import type { IStream, ITime } from '../types.js';
/**
 * Limit the rate of events to at most one per period milliseconds
 *
 * stream:        -1-2-3-4-5-6-7-8->
 * throttle(2):   -1---3---5---7--->
 */
export declare const throttle: IThrottleCurry;
export interface IThrottleCurry {
    <T>(interval: ITime, source: IStream<T>): IStream<T>;
    <T>(interval: ITime): (source: IStream<T>) => IStream<T>;
}