typescript
Fix TS2349 and TS2531 in React Component State, Fast
TS2349 'not callable' and TS2531 'possibly null' in React state, reproduced under...
#react
react
Charting Home Energy Data With Recharts and TypeScript
Turn Home Assistant history into usable charts: time-series bucketing, downsampling that keeps...
react
MCP Apps in React: Render a Real UI Inside an AI Chat
MCP Apps let a tool return a sandboxed React UI instead of...
react
React Component Testing with Vitest 5: Setup and Pitfalls
A React 19 test setup on Vitest 5.0.2 and Testing Library 16,...
performance
Code-Splitting and Lazy Loading in React 19 That Help
React.lazy plus route-level splitting cuts real bundle size, but splitting every component...
react
Real-Time React Dashboard on the Home Assistant WebSocket
Build a live React dashboard on the Home Assistant WebSocket API: one...
typescript
Discriminated Unions in TypeScript: Modeling State
isLoading, isError, and data as three separate booleans let you represent impossible...
react
Suspense for Data Fetching: The 2026 Pattern Guide
Suspense for data fetching only works well with correct boundary placement. This...
tooling
How to Generate a Storybook With Claude Code and MCP
Storybook's MCP addon hands an agent your real component API. Here is...
tooling
Which Local Model Is Best for TypeScript and React?
SWE-bench measures Python bug-fixing. Here is what actually matters when picking a...
react
Six React Libraries Crossed a Major: What Actually Broke
Measured before-and-after bundle sizes and the real breaking changes for six React...
react
The use() Hook in React 19: Reading Promises and Context
React 19's use() reads promises and context inside conditionals and loops, breaking...
performance
Profiling React Renders With the DevTools Profiler
A hands-on workflow for using the React DevTools Profiler to find and...
react
React Server Actions: Mutations Without API Routes
React Server Actions let a form submit directly to server code, no...
typescript
TypeScript 7 React Migration Checklist for Vite Apps
An ordered TypeScript 7 React migration checklist for a single Vite app:...
performance
Core Web Vitals for React 19 Apps: A 2026 Field Guide
How to measure and fix LCP, INP, and CLS in a real...
react
Testing AI-Generated React Components: A 2026 Playbook
AI tools write React components fast but skip edge cases. These testing...
react
How to Refactor Large React Components With AI Tools
A practical workflow for breaking apart 500-line React components with AI tools,...
react
React Data Fetching with TypeScript & TanStack Query
Learn type-safe data fetching in React using TanStack Query v5. Compare fetch,...
typescript
TypeScript Validation with Zod and React Hook Form
Practical guide: validate React forms with Zod 4 and TypeScript. One schema...
react
Claude Code for React and TypeScript: Workflow Guide
Claude Code is a CLI, not an IDE plugin. For React/TypeScript projects,...
react
React Compiler: Practical Guide to Auto-Memoization
The React Compiler auto-inserts memoization at build time. How to install it,...
react
Zustand vs Jotai with TanStack Query Compared 2026
Zustand, Jotai, or TanStack Query for React state? Comparison of re-render behavior,...
typescript
TypeScript Utility Types: A Practical Developer Guide
Master TypeScript's built-in utility types: Partial, Required, Pick, Omit, Record, Exclude, and...
react
React Hooks Best Practices: Common Pitfalls to Avoid
React hooks best practices backed by render counts: which memo patterns skip...
react
React Server Components with TypeScript: Production Guide
React Server Components run on the server with zero bundle cost. Here's...
react
React Hook Form vs Formik in 2026: Library Showdown
React Hook Form wins on performance and bundle size vs Formik. Both...
react
React 19: Complete Guide to New Features and Migration
React 19 measured on 19.3.1: how Actions queue, why useOptimistic can show...
typescript
TypeScript Generics: Practical Guide for React Developers
Master TypeScript generics in React: typed hooks, generic components, API wrappers, and...