£Á°èZ¨Ä…–K§‚«“ô4“ÒÙ´dîfUÙÃÅ WKbyÊ¦•êŽ…È®FÒ¿ÊÎóCozá¬S@6{Í:›œêZÌ:Š•_%:¢¾¾~;‘Ã~èŠ©ÊÇí`ÔÑ©úë™µ'5I¿fš×WO%ø9¾«¾DK|€ùÍD”Ýs]nHÕ¶ê×Ó¼ãžªéUWŸÈË%DÒÕ¬ï‘]/Åcx  ‰ï2ß]ä6G[]S£ÔÏ¯rs{úëóµmÒï#UQxo·õÞCe]"±/aÙ&Eã4ú9Jé_ÞåëdãöKë)AÞ                  ¯¹ægƒÛowÐø^d™ý½ßB7áyMä9ÜÖUã
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
<html>
'use strict';
var semver = require('semver');

module.exports = function (a, b) {
	if (semver.gt(a, b)) {
		return null;
	}

	a = semver.parse(a);
	b = semver.parse(b);

	for (var key in a) {
		if (key === 'major' || key === 'minor' || key === 'patch') {
			if (a[key] !== b[key]) {
				return key;
			}
		}

		if (key === 'prerelease' || key === 'build') {
			if (JSON.stringify(a[key]) !== JSON.stringify(b[key])) {
				return key;
			}
		}
	}

	return null;
};