Real-World TypeScript Scenarios
Overview
This collection presents real-world TypeScript scenarios with comprehensive CLAUDE.md configurations. Each scenario demonstrates best practices for different domains and project types, helping you understand how to structure and implement production-ready TypeScript applications.
📚 Scenario Collection
🛒 E-Commerce Platform Migration
Migrating a large JavaScript codebase to TypeScript
Key challenges addressed:
- Phased migration strategy for 500+ React components
- Redux state management with proper typing
- API client migration patterns
- Testing during migration
Perfect for: Teams undertaking large-scale TypeScript migrations
🤝 Real-Time Collaboration App
Building Figma-like collaborative features
Technical highlights:
- WebSocket implementation with TypeScript
- Operational Transforms for conflict resolution
- Offline support with IndexedDB
- Real-time cursor and presence awareness
Perfect for: Building collaborative editing tools or real-time applications
💹 Financial Trading Platform
High-frequency trading system with strict requirements
Critical features:
- Type-safe financial calculations with BigInt
- Real-time market data streaming
- Comprehensive audit logging
- Risk management and compliance
Perfect for: Financial applications requiring precision and compliance
🏥 Healthcare Platform
HIPAA-compliant medical records system
Security focus:
- PHI/PII data encryption patterns
- Role-based access control (RBAC)
- Medical device integration (HL7/FHIR)
- Comprehensive audit trails
Perfect for: Healthcare applications with strict compliance requirements
🎓 Workshop Exercises
Interactive TypeScript learning exercises
Exercise topics:
- Type-safe API clients
- State machine implementation
- Advanced error handling
- Event emitter patterns
- Monorepo build systems
Perfect for: Learning advanced TypeScript patterns through practice
🎯 How to Use These Scenarios
For Learning
- Start with your domain - Choose a scenario close to your project type
- Study the patterns - Understand the TypeScript patterns used
- Try the exercises - Practice with the workshop exercises
- Adapt to your needs - Modify patterns for your specific requirements
For Implementation
- Copy the CLAUDE.md - Use as a starting template
- Adapt the types - Modify domain types for your use case
- Follow the patterns - Apply the architectural patterns shown
- Test thoroughly - Use the testing strategies demonstrated
🏗️ Common Patterns Across Scenarios
Type Safety Patterns
- Branded types for domain modeling
- Discriminated unions for state management
- Type guards for runtime safety
- Generics for reusable components
Architecture Patterns
- Clean architecture principles
- Event-driven systems
- Command/Query separation
- Repository patterns
Error Handling
- Result types for explicit error handling
- Custom error hierarchies
- Graceful degradation
- Comprehensive logging
Performance Optimization
- Efficient data structures
- Caching strategies
- Lazy loading patterns
- WebSocket optimization
📋 Quick Reference
Choosing a Scenario
| Your Project Type | Recommended Scenario |
|---|---|
| SaaS Application | E-Commerce Migration |
| Collaborative Tool | Real-Time Collaboration |
| Financial App | Financial Trading |
| Healthcare App | Healthcare Platform |
| Learning TypeScript | Workshop Exercises |
Key Technologies Used
- Frontend: React, Next.js, Vue.js
- State Management: Redux, Zustand, MobX
- Real-time: WebSockets, Server-Sent Events
- Validation: Zod, io-ts, Yup
- Testing: Jest, Vitest, Testing Library
- Build Tools: Vite, Webpack, ESBuild
🚀 Getting Started
-
Choose Your Scenario
- Review the overview of each scenario
- Pick one that matches your domain
-
Study the CLAUDE.md
- Understand the configuration approach
- Note the domain-specific patterns
-
Implement Gradually
- Start with core types
- Build out the architecture
- Add features incrementally
-
Practice with Exercises
- Try the workshop exercises
- Build confidence with patterns
- Experiment with variations
🔗 Related Resources
Project Templates
Learning Resources
Community
🧭 Quick Navigation
← Back to Project Templates | E-Commerce → | Real-Time → | Financial → | Healthcare → | Exercises →