yarn: cannot find module

Question

I have a yarn workspace set up with folders public and server. I am using TypeScript in VS Code. On any module that doesn't have types pre-installed with the package, I get the error in VS Code:

Cannot find module 'x'

However, the IntelliSense will show x as a suggestion. I have both x and @types/x and it seems like it's no difference if I install @types/x. Thanks

Windows 1909 (Latest)
Visual Studio Code 1.43 (Latest)
TypeScript ^3.8.3 (Latest)
Yarn 2.0.0-rc.30 (Latest)

Also, I tried to find type roots for yarn, but didn't. Could someone please tell me where the type root directry is.

Answer 1

From the docs:

To support features like go-to-definition a plugin like ZipFS is needed.

1. Run the following command, which will generate a new directory called .yarn/sdks:

   yarn dlx @yarnpkg/sdks vscode
   

2. For safety reason VSCode requires you to explicitly activate the custom TS settings:

3. Press ctrl+shift+p in a TypeScript file

4. Choose "Select TypeScript Version"

5. Pick "Use Workspace Version"