import { UseTranslationOptions } from 'react-i18next'; interface useTranslationReturn { t(str: string): string; ready: boolean; } interface i18nReactMock { useTranslation(string, options?: UseTranslationOptions): useTranslationReturn; } export const i18nReact: i18nReactMock = { useTranslation: () => { return { t: str => str, ready: true }; } };