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Diffstat (limited to 'backend/node_modules/semver/classes/comparator.js')
-rw-r--r-- | backend/node_modules/semver/classes/comparator.js | 141 |
1 files changed, 141 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') |