ReactFreshIntegration-test.js — react Source File

Source Code

/**
 * 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.
 *
 * @emails react-core
 */

'use strict';

let React;
let ReactDOMClient;
let ReactFreshRuntime;
let Scheduler;
let act;
let assertLog;

const babel = require('@babel/core');
const freshPlugin = require('react-refresh/babel');
const ts = require('typescript');

describe('ReactFreshIntegration', () => {
  let container;
  let root;
  let exportsObj;

  beforeEach(() => {
    if (__DEV__) {
      jest.resetModules();
      React = require('react');
      ReactFreshRuntime = require('react-refresh/runtime');
      ReactFreshRuntime.injectIntoGlobalHook(global);
      ReactDOMClient = require('react-dom/client');
      Scheduler = require('scheduler/unstable_mock');
      ({act, assertLog} = require('internal-test-utils'));
      container = document.createElement('div');
      document.body.appendChild(container);
      root = ReactDOMClient.createRoot(container);
      exportsObj = undefined;
    }
  });

  afterEach(() => {
    if (__DEV__) {
      root.unmount();
      // Ensure we don't leak memory by holding onto dead roots.
      expect(ReactFreshRuntime._getMountedRootCount()).toBe(0);
      document.body.removeChild(container);
    }
  });

  function executeJavaScript(source, compileDestructuring) {
    const compiled = babel.transform(source, {
      babelrc: false,
      presets: ['@babel/react'],
      plugins: [
        [freshPlugin, {skipEnvCheck: true}],
        '@babel/plugin-transform-modules-commonjs',
        compileDestructuring && '@babel/plugin-transform-destructuring',
// ... (2221 more lines)