Full-Stack EdgeAvailable
TypeScript Design Patterns
About this course
TypeScript's type system is a design tool, not just a safety net. This course covers branded types, builder and factory patterns, the repository pattern with generics, middleware chains, typed event emitters, state machines, error handling, and DI without a framework.
What you will learn
- The type system as a design tool: branded types and unions
- Builder and factory patterns in TypeScript
- Repository pattern with generics
- Middleware and chain of responsibility
- Event-driven architecture with typed emitters
- State machines with XState and TypeScript
- Error handling: Result type and neverthrow
- Dependency injection without a framework
Your instructor
Ayodele Ajayi
Principal Engineer
Principal Engineer based in Kent, UK, with extensive experience across cloud-native security, platform engineering, and distributed systems. Ayodele has led engineering teams at scale and writes about what he learns — with a bias towards things that actually work in production.