From be834a25982746ffd85252ff502df42bb88cb9d5 Mon Sep 17 00:00:00 2001
From: GitLab Bot <gitlab-bot@gitlab.com>
Date: Mon, 5 Oct 2020 13:54:15 +0000
Subject: Add latest changes from gitlab-org/gitlab@13-5-stable-ee

---
 spec/frontend/environment.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'spec/frontend/environment.js')

diff --git a/spec/frontend/environment.js b/spec/frontend/environment.js
index 35ca323f5a9..c958fb7ce03 100644
--- a/spec/frontend/environment.js
+++ b/spec/frontend/environment.js
@@ -1,4 +1,4 @@
-/* eslint-disable import/no-commonjs */
+/* eslint-disable import/no-commonjs, max-classes-per-file */
 
 const path = require('path');
 const { ErrorWithStack } = require('jest-util');
@@ -58,6 +58,14 @@ class CustomEnvironment extends JSDOMEnvironment {
       measure: () => null,
       getEntriesByName: () => [],
     });
+
+    this.global.PerformanceObserver = class {
+      /* eslint-disable no-useless-constructor, no-unused-vars, no-empty-function, class-methods-use-this */
+      constructor(callback) {}
+      disconnect() {}
+      observe(element, initObject) {}
+      /* eslint-enable no-useless-constructor, no-unused-vars, no-empty-function, class-methods-use-this */
+    };
   }
 
   async teardown() {
-- 
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