fixes

src/util-frontend.js

@@ -51,7 +51,22 @@ export function timezoneList() {
 }
 
 export function setPageLocale() {
-    const html = document.documentElement 
+    const html = document.documentElement
     html.setAttribute('lang', currentLocale() )
     html.setAttribute('dir', localeDirection() )
-  }
+}
+
+export function jwtDecrypt(token) {
+    const base64Url = token.split(".")[1];
+    const base64 = base64Url.replace(/-/g, "+").replace(/_/g, "/");
+    const jsonPayload = decodeURIComponent(
+      atob(base64)
+        .split("")
+        .map(function(c) {
+            return "%" + ("00" + c.charCodeAt(0).toString(16)).slice(-2);
+        })
+        .join("")
+    );
+
+    return JSON.parse(jsonPayload);
+}