Function hasRow

src/store/index.ts:1546–1547

(tableId: Id, rowId: Id)

    collHas(mapGet(tableCellIds, id(tableId)), id(cellId));

  const hasRow = (tableId: Id, rowId: Id): boolean =>
    collHas(mapGet(tablesMap, id(tableId)), id(rowId));

  const hasCell = (tableId: Id, rowId: Id, cellId: Id): boolean =>
    collHas(mapGet(mapGet(tablesMap, id(tableId)), id(rowId)), id(cellId));