import * as dtFetch from 'http';
import type { Readable } from 'stream';
import { URL } from 'url';
/**
 * Request options used for the outgoing dt-fetch call
 */
export declare class RequestOptions {
    headers?: dtFetch.OutgoingHttpHeaders;
    method?: 'GET' | 'POST' | 'PUT' | 'DELETE';
    timeout?: number;
    body?: Buffer;
    bodyStream?: Readable;
    redirect?: 'error' | 'follow' | 'manual';
    follow?: number;
    counter?: number;
    referrer?: string;
    referrerPolicy?: string;
}
/**
 * Response object returned by a dt-fetch call.
 */
export declare class Response {
    statusCode?: number;
    statusMessage?: string;
    headers?: dtFetch.IncomingHttpHeaders;
    url?: string;
    private body?;
    /**
     *
     * @returns the body as a JSON object
     */
    json(): Promise<any>;
    /**
     * @returns the body buffer
     */
    blob(): Promise<Buffer | undefined>;
    /**
     * Returns true if the http request was successful
     */
    get ok(): boolean;
    /**
     * Returns true if the response is html
     */
    get isHtmlResponse(): boolean | undefined;
}
/**
 * Basic implementation of the "fetch" API.
 * Executes a http | https request and returns a Response
 * object containing status code, status message and response body.
 *
 * @param url the URL object or plain url string
 * @param requestOptions the request options
 */
export declare function fetch(url: string | URL, requestOptions?: RequestOptions): Promise<Response>;