/**
 * Auto-close behavior shared between `Menu` and `Menu.Sub`:
 *
 * - Closes on window blur, working around a Radix bug where submenus stay
 *   open when the browser window loses focus
 *   (https://github.com/radix-ui/primitives/issues/1441).
 * - Closes when any `useOverlay`-managed overlay (Modal, Sheet, Drawer, ...)
 *   is pushed onto the stack while the menu is open, so the user only has
 *   to dismiss the topmost layer.
 *
 * Menus themselves don't register with `visibleOverlays` (Radix has its own
 * dismiss layer); the hook just observes stack growth above the size
 * captured at open-time.
 * @internal
 */
export declare function useMenuAutoClose(open: boolean | undefined, setOpen: (open: boolean) => void): void;