import { PriorityQueue } from '../domain/priority-queue/priority-queue';
import { Executor } from "./executor";
export declare class Scheduler {
    private readonly queue;
    private readonly executor;
    private _maxConcurrentRequests;
    private _processingRequests;
    private _maxObservedConcurrentRequests;
    private logger;
    constructor(queue: PriorityQueue, executor: Executor);
    start(): void;
    private schedule;
    private canProcess;
    private processRequest;
    updateMaxConcurrentRequests(max: number): void;
    get maxConcurrentRequests(): number;
    get processingRequests(): number;
    consumeMaxObservedConcurrentRequests(): number;
    terminate(): void;
}