Teach TypeScript 5.9+ type patterns including generics and mapped types.
npx skills add https://github.com/thejustinwalsh/three-flatland --skill types-thejustinwalsh
Please help me install this Agent Skill. Skill: types Source: https://github.com/thejustinwalsh/three-flatland/tree/main/.claude/skills/types Command: npx skills add https://github.com/thejustinwalsh/three-flatland --skill types-thejustinwalsh
This skill helps developers gain confidence building robust, typed applications in TypeScript 5.9+ by teaching patterns like generics, mapped types, conditional types, and the satisfies operator, plus React integration and modern tooling practices.
Install TypeScript 5.9+ and set up a small project to explore the patterns; use the references to learn advanced techniques; experiment by applying generics and mapped types to a sample API.
High-intent search queries and answers about installing and using this skill.
TypeScript generics and mapped types enable type-level programming to create flexible, reusable APIs. By applying these patterns, you enforce compile-time type safety, catch structural errors early, and ensure consumers receive accurate autocompletion and type inference.
The TypeScript satisfies operator validates that an expression matches a specific type without changing the inferred type. Use it to ensure an object literal conforms to a contract while preserving the narrowest possible types for property access.
Migrating React from JavaScript to TypeScript involves configuring tsconfig, renaming files to .tsx, and progressively typing components and props. This skill provides guidance on integrating TypeScript with React to build robust, type-safe applications.
Yes, this skill provides tooling and workflow guidance for Vite, pnpm, ESLint, and Vitest. It covers configuring these tools across real-world TypeScript applications to maintain consistent linting, package management, and testing standards.
You need a standard Node.js development environment with TypeScript 5.9+ installed. Setting up a small project allows you to explore advanced type patterns, such as conditional types and template literal types, alongside practical examples.
Template literal types build string-based types by concatenating literals, while conditional types select types based on a condition. Both enable advanced type-level programming to create strict type constraints and derive types dynamically from existing ones.
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