I like the style of the code. Can talk about your inspiration for it? I haven't seen Javascript written in that way before. It's clean but, at least to me, unintuitive. What is your background?
Been a frontend dev for 10 years angular and react. You’re right it’s a little mix of functional state management and imperative structures for the game objects.
not the author, but it looks Java-like to me - with the "everything is an object/class" approach.