react-testing-library: does not play well with jest 27

Having the same issue after upgrading to Jest@27. Is anyone working on a fix?

We’re in the process of fixing this in @testing-library/dom. This particular issue should already be fixed in the alpha but it’ll take some time to test it before we can release a new major of @testing-library/react.

🎉 This issue is fixed in version 12.0.0-alpha.2 🎉

The release is available on:

• npm package (@alpha dist-tag)
• GitHub release

I got this error : TypeError: Cannot destructure property 'AsymmetricMatcher' of '_prettyFormat.default.plugins' as it is undefined

My packages installed :

@testing-library/react@12.0.0
@testing-library/dom@8.1.0
jest@27.0.6
ts-jest@27.0.3

We have the same issue. Trying to update a monorepo with 297 test suites to jest v27 caused a full 47 test suites to fail. A couple of issues I saw:

• Something is wrong with promise cleanup. A test of code that relied on .finally() timed out and never finished.
• Something is wrong with timers, both real and fake. It’s possible this is just another symptom of the promise cleanup issue.
• Clearing a mocked Date.now (created using jest.spyOn) failed (Date.now.mockClear() threw an error that mockClear wasn’t a function).
• New messages:ReferenceError: You are trying to access a property or method of the Jest environment after it has been torn down.. These are probably leaks I could fix if I could figure out which test was being torn down.

Jest 27 config file changes I made:

  testEnvironment: 'jsdom',
  timers: 'legacy',
  testRunner: 'jasmine2',

I got this error : TypeError: Cannot destructure property 'AsymmetricMatcher' of '_prettyFormat.default.plugins' as it is undefined

My packages installed :

@testing-library/react@12.0.0
@testing-library/dom@8.1.0
jest@27.0.6
ts-jest@27.0.3

@maximeNaulleau Can you please share which version of pretty-format you have installed? It should be 27^.