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Found 862 Skills
Apply opinionated rules and security patterns to JavaScript and TypeScript code that uses the xrpl.js client library to interact with the XRP Ledger. Use when users want to write a new XRPL integration with xrpl.js, review or refactor existing xrpl.js code, sign or submit a transaction, construct or credit a payment, work with issued currencies, AMM, NFToken, escrow, or payment channels, query account or ledger state, or audit an XRPL integration for security issues like partial-payment inflation, missing LastLedgerSequence, missing DestinationTag, or unsafe key management.
Comprehensive TypeScript/JavaScript coding standards focusing on type safety, defensive programming, and code correctness. Use when (1) Writing or reviewing TS/JS code, (2) Fixing type errors or avoiding any/enum/null, (3) Implementing control flow, state management, or error handling, (4) Applying zero-value pattern or immutability, (5) Code review for TypeScript anti-patterns. Covers naming conventions, function design, return values, bounded iteration, input validation. For performance optimization, use accelint-ts-performance skill. For documentation, use accelint-ts-documentation skill.
Write and review API documentation comments using TSDoc and JSDoc best practices. Use when the user asks for docs, doc comments, TSDoc, JSDoc, @param/@returns help, or documentation quality improvements in JavaScript or TypeScript code.
Prototype pollution testing for JavaScript stacks. Use when user input is merged into objects (query parsers, JSON bodies, deep assign), when configuring libraries via untrusted keys, or when hunting RCE gadgets via polluted Object.prototype in Node or the browser.
Work with any Upstash TypeScript/JavaScript SDK including Redis, Box, QStash, Workflow, Vector, Search and Ratelimit. Use when the user is working with any Upstash product or SDK.
Modern native JavaScript (ES2022-ES2025) utility patterns that replace lodash
PostHog feature flags for Web (JavaScript) applications
Utilities to generate JavaScript and TypeScript code programmatically. Use when building code generators, AST-to-code output, or dynamic source generation.
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".
Native SwiftUI WebKit integration with the new WebView struct and WebPage observable class. Covers WebView creation from URLs, WebPage for navigation control and state management, JavaScript execution (callJavaScript with arguments and content worlds), custom URL scheme handlers, navigation management (load, reload, back/forward), navigation decisions, text search (findNavigator), content capture (snapshots, PDF generation, web archives), and configuration (data stores, user agents, JS permissions). Use when embedding web content in SwiftUI apps instead of the old WKWebView + UIViewRepresentable/NSViewRepresentable bridge pattern. This is a brand new API — do NOT use the old WKWebView wrapping approach.
Browser automation using Playwright MCP for web testing, UI verification, and form automation. Use when navigating websites, clicking elements, filling forms, taking screenshots, or testing web applications. Supports iframe operations and complex JavaScript execution.
Run ESLint with security plugins on JavaScript/TypeScript code. Detects eval usage, non-literal RegExp, prototype pollution, and other JS/TS security anti-patterns.