So, An HTML5 game Cross-Code is coming to the Switch, but looking around there isn't any tech available for wrapping an HTML5 game up for the Switch. Nothing like Cordova, NW.js, etc. Unlike the Wii U which had the Nintendo Web Framework, which isn't available for the Switch. The developer RadicalFishGames confirmed that it's their publisher Deck13 that is porting it but hasn't released any details of how. How do people think they've managed to port it?