Just curious if there is something that converts Rust to JavaScript?
Not as far as I know.
But you can compile Rust to WASM and call that from Javascript. Usable in the browser and under node.js.
so would wasm support most rust libraries if compiled with the bin project?
I have not played with WASM much but my understanding is no.
Threading is an issue. WASM does not support threads, but in the browser it can be done using web workers if I understand correctly.
You won't be able to do anything that requires network access and so on. At least not in the browser.
It wouldn't support anything system-dependent. Basically, you're limited to core+alloc, without most of std.