##### MessagePort class

1. Properties
2. onMessage
3. hashCode
4. on
5. runtimeType
6. Methods
7. addEventListener
8. close
9. postMessage
10. dispatchEvent
11. noSuchMethod
12. removeEventListener
13. toString
14. Operators
15. operator ==
16. Constants
17. messageEvent

# onMessage property

Stream<MessageEvent> onMessage

Stream of `message` events handled by this MessagePort.

## Implementation

    Stream<MessageEvent> get onMessage => messageEvent.forTarget(this);