Forced options to be an object on collection.fetch

[Gazler]

On collection.fetch, the argument being sent through will default to an empty object if the object sent through is not an object. This is because if you call collection.fetch with an array as an argument (for example in a callback) then the "reset" event is not triggered.

[jashkenas]

Why would you call fetch() with an array as an argument?

[Gazler]

In the specific example, I was using it as a callback from pusher and I wanted to call collection.fetch() directly as a callback, I was simply trying to avoid doing something along the lines of:

pusherFetch: function() {
  this.fetch();
}