text: import gridCore from "./ui.data_grid.core";
  import columnsControllerModule from "../grid_core/ui.grid_core.columns_controller";
  import { extend } from "../../core/utils/extend";
  
  gridCore.registerModule("columns", {
      defaultOptions: function() {
          return extend(true, {}, columnsControllerModule.defaultOptions(), {
              /**
              * @name dxDataGridColumn.allowExporting
              * @type boolean
              * @default true
              */
              commonColumnSettings: {
                  allowExporting: true
              }
          });
      },
      controllers: columnsControllerModule.controllers
  });
  