TypeScript Design Patterns

Overview

TypeScript design patterns apply established software design principles within the TypeScript type system to create maintainable, reusable, and type-safe code. This skill should be invoked when writing TypeScript code requiring best practices, building reusable libraries, or creating well-typed application architectures.

Core Principles

• Type Safety: Leverage TypeScript's static typing to catch errors at compile time
• Generics: Write reusable code that works with any type
• Structural Typing: Use interface composition over inheritance
• Utility Types: Leverage built-in utility types (Partial, Pick, Omit, etc.)

Preparation Checklist

• Enable strict mode in tsconfig.json
• Plan type hierarchy for your domain
• Identify opportunities for generics
• Define error handling strategy