Installing dependencies.

node_modules/npm/lib/commands/pack.js

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+const pacote = require('pacote')
+const libpack = require('libnpmpack')
+const npa = require('npm-package-arg')
+const log = require('../utils/log-shim')
+const { getContents, logTar } = require('../utils/tar.js')
+const BaseCommand = require('../base-command.js')
+
+class Pack extends BaseCommand {
+  static description = 'Create a tarball from a package'
+  static name = 'pack'
+  static params = [
+    'dry-run',
+    'json',
+    'pack-destination',
+    'workspace',
+    'workspaces',
+    'include-workspace-root',
+  ]
+
+  static usage = ['<package-spec>']
+  static ignoreImplicitWorkspace = false
+
+  async exec (args) {
+    if (args.length === 0) {
+      args = ['.']
+    }
+
+    const unicode = this.npm.config.get('unicode')
+    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')
+      }
+      manifests.push({ arg, manifest })
+    }
+
+    // Load tarball names up for printing afterward to isolate from the
+    // noise generated during packing
+    const tarballs = []
+    for (const { arg, manifest } of manifests) {
+      const tarballData = await libpack(arg, {
+        ...this.npm.flatOptions,
+        prefix: this.npm.localPrefix,
+        workspaces: this.workspacePaths,
+      })
+      const pkgContents = await getContents(manifest, tarballData)
+      tarballs.push(pkgContents)
+    }
+
+    if (json) {
+      this.npm.output(JSON.stringify(tarballs, null, 2))
+      return
+    }
+
+    for (const tar of tarballs) {
+      logTar(tar, { 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) {
+      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