connect -> incomplete error message when missing parameters

[maverick-zhn]

To replicate the issue (I am missing the type of connection):

this.oada = await connect({ domain: this.domain, token: this.token })
      .catch(e => {
        console.log("Error -> failed to connect to OADA. The error was ", e);
      });

I got this:

Error -> failed to connect to OADA. The error was  TypeError: emitter.once is not a function

A more descriptive error message is needed.

[tomohiroarakawa]

connect should work without the connection parameter. Are you specifically looking at the case where connection is not provided and the OADA server is not responding?