The main change is to the connect() method which now checks the urlOrChannel variable to determine which arguments to pass to WebChannel.open. The url case remains largely the same, we simply check that it is of type string. If a WebSocket or RTCDataChannel is passed, we use the object prototypes constructor name to determine the type of the instance variable provided is one which we expect and then forward it on to WebChannel.open, along with the name so we dont have to do the same work in WebChannel. We use Object.getPrototypeOf because accessing the __proto__ directly is not recommended.
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