import { ServerTrafficData, ServerTrafficUpdate } from "./constants";
import Logger from "./logger";
export declare class ServerTrafficMonitor {
    #private;
    protected logger: Logger;
    constructor(logger?: Logger);
    addListener(listener: (traffic: ServerTrafficData) => void): void;
    removeListener(listener: (traffic: ServerTrafficData) => void): void;
    handleUpdate(update: ServerTrafficUpdate | ServerTrafficData): void;
    lastTraffic(): ServerTrafficData | null;
}