npm

name	npm
description	Node.js package manager.
license	MIT
metadata	{"author":"vant","version":"1.0"}

NPM

Node.js package manager.

---

When To Use

• package.json exists
• node_modules present
• JavaScript/TypeScript projects

---

What To Do

1. Common Commands

Command	What
npm install	Install deps
npm add	Add package
npm run	Run scripts
npm test	Run tests
npm start	Start app
npm build	Build

2. Install

# Install all deps
npm install

# Add package
npm install lodash
npm install --save-dev typescript

# Global
npm install -g typescript

3. Run Scripts

npm run dev
npm run build
npm run test

4. Package.json

{
  "scripts": {
    "dev": "vite",
    "build": "vite build",
    "test": "jest"
  },
  "dependencies": {
    "lodash": "^4.0.0"
  },
  "devDependencies": {
    "typescript": "^5.0.0"
  }
}

---

Output

## NPM

| Package | Version | Type |
|---------|---------|------|
| [name] | [version] | [dep/devDep] |

### Scripts
- [list]

---

Role: NPM Manager
Input: package.json
Output: Dependencies

Node packages.