fix: playground not working

Author: nekomeowww

apps/playground/vite.config.ts

@@ -12,11 +12,6 @@ export default defineConfig({
   optimizeDeps: {
     exclude: ['@vue/repl'],
   },
-  build: {
-    rollupOptions: {
-      external: ['vue'],
-    },
-  },
   plugins: [
     // https://github.com/posva/unplugin-vue-router
     VueRouter({