fix(common): skip content resize when DataView has no items

packages/common/src/services/__tests__/resizer.service.spec.ts

@@ -1,3 +1,5 @@
+/// <reference types="node" />
+
 import { EventPubSubService } from '@slickgrid-universal/event-pub-sub';
 import { afterEach, beforeEach, describe, expect, it, vi, type Mock } from 'vitest';
 import { SlickEvent, type SlickDataView, type SlickGrid } from '../../core/index.js';
@@ -680,6 +682,20 @@ describe('Resizer Service', () => {
         expect(mockColDefs[1].width).toBe(56); // longest word "Destinee" (length 8 * charWidth(7) * ratio(0.88)) + cellPadding(6) = 55.28 ceil to => 56
       });
 
+      it('should leave the column unchanged when the DataView has no accessible items', () => {
+        const reRenderSpy = vi.spyOn(gridStub, 'reRenderColumns');
+        const initialWidth = 120;
+        mockColDefs[1].width = initialWidth;
+        vi.spyOn(mockDataView, 'getItems').mockReturnValue([]);
+
+        mockGridOptions.enableColumnResizeOnDoubleClick = true;
+        service.init(gridStub, divContainer);
+        gridStub.onColumnsResizeDblClick.notify({ triggeredByColumn: 'firstName', grid: gridStub });
+
+        expect(reRenderSpy).not.toHaveBeenCalled();
+        expect(mockColDefs[1].width).toBe(initialWidth);
+      });
+
       it('should call handleSingleColumnResizeByContent when "onHeaderMenuColumnResizeByContent" gets triggered but expect a resized column width when left section width becomes greater than full viewport width', () => {
         const viewportLeft = document.createElement('div');
         viewportLeft.className = 'slick-viewport-left';

packages/common/src/services/resizer.service.ts

@@ -668,6 +668,15 @@ export class ResizerService {
   }
 
   protected handleSingleColumnResizeByContent(columnId: string): void {
+    // A custom DataView might not expose all rows through getItems() (for example, a windowed
+    // DataView can intentionally return an empty array). In that case we cannot calculate a
+    // content width, so leave the current column width unchanged and let the consumer provide
+    // its own resize handler if it can fetch the rows asynchronously.
+    const dataItems = this.dataView?.getItems?.();
+    if (!Array.isArray(dataItems) || dataItems.length === 0) {
+      return;
+    }
+
     const columns = this._grid.getColumns();
     const columnDefIdx = columns.findIndex((col) => col.id === columnId);