Use when building JavaScript applications with modern ES2023+ features, async patterns, or Node.js development. Invoke for vanilla JavaScript, browser APIs, performance optimization, module systems. Keywords: JavaScript, ES2023, async, Node.js, Fetch API, Web Workers.
Install
npx skills add Jeffallan/claude-skills --skill javascript-pronpx skills add Jeffallan/claude-skills --skill javascript-pro -a claude-code -gnpx skills add Jeffallan/claude-skills --skill javascript-pro -a codex -ggemini skills install https://github.com/Jeffallan/claude-skills.git --path skills/javascript-progh skill install Jeffallan/claude-skills javascript-progit clone --depth 1 https://github.com/Jeffallan/claude-skills /tmp/Jeffallan__claude-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/Jeffallan__claude-skills/skills/javascript-pro ~/.claude/skills/javascript-pro # Claude Code
cp -R /tmp/Jeffallan__claude-skills/skills/javascript-pro ~/.agents/skills/javascript-pro # Codex, Cursor, Gemini CLI, Copilot, OpenCode