TimelineProfiler-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 {
  getLegacyRenderImplementation,
  getModernRenderImplementation,
  normalizeCodeLocInfo,
} from './utils';

let React = require('react');
let Scheduler;
let store;
let utils;

// This flag is on experimental which disables timeline profiler.
const enableComponentPerformanceTrack =
  React.version.startsWith('19') && React.version.includes('experimental');

describe('Timeline profiler', () => {
  if (enableComponentPerformanceTrack) {
    test('no tests', () => {});
    // Ignore all tests.
    return;
  }

  beforeEach(() => {
    utils = require('./utils');
    utils.beforeEachProfiling();

    React = require('react');
    Scheduler = require('scheduler');

    store = global.store;
  });

  afterEach(() => {
    jest.restoreAllMocks();
  });

  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.
// ... (2584 more lines)