import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
export interface CanComponentDeactivate {
    canDeactivate: () => Observable<boolean> | Promise<boolean> | boolean;
}
export declare class CanDeactivateGuard {
    canDeactivate(component: CanComponentDeactivate): Observable<boolean> | Promise<boolean> | boolean;
    private canDeactivateAsync;
    static ɵfac: i0.ɵɵFactoryDeclaration<CanDeactivateGuard, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<CanDeactivateGuard>;
}