diff --git a/README.md b/README.md
index b3e5aca..06dd9a4 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,10 @@
 
 A Vite plugin for handling CSS sourcemaps. This plugin ensures that CSS sourcemaps are properly generated and referenced in your Vite builds.
 
+> [!IMPORTANT]
+> This plugin is only meant for the build phase, to generate sourcemap files for your build.
+> It doesn't work on dev mode.
+
 ## Features
 
 - Automatically generates sourcemaps for CSS files
diff --git a/playground/tsconfig.json b/playground/tsconfig.json
deleted file mode 100644
index 1b0362c..0000000
--- a/playground/tsconfig.json
+++ /dev/null
@@ -1,19 +0,0 @@
-{
-  "compilerOptions": {
-    "target": "ES2020",
-    "useDefineForClassFields": true,
-    "module": "ESNext",
-    "lib": ["ES2020", "DOM", "DOM.Iterable"],
-    "skipLibCheck": true,
-    "moduleResolution": "bundler",
-    "allowImportingTsExtensions": true,
-    "resolveJsonModule": true,
-    "isolatedModules": true,
-    "noEmit": true,
-    "strict": true,
-    "noUnusedLocals": true,
-    "noUnusedParameters": true,
-    "noFallthroughCasesInSwitch": true
-  },
-  "include": ["src"]
-}