Book: TypeScript in Production

Also by me: The TypeScript Library — the 5-book collection

My project: Hermes IDE | GitHub — an IDE for developers who ship with Claude Code and other AI coding tools

Me: xgabriel.com | GitHub

A typical TypeScript HTTP service has five layers, and most teams write the same type five times.

The column lives in the database. The ORM model mirrors it. A request DTO picks a subset. A validator checks the DTO. The handler returns a response shape that lines up with the row again. Each one is hand-typed, and each one drifts. The typo that costs you Friday afternoon is between userName in the validator and username in the SQL.

Drizzle, drizzle-zod, and Hono let you write that schema exactly once. The column type flows down the stack: row type, insert type, request validator, handler return, RPC client on the frontend.…