/// <reference types="node" />
/// <reference types="node" />
import { OutgoingHttpHeaders } from "node:http";
import type { IncomingMessage, StreamCreator } from "../../http/index.js";
import { OpenNextNodeResponse } from "../../http/openNextResponse.js";
import type { MiddlewareManifest } from "../../types/next-types";
import { InternalEvent, InternalResult } from "../../types/open-next.js";
/**
 *
 * @__PURE__
 */
export declare function isExternal(url?: string, host?: string): boolean;
export declare function convertFromQueryString(query: string): Record<string, string>;
/**
 *
 * @__PURE__
 */
export declare function getUrlParts(url: string, isExternal: boolean): {
    hostname: string;
    pathname: string;
    protocol: string;
    queryString: string;
};
/**
 *
 * @__PURE__
 */
export declare function convertRes(res: OpenNextNodeResponse): InternalResult;
/**
 * Make sure that multi-value query parameters are transformed to
 * ?key=value1&key=value2&... so that Next converts those parameters
 * to an array when reading the query parameters
 * @__PURE__
 */
export declare function convertToQueryString(query: Record<string, string | string[]>): string;
/**
 * Given a raw query string, returns a record with key value-array pairs
 * similar to how multiValueQueryStringParameters are structured
 * @__PURE__
 */
export declare function convertToQuery(querystring: string): Record<string, string | string[]>;
/**
 *
 * @__PURE__
 */
export declare function getMiddlewareMatch(middlewareManifest: MiddlewareManifest): RegExp[];
/**
 *
 * @__PURE__
 */
export declare function escapeRegex(str: string): string;
/**
 *
 * @__PURE__
 */
export declare function unescapeRegex(str: string): string;
/**
 * @__PURE__
 */
export declare function convertBodyToReadableStream(method: string, body?: string | Buffer): ReadableStream<any> | undefined;
/**
 *
 * @__PURE__
 */
export declare function proxyRequest(internalEvent: InternalEvent, res: OpenNextNodeResponse): Promise<void>;
declare global {
    var openNextDebug: boolean;
    var openNextVersion: string;
    var lastModified: Record<string, number>;
}
/**
 *
 * @__PURE__
 */
export declare function fixCacheHeaderForHtmlPages(rawPath: string, headers: OutgoingHttpHeaders): void;
/**
 *
 * @__PURE__
 */
export declare function fixSWRCacheHeader(headers: OutgoingHttpHeaders): void;
/**
 *
 * @__PURE__
 */
export declare function addOpenNextHeader(headers: OutgoingHttpHeaders): void;
/**
 *
 * @__PURE__
 */
export declare function revalidateIfRequired(host: string, rawPath: string, headers: OutgoingHttpHeaders, req?: IncomingMessage): Promise<void>;
export declare function generateMessageGroupId(rawPath: string): string;
/**
 *
 * @__PURE__
 */
export declare function fixISRHeaders(headers: OutgoingHttpHeaders): void;
/**
 *
 * @param internalEvent
 * @param headers
 * @param responseStream
 * @returns
 * @__PURE__
 */
export declare function createServerResponse(internalEvent: InternalEvent, headers: Record<string, string | string[] | undefined>, responseStream?: StreamCreator): OpenNextNodeResponse;