typescript-dev

Eliminate unsafe TypeScript by applying strict type-safety patterns, using type guards and branded types to enforce precision at compile time, and integrating Zod for runtime validation at API boundaries. This catches type errors early and prevents invalid data from reaching your application logic.

Implement Result types—a discriminated-union pattern that explicitly models success and failure states. Instead of throwing exceptions or returning null, Result types make error handling explicit and type-safe, improving code clarity and maintainability across your codebase.

Define Zod schemas at API boundaries to validate incoming and outgoing data against your TypeScript types. Zod provides runtime validation, transformations, and error reporting, ensuring API contracts are upheld and preventing type mismatches between client and server.

Use discriminated unions to safely model states with different shapes—such as loading, success, and error states. They eliminate invalid state combinations at the type level and make pattern matching exhaustive, reducing bugs and improving code reliability.

Branded types add semantic meaning to primitives (e.g., UserId instead of string) at the type level without runtime overhead. They prevent accidental mixing of unrelated values and enable the compiler to catch logical errors before runtime.

Modern TypeScript versions (5.x+) enable stricter configurations and advanced type features that solidify these patterns. While some patterns work in earlier versions, TS 5.5+ provides better inference, performance, and support for strict mode configurations that maximize type safety.