function

What problem does it solve?

This Skill guides you in creating pure, reusable utility functions, drastically reducing code duplication and improving maintainability. It ensures your helper functions are predictable, testable, and type-safe, leading to more robust applications.

Core Features & Use Cases

• Pure Function Enforcement: Guides the creation of functions without side effects, ensuring predictable behavior.
• Single Responsibility Principle: Encourages functions to do one thing well, making them easier to understand and test.
• Type Safety with Generics: Promotes flexible yet safe functions using TypeScript generics.
• Use Case: Need to format dates, chunk arrays, or debounce API calls? This skill provides patterns and guidelines to create these utilities once, ensuring they are consistently applied and easily testable across your entire project.

Quick Start

Create a utility function to format a given date into "YYYY년 MM월 DD일" format, handling invalid date inputs gracefully.