This PR fixes an issue where a bunch of warnings would be shown related to sourcemaps. This happens when we are dealing with CSS files that are _not_ Tailwind CSS roots. In that case, in the `transform` step, we return the `src` of that module as-is because we didn't modify anything. However, when nothing changed, you have to return a `NullValue` such as `undefined`. So this is a stupid little fix, but it should get rid of a bunch of annoying warnings. Fixes: #19930 ## Test plan - Added an integration test to mimic the problem - Other tests still pass - Tested it against the reproduction provided in #19930 Before: <img width="1887" height="1763" alt="8oQNG5Lqr2B" src="https://github.com/user-attachments/assets/2d8af456-4176-4f18-92a3-5327e395ac6b" /> After: <img width="1885" height="1404" alt="8oQND5kWSb4" src="https://github.com/user-attachments/assets/7dd98ea4-126b-45d4-9411-0afbacd2c797" /> |
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A utility-first CSS framework for rapidly building custom user interfaces.
Documentation
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Contributing
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@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 },
}),
],
})