**Is your feature request related to a problem? Please describe.** I'm using Svelte Kit and the amazing [protobuf-ts](https://github.com/timostamm/protobuf-ts). I'm having this error:  As [@timostamm noted](https://github.com/timostamm/protobuf-ts/issues/94#issuecomment-814191068) this error is due to this new [`svelte-preprocess`'s Typescript limitation](https://github.com/sveltejs/svelte-preprocess/issues/206). But **that makes it frustrating if not impossible to work** with libraries like @timostamm's amazing one. **Describe the solution you'd like** I don't know! :( **Describe alternatives you've considered** I tried to change and remove `.tsconfig`'s `importsNotUsedAsValues` prop but the error is still there. **How important is this feature to you?** I'm pretty worried. We CANNOT change each generated file every time we re-generate. **Additional context** This is the example repo: https://github.com/frederikhors/protobuf-ts-issue-94. I'm using Win 10 64, node v14.16.0, npm v7.8.0. **Steps to reproduce**: - clone it with `git clone https://github.com/frederikhors/protobuf-ts-issue-94.git` - `npm install` - `npm run dev -- --open` - click on "Protobuf" top menu link - the error shows up **Please HELP ME!**