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const semver = require('semver') const { basename } = require('node:path') const { URL } = require('node:url') module.exports = (name, tgz) => { const base = basename(tgz) if (!base.endsWith('.tgz')) { return null } if (tgz.startsWith('http:/') || tgz.startsWith('https:/')) { const u = new URL(tgz) // registry url? check for most likely pattern. // either /@foo/bar/-/bar-1.2.3.tgz or // /foo/-/foo-1.2.3.tgz, and fall through to // basename checking. Note that registries can // be mounted below the root url, so /a/b/-/x/y/foo/-/foo-1.2.3.tgz // is a potential option. const tfsplit = u.pathname.slice(1).split('/-/') if (tfsplit.length > 1) { const afterTF = tfsplit.pop() if (afterTF === base) { const pre = tfsplit.pop() const preSplit = pre.split(/\/|%2f/i) const project = preSplit.pop() const scope = preSplit.pop() return versionFromBaseScopeName(base, scope, project) } } } const split = name.split(/\/|%2f/i) const project = split.pop() const scope = split.pop() return versionFromBaseScopeName(base, scope, project) } const versionFromBaseScopeName = (base, scope, name) => { if (!base.startsWith(name + '-')) { return null } const parsed = semver.parse(base.substring(name.length + 1, base.length - 4)) return parsed ? { name: scope && scope.charAt(0) === '@' ? `${scope}/${name}` : name, version: parsed.version, } : null }