Yeah ChromeOS has the same problem. They have a Javascript-native terminal emulator, and a wasm (formerly PNaCL) implementation of open-ssh. But they have to use ChromeOS specific browser extensions in order to allow native TCP connections to port 22 from wasm, and Google only gives themselves this privilege, not any random dev like us.

I'm curious to see if this weird stack gets ported to the Googlebooks or if they just make a mouse-friendly Android app instead.