export declare function useFocus<T extends HTMLElement>(): {
    ref: {
        current: T;
    };
    restore: () => any;
    setPreviouslyFocused: () => Element | null;
};
export declare function useImperativeFocus(): {
    initiallyFocused: Element | null;
    lastFocus: Element | null;
    update: () => void;
    restoreOnUnmount: ({ to }?: {
        to?: "initial" | "custom" | undefined;
    }) => void;
};