5bf2efb521
This PR migrates the `@variants` and `@responsive` directives.
In Tailwind CSS v2, these were used to generate certain variants of responsive variants for the give classes. In Tailwind CSS v3, these still worked but were implemented as a no-op such that these directives don't end up in your final CSS.
In Tailwind CSS v4, these don't exist at all anymore, so we can safely get rid of them by replacing them with their contents.
Input:
```css
@variants hover, focus {
.foo {
color: red;
}
}
@responsive {
.bar {
color: blue;
}
}
```
Output:
```css
.foo {
color: red;
}
.bar {
color: blue;
}
```
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| .. | ||
| cli | ||
| postcss | ||
| upgrade | ||
| vite | ||
| package.json | ||
| utils.ts | ||