use-cd

'use client'import { useRef, useSyncExternalStore } from 'react';const useCD = (interval?: number, onCD?: (cd: number) => void) => {  const timestamp = useRef<number>(Date.now());  return useSyncExternalStore(    (callback) => {      const intervalId = setInterval(() => {        timestamp.current = Date.now();        onCD?.(timestamp.current);        callback();      }, interval || 1000);      return () => clearInterval(intervalId);    },    () => timestamp.current,    () => timestamp.current,  );};export default useCD;

'use client'import useCD from "."export default function (){    const value = useCD()    return <div>timestamp: {value}</div>}