ssr-infer-event-handlers-from-startTransition.js — react Source File

Source Code

// @enableOptimizeForSSR
function Component() {
  const [, startTransition] = useTransition();
  const [state, setState] = useState(0);
  const ref = useRef(null);
  const onChange = e => {
    // The known startTransition call allows us to infer this as an event handler
    // and prune it
    startTransition(() => {
      setState.call(null, e.target.value);
    });
  };
  useEffect(() => {
    log(ref.current.value);
  });
  return <CustomInput value={state} onChange={onChange} ref={ref} />;
}