TypeScript Coffee

Meet Necoz! 😸 Small. Simple. Useful.

Hoi hoi! 👋 I'm @nyaomaru, a frontend engineer who loves TypeScript and cats! 😸 Today, I have some... Read More

is-kit Reached 100 Stars ⭐🎉 Here’s What Changed Since 50

Hoi hoi! YAY! is-kit just reached 100 GitHub stars⭐ 🎉🎉🎉 When it reached 50 stars, I wrote about how... Read More

I Compared 6 TypeScript Validation Libraries. Here's What Surprised Me 🤔

Hoi hoi! 👋   I'm nyaomaru, a frontend engineer and OSS developer working mostly with... Read More

Trick or Type Guard? Surviving `unknown` with is-kit 🎃

Hoi hoi! 👋 I'm @nyaomaru, a frontend engineer who is scared of horror things 🙀 Happy Halloween!... Read More

How Do You Validate `unknown` in TypeScript Without a Schema Library? 🛡️

Hoi hoi! 👋 I'm @nyaomaru, a frontend engineer who is obsessed with gamba. 😸🦐 Recently, I was... Read More

Zone.js Hijacked Your Browser for 8 Years. Here's What Replaced It.

A visual deep dive into how Angular tore out global browser monkey-patching and rebuilt its reactivity engine from scratch using Signals and Zoneless change detection. Read More

After 5 years, Wasp 1.0 is coming: a 6-month plan for our full-stack JS framework

The time has come: Wasp 1.0 is now officially in the works! ETA: ~6 months. Even though still... Read More

Stop Generating Changelogs from Git Commits: How I Fixed the 'WHY' Problem in ChangelogBot

Why conventional commit changelogs fail developers, how ChangelogBot extracts business context with AI, and how I fixed secondary rate limits and silent degradation in CI. Read More

How I finally understood the Liskov Substitution Principle

The Intro Halfway through SOLID! We are at the L, the one with the scary name: the Liskov... Read More

We Built Opsville, a Free Pixel-Art Town Where You Fix DevOps Incidents

Opsville is a small pixel-art town where every district is broken, and you are the one on call. 🏘️... Read More

I grepped for @ts-ignore and found zero. Then I grepped for the cast nobody bans

Every TypeScript team has a rule about @ts-ignore. Ours does too, and it works: zero occurrences... Read More

My OSS Projects: dets

This is part of my series "My Open-Source Projects", where I walk through the projects I started or... Read More

I Built a Tiny Cat That Breathes With You, Using Just a Webcam 🐈

This is a submission for the Presage SmartSpectra SDK Challenge. What I Built What if... Read More

"we should go out this weekend": I built a Discord member that holds the clock until we're outside

This is a submission for the Hacktoberfest Open-Source AI Challenge Week 1: Touch Grass TL;DR.... Read More

How I finally understood the Dependency Inversion Principle

The Intro Last stop. We made it to the D: the Dependency Inversion Principle. This one is... Read More

How to make Vue Dynamic Components more stable

Hey Folks, it's me again! Today, I would like to share with you how I recently made the Vue Dynamic... Read More

Claude Code mods: Brickfall, a brick breaker that's loud without getting in the way

After the Minesweeper and Doom, the third game in the arcade is a brick breaker after Arkanoid. The... Read More

Clean Architecture in Angular: Is It Worth the Complexity?

A practical exploration of architectural boundaries, dependency inversion, and the hidden cost of... Read More

Translation Is Not Agreement: Build a Clarification Handshake for Multilingual Chat

Machine translation can make a group message readable without making its intent certain. Build a reproducible TypeScript clarification workflow for Tencent RTC Social Messaging with author-only answers, revision checks, explicit notification failures, and verification tests. Read More

How I finally understood the Interface Segregation Principle

The Intro Letter four of five. Last post we broke a fat PaymentMethod into PaymentMethod +... Read More

Three agents and one memory: a proposal pipeline for a small agency

Josefina Tersoli, October 2026. The code is at github.com/JTersoli/bigpickle-brain, MIT. Every... Read More

Integration testing with PostgreSQL, Drizzle and Vitest

For a new TypeScript project I recently had to come up with a concept for integration testing. It was... Read More

How I finally understood the Single Responsibility Principle

The Intro Welcome to the first stop of a five-part road trip through SOLID. Five letters,... Read More

How I finally undestood what loosely coupled modules are

Photo by Glen Carrie on Unsplash The Intro Here goes another one of those "it... Read More