import { Router } from '@angular/router';
import { BehaviorSubject } from 'rxjs';
import { NavItem } from '../interfaces/nav-item';
export declare class NavService {
    private router;
    navItems: any;
    appDrawer: any;
    currentUrl: BehaviorSubject<string>;
    constructor(router: Router);
    setNavItems(navItems: NavItem[]): void;
    getNavItems(): any;
    private searchFilter;
    getparentNavItem(parentscreenCode: string): NavItem | undefined;
    getChildNavItems(parentscreenCode: string): NavItem[];
    closeNav(): void;
    openNav(): void;
}