/**
 * Creates a TreeWalker for menu items, skipping disabled/hidden items and non-items.
 */
export declare function createMenuWalker(root: HTMLElement): TreeWalker;
/**
 * Returns the next enabled menu item after the current one, or null if none.
 */
export declare function getNextMenuItem(current: HTMLElement): HTMLElement | null;
/**
 * Returns the previous enabled menu item before the current one, or null if none.
 */
export declare function getPreviousMenuItem(current: HTMLElement): HTMLElement | null;
/**
 * Returns the first enabled menu item in the menu.
 */
export declare function getFirstMenuItem(root: HTMLElement): HTMLElement | null;
/**
 * Returns the last enabled menu item in the menu.
 */
export declare function getLastMenuItem(root: HTMLElement): HTMLElement | null;