Go makes pretty bad WebAssembly. It only embeds in Javascript, and it's at least 2MB for Hello World. You can't really use it in server-side engines like wasmer/wasmtime.

TinyGo is far better, but only supports a subset of Go's stdlib.

I'm playing with TinyGo, and using GPRC communication with the outer engine as a poor substitute for WASM interface types.

https://github.com/fizx/goingo if you want to read the ugly prototype!