diff --git a/jslib b/jslib
index fdc6f7b1d23..1f83c3c1ba1 160000
--- a/jslib
+++ b/jslib
@@ -1 +1 @@
-Subproject commit fdc6f7b1d234c72724db47cbea6c94bff7ec0106
+Subproject commit 1f83c3c1ba14d2cdbc319ac060a08cc7c0911b5c
diff --git a/src/services/browserStorage.service.ts b/src/services/browserStorage.service.ts
index b2cbb969750..7a391f1f5e5 100644
--- a/src/services/browserStorage.service.ts
+++ b/src/services/browserStorage.service.ts
@@ -19,6 +19,10 @@ export default class BrowserStorageService implements StorageService {
         });
     }
 
+    async has(key: string): Promise<boolean> {
+        return this.get(key) != null;
+    }
+
     async save(key: string, obj: any): Promise<any> {
         if (obj == null) {
             // Fix safari not liking null in set