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"Don't use the array index as your key" is the most-repeated rule in React and the least-shown. Everyone quotes it; almost no demo lets you watch the
One of the biggest mistakes I see in AI projects isn't bad prompts. It's duplicated prompts. Every new feature gets its own prompt. Every agent cop
The Migration Gap: Why Your Tests Break Moving from a Vite-based Single Page Application (SPA) to Next.js is a significant architectural sh
Hey everyone 👋 I've been working on a little side project: a smart home simulation dashboard where you can control a lamp, fan, thermostat, door lock
Microsoft shipped TypeScript 7.0 as generally available on July 8, 2026, and if you've scrolled past the headline numbers without reading further, her
Most TypeScript tutorials teach you the basics. Nobody shows you the patterns that actually matter in a real Next.js production app. Here are the on
We are all using Copilot, Cursor, or ChatGPT to write code faster. They save time, tackle boilerplate, and help us think through complex logic. But th
Error handling has a quiet problem. You catch an error deep in a call stack, wrap it in something more descriptive, and rethrow. The caller gets a mea
Greetings from the island nation of Japan. Here in the land of the shinkansen, we take speed rather seriously: our bullet trains are so punctual that
The first real design decision I made for my invite-code board wasn't about the UI or the database — it was a refusal to let a single yen ever change
You want to merge a half-finished checkout redesign into main without breaking checkout for everyone. You want to ship a risky billing change but keep
The Architectural Shift: Client-Side vs. Server-Side For the past few years, Vite has been the gold standard for Single Page Application (S
✨ Build NestJS with a second pair of eyes NestJS is quick to start and surprisingly easy to make inconsistent. An AI assistant can generate a contro
Purupuru Maker is a lightweight browser tool for turning still images into soft, jelly-like wobble animations. The core idea is simple for the user: u
You write a function that works on numbers. Then you need the same function for strings. You copy-paste it and change the type annotation. Then arrays
SportsFlow is four apps: a web app, a native (Expo) app, a marketing site, and a docs site. I'm one person. The only way that's sustainable is to make
Retrieval systems usually rank documents by relevance. Production knowledge workflows need another question: Is this source still valid for the task?
Cross-posted from carrick.tools. Every developer has looked at a survey widget, the little "How was your experience? 😞 😐 😊" popover, and thought: I
Static pages are fast, but they go stale. Incremental Static Regeneration (ISR) solves this by regenerating pages in the background after a set time i
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