Make the mesh follow the mouse

app.js

  onMouseMove(event) {
    this.mouse.x = (event.clientX / window.innerWidth) * 2 - 1;
    this.mouse.y = - (event.clientY / window.innerHeight) * 2 + 1;
  
   // Make the sphere follow the mouse
    var vector = new THREE.Vector3(this.mouse.x, this.mouse.y, 0.5);
    vector.unproject( this.camera );
    var dir = vector.sub( this.camera.position ).normalize();
    var distance = - this.camera.position.z / dir.z;
    var pos = this.camera.position.clone().add( dir.multiplyScalar( distance ) );
    this.mesh.position.copy(pos);
    
    // Make the sphere follow the mouse
  //	mouseMesh.position.set(event.clientX, event.clientY, 0);
  }