Function getYValue

src/ui-react-dom-charts/common/data.ts:425–428

(
  cell: CellOrUndefined | ResultCellOrUndefined,
)

        : undefined;

const getYValue = (
  cell: CellOrUndefined | ResultCellOrUndefined,
): number | undefined =>
  isNumber(cell) && isFiniteNumber(cell) ? cell : undefined;