Creating a file to will handle all routes related to the user resource.

Router.js

const express = require('express');

const router = express.Router(); 


router.get('/', (req, res) => {
  res.status(200).send('hello from the GET /users endpoint');
});

router.get('/:id', (req, res) => {
  res.status(200).send('hello from the GET /users/:id endpoint');
});

router.post('/', (req, res) => {
  res.status(200).send('hello from the POST /users endpoint');
});


module.exports = router; 

server.js

const express = require('express');

const userRoutes = require('./users/userRoutes');
const productRoutes = require('./products/productRoutes');
const clientRoutes = require('./clients/clientRoutes');

const server = express();

server.use('/users', userRoutes);
server.use('/products', productRoutes);
server.use('/clients', clientRoutes);

server.listen(8000, () => console.log('API running on port 8000'));