50daebded0
## Summary
Under Vite's experimental `bundledDev` mode, the `hotUpdate` hook in
`@tailwindcss/vite` gets called without a `server`. Vite only passes `{
type, file, modules }` here, but the hook loops over
`Object.values(server.environments)`, so editing any file (JS, CSS, or
HTML) throws `TypeError: Cannot read properties of undefined (reading
'environments')` and the dev server build fails.
The fix returns early when `server` is missing. Those environment loops
only look at environments other than the current one, and the
server-level `hot`/`ws` reload channels don't exist in this mode, so
bailing out leaves the classic (non-`bundledDev`) dev path untouched.
Fixes #20378
## Test plan
- Added a unit test that calls `hotUpdate` without a `server` and checks
it doesn't throw. It fails on the current code and passes with the
guard.
- Reproduced with a Vite 8 project using `experimental.bundledDev:
true`: before the change, editing any JS/CSS/HTML file crashed the dev
server; after it, edits work.
- `pnpm run test` and the `@tailwindcss/vite` integration suite both
pass.
[ci-all]
---------
Co-authored-by: Robin Malfait <malfait.robin@gmail.com>
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A utility-first CSS framework for rapidly building custom user interfaces.
Documentation
For full documentation, visit tailwindcss.com.
Community
For help, discussion about best practices, or feature ideas:
Discuss Tailwind CSS on GitHub
Contributing
If you're interested in contributing to Tailwind CSS, please read our contributing docs before submitting a pull request.
@tailwindcss/vite plugin API
Enabling or disabling Lightning CSS
By default, this plugin detects whether or not the CSS is being built for production by checking the NODE_ENV environment variable. When building for production Lightning CSS will be enabled otherwise it is disabled.
If you want to always enable or disable Lightning CSS the optimize option may be used:
import tailwindcss from '@tailwindcss/vite'
import { defineConfig } from 'vite'
export default defineConfig({
plugins: [
tailwindcss({
// Disable Lightning CSS optimization
optimize: false,
}),
],
})
It's also possible to keep Lightning CSS enabled but disable minification:
import tailwindcss from '@tailwindcss/vite'
import { defineConfig } from 'vite'
export default defineConfig({
plugins: [
tailwindcss({
// Enable Lightning CSS but disable minification
optimize: { minify: false },
}),
],
})