setTimeoutの型注釈とReactでの実装例

  Type 'Timeout' is not assignable to type '(prevState: number | undefined) => number | undefined'.
    Type 'Timeout' provides no match for the signature '(prevState: number | undefined): number | undefined'.

const timerId = useRef<ReturnType<typeof setTimeout>>();

if (timerId.current) {
  clearTimeout(timerId.current);
}

timerId.current = setTimeout(() => search(query), 1000);