Expo 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 read
Writing — page 2 of 5
What 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 readHardening Your JavaScript Stack Against the Next npm Supply Chain Worm
Shai-Hulud showed the pattern. Here's the concrete playbook for keeping a self-replicating worm out of your dependency tree.
6 min readCSS text-box-trim Finally Fixes Vertical Text Centering
Two small properties trim the invisible space your font adds above and below text, so buttons, tags, and badges align the way the padding math always promised.
5 min readShai-Hulud Broke npm's Trust Model. Here's the Replacement
A self-replicating worm hit 500+ packages by stealing publish tokens. npm's fix removes the tokens instead of trusting them harder.
6 min readYour MCP Servers Are Burning Your Agent's Context Window
Tool definitions load into context before an agent does anything. Code execution and progressive disclosure are how teams are getting that budget back.
5 min read