export interface TopNavContextValue {
    /**
     * Closes the open desktop submenu (mega-menu) panel. Called by `TopNav.SubItem`
     * when a submenu link is activated so the panel dismisses on navigation
     * (important for SPA / client-side routing where the nav stays mounted).
     * No-op when there is no open panel.
     */
    closeSubmenu: () => void;
}
export declare const TopNavContext: import('react').Context<TopNavContextValue | null>;
export declare const useTopNavContext: () => TopNavContextValue | null;