code · pull · Mar 11, 2026 · Mar 11, 2026 · Mar 11, 2026 · Mar 11, 2026
diff --git a/.changeset/dirty-breads-wish.md b/.changeset/dirty-breads-wish.md
diff --git a/.changeset/fix-cloudflare-configpath.md b/.changeset/fix-cloudflare-configpath.md
diff --git a/.changeset/quiet-trains-accept.md b/.changeset/quiet-trains-accept.md
@@ -0,0 +1,5 @@
+---
+'@astrojs/cloudflare': patch
+---
+
+Prebundle additional Astro runtime dependencies for Cloudflare development server, speeding up initial start time and preventing required restarts.
diff --git a/.changeset/tall-loops-take.md b/.changeset/tall-loops-take.md
diff --git a/examples/basics/package.json b/examples/basics/package.json
@@ -13,6 +13,6 @@
     "astro": "astro"
   },
   "dependencies": {
-    "astro": "^6.0.2"
+    "astro": "^6.0.3"
   }
 }
diff --git a/examples/blog/package.json b/examples/blog/package.json
@@ -16,7 +16,7 @@
     "@astrojs/mdx": "^5.0.0",
     "@astrojs/rss": "^4.0.17",
     "@astrojs/sitemap": "^3.7.1",
-    "astro": "^6.0.2",
+    "astro": "^6.0.3",
     "sharp": "^0.34.3"
   }
 }
diff --git a/examples/component/package.json b/examples/component/package.json
@@ -18,7 +18,7 @@
   ],
   "scripts": {},
   "devDependencies": {
-    "astro": "^6.0.2"
+    "astro": "^6.0.3"
   },
   "peerDependencies": {
     "astro": "^5.0.0 || ^6.0.0"

diff --git a/examples/container-with-vitest/package.json b/examples/container-with-vitest/package.json
@@ -15,7 +15,7 @@
   },
   "dependencies": {
     "@astrojs/react": "^5.0.0",
-    "astro": "^6.0.2",
+    "astro": "^6.0.3",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "vitest": "^3.2.4"

diff --git a/examples/framework-alpine/package.json b/examples/framework-alpine/package.json
@@ -16,6 +16,6 @@
     "@astrojs/alpinejs": "^0.5.0",
     "@types/alpinejs": "^3.13.11",
     "alpinejs": "^3.15.8",
-    "astro": "^6.0.2"
+    "astro": "^6.0.3"
   }
 }
diff --git a/examples/framework-multiple/package.json b/examples/framework-multiple/package.json
@@ -20,7 +20,7 @@
     "@astrojs/vue": "^6.0.0",
     "@types/react": "^18.3.28",
     "@types/react-dom": "^18.3.7",
-    "astro": "^6.0.2",
+    "astro": "^6.0.3",
     "preact": "^10.28.4",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",

diff --git a/examples/framework-preact/package.json b/examples/framework-preact/package.json
@@ -15,7 +15,7 @@
   "dependencies": {
     "@astrojs/preact": "^5.0.0",
     "@preact/signals": "^2.8.1",
-    "astro": "^6.0.2",
+    "astro": "^6.0.3",
     "preact": "^10.28.4"
   }
 }
diff --git a/examples/framework-react/package.json b/examples/framework-react/package.json
@@ -16,7 +16,7 @@
     "@astrojs/react": "^5.0.0",
     "@types/react": "^18.3.28",
     "@types/react-dom": "^18.3.7",
-    "astro": "^6.0.2",
+    "astro": "^6.0.3",
     "react": "^18.3.1",
     "react-dom": "^18.3.1"
   }

diff --git a/examples/framework-solid/package.json b/examples/framework-solid/package.json
@@ -14,7 +14,7 @@
   },
   "dependencies": {
     "@astrojs/solid-js": "^6.0.0",
-    "astro": "^6.0.2",
+    "astro": "^6.0.3",
     "solid-js": "^1.9.11"
   }
 }
diff --git a/examples/framework-svelte/package.json b/examples/framework-svelte/package.json
@@ -14,7 +14,7 @@
   },
   "dependencies": {
     "@astrojs/svelte": "^8.0.0",
-    "astro": "^6.0.2",
+    "astro": "^6.0.3",
     "svelte": "^5.53.5"
   }
 }
diff --git a/examples/framework-vue/package.json b/examples/framework-vue/package.json
@@ -14,7 +14,7 @@
   },
   "dependencies": {
     "@astrojs/vue": "^6.0.0",
-    "astro": "^6.0.2",
+    "astro": "^6.0.3",
     "vue": "^3.5.29"
   }
 }
diff --git a/examples/hackernews/package.json b/examples/hackernews/package.json
@@ -14,6 +14,6 @@
   },
   "dependencies": {
     "@astrojs/node": "^10.0.0",
-    "astro": "^6.0.2"
+    "astro": "^6.0.3"
   }
 }
diff --git a/examples/integration/package.json b/examples/integration/package.json
@@ -18,7 +18,7 @@
   ],
   "scripts": {},
   "devDependencies": {
-    "astro": "^6.0.2"
+    "astro": "^6.0.3"
   },
   "peerDependencies": {
     "astro": "^4.0.0"

diff --git a/examples/minimal/package.json b/examples/minimal/package.json
@@ -13,6 +13,6 @@
     "astro": "astro"
   },
   "dependencies": {
-    "astro": "^6.0.2"
+    "astro": "^6.0.3"
   }
 }
diff --git a/examples/portfolio/package.json b/examples/portfolio/package.json
@@ -13,6 +13,6 @@
     "astro": "astro"
   },
   "dependencies": {
-    "astro": "^6.0.2"
+    "astro": "^6.0.3"
   }
 }
diff --git a/examples/ssr/package.json b/examples/ssr/package.json
@@ -16,7 +16,7 @@
   "dependencies": {
     "@astrojs/node": "^10.0.0",
     "@astrojs/svelte": "^8.0.0",
-    "astro": "^6.0.2",
+    "astro": "^6.0.3",
     "svelte": "^5.53.5"
   }
 }
diff --git a/examples/starlog/package.json b/examples/starlog/package.json
@@ -9,7 +9,7 @@
     "astro": "astro"
   },
   "dependencies": {
-    "astro": "^6.0.2",
+    "astro": "^6.0.3",
     "sass": "^1.97.3",
     "sharp": "^0.34.3"
   },

diff --git a/examples/toolbar-app/package.json b/examples/toolbar-app/package.json
@@ -16,7 +16,7 @@
   },
   "devDependencies": {
     "@types/node": "^18.17.8",
-    "astro": "^6.0.2"
+    "astro": "^6.0.3"
   },
   "engines": {
     "node": ">=22.12.0"

diff --git a/examples/with-markdoc/package.json b/examples/with-markdoc/package.json
@@ -14,6 +14,6 @@
   },
   "dependencies": {
     "@astrojs/markdoc": "^1.0.0",
-    "astro": "^6.0.2"
+    "astro": "^6.0.3"
   }
 }
diff --git a/examples/with-mdx/package.json b/examples/with-mdx/package.json
@@ -15,7 +15,7 @@
   "dependencies": {
     "@astrojs/mdx": "^5.0.0",
     "@astrojs/preact": "^5.0.0",
-    "astro": "^6.0.2",
+    "astro": "^6.0.3",
     "preact": "^10.28.4"
   }
 }
diff --git a/examples/with-nanostores/package.json b/examples/with-nanostores/package.json
@@ -15,7 +15,7 @@
   "dependencies": {
     "@astrojs/preact": "^5.0.0",
     "@nanostores/preact": "^1.0.0",
-    "astro": "^6.0.2",
+    "astro": "^6.0.3",
     "nanostores": "^1.1.1",
     "preact": "^10.28.4"
   }

diff --git a/examples/with-tailwindcss/package.json b/examples/with-tailwindcss/package.json
@@ -16,7 +16,7 @@
     "@astrojs/mdx": "^5.0.0",
     "@tailwindcss/vite": "^4.2.1",
     "@types/canvas-confetti": "^1.9.0",
-    "astro": "^6.0.2",
+    "astro": "^6.0.3",
     "canvas-confetti": "^1.9.4",
     "tailwindcss": "^4.2.1"
   }

diff --git a/examples/with-vitest/package.json b/examples/with-vitest/package.json
@@ -14,7 +14,7 @@
     "test": "vitest"
   },
   "dependencies": {
-    "astro": "^6.0.2",
+    "astro": "^6.0.3",
     "vitest": "^3.2.4"
   }
 }
diff --git a/packages/astro/CHANGELOG.md b/packages/astro/CHANGELOG.md
@@ -1,5 +1,17 @@
 # astro
 
+## 6.0.3
+
+### Patch Changes
+
+- [#15711](https://github.com/withastro/astro/pull/15711) [`b2bd27b`](https://github.com/withastro/astro/commit/b2bd27bcb605d1e44e94ab922a8d7d2aa685149d) Thanks [@OliverSpeir](https://github.com/OliverSpeir)! - Improves Astro core's dev environment handling for prerendered routes by ensuring route/CSS updates and prerender middleware behavior work correctly across both SSR and prerender environments.
+
+  This enables integrations that use Astro's prerender dev environment (such as Cloudflare with `prerenderEnvironment: 'node'`) to get consistent route matching and HMR behavior during development.
+
+- [#15852](https://github.com/withastro/astro/pull/15852) [`1cdaf9f`](https://github.com/withastro/astro/commit/1cdaf9f488e4db158db2c80ce192890b0b9bfa00) Thanks [@ematipico](https://github.com/ematipico)! - Fixes a regression where the the routes emitted by the `astro:build:done` hook didn't have the `distURL` array correctly populated.
+
+- [#15765](https://github.com/withastro/astro/pull/15765) [`ca76ff1`](https://github.com/withastro/astro/commit/ca76ff1dedafdc764f551e753e0772b54f807fa1) Thanks [@matthewp](https://github.com/matthewp)! - Hardens server island POST endpoint validation to use own-property checks for improved consistency
+
 ## 6.0.2
 
 ### Patch Changes

diff --git a/packages/astro/package.json b/packages/astro/package.json
@@ -1,6 +1,6 @@
 {
   "name": "astro",
-  "version": "6.0.2",
+  "version": "6.0.3",
   "description": "Astro is a modern site builder with web best practices, performance, and DX front-of-mind.",
   "type": "module",
   "author": "withastro",

diff --git a/packages/astro/src/core/constants.ts b/packages/astro/src/core/constants.ts
@@ -81,6 +81,11 @@ export const originPathnameSymbol = Symbol.for('astro.originPathname');
  */
 export const pipelineSymbol = Symbol.for('astro.pipeline');
 
+/**
+ * Use this symbol to opt into handling prerender routes in Astro core dev middleware.
+ */
+export const devPrerenderMiddlewareSymbol = Symbol.for('astro.devPrerenderMiddleware');
+
 /**
  * The symbol used as a field on the request object to store a cleanup callback associated with aborting the request when the underlying socket closes.
  */

diff --git a/packages/astro/src/core/server-islands/endpoint.ts b/packages/astro/src/core/server-islands/endpoint.ts
@@ -84,12 +84,12 @@ export async function getRequestData(
 				const data = JSON.parse(raw);
 
 				// Validate that slots is not plaintext
-				if ('slots' in data && typeof data.slots === 'object') {
+				if (Object.hasOwn(data, 'slots') && typeof data.slots === 'object') {
 					return badRequest('Plaintext slots are not allowed. Slots must be encrypted.');
 				}
 
 				// Validate that componentExport is not plaintext
-				if ('componentExport' in data && typeof data.componentExport === 'string') {
+				if (Object.hasOwn(data, 'componentExport') && typeof data.componentExport === 'string') {
 					return badRequest(
 						'Plaintext componentExport is not allowed. componentExport must be encrypted.',
 					);