rcmnd

BunProject

Bun is an open-source all-in-one JavaScript and TypeScript runtime, bundler, test runner and package manager.

4 things

ZigSoftware Zig Software Foundation

loved

Zig made Bun possible. I would never have been able to build this much in 1 year if it wasn't for Zig.

Jarred Sumner on Zig, the language Bun was built in, in the post announcing the port to Rust

bun.sh ↗·2026-07-08Wrong?

RustSoftware

liked

Homegrown smart pointers offer worse ergonomics than Rust, with none of the guarantees.

Why Bun was rewritten from Zig to Rust

bun.sh ↗·2026-07-08Wrong?

JavaScriptCoreSoftware

uses

The start time difference between JavaScriptCore and V8 is interesting. JavaScriptCore seems to start around 4x faster.

How Bun chose JavaScriptCore over V8, from the Bun-joins-Anthropic post

bun.sh ↗·2025-12-02Wrong?

C++Software

mixed

C++ instead of Zig would be a reasonable choice for Bun. We would get constructors & destructors. We could delete lots of extern "C" wrapper code. But, we would still be reliant on style guides enforced through code review, and even with ASAN, memory corruption and memory leaks would still happen.

Bun weighing C++ vs Zig vs Rust

bun.sh ↗·2026-07-08Wrong?

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