import { Counter, Gauge, Registry } from 'prom-client';
import { TextResponse } from '../util/http-server.js';
export default class MetricsCollector {
    readonly register: Registry;
    constructor();
    readonly version: Gauge<"revision" | "version">;
    readonly total_f_requests: Counter<"type" | "status">;
    readonly total_f_request_duration: Counter<"type" | "status" | "state">;
    incFRequestDuration(dur: number, status: number, type: '1' | '2', state: 'validate' | 'attach' | 'queue' | 'init' | 'process'): void;
    readonly total_devices: Gauge<"platform" | "znca_version" | "znca_build" | "android_release" | "android_platform_version">;
    handleMetricsRequest(): Promise<TextResponse>;
}