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import IntlMessageFormat from 'intl-messageformat'
import { shouldPolyfill as shouldPolyfillLocale } from '@formatjs/intl-locale/should-polyfill'
import { shouldPolyfill as shouldPolyfillPlural } from '@formatjs/intl-pluralrules/should-polyfill'
import { logger } from '@root-helpers/logger'
import { environment } from '../../environments/environment'
function isOnDevLocale () {
return environment.production === false && window.location.search === '?lang=fr'
}
function getDevLocale () {
return 'fr-FR'
}
async function polyfillICU () {
// Important to be in this order, Plural needs Locale (https://formatjs.io/docs/polyfills/intl-pluralrules)
await polyfillICULocale()
await polyfillICUPlural()
}
async function polyfillICULocale () {
// This locale is supported
if (shouldPolyfillLocale()) {
// TODO: remove, it's only needed to support Plural polyfill and so iOS 12
console.log('Loading Intl Locale polyfill for ' + $localize.locale)
await import('@formatjs/intl-locale/polyfill')
}
}
async function polyfillICUPlural () {
const unsupportedLocale = shouldPolyfillPlural($localize.locale)
// This locale is supported
if (!unsupportedLocale) {
return
}
// TODO: remove, it's only needed to support iOS 12
console.log('Loading Intl Plural rules polyfill for ' + $localize.locale)
// Load the polyfill 1st BEFORE loading data
await import('@formatjs/intl-pluralrules/polyfill-force')
// Degraded mode, so only load the en local data
await import(`@formatjs/intl-pluralrules/locale-data/en.js`)
}
// ---------------------------------------------------------------------------
const icuCache = new Map<string, IntlMessageFormat>()
const icuWarnings = new Set<string>()
const fallback = 'String translation error'
function formatICU (icu: string, context: { [id: string]: number | string }) {
try {
let msg = icuCache.get(icu)
if (!msg) {
msg = new IntlMessageFormat(icu, $localize.locale)
icuCache.set(icu, msg)
}
return msg.format(context) as string
} catch (err) {
if (!icuWarnings.has(icu)) {
logger.warn(`Cannot format ICU ${icu}.`, err)
}
icuWarnings.add(icu)
return fallback
}
}
export {
getDevLocale,
polyfillICU,
formatICU,
isOnDevLocale
}
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