional i18n files
*/
/**
* @typedef {object} StoreDataEntry
*
* Data to used to save in {@link TranslationStore}, it will be normalized to {@link StoreData} on {@link TranslationStore.loadTranslations} call
* @property {I18nDefinitionMap} languages - Store data languages
* @property {string} location - location of stored data, used to get relative path to load additional i18n files
*/
/**
* @typedef {object} TranslationStore
*
* Data to used to save in {@link TranslationStore}, it will be normalized to {@link StoreData} on {@link TranslationStore.loadTranslations} call
* @property {(data: StoreDataEntry) => void} loadTranslations - loads translations in data
* @property {TranslationsFromLanguage} translationsFromLanguage - get stored translations from a locale
* @property {StoreData} data - Store data where all information is saved with loadTranslations()
*/
/**
* @callback TranslationsFromLanguage
* @param {string | Intl.Locale} locale - Intl.Locale of a string definition
* @returns {Promise<Translations>} empty locale, if locale string invalid, otherwise all translations from language
*/
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