Initial: Claude config with agents, skills, commands, rules and scripts

skills/nodejs.md

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+# Node.js & JavaScript Skill
+
+## Installed Versions
+- Node.js 20.x
+- npm 10.x
+- Claude Code CLI
+
+## Common Commands
+
+### Project Initialization
+```bash
+npm init -y                    # Initialize package.json
+npm install express            # Install dependency
+npm install -D nodemon        # Install dev dependency
+npm install --save-exact       # Install exact version
+```
+
+### Development
+```bash
+npm start                       # Start app
+npm run dev                    # Start with hot reload
+npm test                        # Run tests
+npm run build                   # Build for production
+npm outdated                    # Check for updates
+npm update                      # Update dependencies
+```
+
+### Docker for Node
+```bash
+# Basic Dockerfile
+FROM node:20-alpine
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci --only=production
+COPY . .
+EXPOSE 3000
+CMD ["npm", "start"]
+```
+
+## Project Templates
+
+### Express API
+```javascript
+const express = require('express');
+const app = express();
+const port = 3000;
+
+app.use(express.json());
+app.get('/', (req, res) => res.send('Hello'));
+app.listen(port, () => console.log(`Server on ${port}`));
+```
+
+### Fast Setup
+```bash
+npx create-next-app myapp        # Next.js
+npx create-react-app myapp       # React
+npx create-vue-app myapp         # Vue
+```
+
+## Best Practices
+- Use `npm ci` instead of `npm install` in CI/CD
+- Use `package-lock.json` for reproducible builds
+- Define scripts in package.json for common tasks
+- Use environment variables with `dotenv`