Checking and getting leap years in pure Node.js

leapyears.js

//Check if parameter yr is a leap year.
var isLeapYear = function(yr) {
    return (((yr % 4 === 0) && (yr % 100 !== 0)) || (yr % 400 === 0));
};

//Get leap year
// Paramaters:
//    yr - starting year
//    iteration - number of years to print out
//    count - internal variable for tracking
var getLeapYear = function(yr, iteration, count = 0) {

	if (isLeapYear(yr)) {
		count++;
		console.log(yr);
	}

	if (count < iteration) {
		return getLeapYear(yr+1, iteration, count);
	}
	return true;
};

//Demo
var currentYear = new Date().getFullYear();
getLeapYear(currentYear,20);