const Fetcher = require('./fetcher.js') const FileFetcher = require('./file.js') const _tarballFromResolved = Symbol.for('pacote.Fetcher._tarballFromResolved') const pacoteVersion = require('../package.json').version const fetch = require('npm-registry-fetch') const ssri = require('ssri') const Minipass = require('minipass') const _headers = Symbol('_headers') class RemoteFetcher extends Fetcher { constructor (spec, opts) { super(spec, opts) this.resolved = this.spec.fetchSpec // 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}${this.resolved}` } [_tarballFromResolved] () { const stream = new Minipass() const fetchOpts = { ...this.opts, headers: this[_headers](), spec: this.spec, integrity: this.integrity, algorithms: [ this.pickIntegrityAlgorithm() ], } fetch(this.resolved, fetchOpts).then(res => { const hash = res.headers.get('x-local-cache-hash') if (hash) { this.integrity = decodeURIComponent(hash) } res.body.on('error', /* istanbul ignore next - exceedingly rare and hard to simulate */ er => stream.emit('error', er) ).pipe(stream) }).catch(er => stream.emit('error', er)) return stream } [_headers] () { return { // npm will override this, but ensure that we always send *something* 'user-agent': this.opts['user-agent'] || `pacote/${pacoteVersion} node/${process.version}`, ...(this.opts.headers || {}), 'pacote-version': pacoteVersion, 'pacote-req-type': 'tarball', 'pacote-pkg-id': this.pkgid, 'pacote-integrity': String(this.integrity), } } 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