typescript-patterns

Discriminated unions in TypeScript ensure type safety by using a shared literal property to narrow types at compile time. This pattern allows you to safely access specific object properties without runtime errors by checking the discriminant property.

The best way to handle runtime validation is using schema-first libraries like Zod or Valibot. These tools validate unknown data inputs at runtime and automatically infer static TypeScript types, ensuring your runtime data matches your compile-time guarantees.

Implement Result types and typed error classes to enforce explicit and safe error management in TypeScript. This strategy replaces unpredictable try-catch blocks by forcing functions to return a success or failure object, making error states visible in your type signatures.

Yes, this guide covers monorepo configuration patterns for both Turborepo and Nx. It provides strategies for efficient build caching and dependency management to optimize your TypeScript project architecture and build performance.

Use branded types when you need to prevent primitive value mixing at compile time, and use the satisfies operator to check a value matches a type without widening it. Both advanced TypeScript patterns enforce stricter type safety constraints without losing inferred types.