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Brimstone: ES2025 JavaScript engine written in Rust

(github.com)
239 points ivankra | 1 comments | 16 Nov 25 11:41 UTC | HN request time: 0.377s | source
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cluckindan ◴[16 Nov 25 13:15 UTC] No.45944902[source]▶
Memory safety is one of Rust’s biggest selling points. It’s a bit baffling that this engine would choose to implement unsafe garbage collection.
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1. nicoburns ◴[16 Nov 25 14:45 UTC] No.45945492[source]▶
Even using something as simple as Vec means using `unsafe` code (from the std library). The idea isn't to have no `unsafe` code (which is impossible). It's to limit it to small sections of your code that are much more easily verifiable.

For some use cases, that means that "user code" can have no `unsafe`. But implementing a GC is very much not one of those.