Claude Code Tips Collection - Productivity-Boosting Practical Techniques¶

# Auto-approve with understanding of risks
claude --dangerously-skip-permissions "Analyze all project files and report issues"

# Or use Shift+Tab to cycle modes
# Plan Mode → Normal Mode → Auto-Accept Mode

# CLAUDE.md
## Project Overview
React + TypeScript + Tailwind CSS Web Application

## Development Rules
- Follow ESLint + Prettier configuration
- Create components as functional components
- Tests are mandatory (Jest + Testing Library)
- Security-first approach (XSS/CSRF protection)

## Common Commands
- Development server: `npm run dev`
- Run tests: `npm run test`
- Build: `npm run build`

# Save to ~/.claude/templates/
echo "Please review the following code and identify improvements from performance and security perspectives:" > code-review-template.txt

# Usage
claude "$(cat ~/.claude/templates/code-review-template.txt) $(cat src/components/UserForm.tsx)"

# Pattern 1: Resolve specific technical debt
claude "Convert all React Class Components to Function Components across the project"

# Pattern 2: Security enhancement
claude "Add CSRF protection and rate limiting to all API endpoints"

# Pattern 3: Performance optimization
claude "Implement image lazy loading and React.memo for heavy components"

# New feature implementation
claude "Implement user authentication functionality and create these test cases:
- Successful login/logout
- Error handling for invalid credentials
- Token expiration handling
- Session management tests"

# API specification generation
claude "Generate OpenAPI specification from existing Express server code"

# Auto-update README.md
claude "Analyze current project state and update README.md with latest configuration"

# Phase 1: Foundation design
claude "Implement e-commerce product search functionality in stages.
Phase 1: Start with database design and basic API endpoints"

# Phase 2: Feature expansion (after Phase 1 completion)
claude "Product search Phase 2: Add filtering and sorting functionality"

# Phase 3: UX improvement (final stage)
claude "Product search Phase 3: Implement search suggestions and autocomplete"

# Step 1: Error analysis
claude "Analyze the following error log and identify the cause:
[Paste error log]"

# Step 2: Solution presentation
claude "Present 3 solutions for the above error in priority order"

# Step 3: Implementation
claude "Implement the safest and most effective solution"

# Comprehensive code review
claude "Review changed files from these perspectives:
1. Coding standards compliance
2. Performance issues
3. Security vulnerabilities
4. Test coverage
5. Documentation update requirements"

# Log pattern analysis
claude "Analyze past week's error logs and report frequent issues with solutions"

# Performance analysis
claude "Identify bottlenecks from application performance logs and propose optimization plans"

# Environment configuration optimization
claude "Review Docker settings and CI/CD pipeline to eliminate environment differences"

# Dependency management
claude "Analyze package.json and lock files to resolve version conflicts"

# Security check
claude "Execute security audit from these perspectives:
- SQL injection protection
- XSS protection
- CSRF protection
- Authentication/authorization vulnerabilities
- Data encryption status"

# Desktop to mobile optimization
claude "Optimize this desktop React component for tablets and smartphones"

# Accessibility compliance
claude "Add WCAG 2.1 AA level accessibility compliance to existing UI components"

# Custom class generation
claude "Analyze frequently used style patterns and create reusable Tailwind class sets"

# Style optimization
claude "Identify and remove unused Tailwind classes to reduce CSS bundle size"

# Micro-interactions
claude "Implement smooth animations for button clicks, page transitions, and form submissions"

# Loading state improvements
claude "Implement skeleton screens and progress bars during data fetching"

# CI/CD pipeline construction
claude "Create GitHub Actions workflow with these requirements:
- Pull request: Run tests, lint, security checks
- Merge: Build, staging deployment
- Release tag: Production deployment"

# Test strategy construction
claude "Build automated test execution environment for unit, integration, and E2E tests.
Use Jest + Testing Library + Cypress with 90% coverage target"

# Log & metrics setup
claude "Configure performance monitoring and error tracking for Node.js application.
Use Prometheus + Grafana + Sentry"

# Technical comparison analysis
claude "Compare React state management libraries (Redux, Zustand, Jotai) and 
propose optimal choice for project with rationale"

# Best practices research
claude "Research 2025 frontend development best practices and propose 
applicability and implementation methods for current project"

# Technical specification updates
claude "Update API specifications and technical design documents according to codebase changes"

# Developer guide creation
claude "Create onboarding materials for new developers joining the project"

# Technical debt visualization
claude "Analyze entire project, list technical debt in priority order, 
and propose improvement plan"

# Dependency optimization
claude "Analyze package dependencies and propose removal of unnecessary dependencies 
and updates for packages with security vulnerabilities"