1 files changed, 104 insertions, 0 deletions
diff --git a/lib/commands/pack.js b/lib/commands/pack.js
new file mode 100644
index 000000000..013e88b44
--- /dev/null
+++ b/lib/commands/pack.js
@@ -0,0 +1,104 @@
+const util = require('util')
+const log = require('npmlog')
+const pacote = require('pacote')
+const libpack = require('libnpmpack')
+const npa = require('npm-package-arg')
+const path = require('path')
+
+const { getContents, logTar } = require('../utils/tar.js')
+
+const writeFile = util.promisify(require('fs').writeFile)
+
+const BaseCommand = require('../base-command.js')
+
+class Pack extends BaseCommand {
+  /* istanbul ignore next - see test/lib/load-all-commands.js */
+  static get description () {
+    return 'Create a tarball from a package'
+  }
+
+  /* istanbul ignore next - see test/lib/load-all-commands.js */
+  static get name () {
+    return 'pack'
+  }
+
+  /* istanbul ignore next - see test/lib/load-all-commands.js */
+  static get params () {
+    return [
+      'dry-run',
+      'json',
+      'pack-destination',
+      'workspace',
+      'workspaces',
+      'include-workspace-root',
+    ]
+  }
+
+  /* istanbul ignore next - see test/lib/load-all-commands.js */
+  static get usage () {
+    return ['[[<@scope>/]<pkg>...]']
+  }
+
+  async exec (args) {
+    if (args.length === 0)
+      args = ['.']
+
+    const unicode = this.npm.config.get('unicode')
+    const dryRun = this.npm.config.get('dry-run')
+    const json = this.npm.config.get('json')
+
+    // Get the manifests and filenames first so we can bail early on manifest
+    // errors before making any tarballs
+    const manifests = []
+    for (const arg of args) {
+      const spec = npa(arg)
+      const manifest = await pacote.manifest(spec, this.npm.flatOptions)
+      if (!manifest._id)
+        throw new Error('Invalid package, must have name and version')
+
+      const filename = `${manifest.name}-${manifest.version}.tgz`
+        .replace(/^@/, '').replace(/\//, '-')
+      manifests.push({ arg, filename, manifest })
+    }
+
+    // Load tarball names up for printing afterward to isolate from the
+    // noise generated during packing
+    const tarballs = []
+    for (const { arg, filename, manifest } of manifests) {
+      const tarballData = await libpack(arg, this.npm.flatOptions)
+      const pkgContents = await getContents(manifest, tarballData)
+      const tarballFilename = path.resolve(this.npm.config.get('pack-destination'), filename)
+
+      if (!dryRun)
+        await writeFile(tarballFilename, tarballData)
+
+      tarballs.push(pkgContents)
+    }
+
+    if (json) {
+      this.npm.output(JSON.stringify(tarballs, null, 2))
+      return
+    }
+
+    for (const tar of tarballs) {
+      logTar(tar, { log, unicode })
+      this.npm.output(tar.filename.replace(/^@/, '').replace(/\//, '-'))
+    }
+  }
+
+  async execWorkspaces (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.exec(args)
+    }
+
+    await this.setWorkspaces(filters)
+    return this.exec([...this.workspacePaths, ...args.filter(a => a !== '.')])
+  }
+}
+module.exports = Pack