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