TypeScript Type Safety Expert

What problem does it solve?

This skill provides expert guidance on advanced TypeScript patterns, helping developers build robust, error-free applications by leveraging powerful type-safety features. It addresses common issues like runtime type errors, inconsistent data structures, and lack of clarity in complex codebases.

Core Features & Use Cases

• Advanced Type Patterns: Implement branded types, discriminated unions, template literal types, and recursive types for precise data modeling.
• Utility Type Combinations: Master DeepPartial, RequireKeys, NonNullableKeys, and Params for flexible type manipulation.
• Type-Safe API Clients: Build API clients that guarantee compile-time validation for requests and responses.
• Builder Pattern with Type State: Design fluent APIs with type-safe state transitions.
• Zod Integration: Combine compile-time types with runtime validation for end-to-end data integrity.
• Use Case: Refactor an existing JavaScript codebase to TypeScript, applying advanced type patterns to eliminate common runtime errors and improve code maintainability and readability.

Quick Start

Show me how to use branded types to prevent mixing incompatible string IDs.