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const fetch = require('npm-registry-fetch')
const { Minipass } = require('minipass')
const Fetcher = require('./fetcher.js')
const FileFetcher = require('./file.js')
const _ = require('./util/protected.js')
const pacoteVersion = require('../package.json').version
class RemoteFetcher extends Fetcher {
constructor (spec, opts) {
super(spec, opts)
this.resolved = this.spec.fetchSpec
const resolvedURL = new URL(this.resolved)
if (this.replaceRegistryHost !== 'never'
&& (this.replaceRegistryHost === 'always'
|| this.replaceRegistryHost === resolvedURL.host)) {
this.resolved = new URL(resolvedURL.pathname, this.registry).href
}
// nam is a fermented pork sausage that is good to eat
const nameat = this.spec.name ? `${this.spec.name}@` : ''
this.pkgid = opts.pkgid ? opts.pkgid : `remote:${nameat}${this.resolved}`
}
// Don't need to cache tarball fetches in pacote, because make-fetch-happen
// will write into cacache anyway.
get [_.cacheFetches] () {
return false
}
[_.tarballFromResolved] () {
const stream = new Minipass()
stream.hasIntegrityEmitter = true
const fetchOpts = {
...this.opts,
headers: this.#headers(),
spec: this.spec,
integrity: this.integrity,
algorithms: [this.pickIntegrityAlgorithm()],
}
// eslint-disable-next-line promise/always-return
fetch(this.resolved, fetchOpts).then(res => {
res.body.on('error',
/* istanbul ignore next - exceedingly rare and hard to simulate */
er => stream.emit('error', er)
)
res.body.on('integrity', i => {
this.integrity = i
stream.emit('integrity', i)
})
res.body.pipe(stream)
}).catch(er => stream.emit('error', er))
return stream
}
#headers () {
return {
// npm will override this, but ensure that we always send *something*
'user-agent': this.opts.userAgent ||
`pacote/${pacoteVersion} node/${process.version}`,
...(this.opts.headers || {}),
'pacote-version': pacoteVersion,
'pacote-req-type': 'tarball',
'pacote-pkg-id': this.pkgid,
...(this.integrity ? { 'pacote-integrity': String(this.integrity) }
: {}),
...(this.opts.headers || {}),
}
}
get types () {
return ['remote']
}
// getting a packument and/or manifest is the same as with a file: spec.
// unpack the tarball stream, and then read from the package.json file.
packument () {
return FileFetcher.prototype.packument.apply(this)
}
manifest () {
return FileFetcher.prototype.manifest.apply(this)
}
}
module.exports = RemoteFetcher