Tag: react

How to build type-safe forms in React using react-hook-form with Zod schema validation, including nested fields, async validation, and dynamic fields.

How and when to use React's useMemo and useCallback hooks for performance optimization, and when they add unnecessary overhead.

How to render large lists efficiently in React using react-window for DOM virtualization, including fixed and variable height rows and grid layouts.

Improve single-page application load times by splitting bundles at route and component level, implementing lazy loading with React.lazy and live imports

How to use Vitest snapshot testing to catch unintended UI changes in React components, including inline snapshots and snapshot updating workflows.

How to use Jest snapshot testing to catch unintended UI regressions in React components and prevent visual bugs from reaching production

Use the Composite pattern to compose objects into tree structures, letting clients treat individual objects and compositions uniformly in UI component hierarchies

How to separate data-fetching logic from rendering in React using the container-presenter pattern. Covers hooks migration, testing benefits, and trade-offs.

How to compose reusable logic with custom React hooks. Covers hook composition patterns, dependency arrays, context integration, and testing strategies.

How to update UI immediately and reconcile on server response in React. Covers rollback on error, conflict resolution, and React Query integration.

How to model UI state transitions with finite state machines in React. Covers XState, statecharts, guarded transitions, and preventing impossible states.

How to use React Suspense boundaries for declarative loading states. Covers data fetching, streaming SSR, nested boundaries, and error boundaries.

Build production AI agents. Covers agent architectures, tool use, planning, memory, multi-agent systems, ReAct patterns, function calling, human-in-the-loop, safety, and deployment patterns for reliable autonomous agents.

Master React 19 features. Covers server components, use() hook, actions, form actions, useActionState, useOptimistic, useFormStatus, ref as prop, document metadata, asset loading, and React Compiler with practical code examples.

Optimize React apps for speed. Covers memoization, virtualization, code splitting, bundle analysis, React Profiler, concurrent features, and Core Web Vitals.

Master React Server Components: RSC architecture, data loading, streaming, server actions, and client component boundaries in Next.js App Router.

Master React state management: Context API, Zustand, Jotai, and TanStack Query for server state. Covers patterns, persistence, optimistic updates, and when to use each.

Master Vitest for React testing: component tests with Testing Library, hook tests with renderHook, integration tests, mocking, snapshot testing, and parallel execution.