import { Observable } from 'rxjs';
import { HttpAdapterInterface, HttpClientInterface, HttpHeadersInterface, HttpInterceptor, HttpRequestInterface, HttpRequestOptionsInterface, HttpResponseInterface } from './contract';
export declare class HttpClient implements HttpClientInterface {
    private readonly _adapter;
    private readonly _interceptors;
    constructor(adapter: HttpAdapterInterface, interceptors?: HttpInterceptor[]);
    /**
     * {@inheritdoc}
     */
    head<T>(url: string, data: unknown | null | undefined, headers?: HttpHeadersInterface | null | undefined, options?: HttpRequestOptionsInterface | null | undefined): Observable<HttpResponseInterface<T>>;
    /**
     * {@inheritdoc}
     */
    get<T>(url: string, headers?: HttpHeadersInterface | null | undefined, options?: HttpRequestOptionsInterface | null | undefined): Observable<HttpResponseInterface<T>>;
    /**
     * {@inheritdoc}
     */
    post<T>(url: string, data: unknown | null | undefined, headers?: HttpHeadersInterface | null | undefined, options?: HttpRequestOptionsInterface | null | undefined): Observable<HttpResponseInterface<T>>;
    /**
     * {@inheritdoc}
     */
    patch<T>(url: string, data: unknown | null | undefined, headers?: HttpHeadersInterface | null | undefined, options?: HttpRequestOptionsInterface | null | undefined): Observable<HttpResponseInterface<T>>;
    /**
     * {@inheritdoc}
     */
    put<T>(url: string, data: unknown | null | undefined, headers?: HttpHeadersInterface | null | undefined, options?: HttpRequestOptionsInterface | null | undefined): Observable<HttpResponseInterface<T>>;
    /**
     * {@inheritdoc}
     */
    delete<T>(url: string, headers?: HttpHeadersInterface | null | undefined, options?: HttpRequestOptionsInterface | null | undefined): Observable<HttpResponseInterface<T>>;
    /**
     * {@inheritdoc}
     */
    request<T>(request: HttpRequestInterface, options?: HttpRequestOptionsInterface | null | undefined): Observable<HttpResponseInterface<T>>;
}