feat(pack): add workspace support

PR-URL: #3033
Credit: @wraithgar
Close: #3033
Reviewed-by: @darcyclarke

docs/content/commands/npm-pack.md

@@ -10,6 +10,25 @@ description: Create a tarball from a package
 npm pack [[<@scope>/]<pkg>...] [--dry-run]
 ```
 
+### Configuration
+
+#### dry-run
+
+Do everything that pack usually does without actually packing anything.
+That is, report on what would have gone into the tarball, but nothing
+else.
+
+#### workspaces
+
+Enables workspaces context while creating tarballs. Tarballs for each
+workspaces will be generated.
+
+#### workspace
+
+Enables workspaces context and limits results to only those specified by
+this config item.  Tarballs will only be generated for the packages
+named in the workspaces given here.
+
 ### Description
 
 For anything that's installable (that is, a package folder, tarball,
@@ -23,10 +42,6 @@ overwritten the second time.
 
 If no arguments are supplied, then npm packs the current package folder.
 
-The `--dry-run` argument will do everything that pack usually does without
-actually packing anything.  That is, it reports on what would have gone
-into the tarball, but nothing else.
-
 ### See Also
 
 * [npm-packlist package](http://npm.im/npm-packlist)

lib/pack.js

@@ -3,6 +3,7 @@ const log = require('npmlog')
 const pacote = require('pacote')
 const libpack = require('libnpmpack')
 const npa = require('npm-package-arg')
+const getWorkspaces = require('./workspaces/get-workspaces.js')
 
 const { getContents, logTar } = require('./utils/tar.js')
 
@@ -23,7 +24,7 @@ class Pack extends BaseCommand {
 
   /* istanbul ignore next - see test/lib/load-all-commands.js */
   static get params () {
-    return ['dry-run']
+    return ['dry-run', 'workspace', 'workspaces']
   }
 
   /* istanbul ignore next - see test/lib/load-all-commands.js */
@@ -35,6 +36,10 @@ class Pack extends BaseCommand {
     this.pack(args).then(() => cb()).catch(cb)
   }
 
+  execWorkspaces (args, filters, cb) {
+    this.packWorkspaces(args, filters).then(() => cb()).catch(cb)
+  }
+
   async pack (args) {
     if (args.length === 0)
       args = ['.']
@@ -62,5 +67,21 @@ class Pack extends BaseCommand {
       this.npm.output(tar.filename.replace(/^@/, '').replace(/\//, '-'))
     }
   }
+
+  async packWorkspaces (args, filters) {
+    // If they either ask for nothing, or explicitly include '.' in the args,
+    // we effectively translate that into each workspace requested
+
+    const useWorkspaces = args.length === 0 || args.includes('.')
+
+    if (!useWorkspaces) {
+      this.npm.log.warn('Ignoring workspaces for specified package(s)')
+      return this.pack(args)
+    }
+
+    const workspaces =
+      await getWorkspaces(filters, { path: this.npm.localPrefix })
+    return this.pack([...workspaces.values(), ...args.filter(a => a !== '.')])
+  }
 }
 module.exports = Pack

lib/view.js

@@ -151,7 +151,7 @@ class View extends BaseCommand {
 
     const local = /^\.@/.test(pkg) || pkg === '.'
     if (!local) {
-      this.npm.log.warn('Ignoring workspaces for remote package')
+      this.npm.log.warn('Ignoring workspaces for specified package(s)')
       return this.view([pkg, ...args])
     }
     let wholePackument = false

tap-snapshots/test-lib-utils-npm-usage.js-TAP.test.js

@@ -625,7 +625,7 @@ All commands:
                     npm pack [[<@scope>/]<pkg>...]
                     
                     Options:
-                    [--dry-run]
+                    [--dry-run] [-w|--workspace <workspace-name> [-w|--workspace <workspace-name> ...]] [-ws|--workspaces]
                     
                     Run "npm help pack" for more info
 

tap-snapshots/test-lib-view.js-TAP.test.js

@@ -450,7 +450,7 @@ dist-tags:
 `
 
 exports[`test/lib/view.js TAP workspaces remote package name > must match snapshot 1`] = `
-Ignoring workspaces for remote package
+Ignoring workspaces for specified package(s)
 `
 
 exports[`test/lib/view.js TAP workspaces remote package name > must match snapshot 2`] = `

test/fixtures/mock-npm.js

@@ -2,10 +2,24 @@
 // npm.config You still need a separate flatOptions but this is the first step
 // to eventually just using npm itself
 
+const mockLog = {
+  clearProgress: () => {},
+  disableProgress: () => {},
+  enableProgress: () => {},
+  http: () => {},
+  info: () => {},
+  levels: [],
+  notice: () => {},
+  pause: () => {},
+  silly: () => {},
+  verbose: () => {},
+  warn: () => {},
+}
 const mockNpm = (base = {}) => {
   const config = base.config || {}
   const flatOptions = base.flatOptions || {}
   return {
+    log: mockLog,
     ...base,
     flatOptions,
     config: {

test/lib/pack.js

@@ -1,6 +1,7 @@
 const t = require('tap')
 const requireInject = require('require-inject')
 const mockNpm = require('../fixtures/mock-npm')
+const pacote = require('pacote')
 
 const OUTPUT = []
 const output = (...msg) => OUTPUT.push(msg)
@@ -11,6 +12,16 @@ const libnpmpack = async (spec, opts) => {
 
   return ''
 }
+const mockPacote = {
+  manifest: (spec) => {
+    if (spec.type === 'directory')
+      return pacote.manifest(spec)
+    return {
+      name: spec.name || 'test-package',
+      version: spec.version || '1.0.0-test',
+    }
+  },
+}
 
 t.afterEach(cb => {
   OUTPUT.length = 0
@@ -152,3 +163,95 @@ t.test('should log pack contents', (t) => {
     t.end()
   })
 })
+
+t.test('workspaces', (t) => {
+  const testDir = t.testdir({
+    'package.json': JSON.stringify({
+      name: 'workspaces-test',
+      version: '1.0.0',
+      workspaces: ['workspace-a', 'workspace-b'],
+    }, null, 2),
+    'workspace-a': {
+      'package.json': JSON.stringify({
+        name: 'workspace-a',
+        version: '1.0.0',
+      }),
+    },
+    'workspace-b': {
+      'package.json': JSON.stringify({
+        name: 'workspace-b',
+        version: '1.0.0',
+      }),
+    },
+  })
+  const Pack = requireInject('../../lib/pack.js', {
+    libnpmpack,
+    pacote: mockPacote,
+    npmlog: {
+      notice: () => {},
+      showProgress: () => {},
+      clearProgress: () => {},
+    },
+  })
+  const npm = mockNpm({
+    localPrefix: testDir,
+    config: {
+      unicode: false,
+      json: false,
+      'dry-run': false,
+    },
+    output,
+  })
+  const pack = new Pack(npm)
+
+  t.test('all workspaces', (t) => {
+    pack.execWorkspaces([], [], er => {
+      if (er)
+        throw er
+
+      t.strictSame(OUTPUT, [
+        ['workspace-a-1.0.0.tgz'],
+        ['workspace-b-1.0.0.tgz'],
+      ])
+      t.end()
+    })
+  })
+
+  t.test('all workspaces, `.` first arg', (t) => {
+    pack.execWorkspaces(['.'], [], er => {
+      if (er)
+        throw er
+
+      t.strictSame(OUTPUT, [
+        ['workspace-a-1.0.0.tgz'],
+        ['workspace-b-1.0.0.tgz'],
+      ])
+      t.end()
+    })
+  })
+
+  t.test('one workspace', (t) => {
+    pack.execWorkspaces([], ['workspace-a'], er => {
+      if (er)
+        throw er
+
+      t.strictSame(OUTPUT, [
+        ['workspace-a-1.0.0.tgz'],
+      ])
+      t.end()
+    })
+  })
+
+  t.test('specific package', (t) => {
+    pack.execWorkspaces(['abbrev'], [], er => {
+      if (er)
+        throw er
+
+      t.strictSame(OUTPUT, [
+        ['abbrev-1.0.0-test.tgz'],
+      ])
+      t.end()
+    })
+  })
+  t.end()
+})