How does this skill handle null checks?

It enforces explicit null checks (e.g., using value != null) instead of implicit truthiness to prevent common bugs associated with '0', empty strings, or booleans.

Can it help with ESLint errors?

Yes, it provides specific recommended rules and configurations for @typescript-eslint/strict-type-checked and other essential quality plugins to ensure code consistency.

Does it support React development?

Absolutely. It is automatically triggered by .tsx files and includes guidance on React-specific patterns like safe conditional rendering and prop typing.

What advanced TypeScript features are covered?

The skill covers discriminated unions, function overloads, constrained generics, and the mastery of utility types like Pick, Omit, and Record.

How do I trigger this skill in Claude Code?

The skill invokes automatically when you work with .ts, .tsx, .js, or .jsx files, or whenever Claude detects type errors, ESLint issues, or mentions of strict mode.

TypeScript Expert

Name: TypeScript Expert
Author: nguyenthienthanh

bynguyenthienthanh

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Developer Tools

Enforces strict type safety, ESLint best practices, and modern TypeScript patterns to eliminate runtime errors and improve code quality.

About

The TypeScript Expert skill transforms Claude into a senior-level TypeScript architect, providing specialized guidance on strict null handling, type guards, and advanced utility types. It proactively identifies common pitfalls like implicit truthiness and unhandled promises while recommending production-ready configurations for tsconfig.json and ESLint. This skill is essential for developers aiming to build robust, maintainable codebases using exhaustive error handling, discriminated unions, and modern asynchronous patterns.

Key Features

Strict null and truthiness validation logic
Advanced type guard and Zod schema implementation
1 GitHub stars
Exhaustive discriminated union pattern enforcement
Comprehensive error handling with custom typed classes
Automated ESLint and strict compiler configuration guidance

Use Cases

Refactoring legacy JavaScript projects into strict-mode TypeScript
Resolving complex type errors and ESLint warnings in React (TSX) applications
Implementing type-safe API consumers and robust data validation layers

About

Key Features

Strict null and truthiness validation logic
Advanced type guard and Zod schema implementation
1 GitHub stars
Exhaustive discriminated union pattern enforcement
Comprehensive error handling with custom typed classes
Automated ESLint and strict compiler configuration guidance

Use Cases

Refactoring legacy JavaScript projects into strict-mode TypeScript
Resolving complex type errors and ESLint warnings in React (TSX) applications
Implementing type-safe API consumers and robust data validation layers