For what it's worth, in my last experience with Bun[0] I ran into a couple of bugs where it seemed Rust could have helped, e.g. using Bun.write
[0]: https://mastrojs.github.io/blog/2025-10-29-what-struggled-wi...)
I've had surprisingly good results from getting AI agents to take a script in shell, python or typescript and have it translate it into those other programming languages, including rust versions. Or swapping from one build system to another.
Or take on an additional/related feature (like Redis grepping over the new array data types). Because you can be relatively sure the borders are stable and you can limit the surface/scope.