import { IObservableCache } from '../IObservableCache';
import { Observable } from 'rxjs';
import { IChangeSet } from '../IChangeSet';
import { MonoTypeChangeSetOperatorFunction } from '../ChangeSetOperatorFunction';
/**
 * Defer the subscription until the stream has been inflated with data
 * @typeparam TObject The type of the object.
 * @typeparam TKey The type of the key.
 */
export declare function deferUntilLoaded<TObject, TKey>(source: IObservableCache<TObject, TKey>): Observable<IChangeSet<TObject, TKey>>;
/**
 * Defer the subscription until the stream has been inflated with data
 * @typeparam TObject The type of the object.
 * @typeparam TKey The type of the key.
 */
export declare function deferUntilLoaded<TObject, TKey>(): MonoTypeChangeSetOperatorFunction<TObject, TKey>;