message: demo: Revert accidental commit
  Use pirate.glb again
diff: var loader = new THREE.GLTFLoader()
  loader.setMeshoptDecoder(MeshoptDecoder)
  - loader.load('../jrat/scene.glb', function (gltf) {
  + loader.load('pirate.glb', function (gltf) {
  var bbox = new THREE.Box3().setFromObject(gltf.scene);
  var scale = 2 / (bbox.max.y - bbox.min.y);
  