cra-template-rb/template/src/setupTests.ts

The official React Boilerplate template for Create React App

// react-testing-library renders your components to document.body,
// this adds jest-dom's custom assertions
import '@testing-library/jest-dom/extend-expect';

import 'react-app-polyfill/ie11';
import 'react-app-polyfill/stable';

import 'jest-styled-components';

// Init i18n for the tests needing it
import 'locales/i18n';