I'm not sure Rust is an especially great language for interop purposes or that the productivity will be high enough to keep up with the JavaScript implementation.
If you want to make a library with a C compatible API I'd be tempted to explore SubstrateVM. It can export C symbols to the generated standalone .so / .dll files, maybe you can even reuse some of the JS code, or failing that, a Java/Kotlin implementation would be compiled down to native code or be usable from other scripting languages like Ruby.
If you want to make a library with a C compatible API I'd be tempted to explore SubstrateVM. It can export C symbols to the generated standalone .so / .dll files, maybe you can even reuse some of the JS code, or failing that, a Java/Kotlin implementation would be compiled down to native code or be usable from other scripting languages like Ruby.