Fix Node v10 and Node v11 support

Closes #2795.

lib/jsdom/browser/Window.js

@@ -37,21 +37,23 @@ const WindowEventHandlersImpl = require("../living/nodes/WindowEventHandlers-imp
 module.exports = Window;
 const { installInterfaces } = require("../living/interfaces");
 
+const jsGlobalEntriesToInstall = Object.entries(jsGlobals).filter(([name]) => name in global);
+
 // https://html.spec.whatwg.org/#the-window-object
 function setupWindow(windowInstance, { runScripts }) {
   if (runScripts === "outside-only" || runScripts === "dangerously") {
     contextifyWindow(windowInstance);
 
     // Without this, these globals will only appear to scripts running inside the context using vm.runScript; they will
     // not appear to scripts running from the outside, including to JSDOM implementation code.
-    for (const [globalName, globalPropDesc] of Object.entries(jsGlobals)) {
+    for (const [globalName, globalPropDesc] of jsGlobalEntriesToInstall) {
       const propDesc = { ...globalPropDesc, value: vm.runInContext(globalName, windowInstance) };
       Object.defineProperty(windowInstance, globalName, propDesc);
     }
   } else {
     // Without contextifying the window, none of the globals will exist. So, let's at least alias them from the Node.js
     // context. See https://github.com/jsdom/jsdom/issues/2727 for more background and discussion.
-    for (const [globalName, globalPropDesc] of Object.entries(jsGlobals)) {
+    for (const [globalName, globalPropDesc] of jsGlobalEntriesToInstall) {
       const propDesc = { ...globalPropDesc, value: global[globalName] };
       Object.defineProperty(windowInstance, globalName, propDesc);
     }