oven-sh/bun on Hacker News

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Rewrite the Bun JSON parser around a SIMD structural index

story by cebert · 2026-06-30 · 0 comments

I would just like to point to a single issue that has major ramifications in using Bun: https://github.com/oven-sh/bun/issues/14144

comment by emilfihlman · 2026-06-20 · in Bun has an open PR adding shared-memory threads to JavaScriptCore

…platform tests too: https://web-platform-tests.org/ Bun has a similar large corpus of JS/TS tests: https://github.com/oven-sh/bun/tree/main/test You're right about general purpose rewrites, but language runtimes are a lot easier.

comment by esprehn · 2026-06-20 · in Bun has an open PR adding shared-memory threads to JavaScriptCore

Here's a trivial docs issue I opened, where I had a similar experience: https://github.com/oven-sh/bun/issues/31233 The difference is that the PRs to fix that problem were already open when I created the issue. I was unaware of them (I…

comment by tomjakubowski · 2026-06-20 · in Bun has an open PR adding shared-memory threads to JavaScriptCore

I, too, was curious to see it in practice. Here is the ticket opened by @retr0id: https://github.com/oven-sh/bun/issues/28030 And here is the swarm of bots / LLMs / agents that open, review and bikeshed the PR before it's closed by the…

comment by Delgan · 2026-06-20 · in Bun has an open PR adding shared-memory threads to JavaScriptCore

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Bun (the JavaScript runtime) is being vibe-ported from Zig to rust

story by birdculture · 2026-06-19 · 0 comments

…GitHub releases and then runs the payload. 3. Small loader payload: - Downloads Bun v1.3.13 from: https://github.com/oven-sh/bun/releases/download/bun-v1.3.13... - Uses curl and unzip. - Creates temporary directories under /tmp/b-* - Runs…

comment by thejaybird · 2026-06-05 · in Supply chain attack alert: .github/setup.js

what a horrible typo with the scoped name, it should be `npx @baggiiiie/yadiff https://github.com/oven-sh/bun/pull/30412 `!

comment by baggiiiie · 2026-06-04 · in Show HN: yadiff, yet another diff viewer, based on pierre's diffshub

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Show HN: yadiff, yet another diff viewer, based on pierre's diffshub

story by baggiiiie · 2026-06-03 · 1 comment

…code of this poor quality would have been allowed anywhere near the main branch before LLMs. [0] https://github.com/oven-sh/bun/blob/d2a6506dfad4c3ef3dddb9ae... [1] https://ziggit.dev/t/bun-s-zig-fork-got-4x-faster-compilatio...

comment by lunar_mycroft · 2026-06-03 · in Bun has been converted to rust. Now what?

…back in February, so it's not accurate to classify it as "GitHub's automated anti-slop detection". https://github.com/oven-sh/bun/commit/c01a5e08be896e1d1f4529... It was Jarred who deliberately added the slop label to that PR, which…

comment by simonw · 2026-06-03 · in Bun has been converted to rust. Now what?

…added here is easily the worst example of "test repeats implementation" I have seen in my career: https://github.com/oven-sh/bun/pull/30728/files#diff-863477b...

comment by tomjakubowski · 2026-05-28 · in Dynamic Workflows in Claude Code

I think this is the glimpse of what to come - https://github.com/oven-sh/bun/issues/31463

comment by kikimora · 2026-05-27 · in Rewrite Bun in Rust has been merged

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Bun team is rewriting SIMD from Rust to C++

story by ansipunk · 2026-05-25 · 5 comments

https://github.com/oven-sh/bun/issues/30921 > A CVE wasn’t announced for an HTTP Request Smuggling vulnerability Even before the acquisition of Anthropic, there had never been a single vulnerability report.…

comment by classicposter · 2026-05-24 · in Electrobun 2.0 will be decoupled from Bun due to the Rust rewrite

…understood problem You would think, but the initial implementation of this stripped ICC profiles ( https://github.com/oven-sh/bun/issues/30197 ), and while that was fixed in time for the release, it still currently doesn't understand EXIF…

comment by 190n · 2026-05-24 · in Bun.Image

…said of Bun, which switched to an entirely different language in a single, million-line PR?[0] [0]: https://github.com/oven-sh/bun/pull/30412

comment by sheept · 2026-05-22 · in Bun support is now limited and deprecated

…rewritten codebase. There are just too many lines of code, 1 million lines to be exact [1]. [1]: https://github.com/oven-sh/bun/pull/30412

comment by maxloh · 2026-05-22 · in Bun support is now limited and deprecated

can't help myself: how common to see code like https://github.com/oven-sh/bun/blob/main/src/bun_core/string... instead of simple ilog2()? I guess, ut somewhat explains how they got 700k+ lines of code

comment by delamon · 2026-05-18 · in Bun Rust rewrite: "codebase fails basic miri checks, allows for UB in safe rust"

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Bun Audit: Add UB-exorcism audit workspace and executive guide

story by gmays · 2026-05-17 · 0 comments

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Add –implementation-language flag to Bun

story by quasigloam · 2026-05-17 · 0 comments

…to load a large number of comments. 2) The slop translation of Bun resulted in immediate bugs ( https://github.com/oven-sh/bun/issues/30719 ) that the hyped Mythos apparently did not find. 3) AI features and (likely, though not proven) AI…

comment by vnaghra · 2026-05-16 · in I believe there are entire companies right now under AI psychosis

…allocator was used for some memory. That could cause problems in Rust if you erase the lifetime https://github.com/oven-sh/bun/blob/main/src/bun_core/string...

comment by defen · 2026-05-15 · in Bun Rust rewrite: "codebase fails basic miri checks, allows for UB in safe rust"

Holy cow: architector4@AGOGUS:/tmp$ git clone --depth=1 ' https://github.com/oven-sh/bun ' Cloning into 'bun'... … architector4@AGOGUS:/tmp$ cd bun/ architector4@AGOGUS:/tmp/bun$ find -type f -name '*.rs' -exec grep unsafe {} \; | grep -v…

comment by simonreiff · 2026-05-15 · in Bun Rust rewrite: "codebase fails basic miri checks, allows for UB in safe rust"

…that strings must be strict UTF-8. It's totally alien to the safe way Rust handles strings. [1] https://github.com/oven-sh/bun/blob/main/src/bun_core/string...

comment by Animats · 2026-05-15 · in Bun Rust rewrite: "codebase fails basic miri checks, allows for UB in safe rust"

…get around to it (or just get rid of all this unsafe code that they don't actually need). [1] https://github.com/oven-sh/bun/blob/4d443e54022ceeadc79adf54... - the pointers derived from the first mutable references are invalidated by…

comment by gpm · 2026-05-15 · in Bun Rust rewrite: "codebase fails basic miri checks, allows for UB in safe rust"

…strategy is to have AI produce "fixes" like these which will end up infecting the entire codebase: https://github.com/oven-sh/bun/pull/30728

comment by tadfisher · 2026-05-15 · in Bun Rust rewrite: "codebase fails basic miri checks, allows for UB in safe rust"

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Bun Rust rewrite: "codebase fails basic miri checks, allows for UB in safe rust"

story by ndiddy · 2026-05-15 · 345 comments

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Bun single, statically-linked musl binary

story by 1vuio0pswjnm7 · 2026-05-15 · 1 comment

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Refactor: Reduce usage of unsafe across Bun Rust codebase ;)

story by croes · 2026-05-15 · 0 comments

https://github.com/oven-sh/bun/pulls and now we have lots of troll PRs...

comment by jjgoi · 2026-05-15 · in Rewrite Bun in Rust has been merged

…a sanitiser. It's not a proof solver, but it screams to high heaven about this code nonetheless. https://github.com/oven-sh/bun/issues/30719

comment by Pay08 · 2026-05-15 · in Rewrite Bun in Rust has been merged

…Bun required Bun, so distributions were unusable to ship it or anything that depended on it: https://github.com/oven-sh/bun/issues/6887 Any ideas if this is now changing and Bun can be bootstrapped with "just" Rust?

comment by WhyNotHugo · 2026-05-14 · in Rewrite Bun in Rust has been merged

…time went into preparing this file with very detailed instructions on mapping Zig to Rust idioms: https://github.com/oven-sh/bun/commit/46d3bc29f270fa881dd573... On top of that, if you look at 'Pointers & ownership' and 'Collections'…

comment by sesm · 2026-05-14 · in Rewrite Bun in Rust has been merged

…UB problems caused by unsafe code, the SAFETY blocks for the unsafe code are also, well, lies. [1] https://github.com/oven-sh/bun/blob/63035b3e37/src/bun_core/... [2] https://github.com/oven-sh/bun/blob/63035b3e37/src/bun_core/...

comment by 12_throw_away · 2026-05-14 · in Rewrite Bun in Rust has been merged

Source: https://github.com/oven-sh/bun/pull/30412

comment by linkregister · 2026-05-14 · in Rewrite Bun in Rust has been merged

https://github.com/oven-sh/bun/security Surprisingly, they appear to have not disclosed any vulnerabilities whatsoever. It's likely there have been numerous vulnerabilities in the past, but they are all being ignored.…

comment by classicposter · 2026-05-14 · in Rewrite Bun in Rust has been merged

…bun upgrade --canary [1.55s] Upgraded. Welcome to Bun's latest canary build! Report any bugs: https://github.com/oven-sh/bun/issues Changelog: https://github.com/oven-sh/bun/compare/0d9b296af...19d8ade2c schematic git:(main) bun run…

comment by veidr · 2026-05-14 · in Rewrite Bun in Rust has been merged

…plans to issue a CVE for this HTTP request smuggling attack vector fixed in the latest bun release? https://github.com/oven-sh/bun/issues/29732

comment by halifaxbeard · 2026-05-14 · in Rewrite Bun in Rust has been merged

…in your large existing codebase and report back the mess. Theirs is littered with TODOs like this https://github.com/oven-sh/bun/pull/30412/changes#diff-6c2b5...

comment by Robdel12 · 2026-05-14 · in Remove .zig Files from Bun

The linked PR has been flagged as AI slop, but there seems to be an equivalent PR that's still open: https://github.com/oven-sh/bun/pull/30683

comment by plus · 2026-05-14 · in Remove .zig Files from Bun

…a few milliseconds". Even if 1 != 'a few'. It's possible the part of the commit reverted here, https://github.com/oven-sh/bun/commit/a42bf70139980c4d13cc55... , defeated the purpose of the test by removing the sleep. I don't think adding…

comment by onli · 2026-05-14 · in Rewrite Bun in Rust has been merged

> solving the ,,tests not pass'' problem by changing the tests themselves https://github.com/oven-sh/bun/pull/30412/changes/68a34bf8ed... This is great! Just add a random sleep(1) to a test, don't worry about it, it's going to be fine!

comment by q3k · 2026-05-14 · in Rewrite Bun in Rust has been merged

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Remove .zig Files from Bun

story by quasigloam · 2026-05-14 · 28 comments

…mental model of it should still match fairly well. For instance look at this Zig function: https://github.com/oven-sh/bun/blob/ed1a70f81708d7d137de8de0... Versus this Rust version: https://github.com/oven-sh/bun/blob/ed1a70f81708d7d137de8de…

comment by IshKebab · 2026-05-14 · in Rewrite Bun in Rust has been merged

…PR removing the zig source files being auto-tagged by bun's own CI as "ai slop" is so funny https://github.com/oven-sh/bun/pull/30680

comment by lucasloisp · 2026-05-14 · in Rewrite Bun in Rust has been merged

Claude's workflows might become good training data for LLMs: https://github.com/oven-sh/bun/tree/23427db/.claude/workflow...

comment by maxloh · 2026-05-14 · in Bun's rewrite in Rust was merged

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Bun's rewrite in Rust was merged

story by maxloh · 2026-05-14 · 8 comments

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Rewrite Bun in Rust has been merged

story by Chaoses · 2026-05-14 · 789 comments

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Bun now has official FreeBSD builds

story by gr4vityWall · 2026-05-13 · 0 comments