Overriding .onmessage triggers "cWS does not support multiple listeners"

[Rush]

I wanted to handle first message differently then the rest:

const messageHandler = message => {
        handleDifferently(message);
        ws.onmessage = anotherMessageHandler;
      };
      ws.onmessage = messageHandler;

cWS does not support multiple listeners for the same event. Old listener for 'message' event will be overwritten

Expected: no warning issued

[goriunov]

This is just a warning informing you about switch of the listener unfortunately there is no way to disable that at the moment.

[Rush]

Correct - I understand it's a minor issue. Reporting it nonetheless.