import { Application } from 'phosphide/lib/core/application';
import { MenuItem } from 'phosphor-menus';
/**
 * The main menu class.  It is intended to be used as a singleton.
 */
export declare class MainMenu {
    /**
     * Add a new menu item to the main menu.
     */
    addItem(item: MenuItem, options?: MainMenu.IAddMenuOptions): void;
    private _items;
}
/**
 * A namespace for MainMenu statics.
 */
export declare namespace MainMenu {
    /**
     * The options used to add a menu to the main menu.
     */
    interface IAddMenuOptions {
        /**
         * The rank order of the menu among its siblings.
         */
        rank?: number;
    }
}
/**
 * The main menu extension.
 *
 * #### Notes
 * The main menu extension adds a menu bar to the top area
 * of the application shell.
 *
 */
export declare const mainMenuExtension: {
    id: string;
    activate: (app: Application) => void;
};
/**
 * A service providing an interface to the main menu.
 */
export declare const mainMenuProvider: {
    id: string;
    provides: typeof MainMenu;
    resolve: () => MainMenu;
};