anodejs/node-rebus — comment on commit e991bbeb9405e4f59a86d19d4a253d039faf0d3b
File: lib/rebus.js line 183
By saary:

EventEmitter2 supports namespaces and listening on a parent namespace to get all sub namespace events.
You don't need multiple emitters but rather only one that you can create in a lazy fashion and return only it.