Three.js Render Object with BufferGeometry

function renderMesh(faces, vertices, normals) {
    let camera, scene, renderer;

    let mesh;

    init();
    render();

    function init() {
        camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 2000);
        camera.position.z = 400;

        scene = new THREE.Scene();
        scene.background = new THREE.Color( 0x050505 );

        const light = new THREE.HemisphereLight( 0xffffbb, 0x080820, 1 );
        scene.add( light );

        const geometry = new THREE.BufferGeometry();
        geometry.setIndex( new THREE.Uint32BufferAttribute(faces, 3) );
        geometry.setAttribute( 'position', new THREE.Float32BufferAttribute( vertices, 3 ) );
        geometry.setAttribute( 'normal', new THREE.Float32BufferAttribute( normals, 3 ) );

        const axesHelper = new THREE.AxesHelper( 100 );
        scene.add( axesHelper );

        const material = new THREE.MeshPhongMaterial({
            color: 0xAAAAAA,
            flatShading: true,
            side: THREE.DoubleSide
        });

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

        // Center object
        // See further down at https://threejsfundamentals.org/threejs/lessons/threejs-primitives.html
        geometry.computeBoundingBox();
        geometry.boundingBox.getCenter(mesh.position).multiplyScalar(-1);
        const parent = new THREE.Object3D();
        parent.add(mesh);
        scene.add(parent);
        // Rotate object so the face faces the user
        parent.rotateZ(Math.PI / 2) // Math.PI / 2 = 90° in radian
        parent.rotateX(-Math.PI / 2)

        const box = new THREE.BoxHelper( parent, 0xffff00 );
        scene.add( box );

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


        const controls = new OrbitControls( camera, renderer.domElement );
        controls.addEventListener( 'change', render );
        controls.update();

        window.addEventListener( 'resize', onWindowResize );
    }

    function onWindowResize() {

        camera.aspect = window.innerWidth / window.innerHeight;
        camera.updateProjectionMatrix();

        renderer.setSize( window.innerWidth, window.innerHeight );

    }

    function render() {
        renderer.render( scene, camera );

    }
}