import { Codec, Transport, Options } from '../types/interfaces';
/**
 * Provides an interface to make requests to services.
 */
export default class Client {
    protected options: Options;
    protected codec: Codec;
    protected transport: Transport;
    /**
     * Create new client.
     */
    constructor(options?: Options);
    /**
     * Publish to a topic.
     * @param {any} topic
     * @param {Object} message
     */
    emit(topic: string, message: any): void;
    /**
     * Call service method.
     * @param {Object} request
     * @param {Object} [params]
     * @param {Function} callback
     */
    call(request: any, params?: any, callback?: Function): any;
    getCallTimeout(path: string, params: any): any;
    /**
     * Close underlying transport connection.
     */
    close(): void;
    /**
     * Connection closed handler
     * @param {Function} callback
     */
    onClose(callback: any): void;
}