feat: add option to not replace magic registry host (#143)

lib/fetcher.js

@@ -105,6 +105,9 @@ class FetcherBase {
       this[_readPackageJson] = readPackageJsonFast
     }
 
+    // config values: npmjs (default), never
+    this.replaceRegistryHost = opts.replaceRegistryHost === 'never' ? 'never' : 'npmjs'
+
     this.defaultTag = opts.defaultTag || 'latest'
     this.registry = removeTrailingSlashes(opts.registry || 'https://registry.npmjs.org')
 

lib/remote.js

@@ -13,7 +13,9 @@ class RemoteFetcher extends Fetcher {
   constructor (spec, opts) {
     super(spec, opts)
     this.resolved = this.spec.fetchSpec
-    if (magic.test(this.resolved) && !magic.test(this.registry + '/')) {
+    if (this.replaceRegistryHost === 'npmjs'
+      && magic.test(this.resolved)
+      && !magic.test(this.registry + '/')) {
       this.resolved = this.resolved.replace(magic, this.registry + '/')
     }
 

package.json

@@ -29,6 +29,7 @@
     "@npmcli/template-oss": "3.2.2",
     "hosted-git-info": "^5.0.0",
     "mutate-fs": "^2.1.1",
+    "nock": "^13.2.4",
     "npm-registry-mock": "^1.3.1",
     "tap": "^16.0.1"
   },

test/fetcher.js

@@ -517,3 +517,17 @@ t.test('set integrity, pick default algo', t => {
   t.equal(g.pickIntegrityAlgorithm(), 'sha256')
   t.end()
 })
+
+t.test('replace opts defaults to npmjs', t => {
+  const f = new FileFetcher('pkg.tgz', {
+  })
+  t.equal(f.replaceRegistryHost, 'npmjs')
+  t.end()
+})
+t.test('replace opts never', t => {
+  const f = new FileFetcher('pkg.tgz', {
+    replaceRegistryHost: 'never',
+  })
+  t.equal(f.replaceRegistryHost, 'never')
+  t.end()
+})

test/fixtures/tnock.js

@@ -0,0 +1,14 @@
+'use strict'
+
+const nock = require('nock')
+
+module.exports = tnock
+function tnock (t, host) {
+  const server = nock(host)
+  nock.disableNetConnect()
+  t.teardown(function () {
+    nock.enableNetConnect()
+    server.done()
+  })
+  return server
+}

test/registry.js

@@ -1,6 +1,7 @@
 const RegistryFetcher = require('../lib/registry.js')
 const t = require('tap')
 const mr = require('npm-registry-mock')
+const tnock = require('./fixtures/tnock')
 const port = 18000 + (+process.env.TAP_CHILD_ID || 0)
 const me = t.testdir()
 
@@ -239,3 +240,93 @@ t.test('packument that falls back to fullMetadata', t => {
     t.end()
   })
 })
+
+t.test('option replaceRegistryHost', rhTest => {
+  const { join, resolve } = require('path')
+  const fs = require('fs')
+
+  const abbrev = resolve(__dirname, 'fixtures/abbrev-1.1.1.tgz')
+  const abbrevTGZ = fs.readFileSync(abbrev)
+
+  const abbrevPackument = JSON.stringify({
+    _id: 'abbrev',
+    _rev: 'lkjadflkjasdf',
+    name: 'abbrev',
+    'dist-tags': { latest: '1.1.1' },
+    versions: {
+      '1.1.1': {
+        name: 'abbrev',
+        version: '1.1.1',
+        dist: {
+          tarball: 'https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz',
+        },
+      },
+    },
+  })
+
+  rhTest.test('host should not be replaced', async ct => {
+    const testdir = t.testdir()
+    tnock(ct, 'https://registry.github.com')
+      .get('/abbrev')
+      .reply(200, abbrevPackument)
+
+    tnock(ct, 'https://registry.npmjs.org')
+      .get('/abbrev/-/abbrev-1.1.1.tgz')
+      .reply(200, abbrevTGZ)
+
+    const fetcher = new RegistryFetcher('abbrev', {
+      registry: 'https://registry.github.com',
+      cache: join(testdir, 'cache'),
+      fullReadJson: true,
+      replaceRegistryHost: 'never',
+    })
+    ct.equal(fetcher.replaceRegistryHost, 'never')
+    const manifest = await fetcher.manifest()
+    ct.equal(manifest.dist.tarball, 'https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz')
+    const tarball = await fetcher.tarball()
+    ct.match(tarball, abbrevTGZ)
+  })
+
+  rhTest.test('host should be replaced', async ct => {
+    const testdir = t.testdir()
+    tnock(ct, 'https://registry.github.com')
+      .get('/abbrev')
+      .reply(200, abbrevPackument)
+      .get('/abbrev/-/abbrev-1.1.1.tgz')
+      .reply(200, abbrevTGZ)
+
+    const fetcher = new RegistryFetcher('abbrev', {
+      registry: 'https://registry.github.com',
+      cache: join(testdir, 'cache'),
+      fullReadJson: true,
+    })
+    ct.equal(fetcher.replaceRegistryHost, 'npmjs')
+    const manifest = await fetcher.manifest()
+    ct.equal(manifest.dist.tarball, 'https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz')
+    const tarball = await fetcher.tarball()
+    ct.match(tarball, abbrevTGZ)
+  })
+
+  rhTest.test('host should be replaced if set to npmjs', async ct => {
+    const testdir = t.testdir()
+    tnock(ct, 'https://registry.github.com')
+      .get('/abbrev')
+      .reply(200, abbrevPackument)
+      .get('/abbrev/-/abbrev-1.1.1.tgz')
+      .reply(200, abbrevTGZ)
+
+    const fetcher = new RegistryFetcher('abbrev', {
+      registry: 'https://registry.github.com',
+      cache: join(testdir, 'cache'),
+      fullReadJson: true,
+      replaceRegistryHost: 'npmjs',
+    })
+    ct.equal(fetcher.replaceRegistryHost, 'npmjs')
+    const manifest = await fetcher.manifest()
+    ct.equal(manifest.dist.tarball, 'https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz')
+    const tarball = await fetcher.tarball()
+    ct.match(tarball, abbrevTGZ)
+  })
+
+  rhTest.end()
+})