import { HttpResponse } from '../models/http-response';
/**
 * Utility to make strongly typed HTTP requests.
 * Uses the Fetch API.
 */
export declare class HttpUtil {
    /**
     * Utility function to make a fully typed
     * http request with the fetch API.
     *
     * @example
     * const response = await HttpUtil.request<Todo[]>(
     *  "https://jsonplaceholder.typicode.com/todos"
     * );
     *
     * @param req This Fetch API interface represents a resource request.
     * @returns a typed async http reponse
     */
    static request<T>(req: RequestInfo): Promise<HttpResponse<T>>;
    /**
     * Make a strongly typed http GET request.
     *
     * @example
     * const response = await HttpUtil.get<{ id: number }>(
     *   "https://jsonplaceholder.typicode.com/posts"
     * );
     *
     * @param path url for the request
     * @param args fetch API args, defaults to `{ method: 'get' }`
     * @returns a typed async http reponse
     */
    static get<T>(path: string, args?: RequestInit): Promise<HttpResponse<T>>;
    /**
     * Make a strongly typed http POST request.
     *
     * @example
     * const response = await HttpUtil.post<{ id: number }>(
     *   "https://jsonplaceholder.typicode.com/posts",
     *   { title: "my post", body: "some content" }
     * );
     *
     * @param path url for the request
     * @param body request's body
     * @param args fetch API args, defaults to `{ method: 'post', body: JSON.stringify(body) }`
     * @returns a typed async http reponse
     */
    static post<T>(path: string, body: any, args?: RequestInit): Promise<HttpResponse<T>>;
    /**
     * Make a strongly typed http PUT request.
     *
     * @example
     * const response = await HttpUtil.put<{ id: number }>(
     *   "https://jsonplaceholder.typicode.com/posts",
     *   { title: "my post", body: "some content" }
     * );
     *
     * @param path url for the request
     * @param body request's body
     * @param args fetch API args, defaults to `{ method: 'put', body: JSON.stringify(body) }`
     * @returns a typed async http reponse
     */
    static put<T>(path: string, body: any, args?: RequestInit): Promise<HttpResponse<T>>;
}