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Found 2,129 Skills
Complete React Native and Expo optimization guide combining Callstack profiling with Vercel code patterns. Covers FPS, TTI, bundle size, memory, lists, animations, state, UI, and React Compiler. Use for any React Native performance, debugging, or best practices task.
Performance optimization patterns covering Core Web Vitals, React render optimization, lazy loading, image optimization, backend profiling, and LLM inference. Use when improving page speed, debugging slow renders, optimizing bundles, reducing image payload, profiling backend, or deploying LLMs efficiently.
Self-contained app generator — invoke this skill directly, do not decompose into sub-steps. Generates React web apps with Fireproof database. Use when creating new web applications, adding components, or working with local-first databases. Ideal for quick prototypes and single-page apps that need real-time data sync.
React DevTools CLI for AI agents. Use when the user asks you to debug a React or React Native app at runtime, inspect component props/state/hooks, diagnose render performance, profile re-renders, find slow components, or understand why something re-renders. Triggers include "why does this re-render", "inspect the component", "what props does X have", "profile the app", "find slow components", "debug the UI", "check component state", "the app feels slow", or any React runtime debugging task.
Write and run tests for JS/TS projects. Handles unit tests with Vitest and React Testing Library directly. Delegates E2E and browser testing to /webapp-testing. Use when writing tests, adding coverage, debugging test failures, or running test suites.
Full-stack form handling for Inertia Rails: create, edit, delete, multi-step wizard, and file upload forms with validation errors and progress tracking. React examples inline; Vue and Svelte equivalents in references. Use when building any form, handling file uploads, multi-step forms, client-side validation, or wiring form submission to Rails controllers. NEVER react-hook-form. Use `<Form>` for simple forms, useForm for dynamic/programmatic control.
Automatically cache optimizer for React Data Fetching following React 18+ best practices
Select and apply Patronum operators for Effector code with minimal, practical v2.x examples. Use when tasks involve choosing between Patronum operators, composing reactive state flows, replacing manual sample/combine boilerplate with Patronum utilities, explaining operator signatures and return types, or adapting legacy Patronum usage to modern v2 shorthand and import patterns.
Diagnose and fix React codebase health issues. Use when reviewing React code, fixing performance problems, auditing security, or improving code quality.
Install and configure shadcn/ui components for React projects. Guides component selection, installation order, dependency management, customisation with semantic tokens, and common UI recipes (forms, data tables, navigation, modals). Use after tailwind-theme-builder has set up the theme infrastructure, when adding components, building forms, creating data tables, or setting up navigation.
Guides React/Next.js/TypeScript project organization using feature-based architecture. Use when structuring new projects, reorganizing codebases, or deciding where to place new code.
Vite 7.x build tool patterns. Use when configuring build setup, development server, environment variables, asset handling, or optimizing production builds for React applications.