import { type ReactNode } from 'react';
type SubLevelCoordinator = {
    register: (id: symbol, close: () => void) => void;
    unregister: (id: symbol) => void;
    notifyOpened: (id: symbol) => void;
};
export declare function useMenuSubLevelCoordinator(): SubLevelCoordinator | null;
export declare function MenuSubLevelProvider({ children }: {
    children: ReactNode;
}): import("react/jsx-runtime").JSX.Element;
export {};