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Revert isNode workerd detection that caused Cloudflare build regression#16997

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ematipico merged 2 commits into
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revert-16720
Jun 9, 2026
Merged

Revert isNode workerd detection that caused Cloudflare build regression#16997
ematipico merged 2 commits into
mainfrom
revert-16720

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@matthewp

@matthewp matthewp commented Jun 8, 2026

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Changes

  • Reverts Fix issue with dynamic routes in complex projects using workerd #16720, which added a Cloudflare-Workers navigator check to the isNode variable in packages/astro/src/runtime/server/render/util.ts. This change caused isNode to return false inside workerd, forcing the rendering pipeline onto renderToReadableStream instead of renderToAsyncIterable. For large prerendered sites on Cloudflare (~14k pages), this caused a ~6x build time regression (6-7 min to 40 min).

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  • No docs needed — this restores previous behavior.

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🦋 Changeset detected

Latest commit: 3339caa

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 398 packages
Name Type
astro Patch
@e2e/astro-linked-lib Patch
@e2e/actions-blog Patch
@e2e/actions-react-19 Patch
@e2e/astro-component Patch
@e2e/astro-envs Patch
@e2e/astro-island-hydration-error Patch
@test/astro-cloudflare-node-prerender-mdx Patch
@test/astro-cloudflare Patch
@e2e/content-collections Patch
@e2e/csp-server-islands Patch
@e2e/css Patch
@test/custom-client-directives Patch
@e2e/dev-toolbar Patch
@e2e/error-cyclic Patch
@e2e/error-sass Patch
@e2e/errors Patch
@e2e/hydration-race Patch
@e2e/i18n Patch
@test/nested-style-bug-e22e Patch
@e2e/preact-compat-component Patch
@e2e/preact-component Patch
@e2e/preact-lazy-component Patch
@e2e/prefetch Patch
@e2e/react-component Patch
@e2e/server-islands-key Patch
@e2e/server-islands Patch
@e2e/solid-circular Patch
@e2e/solid-component Patch
@e2e/solid-recurse Patch
@e2e/svelte-component Patch
@e2e/e2e-tailwindcss Patch
@e2e/ts-resolution Patch
@e2e/view-transitions Patch
@e2e/vite-virtual-modules Patch
@e2e/vue-component Patch
@performance/md Patch
@performance/mdoc Patch
@performance/mdx Patch
@test/0-css Patch
fake-astro-library Patch
@test/actions Patch
@test/alias-path-alias-style Patch
@test/ts-paths-no-baseurl Patch
@test/aliases-tsconfig Patch
@test/aliases Patch
@test/api-routes Patch
@test/asset-query-params-chunks Patch
@test/asset-url-base Patch
@test/astro-pages Patch
@test/astro-assets-prefix Patch
@test/astro-assets Patch
@test/astro-basic Patch
@test/astro-check-errors Patch
@test/astro-check-no-errors Patch
@test/astro-check-watch Patch
@test/astro-children Patch
@test/astro-client-only Patch
@test/astro-component-bundling Patch
@test/astro-component-code Patch
@test/astro-css-bundling Patch
@test/astro-dev-headers Patch
@test/astro-dev-http2 Patch
@test/astro-doctype Patch
@test/astro-dynamic Patch
@test/astro-env-content-collections Patch
@test/astro-env-required-public Patch
@test/astro-env-server-fail Patch
@test/astro-env-server-secret Patch
@test/astro-env Patch
@test/astro-envs Patch
@test/astro-expr Patch
@test/astro-get-static-paths Patch
@test/astro-head Patch
@test/astro-manifest-client-script Patch
@test/astro-manifest-invalid Patch
@test/astro-manifest Patch
@test/astro-markdown-frontmatter-injection Patch
@test/astro-markdown-plugins Patch
@test/astro-markdown-remarkRehype Patch
@test/astro-markdown-skiki-default-color Patch
@test/astro-markdown-skiki-langs Patch
@test/astro-markdown-skiki-themes-custom Patch
@test/astro-markdown-skiki-themes-integrated Patch
@test/astro-markdown-skiki-wrap-false Patch
@test/astro-markdown-skiki-wrap-null Patch
@test/astro-markdown-skiki-wrap-true Patch
@test/astro-markdown-url Patch
@test/astro-markdown Patch
@test/astro-mode Patch
@test/astro-page-directory-url Patch
@test/astro-partial-html Patch
@test/astro-preview-allowed-hosts Patch
@test/astro-preview-headers Patch
@test/astro-public Patch
@test/astro-script-template-dedup Patch
@test/astro-scripts Patch
@test/astro-slots-nested Patch
@test/concurrency Patch
@test/build-readonly-file Patch
@test/cache-memory-query-include Patch
@test/cache-memory-query Patch
@test/client-address-node Patch
@test/code-component Patch
@test/component-library Patch
@test/config-vite-css-target Patch
@test/config-vite Patch
@test/react-container Patch
@test/content-with-spaces-in-folder-name Patch
@test/content-collection-picture-render Patch
@example/content-collection-references Patch
@test/content-collection-tla-svg Patch
@test/content-collections-base Patch
@test/content-collections-empty-dir Patch
@test/content-collections-empty-md-file Patch
@test/content-collections-mutation Patch
@test/content-collections-number-id Patch
@test/content-collections-type-inference Patch
@test/content-collections-with-config-mjs Patch
@test/content-collections Patch
@test/content-frontmatter Patch
@test/content-intellisense Patch
@test/content-layer-loader-schema-function Patch
@test/content-layer-remark-plugins Patch
@test/content-layer Patch
@test/content-ssr-integration Patch
@test/content-static-paths-integration Patch
@test/content Patch
@test/core-image-data-url Patch
@test/core-image-deletion-ssr Patch
@test/core-image-deletion Patch
@test/core-image-errors Patch
@test/core-image-fs-config Patch
@test/core-image-remark-infersize Patch
@test/core-image-layout Patch
@test/core-image-picture-emit-file Patch
@test/core-image-remark-imgattr Patch
@test/core-image-ssg Patch
@test/core-image-ssr Patch
@test/core-image-svg-in-client Patch
@test/core-image-svg Patch
@test/core-image-unconventional-settings Patch
@test/core-image Patch
@test/csp-adapter Patch
@test/csp-fonts Patch
@test/csp Patch
@test/css-assets Patch
@test/css-dangling-references Patch
@test/css-deduplication Patch
@test/css-double-bundle Patch
@test/css-dynamic-import-dev Patch
@test/css-import-as-inline Patch
@test/css-inline-stylesheets Patch
@test/css-no-code-split Patch
@test/css-path-case Patch
@test/css-pure-chunk-query-params Patch
@test/custom-404-injected-from-dep Patch
@test/custom-404-pkg Patch
custom-fetch-error-pages Patch
@test/custom-renderer Patch
@test/data-collections-schema Patch
@test/data-collections Patch
@test/debug-component Patch
@test/dev-container Patch
@test/dev-render Patch
@test/dev-request-url Patch
@test/dynamic-endpoint-collision Patch
@test/dynamic-route-build-file Patch
@test/endpoint-routing Patch
@test/error-bad-js Patch
@test/error-build-location Patch
@test/error-non-error Patch
@test/extension-matching Patch
@test/fetch Patch
@test/fonts Patch
@test/astro-fontsource-package Patch
@test/get-static-paths-pages Patch
@test/glob-pages-css Patch
@test/head-propagation-prerender-env Patch
@test/hmr-markdown Patch
@test/hmr-new-page Patch
@test/hmr-slots-render Patch
@test/hoisted-imports Patch
@test/html-component Patch
@test/html-escape Patch
@test/html-page Patch
@test/html-slots Patch
@test/hydration-race Patch
@test/i18n-client-import Patch
@test/i18n-css-leak-basic Patch
@test/import-ts-with-js Patch
@test/impostor-md-file Patch
@test/integration-add-page-extension Patch
@test/integration-server-setup Patch
@test/jsx-queue-rendering Patch
@test/large-array-solid Patch
@test/legacy-collections-backwards-compat Patch
@test/lightningcss-scoped-nesting Patch
@test/live-loaders Patch
@test/markdown Patch
@test/middleware-dev Patch
@test/middleware-full-ssr Patch
@test/middleware-no-user-middlewaqre Patch
@test/middleware-tailwind Patch
@test/minification-html-jsx Patch
@test/minification-html Patch
@test/non-ascii-path Patch
@test/non-html-pages Patch
@test/page-format Patch
@test/page-level-styles Patch
@test/parallel-components Patch
@test/partials-css-boundary Patch
@test/partials Patch
@test/passthrough-image-service Patch
@test/postcss Patch
@test/preact-compat-component Patch
@test/preact-component Patch
@test/remote-css Patch
@test/request-signal Patch
@test/reuse-injected-entrypoint Patch
@test/root-srcdir-css Patch
@test/scoped-style-strategy Patch
@test/server-entry-fake-adapter Patch
@test/server-entry Patch
@test/server-islands-hybrid Patch
@test/server-islands-ssr Patch
@test/sessions Patch
@test/slots-preact Patch
@test/slots-react Patch
@test/slots-solid Patch
@test/slots-svelte Patch
@test/slots-vue Patch
@test/solid-component Patch
@test/sourcemap Patch
@test/space-in-folder-name Patch
@test/special-chars-in-component-imports Patch
@test/ssr-assets Patch
@test/ssr-dynamic Patch
@test/ssr-partytown Patch
@test/ssr-prerender-get-static-paths Patch
@test/ssr-prerender Patch
@test/ssr-preview Patch
@test/ssr-renderers-static-vue Patch
@test/ssr-request Patch
@test/ssr-hoisted-script Patch
@test/ssr-scripts Patch
@test/static-build-code-component Patch
@test/static-build-dir Patch
@test/static-build-frameworks Patch
@test/static-build-page-url-format Patch
@test/static-build-ssr Patch
@test/static-build Patch
@test/static-redirect Patch
@test/svelte-component Patch
@test/svg-deduplication Patch
@test/tailwindcss Patch
@e2e/third-party-astro Patch
@test/url-import-suffix Patch
@test/view-transitions Patch
@test/virtual-astro-file Patch
@test/vitest Patch
@test/vue-component Patch
@test/vue-with-multi-renderer Patch
@test/db-aliases Patch
@test/db-db-in-src Patch
@test/error-handling Patch
@test/db-integration-only Patch
@test/db-integration Patch
@test/db-libsql-remote Patch
@test/db-local-prod Patch
@test/db-no-apptoken Patch
@test/db-no-seed Patch
@test/recipes Patch
@test/db-static-remote Patch
@test/alpinejs-basics Patch
@test/alpinejs-directive Patch
@test/alpinejs-plugin-script-import Patch
@test/astro-cloudflare-allowed-hosts Patch
@test/astro-cloudflare-astro-dev-platform Patch
@test/astro-cloudflare-astro-env Patch
@test/astro-cloudflare-binding-image-service Patch
@test/astro-cloudflare-cache-provider-wait-until Patch
@test/astro-cloudflare-client-address Patch
@test/astro-cloudflare-compile-image-service Patch
@test/astro-cloudflare-custom-entryfile Patch
@test/astro-cloudflare-dev-image-endpoint Patch
@test/astro-cloudflare-external-image-service Patch
@test/astro-cloudflare-external-redirects Patch
@test/astro-cloudflare-internal-redirects Patch
@test/astro-cloudflare-no-output Patch
@test/astro-cloudflare-prerender-node-env Patch
@test/astro-cloudflare-prerender-queue-consumers Patch
@test/astro-cloudflare-prerender-styles Patch
@test/astro-cloudflare-prerenderer-errors Patch
@test/routing-priority-cloudflare Patch
@test/cf-server-entry Patch
@test/astro-cloudflare-server-island-prerender-framework Patch
@test/astro-cloudflare-sql-import Patch
@test/cf-ssr-deps Patch
@test/astro-cloudflare-static Patch
@test/astro-cloudflare-svelte-rune-deps Patch
@test/astro-cloudflare-top-level-return Patch
@test/cf-user-optimize-deps Patch
@test/astro-cloudflare-vite-plugin Patch
@test/astro-cloudflare-with-base Patch
@test/astro-cloudflare-with-react Patch
@test/astro-cloudflare-with-solid-js Patch
@test/astro-cloudflare-with-svelte Patch
@test/astro-cloudflare-with-vue Patch
@test/astro-cloudflare-wrangler-preview-platform Patch
@test/markdoc-content-collections Patch
@test/content-layer-markdoc Patch
@test/headings-custom Patch
@test/headings Patch
@test/image-assets-custom Patch
@test/image-assets Patch
@test/markdoc-propagated-assets Patch
@test/markdoc-render-with-space Patch
@test/markdoc-render-html Patch
@test/markdoc-render-null Patch
@test/markdoc-render-partials Patch
@test/markdoc-render-simple Patch
@test/markdoc-render-table-attrs Patch
@test/markdoc-render-typographer Patch
@test/markdoc-render-with-components Patch
@test/markdoc-render-with-config Patch
@test/markdoc-render-with-extends-components Patch
@test/markdoc-render-with-indented-components Patch
@test/markdoc-render-with-transform Patch
@test/markdoc-variables Patch
@test/content-layer-rendering Patch
@test/mdx-css-head-mdx Patch
@test/image-remark-imgattr Patch
@test/mdx-astro-container-escape Patch
@test/mdx-frontmatter-injection Patch
@test/netlify-skew-protection Patch
@test/netlify-hosted-astro-project Patch
@test/nodejs-api-route Patch
@test/nodejs-badurls Patch
@test/nodejs-encoded Patch
@test/nodejs-errors Patch
@test/nodejs-headers Patch
@test/nodejs-image Patch
@test/locals Patch
@test/node-middleware Patch
@test/nodejs-prerender-404-500 Patch
@test/nodejs-prerender Patch
@test/nodejs-prerendered-error-page-fetch Patch
@test/nodejs-preview-headers Patch
@test/redirects Patch
@test/node-sessions Patch
@test/ssr-assets-middleware Patch
@test/node-static-headers Patch
@test/node-trailingslash Patch
@test/url Patch
@test/well-known-locations Patch
@test/react-component Patch
@test/sitemap-chunks Patch
@test/sitemap-dynamic Patch
@test/sitemap-i18n-fallback Patch
@test/sitemap-ssr Patch
@test/sitemap-static Patch
@test/sitemap-trailing-slash Patch
async-rendering Patch
conditional-rendering Patch
@test/empty-class Patch
svelte-prop-types Patch
@test/astro-vercel-basic Patch
@test/astro-vercel-image Patch
@test/astro-vercel-integration-assets Patch
@test/vercel-isr Patch
@test/vercel-max-duration Patch
@test/vercel-edge-middleware-with-edge-file Patch
@test/vercel-edge-middleware-without-edge-file Patch
@test/astro-vercel-no-output Patch
@test/astro-vercel-prerendered-error-pages Patch
@test/astro-vercel-redirects-serverless Patch
@test/astro-vercel-redirects Patch
@test/vercel-server-islands Patch
@test/astro-vercel-serverless-prerender Patch
@test/astro-vercel-serverless-with-dynamic-routes Patch
@test/astro-vercel-static-assets Patch
@test/vercel-static-headers Patch
@test/astro-vercel-static Patch
@test/vercel-streaming Patch
@test/astro-vercel-with-web-analytics-enabled-output-as-static Patch
vercel-hosted-astro-project Patch
@test/vue-app-entrypoint-async Patch
@test/vue-app-entrypoint-css Patch
@test/vue-app-entrypoint-no-export-default Patch
@test/vue-app-entrypoint-relative Patch
@test/vue-app-entrypoint-src-absolute Patch
@test/vue-app-entrypoint Patch
@test/vue-basics Patch
vue-prop-types Patch
astro-benchmark Patch
@benchmark/adapter Patch
@benchmark/timer Patch

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@matthewp

matthewp commented Jun 8, 2026

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Fixes #16973

@matthewp matthewp added the pr preview Apply this label to a PR to generate a preview release label Jun 8, 2026
@github-actions github-actions Bot added pkg: astro Related to the core `astro` package (scope) and removed pr preview Apply this label to a PR to generate a preview release labels Jun 8, 2026
@pkg-pr-new

pkg-pr-new Bot commented Jun 8, 2026

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npm i https://pkg.pr.new/astro@16997

npm i https://pkg.pr.new/@astrojs/cloudflare@16997

npm i https://pkg.pr.new/@astrojs/mdx@16997

npm i https://pkg.pr.new/@astrojs/markdown-satteri@16997

commit: 3339caa

@codspeed-hq

codspeed-hq Bot commented Jun 8, 2026

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Merging this PR will not alter performance

✅ 18 untouched benchmarks

Comparing revert-16720 (3339caa) with main (e0703a6)1

Open in CodSpeed

Footnotes

  1. No successful run was found on main (0e8c7e8) during the generation of this report, so e0703a6 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

@matthewp matthewp marked this pull request as ready for review June 8, 2026 16:29
@ematipico ematipico merged commit dc45246 into main Jun 9, 2026
31 checks passed
@ematipico ematipico deleted the revert-16720 branch June 9, 2026 12:25
@astrobot-houston astrobot-houston mentioned this pull request Jun 8, 2026
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@matthewp matthewp mentioned this pull request Jun 9, 2026
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dadezzz pushed a commit to dadezzz/university_notes that referenced this pull request Jun 13, 2026
fix(deps): update astro monorepo to v6.4.5 (#749)
0059616 
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)) | [`6.4.4` → `6.4.5`](https://renovatebot.com/diffs/npm/astro/6.4.4/6.4.5) | ![age](https://developer.mend.io/api/mc/badges/age/npm/astro/6.4.5?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/astro/6.4.4/6.4.5?slim=true) |

---

### Release Notes

<details>
<summary>withastro/astro (astro)</summary>

### [`v6.4.5`](https://github.com/withastro/astro/blob/HEAD/packages/astro/CHANGELOG.md#645)

[Compare Source](https://github.com/withastro/astro/compare/astro@6.4.4...astro@6.4.5)

##### Patch Changes

- [#&#8203;16985](withastro/astro#16985) [`4ecff32`](withastro/astro@4ecff32) Thanks [@&#8203;maximslo](https://github.com/maximslo)! - Fixes the `experimental.logger` destination not being used for the "Server listening on..." startup message. The logger is now resolved before the server starts listening, and `adapterLogger` re-creates itself when the underlying logger changes so the startup message uses the correct destination.

- [#&#8203;16947](withastro/astro#16947) [`e0703a6`](withastro/astro@e0703a6) Thanks [@&#8203;ematipico](https://github.com/ematipico)! - Fixes `Astro.request.url` not reflecting validated `X-Forwarded-Proto`/`X-Forwarded-Host` headers when `security.allowedDomains` is configured. Previously, only `Astro.url` was updated with the forwarded origin while `Astro.request.url` retained the socket-derived URL, causing the two to diverge behind TLS-terminating proxies.

- [#&#8203;16997](withastro/astro#16997) [`dc45246`](withastro/astro@dc45246) Thanks [@&#8203;matthewp](https://github.com/matthewp)! - Reverts a change to `isNode` runtime detection that caused a significant build time regression for Cloudflare adapter users with large prerendered sites

</details>

---

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