cleanup of export docs

src/ts/gridSerializer.ts

@@ -243,22 +243,23 @@ export class GridSerializer {
         }
 
         // first pass, put in the header names of the cols
-        if (!skipHeader || columnGroups) {
+        if (columnGroups) {
             let groupInstanceIdCreator: GroupInstanceIdCreator = new GroupInstanceIdCreator();
             let displayedGroups: ColumnGroupChild[] = this.displayedGroupCreator.createDisplayedGroups(
                 columnsToExport,
                 this.columnController.getGridBalancedTree(),
                 groupInstanceIdCreator
             );
-            if (columnGroups && displayedGroups.length > 0 && displayedGroups[0] instanceof ColumnGroup) {
+            if (displayedGroups.length > 0 && displayedGroups[0] instanceof ColumnGroup) {
                 let gridRowIterator: RowSpanningAccumulator = gridSerializingSession.onNewHeaderGroupingRow();
                 let columnIndex: number = 0;
-                displayedGroups.forEach((it:ColumnGroupChild)=>{
-                    let casted:ColumnGroup = it as ColumnGroup;
-                    let definition = casted.getDefinition();
-                    gridRowIterator.onColumn(definition != null ? definition.headerName : '', columnIndex ++, casted.getChildren().length - 1);
+                displayedGroups.forEach((columnGroupChild: ColumnGroupChild) => {
+                    let columnGroup: ColumnGroup = columnGroupChild as ColumnGroup;
+                    let colDef = columnGroup.getDefinition();
+                    gridRowIterator.onColumn(colDef != null ? colDef.headerName : '', columnIndex++, columnGroup.getChildren().length - 1);
                 });
             }
+        }
 
         if (!skipHeader){
             let gridRowIterator = gridSerializingSession.onNewHeaderRow();
@@ -266,7 +267,6 @@ export class GridSerializer {
                 gridRowIterator.onColumn (column, index, null)
             });
         }
-        }
 
         this.floatingRowModel.forEachFloatingTopRow(processRow);