Describe the bug

I have a typescript file that only contains typescript interfaces. When I run vitest with coverage I get it reported as red (uncovered) even when the interfaces are referenced by other files that are covered by tests.

The way jest handles this situation is to not count these file as neither covered or uncovered but just empty and colored in gray:

Reproduction

Here is the github repo from the images:

https://github.com/HristoKolev/vite-workshop/tree/6549514d7940d642a51aebcfd049466c3cc25e7b

to run it:

cd vite-app

npm i

npm run test

System Info

System:
    OS: Windows 10 10.0.22621
    CPU: (32) x64 AMD Ryzen 9 7950X 16-Core Processor
    Memory: 14.66 GB / 31.16 GB
  Binaries:
    Node: 18.12.1 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.22.19 - C:\Program Files\nodejs\yarn.CMD
    npm: 9.2.0 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Edge: Spartan (44.22621.1778.0), Chromium (114.0.1823.51)
    Internet Explorer: 11.0.22621.1
  npmPackages:
    @vitejs/plugin-react: ^4.0.0 => 4.0.0
    @vitest/coverage-v8: ^0.32.2 => 0.32.2
    vite: ^4.3.2 => 4.3.9
    vitest: ^0.32.0 => 0.32.2

Used Package Manager

npm

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