Solution Review: Create a Mini DSL

const createFlight = (typeOfFlight: KindOfFlight, date: Date) => (airplane: Airplane): O.Option<Flight> => {
    if (!typeOfFlight || !date || !airplane) {
        return O.none;
    }
    switch (typeOfFlight) {
        case 'ARRIVAL': {
            return O.some({
                type: 'Arrival',
                arrivalTime: date,
                airplane,
            });
        }
        case 'DEPARTURE': {
            return O.some({
                type: 'Departure',
                departureTime: date,
                airplane,
            });
        }
        default:
            const _exhaustiveCheck: never = typeOfFlight;
            return _exhaustiveCheck;
    }
};
console.log(createFlight("ARRIVAL",new Date())({seats:100}));