Javascript framework (RightJS) as content-script in a page-mod

Question

I'm new to the jetpack world (and firefox extension for that matter) and while doing some research on the possibility of jetpack, I found something strange. I did a simple test project that included a javascript framework (RightJS) in a pagemod (the tutorial used jQuery and that seemed to works fine) and I got the following error :

error: An exception occurred.
Traceback (most recent call last):
File "/home/nic/Aptgeek/TestProjects/ff-extension/data/external/libs/right-src.js", line 5979, in
File "/home/nic/Aptgeek/TestProjects/ff-extension/data/external/libs/right-src.js", line 990, in
TypeError: Array.include is not a function

My main.js script is fairly simple :

var pageMod = require("page-mod"); 
var self = require("self"); 
exports.main = function() { 
        pageMod.PageMod({ 
                include: "*", 
                contentScriptWhen: 'ready', 
                contentScriptFile: [self.data.url('external/libs/right-src.js'), 
                                    self.data.url('test.js')], 
                onAttach: function onAttach(worker) { 
                        worker.on('message', function(message) { 
                                console.log(message); 
                        }); 
                } 
        }); 
} 

After seeing that discussion : http://groups.google.com/group/mozilla-labs-jetpack/browse_thread/thr..., I began to wonder about the jetpack javascript framework support. Am I using page-mod incorrectly ? Or should that work ? Is there any limitations concerning the use of javascript framework as content-script in a page-mod ?