import { Observable, SchedulerLike } from 'rxjs';
import { ISourceCache } from '../ISourceCache';
import { MonoTypeChangeSetOperatorFunction } from '../ChangeSetOperatorFunction';
/**
 * Automatically removes items from the cache after the time specified by
 * the time selector elapses.

 * @typeparam TObject The type of the object.
 * @typeparam TKey The type of the key.
 * @param cache The cache
 * @param timeSelector The time selector.  Return null if the item should never be removed
 * @param interval The polling interval.  Since multiple timer subscriptions can be expensive, it may be worth setting the interval.
 * @param scheduler The scheduler.
 */
export declare function expireAfter<TObject, TKey>(cache: ISourceCache<TObject, TKey>, timeSelector: (value: TObject) => number | undefined, interval?: number, scheduler?: SchedulerLike): Observable<Iterable<[TKey, TObject]>>;
/**
 * Automatically removes items from the cache after the time specified by
 * the time selector elapses.

 * @typeparam TObject The type of the object.
 * @typeparam TKey The type of the key.
 * @param timeSelector The time selector.  Return null if the item should never be removed
 * @param scheduler The scheduler.
 */
export declare function expireAfter<TObject, TKey>(timeSelector: (value: TObject) => number | undefined, scheduler?: SchedulerLike): MonoTypeChangeSetOperatorFunction<TObject, TKey>;
/**
 * Automatically removes items from the cache after the time specified by
 * the time selector elapses.

 * @typeparam TObject The type of the object.
 * @typeparam TKey The type of the key.
 * @param cache The cache
 * @param timeSelector The time selector.  Return null if the item should never be removed
 * @param scheduler The scheduler.
 */
export declare function expireAfter<TObject, TKey>(cache: ISourceCache<TObject, TKey>, timeSelector: (value: TObject) => number | undefined, scheduler?: SchedulerLike): Observable<Iterable<[TKey, TObject]>>;
/**
 * Automatically removes items from the cache after the time specified by
 * the time selector elapses.

 * @typeparam TObject The type of the object.
 * @typeparam TKey The type of the key.
 * @param timeSelector The time selector.  Return null if the item should never be removed
 * @param interval The polling interval.  Since multiple timer subscriptions can be expensive, it may be worth setting the interval.
 * @param scheduler The scheduler.
 */
export declare function expireAfter<TObject, TKey>(timeSelector: (value: TObject) => number | undefined, interval?: number, scheduler?: SchedulerLike): MonoTypeChangeSetOperatorFunction<TObject, TKey>;