import { useEffect, useRef } from "react"; let useClickOutside = (handler) => { let domNode = useRef(); useEffect(() => { let maybeHandler = (event) => { if (!domNode.current.contains(event.target)) { handler(); } }; document.addEventListener("mousedown", maybeHandler); return () => { document.removeEventListener("mousedown", maybeHandler); }; }); return domNode; }; export default useClickOutside;