Fix issue with browser support for instanceof extended Error builtinsfallback-localstorage-cases

2 files changed, 4 insertions, 5 deletions

diff --git a/app/assets/javascripts/filtered_search/filtered_search_manager.js b/app/assets/javascripts/filtered_search/filtered_search_manager.js
index d8737463f01..9fea563370f 100644
--- a/app/assets/javascripts/filtered_search/filtered_search_manager.js
+++ b/app/assets/javascripts/filtered_search/filtered_search_manager.js
@@ -2,7 +2,6 @@ import FilteredSearchContainer from './container';
 import RecentSearchesRoot from './recent_searches_root';
 import RecentSearchesStore from './stores/recent_searches_store';
 import RecentSearchesService from './services/recent_searches_service';
-import RecentSearchesServiceError from './services/recent_searches_service_error';
 import eventHub from './event_hub';
 
 class FilteredSearchManager {
@@ -26,7 +25,7 @@ class FilteredSearchManager {
     // Fetch recent searches from localStorage
     this.fetchingRecentSearchesPromise = this.recentSearchesService.fetch()
       .catch((error) => {
-        if (error instanceof RecentSearchesServiceError) return undefined;
+        if (error.name === 'RecentSearchesServiceError') return undefined;
         // eslint-disable-next-line no-new
         new window.Flash('An error occured while parsing recent searches');
         // Gracefully fail to empty array
diff --git a/spec/javascripts/filtered_search/services/recent_searches_service_error_spec.js b/spec/javascripts/filtered_search/services/recent_searches_service_error_spec.js
index d11157f6e59..ea7c146fa4f 100644
--- a/spec/javascripts/filtered_search/services/recent_searches_service_error_spec.js
+++ b/spec/javascripts/filtered_search/services/recent_searches_service_error_spec.js
@@ -7,9 +7,9 @@ describe('RecentSearchesServiceError', () => {
     recentSearchesServiceError = new RecentSearchesServiceError();
   });
 
-  it('instantiates an instance of RecentSearchesServiceError and Error', () => {
-    expect(recentSearchesServiceError instanceof Error).toBeTruthy();
-    expect(recentSearchesServiceError instanceof RecentSearchesServiceError).toBeTruthy();
+  it('instantiates an instance of RecentSearchesServiceError and not an Error', () => {
+    expect(recentSearchesServiceError).toEqual(jasmine.any(RecentSearchesServiceError));
+    expect(recentSearchesServiceError.name).toBe('RecentSearchesServiceError');
   });
 
   it('should set a default message', () => {