import { Response } from 'node-fetch';
import { Transport } from '../Transport/Transport';
import FormData from 'form-data';
import { ClientConfig } from "../interfaces/ClientConfig";
export declare class HttpClient extends Transport<Response> {
    private proxyAgent;
    protected cfg: ClientConfig;
    constructor(cfg?: ClientConfig);
    private init;
    get(url: string): Promise<Response>;
    post(url: string, body: any): Promise<Response>;
    delete(url: string): Promise<Response>;
    put(url: string, body: FormData): Promise<Response>;
    protected handleError(error: unknown, context: string): Error;
    protected hostURL(): string;
}