I’ve Given Up on Bun. I’m Removing It from SuperRails (opens in new tab)

Bun’s implementation language has been migrated from Zig to Rust. I have no intention of criticizing either Zig or Rust. I think both are excellent languages. What I want to criticize is Bun’s development process. Rewrite Bun in Rust #30412 Jarred-Sumner posted on May 08, 2026 Blog post with details coming soon. It passes Bun's pre-existing test suite on all platforms (and fixes several memory leaks and flaky tests), the binary size shrinks by 3 MB - 8 MB, the benchmarks are between neutral a...