To use setState callback on React hooks, we can use the useEffect hook.

For instance, we write

function Comp() {
  const [counter, setCounter] = useState(0);

  const doSomething = () => {
    setCounter(123);
  };

  useEffect(() => {
    console.log("Do something after counter has changed", counter);
  }, [counter]);

  //..
}

to create the counter state with useState.

Then we watch the counter state for changes with the useEffect hook called with [counter] as the 2nd argument.

The useEffect callback will run whenever counter changes.