Which Node.js frameworks do you consider the most preferable and why?

The most preferred frameworks for Node.js depend on the task, but among popular and widely used are:

• Express.js — a minimalistic and flexible framework suitable for most web applications. Easy to learn, with a large community and many plugins.

• Koa.js — a more modern and lightweight framework from the creators of Express, using async/await, simplifying asynchronous code.

• NestJS — a framework for building scalable server-side applications using TypeScript, inspired by Angular, supporting modularity and dependency injection.

The choice depends on requirements:

• For simple APIs and rapid prototyping — Express.
• For cleaner asynchronous code — Koa.
• For large projects with architectural needs — NestJS.

Example of a simple Express server:

const express = require('express');
const app = express();

app.get('/', (req, res) => {
  res.send('Hello World!');
});

app.listen(3000, () => {
  console.log('Server started on port 3000');
});