JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdn.jsdelivr.net/npm/three@0.118/build/three.min.js"></script>

CSS

body {
	  margin: 0;
}

JavaScript

var camera, scene, renderer;
var geometry, material, mesh;

var defaultRotation = new THREE.Quaternion(); // default rotation

init();
animate();

function init() {

    camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.01, 10 );
    camera.position.z = 5;

    scene = new THREE.Scene();

    geometry = new THREE.ConeBufferGeometry( 0.2, 1 );
		geometry.rotateX( Math.PI * 0.5 );
    material = new THREE.MeshNormalMaterial();

    mesh = new THREE.Mesh( geometry, material );
    scene.add( mesh );
		
		scene.add( new THREE.AxesHelper() );

    renderer = new THREE.WebGLRenderer( { antialias: true } );
    renderer.setSize( window.innerWidth, window.innerHeight );
    document.body.appendChild( renderer.domElement );

}

function animate() {

    requestAnimationFrame( animate );
		
    mesh.rotateY( 0.01 );
		
		var angle = defaultRotation.angleTo( mesh.quaternion );
		
		console.log( THREE.Math.radToDeg( angle ) );
		
    renderer.render( scene, camera );

}