Apparently Claude Code being built on Bun was considered a good enough reason? But it looks more strategic for Bun since they’re VC-backed and get a good exit:
> Claude Code ships as a Bun executable to millions of users. If Bun breaks, Claude Code breaks. Anthropic has direct incentive to keep Bun excellent.
…
> Bun's single-file executables turned out to be perfect for distributing CLI tools. You can compile any JavaScript project into a self-contained binary—runs anywhere, even if the user doesn't have Bun or Node installed. Works with native addons. Fast startup. Easy to distribute.
> Claude Code, FactoryAI, OpenCode, and others are all built with Bun.
…
> Over the last several months, the GitHub username with the most merged PRs in Bun's repo is now a Claude Code bot. We have it set up in our internal Discord and we mostly use it to help fix bugs. It opens PRs with tests that fail in the earlier system-installed version of Bun before the fix and pass in the fixed debug build of Bun. It responds to review comments. It does the whole thing.
> This feels approximately a few months ahead of where things are going. Certainly not years.
…
> We've been prioritizing issues from the Claude Code team for several months now. I have so many ideas all the time and it's really fun. Many of these ideas also help other AI coding products.
…
> Instead of putting our users & community through "Bun, the VC-backed startups tries to figure out monetization" – thanks to Anthropic, we can skip that chapter entirely and focus on building the best JavaScript tooling.
Same thought and I can't wait for a video with a very confused Theo...
I mean, it's likely very important for them to have a fast and sandboxed code executor available. But it's not like Bun would fight against improvements there or refuse paid work on specific areas, right?
I hope they have a clause regarding what to do if Anthropic and Bun should part. Looking for sponsor is one thing, bet direction and velocity might not align in future. Which is what I'm most afraid of tbh.
Neither of them is aiming to unseat Node.js from existing deployments. Bun has made inroads by being the foundation of Claude Code, Opencode, Midjourney. At my previous workplace, we replaced Yarn Classic with Bun for package management and replaced Bash scripts with Bun shell for setup and CI scripts.
Bun's announcement has more juice on HN so far: https://news.ycombinator.com/item?id=46124267
Sure Bun has its benefits, but I don't see the strategic reasons why Anthropic is doing this
Apparently Claude Code being built on Bun was considered a good enough reason? But it looks more strategic for Bun since they’re VC-backed and get a good exit:
> Claude Code ships as a Bun executable to millions of users. If Bun breaks, Claude Code breaks. Anthropic has direct incentive to keep Bun excellent.
…
> Bun's single-file executables turned out to be perfect for distributing CLI tools. You can compile any JavaScript project into a self-contained binary—runs anywhere, even if the user doesn't have Bun or Node installed. Works with native addons. Fast startup. Easy to distribute.
> Claude Code, FactoryAI, OpenCode, and others are all built with Bun.
…
> Over the last several months, the GitHub username with the most merged PRs in Bun's repo is now a Claude Code bot. We have it set up in our internal Discord and we mostly use it to help fix bugs. It opens PRs with tests that fail in the earlier system-installed version of Bun before the fix and pass in the fixed debug build of Bun. It responds to review comments. It does the whole thing.
> This feels approximately a few months ahead of where things are going. Certainly not years.
…
> We've been prioritizing issues from the Claude Code team for several months now. I have so many ideas all the time and it's really fun. Many of these ideas also help other AI coding products.
…
> Instead of putting our users & community through "Bun, the VC-backed startups tries to figure out monetization" – thanks to Anthropic, we can skip that chapter entirely and focus on building the best JavaScript tooling.
https://bun.com/blog/bun-joins-anthropic
Turn every potentially useful development tool into some LLM hype bullshit to grow the bubble.
Same thought and I can't wait for a video with a very confused Theo...
I mean, it's likely very important for them to have a fast and sandboxed code executor available. But it's not like Bun would fight against improvements there or refuse paid work on specific areas, right?
Accompanying post https://bun.com/blog/bun-joins-anthropic
I hope they have a clause regarding what to do if Anthropic and Bun should part. Looking for sponsor is one thing, bet direction and velocity might not align in future. Which is what I'm most afraid of tbh.
Interesting. Eyes turn to Deno...
Big payday soon for zig too?
Might was well vertically integrate the entire stack with that much cash.
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> Yes. And now we get access to the resources of the world’s premier AI Lab instead of a small VC-backed startup making $0 in revenue
Just another day in San Francisco.
I thought that was sarcasm, but nope, at least they are honest and the VC probably really made out well.
Why would it be sarcasm?
deno won, rust won
I'm not sure about that. Has any of them, individually or in total, unseated nodejs significantly?
Neither of them is aiming to unseat Node.js from existing deployments. Bun has made inroads by being the foundation of Claude Code, Opencode, Midjourney. At my previous workplace, we replaced Yarn Classic with Bun for package management and replaced Bash scripts with Bun shell for setup and CI scripts.
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