var -> let

src/GLModel.ts

@@ -268,6 +268,7 @@ export class GLModel {
         }
         return bestv;
     };
+    
 
     //from atom, return a normalized vector v that is orthogonal and along which
     //it is appropraite to draw multiple bonds
@@ -280,6 +281,7 @@ export class GLModel {
         var v = null;
         dir.sub(p1);
 
+
         if (atom.bonds.length === 1) {
             if (atom2.bonds.length === 1) {
                 v = dir.clone();

src/WebGL/core/Geometry.ts

@@ -227,7 +227,7 @@ export class GeometryGroup {
 
       ret += indent + " coordIndex [\n";
       if(material.wireframe && this.faceArray) {
-        for (var i = 0; i < this.faceidx; i += 3) {
+        for (let i = 0; i < this.faceidx; i += 3) {
           x = this.faceArray?.[i];
           y = this.faceArray?.[i + 1];
           z = this.faceArray?.[i + 2];
@@ -293,7 +293,7 @@ export class GeometryGroup {
 
       //faces
       ret += indent + " coordIndex [\n";
-      for (var i = 0; i < this.faceidx; i += 3) {
+      for (let i = 0; i < this.faceidx; i += 3) {
         x = this.faceArray?.[i];
         y = this.faceArray?.[i + 1];
         z = this.faceArray?.[i + 2];

viewer.html

@@ -107,4 +107,4 @@
     <div id='gldiv' style="width: 100%; height: 100vh;"></div>
 </body>
 
-</html>
+</html>