React 16 introduces the `React.createRef()` API. Callback refs still work, but to be future-minded we should update to the new API. https://reactjs.org/docs/refs-and-the-dom.html This only applies to the `setupAppForTesting` helper.
React 16 introduces the
React.createRef()API. Callback refs still work, but to be future-minded we should update to the new API.https://reactjs.org/docs/refs-and-the-dom.html
This only applies to the
setupAppForTestinghelper.