Preserve QExcell hidden rows and columns in XLSX

src/io/excellOffice.test.ts

@@ -25,6 +25,8 @@ import {
   worksheetXmlToCellFormats,
   worksheetXmlToColumnWidths,
   worksheetXmlToFrozenPane,
+  worksheetXmlToHiddenColumns,
+  worksheetXmlToHiddenRows,
   worksheetXmlToHyperlinks,
   worksheetXmlToMergedCells,
   worksheetXmlToRowHeights,
@@ -912,6 +914,62 @@ describe("excellOffice OOXML helpers", () => {
     expect(imported.sheets[0].rowHeights).toEqual({ "1": 24, "4": 30.5 });
   });
 
+  it("читает и записывает скрытые колонки и строки XLSX", async () => {
+    expect(
+      worksheetXmlToHiddenColumns({
+        worksheet: {
+          cols: {
+            col: [
+              { min: "2", max: "3", hidden: "1" },
+              { min: "5", max: "5", width: "12", hidden: "true" }
+            ]
+          }
+        }
+      })
+    ).toEqual({ B: true, C: true, E: true });
+    expect(
+      worksheetXmlToHiddenRows({
+        worksheet: {
+          sheetData: {
+            row: [{ r: "4", hidden: "1" }, { r: "6", ht: "21", hidden: "true" }]
+          }
+        }
+      })
+    ).toEqual({ "4": true, "6": true });
+    expect(buildColumnWidthsXml({ E: 12 }, { B: true, C: true, E: true })).toBe(
+      '<cols><col min="2" max="2" hidden="1"/><col min="3" max="3" hidden="1"/><col min="5" max="5" width="12" customWidth="1" hidden="1"/></cols>'
+    );
+
+    const blob = await exportXlsxBlob({
+      id: "book-1",
+      title: "Hidden rows and columns.xlsx",
+      updatedAt: "2026-06-01T00:00:00.000Z",
+      activeSheet: "sheet-1",
+      sheets: [
+        {
+          id: "sheet-1",
+          name: "Hidden",
+          columnWidths: { E: 12 },
+          rowHeights: { "6": 21 },
+          hiddenColumns: { B: true, C: true, E: true },
+          hiddenRows: { "4": true, "6": true },
+          cells: { A1: "Visible" }
+        }
+      ]
+    });
+    const zip = await JSZip.loadAsync(await blob.arrayBuffer());
+    const sheetXml = (await zip.file("xl/worksheets/sheet1.xml")?.async("string")) ?? "";
+    const imported = await importXlsxFile(new File([blob], "Hidden rows and columns.xlsx", { type: blob.type }));
+
+    expect(sheetXml).toContain(
+      '<cols><col min="2" max="2" hidden="1"/><col min="3" max="3" hidden="1"/><col min="5" max="5" width="12" customWidth="1" hidden="1"/></cols>'
+    );
+    expect(sheetXml).toContain('<row r="4" hidden="1"/>');
+    expect(sheetXml).toContain('<row r="6" ht="21" customHeight="1" hidden="1"/>');
+    expect(imported.sheets[0].hiddenColumns).toEqual({ B: true, C: true, E: true });
+    expect(imported.sheets[0].hiddenRows).toEqual({ "4": true, "6": true });
+  });
+
   it("создает OOXML chart part для диаграммы XLSX", () => {
     const xml = buildChartXml(
       {