pack: add shasum and integrity info to preview

lib/pack.js

@@ -30,6 +30,7 @@ const pinflight = require('promise-inflight')
 const readJson = BB.promisify(require('read-package-json'))
 const tar = require('tar')
 const packlist = require('npm-packlist')
+const ssri = require('ssri')
 
 pack.usage = 'npm pack [[<@scope>/]<pkg>...]'
 
@@ -195,6 +196,10 @@ function logContents (tarball) {
     tarball.filename && {name: 'filename:', value: tarball.filename},
     {name: 'package size:', value: byteSize(tarball.size)},
     {name: 'unpacked size:', value: byteSize(tarball.unpackedSize)},
+    {name: 'shasum:', value: tarball.shasum},
+    {
+      name: 'integrity:',
+      value: tarball.integrity.toString().substr(0, 20) + '[...]' + tarball.integrity.toString().substr(80)},
     tarball.bundled.length && {name: 'bundled deps:', value: tarball.bundled.length},
     tarball.bundled.length && {name: 'bundled files:', value: tarball.entryCount - tarball.files.length},
     tarball.bundled.length && {name: 'own files:', value: tarball.files.length},
@@ -238,19 +243,29 @@ function getContents (pkg, target, filename, silent) {
     },
     strip: 1
   })
-    .then(() => BB.fromNode((cb) => fs.stat(target, cb)))
-    .then((stat) => ({
-      id: pkg._id,
-      name: pkg.name,
-      version: pkg.version,
-      from: pkg._from,
-      size: stat.size,
-      unpackedSize: totalEntrySize,
-      filename,
-      files,
-      entryCount: totalEntries,
-      bundled: Array.from(bundled)
-    }))
+    .then(() => BB.all([
+      BB.fromNode((cb) => fs.stat(target, cb)),
+      ssri.fromStream(fs.createReadStream(target), {
+        algorithms: ['sha1', 'sha512']
+      })
+    ]))
+    .then(([stat, integrity]) => {
+      const shasum = integrity['sha1'][0].hexDigest()
+      return {
+        id: pkg._id,
+        name: pkg.name,
+        version: pkg.version,
+        from: pkg._from,
+        size: stat.size,
+        unpackedSize: totalEntrySize,
+        shasum,
+        integrity: ssri.parse(integrity['sha512'][0]),
+        filename,
+        files,
+        entryCount: totalEntries,
+        bundled: Array.from(bundled)
+      }
+    })
 }
 
 const PASSTHROUGH_OPTS = [

lib/publish.js

@@ -178,7 +178,7 @@ function upload (arg, pkg, isRetry, cached) {
     }
 
     if (npm.config.get('dry-run')) {
-      log.info('publish', '--dry-run mode enabled. Skipping upload.')
+      log.verbose('publish', '--dry-run mode enabled. Skipping upload.')
       return BB.resolve()
     }