function cleanup () {
    transport$$1.removeListener('open', onTransportOpen);
    transport$$1.removeListener('error', onerror);
    transport$$1.removeListener('close', onTransportClose);
    self.removeListener('close', onclose);
    self.removeListener('upgrading', onupgrade);
  }
function cleanup () {
    transport$$1.removeListener('open', onTransportOpen);
    transport$$1.removeListener('error', onerror);
    transport$$1.removeListener('close', onTransportClose);
    self.removeListener('close', onclose);
    self.removeListener('upgrading', onupgrade);
  }
function cleanup ( ) { transport$$1 . removeListener ( 'open' , onTransportOpen ) ; transport$$1 . removeListener ( 'error' , onerror ) ; transport$$1 . removeListener ( 'close' , onTransportClose ) ; self . removeListener ( 'close' , onclose ) ; self . removeListener ( 'upgrading' , onupgrade ) ; }
Remove all listeners on the transport and on self
Remove all listeners on the transport and on self