I'm calling dispose() and setting it to null afterwards, in the useEffect's clean up callback function. Is this a good practice doing both calling dispose() there explicitly and null-it to both: prevent further usage and tell the JS' GC to collect it.

useEffect(() => {


    let markersDispo: monaco.IDisposable |  null =
      monaco.editor.onDidChangeMarkers(handleMarketsChanges);

    return () => {
      
      markersDispo!.dispose();
      markersDispo = null;

  }, [foo]);