Repository navigation
Fix prerendered pages outputting [object Object] with Cloudflare nodejs_compat and compatibility_date >= 2025-10-01 - #18011
Merged
Merged
Conversation
…dejs_compat When workerd runs with nodejs_compat, Astro's isNode check returns true, causing renderPage to pass an AsyncIterable body to the Response constructor. Workerd's Response does not support this non-standard Node.js extension and stringifies it to "[object Object]". Add isWorkerd detection (via navigator.userAgent) and wrap the AsyncIterable with ReadableStream.from() in workerd. This preserves the faster AsyncIterable render path while producing a standard BodyInit type that workerd accepts. A previous fix (PR #16720) modified isNode to exclude workerd but was reverted (PR #16997) because the renderToReadableStream fallback was slower. This approach avoids that regression by keeping renderToAsyncIterable and only wrapping the output. Fixes #18009
astro-factory
Bot
added
the
fix verified
1 task done
🦋 Changeset detectedLatest commit: edca79d The changes in this PR will be included in the next version bump. Not sure what this means? Click here to learn what changesets are. Click here if you're a maintainer who wants to add another changeset to this PR |
github-actions
Bot
added
pkg: integration
matthewp
approved these changes
Sep 16, 2026
Merged
dadezzz
pushed a commit
to dadezzz/university_notes
that referenced
this pull request
Sep 20, 2026
![Renovate [bot]](https://github.githubassets.com/images/gravatars/gravatar-user-420.png){kind=avatar}
This PR contains the following updates: | Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) | |---|---|---|---| | [astro](https://astro.build) ([source](https://github.com/withastro/astro/tree/HEAD/packages/astro)) | [`7.3.2` → `7.3.3`](https://renovatebot.com/diffs/npm/astro/7.3.2/7.3.3) |  |  | --- ### Release Notes <details> <summary>withastro/astro (astro)</summary> ### [`v7.3.3`](https://github.com/withastro/astro/blob/HEAD/packages/astro/CHANGELOG.md#733) [Compare Source](https://github.com/withastro/astro/compare/[email protected]@7.3.3) ##### Patch Changes - [#​17651](withastro/astro#17651) [`504333c`](withastro/astro@504333c) Thanks [@​sxzz](https://github.com/sxzz)! - Refactors internal version handling to use a smaller, ESM-native dependency - [#​17942](withastro/astro#17942) [`0bc5715`](withastro/astro@0bc5715) Thanks [@​matthewp](https://github.com/matthewp)! - Returns appropriate 400 and 404 responses from the image endpoint for invalid and missing local image paths - [#​17700](withastro/astro#17700) [`b2222fc`](withastro/astro@b2222fc) Thanks [@​winklemad](https://github.com/winklemad)! - Fixes `Astro.preferredLocaleList` returning an empty list when a locale is configured with the object form (`{ path, codes }`) and the browser sends the code with different casing or an underscore, such as `en-US` matching a configured `en-us` - [#​17941](withastro/astro#17941) [`394ff79`](withastro/astro@394ff79) Thanks [@​matthewp](https://github.com/matthewp)! - Fixes `astro preview --ignore-lock` (and `astro dev --ignore-lock`) being refused when run from an AI agent environment. The flag now starts the server in the foreground instead of erroring, since agent detection only inferred background mode and was never explicitly requested. An explicit `--background` combined with `--ignore-lock` still errors. - [#​17928](withastro/astro#17928) [`3277927`](withastro/astro@3277927) Thanks [@​ArmandPhilippot](https://github.com/ArmandPhilippot)! - Fixes TypeScript autocompletion for `getImage()` to suggest all available predefined options. - [#​17928](withastro/astro#17928) [`3277927`](withastro/astro@3277927) Thanks [@​ArmandPhilippot](https://github.com/ArmandPhilippot)! - Fixes a type error in `getImage()` options that allowed passing both `widths` and `densities` at the same time. - [#​17857](withastro/astro#17857) [`2637ed1`](withastro/astro@2637ed1) Thanks [@​Princesseuh](https://github.com/Princesseuh)! - Improves rendering performance - [#​17943](withastro/astro#17943) [`2fc7ce9`](withastro/astro@2fc7ce9) Thanks [@​matthewp](https://github.com/matthewp)! - Fixes a WebAssembly error when importing `astro:actions` in tests that run under `@cloudflare/vitest-pool-workers` - [#​18018](withastro/astro#18018) [`1b5a234`](withastro/astro@1b5a234) Thanks [@​astro-factory](https://github.com/apps/astro-factory)! - Fixes trailing-slash redirect response body pointing to the incoming URL instead of the redirect target. The `location` header was correct, but the HTML body (`<meta http-equiv="refresh">`, `<title>`, and `<a>` tag) contained the original request path without the trailing-slash correction or query string. - [#​17905](withastro/astro#17905) [`eaf70fa`](withastro/astro@eaf70fa) Thanks [@​SudoDevStudio](https://github.com/SudoDevStudio)! - Fixes custom dev toolbar apps losing their UI after client-side navigation with `<ClientRouter />`. - [#​18011](withastro/astro#18011) [`558b301`](withastro/astro@558b301) Thanks [@​astro-factory](https://github.com/apps/astro-factory)! - Fixes prerendered Cloudflare pages rendering as `[object Object]` when `nodejs_compat` is enabled in `wrangler.toml` - [#​17944](withastro/astro#17944) [`ba08e35`](withastro/astro@ba08e35) Thanks [@​matthewp](https://github.com/matthewp)! - Fixes a regression in `astro dev` where writes outside the module graph (for example, `@astrojs/cloudflare`'s `.wrangler/state` files) invalidated the middleware on every request, causing repeated SSR reloads. Such writes no longer invalidate the middleware. - [#​17531](withastro/astro#17531) [`ae837db`](withastro/astro@ae837db) Thanks [@​danilloestrela](https://github.com/danilloestrela)! - Updates `svgo` to `4.0.2` to resolve a security advisory - [#​17953](withastro/astro#17953) [`dbbf10e`](withastro/astro@dbbf10e) Thanks [@​astro-factory](https://github.com/apps/astro-factory)! - Fixes a one-time page reload shortly after the first load on cold dev-server starts when a project has framework components imported from MDX content entries. MDX files are now included in the dev dependency pre-bundling scan, so their framework dependencies are bundled up front instead of being discovered (and reloaded for) at runtime. - [#​17955](withastro/astro#17955) [`4e8ad9a`](withastro/astro@4e8ad9a) Thanks [@​matthewp](https://github.com/matthewp)! - Improves dev server startup time. The content config and dev server app module graphs now begin compiling during server creation without blocking the server from listening. Request handling waits for the shared setup result when needed, cutting `astro dev` ready time by roughly a third on projects with a content config. - [#​17960](withastro/astro#17960) [`9838049`](withastro/astro@9838049) Thanks [@​Chy-Zaber-Bin-Zahid](https://github.com/Chy-Zaber-Bin-Zahid)! - Improves the diagnostics of some Astro errors. - [#​17998](withastro/astro#17998) [`0e5478d`](withastro/astro@0e5478d) Thanks [@​astro-factory](https://github.com/apps/astro-factory)! - Fixes SVG `<style>` elements nested inside `<defs>` or other container elements not being hashed for CSP - [#​17994](withastro/astro#17994) [`80f9f1d`](withastro/astro@80f9f1d) Thanks [@​astro-factory](https://github.com/apps/astro-factory)! - Fixes `experimental.incrementalBuild` restoring pages with stale CSS after a preprocessor partial changes or missing original images referenced by restored pages - [#​17889](withastro/astro#17889) [`8ae6b46`](withastro/astro@8ae6b46) Thanks [@​ajfAfg](https://github.com/ajfAfg)! - Fixes a bug where the dev server stripped the configured `base` from URLs that only share a prefix with it. With `base: '/s'`, requests to `/src/...` were rewritten to `/rc/...` and failed, breaking those pages during development. - [#​17980](withastro/astro#17980) [`cfccafa`](withastro/astro@cfccafa) Thanks [@​gameroman](https://github.com/gameroman)! - Improves JSDoc for fonts api - [#​17953](withastro/astro#17953) [`dbbf10e`](withastro/astro@dbbf10e) Thanks [@​astro-factory](https://github.com/apps/astro-factory)! - Fixes CSS HMR for framework components rendered through content entries after `ClientRouter` navigation - [#​17970](withastro/astro#17970) [`0b4dc3a`](withastro/astro@0b4dc3a) Thanks [@​matthewp](https://github.com/matthewp)! - Improves serialization of transition animation values in generated CSS - [#​17999](withastro/astro#17999) [`30ef3cb`](withastro/astro@30ef3cb) Thanks [@​astro-factory](https://github.com/apps/astro-factory)! - Fixes content collection HMR not updating prerendered pages when an adapter enables a separate prerender environment (e.g. `@astrojs/cloudflare` with `prerenderEnvironment: 'node'`) - [#​18002](withastro/astro#18002) [`312ab49`](withastro/astro@312ab49) Thanks [@​shoutoutuoadi325](https://github.com/shoutoutuoadi325)! - Fixes redirect targets being corrupted when a dynamic route parameter value contains `$` replacement patterns like `$&` - [#​17937](withastro/astro#17937) [`e294953`](withastro/astro@e294953) Thanks [@​matthewp](https://github.com/matthewp)! - Fixes a bug where the `glob()` content loader kept stale entries in the data store after the last file in a collection was deleted. Empty collections are now pruned correctly, and the file watcher is registered in dev so the first file added to an empty collection is picked up without a restart. - [#​17945](withastro/astro#17945) [`750b4db`](withastro/astro@750b4db) Thanks [@​matthewp](https://github.com/matthewp)! - Pre-bundles renderer server entrypoints and the default console logger during dev so they are included in the initial optimization pass, preventing a mid-request re-optimization that could crash the dev server on Cloudflare (workerd). </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - At any time (no schedule defined) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate CLI](https://github.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0NC4xMDMuMiIsInVwZGF0ZWRJblZlciI6IjQ0LjEwMy4yIiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6W119-->
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Changes
nodejs_compatis enabled with acompatibility_dateof 2025-10-01 or later. Previously, every prerendered route silently produced a 15-byte file containing[object Object]instead of HTML, with no build error or warning.nodejs_compatflag exposes aprocessglobal that satisfies Astro'sisNodecheck, causingrenderPageto pass anAsyncIterable<Uint8Array>directly to workerd'sResponseconstructor. Workerd does not supportAsyncIterableas aBodyInittype and falls back to.toString(). The fix addsisWorkerddetection vianavigator.userAgent === 'Cloudflare-Workers'and, when running in workerd, wraps theAsyncIterablewithReadableStream.from()before passing it toResponse. This preserves the fasterrenderToAsyncIterablepath (avoiding the performance regression that caused the previous revert of PR Fix issue with dynamic routes in complex projects using workerd #16720) while producing aBodyInittype workerd accepts.Testing
packages/integrations/cloudflare/test/prerender-nodejs-compat.test.ts, which builds a minimal hybrid project with a prerendered page and asserts the output file contains valid HTML rather than[object Object]under the conditions that trigger the bug.Docs
Closes #18009