TypeScript Coffee

i built a social platform where everything vanishes after 24 hours

genjutsu is a fast-paced, developer-focused social network where everything vanishes every 24 hours.... Read More

Why Are We Still Doing GPU Work in JavaScript? (Live WebGPU Benchmark & Demo🚀)

JavaScript has been the main language of the web for years. Its popularity probably surprised even... Read More

OpenTelemetry just standardized LLM tracing. Here's what it actually looks like in code.

Every LLM tool invents its own tracing format. Langfuse has one. Helicone has one. Arize has one. If... Read More

I Let AI Rewrite 40% of My Codebase. Here’s What Actually Happened.

AI is no longer a novelty in development. It’s not a toy. It’s not magic. It’s not replacing... Read More

In the AI Agents Era, Why Waste Time Building a Framework?

Not about the result. About the zen of solving your own annoyances one weekend at a time Read More

I overpowered AI by inventing "Brilliant" code by AI opinion itself

As it always happens to me, I started from describing a simple API client, then I started playing... Read More

Your Dialog Has role='dialog'. That Doesn't Make It Accessible.

How I built a focus trap, click-outside hook, and roving tabindex from scratch — and what I learned about the gap between ARIA attributes and actual accessibility. Read More

Type-Safe CustomEvents: Better Messaging with Native APIs

The native EventTarget is a hidden gem for internal messaging. It is built-in, fast and stays out of... Read More

I Built a Claude Code Agent That Doesn't Need Me Anymore

I gave my AI agent persistent memory and identity. Four months later, it had a life I knew nothing about. Read More

I built an open-source alternative to Toast and Square for restaurant management

The Problem If you run a small restaurant, your options for online ordering and management... Read More

How I Built Aegis — A Credential Isolation Proxy for AI Agents

AI agents are getting really good at calling APIs. But the way we usually give them access — pasting... Read More

TanStack Is Eating React's Ecosystem — And Nobody Is Talking About It

Six months ago, I would have laughed at this title. TanStack? The React Query people? Eating an... Read More

I Over-Engineered My First Project: Bridging TypeScript and Zig with Bun! 🚀

Hello, hello! It's me Owen again! I've been inactive for awhile and thought maybe I should post... Read More

I built 10 free Claude Code tools in a weekend - here's what I learned

I've been using Claude Code daily for months. At some point I noticed I kept doing the same tedious... Read More

Breaking Free from the Render Cycle: Event-Driven Frontend Architecture

React encourages a very specific mental model: data flows top-down. Parents pass props to children,... Read More

I Built a “Run Away From Work” Browser Game with React and TypeScript

Click Game Button 👇 Hi there! I’m @nyaomaru, a frontend engineer who got a cold after getting... Read More

Stop Writing Step Functions by Hand

If you've worked with Step Functions at any real scale, you know the concept is great — orchestrate... Read More

I’m 13 and I built a Bun framework that’s 2x faster than Express 🚀

It’s a 97kB (2.4kB gzipped) Bun-native framework that hits 21,748 req/s. 👑 Why... Read More

notion-flows: Your Notion Pages Are Your Automation Code

I built a CLI tool that turns plain-English Notion pages into live business automations powered by Claude AI — edit the page, change the behavior. No deployments needed. Read More

Open Source Minecraft Server Tools: Why We Built ServerHub and What We Learned

I've been working on Minecraft ServerHub for several months — an open-source platform that monitors... Read More

Code Review for TypeScript React: What to Look For

I've reviewed over 1,000 React PRs. Early on, I nitpicked everything: indentation, variable names,... Read More

I Built a UK Business Intelligence MCP Server — Here's How

Last month I needed UK business data for a project I was building. Company records, Google ratings,... Read More

Building a SQL Tokenizer and Formatter From Scratch — Supporting 6 Dialects

Try it: devprix.dev/tools/sql-formatter This is part of DevPrix — 56 free developer tools that run... Read More

I Built a GitHub Action That Catches the 'Did You Mean to Leave That console.log?' Comment

You know that PR review comment. "Did you mean to leave this console.log?" Or worse: "This... Read More