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DOOM.ts | Dimitri Mitropoulos | Ep 13

This week on the pod, we talk to Dimitri Mitropoulos about building DOOM in the TypeScript type system. We walk through all the nitty gritty and explore this truly amazing engineering feat! We touch on things that Dimitri learned and discovered along the way, and how you might be surprised what you can accomplish by trying! In the news, Zod 4 Beta drops with awesome new features.

Chapters

(00:00) - Intro

(00:37) - SquiggleConf 2025

(01:00) - Personal News

(04:28) - Dimitri's Background and Michigan TypeScript

(08:35) - JSON Parser in TypeScript Types

(09:08) - Where do you start with DOOM in…

The skinny

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