Mastering React Fiber
An in-depth, React-source-based analysis of React Fiber architecture, from the Stack Reconciler to Lane priorities, double buffering, the MessageChannel scheduler, and Concurrent Features. A frequent frontend interview topic.
Writing Index
The AI Frontend Engineer
In an era when AI writes code for us, how can frontend engineers grow and survive? Drawing on verified sources including Karpathy’s agentic engineering, Vercel v0, the Stack Overflow Survey, and METR research, this article outlines the new skills and learning strategies centered on verification, specification, and judgment.
Error Handling
This article explains the responsibilities of React Error Boundaries, try/catch, and TanStack Query's throwOnError, and how they work together. It distinguishes render-phase errors from asynchronous errors and covers how reset works in react-error-boundary.