Neat! I did a fair bit of toying with Go's WASM target early on and was able to port a couple neat things to the web. The sheer size of the WASM output though was a limiting factor for me, and I kind of stopped toying with it a number of years ago.

Are you using the built in WASM target? I've been told Tiny Go's WASM build target is worth investigating but haven't tried.