import { ActivatedRouteSnapshot, CanDeactivate, RouterStateSnapshot, UrlTree } from '@angular/router';
import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
export interface ICanComponentDeactivate {
    canDeactivate: () => Observable<boolean | UrlTree> | Promise<boolean | UrlTree> | boolean | UrlTree;
}
export declare class CanDeactivateGuard implements CanDeactivate<ICanComponentDeactivate> {
    canDeactivate(component: ICanComponentDeactivate, route: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean | UrlTree | Observable<boolean | UrlTree> | Promise<boolean | UrlTree>;
    static ɵfac: i0.ɵɵFactoryDeclaration<CanDeactivateGuard, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<CanDeactivateGuard>;
}