`this.emit` will send the error to the iframe ( or out of ) if you are trying to send it to any event bindings in the current frame it would be ` this._emitter.emit`

I do not think that the errors should be Hone specific in this area. Also I think if we are going to emit errors we should probably always wrap them in a error object like in the error event below.

```javascript
this._emitter.emit( 'error', new Error( 'message' ) );
```