Code will not build when using CSS Modules + TypeScript

[nickrttn]

Summary

I'm trying to bundle a React component library. I'm using Typescript and CSS Modules. When I try to build (or watch for that matter), I receive the error:

(rpt2 plugin) Error: ..../project/src/component.tsx(1,20): semantic error TS2307: Cannot find module './component.module.css' or its corresponding type declarations.

I can reproduce this in a reduced test case: https://github.com/nickrttn/microbundle-ts-css-modules

With the types added in the test case as documented in #740 I would have expected this to build. I've also tried to add https://github.com/mrmckeb/typescript-plugin-css-modules instead, with the same results. Strangely, VS Code does pick up on both of these changes.

Expected result

yarn build should work. I've taken the custom tsconfig.json and types from #740.

Actual result

This error during building or watching:

(rpt2 plugin) Error: ..../project/src/component.tsx(1,20): semantic error TS2307: Cannot find module './component.module.css' or its corresponding type declarations.

[rschristian]

Your issue is with this line: https://github.com/nickrttn/microbundle-ts-css-modules/blob/232190ee2f4e9cf80c5ec60aae9d92fae70c821b/package.json#L10

The bad path breaks things. Simply correct it to dist/index.d.ts and it'll build fine.

Need to look into it a bit further to figure out why it breaks in this fashion, but correcting that will get things working again for you.

[nickrttn]

Yep, that is a strange error in response to that typo. Just removing the key completely fixes it as well.

I did expect not to have to add the types manually after the fix for #740 was merged, but that seems to be due to the ambient types not being included on npm?

[rschristian]

Yeah, I'll get that fixed.

[rschristian]

Just had #823 merged in, should ensure those types are accessible to end users.

As for the error message, I believe that's upstream in rollup-plugin-typescript2, though what you wrote would be an error when using tsc all the same. We extrapolate the declaration dir from your types, which in this case would be the project root. That seems to break tsc, which in turn, I'm guessing, throws off rpt2. Not entirely sure why TSC can't handle that, but it can't.

[rschristian]

Closing as the path is invalid in other environments, so this isn't a Microbundle issue.