2 var semver = require('semver');
4 module.exports = function (a, b) {
13 if (key === 'major' || key === 'minor' || key === 'patch') {
14 if (a[key] !== b[key]) {
19 if (key === 'prerelease' || key === 'build') {
20 if (JSON.stringify(a[key]) !== JSON.stringify(b[key])) {