jest v28 environment error

Verify canary release

• I verified that the issue exists in Next.js canary release

Provide environment information

Operating System:

• Platform: win32
• Arch: x64
• Version: Windows 7 Ultimate Service Pack 1

Binaries:

• Node: 12.22.1
• npm: N/A
• Yarn: N/A
• pnpm: N/A

Relevant packages:

• next: 12.1.7-canary.4
• react: 17.0.2
• react-dom: 17.0.2

What browser are you using? (if relevant)

No response

How are you deploying your application? (if relevant)

No response

Describe the Bug

With jest of version 28+ npm run test ends in this error:

● Validation Error:

  Test environment jest-environment-jsdom cannot be found. Make sure the testEnvironment configuration option points to an existing node module.

  Configuration Documentation:
  https://jestjs.io/docs/configuration


As of Jest 28 "jest-environment-jsdom" is no longer shipped by default, make sure to install it separately.

I’ve looked at the jest-environment-jsdom page and have some reservations about installing packages without a readme. So I thought jsdom would suffice, but it’s doesn’t and crashes with the same error.

Expected Behavior

Not crashing on test start.

To Reproduce

git clone https://github.com/GabenGar/repros.git repros
cd repros/nextjs/jest-env-error
npm install
npm run test

[balazsorban44]

The docs should already be updated in https://github.com/vercel/next.js/pull/36632, but it won’t show up on the documentation page before our next stable release.

I’ll make sure to update our with-jest example to use Jest 28 as well.

[github-actions[bot]]

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