import { ActivatedRouteSnapshot, CanDeactivate } from '@angular/router';
import { Observable } from 'rxjs';
import { DirtyComponent } from './dirty-component';
export declare abstract class DirtyCheckGuard implements CanDeactivate<DirtyComponent> {
    canDeactivate(component: DirtyComponent, currentRoute: ActivatedRouteSnapshot): Observable<boolean>;
    abstract confirmChanges(currentRoute: ActivatedRouteSnapshot): Observable<boolean> | boolean;
}