GT2/Ejectable/node_modules/compare-versions/index.js

116 lines
3.0 KiB
JavaScript

/* global define */
(function (root, factory) {
/* istanbul ignore next */
if (typeof define === 'function' && define.amd) {
define([], factory);
} else if (typeof exports === 'object') {
module.exports = factory();
} else {
root.compareVersions = factory();
}
}(this, function () {
var semver = /^v?(?:\d+)(\.(?:[x*]|\d+)(\.(?:[x*]|\d+)(\.(?:[x*]|\d+))?(?:-[\da-z\-]+(?:\.[\da-z\-]+)*)?(?:\+[\da-z\-]+(?:\.[\da-z\-]+)*)?)?)?$/i;
function indexOrEnd(str, q) {
return str.indexOf(q) === -1 ? str.length : str.indexOf(q);
}
function split(v) {
var c = v.replace(/^v/, '').replace(/\+.*$/, '');
var patchIndex = indexOrEnd(c, '-');
var arr = c.substring(0, patchIndex).split('.');
arr.push(c.substring(patchIndex + 1));
return arr;
}
function tryParse(v) {
return isNaN(Number(v)) ? v : Number(v);
}
function validate(version) {
if (typeof version !== 'string') {
throw new TypeError('Invalid argument expected string');
}
if (!semver.test(version)) {
throw new Error('Invalid argument not valid semver (\''+version+'\' received)');
}
}
function compareVersions(v1, v2) {
[v1, v2].forEach(validate);
var s1 = split(v1);
var s2 = split(v2);
for (var i = 0; i < Math.max(s1.length - 1, s2.length - 1); i++) {
var n1 = parseInt(s1[i] || 0, 10);
var n2 = parseInt(s2[i] || 0, 10);
if (n1 > n2) return 1;
if (n2 > n1) return -1;
}
var sp1 = s1[s1.length - 1];
var sp2 = s2[s2.length - 1];
if (sp1 && sp2) {
var p1 = sp1.split('.').map(tryParse);
var p2 = sp2.split('.').map(tryParse);
for (i = 0; i < Math.max(p1.length, p2.length); i++) {
if (p1[i] === undefined || typeof p2[i] === 'string' && typeof p1[i] === 'number') return -1;
if (p2[i] === undefined || typeof p1[i] === 'string' && typeof p2[i] === 'number') return 1;
if (p1[i] > p2[i]) return 1;
if (p2[i] > p1[i]) return -1;
}
} else if (sp1 || sp2) {
return sp1 ? -1 : 1;
}
return 0;
};
var allowedOperators = [
'>',
'>=',
'=',
'<',
'<='
];
var operatorResMap = {
'>': [1],
'>=': [0, 1],
'=': [0],
'<=': [-1, 0],
'<': [-1]
};
function validateOperator(op) {
if (typeof op !== 'string') {
throw new TypeError('Invalid operator type, expected string but got ' + typeof op);
}
if (allowedOperators.indexOf(op) === -1) {
throw new TypeError('Invalid operator, expected one of ' + allowedOperators.join('|'));
}
}
compareVersions.validate = function(version) {
return typeof version === 'string' && semver.test(version);
}
compareVersions.compare = function (v1, v2, operator) {
// Validate operator
validateOperator(operator);
// since result of compareVersions can only be -1 or 0 or 1
// a simple map can be used to replace switch
var res = compareVersions(v1, v2);
return operatorResMap[operator].indexOf(res) > -1;
}
return compareVersions;
}));