import { RefObject } from 'react';
import { FocusableElement } from 'tabbable';
/**
 * Options for the useKeyboardFocusables hook
 */
type OptionProps = {
    /**
     * Disable mutation observer
     */
    observeChange: false;
} | {
    /**
     * Enable mutation observer with optional configuration
     */
    observeChange: true;
    /**
     * Observe attribute changes
     */
    attributes?: boolean;
    /**
     * Observe text content changes
     */
    characterData?: boolean;
    /**
     * Observe child element changes
     */
    childList?: boolean;
    /**
     * Observe descendant changes
     */
    subtree?: boolean;
};
/**
 * Custom hook for tracking keyboard focusable elements within a container.
 *
 * Features:
 * - Tracks all keyboard focusable elements within a target container
 * - Supports both ref objects and direct element references
 * - Optional mutation observer for real-time updates
 * - Debounced updates to prevent excessive re-renders
 * - Configurable mutation observer options
 * - Manual update function for immediate refresh
 * - Uses tabbable library for accurate focusable detection
 * - Automatically cleans up mutation observer
 *
 * @param element - Target element or ref to monitor for focusable elements
 * @param options - Configuration options for mutation observer behavior
 * @returns Object containing current focusable elements and update function
 */
export declare const useKeyboardFocusables: (element: RefObject<HTMLElement> | HTMLElement | undefined, options?: OptionProps) => {
    focusables: FocusableElement[] | null;
};
export {};