/// <reference types="node" />
import { URL } from 'url';
import { FetchInjection } from './fetch_injection';
import { FetchOptions } from './fetch_options';
import { FetchResponse, ParsedJson } from './fetch_response';
/**
 * Fetches an external resources
 *
 * @param {{ res: ResponseLike }} for locals access
 * @param {URL} url to fetch from
 * @param {FetchOptions} options of options to pipe to #createOptions
 *
 * @returns {Promise<FetchResponse>} the promise for this fetch
 */
export declare function fetchExternal<Accepted = ParsedJson | null>({ res }: Readonly<FetchInjection>, url: Readonly<URL>, options?: Readonly<FetchOptions>): Promise<FetchResponse<Accepted>>;
export default fetchExternal;