import { CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot, Router } from '@angular/router';
import { Observable } from 'rxjs';
import { AuthService, SurveyService } from '../../../services';
export declare class AbstractGuard implements CanActivate {
    protected auth: AuthService;
    protected survey: SurveyService;
    protected router: Router;
    constructor(auth: AuthService, survey: SurveyService, router: Router);
    canActivate(next: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean>;
    checkAgainstScope(idTokenResult: firebase.auth.IdTokenResult, survey_id: string): boolean;
    private loginWithSurveyAccessToken;
    private removeURLParameter;
}