Perl and JavaScript both give you a minimally specified set of tools you can use to build your own more advanced object system.
IMO, that's why both languages have been able to be extended and adapt so much.
If you look at tools like Moo and Moose in Perl and the different coding paradigms that evolved in JS before the "class" keyword was standardized, this is pretty clearly evident.
JS has had the advantage of a standards committee pushing new language features aggressively. Perl has moved more slowly, keeping a majority of functionality in libraries.
IMO, that's why both languages have been able to be extended and adapt so much.
If you look at tools like Moo and Moose in Perl and the different coding paradigms that evolved in JS before the "class" keyword was standardized, this is pretty clearly evident.
JS has had the advantage of a standards committee pushing new language features aggressively. Perl has moved more slowly, keeping a majority of functionality in libraries.