/// <reference types="node" />
import bluebird = require("bluebird");
import { EventEmitter } from "events";
export default class Semaphore extends EventEmitter {
    count: number;
    max: number | null;
    timeout: number;
    private _zeroPromiseResolver;
    private _resolvers;
    constructor(options?: {
        max?: number;
        timeout?: number;
    });
    withLock(coroutine: any): any;
    wrap<T>(promise: Promise<T>): Promise<T>;
    increment(): bluebird<void>;
    decrement(): void;
    take(): bluebird<void>;
    release(): void;
    setMax(max: any): void;
    getCount(): number;
    getRequestedCount(): number;
    waitForZero(): any;
}