import { HttpContext, HttpRequest, HttpResponse } from '../types';
import { MetricsCollector, MetricsConfig } from './types';
export declare class MetricsMiddleware<Req extends HttpRequest = HttpRequest, Res extends HttpResponse = HttpResponse> {
    private readonly collector;
    constructor(collector: MetricsCollector);
    middleware(): (req: Req, res: Res, next: () => void) => void;
    process(context: HttpContext): void;
    getCollector(): MetricsCollector;
    destroy(): void;
}
export declare function createMetricsMiddleware<Req extends HttpRequest = HttpRequest, Res extends HttpResponse = HttpResponse>(collector: MetricsCollector): MetricsMiddleware<Req, Res>;
export declare const defaultMetricsConfig: MetricsConfig;