ExtJS AOP similar to that provided in dojo?

I have used this dojo plugin that provides a wonderful implementation of declarative AOP. Does any开发者_JS百科body know of a similar plugin/library for ExtJS or for vanilla JS?

Ext adds a couple of basic AOP-related functions to the Function prototype (createInterceptor and createSequence). I would not call it a full-fledged AOP implementation by any means, but they are helpful in many cases. I'm not familiar with any Ext plugins or standalone JS implementations of AOP.