content: /**
   * Copyright (c) Facebook, Inc. and its affiliates.
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
   *
   * @flow
   */
  
  import React from 'react';
  import invariant from 'shared/invariant';
  
  invariant(
    React,
    'ReactDOM was loaded before React. Make sure you load ' +
      'the React package before loading ReactDOM.',
  );
  