Fix: ColReorder would throw an error after a row had been deleted

Error occurred due to not correctly handling DataTables 2's sparse array

https://datatables.net/forums/discussion/78930

js/functions.ts

@@ -165,22 +165,31 @@ export function move(dt: Api, from: number[], to: number): void {
 	// Per row manipulations
 	for (i = 0; i < settings.aoData.length; i++) {
 		var data = settings.aoData[i];
+
+		// Allow for sparse array
+		if (! data) {
+			continue;
+		}
+
 		var cells = data.anCells;
 
-		if (cells) {
-			// Array of cells
-			arrayMove(cells, from[0], from.length, to);
+		// Not yet rendered
+		if (! cells) {
+			continue;
+		}
+
+		// Array of cells
+		arrayMove(cells, from[0], from.length, to);
 
-			for (j = 0; j < cells.length; j++) {
-				// Reinsert into the document in the new order
-				if (data.nTr && cells[j] && columns[j].bVisible) {
-					data.nTr.appendChild(cells[j]);
-				}
+		for (j = 0; j < cells.length; j++) {
+			// Reinsert into the document in the new order
+			if (data.nTr && cells[j] && columns[j].bVisible) {
+				data.nTr.appendChild(cells[j]);
+			}
 
-				// Update lookup index
-				if (cells[j] && cells[j]._DT_CellIndex) {
-					cells[j]._DT_CellIndex.column = j;
-				}
+			// Update lookup index
+			if (cells[j] && cells[j]._DT_CellIndex) {
+				cells[j]._DT_CellIndex.column = j;
 			}
 		}
 	}