anchor.diff:          reader = new GltfReader(controller.stream);
         } else {
           write("<strong>${file.name}: Unknown file extension.</strong><br>");
  -        continue;
  +        if (iterator.moveNext()) handleFile(iterator.current);
         }
   
         int index = 0;
  
positive.code:     e.preventDefault();
    });
  
    dropZone.onDrop.listen((MouseEvent e) async {
      e.preventDefault();
      output.text = "";
      dropZone.classes.remove('hover');
      dropZone.classes.add('drop');
  
      for (final file in e.dataTransfer.files) {
        final controller = new StreamController<List<int>>();
        GltfReader reader;
        if (file.name.endsWith(".glb")) {
  
negative.code:       handleNextChunk(file);
  
        try {
          reader.root.then((_) {
            write(reader.context);
            if (iterator.moveNext()) handleFile(iterator.current);
          });
        } on Context catch (e) {
          // Failed before Gltf.fromMap call
          write(e);
          if (iterator.moveNext()) handleFile(iterator.current);
        }
      }
  
      if (iterator.moveNext()) handleFile(iterator.current);
      dropZone.classes.remove('drop');
    });
  }
  