fix for compiling with es6+

src/mol-canvas3d/canvas3d.ts

@@ -315,6 +315,10 @@ namespace Canvas3D {
         let y = 0;
         let width = 128;
         let height = 128;
+
+        let forceNextRender = false;
+        let currentTime = 0;
+
         updateViewport();
         const scene = Scene.create(webgl, passes.draw.dpoitEnabled ? GraphicsRenderVariantsDpoit : (passes.draw.wboitEnabled ? GraphicsRenderVariantsWboit : GraphicsRenderVariantsBlended));
 
@@ -460,9 +464,7 @@ namespace Canvas3D {
             return didRender;
         }
 
-        let forceNextRender = false;
         let forceDrawAfterAllCommited = false;
-        let currentTime = 0;
         let drawPaused = false;
 
         function draw(options?: { force?: boolean }) {

src/mol-util/input/input-observer.ts

@@ -874,8 +874,8 @@ namespace InputObserver {
             }
         }
 
-        const cross = addCross();
         const crossWidth = 30;
+        const cross = addCross();
 
         function addCross() {
             const cross = document.createElement('div');