Only link if it's not undefined.

2 files changed, 14 insertions, 5 deletions

diff --git a/src/global/www/script/navigation.js b/src/global/www/script/navigation.js
index b036e03..ce2fc1b 100644
--- a/src/global/www/script/navigation.js
+++ b/src/global/www/script/navigation.js
@@ -19,5 +19,8 @@ function (url)
 tacticians_online.navigation.attach_to =
 function (app)
 {
-   app.ports.go_to.subscribe(tacticians_online.navigation.go_to);
+   if (app.ports.go_to !== undefined)
+   {
+      app.ports.go_to.subscribe(tacticians_online.navigation.go_to);
+   }
 }
diff --git a/src/global/www/script/session.js b/src/global/www/script/session.js
index 8d005b1..e6fd609 100644
--- a/src/global/www/script/session.js
+++ b/src/global/www/script/session.js
@@ -83,9 +83,15 @@ function (session)
 tacticians_online.session.attach_to =
 function (app)
 {
-   app.ports.store_new_session.subscribe(
-      tacticians_online.session.store_new_session
-   );
+   if (app.ports.store_new_session !== undefined)
+   {
+      app.ports.store_new_session.subscribe(
+         tacticians_online.session.store_new_session
+      );
+   }
 
-   app.ports.reset_session.subscribe(tacticians_online.session.reset);
+   if (app.ports.reset_session !== undefined)
+   {
+      app.ports.reset_session.subscribe(tacticians_online.session.reset);
+   }
 }