1 files changed, 3 insertions, 0 deletions
diff --git a/js/src/tab.js b/js/src/tab.js
index 4b311c24e..1283881e4 100644
--- a/js/src/tab.js
+++ b/js/src/tab.js
@@ -234,6 +234,9 @@ const Tab = (($) => {
         }
 
         if (typeof config === 'string') {
+          if (data[config] === undefined) {
+            throw new Error(`No method named "${config}"`)
+          }
           data[config]()
         }
       })