babel.config.js

/*
 *   Copyright OpenSearch Contributors
 *
 *   Licensed under the Apache License, Version 2.0 (the "License").
 *   You may not use this file except in compliance with the License.
 *   A copy of the License is located at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   or in the "license" file accompanying this file. This file is distributed
 *   on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 *   express or implied. See the License for the specific language governing
 *   permissions and limitations under the License.
 */

// babelrc doesn't respect NODE_PATH anymore but using require does.
// Alternative to install them locally in node_modules
module.exports = function (api) {
  // ensure env is test so that this config won't impact build or dev server
  if (api.env('test')) {
    return {
      presets: [
        require('@babel/preset-env'),
        require('@babel/preset-react'),
        require('@babel/preset-typescript'),
      ],
      plugins: [
        [require('@babel/plugin-transform-runtime'), { regenerator: true }],
        require('@babel/plugin-proposal-class-properties'),
        require('@babel/plugin-proposal-object-rest-spread'),
      ],
    };
  }
  return {};
};