How does this skill handle the 'any' type?

The skill identifies 'any' types as forbidden patterns and provides safe alternatives, such as using specific interfaces, generics, or the 'unknown' type paired with type guards.

Does this skill help with runtime data validation?

Yes, it provides implementation patterns for Zod, allowing you to validate external data from APIs or user input at the boundaries of your application.

Will it suggest changes to my project configuration?

The skill includes a recommended list of strict compiler options for your tsconfig.json to ensure the TypeScript engine catches as many potential bugs as possible.

What is the benefit of using 'never' for exhaustive checks?

Using the 'never' type in switch or if-else blocks ensures that if you add a new member to a union type later, the compiler will alert you if you haven't handled that new case.

TypeScript Strict Expert

Name: TypeScript Strict Expert
Author: flosrn

byflosrn

0•

Developer Tools

Enforces robust type safety and strict TypeScript patterns to eliminate runtime errors and improve code maintainability.

This skill transforms Claude into a high-level TypeScript architect focused on maximum type safety and code quality. It provides specific implementation patterns for replacing unsafe 'any' types with 'unknown' and type guards, implementing runtime validation via Zod, and ensuring exhaustive checks using the 'never' type. By enforcing strict compiler settings and forbidding common escape hatches like @ts-ignore, it helps developers build predictable, production-grade applications that leverage the full power of the TypeScript compiler.

Key Features

01Enforces exhaustive checks in unions using the 'never' type

02Provides type guard patterns for safe 'unknown' narrowing

03Eliminates unsafe 'any' types and @ts-ignore escape hatches

04Optimizes tsconfig.json for maximum compiler-level protection

050 GitHub stars

06Implements runtime data validation using Zod schemas

Use Cases

01Building secure API integrations with validated runtime schemas

02Refactoring legacy codebases to eliminate type errors and unsafe assertions

03Standardizing team coding practices around strict TypeScript configurations

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add flosrn/.claude typescript-strict

For use in Claude.ai and ChatGPT