import { AsyncIterableX } from '../asynciterablex';
import { PartialAsyncObserver } from '../../observer';
import { MonoTypeOperatorAsyncFunction } from '../../interfaces';
export declare class TapAsyncIterable<TSource> extends AsyncIterableX<TSource> {
    private _source;
    private _observer;
    constructor(source: AsyncIterable<TSource>, observer: PartialAsyncObserver<TSource>);
    [Symbol.asyncIterator](): AsyncGenerator<any, void, unknown>;
}
export declare function tap<TSource>(observer: PartialAsyncObserver<TSource>): MonoTypeOperatorAsyncFunction<TSource>;
export declare function tap<TSource>(next?: ((value: TSource) => any) | null, error?: ((err: any) => any) | null, complete?: (() => any) | null): MonoTypeOperatorAsyncFunction<TSource>;