parkCar function fails to update carSpotMap, causing unparkCar to fail : Typescript

Describe the bug In ParkingLot.ts, the parkCar function successfully parks the vehicle in the Spot object but fails to save the mapping in this.carSpotMap.(Typescript)

To Reproduce

1. Create a ParkingLot instance.
2. Park a car using lot.parkCar(vehicle).
3. Try to unpark the same car using lot.unparkCar(vehicle).

Expected behavior The car should be unparked successfully.

Actual behavior The system throws an Error: "Car is not Parked" because the map lookup returns undefined.

Suggested Fix Add this line in ParkingLot.ts inside the parkCar method: this.carSpotMap[vehicle.getNumber()] = availableSpot;