Fix #68: PopStateEvent.state may be null

cmb69 · May 24, 2021 · 3305902 · 3305902
1 parent 8ee4bd7
commit 3305902
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/js/calendar.min.js b/js/calendar.min.js
@@ -72,7 +72,7 @@ class CalendarWidget {
      * @param {PopStateEvent} event
      */
     onPopState(event) {
-        if ("calendar_url" in event.state) {
+        if (event.state && "calendar_url" in event.state) {
             this.retrieveCalendar(event.state.calendar_url, true);
         }
     }