Function useIsMounted

app/hooks/useIsMounted.tsx:3–14

()

import { useRef, useEffect, useCallback } from "react";

export function useIsMounted(): () => boolean {
  const ref = useRef(false);

  useEffect(() => {
    ref.current = true;
    return () => {
      ref.current = false;
    };
  }, []);

  return useCallback(() => ref.current, [ref]);
}