JS battle: How I wrote my own eval()

Once upon a time, Alexander was offered to make a game for stand on WSD conference. He had only three weeks, was completely free to choose a subject and could test the result on all of his colleagues.

This talk covers making a game for developers (not only front-end ones). Why RxJS and Workers are cool, but the most popular game engine isn't? Is it possible to make JS safe and developers happy? How to survive loads of events and criticisms and release your game for the Day of the Programmer?