chore: update logic

Author: linxianxi

src/VirtualTable/VirtualRow.tsx

@@ -31,19 +31,18 @@ export default function VirtualRow({
     scrollLeft,
   );
 
-  return showColumnIndexes
-    .map(idx => flattenColumns[idx])
-    .map((column, idx) => {
-      const colIndex = showColumnIndexes[idx];
-      return (
+  return showColumnIndexes.reduce(
+    (total, colIndex) =>
+      total.concat(
         <VirtualCell
           key={colIndex}
-          column={column}
+          column={flattenColumns[colIndex]}
           colIndex={colIndex}
           style={startIndex === colIndex ? { marginLeft: virtualOffset } : {}}
           cellProps={cellPropsCollections[colIndex]}
           {...restProps}
-        />
-      );
-    });
+        />,
+      ),
+    [],
+  );
 }