gvergnaud/ts-pattern

Health v2 · maintenance only

Adoption not part of the score

15137 stars · 171 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

TS-Pattern is an exhaustive pattern matching library for TypeScript with smart type inference. It lets developers express complex branching conditions in a compact, typesafe way with compile-time exhaustiveness checking.

Use cases

• match on discriminated unions in typescript
• exhaustive switch handling for adts
• validate data shape with type-safe patterns
• replace nested if-else conditions with readable matching
• extract nested values from objects and arrays with patterns

When to choose

• you write typescript and want compile-time exhaustiveness checking over unions
• you want a tiny (~2kB) dependency-free branching utility
• you need type-safe data validation and selection in one expression

When to avoid

• you work in plain javascript without type checking
• you only need simple switch statements with few cases
• you need runtime schema validation with detailed error messages

Facets

library · maturity stable

type-system developer-tools programming-languages developer-tools frontend web-development browser pattern-matching type-inference exhaustiveness-checking adt typescript-library nodejs typescript javascript

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