afjgasdfjlasdf

maintenance time, too.

We're in something of a JS framework boom (or hell, if you wish) right now. These people are developing as if their shit libraries won't exist in 3 years. Hence, the total lack of documentation and ongoing maintenance from so many of them. I've already had to maintain code that used abandoned JS frameworks. I'm a little scared of what's around the corner here...

There is no such thing as an "anonymous closure". There are only anonymous functions which may or may not create a closure. Early LISPs either had no way of creating closures, or did so through some sort of function or other mechanism. It wasn't until Scheme came around that lexical closures really became a thing in Lisp world.

Perl and PHP both have closures. In fact, Perl is closer to Scheme/Lisp than most languages (at least Perl doesn't screw up scoping like JavaScript, replace first-class functions with second-class-bastardizations like Ruby, or do whatever Python thinks it's doing with lambda... ugh)