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import { createIntl, createIntlCache, IntlShape } from '@formatjs/intl';
import { readFile } from 'fs/promises';
import path from 'path';
import { settings } from '../config';
export type Messages = { [key: string]: string };
export const defaultLocale = settings.locales.defaultLocale;
/**
* Load the translation for the provided locale.
*
* @param currentLocale - The current locale.
* @returns {Promise<Messages>} The translated strings.
*/
export async function loadTranslation(
currentLocale: string | undefined
): Promise<Messages> {
const locale: string = currentLocale || defaultLocale;
const languagePath = path.join(process.cwd(), `lang/${locale}.json`);
try {
const contents = await readFile(languagePath, 'utf8');
return JSON.parse(contents);
} catch (error) {
console.error(
'Error: Could not load compiled language files. Please run `yarn run i18n:compile` first."'
);
throw error;
}
}
/**
* Create an Intl object to be used outside components.
*
* @returns {<Promise<IntlShape<string>>} The Intl object.
*/
export async function getIntlInstance(): Promise<IntlShape<string>> {
try {
const cache = createIntlCache();
const messages = await loadTranslation(defaultLocale);
return createIntl({ locale: defaultLocale, messages }, cache);
} catch (error) {
console.error('Error: Could not create an Intl instance.');
throw error;
}
}
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