fix(dev): remove params for prerendered pages

.changeset/nice-hats-live.md

@@ -0,0 +1,5 @@
+---
+"astro": patch
+---
+
+Fixes an issue where prerendered pages had access to query params in dev mode.

packages/astro/e2e/fixtures/view-transitions/src/pages/contact.ts

@@ -1,5 +1,7 @@
 import type { APIContext } from 'astro';
 
+export const prerender = false;
+
 export const POST = async ({ request, redirect }: APIContext) => {
 	const formData = await request.formData();
 	const name = formData.get('name');

packages/astro/e2e/fixtures/view-transitions/src/pages/form-one.astro

@@ -3,6 +3,7 @@ import Layout from '../components/Layout.astro';
 const method = Astro.url.searchParams.get('method') ?? 'POST';
 const enctype = Astro.url.searchParams.get('enctype');
 const postShowThrow = Astro.url.searchParams.has('throw') ?? false;
+export const prerender = false;
 ---
 
 <Layout>

packages/astro/e2e/fixtures/view-transitions/src/pages/form-response.astro

@@ -1,6 +1,8 @@
 ---
 import Layout from '../components/Layout.astro';
 const name = Astro.url.searchParams.get('name');
+
+export const prerender = false;
 ---
 <Layout>
 	<div>Submitted contact: <span id="contact-name">{name}</span></div>

packages/astro/e2e/fixtures/view-transitions/src/pages/form-two.astro

@@ -6,6 +6,8 @@ if(Astro.request.method === 'POST') {
 	const name = formData.get('name');
 	return Astro.redirect(`/form-response?name=${name}`);
 }
+
+export const prerender = false;
 ---
 <Layout>
 	<h2>Contact Form</h2>

packages/astro/src/core/request.ts

@@ -13,6 +13,7 @@ export interface CreateRequestOptions {
 	logger: Logger;
 	ssr: boolean;
 	locals?: object | undefined;
+	removeParams?: boolean;
 }
 
 const clientAddressSymbol = Symbol.for('astro.clientAddress');
@@ -27,13 +28,21 @@ export function createRequest({
 	logger,
 	ssr,
 	locals,
+	removeParams = false,
 }: CreateRequestOptions): Request {
 	let headersObj =
 		headers instanceof Headers
 			? headers
 			: new Headers(Object.entries(headers as Record<string, any>));
 
-	const request = new Request(url.toString(), {
+	if (typeof url === 'string') url = new URL(url);
+
+	// HACK! astro:assets uses query params for the injected route in `dev`
+	if (removeParams && url.pathname !== '/_image') {
+		url.search = '';
+	}
+
+	const request = new Request(url, {
 		method: method,
 		headers: headersObj,
 		body,

packages/astro/src/vite-plugin-astro-server/request.ts

@@ -40,17 +40,6 @@ export async function handleRequest({
 	// Add config.base back to url before passing it to SSR
 	url.pathname = removeTrailingForwardSlash(config.base) + url.pathname;
 
-	// HACK! astro:assets uses query params for the injected route in `dev`
-	if (!buildingToSSR && pathname !== '/_image') {
-		// Prevent user from depending on search params when not doing SSR.
-		// NOTE: Create an array copy here because deleting-while-iterating
-		// creates bugs where not all search params are removed.
-		const allSearchParams = Array.from(url.searchParams);
-		for (const [key] of allSearchParams) {
-			url.searchParams.delete(key);
-		}
-	}
-
 	let body: ArrayBuffer | undefined = undefined;
 	if (!(incomingRequest.method === 'GET' || incomingRequest.method === 'HEAD')) {
 		let bytes: Uint8Array[] = [];

packages/astro/src/vite-plugin-astro-server/route.ts

@@ -229,6 +229,7 @@ export async function handleRoute({
 			logger,
 			ssr: buildingToSSR,
 			clientAddress: buildingToSSR ? incomingRequest.socket.remoteAddress : undefined,
+			removeParams: buildingToSSR === false || route.prerender
 		});
 
 		// Set user specified headers to response object.

packages/astro/test/units/vite-plugin-astro-server/request.test.js

@@ -1,11 +1,14 @@
 import * as assert from 'node:assert/strict';
-import { describe, it } from 'node:test';
+import { after, before, describe, it } from 'node:test';
+import { fileURLToPath } from 'node:url';
+import { createContainer } from '../../../dist/core/dev/container.js';
 import { createLoader } from '../../../dist/core/module-loader/index.js';
 import { createRouteManifest } from '../../../dist/core/routing/index.js';
 import { createComponent, render } from '../../../dist/runtime/server/index.js';
 import { createController, handleRequest } from '../../../dist/vite-plugin-astro-server/index.js';
 import { DevPipeline } from '../../../dist/vite-plugin-astro-server/pipeline.js';
 import { createDevelopmentManifest } from '../../../dist/vite-plugin-astro-server/plugin.js';
+import testAdapter from '../../test-adapter.js';
 import {
 	createAstroModule,
 	createBasicSettings,
@@ -73,4 +76,55 @@ describe('vite-plugin-astro-server', () => {
 			assert.equal(html.includes('<div id="test">'), true);
 		});
 	});
+
+	describe('url', () => {
+		let container;
+		let settings;
+
+		before(async () => {
+			const root = new URL('../../fixtures/api-routes/', import.meta.url);
+			const fileSystem = {
+				'/src/pages/url.astro': `{Astro.request.url}`,
+				'/src/pages/prerendered.astro': `---
+			export const prerender = true;
+			---
+			{Astro.request.url}`,
+			};
+			const fs = createFs(fileSystem, root);
+			settings = await createBasicSettings({
+				root: fileURLToPath(root),
+				output: 'server',
+				adapter: testAdapter(),
+			});
+			container = await createContainer({
+				fs,
+				settings,
+				logger: defaultLogger,
+			});
+		});
+
+		after(async () => {
+			await container.close();
+		});
+
+		it('params are included', async () => {
+			const { req, res, text } = createRequestAndResponse({
+				method: 'GET',
+				url: '/url?xyz=123',
+			});
+			container.handle(req, res);
+			const html = await text();
+			assert.deepEqual(html, '<!DOCTYPE html>http://undefined/url?xyz=123');
+		});
+
+		it('params are excluded on prerendered routes', async () => {
+			const { req, res, text } = createRequestAndResponse({
+				method: 'GET',
+				url: '/prerendered?xyz=123',
+			});
+			container.handle(req, res);
+			const html = await text();
+			assert.deepEqual(html, '<!DOCTYPE html>http://undefined/prerendered');
+		});
+	});
 });