Piccolo JS Fundamentals

function piccolo(input) {
    let parking = new Map();

    for (let line of input) {
        let [direction, carNumber] = line.split(', ');

        if (direction === 'IN') {
            parking.set(carNumber, true);
        } else {
            parking.delete(carNumber);
        }
    }

    if (parking.size === 0) {
        console.log("Parking Lot is Empty");
    }

    let sortedNumbers = Array.from(parking.keys()).sort((a, b) => a.localeCompare(b));
    console.log(sortedNumbers.join('\n'));
}