import { ConnectionData, SourceHelper } from './SourceHelper';
export declare class SourceXtbHelper extends SourceHelper {
    ws: WebSocket;
    contype: any;
    constructor(pname: string, pcondata: ConnectionData, pleverage?: number, pmaxbuyperiods?: number);
    wsquery(command: string, args?: any): any;
    connect(): Promise<any>;
    updateMarkets(): Promise<{
        [symbol: string]: any;
    }>;
    ping(): void;
}