Looks nice, but I'm not sure what to make of this when underscore.js has a 0.0 score (https://codeclimate.com/github/jashkenas/underscore/trends).
Here's the report for the underscore.js file with the specific issues that were identified: https://codeclimate.com/github/jashkenas/underscore/undersco...
if(foo) bar();
I understand why you may think if(foo) { bar(); }
is better, but it's unnatural for most peopleThe linting is configurable to projects preferences, by checking in a .jshintrc file.
So Underscore's choice to be single file effectively dooms it from the start. Ember.js, on the other hand, is larger but more decomposed and scores fairly well.
https://travis-ci.org/jashkenas/underscore
(funnily enough also been produced on a bluebox.net machine)
nevertheless overall this looks very promising - great UI design