DOM Testing Library setup does not work in workspaces

[sebastianbuechler]

What version of Bun is running?

1.1.34+5e5e7c60f

What platform is your computer?

Microsoft Windows NT 10.0.22631.0 x64

What steps can reproduce the bug?

1. Clone https://github.com/sebastianbuechler/Bun-Workspaces-DOM-Testing (Contains a minimal workspaces setup with one package and a setup of the Testing Library according to the Bun docs https://bun.sh/guides/test/testing-library)
2. Open ./packages/dom.test.tsx

What is the expected behavior?

No typescript error in ./packages/dom.test.tsx as it is in the same file placed in the root ./dom.test.tsx.

What do you see instead?

Line 9 (expect(myComponent).toBeInTheDocument();) shows a typescript error: Property 'toBeInTheDocument' does not exist on type 'Matchers'.

Additional information

Is it probably just a configuration issue of workspaces?

[probably-neb]

I don't believe the behavior you're seeing is because of Bun, rather the Typescript LSP.

You need to tell the TS LSP to look in the workspace root for types when working in the packages/ directory. To accomplish this you can either:

• Include the types in the root tsconfig.json with something like include: ["."] or by modifying the compilerOptions.typeRoots field and then add "extends": "../tsconfig.json" to packages/tsconfig.json
• Modify packages/tsconfig.json only to have it include types from ../ again with the include or compilerOptions.typeRoots fields