【JavaScript】js 使用 fetch 获取流式数据

let response: any;
    try {
      response = await fetch(`${getApiUrl('base_api')}/tools/get_progress`, {
        method: 'POST',
        body: JSON.stringify({
          kb_name: params.kb_name,
          file_name: params.file_name,
        }),
        headers: {
          'Content-Type': 'application/json',
        },
      });
    } catch (error) {}

    const data = response.body;
    if (data) {
      const reader = data.getReader();
      const decoder = new TextDecoder('utf-8');
      parseStatus.value = true;
      while (parseStatus.value) {
        const { value, done: readerDone } = await reader.read();
        if (value) {
          const char = decoder.decode(value);
          console.log(char);
        }
        if (parseStatus.value) {
          parseStatus.value = !readerDone;
        }
      }
    }