From b4b496fb4148cd2abc4e84692b245490f85f2e40 Mon Sep 17 00:00:00 2001
From: alschmiedt <aschmiedt@google.com>
Date: Mon, 12 Apr 2021 15:15:03 -0700
Subject: [PATCH] Reverts #4573

---
 package.json                 | 2 +-
 scripts/package/node/core.js | 6 ++----
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/package.json b/package.json
index c7e8eb500d5..b1491d69c05 100644
--- a/package.json
+++ b/package.json
@@ -92,6 +92,6 @@
     "yargs": "^16.0.3"
   },
   "dependencies": {
-    "jsdom": "16.5.2"
+    "jsdom": "15.2.1"
   }
 }
diff --git a/scripts/package/node/core.js b/scripts/package/node/core.js
index 70e1f9078fb..8f7745304be 100644
--- a/scripts/package/node/core.js
+++ b/scripts/package/node/core.js
@@ -23,10 +23,8 @@ Blockly.setLocale = function (locale) {
 // Override textToDomDocument and provide Node.js alternatives to DOMParser and
 // XMLSerializer.
 if (typeof Blockly.utils.global.document !== 'object') {
-  var JSDOM = require('jsdom').JSDOM;
-  var dom = new JSDOM();
-  Blockly.utils.global.DOMParser = dom.window.DOMParser;
-  Blockly.utils.global.XMLSerializer = dom.window.XMLSerializer;
+  Blockly.utils.global.DOMParser = require("jsdom/lib/jsdom/living").DOMParser;
+  Blockly.utils.global.XMLSerializer = require("jsdom/lib/jsdom/living").XMLSerializer;
   var doc = Blockly.utils.xml.textToDomDocument(
     '<xml xmlns="https://developers.google.com/blockly/xml"></xml>');
   Blockly.utils.xml.document = function() {