[JS] What extra javascript libraries are there?

So the ever helpful Phil gave me a nudge towards using _.each() in one of my sheetworker scripts and I googled to find that it's not part of the standard javascript set up (apparently) but is part of Underscore.js. My question is, are there other libraries we have access to for our javascript, if so which are they?  I don't see them mentioned in the wiki, though I may have missed something, and I apologise if I have. I'm still getting up to speed on this, so please be kind!

Underscore is the only extra library available to the sheet workers at this time.

Thanks!

As the question was answered, I'll go ahead and close this thread.  Please don't hesitate to start a new thread if you've any questions or concerns. :)