build fixes

Viewer/src/model/modelAnimation.ts

@@ -1,4 +1,4 @@
-import { AnimationGroup, Animatable, Skeleton, IDisposable } from "babylonjs";
+import { AnimationGroup, Animatable, Skeleton } from "babylonjs";
 
 export enum AnimationPlayMode {
     ONCE,
@@ -13,7 +13,7 @@ export enum AnimationState {
     ENDED
 }
 
-export interface IModelAnimation extends IDisposable {
+export interface IModelAnimation {
     readonly state: AnimationState;
     readonly name: string;
     readonly frames: number;
@@ -27,6 +27,7 @@ export interface IModelAnimation extends IDisposable {
     reset();
     restart();
     goToFrame(frameNumber: number);
+    dispose();
 }
 
 export class GroupModelAnimation implements IModelAnimation {

Viewer/src/model/viewerModel.ts

@@ -100,7 +100,7 @@ export class ViewerModel implements IDisposable {
                 })
             } else {
                 skeletons.forEach((skeleton, idx) => {
-                    let ag = new BABYLON.AnimationGroup("animation-" + idx, this._scene);
+                    let ag = new AnimationGroup("animation-" + idx, this._scene);
                     skeleton.getAnimatables().forEach(a => {
                         if (a.animations[0]) {
                             ag.addTargetedAnimation(a.animations[0], a);

Viewer/src/viewer/defaultViewer.ts

@@ -246,7 +246,7 @@ export class DefaultViewer extends AbstractViewer {
         super.configureLights(lightsConfiguration, model);
         // labs feature - flashlight
         if (this.configuration.lab && this.configuration.lab.flashlight) {
-            let pointerPosition = BABYLON.Vector3.Zero();
+            let pointerPosition = Vector3.Zero();
             let lightTarget;
             let angle = 0.5;
             let exponent = Math.PI / 2;

Viewer/src/viewer/viewerManager.ts

@@ -12,6 +12,7 @@ export class ViewerManager {
     constructor() {
         this.viewers = {};
         this.onViewerAddedObservable = new Observable();
+        this.onViewerRemovedObservable = new Observable();
     }
 
     public addViewer(viewer: AbstractViewer) {