Workspace read project vite.config.ts files but not apply config to that project

[cncolder]

Describe the bug

Vitest has read the vite.config.ts file under each projects. However, these configuration files did not take effect.

Reproduction

Repo: https://github.com/cncolder/vitest-workspace-demo/tree/main

There are two projects a and b under workspace. Vite define __DEV__ constant. If you run vitest in each projects. The test cases will passed.

If you run vitest in the root of workspace. You will find the vite.config.ts is loaded. But not used for replace the __DEV__ constant.

System Info

System:
    OS: macOS 13.5.1
    CPU: (10) arm64 Apple M1 Pro
    Memory: 346.25 MB / 32.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 18.17.1 - ~/.asdf/installs/nodejs/lts/bin/node
    Yarn: 1.22.19 - ~/.asdf/installs/nodejs/lts/bin/yarn
    npm: 9.6.7 - ~/.asdf/plugins/nodejs/shims/npm
    pnpm: 7.18.1 - ~/.asdf/installs/nodejs/lts/bin/pnpm
  Browsers:
    Chrome: 116.0.5845.110
    Edge: 116.0.1938.62
    Safari: 16.6
    Safari Technology Preview: 17.0
  npmPackages:
    vite: ^4.4.9 => 4.4.9 
    vitest: ^0.34.3 => 0.34.3

Used Package Manager

npm

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• Read the Contributing Guidelines.
• Read the docs.
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• The provided reproduction is a minimal reproducible example of the bug.

[johnnybenson]

Good timing! I just created a reproduction of this too.

https://github.com/johnnybenson/vite-workspace-define-bug

[sheremet-va]

Looks like it just doesn't pick up defines 🤔 Everything else is respected.