TypeScript patterns recommended
TypeScript Generics
TypeScript generics patterns for reusable, type-safe code including constraints, inference, and common patterns.
- Difficulty
- intermediate
- Read time
- 1 min read
- Version
- v1.0.0
- Confidence
- established
- Last updated
Quick Reference
TypeScript Generics: Use constraints (extends) to require properties. Let inference work - don't over-annotate. Use descriptive names (TData, TResponse) for complex generics. Prefer method generics over class generics when type is per-call. Default type parameters for optional generics.
Use When
- Creating reusable type-safe functions
- Building generic data structures
- Designing flexible APIs
- Working with unknown data shapes
Skip When
- Simple functions with known types
- When union types suffice
TypeScript Generics
TypeScript generics patterns for reusable, type-safe code including constraints, inference, and common patterns.