import { type RefObject } from "react";
/**
 * Hook that alerts clicks or touches outside of the passed ref.
 *
 * @example
 * const ref = useRef<HTMLDivElement>(null);
 * useOnClickOutside(ref, () => setIsOpen(false));
 *
 * @param ref The React RefObject of the element to detect outside clicks for.
 * @param handler Callback invoked when a click/touch outside occurs.
 */
export declare function useOnClickOutside<T extends HTMLElement = HTMLElement>(ref: RefObject<T | null>, handler: (event: MouseEvent | TouchEvent) => void): void;