JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://rawgit.com/mrdoob/three.js/dev/build/three.min.js"></script>
<script src="https://rawgit.com/mrdoob/three.js/dev/examples/js/controls/OrbitControls.js"></script>

CSS

body {
	background-color: #000;
	margin: 0px;
	overflow: hidden;
}

JavaScript

// Simple three.js example

var lightY = 30; 
var logDepthBuffer = false; // <=== change to true to see bug

var mesh, renderer, scene, camera, controls, plane, light;

init();
animate();

function init() {

    // renderer
    renderer = new THREE.WebGLRenderer( { antialias: true, logarithmicDepthBuffer: logDepthBuffer } );
    renderer.setSize( window.innerWidth, window.innerHeight );
    renderer.shadowMap.enabled = true;
		renderer.shadowMap.type = THREE.PCFShadowMap;

    document.body.appendChild( renderer.domElement );

    // scene
    scene = new THREE.Scene();
    
    // camera
    camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 10000 );
    camera.position.set( 70, 70, 70 );

    // controls
    controls = new THREE.OrbitControls( camera );
    
    // ambient
    scene.add( new THREE.AmbientLight( 0x222222 ) );
    
    // light
    light = new THREE.DirectionalLight( 0xffffff, 1 );
    light.position.set( 0, lightY, 0 );
    light.castShadow = true;
    light.shadowCameraNear = 30;
    light.shadowCameraFar = 75;
    console.log( light );


		scene.add( light );
		scene.add( new THREE.CameraHelper( light.shadow.camera ) );    
    // axes
    scene.add( new THREE.AxisHelper( 20 ) );

    // geometry
    var geometry = new THREE.SphereGeometry( 5, 12, 8 );
    
    // material
    var material = new THREE.MeshPhongMaterial( {
        color: 0x00ffff, 
        shading: THREE.SmoothShading,
    } );
    
    // mesh
    mesh = new THREE.Mesh( geometry, material );
    mesh.castShadow = true;
    scene.add( mesh );

    var planeMaterial = new THREE.MeshPhongMaterial( {
        color: 0xffff00, 
        shading: THREE.FlatShading,
    } );

    plane = new THREE.Mesh( new THREE.PlaneGeometry( 20, 20 ), planeMaterial );
    plane.position.y = -20;
    plane.rotation.x = -Math.PI / 2;
    plane.receiveShadow = true;
    
    scene.add( plane );
    
}

function animate() {

    var delta = Date.now() * 0.001;
   ...