@sveltejs/adapter-auto@3.3.1 installs @sveltejs/adapter-vercel@4, which doesn't support Node 22

[arcataroger]

Describe the bug

When trying to use the Vercel CLI to vercel build (or export VERCEL=true; vite build) using @sveltekit/adapter-auto @ ^3.3.1, it will auto-install adapter-vercel @ 4.0.5, which does not support Node 22:

> Using @sveltejs/adapter-auto
error during build:
Error: Unsupported Node.js version: v22.13.0. Please use Node 18 or Node 20 to build your project, or explicitly specify a runtime in your adapter configuration.

Manually specifying and upgrading adapter-vercel to 5.x fixes the issue, but is inappropriate for non-Vercel deployments (which is why we only include adapter-auto, normally).

Reproduction

1. Clone https://github.com/arcataroger/svelte-vercel-node-22
2. Make sure you're on Node 22 with node -v
3. Run npm run buildForVercel (which is just "export VERCEL=true; vite build")
4. Build fails.

Logs

➜  svelte-vercel-node-22 git:(main) npm run buildForVercel

> svelte-vercel-node-22@0.0.1 buildForVercel
> export VERCEL=true; vite build

vite v5.4.11 building SSR bundle for production...
✓ 152 modules transformed.
vite v5.4.11 building for production...
✓ 131 modules transformed.
.svelte-kit/output/client/_app/version.json                                    0.03 kB │ gzip:  0.05 kB
.svelte-kit/output/client/.vite/manifest.json                                  3.04 kB │ gzip:  0.55 kB
.svelte-kit/output/client/_app/immutable/chunks/legacy.l-gooSoS.js             0.04 kB │ gzip:  0.06 kB
.svelte-kit/output/client/_app/immutable/entry/start.BMfUl6yN.js               0.07 kB │ gzip:  0.08 kB
.svelte-kit/output/client/_app/immutable/chunks/index-client.Dq2qwNo1.js       0.33 kB │ gzip:  0.26 kB
.svelte-kit/output/client/_app/immutable/nodes/2.CuuHgxN7.js                   0.36 kB │ gzip:  0.26 kB
.svelte-kit/output/client/_app/immutable/nodes/0.BkMPkyHT.js                   0.38 kB │ gzip:  0.27 kB
.svelte-kit/output/client/_app/immutable/chunks/disclose-version.CwY_hfcb.js   0.98 kB │ gzip:  0.56 kB
.svelte-kit/output/client/_app/immutable/nodes/1.BIRBIz8I.js                   1.26 kB │ gzip:  0.69 kB
.svelte-kit/output/client/_app/immutable/chunks/render.C2360cLY.js             2.49 kB │ gzip:  1.37 kB
.svelte-kit/output/client/_app/immutable/entry/app.Cnv-HcIh.js                 9.59 kB │ gzip:  4.38 kB
.svelte-kit/output/client/_app/immutable/chunks/runtime.DrL31eV1.js           12.65 kB │ gzip:  5.15 kB
.svelte-kit/output/client/_app/immutable/chunks/entry.tk49b0iy.js             31.37 kB │ gzip: 12.26 kB
✓ built in 277ms
.svelte-kit/output/server/.vite/manifest.json                  1.80 kB
.svelte-kit/output/server/entries/pages/_page.svelte.js        0.23 kB
.svelte-kit/output/server/entries/fallbacks/layout.svelte.js   0.25 kB
.svelte-kit/output/server/internal.js                          0.31 kB
.svelte-kit/output/server/chunks/equality.js                   0.67 kB
.svelte-kit/output/server/chunks/index.js                      2.30 kB
.svelte-kit/output/server/entries/fallbacks/error.svelte.js    3.10 kB
.svelte-kit/output/server/chunks/exports.js                    7.54 kB
.svelte-kit/output/server/chunks/internal.js                  43.27 kB
.svelte-kit/output/server/index.js                            95.87 kB
✓ built in 666ms

Run npm run preview to preview your production build locally.

> Using @sveltejs/adapter-auto
error during build:
Error: Unsupported Node.js version: v22.13.0. Please use Node 18 or Node 20 to build your project, or explicitly specify a runtime in your adapter configuration.
    at get_default_runtime (file:///Users/datocms/sites/svelte-vercel-node-22/node_modules/@sveltejs/adapter-vercel/index.js:15:8)
    at Object.adapt (file:///Users/datocms/sites/svelte-vercel-node-22/node_modules/@sveltejs/adapter-vercel/index.js:155:67)
    at Object.adapt (file:///Users/datocms/sites/svelte-vercel-node-22/node_modules/@sveltejs/adapter-auto/index.js:106:19)
    at adapt (file:///Users/datocms/sites/svelte-vercel-node-22/node_modules/@sveltejs/adapter-auto/index.js:117:31)
    at async adapt (file:///Users/datocms/sites/svelte-vercel-node-22/node_modules/@sveltejs/kit/src/core/adapt/index.js:38:2)
    at async finalise (file:///Users/datocms/sites/svelte-vercel-node-22/node_modules/@sveltejs/kit/src/exports/vite/index.js:974:7)
    at async Object.handler (file:///Users/datocms/sites/svelte-vercel-node-22/node_modules/@sveltejs/kit/src/exports/vite/index.js:1004:5)
    at async PluginDriver.hookParallel (file:///Users/datocms/sites/svelte-vercel-node-22/node_modules/rollup/dist/es/shared/node-entry.js:20858:17)
    at async Object.close (file:///Users/datocms/sites/svelte-vercel-node-22/node_modules/rollup/dist/es/shared/node-entry.js:21836:13)
    at async build (file:///Users/datocms/sites/svelte-vercel-node-22/node_modules/vite/dist/node/chunks/dep-CB_7IfJ-.js:65466:17)
➜  svelte-vercel-node-22 git:(main)

System Info

System:
    OS: macOS 14.6.1
    CPU: (8) arm64 Apple M3
    Memory: 50.83 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 22.13.0 - ~/.nvm/versions/node/v22.13.0/bin/node
    Yarn: 1.22.22 - /opt/homebrew/bin/yarn
    npm: 10.9.2 - ~/.nvm/versions/node/v22.13.0/bin/npm
    pnpm: 9.10.0 - /opt/homebrew/bin/pnpm
  Browsers:
    Brave Browser: 131.1.73.101
    Chrome: 131.0.6778.265
    Chrome Canary: 134.0.6957.0
    Edge: 131.0.2903.112
    Safari: 18.0

Severity

serious, but I can work around it

Additional Information

No response