index.js

import { I18nProvider } from '@lingui/react';
import catalogEl from './locales/el/messages.js';
import catalogEn from './locales/en/messages.js';
const catalogs = { en: catalogEn, el: catalogEl };

ReactDOM.render(
  <I18nProvider
    language={i18nConfig.locale}
    catalogs={catalogs}
  >
    <Home name={'React.js'}/>
  </IntlProvider>, document.getElementById('root'));