If you use CoffeeScript, you might have to watch out for unexpected variables being created by the transpiler. For example, if you write a method that ends with

If you use CoffeeScript, you might have to watch out for unexpected variables being created by the transpiler. For example, if you write a method that ends with a `while` loop, CoffeeScript will actually return an array with the evaluated results of the loop. Normally not a big deal, but when doing games in JS you need to watch out for excess memory use, since your framerate will tank if the GC runs too long/frequently.