When build tools run an uglifier on your code this is what the variables comes out as. Takes all your logically named variables and shortens them like a-z. They can make it "beautified" by un-minifying (not all on 1 line) but you can't get their original variables name without the original source.
I think they may have been referring to the names right down at the bottom - a minifier wouldn't use "NWvQtGjjfQX" without having used all the two, three four or five letter variable names.
Beautifiers should use something like Gfycat uses for their URLs instead, that would be prettier and simpler/faster to understand.
> Most randomly generated URLs look like this: G1XeD4SwlHReDA. We thought it would be fun to do it differently. Our URLs follow the nomenclature: AdjectiveAdjectiveAnimal This is enough to give us a namespace of billions, while also letting humans write them easier. You’re welcome!
https://gfycat.com/about
Wouldn't that just make the code more confusing? You'd get some random name that doesn't mean anything to what its intended purpose is. Keeping the simple 'a-z' scheme the beautifier does allows people to not use the variable name as a descriptor of what it handles.
I better get on this one quick..