revert possible breaking change

packages/astro/src/core/render-context.ts

@@ -37,7 +37,6 @@ import { callMiddleware } from './middleware/callMiddleware.js';
 import { sequence } from './middleware/index.js';
 import { renderRedirect } from './redirects/render.js';
 import { type Pipeline, Slots, getParams, getProps } from './render/index.js';
-import { copyRequest } from './routing/rewrite.js';
 
 export const apiContextRoutesSymbol = Symbol.for('context.routes');
 
@@ -156,7 +155,7 @@ export class RenderContext {
 				if (payload instanceof Request) {
 					this.request = payload;
 				} else {
-					this.request = copyRequest(newUrl, this.request);
+					this.request = new Request(newUrl, this.request);
 				}
 				this.isRewriting = true;
 				this.url = new URL(this.request.url);
@@ -256,7 +255,7 @@ export class RenderContext {
 		if (reroutePayload instanceof Request) {
 			this.request = reroutePayload;
 		} else {
-			this.request = copyRequest(newUrl, this.request);
+			this.request = new Request(newUrl, this.request);
 		}
 		this.url = new URL(this.request.url);
 		this.cookies = new AstroCookies(this.request);

packages/astro/src/core/routing/rewrite.ts

@@ -71,32 +71,3 @@ export function findRouteToRewrite({
 		}
 	}
 }
-
-/**
- * Utility function that creates a new `Request` with a new URL from an old `Request`.
- *
- * @param newUrl The new `URL`
- * @param oldRequest The old `Request`
- */
-export function copyRequest(newUrl: URL, oldRequest: Request): Request {
-	if (oldRequest.bodyUsed) {
-		throw new AstroError(AstroErrorData.RewriteWithBodyUsed);
-	}
-	return new Request(newUrl, {
-		method: oldRequest.method,
-		headers: oldRequest.headers,
-		body: oldRequest.body,
-		referrer: oldRequest.referrer,
-		referrerPolicy: oldRequest.referrerPolicy,
-		mode: oldRequest.mode,
-		credentials: oldRequest.credentials,
-		cache: oldRequest.cache,
-		redirect: oldRequest.redirect,
-		integrity: oldRequest.integrity,
-		signal: oldRequest.signal,
-		keepalive: oldRequest.keepalive,
-		// https://fetch.spec.whatwg.org/#dom-request-duplex
-		// @ts-expect-error It isn't part of the types, but undici accepts it and it allows to carry over the body to a new request
-		duplex: 'half',
-	});
-}