For example:
<img width="1904" alt="Screen Shot 2021-11-05 at 11 59 05 AM" src="https://user-images.githubusercontent.com/29597/140540816-25d6d47b-7aea-4121-aeaa-565accc65b1f.png">

args: {data: {}},
        cat: 'blink.user_timing',
        name: markName,
        ph: 'R',
      });
    });
    return userTimingData;
  }
  beforeEach(() => {
    jest.resetModules();
    polyfillJSDomUserTiming();
    React = require('react');
    ReactDOM = require('react-dom');
    Scheduler = require('scheduler');
    const TestUtils = require('react-dom/test-utils');
    act = TestUtils.act;
    tid = 0;
    pid = 0;
    startTime = 0;
    global.IS_REACT_ACT_ENVIRONMENT = true;
  });
  afterEach(() => {
    
    expect(marks).toHaveLength(0);
    delete global.performance;
  });
  it('should throw given an empty timeline', async () => {
    await expect(async () => preprocessData([])).rejects.toThrow();
  });
  it('should throw given a timeline with no Profile event', async () => {