Update LOD.d.ts

src/objects/LOD.d.ts

@@ -12,8 +12,10 @@ export class LOD extends Object3D {
 	levels: { distance: number; object: Object3D }[];
 	autoUpdate: boolean;
 	readonly isLOD: true;
+	readonly _currentLevel: 0;
 
 	addLevel( object: Object3D, distance?: number ): this;
+	getCurrentLevel(): number;
 	getObjectForDistance( distance: number ): Object3D | null;
 	raycast( raycaster: Raycaster, intersects: Intersection[] ): void;
 	update( camera: Camera ): void;