WASM for hybrid implementation?

[Ledenel]

It seems like this implementation is suffering from the bad interaction between c++ and javascript. FWIW, it may be possible to compile the serialization and rpc core to WASM (maybe some extra c++ wrapper code here?), then the interfaces are exposed natively to javascript.

[zenhack]

Have you had a look at https://github.com/jdiaz5513/capnp-ts/ ?

...rpc support is still not finished (but partially implemented), but that's going to be the better way forward.