import { AsyncIterableX } from './asynciterablex';
export declare class DelayAsyncIterable<TSource> extends AsyncIterableX<TSource> {
    private _source;
    private _dueTime;
    constructor(source: AsyncIterable<TSource>, dueTime: number);
    [Symbol.asyncIterator](): AsyncIterableIterator<TSource>;
}
export declare function delay<TSource>(source: AsyncIterable<TSource>, dueTime: number): AsyncIterableX<TSource>;