borisyankov/DefinitelyTyped — pull request #3080 by ryiwamoto (2014-11-03 10:10:04+00:00)
Title: fix eventemitter2 in browser

Fix for EventEmitter2(https://github.com/asyncly/EventEmitter2) isuee: https://github.com/borisyankov/DefinitelyTyped/issues/3075

I added tests for class inheritance.
I have no idea to avoid duplicating EventEmitte2 class definition. Please teach me more efficient way.