Brett Codes

Hi, my name is Brett Chalupa. I'm a professional software developer and hobbyist game developer. I build web applications, APIs, CLIs, and libraries with TypeScript and Ruby.

I maintain:

• graphql-docs - a Ruby gem for easily generating a website of documentation for a GraphQL API
• usagi - a simple, fast 2D Lua game engine, powered by Rust and Raylib
• result - a TypeScript library for Rust-like Result pattern control flow

I make videos about programming, where I share what I'm learning and my thoughts on the craft.

I wrote thread books about programming, games, and making software:

• Make Games for Playdate with Lua
• Building Games with DragonRuby
• Projectbook

Recent Posts

• 10 Aug, 2026 I'm done using AI

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