How to push pure audio stream on Web platform?

The SDK internally defaults to pushing audio and video. If you want to push a pure audio stream, when calling the createStream method, you need to set the "video" property of the camera object to "false".

let localStream = await zg.createStream({
        camera: {
            video: false,//Do not push video
            audio: true,
       }
  });

let localStream = await zg.createStream({
        camera: {
            video: false,//Do not push video
            audio: true,
       }
  });