Function orderColumns

packages/table-core/src/features/ColumnGrouping.ts:400–422

(
  leafColumns: Column<TData, unknown>[],
  grouping: string[],
  groupedColumnMode?: GroupingColumnMode
)

}

export function orderColumns<TData extends RowData>(
  leafColumns: Column<TData, unknown>[],
  grouping: string[],
  groupedColumnMode?: GroupingColumnMode
) {
  if (!grouping?.length || !groupedColumnMode) {
    return leafColumns
  }

  const nonGroupingColumns = leafColumns.filter(
    col => !grouping.includes(col.id)
  )

  if (groupedColumnMode === 'remove') {
    return nonGroupingColumns
  }

  const groupingColumns = grouping
    .map(g => leafColumns.find(col => col.id === g)!)
    .filter(Boolean)

  return [...groupingColumns, ...nonGroupingColumns]
}