Organizing Express Code

As your application grows, keeping everything in one file becomes hard to manage.

To keep your code clean, you can split it into multiple files.

For example, you can move routes into a separate file:

// routes/users.js
const express = require('express');
const router = express.Router();

router.get('/', (req, res) => {
  res.send('users list');
});

module.exports = router;

Then use it in your main file:

// app.js
const express = require('express');
const usersRoutes = require('./routes/users');

const app = express();

app.use('/users', usersRoutes);

app.listen(3000);

This approach helps separate different parts of your application and makes it easier to maintain.

You can also separate logic into different files, often called controllers, but the main idea is to avoid putting everything in one place.