Cannot use updateRow or updateRows method to add add rows with children

[paul121]

When using updateRow or updateRows to add rows with child rows it seems that these are not correctly added.. I get a row label of undefined and then when adding tasks for these rows via updateTasks I get the following error:

TypeError: Cannot read properties of undefined (reading 'y')

It seems that the y value might not be set for these new rows?

Adding child rows does work when using gantt.$set({rows}). I also tested adding these rows all as parent/top-level rows via updateRow and updateRows and they worked fine, all tasks were added correctly with updateTasks.

I see that the updateRow and updateRows methods call rowFactory.createRow(model, null) where null is the Y value:

svelte-gantt/packages/svelte-gantt/src/Gantt.svelte

Lines 676 to 683 in 773a6a9

	export function updateRow(model) {
	const row = rowFactory.createRow(model, null);
	rowStore.upsert(row);
	}
	export function updateRows(rowModels) {
	const rows = rowModels.map(model => rowFactory.createRow(model, null));
	rowStore.upsertAll(rows);

But the initRows logic is different calls rowFactory.createRows(rows):

svelte-gantt/packages/svelte-gantt/src/Gantt.svelte

Lines 461 to 465 in 773a6a9

	function initRows(rowsData) {
	//Bug: Running twice on change options
	const rows = rowFactory.createRows(rowsData);
	rowStore.addAll(rows);
	}

It seems that rowFactory.createRows is the only method that ever calls rowFactory.createChildRows:

svelte-gantt/packages/svelte-gantt/src/core/row.ts

Lines 59 to 65 in 773a6a9

	createRows(rows: RowModel[]) {
	const ctx = { y: 0, result: [] };
	this.createChildRows(rows, ctx);
	return ctx.result;
	}
	createChildRows(

[ANovokmet]

Thank you. This is about to be fixed in v4.4.1