/// <reference types="node" />
import { EventEmitter } from 'events';
import { ThreadRequest } from '..';
export declare class RequestQueue extends EventEmitter {
    private threadRequests;
    constructor();
    size(): number;
    push(request: ThreadRequest): void;
    hasPending(): boolean;
    next(): ThreadRequest | undefined;
    rejectAll(err: any): void;
}