[DRAFT] omit resolved from registry dependencies

lib/arborist/build-ideal-tree.js

@@ -311,6 +311,7 @@ module.exports = cls => class IdealTreeBuilder extends cls {
         ? Shrinkwrap.reset({
           path: this.path,
           lockfileVersion: this.options.lockfileVersion,
+          resolveOptions: this.options,
         }).then(meta => Object.assign(root, { meta }))
         : this.loadVirtual({ root }))
 
@@ -354,6 +355,7 @@ module.exports = cls => class IdealTreeBuilder extends cls {
     const meta = new Shrinkwrap({
       path: this.path,
       lockfileVersion: this.options.lockfileVersion,
+      resolveOptions: this.options,
     })
     meta.reset()
     root.meta = meta

lib/arborist/load-actual.js

@@ -147,6 +147,7 @@ module.exports = cls => class ActualLoader extends cls {
     const meta = await Shrinkwrap.load({
       path: this[_actualTree].path,
       hiddenLockfile: true,
+      resolveOptions: this.options,
     })
     if (meta.loadedFromDisk) {
       this[_actualTree].meta = meta
@@ -155,6 +156,7 @@ module.exports = cls => class ActualLoader extends cls {
       const meta = await Shrinkwrap.load({
         path: this[_actualTree].path,
         lockfileVersion: this.options.lockfileVersion,
+        resolveOptions: this.options,
       })
       this[_actualTree].meta = meta
       return this[_loadActualActually]({ root, ignoreMissing })

lib/arborist/load-virtual.js

@@ -57,6 +57,7 @@ module.exports = cls => class VirtualLoader extends cls {
     const s = await Shrinkwrap.load({
       path: this.path,
       lockfileVersion: this.options.lockfileVersion,
+      resolveOptions: this.options,
     })
     if (!s.loadedFromDisk && !options.root) {
       const er = new Error('loadVirtual requires existing shrinkwrap file')

lib/node.js

@@ -522,6 +522,18 @@ class Node {
     return this === this.root || this === this.root.target
   }
 
+  get isRegistryDependency () {
+    if (this.edgesIn.size === 0) {
+      return false
+    }
+    for (const edge of this.edgesIn) {
+      if (!npa(edge.spec).registry) {
+        return false
+      }
+    }
+    return true
+  }
+
   * ancestry () {
     for (let anc = this; anc; anc = anc.resolveParent) {
       yield anc

lib/override-resolves.js

@@ -0,0 +1,52 @@
+const npa = require('npm-package-arg')
+
+function overrideResolves (node, resolved, opts = {}) {
+  const {
+    omitLockfileRegistryResolved = false,
+    recordDefaultRegistry = false,
+  } = opts
+
+  const isRegistryDependency = node.isRegistryDependency
+
+  // omit the resolved url of registry dependencies. this makes installs slower
+  // because npm must resolve the url for each package version but it allows
+  // users to use a lockfile across registries that host tarballs at different
+  // paths.
+  if (isRegistryDependency && omitLockfileRegistryResolved) {
+    return undefined
+  }
+
+  // replace the configured registry with the default registry. the default
+  // registry is a magic value meaning the current registry, so recording
+  // resolved with the default registry allows users to switch to a
+  // different registry without removing their lockfile. The path portion
+  // of the resolved url is preserved so this trick only works when the
+  // different registries host tarballs at the same relative paths.
+  if (isRegistryDependency && recordDefaultRegistry) {
+    const scope = npa(node.packageName).scope
+    const registry = scope && opts[`${scope}:registry`]
+      ? opts[`${scope}:registry`]
+      : opts.registry
+
+    // normalize registry url - strip trailing slash.
+    // TODO improve normalization for both the configured registry and resolved
+    // url. consider port, protocol, more path normalization.
+    const normalized = registry.endsWith('/')
+      ? registry.slice(0, -1)
+      : registry
+
+    // only replace the host if the resolved url is for the configured
+    // registry. registries may host tarballs on another server. return
+    // undefined so npm will re-resolve the url from the current registry when
+    // it reads the lockfile.
+    if (resolved.startsWith(normalized)) {
+      return 'https://registry.npmjs.org' + resolved.slice(normalized.length)
+    } else {
+      return undefined
+    }
+  }
+
+  return resolved
+}
+
+module.exports = { overrideResolves }

lib/shrinkwrap.js

@@ -95,6 +95,7 @@ const specFromResolved = resolved => {
 const relpath = require('./relpath.js')
 
 const consistentResolve = require('./consistent-resolve.js')
+const { overrideResolves } = require('./override-resolves.js')
 
 const maybeReadFile = file => {
   return readFile(file, 'utf8').then(d => d, er => {
@@ -265,7 +266,7 @@ class Shrinkwrap {
     return s
   }
 
-  static metaFromNode (node, path) {
+  static metaFromNode (node, path, options = {}) {
     if (node.isLink) {
       return {
         resolved: relpath(path, node.realpath),
@@ -300,7 +301,7 @@ class Shrinkwrap {
 
     const resolved = consistentResolve(node.resolved, node.path, path, true)
     if (resolved) {
-      meta.resolved = resolved
+      meta.resolved = overrideResolves(node, resolved, options)
     }
 
     if (node.extraneous) {
@@ -331,6 +332,7 @@ class Shrinkwrap {
       hiddenLockfile = false,
       log = procLog,
       lockfileVersion,
+      resolveOptions = {},
     } = options
 
     this.lockfileVersion = hiddenLockfile ? 3
@@ -349,6 +351,7 @@ class Shrinkwrap {
     this.yarnLock = null
     this.hiddenLockfile = hiddenLockfile
     this.loadingError = null
+    this.resolveOptions = resolveOptions
     // only load npm-shrinkwrap.json in dep trees, not package-lock
     this.shrinkwrapOnly = shrinkwrapOnly
   }
@@ -823,7 +826,7 @@ class Shrinkwrap {
           resolved,
           integrity,
           hasShrinkwrap,
-        } = Shrinkwrap.metaFromNode(node, this.path)
+        } = Shrinkwrap.metaFromNode(node, this.path, this.resolveOptions)
         node.resolved = node.resolved || resolved || null
         node.integrity = node.integrity || integrity || null
         node.hasShrinkwrap = node.hasShrinkwrap || hasShrinkwrap || false
@@ -879,15 +882,21 @@ class Shrinkwrap {
   [_updateWaitingNode] (loc) {
     const node = this[_awaitingUpdate].get(loc)
     this[_awaitingUpdate].delete(loc)
-    this.data.packages[loc] = Shrinkwrap.metaFromNode(node, this.path)
+    this.data.packages[loc] = Shrinkwrap.metaFromNode(
+      node,
+      this.path,
+      this.resolveOptions)
   }
 
   commit () {
     if (this.tree) {
       if (this.yarnLock) {
         this.yarnLock.fromTree(this.tree)
       }
-      const root = Shrinkwrap.metaFromNode(this.tree.target, this.path)
+      const root = Shrinkwrap.metaFromNode(
+        this.tree.target,
+        this.path,
+        this.resolveOptions)
       this.data.packages = {}
       if (Object.keys(root).length) {
         this.data.packages[''] = root
@@ -898,7 +907,10 @@ class Shrinkwrap {
           continue
         }
         const loc = relpath(this.path, node.path)
-        this.data.packages[loc] = Shrinkwrap.metaFromNode(node, this.path)
+        this.data.packages[loc] = Shrinkwrap.metaFromNode(
+          node,
+          this.path,
+          this.resolveOptions)
       }
     } else if (this[_awaitingUpdate].size > 0) {
       for (const loc of this[_awaitingUpdate].keys()) {
@@ -1006,7 +1018,7 @@ class Shrinkwrap {
         spec.type !== 'git' &&
         spec.type !== 'file' &&
         spec.type !== 'remote') {
-      lock.resolved = node.resolved
+      lock.resolved = overrideResolves(node, node.resolved, this.resolveOptions)
     }
 
     if (node.integrity) {

test/node.js

@@ -2842,3 +2842,26 @@ t.test('overrides', (t) => {
 
   t.end()
 })
+
+t.test('node with no edges in is not a registry dep', async t => {
+  const node = new Node({ path: '/foo' })
+  t.equal(node.isRegistryDependency, false)
+})
+
+t.test('node with non registry edge in is not a registry dep', async t => {
+  const root = new Node({ path: '/some/path', pkg: { dependencies: { registry: '', tar: '' } } })
+  const node = new Node({ pkg: { name: 'node', version: '1.0.0' }, parent: root })
+
+  new Node({ pkg: { name: 'registry', dependencies: { node: '^1.0.0' } }, parent: root })
+  new Node({ pkg: { name: 'tar', dependencies: { node: 'file:node' } }, parent: root })
+
+  t.equal(node.isRegistryDependency, false)
+})
+
+t.test('node with only registry edges in a registry dep', async t => {
+  const root = new Node({ path: '/some/path', pkg: { dependencies: { registry: '', tar: '' } } })
+  const node = new Node({ pkg: { name: 'node', version: '1.0.0' }, parent: root })
+  new Node({ pkg: { name: 'registry', dependencies: { node: '^1.0.0' } }, parent: root })
+
+  t.equal(node.isRegistryDependency, true)
+})

test/shrinkwrap.js

@@ -227,6 +227,121 @@ t.test('throws when attempting to access data before loading', t => {
   t.end()
 })
 
+t.only('resolveOptions', async t => {
+  const url = 'https://private.registry.org/deadbeef/registry/-/registry-1.2.3.tgz'
+  const someOtherRegistry = 'https://someother.registry.org/registry/-/registry-1.2.3.tgz'
+  const getData = async (resolveOptions) => {
+    const dir = t.testdir()
+    const meta = await Shrinkwrap.load({
+      path: dir,
+      resolveOptions,
+    })
+
+    const root = new Node({
+      pkg: {
+        name: 'root',
+        dependencies: {
+          registry: '^1.0.0',
+          'some-other-registry': '^1.0.0',
+          '@scope/some-package': '^1.0.0',
+          tar: url,
+        },
+      },
+      path: dir,
+      realpath: dir,
+      meta,
+    })
+
+    const registry = new Node({
+      pkg: { name: 'registry', version: '1.2.3' },
+      resolved: url,
+      integrity: 'sha512-registry',
+      parent: root,
+    })
+
+    const otherRegistry = new Node({
+      pkg: { name: 'some-other-registry', version: '1.2.3' },
+      resolved: someOtherRegistry,
+      integrity: 'sha512-registry',
+      parent: root,
+    })
+
+    const scopedOtherRegistry = new Node({
+      pkg: { name: '@scope/some-package', version: '1.2.3' },
+      resolved: someOtherRegistry,
+      integrity: 'sha512-registry',
+      parent: root,
+    })
+
+    const tar = new Node({
+      pkg: { name: 'tar', version: '1.2.3' },
+      resolved: url,
+      integrity: 'sha512-registry',
+      parent: root,
+    })
+
+    calcDepFlags(root)
+    meta.add(root)
+    return { data: meta.commit(), registry, tar, root, otherRegistry, scopedOtherRegistry }
+  }
+
+  await t.test('omitLockfileRegistryResolved', async t => {
+    const { data } = await getData({ omitLockfileRegistryResolved: true })
+    // registry dependencies in v2 packages and v1 dependencies should
+    // have resolved stripped.
+    t.strictSame(data.packages['node_modules/registry'].resolved, undefined)
+    t.strictSame(data.dependencies.registry.resolved, undefined)
+
+    // tar should have resolved because it is not a registry dep.
+    t.strictSame(data.packages['node_modules/tar'].resolved, url)
+    // v1 url dependencies never have resolved.
+    t.strictSame(data.dependencies.tar.resolved, undefined)
+  })
+
+  await t.test('omitLockfileRegistryResolved: false', async t => {
+    const { data } = await getData({ omitLockfileRegistryResolved: false })
+    t.strictSame(data.packages['node_modules/registry'].resolved, url)
+    t.strictSame(data.dependencies.registry.resolved, url)
+
+    t.strictSame(data.packages['node_modules/tar'].resolved, url)
+    // v1 url dependencies never have resolved.
+    t.strictSame(data.dependencies.tar.resolved, undefined)
+  })
+
+  await t.test('recordDefaultRegistry: true', async t => {
+    const { data } = await getData({
+      recordDefaultRegistry: true,
+      registry: 'https://private.registry.org/deadbeef',
+      '@scope:registry': 'https://someother.registry.org',
+    })
+
+    // unscoped packages that resolve to their configured registry should be
+    // record the default registry
+    t.strictSame(data.packages['node_modules/registry'].resolved,
+      'https://registry.npmjs.org/registry/-/registry-1.2.3.tgz')
+    t.strictSame(data.dependencies.registry.resolved,
+      'https://registry.npmjs.org/registry/-/registry-1.2.3.tgz')
+
+    // scoped packages that resolve to their configured registry should be
+    // record the default registry
+    t.strictSame(data.packages['node_modules/@scope/some-package'].resolved,
+      'https://registry.npmjs.org/registry/-/registry-1.2.3.tgz')
+    t.strictSame(data.dependencies['@scope/some-package'].resolved,
+      'https://registry.npmjs.org/registry/-/registry-1.2.3.tgz')
+
+    // packages with resolved urls that don't match the configured registry
+    // should record undefined so npm resolves their url again.
+    t.strictSame(data.packages['node_modules/some-other-registry'].resolved, undefined)
+    t.strictSame(data.dependencies['some-other-registry'].resolved, undefined)
+  })
+
+  t.test('metaFromNode default', async t => {
+    // test to cover options default.
+    const { registry } = await getData(undefined)
+    t.strictSame(Shrinkwrap.metaFromNode(registry, '').resolved, url)
+  })
+})
+
 t.test('construct metadata from node and package data', t => {
   const meta = new Shrinkwrap({ path: '/home/user/projects/root' })
   // fake load