import * as fetch from 'node-fetch';
import * as request from 'request';
import { RequestCallback, Options as RequestOptions } from 'request';
import { Tracer } from './Tracer';
export declare type RequesterModule = 'request' | 'fetch';
export interface FetchRequesterOptions extends fetch.Request {
    remoteServiceName?: string;
}
export declare type FetchRequester = (url: string, fetchOptions: FetchRequesterOptions) => Promise<fetch.Response>;
export interface CreateFetchOptions {
    tracer: Tracer;
}
export declare function createFetch({ tracer }: CreateFetchOptions): FetchRequester;
export declare type RequestRequester = (remoteServiceName: string, url: string, requestOptionsOrCallback: RequestOptions | RequestCallback, callback: RequestCallback) => request.Request;
export interface CreateRequestOptions {
    tracer: Tracer;
}
export declare function createRequest({ tracer }: CreateRequestOptions): RequestRequester;