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-rw-r--r--backend/node_modules/semver/classes/comparator.js141
-rw-r--r--backend/node_modules/semver/classes/index.js5
-rw-r--r--backend/node_modules/semver/classes/range.js554
-rw-r--r--backend/node_modules/semver/classes/semver.js302
4 files changed, 1002 insertions, 0 deletions
diff --git a/backend/node_modules/semver/classes/comparator.js b/backend/node_modules/semver/classes/comparator.js
new file mode 100644
index 0000000..3d39c0e
--- /dev/null
+++ b/backend/node_modules/semver/classes/comparator.js
@@ -0,0 +1,141 @@
+const ANY = Symbol('SemVer ANY')
+// hoisted class for cyclic dependency
+class Comparator {
+ static get ANY () {
+ return ANY
+ }
+
+ constructor (comp, options) {
+ options = parseOptions(options)
+
+ if (comp instanceof Comparator) {
+ if (comp.loose === !!options.loose) {
+ return comp
+ } else {
+ comp = comp.value
+ }
+ }
+
+ comp = comp.trim().split(/\s+/).join(' ')
+ debug('comparator', comp, options)
+ this.options = options
+ this.loose = !!options.loose
+ this.parse(comp)
+
+ if (this.semver === ANY) {
+ this.value = ''
+ } else {
+ this.value = this.operator + this.semver.version
+ }
+
+ debug('comp', this)
+ }
+
+ parse (comp) {
+ const r = this.options.loose ? re[t.COMPARATORLOOSE] : re[t.COMPARATOR]
+ const m = comp.match(r)
+
+ if (!m) {
+ throw new TypeError(`Invalid comparator: ${comp}`)
+ }
+
+ this.operator = m[1] !== undefined ? m[1] : ''
+ if (this.operator === '=') {
+ this.operator = ''
+ }
+
+ // if it literally is just '>' or '' then allow anything.
+ if (!m[2]) {
+ this.semver = ANY
+ } else {
+ this.semver = new SemVer(m[2], this.options.loose)
+ }
+ }
+
+ toString () {
+ return this.value
+ }
+
+ test (version) {
+ debug('Comparator.test', version, this.options.loose)
+
+ if (this.semver === ANY || version === ANY) {
+ return true
+ }
+
+ if (typeof version === 'string') {
+ try {
+ version = new SemVer(version, this.options)
+ } catch (er) {
+ return false
+ }
+ }
+
+ return cmp(version, this.operator, this.semver, this.options)
+ }
+
+ intersects (comp, options) {
+ if (!(comp instanceof Comparator)) {
+ throw new TypeError('a Comparator is required')
+ }
+
+ if (this.operator === '') {
+ if (this.value === '') {
+ return true
+ }
+ return new Range(comp.value, options).test(this.value)
+ } else if (comp.operator === '') {
+ if (comp.value === '') {
+ return true
+ }
+ return new Range(this.value, options).test(comp.semver)
+ }
+
+ options = parseOptions(options)
+
+ // Special cases where nothing can possibly be lower
+ if (options.includePrerelease &&
+ (this.value === '<0.0.0-0' || comp.value === '<0.0.0-0')) {
+ return false
+ }
+ if (!options.includePrerelease &&
+ (this.value.startsWith('<0.0.0') || comp.value.startsWith('<0.0.0'))) {
+ return false
+ }
+
+ // Same direction increasing (> or >=)
+ if (this.operator.startsWith('>') && comp.operator.startsWith('>')) {
+ return true
+ }
+ // Same direction decreasing (< or <=)
+ if (this.operator.startsWith('<') && comp.operator.startsWith('<')) {
+ return true
+ }
+ // same SemVer and both sides are inclusive (<= or >=)
+ if (
+ (this.semver.version === comp.semver.version) &&
+ this.operator.includes('=') && comp.operator.includes('=')) {
+ return true
+ }
+ // opposite directions less than
+ if (cmp(this.semver, '<', comp.semver, options) &&
+ this.operator.startsWith('>') && comp.operator.startsWith('<')) {
+ return true
+ }
+ // opposite directions greater than
+ if (cmp(this.semver, '>', comp.semver, options) &&
+ this.operator.startsWith('<') && comp.operator.startsWith('>')) {
+ return true
+ }
+ return false
+ }
+}
+
+module.exports = Comparator
+
+const parseOptions = require('../internal/parse-options')
+const { safeRe: re, t } = require('../internal/re')
+const cmp = require('../functions/cmp')
+const debug = require('../internal/debug')
+const SemVer = require('./semver')
+const Range = require('./range')
diff --git a/backend/node_modules/semver/classes/index.js b/backend/node_modules/semver/classes/index.js
new file mode 100644
index 0000000..5e3f5c9
--- /dev/null
+++ b/backend/node_modules/semver/classes/index.js
@@ -0,0 +1,5 @@
+module.exports = {
+ SemVer: require('./semver.js'),
+ Range: require('./range.js'),
+ Comparator: require('./comparator.js'),
+}
diff --git a/backend/node_modules/semver/classes/range.js b/backend/node_modules/semver/classes/range.js
new file mode 100644
index 0000000..ceee231
--- /dev/null
+++ b/backend/node_modules/semver/classes/range.js
@@ -0,0 +1,554 @@
+const SPACE_CHARACTERS = /\s+/g
+
+// hoisted class for cyclic dependency
+class Range {
+ constructor (range, options) {
+ options = parseOptions(options)
+
+ if (range instanceof Range) {
+ if (
+ range.loose === !!options.loose &&
+ range.includePrerelease === !!options.includePrerelease
+ ) {
+ return range
+ } else {
+ return new Range(range.raw, options)
+ }
+ }
+
+ if (range instanceof Comparator) {
+ // just put it in the set and return
+ this.raw = range.value
+ this.set = [[range]]
+ this.formatted = undefined
+ return this
+ }
+
+ this.options = options
+ this.loose = !!options.loose
+ this.includePrerelease = !!options.includePrerelease
+
+ // First reduce all whitespace as much as possible so we do not have to rely
+ // on potentially slow regexes like \s*. This is then stored and used for
+ // future error messages as well.
+ this.raw = range.trim().replace(SPACE_CHARACTERS, ' ')
+
+ // First, split on ||
+ this.set = this.raw
+ .split('||')
+ // map the range to a 2d array of comparators
+ .map(r => this.parseRange(r.trim()))
+ // throw out any comparator lists that are empty
+ // this generally means that it was not a valid range, which is allowed
+ // in loose mode, but will still throw if the WHOLE range is invalid.
+ .filter(c => c.length)
+
+ if (!this.set.length) {
+ throw new TypeError(`Invalid SemVer Range: ${this.raw}`)
+ }
+
+ // if we have any that are not the null set, throw out null sets.
+ if (this.set.length > 1) {
+ // keep the first one, in case they're all null sets
+ const first = this.set[0]
+ this.set = this.set.filter(c => !isNullSet(c[0]))
+ if (this.set.length === 0) {
+ this.set = [first]
+ } else if (this.set.length > 1) {
+ // if we have any that are *, then the range is just *
+ for (const c of this.set) {
+ if (c.length === 1 && isAny(c[0])) {
+ this.set = [c]
+ break
+ }
+ }
+ }
+ }
+
+ this.formatted = undefined
+ }
+
+ get range () {
+ if (this.formatted === undefined) {
+ this.formatted = ''
+ for (let i = 0; i < this.set.length; i++) {
+ if (i > 0) {
+ this.formatted += '||'
+ }
+ const comps = this.set[i]
+ for (let k = 0; k < comps.length; k++) {
+ if (k > 0) {
+ this.formatted += ' '
+ }
+ this.formatted += comps[k].toString().trim()
+ }
+ }
+ }
+ return this.formatted
+ }
+
+ format () {
+ return this.range
+ }
+
+ toString () {
+ return this.range
+ }
+
+ parseRange (range) {
+ // memoize range parsing for performance.
+ // this is a very hot path, and fully deterministic.
+ const memoOpts =
+ (this.options.includePrerelease && FLAG_INCLUDE_PRERELEASE) |
+ (this.options.loose && FLAG_LOOSE)
+ const memoKey = memoOpts + ':' + range
+ const cached = cache.get(memoKey)
+ if (cached) {
+ return cached
+ }
+
+ const loose = this.options.loose
+ // `1.2.3 - 1.2.4` => `>=1.2.3 <=1.2.4`
+ const hr = loose ? re[t.HYPHENRANGELOOSE] : re[t.HYPHENRANGE]
+ range = range.replace(hr, hyphenReplace(this.options.includePrerelease))
+ debug('hyphen replace', range)
+
+ // `> 1.2.3 < 1.2.5` => `>1.2.3 <1.2.5`
+ range = range.replace(re[t.COMPARATORTRIM], comparatorTrimReplace)
+ debug('comparator trim', range)
+
+ // `~ 1.2.3` => `~1.2.3`
+ range = range.replace(re[t.TILDETRIM], tildeTrimReplace)
+ debug('tilde trim', range)
+
+ // `^ 1.2.3` => `^1.2.3`
+ range = range.replace(re[t.CARETTRIM], caretTrimReplace)
+ debug('caret trim', range)
+
+ // At this point, the range is completely trimmed and
+ // ready to be split into comparators.
+
+ let rangeList = range
+ .split(' ')
+ .map(comp => parseComparator(comp, this.options))
+ .join(' ')
+ .split(/\s+/)
+ // >=0.0.0 is equivalent to *
+ .map(comp => replaceGTE0(comp, this.options))
+
+ if (loose) {
+ // in loose mode, throw out any that are not valid comparators
+ rangeList = rangeList.filter(comp => {
+ debug('loose invalid filter', comp, this.options)
+ return !!comp.match(re[t.COMPARATORLOOSE])
+ })
+ }
+ debug('range list', rangeList)
+
+ // if any comparators are the null set, then replace with JUST null set
+ // if more than one comparator, remove any * comparators
+ // also, don't include the same comparator more than once
+ const rangeMap = new Map()
+ const comparators = rangeList.map(comp => new Comparator(comp, this.options))
+ for (const comp of comparators) {
+ if (isNullSet(comp)) {
+ return [comp]
+ }
+ rangeMap.set(comp.value, comp)
+ }
+ if (rangeMap.size > 1 && rangeMap.has('')) {
+ rangeMap.delete('')
+ }
+
+ const result = [...rangeMap.values()]
+ cache.set(memoKey, result)
+ return result
+ }
+
+ intersects (range, options) {
+ if (!(range instanceof Range)) {
+ throw new TypeError('a Range is required')
+ }
+
+ return this.set.some((thisComparators) => {
+ return (
+ isSatisfiable(thisComparators, options) &&
+ range.set.some((rangeComparators) => {
+ return (
+ isSatisfiable(rangeComparators, options) &&
+ thisComparators.every((thisComparator) => {
+ return rangeComparators.every((rangeComparator) => {
+ return thisComparator.intersects(rangeComparator, options)
+ })
+ })
+ )
+ })
+ )
+ })
+ }
+
+ // if ANY of the sets match ALL of its comparators, then pass
+ test (version) {
+ if (!version) {
+ return false
+ }
+
+ if (typeof version === 'string') {
+ try {
+ version = new SemVer(version, this.options)
+ } catch (er) {
+ return false
+ }
+ }
+
+ for (let i = 0; i < this.set.length; i++) {
+ if (testSet(this.set[i], version, this.options)) {
+ return true
+ }
+ }
+ return false
+ }
+}
+
+module.exports = Range
+
+const LRU = require('../internal/lrucache')
+const cache = new LRU()
+
+const parseOptions = require('../internal/parse-options')
+const Comparator = require('./comparator')
+const debug = require('../internal/debug')
+const SemVer = require('./semver')
+const {
+ safeRe: re,
+ t,
+ comparatorTrimReplace,
+ tildeTrimReplace,
+ caretTrimReplace,
+} = require('../internal/re')
+const { FLAG_INCLUDE_PRERELEASE, FLAG_LOOSE } = require('../internal/constants')
+
+const isNullSet = c => c.value === '<0.0.0-0'
+const isAny = c => c.value === ''
+
+// take a set of comparators and determine whether there
+// exists a version which can satisfy it
+const isSatisfiable = (comparators, options) => {
+ let result = true
+ const remainingComparators = comparators.slice()
+ let testComparator = remainingComparators.pop()
+
+ while (result && remainingComparators.length) {
+ result = remainingComparators.every((otherComparator) => {
+ return testComparator.intersects(otherComparator, options)
+ })
+
+ testComparator = remainingComparators.pop()
+ }
+
+ return result
+}
+
+// comprised of xranges, tildes, stars, and gtlt's at this point.
+// already replaced the hyphen ranges
+// turn into a set of JUST comparators.
+const parseComparator = (comp, options) => {
+ debug('comp', comp, options)
+ comp = replaceCarets(comp, options)
+ debug('caret', comp)
+ comp = replaceTildes(comp, options)
+ debug('tildes', comp)
+ comp = replaceXRanges(comp, options)
+ debug('xrange', comp)
+ comp = replaceStars(comp, options)
+ debug('stars', comp)
+ return comp
+}
+
+const isX = id => !id || id.toLowerCase() === 'x' || id === '*'
+
+// ~, ~> --> * (any, kinda silly)
+// ~2, ~2.x, ~2.x.x, ~>2, ~>2.x ~>2.x.x --> >=2.0.0 <3.0.0-0
+// ~2.0, ~2.0.x, ~>2.0, ~>2.0.x --> >=2.0.0 <2.1.0-0
+// ~1.2, ~1.2.x, ~>1.2, ~>1.2.x --> >=1.2.0 <1.3.0-0
+// ~1.2.3, ~>1.2.3 --> >=1.2.3 <1.3.0-0
+// ~1.2.0, ~>1.2.0 --> >=1.2.0 <1.3.0-0
+// ~0.0.1 --> >=0.0.1 <0.1.0-0
+const replaceTildes = (comp, options) => {
+ return comp
+ .trim()
+ .split(/\s+/)
+ .map((c) => replaceTilde(c, options))
+ .join(' ')
+}
+
+const replaceTilde = (comp, options) => {
+ const r = options.loose ? re[t.TILDELOOSE] : re[t.TILDE]
+ return comp.replace(r, (_, M, m, p, pr) => {
+ debug('tilde', comp, _, M, m, p, pr)
+ let ret
+
+ if (isX(M)) {
+ ret = ''
+ } else if (isX(m)) {
+ ret = `>=${M}.0.0 <${+M + 1}.0.0-0`
+ } else if (isX(p)) {
+ // ~1.2 == >=1.2.0 <1.3.0-0
+ ret = `>=${M}.${m}.0 <${M}.${+m + 1}.0-0`
+ } else if (pr) {
+ debug('replaceTilde pr', pr)
+ ret = `>=${M}.${m}.${p}-${pr
+ } <${M}.${+m + 1}.0-0`
+ } else {
+ // ~1.2.3 == >=1.2.3 <1.3.0-0
+ ret = `>=${M}.${m}.${p
+ } <${M}.${+m + 1}.0-0`
+ }
+
+ debug('tilde return', ret)
+ return ret
+ })
+}
+
+// ^ --> * (any, kinda silly)
+// ^2, ^2.x, ^2.x.x --> >=2.0.0 <3.0.0-0
+// ^2.0, ^2.0.x --> >=2.0.0 <3.0.0-0
+// ^1.2, ^1.2.x --> >=1.2.0 <2.0.0-0
+// ^1.2.3 --> >=1.2.3 <2.0.0-0
+// ^1.2.0 --> >=1.2.0 <2.0.0-0
+// ^0.0.1 --> >=0.0.1 <0.0.2-0
+// ^0.1.0 --> >=0.1.0 <0.2.0-0
+const replaceCarets = (comp, options) => {
+ return comp
+ .trim()
+ .split(/\s+/)
+ .map((c) => replaceCaret(c, options))
+ .join(' ')
+}
+
+const replaceCaret = (comp, options) => {
+ debug('caret', comp, options)
+ const r = options.loose ? re[t.CARETLOOSE] : re[t.CARET]
+ const z = options.includePrerelease ? '-0' : ''
+ return comp.replace(r, (_, M, m, p, pr) => {
+ debug('caret', comp, _, M, m, p, pr)
+ let ret
+
+ if (isX(M)) {
+ ret = ''
+ } else if (isX(m)) {
+ ret = `>=${M}.0.0${z} <${+M + 1}.0.0-0`
+ } else if (isX(p)) {
+ if (M === '0') {
+ ret = `>=${M}.${m}.0${z} <${M}.${+m + 1}.0-0`
+ } else {
+ ret = `>=${M}.${m}.0${z} <${+M + 1}.0.0-0`
+ }
+ } else if (pr) {
+ debug('replaceCaret pr', pr)
+ if (M === '0') {
+ if (m === '0') {
+ ret = `>=${M}.${m}.${p}-${pr
+ } <${M}.${m}.${+p + 1}-0`
+ } else {
+ ret = `>=${M}.${m}.${p}-${pr
+ } <${M}.${+m + 1}.0-0`
+ }
+ } else {
+ ret = `>=${M}.${m}.${p}-${pr
+ } <${+M + 1}.0.0-0`
+ }
+ } else {
+ debug('no pr')
+ if (M === '0') {
+ if (m === '0') {
+ ret = `>=${M}.${m}.${p
+ }${z} <${M}.${m}.${+p + 1}-0`
+ } else {
+ ret = `>=${M}.${m}.${p
+ }${z} <${M}.${+m + 1}.0-0`
+ }
+ } else {
+ ret = `>=${M}.${m}.${p
+ } <${+M + 1}.0.0-0`
+ }
+ }
+
+ debug('caret return', ret)
+ return ret
+ })
+}
+
+const replaceXRanges = (comp, options) => {
+ debug('replaceXRanges', comp, options)
+ return comp
+ .split(/\s+/)
+ .map((c) => replaceXRange(c, options))
+ .join(' ')
+}
+
+const replaceXRange = (comp, options) => {
+ comp = comp.trim()
+ const r = options.loose ? re[t.XRANGELOOSE] : re[t.XRANGE]
+ return comp.replace(r, (ret, gtlt, M, m, p, pr) => {
+ debug('xRange', comp, ret, gtlt, M, m, p, pr)
+ const xM = isX(M)
+ const xm = xM || isX(m)
+ const xp = xm || isX(p)
+ const anyX = xp
+
+ if (gtlt === '=' && anyX) {
+ gtlt = ''
+ }
+
+ // if we're including prereleases in the match, then we need
+ // to fix this to -0, the lowest possible prerelease value
+ pr = options.includePrerelease ? '-0' : ''
+
+ if (xM) {
+ if (gtlt === '>' || gtlt === '<') {
+ // nothing is allowed
+ ret = '<0.0.0-0'
+ } else {
+ // nothing is forbidden
+ ret = '*'
+ }
+ } else if (gtlt && anyX) {
+ // we know patch is an x, because we have any x at all.
+ // replace X with 0
+ if (xm) {
+ m = 0
+ }
+ p = 0
+
+ if (gtlt === '>') {
+ // >1 => >=2.0.0
+ // >1.2 => >=1.3.0
+ gtlt = '>='
+ if (xm) {
+ M = +M + 1
+ m = 0
+ p = 0
+ } else {
+ m = +m + 1
+ p = 0
+ }
+ } else if (gtlt === '<=') {
+ // <=0.7.x is actually <0.8.0, since any 0.7.x should
+ // pass. Similarly, <=7.x is actually <8.0.0, etc.
+ gtlt = '<'
+ if (xm) {
+ M = +M + 1
+ } else {
+ m = +m + 1
+ }
+ }
+
+ if (gtlt === '<') {
+ pr = '-0'
+ }
+
+ ret = `${gtlt + M}.${m}.${p}${pr}`
+ } else if (xm) {
+ ret = `>=${M}.0.0${pr} <${+M + 1}.0.0-0`
+ } else if (xp) {
+ ret = `>=${M}.${m}.0${pr
+ } <${M}.${+m + 1}.0-0`
+ }
+
+ debug('xRange return', ret)
+
+ return ret
+ })
+}
+
+// Because * is AND-ed with everything else in the comparator,
+// and '' means "any version", just remove the *s entirely.
+const replaceStars = (comp, options) => {
+ debug('replaceStars', comp, options)
+ // Looseness is ignored here. star is always as loose as it gets!
+ return comp
+ .trim()
+ .replace(re[t.STAR], '')
+}
+
+const replaceGTE0 = (comp, options) => {
+ debug('replaceGTE0', comp, options)
+ return comp
+ .trim()
+ .replace(re[options.includePrerelease ? t.GTE0PRE : t.GTE0], '')
+}
+
+// This function is passed to string.replace(re[t.HYPHENRANGE])
+// M, m, patch, prerelease, build
+// 1.2 - 3.4.5 => >=1.2.0 <=3.4.5
+// 1.2.3 - 3.4 => >=1.2.0 <3.5.0-0 Any 3.4.x will do
+// 1.2 - 3.4 => >=1.2.0 <3.5.0-0
+// TODO build?
+const hyphenReplace = incPr => ($0,
+ from, fM, fm, fp, fpr, fb,
+ to, tM, tm, tp, tpr) => {
+ if (isX(fM)) {
+ from = ''
+ } else if (isX(fm)) {
+ from = `>=${fM}.0.0${incPr ? '-0' : ''}`
+ } else if (isX(fp)) {
+ from = `>=${fM}.${fm}.0${incPr ? '-0' : ''}`
+ } else if (fpr) {
+ from = `>=${from}`
+ } else {
+ from = `>=${from}${incPr ? '-0' : ''}`
+ }
+
+ if (isX(tM)) {
+ to = ''
+ } else if (isX(tm)) {
+ to = `<${+tM + 1}.0.0-0`
+ } else if (isX(tp)) {
+ to = `<${tM}.${+tm + 1}.0-0`
+ } else if (tpr) {
+ to = `<=${tM}.${tm}.${tp}-${tpr}`
+ } else if (incPr) {
+ to = `<${tM}.${tm}.${+tp + 1}-0`
+ } else {
+ to = `<=${to}`
+ }
+
+ return `${from} ${to}`.trim()
+}
+
+const testSet = (set, version, options) => {
+ for (let i = 0; i < set.length; i++) {
+ if (!set[i].test(version)) {
+ return false
+ }
+ }
+
+ if (version.prerelease.length && !options.includePrerelease) {
+ // Find the set of versions that are allowed to have prereleases
+ // For example, ^1.2.3-pr.1 desugars to >=1.2.3-pr.1 <2.0.0
+ // That should allow `1.2.3-pr.2` to pass.
+ // However, `1.2.4-alpha.notready` should NOT be allowed,
+ // even though it's within the range set by the comparators.
+ for (let i = 0; i < set.length; i++) {
+ debug(set[i].semver)
+ if (set[i].semver === Comparator.ANY) {
+ continue
+ }
+
+ if (set[i].semver.prerelease.length > 0) {
+ const allowed = set[i].semver
+ if (allowed.major === version.major &&
+ allowed.minor === version.minor &&
+ allowed.patch === version.patch) {
+ return true
+ }
+ }
+ }
+
+ // Version has a -pre, but it's not one of the ones we like.
+ return false
+ }
+
+ return true
+}
diff --git a/backend/node_modules/semver/classes/semver.js b/backend/node_modules/semver/classes/semver.js
new file mode 100644
index 0000000..13e66ce
--- /dev/null
+++ b/backend/node_modules/semver/classes/semver.js
@@ -0,0 +1,302 @@
+const debug = require('../internal/debug')
+const { MAX_LENGTH, MAX_SAFE_INTEGER } = require('../internal/constants')
+const { safeRe: re, t } = require('../internal/re')
+
+const parseOptions = require('../internal/parse-options')
+const { compareIdentifiers } = require('../internal/identifiers')
+class SemVer {
+ constructor (version, options) {
+ options = parseOptions(options)
+
+ if (version instanceof SemVer) {
+ if (version.loose === !!options.loose &&
+ version.includePrerelease === !!options.includePrerelease) {
+ return version
+ } else {
+ version = version.version
+ }
+ } else if (typeof version !== 'string') {
+ throw new TypeError(`Invalid version. Must be a string. Got type "${typeof version}".`)
+ }
+
+ if (version.length > MAX_LENGTH) {
+ throw new TypeError(
+ `version is longer than ${MAX_LENGTH} characters`
+ )
+ }
+
+ debug('SemVer', version, options)
+ this.options = options
+ this.loose = !!options.loose
+ // this isn't actually relevant for versions, but keep it so that we
+ // don't run into trouble passing this.options around.
+ this.includePrerelease = !!options.includePrerelease
+
+ const m = version.trim().match(options.loose ? re[t.LOOSE] : re[t.FULL])
+
+ if (!m) {
+ throw new TypeError(`Invalid Version: ${version}`)
+ }
+
+ this.raw = version
+
+ // these are actually numbers
+ this.major = +m[1]
+ this.minor = +m[2]
+ this.patch = +m[3]
+
+ if (this.major > MAX_SAFE_INTEGER || this.major < 0) {
+ throw new TypeError('Invalid major version')
+ }
+
+ if (this.minor > MAX_SAFE_INTEGER || this.minor < 0) {
+ throw new TypeError('Invalid minor version')
+ }
+
+ if (this.patch > MAX_SAFE_INTEGER || this.patch < 0) {
+ throw new TypeError('Invalid patch version')
+ }
+
+ // numberify any prerelease numeric ids
+ if (!m[4]) {
+ this.prerelease = []
+ } else {
+ this.prerelease = m[4].split('.').map((id) => {
+ if (/^[0-9]+$/.test(id)) {
+ const num = +id
+ if (num >= 0 && num < MAX_SAFE_INTEGER) {
+ return num
+ }
+ }
+ return id
+ })
+ }
+
+ this.build = m[5] ? m[5].split('.') : []
+ this.format()
+ }
+
+ format () {
+ this.version = `${this.major}.${this.minor}.${this.patch}`
+ if (this.prerelease.length) {
+ this.version += `-${this.prerelease.join('.')}`
+ }
+ return this.version
+ }
+
+ toString () {
+ return this.version
+ }
+
+ compare (other) {
+ debug('SemVer.compare', this.version, this.options, other)
+ if (!(other instanceof SemVer)) {
+ if (typeof other === 'string' && other === this.version) {
+ return 0
+ }
+ other = new SemVer(other, this.options)
+ }
+
+ if (other.version === this.version) {
+ return 0
+ }
+
+ return this.compareMain(other) || this.comparePre(other)
+ }
+
+ compareMain (other) {
+ if (!(other instanceof SemVer)) {
+ other = new SemVer(other, this.options)
+ }
+
+ return (
+ compareIdentifiers(this.major, other.major) ||
+ compareIdentifiers(this.minor, other.minor) ||
+ compareIdentifiers(this.patch, other.patch)
+ )
+ }
+
+ comparePre (other) {
+ if (!(other instanceof SemVer)) {
+ other = new SemVer(other, this.options)
+ }
+
+ // NOT having a prerelease is > having one
+ if (this.prerelease.length && !other.prerelease.length) {
+ return -1
+ } else if (!this.prerelease.length && other.prerelease.length) {
+ return 1
+ } else if (!this.prerelease.length && !other.prerelease.length) {
+ return 0
+ }
+
+ let i = 0
+ do {
+ const a = this.prerelease[i]
+ const b = other.prerelease[i]
+ debug('prerelease compare', i, a, b)
+ if (a === undefined && b === undefined) {
+ return 0
+ } else if (b === undefined) {
+ return 1
+ } else if (a === undefined) {
+ return -1
+ } else if (a === b) {
+ continue
+ } else {
+ return compareIdentifiers(a, b)
+ }
+ } while (++i)
+ }
+
+ compareBuild (other) {
+ if (!(other instanceof SemVer)) {
+ other = new SemVer(other, this.options)
+ }
+
+ let i = 0
+ do {
+ const a = this.build[i]
+ const b = other.build[i]
+ debug('build compare', i, a, b)
+ if (a === undefined && b === undefined) {
+ return 0
+ } else if (b === undefined) {
+ return 1
+ } else if (a === undefined) {
+ return -1
+ } else if (a === b) {
+ continue
+ } else {
+ return compareIdentifiers(a, b)
+ }
+ } while (++i)
+ }
+
+ // preminor will bump the version up to the next minor release, and immediately
+ // down to pre-release. premajor and prepatch work the same way.
+ inc (release, identifier, identifierBase) {
+ switch (release) {
+ case 'premajor':
+ this.prerelease.length = 0
+ this.patch = 0
+ this.minor = 0
+ this.major++
+ this.inc('pre', identifier, identifierBase)
+ break
+ case 'preminor':
+ this.prerelease.length = 0
+ this.patch = 0
+ this.minor++
+ this.inc('pre', identifier, identifierBase)
+ break
+ case 'prepatch':
+ // If this is already a prerelease, it will bump to the next version
+ // drop any prereleases that might already exist, since they are not
+ // relevant at this point.
+ this.prerelease.length = 0
+ this.inc('patch', identifier, identifierBase)
+ this.inc('pre', identifier, identifierBase)
+ break
+ // If the input is a non-prerelease version, this acts the same as
+ // prepatch.
+ case 'prerelease':
+ if (this.prerelease.length === 0) {
+ this.inc('patch', identifier, identifierBase)
+ }
+ this.inc('pre', identifier, identifierBase)
+ break
+
+ case 'major':
+ // If this is a pre-major version, bump up to the same major version.
+ // Otherwise increment major.
+ // 1.0.0-5 bumps to 1.0.0
+ // 1.1.0 bumps to 2.0.0
+ if (
+ this.minor !== 0 ||
+ this.patch !== 0 ||
+ this.prerelease.length === 0
+ ) {
+ this.major++
+ }
+ this.minor = 0
+ this.patch = 0
+ this.prerelease = []
+ break
+ case 'minor':
+ // If this is a pre-minor version, bump up to the same minor version.
+ // Otherwise increment minor.
+ // 1.2.0-5 bumps to 1.2.0
+ // 1.2.1 bumps to 1.3.0
+ if (this.patch !== 0 || this.prerelease.length === 0) {
+ this.minor++
+ }
+ this.patch = 0
+ this.prerelease = []
+ break
+ case 'patch':
+ // If this is not a pre-release version, it will increment the patch.
+ // If it is a pre-release it will bump up to the same patch version.
+ // 1.2.0-5 patches to 1.2.0
+ // 1.2.0 patches to 1.2.1
+ if (this.prerelease.length === 0) {
+ this.patch++
+ }
+ this.prerelease = []
+ break
+ // This probably shouldn't be used publicly.
+ // 1.0.0 'pre' would become 1.0.0-0 which is the wrong direction.
+ case 'pre': {
+ const base = Number(identifierBase) ? 1 : 0
+
+ if (!identifier && identifierBase === false) {
+ throw new Error('invalid increment argument: identifier is empty')
+ }
+
+ if (this.prerelease.length === 0) {
+ this.prerelease = [base]
+ } else {
+ let i = this.prerelease.length
+ while (--i >= 0) {
+ if (typeof this.prerelease[i] === 'number') {
+ this.prerelease[i]++
+ i = -2
+ }
+ }
+ if (i === -1) {
+ // didn't increment anything
+ if (identifier === this.prerelease.join('.') && identifierBase === false) {
+ throw new Error('invalid increment argument: identifier already exists')
+ }
+ this.prerelease.push(base)
+ }
+ }
+ if (identifier) {
+ // 1.2.0-beta.1 bumps to 1.2.0-beta.2,
+ // 1.2.0-beta.fooblz or 1.2.0-beta bumps to 1.2.0-beta.0
+ let prerelease = [identifier, base]
+ if (identifierBase === false) {
+ prerelease = [identifier]
+ }
+ if (compareIdentifiers(this.prerelease[0], identifier) === 0) {
+ if (isNaN(this.prerelease[1])) {
+ this.prerelease = prerelease
+ }
+ } else {
+ this.prerelease = prerelease
+ }
+ }
+ break
+ }
+ default:
+ throw new Error(`invalid increment argument: ${release}`)
+ }
+ this.raw = this.format()
+ if (this.build.length) {
+ this.raw += `+${this.build.join('.')}`
+ }
+ return this
+ }
+}
+
+module.exports = SemVer