import { IterableX } from '../iterablex';
import { PartialObserver } from '../../observer';
import { MonoTypeOperatorFunction } from '../../interfaces';
export declare class TapIterable<TSource> extends IterableX<TSource> {
    private _source;
    private _observer;
    constructor(source: Iterable<TSource>, observer: PartialObserver<TSource>);
    [Symbol.iterator](): Generator<any, void, unknown>;
}
export declare function tap<TSource>(observer: PartialObserver<TSource>): MonoTypeOperatorFunction<TSource>;