App-first attempt.js

function App() {
  const [count, setCount] = useState(0);
  const [message, setMessage] = useState("");

  function increment() {
    setCount(count + 1);
  }

  function decrement() {
    setCount(count - 1);
  }

  useEffect(() => setMessage(`count is ${count}`), [count, message]);

  return (
,,,
  );
}