Simple configuration of Jest with ts-jest produces error "ReferenceError: describe is not defined" in runtime. Here minimal example: https://github.com/PFight/jest-ts-describe-not-defined-problem
What I configured wrong?
I had the same problem but I needed the testEnvironment to be node. The solution is to downgrade to "jest": "^24.9.0". It seems like there's a problem with the latest version when testEnvironment is set to node.
UPDATE
It looks like this issue has been fixed in jest 25.2.2 per this comment https://github.com/facebook/jest/issues/9538#issuecomment-604522345 I haven't tested it though.