title: react-dom 17.0.0 update error TypeError: init is not a function
body: <p>Updating react-dom from 16.3 to 17.0.0 in my CRA, getting the following error once I upgrade react-dom. Have had no previous issues updating react-dom until now.</p>
  <p>Anyone know what could be causing the error or have possibly encountered an error like this previously?</p>
  <p>I will check the react-dom repo in the meantime.</p>