# bun

Mitchell Hashimoto's point about Bun moving from Zig to Rust is not that Rust won and Zig lost. The more useful lesson is that programming languages are becoming more replaceable, and developer-tool companies need to manage technical narratives before the internet turns them into faction wars.

The author spent a week tearing apart Claude Code's 213MB binary and discovered it's essentially a massive prompt delivery system built on Bun, packed with unreleased features and telemetry.