old_contents: define(['./powergrid', './arraydatasource', './jsondatasource', './datasources/groupingdatasource', './datasources/sortingdatasource'],
      function (PowerGrid, ArrayDataSource, JsonDataSource, GroupingDataSource, SortingDataSource) {
          return {
              PowerGrid: PowerGrid,
              ArrayDataSource: ArrayDataSource,
              JsonDataSource: JsonDataSource,
              GroupingDataSource: GroupingDataSource,
              SortingDataSource: SortingDataSource,
              FilteringDataSource: FilteringDataSource
          };
      });
  
new_contents: define(['./powergrid', './arraydatasource', './jsondatasource', './datasources/groupingdatasource', './datasources/sortingdatasource', './datasources/filteringdatasource'],
      function (PowerGrid, ArrayDataSource, JsonDataSource, GroupingDataSource, SortingDataSource, FilteringDataSource) {
          return {
              PowerGrid: PowerGrid,
              ArrayDataSource: ArrayDataSource,
              JsonDataSource: JsonDataSource,
              GroupingDataSource: GroupingDataSource,
              SortingDataSource: SortingDataSource,
              FilteringDataSource: FilteringDataSource
          };
      });
  
subject: fix main.js