import { MonoTypeOperatorFunction, SchedulerLike } from 'rxjs';
import { NumberGenerator } from '../utils/numberGenerator';
/**
 * Mirrors the source Observable but makes random delays between values.
 *
 * @param min number
 * @param max number
 * @param generator NumberGenerator
 * @param scheduler
 */
export declare const randomDelay: <T>(min: number, max: number, generator?: NumberGenerator, scheduler?: SchedulerLike) => MonoTypeOperatorFunction<T>;