}
     If the root is not a host container, we're in a disconnected tree. I.e.
     unmounted.
    if (a.tag !== HostRoot) {
      throw Error('Unable to find node on an unmounted component.');
    }
    if (a.stateNode.current === a) {
       We'
      return fiber;
    }
     Otherwise B has to be current branch.
    return alternate;
  }
   END copied code
  function prepareViewAttributeSource(
    id: number,
    path: Array<string | number>,
  ): void {
    const isCurrent = isMostRecentlyInspectedElementCurrent(id);
    if (isCurrent) {
      window.$attribute = getInObject(
        ((mostRecentlyInspectedElement: any): InspectedElement),
        path,
      );
    }
  }
  function prepareViewElementSource(id: number): void {
    const fiber = idToFiberMap.get(id);
    if (fiber == null) {
      console.warn(`Could not find Fiber with id "${id}"`);