Frontend Frameworks Agent Skills

Migrate Enzyme tests to React Testing Library for React 18 upgrades with a complete API mapping and behavior-testing philosophy.

Migrates React legacy context API (contextTypes, childContextTypes, getChildContext) to the modern createContext API across all provider and consumer files.

Reference for every source-file migration required for React 19, including API changes, ref handling, and context updates.

Diagnose and fix automatic batching regressions in React 18 class components with a decision tree for setState behavior changes.

Check minimum dependency versions for React 18.3.1 and React 19 compatibility, resolve peer dependency conflicts, and decide on upgrade strategies.

Preserve React 18 concurrent patterns and adopt React 19 APIs (useTransition, useDeferredValue, Suspense, use(), useOptimistic, Actions) during migration.

Build scroll animations, parallax effects, pinned sections, and scroll-triggered reveals using GSAP ScrollTrigger or Framer Motion in vanilla JS, React, or Next.js.

Animate React and Next.js components with GSAP using the useGSAP hook, refs, and context-safe patterns for automatic cleanup and SSR compatibility.

Provides React composition patterns to avoid boolean prop proliferation, build flexible component libraries, and design reusable APIs, including React 19 changes.

Optimize React and Next.js applications with 70 performance rules across 8 categories, prioritized by impact for automated refactoring and code generation.

Builds production-ready frontend pages with premium UI design, cinematic animations, AI-generated media assets, persuasive copywriting, and generative art.

Provides full-stack development practices covering backend architecture, frontend-backend integration, and production hardening with structured workflows and checklists.

Build production-ready React Native and Expo apps with guidance on components, styling, animations, navigation, state management, forms, networking, performance, testing, and deployment.

Build onchain applications with React components and TypeScript utilities from Coinbase's OnchainKit, supporting wallet connection, token swaps, NFT minting, and payment processing.

Enforce consistent frontend UX patterns for Ethereum dApps: onchain buttons, four-state connect flows, token approval sequences, address display, USD values, and RPC configuration.

Provides a complete build-to-production pipeline for Ethereum dApps, covering fork mode setup, IPFS deployment, Vercel config, ENS subdomain setup, and a production checklist for Scaffold-ETH 2.

Builds elaborate, multi-component HTML artifacts for claude.ai using React, Tailwind CSS, and shadcn/ui, with scripts to initialize and bundle projects into single self-contained HTML files.

Build SwiftUI views and components with best practices, navigation patterns, state management, and reusable component references.

Create award-winning, immersive web experiences with dramatic typography, purposeful motion, scroll-based composition, and performance-optimized animation.

Builds Vue 3 components with Composition API patterns, configures Nuxt 3 SSR/SSG projects, sets up Pinia stores, scaffolds Quasar/Capacitor mobile apps, implements PWA features, and optimises Vite builds.

Builds React 18+ components, implements custom hooks, debugs rendering issues, migrates class components to functional, and manages state with Context, Redux, or Zustand. Covers React 19 Server Components, Suspense boundaries, useActionState forms, and performance optimization.

Builds Vue 3 components, composables, and Vite projects using JavaScript with JSDoc type annotations instead of TypeScript.

Develops custom WordPress themes and plugins, creates Gutenberg blocks, configures WooCommerce stores, implements REST API endpoints, and applies security hardening with nonces, sanitization, escaping, and capability checks.

Builds and debugs Shopify themes, develops custom Shopify apps, and implements Storefront API integrations for headless storefronts.

Build Next.js 14+ applications with App Router, server components, server actions, and optimized deployment.

Builds, optimizes, and debugs cross-platform mobile applications with React Native and Expo, covering navigation, native modules, list performance, and platform-specific code.

Build chat interfaces in React/Next.js with reusable components for messages, input, typing indicators, and avatars.

Add a batteries-included agent component to React/Next.js apps with runtime, streaming, human-in-the-loop approvals, and client-side tools.

Provides React/Next.js UI components for displaying tool call lifecycle states including pending, running, approval, success, and error, with support for human-in-the-loop approval flows.

Build, edit, and deploy full-stack websites or web apps using the Higgsfield CLI, with two distinct product types: standalone websites or Higgsfield-integrated apps.

Scaffolds a new Convex project or adds Convex to an existing app, including template selection, provider wiring, and dev loop setup.

Load 3D models, textures, and HDR environments in Three.js with GLTF, OBJ, FBX, STL, PLY, and Draco/KTX2 compression support.

Handle user input in Three.js scenes with raycasting, mouse/touch interaction, and camera controls including Orbit, Fly, FirstPerson, PointerLock, Trackball, and Map controls.

Set up 3D scenes with Three.js, including scene, camera, renderer, Object3D hierarchy, coordinate systems, and math utilities.

Generates premium React/Next.js frontend code with deterministic typography, calibrated color palettes, and motion physics, enforcing anti-cliché design rules and performance guardrails.

Provides practical patterns for using fp-ts with React, including hooks, state management, form validation, and data fetching.