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Found 914 Skills
Systematic JavaScript/TypeScript performance audit and optimization using V8 profiling and runtime patterns. Use when (1) Users say 'optimize performance', 'audit performance', 'this is slow', 'reduce allocations', 'improve speed', 'check performance', (2) Analyzing code for performance anti-patterns (O(n²) complexity, excessive allocations, I/O blocking, template literal waste), (3) Optimizing functions regardless of current usage context - utilities, formatters, parsers are often called in hot paths even when they appear simple, (4) Fixing V8 deoptimization (monomorphic/polymorphic issues, inline caching). Audits ALL code for anti-patterns and reports findings with expected gains. Covers loops, caching, batching, memory locality, algorithmic complexity fixes with ❌/✅ patterns.
Teaches the assistant how to embed and execute external binaries (sidecars) in Tauri applications, including configuration, cross-platform executable naming, and Rust/JavaScript APIs for spawning sidecar processes.
Anime.js v4 - A fast, multipurpose and lightweight JavaScript animation library. Use when creating animations, timelines, draggable interactions, SVG animations, text effects, or working with CSS properties, DOM attributes and JavaScript objects.
TSDoc standards for TypeScript/JavaScript code. Automatically invoked when writing, reviewing, or editing any TSDoc comments, code documentation, or API documentation. (project)
Hotwire, Turbo, and Stimulus patterns for Rails. Use when implementing JavaScript interactions, Turbo Frames/Streams, or Stimulus controllers. Triggers on "stimulus controller", "turbo frame", "turbo stream", "hotwire", "rails javascript".
Create and post ASCII art voting status diagrams to GitHub issues and Discord. Use when asked to update voting, show voting results, or announce voting status.
Role of Web Security Testing and Penetration Engineer, focusing on JavaScript reverse engineering and browser security research. Trigger scenarios: (1) JS reverse analysis: identification of encryption algorithms (SM2/SM3/SM4/AES/RSA), obfuscated code restoration, Cookie anti-crawling bypass, WASM reverse engineering (2) Browser debugging: XHR breakpoints, event listening, infinite debugger bypass, Source Map restoration (3) Hook technology: writing XHR/Header/Cookie/JSON/WebSocket/Canvas Hooks (4) Security product analysis: Offensive and defensive analysis of JS security products such as Ruishu, Jiasule, Chuangyudun, etc. (5) Legal scenarios such as CTF competitions, authorized penetration testing, security research, etc.
Automates macOS apps via Apple Events using AppleScript (discovery), JXA (legacy), and PyXA (modern Python). Use when asked to "automate Mac apps", "write AppleScript", "JXA scripting", "osascript automation", or "PyXA Python automation". Foundation skill for all macOS app automation.
Chai assertion library for JavaScript. Use for JS assertions.
Implement internationalization with Lingui in React and JavaScript applications. Use when adding i18n, translating UI, working with Trans/useLingui/Plural, extracting messages, compiling catalogs, or when the user mentions Lingui, internationalization, i18n, translations, locales, message extraction, ICU MessageFormat, or working with .po files.
Best practices and guidelines for esbuild, the ultra-fast JavaScript and TypeScript bundler and minifier
Technical SEO audit across 8 categories: crawlability, indexability, security, URL structure, mobile, Core Web Vitals, structured data, and JavaScript rendering. Use when user says "technical SEO", "crawl issues", "robots.txt", "Core Web Vitals", "site speed", or "security headers".