parts useStickyOrNot.tsx

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  import { useRef, useState } from 'react';
 
export const useStickyOrNot = (top: number) => {
  const ref = useRef<HTMLDivElement>(null);
  const [isSticky, setIsSticky] = useState(false);
 
  const checkHeight = () => {
    if (ref.current) {
      setIsSticky(ref.current.scrollHeight < window.innerHeight - top);
    }
  };
 
  return {
    ref,
    isSticky,
    checkHeight
  };
};