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- const SemVer = require('../classes/semver')
- const Range = require('../classes/range')
- const gt = require('../functions/gt')
-
- const minVersion = (range, loose) => {
- range = new Range(range, loose)
-
- let minver = new SemVer('0.0.0')
- if (range.test(minver)) {
- return minver
- }
-
- minver = new SemVer('0.0.0-0')
- if (range.test(minver)) {
- return minver
- }
-
- minver = null
- for (let i = 0; i < range.set.length; ++i) {
- const comparators = range.set[i]
-
- comparators.forEach((comparator) => {
- // Clone to avoid manipulating the comparator's semver object.
- const compver = new SemVer(comparator.semver.version)
- switch (comparator.operator) {
- case '>':
- if (compver.prerelease.length === 0) {
- compver.patch++
- } else {
- compver.prerelease.push(0)
- }
- compver.raw = compver.format()
- /* fallthrough */
- case '':
- case '>=':
- if (!minver || gt(minver, compver)) {
- minver = compver
- }
- break
- case '<':
- case '<=':
- /* Ignore maximum versions */
- break
- /* istanbul ignore next */
- default:
- throw new Error(`Unexpected operation: ${comparator.operator}`)
- }
- })
- }
-
- if (minver && range.test(minver)) {
- return minver
- }
-
- return null
- }
- module.exports = minVersion
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