Turbopack: Add a check for node version before allowing workerThreads by bgw · Pull Request #91614 · vercel/next.js

bgw · 2026-03-18T22:30:24Z

We want to start dogfooding workerThreads, but we can only safely do it if you have a new enough node version.

We don't have any sort of strong enforcement around node.js version in front (e.g. you could have a misconfigured nvm or fnm), so we need to check the node version first.

Looks like this:

Related Node.js version bump for front: https://github.com/vercel/front/pull/65059

bgw · 2026-03-18T22:30:38Z

Turbopack: Add a check for node version before allowing workerThreads #91614 👈 (View in Graphite)
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vercel · 2026-03-18T22:33:44Z

Notifying the following users due to files changed in this PR based on this repo's notify modifiers:

@timneutkens, @ijjk, @shuding, @huozhi:

packages/next/src/server/config.ts

nextjs-bot · 2026-03-18T22:40:41Z

Failing test suites

Commit: 5a467fe | About building and testing Next.js

pnpm test-start test/e2e/app-dir/non-root-project-monorepo/non-root-project-monorepo.test.ts (job)

non-root-project-monorepo > import.meta.url > should work during RSC (DD)
non-root-project-monorepo > import.meta.url > should work during SSR (DD)
non-root-project-monorepo > import.meta.url > should work on client-side (DD)
non-root-project-monorepo > monorepo-package > should work during RSC (DD)
non-root-project-monorepo > monorepo-package > should work during SSR (DD)
non-root-project-monorepo > monorepo-package > should work on client-side (DD)

Expand output

● non-root-project-monorepo › monorepo-package › should work during RSC

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● non-root-project-monorepo › monorepo-package › should work during SSR

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● non-root-project-monorepo › monorepo-package › should work on client-side

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● non-root-project-monorepo › import.meta.url › should work during RSC

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● non-root-project-monorepo › import.meta.url › should work during SSR

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● non-root-project-monorepo › import.meta.url › should work on client-side

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

pnpm test-start test/e2e/app-dir/upward-distdir/upward-distdir.test.ts (job)

upward-distdir > should work (DD)

Expand output

● upward-distdir › should work

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

pnpm test-start-turbo test/e2e/filesystem-cache/filesystem-cache.test.ts (turbopack) (job)

filesystem-caching with cache disabled > should cache or not cache loaders (DD)
filesystem-caching with cache disabled > should allow to change files while stopped (RSC change) (DD)
filesystem-caching with cache disabled > should allow to change files while stopped (RCC change) (DD)
filesystem-caching with cache disabled > should allow to change files while stopped (Pages change) (DD)
filesystem-caching with cache disabled > should allow to change files while stopped (rename app page) (DD)
filesystem-caching with cache disabled > should allow to change files while stopped (next config change) (DD)
filesystem-caching with cache disabled > should allow to change files while stopped (env var change) (DD)
filesystem-caching with cache disabled > should allow to change files while stopped (RSC change, RCC change, Pages change, rename app page, next config change, env var change) (DD)
filesystem-caching with cache enabled > should cache or not cache loaders (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (RSC change) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (RCC change) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (Pages change) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (rename app page) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (next config change) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (env var change) (DD)
filesystem-caching with cache enabled > should allow to change files while stopped (RSC change, RCC change, Pages change, rename app page, next config change, env var change) (DD)
filesystem-caching with cache enabled > should emit turbopack-persistence trace spans (DD)

Expand output

● filesystem-caching with cache disabled › should cache or not cache loaders

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache disabled › should cache or not cache loaders

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache disabled › should cache or not cache loaders

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

● filesystem-caching with cache disabled › should allow to change files while stopped (RSC change)

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache disabled › should allow to change files while stopped (RSC change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache disabled › should allow to change files while stopped (RSC change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

● filesystem-caching with cache disabled › should allow to change files while stopped (RCC change)

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache disabled › should allow to change files while stopped (RCC change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache disabled › should allow to change files while stopped (RCC change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

● filesystem-caching with cache disabled › should allow to change files while stopped (Pages change)

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache disabled › should allow to change files while stopped (Pages change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache disabled › should allow to change files while stopped (Pages change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

● filesystem-caching with cache disabled › should allow to change files while stopped (rename app page)

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache disabled › should allow to change files while stopped (rename app page)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache disabled › should allow to change files while stopped (rename app page)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

● filesystem-caching with cache disabled › should allow to change files while stopped (next config change)

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache disabled › should allow to change files while stopped (next config change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache disabled › should allow to change files while stopped (next config change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

● filesystem-caching with cache disabled › should allow to change files while stopped (env var change)

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache disabled › should allow to change files while stopped (env var change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache disabled › should allow to change files while stopped (env var change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

● filesystem-caching with cache disabled › should allow to change files while stopped (RSC change, RCC change, Pages change, rename app page, next config change, env var change)

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache disabled › should allow to change files while stopped (RSC change, RCC change, Pages change, rename app page, next config change, env var change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache disabled › should allow to change files while stopped (RSC change, RCC change, Pages change, rename app page, next config change, env var change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

● filesystem-caching with cache enabled › should cache or not cache loaders

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache enabled › should cache or not cache loaders

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache enabled › should cache or not cache loaders

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

● filesystem-caching with cache enabled › should allow to change files while stopped (RSC change)

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache enabled › should allow to change files while stopped (RSC change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache enabled › should allow to change files while stopped (RSC change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

● filesystem-caching with cache enabled › should allow to change files while stopped (RCC change)

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache enabled › should allow to change files while stopped (RCC change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache enabled › should allow to change files while stopped (RCC change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

● filesystem-caching with cache enabled › should allow to change files while stopped (Pages change)

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache enabled › should allow to change files while stopped (Pages change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache enabled › should allow to change files while stopped (Pages change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

● filesystem-caching with cache enabled › should allow to change files while stopped (rename app page)

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache enabled › should allow to change files while stopped (rename app page)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache enabled › should allow to change files while stopped (rename app page)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

● filesystem-caching with cache enabled › should allow to change files while stopped (next config change)

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache enabled › should allow to change files while stopped (next config change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache enabled › should allow to change files while stopped (next config change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

● filesystem-caching with cache enabled › should allow to change files while stopped (env var change)

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache enabled › should allow to change files while stopped (env var change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache enabled › should allow to change files while stopped (env var change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

● filesystem-caching with cache enabled › should allow to change files while stopped (RSC change, RCC change, Pages change, rename app page, next config change, env var change)

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache enabled › should allow to change files while stopped (RSC change, RCC change, Pages change, rename app page, next config change, env var change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache enabled › should allow to change files while stopped (RSC change, RCC change, Pages change, rename app page, next config change, env var change)

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

● filesystem-caching with cache enabled › should emit turbopack-persistence trace spans

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● filesystem-caching with cache enabled › should emit turbopack-persistence trace spans

next instance is not initialized yet, make sure you call methods on next instance in test body.

  351 |     set: function (_target, key, value) {
  352 |       if (!next) {
> 353 |         throw new Error(
      |               ^
  354 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  355 |         )
  356 |       }

  at Object.set (lib/e2e-utils/index.ts:353:15)
  at Object.<anonymous> (e2e/filesystem-cache/filesystem-cache.test.ts:70:53)

● filesystem-caching with cache enabled › should emit turbopack-persistence trace spans

next instance is not initialized yet, make sure you call methods on next instance in test body.

  342 |     get: function (_target, property) {
  343 |       if (!next) {
> 344 |         throw new Error(
      |               ^
  345 |           'next instance is not initialized yet, make sure you call methods on next instance in test body.'
  346 |         )
  347 |       }

  at Object.get (lib/e2e-utils/index.ts:344:15)
  at stop (e2e/filesystem-cache/filesystem-cache.test.ts:89:18)
  at Object.stop (e2e/filesystem-cache/filesystem-cache.test.ts:110:13)

pnpm test-start test/production/jest/remove-react-properties/remove-react-properties-jest.test.ts (job)

next/jest > data-testid should be removed in production (DD)

Expand output

● next/jest › data-testid should be removed in production

next build failed with code/signal 1

   97 |             if (code || signal)
   98 |               reject(
>  99 |                 new Error(
      |                 ^
  100 |                   `next build failed with code/signal ${code || signal}`
  101 |                 )
  102 |               )

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:99:17)

● Test suite failed to run

TypeError: Cannot read properties of undefined (reading 'destroy')

  49 |     })
  50 |   })
> 51 |   afterAll(() => next.destroy())
     |                       ^
  52 |
  53 |   it('data-testid should be removed in production', async () => {
  54 |     const html = await renderViaHTTP(next.url, '/')

  at Object.destroy (production/jest/remove-react-properties/remove-react-properties-jest.test.ts:51:23)

bgw · 2026-03-18T22:40:36Z

packages/next/src/server/config.ts

 import { basename, extname, join, relative, isAbsolute, resolve } from 'path'
 import { pathToFileURL } from 'url'
 import findUp from 'next/dist/compiled/find-up'
+import semver from 'next/dist/compiled/semver'


We already always pull in this dependency in the CLI to check your node.js version and exit the CLI with an error if you're on an unsupported version.

nextjs-bot · 2026-03-18T22:51:21Z

Stats from current PR

✅ No significant changes detected

📊 All Metrics

📖 Metrics Glossary

Dev Server Metrics:

Listen = TCP port starts accepting connections
First Request = HTTP server returns successful response
Cold = Fresh build (no cache)
Warm = With cached build artifacts

Build Metrics:

Fresh = Clean build (no .next directory)
Cached = With existing .next directory

Change Thresholds:

Time: Changes < 50ms AND < 10%, OR < 2% are insignificant
Size: Changes < 1KB AND < 1% are insignificant
All other changes are flagged to catch regressions

⚡ Dev Server

Metric	Canary	PR	Change	Trend
Cold (Listen)	455ms	455ms	✓	▁▁▁▄█
Cold (Ready in log)	439ms	438ms	✓	▁▁▁▄█
Cold (First Request)	1.145s	1.109s	✓	▁▂▂▃█
Warm (Listen)	456ms	456ms	✓	▁▁▁▅█
Warm (Ready in log)	445ms	444ms	✓	▁▁▁▅█
Warm (First Request)	349ms	350ms	✓	▁▁▁▃█

📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric	Canary	PR	Change	Trend
Cold (Listen)	457ms	457ms	✓	▁▁▁▁▁
Cold (Ready in log)	460ms	459ms	✓	▁▂▂▂▁
Cold (First Request)	2.063s	2.061s	✓	▂▄▄▅▁
Warm (Listen)	506ms	506ms	✓	▁▁▁▁▁
Warm (Ready in log)	460ms	461ms	✓	▁▁▁▁▁
Warm (First Request)	2.064s	2.062s	✓	▁▄▄▅▁

⚡ Production Builds

Metric	Canary	PR	Change	Trend
Fresh Build	3.778s	3.745s	✓	▁▁▁▄█
Cached Build	3.730s	3.781s	✓	▁▁▁▄█

📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric	Canary	PR	Change	Trend
Fresh Build	15.075s	15.122s	✓	▁▂▂▂▁
Cached Build	15.308s	15.357s	✓	▂▃▂▂▂
node_modules Size	484 MB	484 MB	✓	▁▇███

📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles

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Total	715 B	712 B	✅ -3 B

Build Details

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Total	433 B	430 B	✅ -3 B

📦 Webpack

Client

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262-HASH.js gzip	N/A	4.59 kB	-
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Polyfills

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Pages

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Server

Edge SSR

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Build Details

Build Manifests

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Total	715 B	718 B	⚠️ +3 B

Build Cache

	Canary	PR	Change
0.pack gzip	4.3 MB	4.29 MB	🟢 7.4 kB (0%)
index.pack gzip	110 kB	110 kB	✓
index.pack.old gzip	110 kB	110 kB	✓
Total	4.52 MB	4.51 MB	✅ -7.17 kB

🔄 Shared (bundler-independent)

Runtimes

	Canary	PR	Change
app-page-exp...dev.js gzip	334 kB	334 kB	✓
app-page-exp..prod.js gzip	182 kB	182 kB	✓
app-page-tur...dev.js gzip	334 kB	334 kB	✓
app-page-tur..prod.js gzip	181 kB	181 kB	✓
app-page-tur...dev.js gzip	330 kB	330 kB	✓
app-page-tur..prod.js gzip	179 kB	179 kB	✓
app-page.run...dev.js gzip	331 kB	331 kB	✓
app-page.run..prod.js gzip	180 kB	180 kB	✓
app-route-ex...dev.js gzip	76.2 kB	76.2 kB	✓
app-route-ex..prod.js gzip	51.8 kB	51.8 kB	✓
app-route-tu...dev.js gzip	76.2 kB	76.2 kB	✓
app-route-tu..prod.js gzip	51.9 kB	51.9 kB	✓
app-route-tu...dev.js gzip	75.8 kB	75.8 kB	✓
app-route-tu..prod.js gzip	51.6 kB	51.6 kB	✓
app-route.ru...dev.js gzip	75.8 kB	75.8 kB	✓
app-route.ru..prod.js gzip	51.6 kB	51.6 kB	✓
dist_client_...dev.js gzip	324 B	324 B	✓
dist_client_...dev.js gzip	326 B	326 B	✓
dist_client_...dev.js gzip	318 B	318 B	✓
dist_client_...dev.js gzip	317 B	317 B	✓
pages-api-tu...dev.js gzip	43.4 kB	43.4 kB	✓
pages-api-tu..prod.js gzip	33 kB	33 kB	✓
pages-api.ru...dev.js gzip	43.4 kB	43.4 kB	✓
pages-api.ru..prod.js gzip	33 kB	33 kB	✓
pages-turbo....dev.js gzip	52.8 kB	52.8 kB	✓
pages-turbo...prod.js gzip	38.6 kB	38.6 kB	✓
pages.runtim...dev.js gzip	52.8 kB	52.8 kB	✓
pages.runtim..prod.js gzip	38.6 kB	38.6 kB	✓
server.runti..prod.js gzip	62.5 kB	62.5 kB	✓
Total	2.96 MB	2.96 MB	⚠️ +2 B

📎 Tarball URL

https://vercel-packages.vercel.app/next/commits/5a467fe808752f3cee584e44b1a1b334d4d8cf96/next

lukesandberg · 2026-03-18T23:01:05Z

packages/next/src/server/config.ts

+
+      const isBun = !!process.versions.bun
+      const isDeno = !!process.versions.deno
+      if (!isBun && !isDeno) {


can we use a positive test instead? isNode?

You can't check for process.versions.node because bun (and probably deno too, I didn't check) puts fake values there for compatibility reasons.

nextjs-bot added created-by: Turbopack team PRs by the Turbopack team. type: next labels Mar 18, 2026

bgw requested a review from a team March 18, 2026 22:33

bgw marked this pull request as ready for review March 18, 2026 22:33

bgw commented Mar 18, 2026

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lukesandberg approved these changes Mar 18, 2026

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sokra approved these changes Mar 19, 2026

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bgw added 2 commits March 23, 2026 11:58

Turbopack: Add a check for node version before allowing workerThreads

ffdf61b

Update the unit test to use the 'forceWorkerThreads' option

5a467fe

bgw force-pushed the bgw/worker-threads-version-check branch from 6b66d82 to 5a467fe Compare March 23, 2026 19:05

nextjs-bot added the tests label Mar 23, 2026

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Turbopack: Add a check for node version before allowing workerThreads#91614

Turbopack: Add a check for node version before allowing workerThreads#91614
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