checking e is array instead of just defined

[yaodingyd]

This fix if we are trying to intentional overwrite object's native properties as event name, like 'toString'

[scottcorgan]

Do you have an example?

[yaodingyd]

Sure!

var emitter = new Emitter();
emmitter.on('toString', function(){
    console.log('I just want to use toString as an event name')
})

Currently it would show (e[name] || (intermediate value)(intermediate value)).push is not a function because e.toString is truthy, but we really want an array.

[yaodingyd]

@scottcorgan any update?