Express.js & Node.js Expert

This skill provides comprehensive expert knowledge of Express.js web framework and Node.js runtime for building robust, secure, and performant web applications and API servers.

Express Application Structure

Basic Application Setup

Minimal Express app:

const express = require('express');
const app = express();
const port = process.env.PORT || 3000;

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