create-mern-backend/server.js

CLI to scaffold MERN backend folder structure with .env and server.js

const express = require('express');
const dotenv = require('dotenv');
const cors = require('cors');
const connectDB = require('./config/db');

dotenv.config();
const app = express();
app.use(cors());
app.use(express.json());

connectDB();

app.get('/', (req, res) => {
  res.send('API is running...');
});

const PORT = process.env.PORT || 5000;
app.listen(PORT, () => console.log(`Server running on port ${PORT}`));