Vite throws internal server errors for *any* property on `ModuleInfo` that doesn't exist

[jpzwarte]

Describe the bug

Plugins that try to feature detect anything on ModuleInfo, for example import attributes: https://github.com/jleeson/rollup-plugin-import-css/blob/master/src/index.js#L80, will cause vite to throw an internal server error:

vite/packages/vite/src/node/server/pluginContainer.ts

Line 246 in b135918

`[vite] The "${key}" property of ModuleInfo is not supported.`,

This behavior breaks certain plugins that otherwise would work fine. I've checked by manually removing line 80 in the plugin link above. After that, vite + plugin work fine.

Reproduction

https://github.com/jpzwarte/vite-module-info-internal-server-error

Steps to reproduce

• npm ci
• vite dev

System Info

System:
    OS: macOS 15.5
    CPU: (16) arm64 Apple M4 Max
    Memory: 3.40 GB / 64.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 22.16.0 - /opt/homebrew/bin/node
    Yarn: 1.22.22 - /opt/homebrew/bin/yarn
    npm: 10.9.2 - /opt/homebrew/bin/npm
    pnpm: 9.15.4 - /opt/homebrew/bin/pnpm
  Browsers:
    Chrome: 137.0.7151.120
    Safari: 18.5
    Safari Technology Preview: 26.0
  npmPackages:
    vite: ^6.3.5 => 6.3.5

Used Package Manager

npm

Logs

Click to expand!

❯ vite dev

  VITE v6.3.5  ready in 292 ms

  ➜  Local:   http://127.0.0.1:5173/
  ➜  Network: use --host to expose
  ➜  press h + enter to show help
1:49:22 PM [vite] (client) Pre-transform error: [vite] The "assertions" property of ModuleInfo is not supported.
  Plugin: import-css
  File: /Users/jeroen.zwartepoorte/Projects/vite-module-info-internal-server-error/src/main.css
1:49:22 PM [vite] Internal server error: [vite] The "assertions" property of ModuleInfo is not supported.
  Plugin: import-css
  File: /Users/jeroen.zwartepoorte/Projects/vite-module-info-internal-server-error/src/main.css
      at Object.get (file:///Users/jeroen.zwartepoorte/Projects/vite-module-info-internal-server-error/node_modules/vite/dist/node/chunks/dep-DBxKXgDP.js:42102:19)
      at TransformPluginContext.transform (file:///Users/jeroen.zwartepoorte/Projects/vite-module-info-internal-server-error/node_modules/rollup-plugin-import-css/dist/plugin.js:43:37)
      at async EnvironmentPluginContainer.transform (file:///Users/jeroen.zwartepoorte/Projects/vite-module-info-internal-server-error/node_modules/vite/dist/node/chunks/dep-DBxKXgDP.js:42294:18)
      at async loadAndTransform (file:///Users/jeroen.zwartepoorte/Projects/vite-module-info-internal-server-error/node_modules/vite/dist/node/chunks/dep-DBxKXgDP.js:35735:27)
      at async viteTransformMiddleware (file:///Users/jeroen.zwartepoorte/Projects/vite-module-info-internal-server-error/node_modules/vite/dist/node/chunks/dep-DBxKXgDP.js:37250:24)

Validations

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• The provided reproduction is a minimal reproducible example of the bug.