ts-jest@27.0.0-next.7 bundles wrong types

[PSeitz]

🐛 Bug Report

jest bundles @types/jest@26.0.20. These types assume that jasmine is the default test runner, but with jest 27, the default test runner is jest-circus which doesn't have the same methods.

npm ls

├─┬ ts-jest@27.0.0-next.7
│ ├─┬ @types/jest@26.0.20

To Reproduce

Install ts-jest@27.0.0-next.7 and jest 27, use the global fail method. it will compile because of the jest types, but fail during run time.

envinfo

System:
    OS: MacOs
    Node version: 10.15

Npm packages:
    jest: 27.0.0-next.3
    ts-jest: 27.0.0-next.7
    typescript: 4.0.2

[ahnpnl]

Hmm what should be the solution ?

[PSeitz]

ideally jest bundles the types in the release and they can be removed, it looks like this is the case for jest 27?

[ahnpnl]

The reasons why we need to add @types/jest are:

• Fix warning issue for Yarn 2
• @types/jest is still required when running in non-ESM mode. Note that @types/jest and @jest/types are 2 different packages. The plan is moving @types/jest to @jest/types but that won't happen soon.

I've been using Jest 27 and I havent seen any issues. Not sure what is yours ?

[ahnpnl]

actually, the problem should be brought to @types/jest so there should be change in that package.