scripts/getBabelOptions.js

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @format
 */

'use strict';

module.exports = function (options) {
  options = Object.assign(
    {
      env: 'production',
      plugins: [],
    },
    options,
  );

  const fbjsPreset = require('babel-preset-fbjs/configure')({
    autoImport: options.autoImport || false,
    objectAssign: false,
    stripDEV: options.env === 'production',
  });

  fbjsPreset.presets.push({
    plugins: [
      [
        require('./rewrite-modules'),
        {
          map: {
            Promise: 'promise-polyfill',
            areEqual: 'fbjs/lib/areEqual',
            warning: 'fbjs/lib/warning',
          },
        },
      ],
    ],
  });

  if (options.postPlugins) {
    fbjsPreset.presets.push({
      plugins: options.postPlugins,
    });
  }

  return {
    plugins: options.plugins.concat('@babel/plugin-transform-spread'),
    presets: [fbjsPreset],
  };
};