does EventSourcePolyfill contains onclose event

[jiangxiaoqiang]

how to known the message transfer complete or the connect close? I have tried this way seems did not work:

eventSource.addEventListener('complete', () => {
    console.log('Transfer of data is complete');
  });

  eventSource.addEventListener('onclose', () => {
    console.log('connection is closed');
  });

[Yaffle]

Event name should be close not onclose