TypeScript Coffee

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

EasyPollVote [Dev Log #2]

Welcome to the Second DEV LOG! Welcome to the second Dev Log of my full stack application... Read More

DotShare v3.0 — I Turned My VS Code Extension Into a Full Publishing Suite (Dev.to + Medium Inside)

A deep technical dive into DotShare v3.0 — the Publishing Suite update that added Dev.to... 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

I got tired of wiring the same caching stack every project, so I built LayerCache

Every Node.js service I've worked on hits the same caching wall. It always starts the same way. You... 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

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'm Rebuilding My Old Invoice App and This Time I Actually Know What I'm Doing

So I have this old project called Invoicepedia. Built it like 6 months ago when I was just starting... Read More

Writing a TypeScript Type Inference Engine in 300 Lines of Vanilla JS

Writing a TypeScript Type Inference Engine in 300 Lines of Vanilla JS A minimal... Read More

Building a Browser Game with React: What Doesn’t work well (Run Away From Work)

Hi! I'm @nyaomaru, a frontend engineer who finally managed to make it to the first zombie in... 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 CLI AI Coding Assistant from Scratch — Here's What I Learned

I Built a CLI AI Coding Assistant from Scratch — Here's What I Learned TL;DR: I spent... Read More

Claude Code Skills Have a Model Field. Here's Why You Should Be Using It.

I've been building Claude Code skills for a few weeks. Writing the prompts, testing them, tweaking... 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

Why I Built a New Vite Env Plugin

The four problems with plain Vite environment variables — and the plugin I wrote to fix them. This... Read More

Building an AI Invoice Generator in a Week (Week 8 of My NanoCrafts Build Curriculum)

Week 8 of my NanoCrafts build curriculum had one goal: ship a second SaaS product fast. After... Read More

Why I Built a 4,000-Line Agent Skill Instead of Another npm Package

A structured TypeScript + React + Next.js reference that AI coding agents actually read — debugging playbooks, decision flowcharts, and code review heuristics included. Read More

How We Ran Two Portals on the Same Domain During a React Migration (Without Users Noticing)

Imagine going live with your rewritten app and within an hour support tickets start flooding in. You... 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

npm audit --json Is Unreadable. I Wrote a Formatter With Zero Dependencies.

npm audit --json Is Unreadable. I Wrote a Formatter With Zero Dependencies. npm audit has... 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

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 MIME Type Lookup CLI in TypeScript — 800+ Types, Magic Bytes, and Zero Dependencies

Building a MIME Type Lookup CLI in TypeScript — 800+ Types, Magic Bytes, and Zero... Read More