| 'use strict'; |
| const cmp = require('semver/functions/cmp'); |
| const semver = require('semver/functions/coerce'); |
| |
| const has = Function.call.bind({}.hasOwnProperty); |
| |
| function compare(a, operator, b) { |
| return cmp(semver(a), operator, semver(b)); |
| } |
| |
| function intersection(list, order) { |
| const set = list instanceof Set ? list : new Set(list); |
| return order.filter(name => set.has(name)); |
| } |
| |
| function sortObjectByKey(object, fn) { |
| return Object.keys(object).sort(fn).reduce((memo, key) => { |
| memo[key] = object[key]; |
| return memo; |
| }, {}); |
| } |
| |
| module.exports = { |
| compare, |
| has, |
| intersection, |
| semver, |
| sortObjectByKey, |
| }; |
