import type { BroadcastServer } from '../server';
export declare interface PrometheusMetrics {
  connections_total: number
  connections_active: number
  channels_total: number
  messages_total: number
  messages_received_total: number
  subscriptions_total: number
  errors_total: number
  uptime_seconds: number
  memory_usage_bytes: number
  cpu_usage_percent: number
  http_requests_total: Record<string, number>
  rate_limit_hits_total: number
  auth_failures_total: number
  webhook_deliveries_total: number
  webhook_failures_total: number
  queue_jobs_waiting: number
  queue_jobs_active: number
  queue_jobs_completed: number
  queue_jobs_failed: number
  queue_jobs_delayed: number
}
export declare class PrometheusExporter {
  constructor(server: BroadcastServer);
  increment(metric: keyof PrometheusMetrics, value?: number): void;
  set(metric: keyof PrometheusMetrics, value: number): void;
  incrementHttpRequest(path: string, status: number): void;
  export(): Promise<string>;
  toJSON(): Promise<PrometheusMetrics>;
}