import { RefObject } from 'react';
/**
 * Traps focus within a specified container element.
 *
 * @param containerRef - Ref object pointing to the container element.
 * @param isActive - Boolean indicating if the focus trap should be active.
 * @param initialFocusRef - Optional ref object pointing to the element that should receive focus initially.
 */
export declare const useFocusTrap: <T extends HTMLElement>(containerRef: RefObject<T | null>, isActive: boolean, initialFocusRef?: RefObject<HTMLElement | null>) => void;