typescript

Guide advanced TypeScript programming with generics, mapped types, and type guards.

Updated Feb 17, 2026
One-click install
npx skills add https://github.com/Objective-Arts/lens-dist --skill typescript-objective-arts
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: typescript
Source: https://github.com/Objective-Arts/lens-dist/tree/main/canon/typescript
Command: npx skills add https://github.com/Objective-Arts/lens-dist --skill typescript-objective-arts

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps developers write more robust, maintainable, and type-safe TypeScript code by leveraging advanced language features and best practices.

Core Features & Use Cases

  • Type Inference: Write less code by letting TypeScript infer types.
  • Generic Programming: Build flexible and reusable code components.
  • Mapped & Conditional Types: Perform complex type transformations and logic.
  • Discriminated Unions: Model state and ensure exhaustive handling.
  • Type Guards & Overloads: Implement safe runtime checks and complex function signatures.
  • Use Case: Refactor a legacy JavaScript codebase to TypeScript, ensuring type safety and catching potential errors at compile time, leading to fewer runtime bugs and improved developer productivity.

Quick Start

Apply the typescript skill to refactor the provided JavaScript code snippet into idiomatic TypeScript, leveraging type inference and avoiding explicit type annotations where possible.

Frequently Asked Questions about typescript

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I use TypeScript generics to build reusable and flexible code components?

TypeScript generics allow you to build reusable code components by defining type variables that preserve type safety. This Skill provides examples for implementing generic programming patterns to create flexible functions and classes without sacrificing compile-time type checking.

What's the best way to model application state using discriminated unions in TypeScript?

Modeling application state with discriminated unions in TypeScript ensures exhaustive type handling and runtime safety. This Skill demonstrates how to leverage discriminated unions to manage state transitions robustly and catch unhandled cases during compilation.

How do I refactor legacy JavaScript code to idiomatic TypeScript with type inference?

Refactoring legacy JavaScript to idiomatic TypeScript involves leveraging type inference to write less code while ensuring type safety. This Skill guides you through avoiding explicit type annotations where possible, catching runtime errors at compile time, and improving maintainability.

When do I need TypeScript conditional types and mapped types for complex type transformations?

You need TypeScript conditional types and mapped types when performing complex type transformations and logic on existing types. This Skill covers how to dynamically generate and modify type structures to enforce strict type safety across dynamic data models.

How do I implement type guards and function overloads for safe runtime checks in TypeScript?

Implementing type guards and function overloads in TypeScript enables safe runtime checks and complex function signatures. This Skill provides guidance on narrowing types dynamically and defining multiple function signatures to handle diverse input types securely.

Can I use advanced TypeScript programming patterns to catch potential errors at compile time?

Yes, advanced TypeScript programming patterns help catch potential errors at compile time by leveraging type inference, generics, and type guards. This Skill focuses on writing type-safe code to reduce runtime bugs and improve overall developer productivity.