:fix: rowSpan can't work when column index out of range

demo/32-merge-and-shade-table-cells.ts

@@ -287,6 +287,7 @@ const table7 = new Table({
                 }),
                 new TableCell({
                     children: [new Paragraph("0,3")],
+                    rowSpan: 3,
                 }),
             ],
         }),
@@ -296,9 +297,6 @@ const table7 = new Table({
                     children: [new Paragraph("1,0")],
                     columnSpan: 2,
                 }),
-                new TableCell({
-                    children: [new Paragraph("1,3")],
-                }),
             ],
         }),
         new TableRow({
@@ -311,9 +309,6 @@ const table7 = new Table({
                     children: [new Paragraph("2,2")],
                     rowSpan: 2,
                 }),
-                new TableCell({
-                    children: [new Paragraph("2,3")],
-                }),
             ],
         }),
         new TableRow({

src/file/table/table-row/table-row.spec.ts

@@ -271,7 +271,8 @@ describe("TableRow", () => {
             });
 
             expect(tableRow.columnIndexToRootIndex(8, true)).to.equal(5);
-            expect(() => tableRow.columnIndexToRootIndex(9, true)).to.throw(`cell 'columnIndex' should not great than 8`);
+            // for column 10, just place the new cell at the end of cell
+            expect(tableRow.columnIndexToRootIndex(10, true)).to.equal(5);
         });
     });
 });

src/file/table/table-row/table-row.ts

@@ -83,10 +83,14 @@ export class TableRow extends XmlComponent {
         let colIdx = 0;
         // Offset because properties is also in root.
         let rootIdx = 1;
-        const endRootIndex = allowEndNewCell ? this.root.length : this.root.length - 1;
         while (colIdx <= columnIndex) {
-            if (rootIdx > endRootIndex) {
+            if (rootIdx >= this.root.length) {
-                throw new Error(`cell 'columnIndex' should not great than ${colIdx - 1}`);
+                if (allowEndNewCell) {
+                    // for insert verticalMerge CONTINUE at row end
+                    return this.root.length;
+                } else {
+                    throw new Error(`cell 'columnIndex' should not great than ${colIdx - 1}`);
+                }
             }
             const cell = this.root[rootIdx] as TableCell;
             rootIdx += 1;