import { RequestContextStorage } from "./RequestContextStorage";
import type { Dispatcher } from "undici-v6";
import type { Dispatcher as DispatcherV8 } from "undici-v8";
import { Context } from "../../agent/Context";
type OnHeaders = Dispatcher.DispatchHandlers["onHeaders"];
type OnResponseStart = DispatcherV8.DispatchHandler["onResponseStart"];
/**
 * Wrap the onHeaders function and check if the response is a redirect. If yes, determine the destination URL and call onRedirect.
 * This is the undici v6 / legacy handler API
 */
export declare function wrapOnHeaders(orig: OnHeaders, requestContext: ReturnType<typeof RequestContextStorage.getStore>, context: Context): OnHeaders;
/**
 * Wrap the onResponseStart function (undici v7 / Node.js v26+ handler API) and check if the response is a redirect.
 * Headers are passed as a plain object with lowercase keys instead of a Buffer array.
 */
export declare function wrapOnResponseStart(orig: OnResponseStart, requestContext: ReturnType<typeof RequestContextStorage.getStore>, context: Context): OnResponseStart;
export {};