import { Observable } from 'rxjs';
import { Service } from './service';
export declare function createConnectingService<T, S extends Service>(target$: Observable<T | null>, getDisconnectedService: () => S, getConnectedService: (target: T) => S, onServiceChange?: (nextService: S, prevService: S) => void): S;
export declare function createConnectingEffectService<T>(target$: Observable<T | null>, getEffects$: (target: T) => Observable<any>): Service;