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import i18n, { BackendModule, ResourceKey } from 'i18next';
import LanguageDetector from 'i18next-browser-languagedetector';
import { initReactI18next } from 'react-i18next';
const backend: BackendModule = {
type: 'backend',
async read(language, namespace, callback) {
function error(message: string): void {
callback(new Error(message), false);
}
function success(result: ResourceKey): void {
callback(null, result);
}
if (namespace !== 'translation') {
error("Namespace must be 'translation'.");
}
if (language === 'en') {
const res = (
await import(
/* webpackChunkName: "locales-en" */ './locales/en/translation'
)
).default;
success(res);
} else if (language === 'zh') {
const res = (
await import(
/* webpackChunkName: "locales-zh" */ './locales/zh/translation'
)
).default;
success(res);
} else {
error(`Language ${language} is not supported.`);
}
},
init() {}, // eslint-disable-line @typescript-eslint/no-empty-function
create() {}, // eslint-disable-line @typescript-eslint/no-empty-function
};
export const i18nPromise = i18n
.use(LanguageDetector)
.use(backend)
.use(initReactI18next) // bind react-i18next to the instance
.init({
fallbackLng: 'en',
lowerCaseLng: true,
debug: process.env.NODE_ENV === 'development',
interpolation: {
escapeValue: false, // not needed for react!!
},
// react i18next special options (optional)
// override if needed - omit if ok with defaults
/*
react: {
bindI18n: 'languageChanged',
bindI18nStore: '',
transEmptyNodeValue: '',
transSupportBasicHtmlNodes: true,
transKeepBasicHtmlNodesFor: ['br', 'strong', 'i'],
useSuspense: true,
}
*/
});
if (module.hot) {
module.hot.accept(
['./locales/en/translation', './locales/zh/translation'],
() => {
void i18n.reloadResources();
}
);
}
export default i18n;
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