Function recurseColumns

packages/table-core/src/core/table.ts:449–468

(
          columnDefs: ColumnDef<TData, unknown>[],
          parent?: Column<TData, unknown>,
          depth = 0
        )

      () => [table._getColumnDefs()],
      columnDefs => {
        const recurseColumns = (
          columnDefs: ColumnDef<TData, unknown>[],
          parent?: Column<TData, unknown>,
          depth = 0
        ): Column<TData, unknown>[] => {
          return columnDefs.map(columnDef => {
            const column = createColumn(table, columnDef, depth, parent)

            const groupingColumnDef = columnDef as GroupColumnDef<
              TData,
              unknown
            >

            column.columns = groupingColumnDef.columns
              ? recurseColumns(groupingColumnDef.columns, column, depth + 1)
              : []

            return column
          })
        }

        return recurseColumns(columnDefs)
      },