Writing
Thoughts and notes on frontend engineering, infrastructure, and AI tooling.
2026
tutorial2026-07-05
React 19 + Next.js 16: How Three Lint Errors Caused a Hydration Mismatch
From eslint errors to zero console errors — fixing client boundary instability in practice
tutorial2026-06-07
MDX Table of Contents: From rehype Extraction to Sticky Gutter Layout
rehype-extract-toc, Portal-fixed positioning, and scroll-until-prose-pin logic
tutorial2026-06-07
MDX Features Demo
GitHub Alerts, math, GFM extensions, and media embeds
tutorial2026-06-07
Page Transitions in Next.js App Router: What Failed and What Worked
Why AnimatePresence flickers, why template.tsx does nothing, and why pathname as key is the answer