How does this skill improve code quality?

It enforces stricter compile-time checks by utilizing TypeScript's advanced logic, which reduces runtime errors and improves developer experience through better autocompletion.

Is it compatible with modern TypeScript versions?

The skill focuses on modern TypeScript features (4.x and 5.x), including advanced utility types, key remapping, and distributive conditional types.

Does it support template literal types?

Yes, it includes comprehensive guidance for string manipulation, path building, and pattern matching using template literal types.

Can I use this for existing JavaScript projects?

Yes, it provides specific strategies and patterns for migrating legacy JavaScript codebases into strongly-typed TypeScript architectures.

TypeScript Advanced Types

Name: TypeScript Advanced Types
Author: HermeticOrmus

byHermeticOrmus

0•

API Development

Enhances codebases with sophisticated TypeScript features like conditional types, generics, and template literals for maximum type safety.

This skill empowers Claude to architect highly resilient and type-safe TypeScript applications by leveraging advanced type system mechanics. It provides structured guidance on implementing complex generics, mapped types, and conditional logic, enabling the creation of reusable utility types, type-safe API clients, and robust validation systems. It is particularly useful for developers moving beyond basic interfaces to build enterprise-grade libraries or complex frontend/backend integrations where compile-time safety is paramount.

Key Features

01Utilizes template literal types for string-based pattern matching

02Crafts complex conditional types for sophisticated type inference

03Provides patterns for type-safe event emitters and API clients

04Generates mapped types for transforming existing data structures

050 GitHub stars

06Implements advanced generic constraints and multiple type parameters

Use Cases

01Architecting strongly-typed API clients with path and method validation

02Creating complex form validation systems with compile-time checks

03Building reusable, type-safe library or framework components

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add hermeticormus/after-the-third-cup typescript-advanced-types

For use in Claude.ai and ChatGPT

Download Skill