/javascript

name: javascript-code
description: JavaScript/TypeScript development, paradigms, and runtime environments

JavaScript/TypeScript Code Skill

This skill manages JavaScript and TypeScript specific development practices across Node.js, browsers, and edge runtimes.

When to use this skill

• When writing or maintaining JS/TS applications.
• When dealing with asynchronous programming (Promises, async/await).
• When configuring module systems (ESM vs CommonJS).

Guidelines

• Prefer TypeScript over vanilla JavaScript for large projects to leverage static typing.
• Always use strict equality (`===`) and avoid loose equality (`==`).
• Avoid mutating state when possible; prefer functional approaches like `map`, `filter`, and `reduce`.
• Use `const` by default, `let` when necessary, and never use `var`.