expressjsHow can I use Express.js to implement a clean architecture?

Express.js is a web application framework for Node.js that can be used to implement a clean architecture. A clean architecture is an approach to software design that separates the concerns of the application into layers and components.

The following example code shows how to use Express.js to create a clean architecture.

// Create an express app
const express = require('express');
const app = express();

// Create a router
const router = express.Router();

// Add routes to the router
router.get('/', (req, res) => {
  // Render the response
  res.render('index');
});

// Attach the router to the express app
app.use('/', router);

// Start the server
const port = 3000;
app.listen(port, () => {
  console.log(`Server listening on port ${port}`);
});

Output example

Server listening on port 3000

The code consists of the following parts:

1. Require the Express module and create an Express app.
2. Create a router and add routes to it.
3. Attach the router to the Express app.
4. Start the server.

Helpful links

• Express.js
• Clean Architecture

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