lib: use Object.create(null) directly

After V8 5.6, using Object.create(null) directly is now faster than
using a constructor for map-like objects.

PR-URL: https://github.com/nodejs/node/pull/11930
Refs: https://github.com/emberjs/ember.js/issues/15001
Refs: https://crrev.com/532c16eca071df3ec8eed394dcebb932ef584ee6
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/url.js b/lib/url.js
index 395a583cb7..4b2ef9b68e 100644
--- a/lib/url.js
+++ b/lib/url.js
@@ -23,7 +23,7 @@
 
 const { toASCII } = process.binding('config').hasIntl ?
   process.binding('icu') : require('punycode');
-const { StorageObject, hexTable } = require('internal/querystring');
+const { hexTable } = require('internal/querystring');
 const internalUrl = require('internal/url');
 exports.parse = urlParse;
 exports.resolve = urlResolve;
@@ -197,7 +197,7 @@ Url.prototype.parse = function(url, parseQueryString, slashesDenoteHost) {
         }
       } else if (parseQueryString) {
         this.search = '';
-        this.query = new StorageObject();
+        this.query = Object.create(null);
       }
       return this;
     }
@@ -390,7 +390,7 @@ Url.prototype.parse = function(url, parseQueryString, slashesDenoteHost) {
   } else if (parseQueryString) {
     // no query string, but parseQueryString still requested
     this.search = '';
-    this.query = new StorageObject();
+    this.query = Object.create(null);
   }
 
   var firstIdx = (questionIdx !== -1 &&