[wsc981]

> One thing that's bothered me is that lua silently returns nil when you reference non-existing elements. That's been a pain when debugging, since a line with a typo (`a = typo`) doesn't fail, and the code fails much farther downstream (e.g. when doing arithmetic on `a`). So almost all my errors end up being "trying to do operation on a nil value", and there is no indication of why it's nil.

I am also making small games with love2d. I've found you can prevent many of such issues if you:

1. Create objects with private fields, using getters and setters to access values (as function calls will crash if you call them and the functions don't exist, unlike fields). I like an approach that is somewhat similar to this: https://www.lua.org/pil/16.4.html

2. Add assertions liberally, especially in constructors.