使用XStream 报错：Error: The key-value separator ":" is not found in the sse line chunk!

[EternallyTm]

重现步骤

const response = await fetch('/api/v1/chat/assistant/chat', {
method: 'POST',
body: JSON.stringify(chatParam),
headers: {
'Content-Type': 'application/json',
'Authorization': Bearer ${token},
'Accept': 'text/event-stream', // 告诉服务器返回流式事件
},
})
if (!response || !response.body) {
onError(new Error("请求发生异常"));
return;
}
if (!response.ok) {
onError(new Error(HTTP error! Status: ${response.status}));
}
for await (const chunk of XStream({
readableStream: response.body,
})) {
console.log(chunk);
}
使用如下代码处理接收后端流式输出，会报错：Error: The key-value separator ":" is not found in the sse line chunk!
后端请求结果如下:
data: {"message": "你好", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "！", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "作为", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "专业的", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "AI", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "助手", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "，", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "我", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "随时", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "准备", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "回答", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "你的", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "问题", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "或", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "帮助你", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "解决问题", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "。", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "有什么", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "我可以", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "帮助", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "你的", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "吗", "id": "RTOy7TQVDAv3OIhp"}

data: {"message": "？", "id": "RTOy7TQVDAv3OIhp"}

当前行为

No response

预期行为

No response

上下文

No response

版本

1.0.4

您在哪些浏览器上遇到了这个问题？

No response

[YumoImer]

看数据没什么问题，确认下 response 是否是以空行结尾，感觉问题容易出现在这里。

比如一个正常的 SSE 返回结尾应该是这样「line 63 为空行」：