fix: propagate errors from prerendered remote responses instead of re-running the function - #16535
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Rich-Harris merged 3 commits intoJul 28, 2026
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Install the latest version of pnpm add https://pkg.svelte.dev/@sveltejs/kit/c/f651e0b26d372a9bc4c2cbbfcf8841d9f7d0e2bdOpen in Note This PR is from a fork. A maintainer must approve approve each commit before it can be built and installed. |
🦋 Changeset detectedLatest commit: f651e0b The changes in this PR will be included in the next version bump. This PR includes changesets to release 1 package
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This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to version-3, this PR will be updated.⚠️ ⚠️ ⚠️ ⚠️ ⚠️ ⚠️ `version-3` is currently in **pre mode** so this branch has prereleases rather than normal releases. If you want to exit prereleases, run `changeset pre exit` on `version-3`.⚠️ ⚠️ ⚠️ ⚠️ ⚠️ ⚠️ # Releases ## @sveltejs/adapter-vercel@7.0.0-next.4 ### Major Changes - breaking: remove support for edge and Node 20 runtimes ([#16520](#16520)) ### Patch Changes - chore: bump `@vercel/nft` dependency ([#16522](#16522)) - Updated dependencies [[`6942ddb`](6942ddb), [`68137d4`](68137d4), [`15dc603`](15dc603), [`a4f1521`](a4f1521), [`629b45d`](629b45d), [`7a7833a`](7a7833a), [`e6591a0`](e6591a0), [`7a7833a`](7a7833a), [`b196a39`](b196a39), [`66bf343`](66bf343), [`4bde76b`](4bde76b), [`d9f05cb`](d9f05cb), [`40efca1`](40efca1), [`8ef5548`](8ef5548), [`9efb8f2`](9efb8f2), [`6a670dc`](6a670dc), [`3416dcc`](3416dcc), [`6850fa5`](6850fa5), [`e6591a0`](e6591a0), [`688bead`](688bead), [`b596610`](b596610), [`0f26c13`](0f26c13), [`110a3db`](110a3db), [`665d467`](665d467), [`9c8c60c`](9c8c60c)]: - @sveltejs/kit@3.0.0-next.13 ## @sveltejs/kit@3.0.0-next.13 ### Major Changes - breaking: replace the `noScroll` and `keepFocus` options of `goto` with a single `reset` option, and the `data-sveltekit-noscroll` and `data-sveltekit-keepfocus` attributes with `data-sveltekit-reset` ([#16558](#16558)) - breaking: deprecate `error(status, {...})` in favour of `error(status, message, {...})` ([#16540](#16540)) ### Minor Changes - feat: add shallow routing to `goto` and deprecate `pushState` and `replaceState` ([#16449](#16449)) - feat: preserve page state set through `goto(..., { state, persistState: true })` across reloads ([#16449](#16449)) ### Patch Changes - chore: deduplicate repeated CSP directive handling ([#16498](#16498)) - fix: avoid Vite dev server reload on initial page request ([#16553](#16553)) - fix: don't set a `null` `accept-language` header on internal `fetch` sub-requests when the incoming request has none ([#16527](#16527)) - fix: correctly detect prerendered paths in server `fetch` when `paths.base` is set ([#16525](#16525)) - fix: don't duplicate remote modules in the generated manifest ([#16532](#16532)) - fix: exclude inlined files from the page's `$app/manifest` immutable list ([#16531](#16531)) - perf: avoid quadratic remote form issue merging ([#16493](#16493)) - fix: don't attempt to serialize fetch responses when the request body is not a string or TypedArray ([#16501](#16501)) - fix: read the error status of `App.Error` in the `prerender` and `query.live` remote functions ([#16529](#16529)) - fix: propagate errors from prerendered remote responses instead of re-running the function ([#16535](#16535)) - fix: respect the status returned from `handleError` on the fallback error page served to error-page sub-requests ([#16528](#16528)) - fix: skip unnecessary `version.json` checks if `updated.current` is already `true` ([#16518](#16518)) - fix: allow generation of $app/tsconfig without TypeScript installed ([#16534](#16534)) - perf: use a `Set` to check element ids when validating fragment links during prerendering ([#16494](#16494)) - fix: only include `_app/immutable` files in `$app/manifest`'s `immutable` in the service worker ([#16531](#16531)) - fix: log errors caught by the Vite dev server handler ([#16550](#16550)) - fix: resolve `root` per instance of the SvelteKit Vite plugin ([#16513](#16513)) - fix: ignore path casing differences when warning about overridden Vite config on Windows ([#16545](#16545)) - fix: preserve the current URL search parameters when submitting a remote form without JavaScript ([#16373](#16373)) - fix: treeshake prerendered remote functions in the right chunks ([#16533](#16533)) - fix: error during development if the adapter does not support instrumentation and it exists ([#16548](#16548)) ## @sveltejs/adapter-netlify@7.0.0-next.5 ### Patch Changes - chore: replace @netlify/functions with @netlify/types for the Context type ([#16542](#16542)) - Updated dependencies [[`6942ddb`](6942ddb), [`68137d4`](68137d4), [`15dc603`](15dc603), [`a4f1521`](a4f1521), [`629b45d`](629b45d), [`7a7833a`](7a7833a), [`e6591a0`](e6591a0), [`7a7833a`](7a7833a), [`b196a39`](b196a39), [`66bf343`](66bf343), [`4bde76b`](4bde76b), [`d9f05cb`](d9f05cb), [`40efca1`](40efca1), [`8ef5548`](8ef5548), [`9efb8f2`](9efb8f2), [`6a670dc`](6a670dc), [`3416dcc`](3416dcc), [`6850fa5`](6850fa5), [`e6591a0`](e6591a0), [`688bead`](688bead), [`b596610`](b596610), [`0f26c13`](0f26c13), [`110a3db`](110a3db), [`665d467`](665d467), [`9c8c60c`](9c8c60c)]: - @sveltejs/kit@3.0.0-next.13 ## @sveltejs/adapter-static@4.0.0-next.2 ### Patch Changes - fix: match adapter-vercel's prerendered redirect handling when deploying to Vercel ([#16497](#16497)) - Updated dependencies [[`6942ddb`](6942ddb), [`68137d4`](68137d4), [`15dc603`](15dc603), [`a4f1521`](a4f1521), [`629b45d`](629b45d), [`7a7833a`](7a7833a), [`e6591a0`](e6591a0), [`7a7833a`](7a7833a), [`b196a39`](b196a39), [`66bf343`](66bf343), [`4bde76b`](4bde76b), [`d9f05cb`](d9f05cb), [`40efca1`](40efca1), [`8ef5548`](8ef5548), [`9efb8f2`](9efb8f2), [`6a670dc`](6a670dc), [`3416dcc`](3416dcc), [`6850fa5`](6850fa5), [`e6591a0`](e6591a0), [`688bead`](688bead), [`b596610`](b596610), [`0f26c13`](0f26c13), [`110a3db`](110a3db), [`665d467`](665d467), [`9c8c60c`](9c8c60c)]: - @sveltejs/kit@3.0.0-next.13 Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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Follow-up to #16529. When the self-fetch of a prerendered remote function falls through to a live server, a thrown error comes back as HTTP 200 with a
type: 'error'body, and theerror()call meant to surface it throws into the same catch as the "no prerendered file" fallback. The error is swallowed and the function runs a second time locally. Unchanged since #13986.The try now covers retrieval only, and an error body throws
HttpErrordirectly, matching what the client does with the same response. Non-dynamic functions hit the treeshaken stub on both paths anyway, so in practice this affectsdynamic: truefunctions: one execution per failure, and SSR shows the same error the client would get. A dynamic function that failed on the cookie-less self-fetch but succeeded locally was previously rescued silently; it now errors.Prerendered redirect bodies still resolve to
undefinedhere; that's #16330's wire format, left alone.Now that #16529 has merged, this is standalone.