Joose[1] took these patterns about as far as anyone has (open source) as of several years ago; it's based on Moose[2] for Perl.
When Bill Edney and Scott Shattuck finally release TIBET[3] upon the world (something like 15 years in the making), it will take "real OOP" for JavaScript to a whole new level. TIBET is basically a full-on Smalltalk system (including a kernel, images, modules) for JavaScript, but it's not a compile-to-JS kit; rather, it builds right on top of the language, kind of a "super library" for ultra heavy-duty browser based apps.
When Bill Edney and Scott Shattuck finally release TIBET[3] upon the world (something like 15 years in the making), it will take "real OOP" for JavaScript to a whole new level. TIBET is basically a full-on Smalltalk system (including a kernel, images, modules) for JavaScript, but it's not a compile-to-JS kit; rather, it builds right on top of the language, kind of a "super library" for ultra heavy-duty browser based apps.
[1] https://github.com/Joose/Joose
[2] http://search.cpan.org/~ether/Moose-2.1204/lib/Moose.pm
[3] http://technicalpursuit.com/