import { Observable } from 'rxjs/Observable';
import { MenuItem } from '../../models/menu-item';
export declare class MenuService {
    private _activeClass;
    private _activeIcon;
    private _activeItem;
    private _items;
    constructor();
    initialize(items: MenuItem[], activeClass: string, activeIcon: string): void;
    readonly activeClass: string;
    readonly activeItem$: Observable<MenuItem>;
    setActive(item: MenuItem): void;
}