express is runable

package.json

@@ -2,12 +2,12 @@
   "name": "kuotata",
   "private": true,
   "version": "0.0.0",
-  "type": "module",
   "scripts": {
     "dev": "vite",
     "build": "vite build",
     "lint": "eslint .",
-    "preview": "vite preview"
+    "preview": "vite preview",
+    "dev-backend": "node --watch src/back/main.js"
   },
   "dependencies": {
     "@tailwindcss/vite": "^4.1.7",

src/back/main.js

@@ -0,0 +1,14 @@
+const express = require('express');
+
+const app = express();
+
+app.use(express.json());
+
+app.get('/', (request, response) => {
+    response.status(200).send('elo fren!')
+})
+
+const PORT = 3003;
+app.listen(PORT, () => {
+  console.log(`Server running on port ${PORT}`);
+});