import { type RefObject } from 'react';
/**
 * Hook to detect clicks outside a referenced element.
 * Uses mousedown for immediate detection.
 *
 * @param ref - Reference to the element to monitor
 * @param handler - Callback when click outside occurs
 * @param enabled - Whether the hook is active (default: true)
 * @param excludeRefs - Additional refs to exclude from outside detection (e.g., portaled elements)
 */
export declare function useClickOutside<T extends HTMLElement>(ref: RefObject<T | null>, handler: (event: MouseEvent) => void, enabled?: boolean, excludeRefs?: RefObject<HTMLElement | null>[]): void;
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