Node.js & npm/pnpm

JavaScript outside the browser

Node.js lets you run JavaScript on servers, scripts, and CLI tools.

Installation

# Verify installation
node --version
npm --version

npm vs pnpm vs yarn

💡 Recommendation: pnpm for new projects.

# Install pnpm
npm install -g pnpm

Create project

# Initialize
mkdir my-project && cd my-project
pnpm init

# Add dependency
pnpm add express

# Add dev dependency
pnpm add -D typescript @types/node

package.json

{
  "name": "my-project",
  "version": "1.0.0",
  "scripts": {
    "dev": "node index.js",
    "build": "tsc",
    "start": "node dist/index.js"
  },
  "dependencies": {
    "express": "^4.18.0"
  },
  "devDependencies": {
    "typescript": "^5.0.0"
  }
}

# Run scripts
pnpm dev
pnpm build

Example: Basic server

import express from 'express'

const app = express()
app.get('/', (req, res) => res.send('Hello!'))
app.listen(3000, () => console.log('http://localhost:3000'))

Practice

→ REST API with Express

Useful links

• 📖 Node.js Docs
• 📖 pnpm Docs