feat: enable to skip overriding global Request and Response classes

src/listener.ts

@@ -1,7 +1,7 @@
 import type { IncomingMessage, ServerResponse, OutgoingHttpHeaders } from 'node:http'
 import type { Http2ServerRequest, Http2ServerResponse } from 'node:http2'
-import { getAbortController, newRequest } from './request'
-import { cacheKey, getInternalBody } from './response'
+import { getAbortController, newRequest, Request as LightweightRequest } from './request'
+import { cacheKey, getInternalBody, Response as LightweightResponse } from './response'
 import type { CustomErrorHandler, FetchCallback, HttpBindings } from './types'
 import { writeFromReadableStream, buildOutgoingHttpHeaders } from './utils'
 import { X_ALREADY_SENT } from './utils/response/constants'
@@ -139,8 +139,20 @@ const responseViaResponseObject = async (
 
 export const getRequestListener = (
   fetchCallback: FetchCallback,
-  options: { errorHandler?: CustomErrorHandler } = {}
+  options: {
+    errorHandler?: CustomErrorHandler
+    overrideGlobalObjects?: boolean
+  } = {}
 ) => {
+  if (options.overrideGlobalObjects !== false && global.Request !== LightweightRequest) {
+    Object.defineProperty(global, 'Request', {
+      value: LightweightRequest,
+    })
+    Object.defineProperty(global, 'Response', {
+      value: LightweightResponse,
+    })
+  }
+
   return async (
     incoming: IncomingMessage | Http2ServerRequest,
     outgoing: ServerResponse | Http2ServerResponse

src/request.ts

@@ -20,9 +20,6 @@ export class Request extends GlobalRequest {
     super(input, options)
   }
 }
-Object.defineProperty(global, 'Request', {
-  value: Request,
-})
 
 const newRequestFromIncoming = (
   method: string,

src/response.ts

@@ -80,9 +80,6 @@ export class Response {
 })
 Object.setPrototypeOf(Response, GlobalResponse)
 Object.setPrototypeOf(Response.prototype, GlobalResponse.prototype)
-Object.defineProperty(global, 'Response', {
-  value: Response,
-})
 
 const stateKey = Reflect.ownKeys(new GlobalResponse()).find(
   (k) => typeof k === 'symbol' && k.toString() === 'Symbol(state)'

src/server.ts

@@ -5,7 +5,9 @@ import type { Options, ServerType } from './types'
 
 export const createAdaptorServer = (options: Options): ServerType => {
   const fetchCallback = options.fetch
-  const requestListener = getRequestListener(fetchCallback)
+  const requestListener = getRequestListener(fetchCallback, {
+    overrideGlobalObjects: options.overrideGlobalObjects,
+  })
   // ts will complain about createServerHTTP and createServerHTTP2 not being callable, which works just fine
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
   const createServer: any = options.createServer || createServerHTTP

src/types.ts

@@ -69,6 +69,7 @@ type ServerOptions =
 
 export type Options = {
   fetch: FetchCallback
+  overrideGlobalObjects?: boolean
   port?: number
   hostname?: string
 } & ServerOptions

test/request.test.ts

@@ -1,5 +1,14 @@
 import type { IncomingMessage } from 'node:http'
-import { newRequest, Request, GlobalRequest, getAbortController } from '../src/request'
+import {
+  newRequest,
+  Request as LightweightRequest,
+  GlobalRequest,
+  getAbortController,
+} from '../src/request'
+
+Object.defineProperty(global, 'Request', {
+  value: LightweightRequest,
+})
 
 describe('Request', () => {
   describe('newRequest', () => {

test/response.test.ts

@@ -1,8 +1,12 @@
 import { createServer, type Server } from 'node:http'
 import type { AddressInfo } from 'node:net'
-import { GlobalResponse } from '../src/response'
+import { GlobalResponse, Response as LightweightResponse } from '../src/response'
 
-class NextResponse extends Response {}
+Object.defineProperty(global, 'Response', {
+  value: LightweightResponse,
+})
+
+class NextResponse extends LightweightResponse {}
 
 class UpperCaseStream extends TransformStream {
   constructor() {