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1 2 3 4 5 6 7 8 9 10 11 12 13 | import { useRef, useEffect } from "react"; export const useIsMounted = () => { const isMountedRef = useRef(true); useEffect(() => { isMountedRef.current = true; return () => { isMountedRef.current = false; }; }, []); return () => isMountedRef.current; }; |