factorial of a given number in JavaScript?

function calculateFactorial(number) {
    if (number < 0) return "Undefined";
    return number === 0 || number === 1 ? 1 : Array.from({ length: number }, (_, i) => i + 1).reduce((acc, curr) => acc * curr, 1);
}

const numberToCalculate = 5;
console.log(`The factorial of ${numberToCalculate} is: ${calculateFactorial(numberToCalculate)}`);