import { ActivatedRouteSnapshot, CanDeactivate, RouterStateSnapshot } from '@angular/router';
import { Observable } from 'rxjs';
export interface CanComponentDeactivate {
    canDeactivate: () => Observable<boolean> | Promise<boolean> | boolean;
}
export declare class CanDeactivatePageGuard implements CanDeactivate<CanComponentDeactivate> {
    canDeactivate(component: CanComponentDeactivate, route: ActivatedRouteSnapshot, state: RouterStateSnapshot): any;
}
export declare class CanDeactivateNgPageGuard implements CanDeactivate<CanComponentDeactivate> {
    canDeactivate(component: CanComponentDeactivate, route: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean | Promise<boolean> | Observable<boolean>;
}