import type { Server as ProxyServer } from 'proxy-chain';
export interface ConnectionLogEntry {
    /** Connection Id */
    id: number;
    /** Proxy name */
    proxy: string;
    /** Host */
    host: string;
}
export interface ConnectionStats {
    srcTxBytes: number;
    srcRxBytes: number;
    trgTxBytes: number;
    trgRxBytes: number;
}
export declare class ProxyRouterStats {
    private proxyServer;
    /** Log of all connections (id, proxyName, host) */
    connectionLog: ConnectionLogEntry[];
    protected connectionStats: Map<number, ConnectionStats>;
    constructor(proxyServer: ProxyServer);
    /** Get bytes transferred by proxy */
    get byProxy(): any;
    /** Get bytes transferred by host */
    get byHost(): any;
    protected getStatsFromActiveConnections(): void;
    protected calculateProxyBytes(stats?: Partial<ConnectionStats>): number;
}