typescript-strict-guard

What problem does it solve?

Lax TypeScript usage can undermine type safety, leading to runtime errors that strict mode is designed to prevent, resulting in unpredictable application behavior. This Skill provides a comprehensive guide to enforcing TypeScript strict mode and best practices, ensuring robust and bug-free code.

Core Features & Use Cases

• Strict Mode Violation Identification: Highlights and provides clear fixes for common violations like any types, @ts-ignore comments, and non-null assertions, improving code reliability.
• Type Guard & Generic Patterns: Guides on creating robust type guards for runtime validation and using generics effectively for flexible, type-safe code.
• React & Async Typing: Provides specific patterns for correctly typing React components, hooks, and asynchronous operations, preventing common type-related issues in complex UIs.
• Use Case: When reviewing a pull request, activate this Skill. It will help you quickly identify and suggest fixes for common TypeScript strict mode violations like implicit any types or unnecessary non-null assertions, significantly improving code quality and preventing potential bugs.

Quick Start

I have a function that receives unknown input. Show me how to use a type guard to safely narrow its type.