fixed for node 12.x

egg- · Nov 4, 2022 · a529b4d · a529b4d
1 parent ca79817
commit a529b4d
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/lib/courier/usps.js b/lib/courier/usps.js
@@ -30,7 +30,10 @@ var parser = {
     var $history = $('.tracking-progress-bar-status-container').find('.tb-step')
 
     $history.each((index, element) => {
-      if (element.attribs?.class.indexOf('toggle-history-container') !== -1) {
+      if (
+        element.attribs &&
+        (element.attribs.class || '').indexOf('toggle-history-container') !== -1
+      ) {
         return
       }