Пример с Server Sent Events и асинхронным генератором

[monochromer]

Какие могут проблемы в таком примере кода:

async function* eventStream(url) {
  const eventSource = new EventSource(url);

  while (true) {
    const event = await new Promise((resolve, reject) => {
      eventSource.onmessage = resolve;
      eventSource.onerror = reject;
    });

    if (event.type === 'error') {
      eventSource.close();
      throw event;
    }

    yield event.data;
  }
}

const url = "/live-feed";
for await (const message of eventStream(url)) {
  console.log("message:", message);
}