Function unionRanges

unionRanges(a: RangeCoords, b: RangeCoords, reuse?: RangeCoords): RangeCoords
Finds the union of 2 ranges.
Parameters
- a: RangeCoords
- b: RangeCoords
- Optionalreuse: RangeCoords
Returns RangeCoords
Remarks
This is null safe.