import { Observable } from 'rxjs';
export declare class Http {
    /** ================== GET REQUESTS ========================== */
    /**
     * Constructs a `GET` request that interprets the body as a JSON object and
     * returns the response body as a JSON object.
     *
     * @param url     The endpoint URL.
     * @param options The HTTP options to send with the request.
     *
     *
     * @return An `Observable` of the response body as a JSON object.
     */
    get(url: string, options?: {
        headers?: any | {
            [header: string]: string | string[];
        };
        observe?: 'body';
        params?: {
            [param: string]: string | string[];
        };
        reportProgress?: boolean;
        responseType?: 'json';
        withCredentials?: boolean;
    }): Observable<object>;
    /** ================== POST REQUESTS ========================== */
    /**
     * Constructs a `POST` request that interprets the body as a
     * JSON object and returns the response body as a JSON object.
     *
     * @param url The endpoint URL.
     * @param body The content to replace with.
     * @param options HTTP options
     *
     * @return An `Observable` of the response, with the response body as a JSON object.
     */
    post(url: string, body: any | null, options?: {
        headers?: any | {
            [header: string]: string | string[];
        };
        observe?: 'body';
        params?: {
            [param: string]: string | string[];
        };
        reportProgress?: boolean;
        responseType?: 'json';
        withCredentials?: boolean;
    }): Observable<object>;
    /** ================== PUT REQUESTS ========================== */
    /**
     * Constructs a `POST` request that interprets the body as a
     * JSON object and returns the response body as a JSON object.
     *
     * @param url The endpoint URL.
     * @param body The content to replace with.
     * @param options HTTP options
     *
     * @return An `Observable` of the response, with the response body as a JSON object.
     */
    put(url: string, body: any | null, options?: {
        headers?: any | {
            [header: string]: string | string[];
        };
        observe?: 'body';
        params?: {
            [param: string]: string | string[];
        };
        reportProgress?: boolean;
        responseType?: 'json';
        withCredentials?: boolean;
    }): Observable<object>;
    /** ================== Method for all type of Requests ================== */
    request(method: string, url: any, options?: any): Observable<object>;
}