three.js starter

// Remember to bring in three.js and here is the script for the trackball controls as well: 
// https://cdn.rawgit.com/mrdoob/three.js/dev/examples/js/controls/TrackballControls.js

//RENDERER
const renderer = new THREE.WebGLRenderer({
  canvas: document.getElementById('canvas'),
  antialias: true
});
renderer.setClearColor(0x25c8ce);
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);

//CAMERA
const camera = new THREE.PerspectiveCamera(
  35,
  window.innerWidth / window.innerHeight,
  0.1,
  3000
);

//SCENE
const scene = new THREE.Scene();

//LIGHTS
const light1 = new THREE.AmbientLight(0xffffff, 0.5),
      light2 = new THREE.PointLight(0xffffff, 1);

scene.add(light1);
scene.add(light2);

//OBJECT
const geometry = new THREE.CubeGeometry(100, 100, 100);
const material = new THREE.MeshLambertMaterial({ color: 0xf3ffe2 });
const mesh = new THREE.Mesh(geometry, material);

mesh.position.set(0, 0, -1000); //set the view position backwards in space so we can see it
scene.add(mesh);

//RENDER LOOP
requestAnimationFrame(render);

function render() {
  mesh.rotation.x += 0.01;
  mesh.rotation.y += 0.03;
  renderer.render(scene, camera);
  requestAnimationFrame(render);
}

window.addEventListener( 'resize', function () {
  camera.aspect = window.innerWidth / window.innerHeight;
  camera.updateProjectionMatrix();
  renderer.setSize( window.innerWidth, window.innerHeight );
}, false );

no idea, try copying this as boilerplate and removing the bits you don't need
https://codepen.io/vcomics/pen/yLyXQJG