@outcastby/react-scripts/config/jest/babelTransform.js

Configuration and scripts for Create React App.

// @remove-file-on-eject
/**
 * Copyright (c) 2014-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */
'use strict';

const babelJest = require('babel-jest');

module.exports = babelJest.createTransformer({
  presets: [require.resolve('babel-preset-react-app')],
  babelrc: false,
  configFile: false,
  plugins: [[require.resolve('@babel/plugin-proposal-optional-chaining')]],
});