Babylon 3.3 running in Ejecta

gistfile1.js

const BABYLON = require('babylonjs')

var createScene = function () {

    // Create the scene space
    var scene = new BABYLON.Scene(engine);

    // Add a camera to the scene and attach it to the canvas
    var camera = new BABYLON.ArcRotateCamera("Camera", Math.PI / 2, Math.PI / 2, 4, BABYLON.Vector3.Zero(), scene);
    camera.attachControl(canvas, true);

    // Add lights to the scene
    var light1 = new BABYLON.HemisphericLight("light1", new BABYLON.Vector3(1, 1, 0), scene);
    var light2 = new BABYLON.PointLight("light2", new BABYLON.Vector3(0, 1, -1), scene);

    // This is where you create and manipulate meshes
    var box = BABYLON.MeshBuilder.CreateBox("sphere", {}, scene);

    // If we don't do this we get EXC_BAD_ACCESS in glDrawElements in Ejecta
    box.convertToUnIndexedMesh()

    scene.registerBeforeRender(() => {
      box.rotation.y += 0.013
      box.rotation.x += 0.007
    })

    return scene;

};

var w = window.innerWidth;
var h = window.innerHeight;
var scale = window.devicePixelRatio;
var w2 = w/2;
var h2 = h/2;

var canvas = document.getElementById('canvas');

if (!canvas) {
  canvas = document.createElement('canvas')
  document.body.appendChild(canvas)
}

canvas.width = w * scale;
canvas.height = h * scale;
canvas.style.width = w;
canvas.style.height = h;
canvas.clientWidth = w
canvas.clientHeight = h

let options = { disableWebGL2Support: true }
var engine = new BABYLON.Engine(canvas, false, options); // Generate the BABYLON 3D engine

var scene = createScene()

// Register a render loop to repeatedly render the scene
engine.runRenderLoop(function () { 
  scene.render();
});

// Watch for browser/canvas resize events
window.addEventListener("resize", function () { 
  engine.resize();
});