/// <reference types="node" />
import { Agent, ClientRequest, RequestOptions } from "agent-base";
import * as net from "net";
import { ActionHandlerContext } from "../types";
/**
 * Experimental: can be used basically for GET or POST (with JSON payload)
 * More complex requests can cause issues
 */
export declare class FetchAgent extends Agent {
    private fetchFn;
    constructor(fetchFn: ActionHandlerContext["fetch"]);
    callback(req: ClientRequest, opts: RequestOptions): Promise<net.Socket>;
}