Add Rspack optional peer dependency for @tailwindcss/webpack

packages/@tailwindcss-webpack/README.md

@@ -39,7 +39,7 @@ If you're interested in contributing to Tailwind CSS, please read our [contribut
 
 ## @tailwindcss/webpack
 
-A webpack loader for Tailwind CSS v4.
+A webpack / Rspack loader for Tailwind CSS v4.
 
 ## Installation
 
@@ -49,6 +49,8 @@ npm install @tailwindcss/webpack
 
 ### Usage
 
+- webpack:
+
 ```javascript
 // webpack.config.js
 const MiniCssExtractPlugin = require('mini-css-extract-plugin')
@@ -66,6 +68,25 @@ module.exports = {
 }
 ```
 
+- Rspack:
+
+```javascript
+// rspack.config.mjs
+import { rspack } from '@rspack/core'
+
+export default {
+  plugins: [new rspack.CssExtractRspackPlugin()],
+  module: {
+    rules: [
+      {
+        test: /\.css$/i,
+        use: [rspack.CssExtractRspackPlugin.loader, 'css-loader', '@tailwindcss/webpack'],
+      },
+    ],
+  },
+}
+```
+
 Then create a CSS file that imports Tailwind:
 
 ```css

packages/@tailwindcss-webpack/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@tailwindcss/webpack",
   "version": "4.3.0",
-  "description": "A webpack loader for Tailwind CSS v4.",
+  "description": "A webpack / Rspack loader for Tailwind CSS v4.",
   "license": "MIT",
   "repository": {
     "type": "git",
@@ -41,6 +41,15 @@
     "webpack": "catalog:"
   },
   "peerDependencies": {
-    "webpack": "^5"
+    "@rspack/core": "^1.0.0 || ^2.0.0",
+    "webpack": "^5.0.0"
+  },
+  "peerDependenciesMeta": {
+    "@rspack/core": {
+      "optional": true
+    },
+    "webpack": {
+      "optional": true
+    }
   }
 }