Javascript implementation of Event Aggregator pattern

So I have done a lot of research and for some reason I can't find an implementation of the Event Aggregator pattern in Javascript. In fact, the only language that's always used is C# and there's always generics being used. It's a very useful pattern so I fail to realize why it only seems to be 'meant' for .NET. I was hoping that someone would be able to provide an implementation in Javascript or at the very least Java and NOT C# (I've seen enough of that). Thank you!