import { useRef, useEffect, useLayoutEffect } from '@wordpress/element'; export const useIsMounted = () => { const isMounted = useRef(false); useEffect(() => { isMounted.current = true; return () => (isMounted.current = false); }); return isMounted; }; export const useIsMountedLayout = () => { const isMounted = useRef(false); useLayoutEffect(() => { isMounted.current = true; return () => (isMounted.current = false); }); return isMounted; };