Javascript Mastery

This is a solid reference implementation of the popular 33-js-concepts repo, covering everything from primitive types and type coercion to closures, the event loop, and functional programming patterns. You get concrete code examples for each concept, including the tricky stuff like hoisting, the this keyword, and how microtasks beat macrotasks in the event loop. It's structured as a teaching resource rather than an interactive tool, so think of it more like giving Claude a comprehensive JS cheat sheet to reference when explaining concepts or debugging. The examples are clear and show both correct patterns and common pitfalls. Useful if you're doing a lot of JS education, code review, or need Claude to explain why your equality comparison isn't working the way you expected.

Install to Claude Code

npx -y skills add sickn33/antigravity-awesome-skills --skill javascript-mastery --agent claude-code