See #17798
window: window;
  tipBoundsWindow: window;
  container: HTMLElement;
  tip: OverlayTip;
  rects: Array<OverlayRect>;
  constructor() {
    /
    let currentWindow = window.__REACT_DEVTOOLS_TARGET_WINDOW__ || window;
    this.window = currentWindow;
    /
    let tipBoundsWindow = window.__REACT_DEVTOOLS_TARGET_WINDOW__ || window;
    this.tipBoundsWindow = tipBoundsWindow;
    const doc = currentWindow.document;
    this.container = doc.createElement('div');
    this.container.style.zIndex = '10000000';
    this.tip = new OverlayTip(doc, this.container);
    this.rects = [];
    doc.body.appendChild(this.container);
  }
  remove() {