如何把ImageReceiver收到的视频帧数据保存到本地

nextImage.getComponent(image.ComponentType.JPEG, async (err: BusinessError, imgComponent: image.Component) => { 
  if (err || imgComponent === undefined) { 
    return; 
  } 
  if (imgComponent.byteBuffer as ArrayBuffer) { 
    let file = fs.openSync(path, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE); 
    write(file.fd, imgComponent.byteBuffer).then((writeLen) => { 
      console.info("write data to file succeed and size is:" + writeLen); 
      fs.closeSync(file); 
    }).catch((err: BusinessError) => { 
      console.info("write data to file failed with error message: " + err.message + ", error code: " + err.code); 
    }); 
    nextImage.release() 
  } else { 
    return; 
  } 
})