Is there any way I can use the moment.js format method on duration objects? I can't find it anywhere in the docs and it doesn't seen to be an attribute on duration objects.
I'd like to be able to do something like:
var diff = moment(end).unix() - moment(start).unix();
Also, if there are any other libraries which can easily accomodate this sort of functionality, I'd be interested in reccomendations.