Im one of the authors of this. Right now the code is very unstable as we're tracking the performance branch of the JS implementation. Once the JS version hits 1.0 I'll be putting a bunch of effort into making the API cleaner and more rusty and documenting things.

It does work and can actually be used as a backend for the JS implementation if you use the wasm backend we've built. In fact, this is how we have tested it, by compiling to WASM and running the JS test script against it.

yeah... you better wait for 1.0...