TypeScript Coffee

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

EasyPollVote [Dev Log #4]

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

I built a 200 line AI router in TypeScript. My monthly bill dropped 41%.

I track my own AI spend across three projects. In March, the line item that grew fastest was not... Read More

EasyPollVote [Dev Log #3]

Welcome to the Third DEV LOG! Welcome to the third Dev Log of my full stack application... 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

Function Calling Harness 2: CoT Compliance from 9.91% to 100%

TL;DR 9.91% is not "did the model get it right on the first try" — it's "did the model walk... 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 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

Building a Universal Drafts System in a VS Code Extension — Part 1: Types & Storage

How I designed the Draft type, DraftsService, and the save/upsert flow that powers DotShare... 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

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

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

SvelteKit Port: 32.50 kB Gzip, +72% Over Plain Svelte — Meta-Framework Tax, Round Two

SvelteKit Port: 32.50 kB Gzip, +72% Over Plain Svelte — Meta-Framework Tax, Round... Read More

I got tired of messy TypeScript migrations in Node.js, so I built fast-ts-integrator

Adding TypeScript to an existing Node.js project sounds simple until it isn’t. A few files in,... Read More

Kimi K2.6 vs. Claude Opus 4.7 in a Weird Game Coding Test ✅

Kimi K2.6 has been getting a lot of love lately, especially from devs who want a strong coding model... Read More

5 TypeScript Defaults That Quietly Changed in 2026 (And Why Your Build Is Now Broken)

TypeScript 6.0 flipped five tsconfig defaults. Each one is a tiny PR that bricks somebody's CI. Here is what changed, what it breaks, and the one-line fix. Read More

From NASA Exoplanet Query to ExoVault: Building a Better Data Exploration Experience

Other project idea I recently decided to build in public was inspired by the NASA Exoplanet Query... Read More

How I Built a Whiteboard App with 3 Dependencies

The Problem Every whiteboard app I tried wanted me to sign up, sync to the cloud, or load... Read More

I cut 40% of my NgRx Signal Store boilerplate — here's the 5 utilities I extracted

Every Signal Store in our monorepo started the same way. Fifty-plus lines of ceremony before a single... Read More

I replaced 6 @Injectable() gRPC interceptors with composable factories

Our Angular monorepo talks to a gRPC backend. Every service call passes through six interceptors:... Read More

Make Your Hono Authorization Server Work on Any Host

How to remove the hardcoded ISSUER constant from your Hono OIDC server so it works correctly on localhost, staging, and production without any code changes. Read More

AI Deleted My Tests and Said 'All Tests Pass' — A Horror Story from Porting 'typia' from TypeScript to Go

TL;DR The job. Take typia's existing TS files, translate the contents line by line into... Read More