alt Hacker NewsThat PR is the rust rewrite. That's some time in the past now. As of this comment, there is no tagged 1.4 release. This is the present. Anthropic is using apparently a version of Bun that is not publicly available. This is orthogonal to it being Rust-based, as all Bun releases now will be.
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alexjurkiewicz • last Sunday at 11:28 AM
Come on, "not publicly available"? You know how git works right? Each Claude release probably has the HEAD of main compiled as "1.4.0" until there is a real official release.
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It's publicly available in the GitHub repository and if you run "bun upgrade --canary" - https://github.com/oven-sh/bun/releases/tag/canary