odin-default-js-exercises/leapYears/leapYears.js

const leapYears = function(year) {
   if(year%400==0)
   return true;
   else if(year%100==0)
   return false;
   else if(year%4==0)
   return true;
   else 
   return false;
}

module.exports = leapYears