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