import { HttpHeadersInterface, RequestMethod } from '../contract';
/**
 * Client error is triggered when request could not be executed at all (e.g, network error).
 */
export declare class ClientError extends Error {
    /**
     * Get requested URL.
     */
    readonly url: string;
    /**
     * Get requested method.
     */
    readonly method: RequestMethod;
    /**
     * Get request headers.
     */
    readonly headers: HttpHeadersInterface;
    constructor(url: string, method: RequestMethod, headers: HttpHeadersInterface, message: string);
}