Adapt it to work with newest THREE.js and BufferGeometries:

HermiteCurve3.js

@@ -2,7 +2,7 @@
 //tension: 1 high, 0 normal, -1 low
 //bias: 0 is even, positive is towards first segment, negative towards the other
 
-THREE.Curve.Utils.hermiteInterpolate = function (p0, p1, p2, p3, t, tension, bias) {
+var _hermiteInterpolate =  (p0, p1, p2, p3, t, tension, bias) => {
 	var m0 = (p1 - p0) * (1 + bias) * (1 - tension) / 2 
 	       + (p2 - p1) * (1 - bias) * (1 - tension) / 2;
 
@@ -45,9 +45,9 @@ THREE.HermiteCurve3 = THREE.Curve.create(
 
 		var vector = new THREE.Vector3();
 
-		vector.x = THREE.Curve.Utils.hermiteInterpolate( point0.x, point1.x, point2.x, point3.x, weight, this.tension, this.bias );
-		vector.y = THREE.Curve.Utils.hermiteInterpolate( point0.y, point1.y, point2.y, point3.y, weight, this.tension, this.bias );
-		vector.z = THREE.Curve.Utils.hermiteInterpolate( point0.z, point1.z, point2.z, point3.z, weight, this.tension, this.bias );
+		vector.x = _hermiteInterpolate( point0.x, point1.x, point2.x, point3.x, weight, this.tension, this.bias );
+		vector.y = _hermiteInterpolate( point0.y, point1.y, point2.y, point3.y, weight, this.tension, this.bias );
+		vector.z = _hermiteInterpolate( point0.z, point1.z, point2.z, point3.z, weight, this.tension, this.bias );
 
 		return vector;
 	}

index.html

@@ -52,7 +52,7 @@
 		</div>
 		<div id="container"></div>
 
-		<script src="three.js"></script>
+		<script src="https://unpkg.com/three/build/three.min.js"></script>
 		<script src="orbit-controls.js"></script>
 		<script src="js-struct.js"></script>
 		<script src="HermiteCurve3.js"></script>

orbit-controls.js

@@ -121,7 +121,7 @@ THREE.OrbitControls = function ( object, domElement ) {
 	// so camera.up is the orbit axis
 
 	var quat = new THREE.Quaternion().setFromUnitVectors( object.up, new THREE.Vector3( 0, 1, 0 ) );
-	var quatInverse = quat.clone().inverse();
+	var quatInverse = quat.clone().invert();
 
 	// events