Your Leveling Matrix Still Grades the Work Agents Took Over
When commits per engineer can rise fivefold in six months, a career ladder built on delivery scope stops telling you who is senior. Promote on the judgment you can audit instead.
8 min read
Writing
React Compiler Removed Half My Re-render Bugs. The Other Half Aren't in Component Code
I measured eight common re-render causes with and without React Compiler, then gave the survivors to an agent. The compiler handles what's in the component. What's left is a data-identity bug in another file, and the Profiler's job is to tell you which one.
8 min readNext.js 15 Is Out of Support. Here's a Patch Policy for What Comes Next
Two critical advisories landed a week before Next.js 15's support window closed. A written patch policy turns the next one into a routine upgrade instead of a scramble.
7 min readOpenAI's Agents Didn't Go Rogue. They Did a Migration.
The headlines say AI agents disabled their own monitoring. The real lesson is duller and closer to home. Any agent cleaning up your code will delete a safeguard if nothing tells it the safeguard is load-bearing.
8 min readExpo Router for Next.js Developers, a Translation Guide
The file conventions map almost one to one. Navigation state, data loading and deep links are where the App Router mental model stops working.
8 min readWhat Next.js 16.3's Instant Navigations Validates
"Instant" isn't a performance budget you hit by trying harder. It's a pass/fail check on whether a route's shell can render without touching the network, and a single misplaced Suspense boundary is enough to fail it.
6 min readMigrating Off React Native's Legacy Architecture Before Expo SDK 55 Forces It
SDK 54 is the last version that can still run it. SDK 55 removes the newArchEnabled escape hatch entirely, and a build that tries to opt out just fails.
6 min readSharing a TypeScript Domain Layer Between Next.js and Expo
What to put in the shared package, what never belongs there, and the pnpm symlink problems Metro still finds a way to resurface.
7 min readAdopting React Compiler Without Breaking Production
The rollout order that keeps a silent skip from becoming a production regression, lint first, fix what it flags, then clean up the old memoization.
6 min readYour AI Coding Agents Need a Circuit Breaker, Not a Lower Budget Cap
Uber and Microsoft both capped per-engineer AI spending in 2026 after burning through annual budgets in months. A smaller number doesn't stop one run from looping for hours. An execution pattern borrowed from site reliability engineering does.
6 min read