- var isDate = require('../lang/isDate');
 
-     /**
 
-      * checks if it's a leap year
 
-      */
 
-     function isLeapYear(fullYear){
 
-         if (isDate(fullYear)) {
 
-             fullYear = fullYear.getFullYear();
 
-         }
 
-         return fullYear % 400 === 0 || (fullYear % 100 !== 0 && fullYear % 4 === 0);
 
-     }
 
-     module.exports = isLeapYear;
 
 
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