IDEAS, DECISIONS & LESSONS

Journal

Notes on AI, architecture and building useful products.

4 articles

02 Oct 2026 · 4 min read

agentic coding

Claude Code Mods: I Wrote Middleware for an AI Agent and It Felt Like 2014 Express.js Again

Anthropic shipped a TypeScript hook API for Claude Code — prompt.submit, tool.call, turn.complete. I wired up a cost-tracking mod in twenty minutes and it broke in a way that taught me more than the docs did.

04 Aug 2026 · 8 min read

build-tools

TypeScript 7.0 and the Native Go Compiler: What 10x Build Speed Means for Your Team

TypeScript 7.0 ships a native Go compiler that delivers 8-12x build performance improvements. The benchmark numbers are real, but the deeper story is what this enables: faster CI/CD pipelines, more responsive local dev loops, and a changed calculation for monorepo architecture. Here's the engineering breakdown of what changed, what stays the same, and what your team should actually do.

23 Feb 2026 · 4 min read

angular

Typed Reactive Forms at Scale — Checkout, Validation, and Multi-Step Wizards

Post H — Angular 21 typed reactive forms in depth: FormGroup<T>, nonNullable, cross-field validators, async validators for slug uniqueness, and managing multi-step checkout flow with Signals.

15 Nov 2025 · 3 min read

How I Built an AI Code Review Bot That My Team Actually Uses

I built a GitHub Action that uses Claude to review PRs. The first version was annoying. The current version catches real bugs. Here's the whole journey.