Never in my life would I have expected crosscode to be anything like HTML/JS based. That’s one of the most fluent games I’ve played.
Save yourself some hassle, just make your game with gamemaker, UE4 or unity if you have any ambitions of going cross platform in the vague future unless it's really simple point and click slow paced strategy games, a dating sim / story game or similar.
Here's the talk you're (probably) talking about: https://www.youtube.com/watch?v=KfBzlzvt8RU