export interface UseFocusWithinOptions {
    onFocus?: (event: FocusEvent) => void;
    onBlur?: (event: FocusEvent) => void;
}
/**
 * Tracks whether focus is within a referenced DOM element. Returns a ref to
 * attach to the target element and a `focused` boolean that is `true` whenever
 * the element or any of its descendants has focus.
 *
 * Adapted from Mantine's `useFocusWithin` hook.
 *
 * @param options - Optional `onFocus` and `onBlur` callbacks fired when focus
 * enters or leaves the element.
 * @returns An object with a `ref` to attach to the target element and a
 * `focused` boolean indicating current focus-within state.
 */
export declare function useFocusWithin<T extends HTMLElement = any>({ onBlur, onFocus, }?: UseFocusWithinOptions): {
    ref: React.RefObject<T>;
    focused: boolean;
};