Suggestion: load html from file

[Gys]

One thing I dislike about React&Co is the integration of the html into the code. Can it be separated? So I can work on the html visually for layout and design. Ideally loading the contents of the return statement from a html file instead of integrating it into the code:

  export default function Home(props) {
      const [data, setData] = useState(props.data);
      useEffect(() => {
          fetch("http://localhost:8000/handler")
              .then(x => x.json())
              .then(x => setData(x));
      }, [])
      return (
        // insert contents of index.html
      )
  }