With postgres 10.1 and SCRAM-SHA-256 password encryption enabled, node-postgres driver throws the following error:

Error: Unknown authenticationOk message typeMessage { name: 'authenticationOk', length: 23 }

Not telling that encryption method is not supported or anything. It took a while to find out why my app is stopped working after i have changed the role name. I think there should be more verbose error for this case.