How To Write Clean, Modular Express.js Applications

Pretty much since forever, I've stayed away from NodeJS backend development for one reason and one reason only: Almost all Express projects I've started or I've been forced to main

Solution 1:

I generally use 1 file per route and put all my routing files in a routes folder and leverage the Router available in express.

A route file could look like this:

var express = require('express');
var router = express.Router();
router.get('/', function (req, res) {
    res.send('Hello World!');
});

module.exports = router;

Then in the app file, simply add:

var example = require('./routes/example');
app.use('/', example);

The routes in the routing file are relative to the route you declare in app.use.