Don't attach spec helpers to the env

spec/helpers/BrowserFlags.js

@@ -1,4 +1,4 @@
-(function(env) {
+(function() {
   function browserVersion(matchFn) {
     const userAgent = jasmine.getGlobal().navigator.userAgent;
     if (!userAgent) {
@@ -10,7 +10,7 @@
     return match ? parseFloat(match[1]) : void 0;
   }
 
-  env.firefoxVersion = browserVersion(function(userAgent) {
+  specHelpers.firefoxVersion = browserVersion(function(userAgent) {
     return /Firefox\/([0-9]{0,})/.exec(userAgent);
   });
-})(jasmine.getEnv());
+})();

spec/helpers/domHelpers.js

@@ -1,24 +1,20 @@
-(function(env) {
-  function domHelpers() {
-    let doc;
+(function() {
+  let doc;
 
-    if (typeof document !== 'undefined') {
-      doc = document;
-    } else {
-      const JSDOM = require('jsdom').JSDOM;
-      const dom = new JSDOM();
-      doc = dom.window.document;
-    }
-
-    return {
-      document: doc,
-      createElementWithClassName: function(className) {
-        const el = this.document.createElement('div');
-        el.className = className;
-        return el;
-      }
-    };
+  if (typeof document !== 'undefined') {
+    doc = document;
+  } else {
+    const JSDOM = require('jsdom').JSDOM;
+    const dom = new JSDOM();
+    doc = dom.window.document;
   }
 
-  env.domHelpers = domHelpers;
-})(jasmine.getEnv());
+  specHelpers.domHelpers = {
+    document: doc,
+    createElementWithClassName(className) {
+      const el = this.document.createElement('div');
+      el.className = className;
+      return el;
+    }
+  };
+})();

spec/helpers/init.js

@@ -0,0 +1 @@
+globalThis.specHelpers = {};

spec/helpers/integrationMatchers.js

@@ -1,5 +1,5 @@
-(function(env) {
-  env.registerIntegrationMatchers = function() {
+(function() {
+  specHelpers.registerIntegrationMatchers = function() {
     jasmine.addMatchers({
       toHaveFailedExpectationsForRunnable: function() {
         return {
@@ -51,4 +51,4 @@
       }
     });
   };
-})(jasmine.getEnv());
+})();