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Rewrite Bun in Rust has been merged

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Re: Rewrite Bun in Rust has been merged

#571

Post by famouswaffles »

fragmede wrote: post #561
famouswaffles wrote: post #541

Earlier quoted context omitted.

Human speed thought doesn't matter here because it's not human reviewed. The code was generated. It exists and it (now) works to the extent they're satisfied with going through with a canary release. Going on about about '9 days' is working with a mental model that simply does not apply here. That is my point. If you think there should be human review or that there should have been a lot more human collaboration, tha…

I'm not sure where I accused Jarred of lying. All I'm saying is that 9 days is not very long.

The chain we're on and the comments I originally responded to have such concerns. And I mean, if it's not going to be reviewed by humans then really what makes 9 days too soon ? Should the code just sit there collecting dust until everyone agrees an arbitrary amount of time has passed ?

Re: Rewrite Bun in Rust has been merged

#572

Post by famouswaffles »

geodel wrote: post #559
famouswaffles wrote: post #473

Earlier quoted context omitted.

Stop thinking about '9 days' like it means the same thing in an era where machines can generate thousands of lines of code in a few hours. There is no way a human rewrite like this wouldn't be roughly at the same stage with a 9 day delta. In that case, some of these accusations would be reasonable to make. But that is not the case here.

Thats fine if some Claude code agent made PR and committed it. No human involved, no human drama ensued. People here are pointing the problem because Anthropic dude claimed, it is an experiment, tests are still failing, may go nowhere.. blah..blah.

Yes because it was an experiment and tests were indeed failing at that point in time, but guess what ? When an experiment succeeds you probably don't throw away the results.

Re: Rewrite Bun in Rust has been merged

#573

Post by fg137 »

serial_dev wrote: post #348
tshaddox wrote: post #274

Earlier quoted context omitted.

Bun isn't a node.js wrapper. It's an alternative to node.js that sits at roughly the same spot in the stack. Node.js is a distribution of the V8 JavaScript engine (the thing that executes JavaScript in the Chrome browser), along with a bunch of standard library code written mostly in C++. Bun is a distribution of the JavaScriptCore engine (the thing that executes JavaScript in the Safari browser), along with a bunch…

Answering “who is even using this software” is unfortunately missing in your answer. I am honestly curious. I’ve never seen it “in the wild” (in job descriptions, hearing from past colleagues, meetups etc). Only place I heard about it is HN and Twitter.

To my limited knowledge, "serious" production systems most likely use Node.js instead of any alternatives, and I don't see any movement towards adopting Bun.

Re: Rewrite Bun in Rust has been merged

#575

Post by fg137 »

perching_aix wrote: post #22

PR so thick, the page failed to load the first time I opened it, and the comments still continue to fail to load. Absolutely hilarious. Though that may be just GitHub having a normal one, hard to tell these days. 1 009 257 lines added 4024 lines removed 6755 commits 2188 files touched I haven't the slightest clue how anyone would even remotely hope to review this. I guess by just using even more AI? Or maybe by throw…

Bun is owned by Anthropic.

Hopefully that answers all your questions.

Re: Rewrite Bun in Rust has been merged

#576

Post by deadbabe »

To me the interesting thing to watch about this project is that if it fails and Bun becomes a piece of shit even with all the resources at their disposal, it means LLMs are probably not going to be the revolutionary tech everyone has been hyping it up to be. It’s useful sure, but software engineers aren’t going away. How could anyone interpret this any other way?

Re: Rewrite Bun in Rust has been merged

#577

Post by itishappy »

Tesl wrote: post #539
tasuki wrote: post #135

Earlier quoted context omitted.

You, nine days ago[0]: > I work on Bun and this is my branch > This whole thread is an overreaction. 302 comments about code that does not work. We haven’t committed to rewriting. There’s a very high chance all this code gets thrown out completely. Maybe... it wasn't such an overreaction? [0]: https://news.ycombinator.com/item?id=48019226

I'm really out the loop here so maybe you can help answer me a question - why is HN unhappy about this rewrite? why are people writing here almost as if they feel betrayed by Bun being rewritten from Zig into Rust? I genuinely don't get it. I've been following this Bun stuff a bit but I don't understand where the HN sentiment is coming from.

My read is it's less the rewrite and more the messaging around the rewrite. Nine days between "you're over-reacting" and merge is surprising, to say the least. Sure will be interesting to see that blog post!

Re: Rewrite Bun in Rust has been merged

#578

Post by Herbstluft »

I mean aside from the somewhat...dishonest statements from the people involved, giving false explanations is one thing, but calling people who smelled this "overreacting" gives this a weird taste.

I am neutral on such a rewrite itself, there are pros and cons to the whole "rewrite in Rust" topic. People are making decent arguments. But the way the initiator here reacted makes it seem like the Bun team itself thinks they are doing something weird here...

Guess reviewing any code isn't exactly their thing either anymore? And I guess adjusting the tests themselves is certainly one way to make things pass.

Ultimately this just seems like it was done specifically to make Bun more "ai friendly". Whether it turns out good or not that appears to be the motivation behind it.

Re: Rewrite Bun in Rust has been merged

#579

Post by deadbabe »

noobermin wrote: post #563
teterphiel wrote: post #75

Earlier quoted context omitted.

not enough people are emotionally prepared for if it’s not going wrong even in the slightest

I think given the novelty of this, a lot of eyes will be on it, so a lot of issues will be dealt with out of the gate. The problem will be when smaller projects that aren't in the spotlight think it's safe too and then do stuff like this after being encouraged by bun, and for those projects then lots of bugs will just remain unfixed. Basically a nation state adversary's wildest dreams came true today.

If that scenario happens it just means the collapse will be slower but still inevitable as anecdotes pile up and reach critical mass of common knowledge.

Re: Rewrite Bun in Rust has been merged

#580

Post by cwyers »

andrepd wrote: post #509
Jarred wrote: post #76

Still writing the blog post about this. Will share more details. For where this is coming from, skim the bugfixes in the Bun v1.3.14 and earlier release notes. Rust won’t catch all of these - leaks from holding references too long and anything that re-enters across the JS boundary are still on us. But a large % of that list is use-after-free, double-free, and forgot-to-free-on-error-path, which become compile errors…

> The codebase is otherwise largely the same. The same architecture, the same data structures. How can you possibly verify this, if a 1M line patch was written over 7 days? It's at best a hunch (vibes?), and at worst a lie.

Because it passes the existing test suite? And he knows what's in the test suite?
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