import { AsyncFunc, RateLimitUpdateFunc } from './function-types';
export interface Process {
    job: AsyncFunc;
    updater: RateLimitUpdateFunc;
    resolve: Function;
}
export default class AsyncPool {
    private _inFlight;
    private _queue;
    private _rateLimit;
    private _runOne;
    private readonly _drainSize;
    drain(): void;
    append(p: Process): void;
    readonly length: number;
}