ROS3D not working with npm in Reactjs

edit

I installed ros3djs for Reactjs through npm by the following command:-

npm install ros3d

When I tried using it by the following code, I get an error(attached below):-

import ROSLIB from 'roslib';
import ROS3D from 'ros3d';
var rbServer = new ROSLIB.Ros({
        url : 'ws://192.168.0.115:9090'
    });
var viewer = new ROS3D.Viewer({
  divID : 'map',
  width : 1100,
  height : 650,
  antialias : true
});

The error:

I tried other way of installing ros3d through the official robotwebtools github repository as well, but the same error persists.

How can I solve this?

Thanks in advance.