you can go through https://github.com/video-dev/hls.js/blob/master/docs/API.md#ploader and change the class this way to get the data you displayed.

class pLoader extends Hls.DefaultConfig.loader{
constructor(config) {
 super(config);
 var load = this.load.bind(this);
 this.load = function (context, config, callbacks) {
  if (context.type == 'level') {
    var onSuccess = callbacks.onSuccess;
    callbacks.onSuccess = function (response, stats, context) {
      console.log(response.data);
      onSuccess(response, stats, context);
    };
 }
  load(context, config, callbacks);
};

} };