TypeScript Coffee

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

Observability at Scale: Mastering ADK Callbacks for Cost, Latency, and Auditability [GDE]

AI orchestrators receive significant attention; however, when deployments become latent and costly,... 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

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 open-sourced salt-theme-gen

I open-sourced salt-theme-gen — a zero-dependency OKLCH theme generator for JS/TS Theming often... Read More

Run Away From Work — Stopped Using React for the Game Loop

Play the game here 👈 Hi there! I’m @nyaomaru, a frontend engineer who got Resident Evil 9 from... 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

I Built a Voice AI with Sub-500ms Latency. Here's the Echo Cancellation Problem Nobody Talks About

When I started building GoNoGo.team — a platform where AI agents interview founders by voice to... Read More

How We Ditched Backend Rendering and Went Full Client-Side with framewebworker

The Problem with Server-Side Video Rendering If you've ever built a video editing app, you... Read More

I built a GUI-powered Userscript manager to turn page interactions into userscripts!

I made Page Proxy, a Chrome and Firefox extension that converts page interactions into reusable code... Read More

The Type System: What You Know, What's New, and What's Weird

A backend developer's guide to TypeScript's type system: unions, literal types, discriminated unions, and why you won't miss class hierarchies. 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

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

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 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 replaced 4 Play Console tabs with one terminal command

I used to start every morning the same way. Open the Play Console. Check the releases tab. Switch to... 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

Functions, Generics, and the Stuff That Looks Familiar But Isn't

TypeScript functions and generics for backend devs. Same concepts from Java and C#, different rules. Arrow functions, type guards, satisfies, overloads, and generics that actually feel useful. Read More

Two Subtle Bugs That Broke Our Remotion Vercel Sandbox (And How We Fixed Them)

We use Remotion to render video clips server-side, and we pre-build a Vercel Sandbox snapshot at... Read More

fixing two bugs stacked on top of each other in ProseMirror

i'm building a markdown editor built on Milkdown (which wraps ProseMirror). i hit a bug in how marks... 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

Parsing Filter Expressions in NestJS with a Context-Free Grammar

Flat query param filtering breaks down fast. ?status=active&age_gte=18 works until someone needs... 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