import { type MutableRefObject } from 'react';
/**
 * @internal
 * Provides the focus behavior for overlays located at the end of the DOM when navigating via keyboard.
 * By using the Ctrl/Cmd + F6 shortcut Focus is moved to the referenced close button.
 * If the overlay is closed via the keyboard, focus will be handled accordingly.
 * In case a container was passed and it contains focusable elements, focus will be moved to the first focusable element within that (necessary for the ToastContainer).
 * Otherwise, the focus will be moved back to the previously focused element when focused via the shortcut, or the last element in the document.
 *
 * @param closeButtonRef - the respective close button of the targeted overlay
 * @param containerRef - the container around the close button where the focus should remain if possible
 * @returns function for handling the focus and the state update function for storing whether the overlay was closed on keydown
 */
export declare function useKeyboardFocusHandling(closeButtonRef: MutableRefObject<HTMLButtonElement | null>, containerRef?: MutableRefObject<HTMLDivElement | null>): [() => void, MutableRefObject<boolean>];