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I’ve not much to say on the actual lib, it seems great! However, don’t feel compelled to put all your rust code into a single lib.rs. You can split your work into several files and use ‘pub use’ and ‘mod’ in lib.rs to re-export your functions & types into a public API of your choosing.

cargo check and format time might also slightly improve!

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Funny, I often say the opposite. Don't feel compelled to split up your lib.rs. It's really refreshing to see a nice, compact library in one or two files. Much easier to follow, especially over "type per file". Of course, there are limits, but for a small lib like this, I personally would keep it in a single, or maybe two files.

I have a fair bit of experience writing Rust code and the current status is totally deliberate. I find module file sizes of about 400-800 lines of code optimal in terms of my ability to find things vs the unnecessary complexity of having to skip around files when changing something that touches an API boundary.

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