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parse-options.js 0000644 00000000504 15167732674 0007726 0 ustar 00 // parse out just the options we care about
const looseOption = Object.freeze({ loose: true })
const emptyOpts = Object.freeze({ })
const parseOptions = options => {
if (!options) {
return emptyOpts
}
if (typeof options !== 'object') {
return looseOption
}
return options
}
module.exports = parseOptions
lrucache.js 0000644 00000001424 15167732674 0006713 0 ustar 00 class LRUCache {
constructor () {
this.max = 1000
this.map = new Map()
}
get (key) {
const value = this.map.get(key)
if (value === undefined) {
return undefined
} else {
// Remove the key from the map and add it to the end
this.map.delete(key)
this.map.set(key, value)
return value
}
}
delete (key) {
return this.map.delete(key)
}
set (key, value) {
const deleted = this.delete(key)
if (!deleted && value !== undefined) {
// If cache is full, delete the least recently used item
if (this.map.size >= this.max) {
const firstKey = this.map.keys().next().value
this.delete(firstKey)
}
this.map.set(key, value)
}
return this
}
}
module.exports = LRUCache
identifiers.js 0000644 00000000632 15167732674 0007432 0 ustar 00 const numeric = /^[0-9]+$/
const compareIdentifiers = (a, b) => {
const anum = numeric.test(a)
const bnum = numeric.test(b)
if (anum && bnum) {
a = +a
b = +b
}
return a === b ? 0
: (anum && !bnum) ? -1
: (bnum && !anum) ? 1
: a < b ? -1
: 1
}
const rcompareIdentifiers = (a, b) => compareIdentifiers(b, a)
module.exports = {
compareIdentifiers,
rcompareIdentifiers,
}
re.js 0000644 00000017401 15167732674 0005535 0 ustar 00 const {
MAX_SAFE_COMPONENT_LENGTH,
MAX_SAFE_BUILD_LENGTH,
MAX_LENGTH,
} = require('./constants')
const debug = require('./debug')
exports = module.exports = {}
// The actual regexps go on exports.re
const re = exports.re = []
const safeRe = exports.safeRe = []
const src = exports.src = []
const t = exports.t = {}
let R = 0
const LETTERDASHNUMBER = '[a-zA-Z0-9-]'
// Replace some greedy regex tokens to prevent regex dos issues. These regex are
// used internally via the safeRe object since all inputs in this library get
// normalized first to trim and collapse all extra whitespace. The original
// regexes are exported for userland consumption and lower level usage. A
// future breaking change could export the safer regex only with a note that
// all input should have extra whitespace removed.
const safeRegexReplacements = [
['\\s', 1],
['\\d', MAX_LENGTH],
[LETTERDASHNUMBER, MAX_SAFE_BUILD_LENGTH],
]
const makeSafeRegex = (value) => {
for (const [token, max] of safeRegexReplacements) {
value = value
.split(`${token}*`).join(`${token}{0,${max}}`)
.split(`${token}+`).join(`${token}{1,${max}}`)
}
return value
}
const createToken = (name, value, isGlobal) => {
const safe = makeSafeRegex(value)
const index = R++
debug(name, index, value)
t[name] = index
src[index] = value
re[index] = new RegExp(value, isGlobal ? 'g' : undefined)
safeRe[index] = new RegExp(safe, isGlobal ? 'g' : undefined)
}
// The following Regular Expressions can be used for tokenizing,
// validating, and parsing SemVer version strings.
// ## Numeric Identifier
// A single `0`, or a non-zero digit followed by zero or more digits.
createToken('NUMERICIDENTIFIER', '0|[1-9]\\d*')
createToken('NUMERICIDENTIFIERLOOSE', '\\d+')
// ## Non-numeric Identifier
// Zero or more digits, followed by a letter or hyphen, and then zero or
// more letters, digits, or hyphens.
createToken('NONNUMERICIDENTIFIER', `\\d*[a-zA-Z-]${LETTERDASHNUMBER}*`)
// ## Main Version
// Three dot-separated numeric identifiers.
createToken('MAINVERSION', `(${src[t.NUMERICIDENTIFIER]})\\.` +
`(${src[t.NUMERICIDENTIFIER]})\\.` +
`(${src[t.NUMERICIDENTIFIER]})`)
createToken('MAINVERSIONLOOSE', `(${src[t.NUMERICIDENTIFIERLOOSE]})\\.` +
`(${src[t.NUMERICIDENTIFIERLOOSE]})\\.` +
`(${src[t.NUMERICIDENTIFIERLOOSE]})`)
// ## Pre-release Version Identifier
// A numeric identifier, or a non-numeric identifier.
createToken('PRERELEASEIDENTIFIER', `(?:${src[t.NUMERICIDENTIFIER]
}|${src[t.NONNUMERICIDENTIFIER]})`)
createToken('PRERELEASEIDENTIFIERLOOSE', `(?:${src[t.NUMERICIDENTIFIERLOOSE]
}|${src[t.NONNUMERICIDENTIFIER]})`)
// ## Pre-release Version
// Hyphen, followed by one or more dot-separated pre-release version
// identifiers.
createToken('PRERELEASE', `(?:-(${src[t.PRERELEASEIDENTIFIER]
}(?:\\.${src[t.PRERELEASEIDENTIFIER]})*))`)
createToken('PRERELEASELOOSE', `(?:-?(${src[t.PRERELEASEIDENTIFIERLOOSE]
}(?:\\.${src[t.PRERELEASEIDENTIFIERLOOSE]})*))`)
// ## Build Metadata Identifier
// Any combination of digits, letters, or hyphens.
createToken('BUILDIDENTIFIER', `${LETTERDASHNUMBER}+`)
// ## Build Metadata
// Plus sign, followed by one or more period-separated build metadata
// identifiers.
createToken('BUILD', `(?:\\+(${src[t.BUILDIDENTIFIER]
}(?:\\.${src[t.BUILDIDENTIFIER]})*))`)
// ## Full Version String
// A main version, followed optionally by a pre-release version and
// build metadata.
// Note that the only major, minor, patch, and pre-release sections of
// the version string are capturing groups. The build metadata is not a
// capturing group, because it should not ever be used in version
// comparison.
createToken('FULLPLAIN', `v?${src[t.MAINVERSION]
}${src[t.PRERELEASE]}?${
src[t.BUILD]}?`)
createToken('FULL', `^${src[t.FULLPLAIN]}$`)
// like full, but allows v1.2.3 and =1.2.3, which people do sometimes.
// also, 1.0.0alpha1 (prerelease without the hyphen) which is pretty
// common in the npm registry.
createToken('LOOSEPLAIN', `[v=\\s]*${src[t.MAINVERSIONLOOSE]
}${src[t.PRERELEASELOOSE]}?${
src[t.BUILD]}?`)
createToken('LOOSE', `^${src[t.LOOSEPLAIN]}$`)
createToken('GTLT', '((?:<|>)?=?)')
// Something like "2.*" or "1.2.x".
// Note that "x.x" is a valid xRange identifer, meaning "any version"
// Only the first item is strictly required.
createToken('XRANGEIDENTIFIERLOOSE', `${src[t.NUMERICIDENTIFIERLOOSE]}|x|X|\\*`)
createToken('XRANGEIDENTIFIER', `${src[t.NUMERICIDENTIFIER]}|x|X|\\*`)
createToken('XRANGEPLAIN', `[v=\\s]*(${src[t.XRANGEIDENTIFIER]})` +
`(?:\\.(${src[t.XRANGEIDENTIFIER]})` +
`(?:\\.(${src[t.XRANGEIDENTIFIER]})` +
`(?:${src[t.PRERELEASE]})?${
src[t.BUILD]}?` +
`)?)?`)
createToken('XRANGEPLAINLOOSE', `[v=\\s]*(${src[t.XRANGEIDENTIFIERLOOSE]})` +
`(?:\\.(${src[t.XRANGEIDENTIFIERLOOSE]})` +
`(?:\\.(${src[t.XRANGEIDENTIFIERLOOSE]})` +
`(?:${src[t.PRERELEASELOOSE]})?${
src[t.BUILD]}?` +
`)?)?`)
createToken('XRANGE', `^${src[t.GTLT]}\\s*${src[t.XRANGEPLAIN]}$`)
createToken('XRANGELOOSE', `^${src[t.GTLT]}\\s*${src[t.XRANGEPLAINLOOSE]}$`)
// Coercion.
// Extract anything that could conceivably be a part of a valid semver
createToken('COERCEPLAIN', `${'(^|[^\\d])' +
'(\\d{1,'}${MAX_SAFE_COMPONENT_LENGTH}})` +
`(?:\\.(\\d{1,${MAX_SAFE_COMPONENT_LENGTH}}))?` +
`(?:\\.(\\d{1,${MAX_SAFE_COMPONENT_LENGTH}}))?`)
createToken('COERCE', `${src[t.COERCEPLAIN]}(?:$|[^\\d])`)
createToken('COERCEFULL', src[t.COERCEPLAIN] +
`(?:${src[t.PRERELEASE]})?` +
`(?:${src[t.BUILD]})?` +
`(?:$|[^\\d])`)
createToken('COERCERTL', src[t.COERCE], true)
createToken('COERCERTLFULL', src[t.COERCEFULL], true)
// Tilde ranges.
// Meaning is "reasonably at or greater than"
createToken('LONETILDE', '(?:~>?)')
createToken('TILDETRIM', `(\\s*)${src[t.LONETILDE]}\\s+`, true)
exports.tildeTrimReplace = '$1~'
createToken('TILDE', `^${src[t.LONETILDE]}${src[t.XRANGEPLAIN]}$`)
createToken('TILDELOOSE', `^${src[t.LONETILDE]}${src[t.XRANGEPLAINLOOSE]}$`)
// Caret ranges.
// Meaning is "at least and backwards compatible with"
createToken('LONECARET', '(?:\\^)')
createToken('CARETTRIM', `(\\s*)${src[t.LONECARET]}\\s+`, true)
exports.caretTrimReplace = '$1^'
createToken('CARET', `^${src[t.LONECARET]}${src[t.XRANGEPLAIN]}$`)
createToken('CARETLOOSE', `^${src[t.LONECARET]}${src[t.XRANGEPLAINLOOSE]}$`)
// A simple gt/lt/eq thing, or just "" to indicate "any version"
createToken('COMPARATORLOOSE', `^${src[t.GTLT]}\\s*(${src[t.LOOSEPLAIN]})$|^$`)
createToken('COMPARATOR', `^${src[t.GTLT]}\\s*(${src[t.FULLPLAIN]})$|^$`)
// An expression to strip any whitespace between the gtlt and the thing
// it modifies, so that `> 1.2.3` ==> `>1.2.3`
createToken('COMPARATORTRIM', `(\\s*)${src[t.GTLT]
}\\s*(${src[t.LOOSEPLAIN]}|${src[t.XRANGEPLAIN]})`, true)
exports.comparatorTrimReplace = '$1$2$3'
// Something like `1.2.3 - 1.2.4`
// Note that these all use the loose form, because they'll be
// checked against either the strict or loose comparator form
// later.
createToken('HYPHENRANGE', `^\\s*(${src[t.XRANGEPLAIN]})` +
`\\s+-\\s+` +
`(${src[t.XRANGEPLAIN]})` +
`\\s*$`)
createToken('HYPHENRANGELOOSE', `^\\s*(${src[t.XRANGEPLAINLOOSE]})` +
`\\s+-\\s+` +
`(${src[t.XRANGEPLAINLOOSE]})` +
`\\s*$`)
// Star ranges basically just allow anything at all.
createToken('STAR', '(<|>)?=?\\s*\\*')
// >=0.0.0 is like a star
createToken('GTE0', '^\\s*>=\\s*0\\.0\\.0\\s*$')
createToken('GTE0PRE', '^\\s*>=\\s*0\\.0\\.0-0\\s*$')
debug.js 0000644 00000000342 15167732674 0006211 0 ustar 00 const debug = (
typeof process === 'object' &&
process.env &&
process.env.NODE_DEBUG &&
/\bsemver\b/i.test(process.env.NODE_DEBUG)
) ? (...args) => console.error('SEMVER', ...args)
: () => {}
module.exports = debug
constants.js 0000644 00000001533 15167732674 0007142 0 ustar 00 // Note: this is the semver.org version of the spec that it implements
// Not necessarily the package version of this code.
const SEMVER_SPEC_VERSION = '2.0.0'
const MAX_LENGTH = 256
const MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER ||
/* istanbul ignore next */ 9007199254740991
// Max safe segment length for coercion.
const MAX_SAFE_COMPONENT_LENGTH = 16
// Max safe length for a build identifier. The max length minus 6 characters for
// the shortest version with a build 0.0.0+BUILD.
const MAX_SAFE_BUILD_LENGTH = MAX_LENGTH - 6
const RELEASE_TYPES = [
'major',
'premajor',
'minor',
'preminor',
'patch',
'prepatch',
'prerelease',
]
module.exports = {
MAX_LENGTH,
MAX_SAFE_COMPONENT_LENGTH,
MAX_SAFE_BUILD_LENGTH,
MAX_SAFE_INTEGER,
RELEASE_TYPES,
SEMVER_SPEC_VERSION,
FLAG_INCLUDE_PRERELEASE: 0b001,
FLAG_LOOSE: 0b010,
}