preprocessData-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.
 *
 * @flow
 */

'use strict';

import semver from 'semver';

import {getLegacyRenderImplementation, normalizeCodeLocInfo} from './utils';
import {ReactVersion} from '../../../../ReactVersions';

const ReactVersionTestingAgainst = process.env.REACT_VERSION || ReactVersion;

let React = require('react');
let ReactDOM;
let ReactDOMClient;
let Scheduler;
let utils;
let assertLog;
let waitFor;

describe('Timeline profiler', () => {
  describe('User Timing API', () => {
    let currentlyNotClearedMarks;
    let registeredMarks;
    let featureDetectionMarkName = null;
    let setPerformanceMock;

    function createUserTimingPolyfill() {
      featureDetectionMarkName = null;

      currentlyNotClearedMarks = [];
      registeredMarks = [];

      // Remove file-system specific bits or version-specific bits of information from the module range marks.
      function filterMarkData(markName) {
        if (markName.startsWith('--react-internal-module-start')) {
          return '--react-internal-module-start-  at filtered (<anonymous>:0:0)';
        } else if (markName.startsWith('--react-internal-module-stop')) {
          return '--react-internal-module-stop-  at filtered (<anonymous>:1:1)';
        } else if (markName.startsWith('--react-version')) {
          return '--react-version-<filtered-version>';
        } else {
          return markName;
        }
      }

      // This is not a true polyfill, but it gives us enough to capture marks.
      // Reference: https://developer.mozilla.org/en-US/docs/Web/API/User_Timing_API
      return {
        clearMarks(markName) {
          markName = filterMarkData(markName);

          currentlyNotClearedMarks = currentlyNotClearedMarks.filter(
            mark => mark !== markName,
// ... (2398 more lines)