type-patterns

What problem does it solve?

This skill helps developers replace throw-based error handling with a typed Result type and discriminated unions, enabling safer and more predictable control flow in TypeScript.

Core Features & Use Cases

• Type-Safe Result type and discriminated unions for error modeling.
• Exhaustive pattern matching with ts-pattern to guarantee all cases are handled.
• Patterns for immutable data handling and safer domain logic across APIs, validation, and data transformations.

Quick Start

Try implementing a function that returns a Result<number, AppError> instead of throwing, and demonstrate exhaustive handling with ts-pattern in the caller.