I used https://github.com/roblouie/gameboy-emulator https://github.com/roblouie/gameboy-emulator which I forked and made a very minor tweak to allow streaming a

I used https://github.com/roblouie/gameboy-emulator https://github.com/roblouie/gameboy-emulator which I forked and made a very minor tweak to allow streaming audio over WebRTC. Code was super well organized and easy to understand. Was also very easy to integrate into the webapp.