This list is pretty awesome:

<img width="390" alt="Screenshot 2020-04-03 at 00 12 08" src="https://user-images.githubusercontent.com/810438/78308234-e0047780-753f-11ea-9d4f-1e2d31e5baa0.png">

But always struggle to guess which component in the owner list I need to jump to.

We should make hovering the owner list highlight components, just like the main tree view does.

@hristo-kanchev, interested?
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    ownerWindow.addEventListener('resize', handleResize);
    return () => ownerWindow.removeEventListener('resize', handleResize);
  }, [containerRef, totalChildWidth]);
  return isOverflowing;
}
export function useLocalStorage<T>(
  key: string,
  initialValue: T | (() => T),
): [T, (value: T | (() => T)) => void] {
  const getValueFromLocalStorage = useCallback(() => {
    try {
      const item = localStorageGetItem(key);
      if (item != null) {
        return JSON.parse(item);
      }
    } catch (error) {
      console.log(error);
    }
    if (typeof initialValue === 'function') {
      return ((initialValue: any): () => T)();
    } else {
      return initialValue;
    }
  }, [initialValue, key]);
  const [storedValue, setStoredValue] = useState<any>(getValueFromLocalStorage);
  const setValue = useCallback(