I am getting this error 
While trying to load kendo spreadsheet
                                SpreadsheetComponent.js
Module parse failed: Unexpected token (70877:38)
You may need an appropriate loader to handle this file type.
|             let ref = sheet.activeCell();
|             let range = new Range$1(ref, sheet);
|             this.trigger('message', { ...options, name, ref, range });
|         }.bind(this));
|     }

