import { ActivatedRouteSnapshot, Router } from '@angular/router';
import { Observable } from 'rxjs';
import { AuthService } from '../auth/auth.service';
import * as i0 from "@angular/core";
/**
 * This guard prevents unauthorized users from accessing any routes which require
 * authorization.
 */
export declare class AuthGuard {
    private router;
    private authService;
    private readonly externalLoginUrl;
    constructor(router: Router, authService: AuthService);
    canActivate(route: ActivatedRouteSnapshot): Observable<boolean>;
    static ɵfac: i0.ɵɵFactoryDeclaration<AuthGuard, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<AuthGuard>;
}