JSFiddle - React, Tailwind, and code Playground

HTML

<canvas id="canvas-element" width="640" height="360"></canvas>

<script type="importmap">
  {
    "imports": {
      "three": "https://unpkg.com/[email protected]/build/three.module.js",
      "three/addons/": "https://unpkg.com/[email protected]/examples/jsm/"
    }
  }
</script>

JavaScript

import * as THREE from 'three';
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';

const canvasElement = document.getElementById('canvas-element');

const scene = new THREE.Scene();
const camera = new THREE.PerspectiveCamera(75, canvasElement.width/canvasElement.height);
camera.position.set(2, 2, 2);
const renderer = new THREE.WebGLRenderer({
  antialias: true,
	canvas: canvasElement,
});
renderer.shadowMap.enabled = true;
const controls = new OrbitControls(camera, canvasElement);

function animate() {
	requestAnimationFrame(animate);
  
  renderer.render(scene, camera);
}

const light = new THREE.DirectionalLight();
light.position.set(1, 1, 1);
light.castShadow = true;

scene.add(light);

const boxGeo = new THREE.BoxGeometry(1, 1, 0.01);
const boxMat = new THREE.MeshLambertMaterial({
	color: 0x00ff00,
});
const box = new THREE.Mesh(boxGeo, boxMat);
box.castShadow = true;
box.receiveShadow = true;

scene.add(box);

animate();