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@react-native/jest fails to resolve react-native in monorepos #56641

@tido64

Description

@tido64

Description

@react-native/jest fails to resolve react-native in monorepos that use pnpm or Yarn in pnpm mode. @react-native/jest makes direct references to react-native but never declares it as a dependency, hence it cannot find it because the package manager will never install it.

I was going to add react-native as a peer dependency but it looks like this will create a cycle since react-native has a peer dependency on @react-native/jest. Not sure what approach you would prefer here.

This is the workaround we're currently using: https://github.com/microsoft/rnx-kit/blob/18bf2c4c307826d8d075351d1b8aa93387566177/.yarnrc.yml#L37-L40

Steps to reproduce

  1. Clone https://github.com/microsoft/rnx-kit
  2. Remove the workaround mentioned above
  3. Run yarn
  4. Build dependencies leading up to the test app: yarn build-scope @rnx-kit/test-app
  5. Run test: cd packages/test-app; yarn test

React Native Version

0.85.2

Affected Platforms

Other (please specify)

Output of npx @react-native-community/cli info

n/a

Stacktrace or Logs

% yarn test
 FAIL  test/App.test.tsx
  ● Test suite failed to run

    Cannot find module 'react-native/Libraries/AppState/AppState' from '../../node_modules/.store/@react-native-jest-preset-virtual-2eb6229c53/package/jest/mock.js'

      at Resolver._throwModNotFoundError (../../node_modules/.store/jest-resolve-npm-29.7.0-5c36f0eefb/package/build/resolver.js:427:11)
      at mock (../../node_modules/.store/@react-native-jest-preset-virtual-2eb6229c53/package/jest/mock.js:15:19)
      at Object.<anonymous> (../../node_modules/.store/@react-native-jest-preset-virtual-2eb6229c53/package/jest/setup.js:68:19)

----------|---------|----------|---------|---------|-------------------
File      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s
----------|---------|----------|---------|---------|-------------------
All files |       0 |        0 |       0 |       0 |
----------|---------|----------|---------|---------|-------------------
Test Suites: 1 failed, 1 total
Tests:       0 total
Snapshots:   0 total
Time:        0.297 s
Ran all test suites.

MANDATORY Reproducer

https://github.com/microsoft/rnx-kit/tree/tido/bump-react-native

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