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fix: accept every Node.js version from 26 in adapter-vercel - #17584

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ali-vercel:adapter-vercel-every-node-from-26
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ali-vercel:adapter-vercel-every-node-from-26

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Summary

Let @sveltejs/adapter-vercel accept every Node.js major from 26 onwards, not only even ones, so Node.js 27 builds resolve to nodejs27.x instead of throwing.

Context

#17570 made the adapter accept any even Node.js major with /^nodejs[2-9][02468]\.x$/, because Node.js used to make only even majors LTS. From Node.js 27 onwards every major becomes LTS, and Vercel will support every major from 26 onwards. With 7.0.2, a build on Node.js 27 throws Unsupported Node.js version: v27.x. Please use an even Node version, and runtime: 'nodejs27.x' is rejected.

The regex is now /^nodejs(2[0246-9]|[3-9]\d)\.x$/, which accepts 20, 22 and 24 and every major from 26 to 99. 21, 23 and 25 still throw, because Vercel never had those runtimes. The error messages name the supported versions instead of "even".


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🤖 Generated with Claude Code

ali-vercel and others added 2 commits October 30, 2026 22:45
Vercel supports every Node.js major from 26 onwards, not only even ones,
so Node 27 builds should resolve to `nodejs27.x` instead of throwing.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Install the latest version of @sveltejs/kit from 67dd0a8:

pnpm add https://pkg.svelte.dev/@sveltejs/kit/c/67dd0a8373e59fecb3dca0f520de1bd75f5718f2

Open in pkg.svelte.dev: https://pkg.svelte.dev/repos/kit/pr/17584

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This PR is from a fork. A maintainer must approve approve each commit before it can be built and installed.

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changeset-bot Bot commented Oct 30, 2026

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🦋 Changeset detected

Latest commit: 67dd0a8

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

This PR includes changesets to release 1 package
Name Type
@sveltejs/adapter-vercel Patch

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needs-platform-tests This PR needs to run platform tests in order to merge. pkg:adapter-vercel Pertaining to the Vercel adapter

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