import IHttpClient from "./IHttpClient";
import * as Rx from "rx";
import "whatwg-fetch";
import HttpResponse from "./HttpResponse";
import Dictionary from "../util/Dictionary";
declare class HttpClient implements IHttpClient {
    get(url: string, headers?: Dictionary<string>): Rx.Observable<HttpResponse>;
    post(url: string, body: {} | FormData, headers?: Dictionary<string>): Rx.Observable<HttpResponse>;
    put(url: string, body: {}, headers?: Dictionary<string>): Rx.Observable<HttpResponse>;
    delete(url: string, headers?: Dictionary<string>): Rx.Observable<HttpResponse>;
    private getJsonBody(body);
    private addJsonHeaders(headers, body);
    private performNetworkCall(url, method, body?, headers?);
    private isBinaryPayload(contentType);
    private isFormData(data);
}
export default HttpClient;