Map/Reduce Tuples to Tuples in Typescript
If you use map/reduce to process your Tuples, you will find it errors out in Typescript.
type Point = [number, number]; const point: Point = [0, 1]; const shifted: Point = point.map(a => a + 1);
You will need to cast your result as a type.
const shifted: Point = point.map<Point>(a => a + 1);
This method allows you to check the result as a Point. The type checks properly.
const shifted: Point = point.map(a => a + 1) as Point;
Casting the result as a Tuple also works.