DS.change is emitted on an instance multiple times after only 1 modification

[kabalage]

If I have n instances of a resource and modify one of them, DS.change is emitted n times on that one instance. Here's a plnkr.

[kabalage]

As I see now, every callback given to data.on('DS.change', function(resource, data) { /*...*/ } is called with the modified data even if the data that changed is not the one it listens on. Updated the plnkr above to show the problem better.

The reason I want to listen on every instance separately is because I want to DSSave() them on change debounced independently.

[jmdobry]

The problem appears to be the implementation of Events that's being used. Events is mixed into the prototype of instance contructors, but doesn't correctly maintain a map of listeners, instead holding all listeners in one object, and therefore executing them all...