How does it improve code maintainability?

By enforcing strict limits on cyclomatic complexity (max 10) and function length (max 60 lines), it forces the decomposition of 'god objects' into modular, testable components.

Can I use this with existing TypeScript projects?

Yes. Upon invocation, the skill reviews your existing tsconfig.json and ESLint configurations to identify gaps and provide an incremental path toward strict type safety.

What tools does this skill integrate with?

It is designed to work with mise for runtime management, husky for pre-commit hooks, vitest for testing, and the 'just-pro' skill for advanced task automation.

How does TypeScript Pro handle the 'any' type?

The skill enforces a non-negotiable zero-any policy. It replaces 'any' with 'unknown' and requires developers to use type narrowing or type guards to ensure runtime and compile-time safety.

TypeScript Pro

Name: TypeScript Pro
Author: rbergman

byrbergman

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Developer Tools

Enforce senior-level TypeScript standards with strict type safety, zero-any tolerance, and optimized project configurations.

TypeScript Pro transforms Claude into a senior-level TypeScript architect focused on production-grade code quality. It moves beyond basic syntax to implement advanced type system features like discriminated unions, branded types, and exhaustive checks while enforcing a strict zero-any policy. The skill proactively manages the entire development lifecycle—from runtime versioning with mise and task automation with just-pro to rigorous ESLint configurations that block unsafe assertions and maintain low cyclomatic complexity. It is ideal for developers who require high-integrity codebases where type errors are caught at compile time and architectural patterns like dependency injection and composition are standard.

Key Features

01Integrated quality assurance workflows for pre-commit verification and type-checking

02Strict type-safety enforcement with zero-any tolerance and no unsafe assertions

03Automated project bootstrapping with mise, husky, and standardized tsconfig templates

04Rigorous linting with hard caps on cyclomatic complexity and function length

05Advanced type system implementation including branded types and Result patterns

061 GitHub stars

Use Cases

01Migrating legacy JavaScript or loosely typed TypeScript to a strict, production-ready state

02Establishing a high-standard foundation for new full-stack TypeScript repositories

03Reviewing and optimizing complex type definitions to eliminate technical debt and runtime bugs

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add rbergman/dark-matter-marketplace typescript-pro

For use in Claude.ai and ChatGPT

Download Skill