best▌

Comprehensive Vue.js testing guidance covering unit, component, and end-to-end testing strategies. \n \n Addresses 11 common testing challenges including async handling, composable testing, Pinia store setup, Suspense components, and Teleport queries \n Recommends Vitest for unit and component testing infrastructure, with Playwright as the preferred E2E framework \n Covers black-box component testing patterns to reduce brittleness during refactoring, async/await synchronization, and snapshot tes

45 performance optimization rules for React and Next.js, organized by impact and category. \n \n Covers 8 rule categories from eliminating waterfalls and bundle optimization (critical) through JavaScript performance and advanced patterns (low priority) \n Each rule includes explanation, before/after code examples, and context to guide automated refactoring and code generation \n Prioritized by impact: waterfalls and bundle size are critical; server-side performance and re-render optimization are

Comprehensive Vue.js testing guidance covering unit, component, and end-to-end testing strategies. \n \n Addresses 11 common testing challenges including async handling, composable testing, Pinia store setup, Suspense components, and Teleport queries \n Recommends Vitest for unit and component testing infrastructure, with Playwright as the preferred E2E framework \n Covers black-box component testing patterns to prevent brittle tests during refactoring, async/await patterns to eliminate race con

Comprehensive best practices and integration guides for Sanity CMS development across frameworks and topics. \n \n Covers 10+ framework integrations including Next.js, Nuxt, Astro, Remix, SvelteKit, and Angular with framework-specific patterns and setup guidance \n Includes topic guides for schema design, GROQ query optimization, Visual Editing, Portable Text, images, TypeGen, localization, and content migrations \n Provides quick-reference structure for loading only relevant guides based on tas

45 performance rules for React and Next.js, organized by impact from waterfalls and bundle optimization down to advanced patterns. \n \n Covers 8 rule categories prioritized by impact: eliminating waterfalls (Promise.all, Suspense), bundle size (direct imports, dynamic loading), server-side caching, client-side deduplication, re-render optimization, rendering performance, JavaScript efficiency, and advanced patterns \n Each rule includes explanation, incorrect and correct code examples, and cont

Web search API for LLMs with real-time data access, content extraction, site crawling, and AI-powered research. \n \n Five core methods: search() for web results, extract() for URL content, crawl() for site-wide extraction, map() for URL discovery, and research() for end-to-end AI synthesis \n Supports Python and JavaScript SDKs with async clients for parallel queries and configurable search depth (ultra-fast/fast/basic/advanced) \n Crawl method accepts semantic instructions to focus extraction

Apply these security principles when developing backend services, microservices, and any code handling sensitive data or external inputs.

Comprehensive performance optimization guide for React and Next.js applications, maintained by Vercel. Contains 69 rules across 8 categories, prioritized by impact to guide automated refactoring and code generation.

Guidelines for building scalable, secure, and performant applications on Harper. These practices cover everything from initial schema design to advanced deployment strategies.

Expert guidelines for Matplotlib development, focusing on data visualization, plotting, and creating publication-quality figures.