3 files changed, 9 insertions, 8 deletions

diff --git a/lib/shrinkwrap.js b/lib/shrinkwrap.js
index 85e0b81db..75fe0dd95 100644
--- a/lib/shrinkwrap.js
+++ b/lib/shrinkwrap.js
@@ -204,9 +204,9 @@ function updateLockfileMetadata (pkginfo, pkgJson) {
   const newPkg = {}
   let metainfoWritten = false
   const metainfo = new Set([
-    'createdWith',
     'lockfileVersion',
-    'packageIntegrity'
+    'packageIntegrity',
+    'preserveSymlinks'
   ])
   Object.keys(pkginfo).forEach((k) => {
     if (k === 'dependencies') {
@@ -225,7 +225,9 @@ function updateLockfileMetadata (pkginfo, pkgJson) {
   function writeMetainfo (pkginfo) {
     pkginfo.lockfileVersion = PKGLOCK_VERSION
     pkginfo.packageIntegrity = pkgJson && pkgSri.hash(pkgJson)
-    pkginfo.preserveSymlinks = process.env.NODE_PRESERVE_SYMLINKS
+    if (process.env.NODE_PRESERVE_SYMLINKS) {
+      pkginfo.preserveSymlinks = process.env.NODE_PRESERVE_SYMLINKS
+    }
     metainfoWritten = true
   }
   return newPkg
diff --git a/test/tap/shrinkwrap-empty-deps.js b/test/tap/shrinkwrap-empty-deps.js
index 734bd1738..eeb5e656e 100644
--- a/test/tap/shrinkwrap-empty-deps.js
+++ b/test/tap/shrinkwrap-empty-deps.js
@@ -4,10 +4,8 @@ const common = require('../common-tap.js')
 const fs = require('fs')
 const mkdirp = require('mkdirp')
 const mr = require('npm-registry-mock')
-const npm = require('../../lib/npm.js')
 const osenv = require('osenv')
 const path = require('path')
-const pkgSri = require('../../lib/utils/package-integrity.js')
 const rimraf = require('rimraf')
 const test = require('tap').test
 
diff --git a/test/tap/shrinkwrap-extra-metadata.js b/test/tap/shrinkwrap-extra-metadata.js
index b68b20356..c5f60e4c2 100644
--- a/test/tap/shrinkwrap-extra-metadata.js
+++ b/test/tap/shrinkwrap-extra-metadata.js
@@ -13,7 +13,8 @@ const test = require('tap').test
 
 const pkg = path.join(__dirname, path.basename(__filename, '.js'))
 
-const EXEC_OPTS = { cwd: pkg }
+const EXEC_OPTS = {
+  cwd: pkg }
 
 const json = {
   author: 'Rockbert',
@@ -41,7 +42,7 @@ test('adds additional metadata fields from the pkglock spec', function (t) {
         '--loglevel', 'silent',
         'shrinkwrap'
       ],
-      EXEC_OPTS,
+      { cwd: pkg, env: { NODE_PRESERVE_SYMLINKS: 'foo' } },
       function (err, code, stdout, stderr) {
         t.ifError(err, 'shrinkwrap ran without issue')
         t.notOk(code, 'shrinkwrap ran without raising error code')
@@ -54,7 +55,7 @@ test('adds additional metadata fields from the pkglock spec', function (t) {
               'version': '0.0.0',
               'lockfileVersion': npm.lockfileVersion,
               'packageIntegrity': pkgSri.hash(json),
-              'preserveSymlinks': process.env.NODE_PRESERVE_SYMLINKS
+              'preserveSymlinks': 'foo'
             },
             JSON.parse(desired),
             'shrinkwrap wrote the expected metadata fields'