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'use strict'
const npa = require('npm-package-arg')
const semver = require('semver')
module.exports = pickManifest
function pickManifest (packument, wanted, opts) {
opts = opts || {}
const spec = npa.resolve(packument.name, wanted)
const type = spec.type
if (type === 'version' || type === 'range') {
wanted = semver.clean(wanted, true) || wanted
}
const distTags = packument['dist-tags'] || {}
const versions = Object.keys(packument.versions || {}).filter(v => semver.valid(v, true))
const undeprecated = versions.filter(v => !packument.versions[v].deprecated)
let err
if (!versions.length) {
err = new Error(`No valid versions available for ${packument.name}`)
err.code = 'ENOVERSIONS'
err.name = packument.name
err.type = type
err.wanted = wanted
throw err
}
let target
if (type === 'tag') {
target = distTags[wanted]
} else if (type === 'version') {
target = wanted
} else if (type !== 'range') {
throw new Error('Only tag, version, and range are supported')
}
const tagVersion = distTags[opts.defaultTag || 'latest']
if (
!target &&
tagVersion &&
packument.versions[tagVersion] &&
semver.satisfies(tagVersion, wanted, true)
) {
target = tagVersion
}
if (!target && !opts.includeDeprecated) {
target = semver.maxSatisfying(undeprecated, wanted, true)
}
if (!target) {
target = semver.maxSatisfying(versions, wanted, true)
}
if (!target && wanted === '*') {
// This specific corner is meant for the case where
// someone is using `*` as a selector, but all versions
// are pre-releases, which don't match ranges at all.
target = tagVersion
}
const manifest = target && packument.versions[target]
if (!manifest) {
err = new Error(
`No matching version found for ${packument.name}@${wanted}`
)
err.code = 'ETARGET'
err.name = packument.name
err.type = type
err.wanted = wanted
err.versions = versions
err.distTags = distTags
err.defaultTag = opts.defaultTag
throw err
} else {
return manifest
}
}
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