import { HttpRequest, HttpResponse } from "./protocol-http/index.js";
export interface NodeFetchHandlerOptions {
    requestTimeout?: number;
    keepAlive?: boolean;
}
export declare class NodeFetchHandler {
    private config;
    constructor(options?: NodeFetchHandlerOptions);
    handle(request: HttpRequest): Promise<{
        response: HttpResponse;
    }>;
    private buildUrl;
    private serializeBody;
    private getTransformedHeadersFromFetch;
}
export declare const collectFetchBodyString: (streamBody: any) => Promise<string>;
export declare const destroyFetchStream: (stream: ReadableStream | null) => Promise<void>;