import { Observable } from 'rxjs';
import { ActivatedRouteSnapshot, CanDeactivate, RouterStateSnapshot } from '@angular/router';
export interface ComponentDeactivate {
    canDeactivate: (currentRoute?: ActivatedRouteSnapshot, currentState?: RouterStateSnapshot, nextState?: RouterStateSnapshot) => Observable<boolean> | Promise<boolean> | boolean;
}
export declare class ComponentDeactivateGuard implements CanDeactivate<ComponentDeactivate> {
    canDeactivate(component: ComponentDeactivate, currentRoute: ActivatedRouteSnapshot, currentState: RouterStateSnapshot, nextState?: RouterStateSnapshot): Observable<boolean> | Promise<boolean> | boolean;
}