GroupRowModelItem

A group header row in the flattened render model.

Part of the RenderRow discriminated union (discriminant: kind === 'group'). Group rows represent collapsed/expanded group headers in the virtualized row list. They are produced by the grouping engine when groupOn categorizes rows into hierarchical groups.

Example

function isGroup(row: RenderRow): row is GroupRowModelItem {
  return row.kind === 'group';
}

Properties

Property	Type	Description
kind	group	Discriminant — always 'group' for group header rows.
key	string	Composite group key (nested groups separated by `"
value	any	Display value for this group level (the last segment of the group path).
depth	number	Nesting depth (0 = top-level group).
rows	any[]	All data rows belonging to this group (including rows in nested sub-groups).
expanded	boolean	Whether this group is currently expanded (children visible).