How does this skill improve code quality?

It shifts potential runtime errors to compile-time errors by enforcing strict type checking through patterns like discriminated unions and assertion functions, leading to more stable production code.

When should I use discriminated unions?

Discriminated unions are best used when handling objects that can have multiple shapes (like API responses or state objects) based on a shared literal property, allowing for exhaustive pattern matching.

What are branded types in TypeScript?

Branded types allow you to distinguish between identical primitive types (like two different string IDs) to prevent logic errors at compile time by adding a unique 'brand' property.

Can I use this for runtime data validation?

Yes, the skill includes specialized patterns for user-defined type guards and assertion functions that safely narrow 'unknown' data types during execution to ensure runtime safety.

TypeScript Type Safety Patterns

Name: TypeScript Type Safety Patterns
Author: IvanTorresEdge

byIvanTorresEdge

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Desarrollo de API

Implements advanced TypeScript patterns like branded types and type guards to build bulletproof, self-documenting APIs.

This skill empowers developers to leverage the full power of the TypeScript type system, moving beyond basic interfaces to advanced patterns like generics, discriminated unions, and branded types. It provides a comprehensive framework for creating self-documenting code that catches errors at compile time, handles unknown data safely through type guards, and prevents domain-specific logic errors using branded types. Ideal for library authors and developers building complex, data-heavy applications where type integrity and runtime safety are paramount.

Características Principales

01Advanced Type Guard patterns for safe runtime data handling

02Branded Types implementation to prevent domain identifier collisions

03Discriminated Unions for robust state management and API responses

040 GitHub stars

05Template Literal and Mapped types for dynamic type generation

06Complex Generic constraints and custom utility type orchestration

Casos de Uso

01Safely parsing and validating untrusted data from external sources

02Designing high-integrity public APIs and shared libraries

03Building complex state machines with type-safe transitions

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add ivantorresedge/molcajete.ai type-safety-patterns

For use in Claude.ai and ChatGPT

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