I fully AI-driven rewrite of a massive codebase from one language to another within a reasonable release-cycle has never been done before.

There was a lot of sentiment around the lines of:

- Bun is done for, it's all slop now

- there's no way a fully AI-written codebase can work

- Jarred is an idiot for trusting AI to rewrite the whole thing

- they're never going to release this, there's going to be a billion of bugs

This release proved all of this wrong. It also serves as a great advertisement of how capable Anthropic models and harness are to enable this.