And print the value.

diff --git a/lib/Catalyst.pm b/lib/Catalyst.pm
index 284f815..6d860bb 100644 (file)
--- a/lib/Catalyst.pm
+++ b/lib/Catalyst.pm
@@ -2185,9 +2185,10 @@ sub setup_component {
         my $metaclass = Moose::Util::find_meta($component);
         my $method_meta = $metaclass->find_method_by_name('COMPONENT');
         my $component_method_from = $method_meta->associated_metaclass->name;
+        my $value = defined($instance) ? $instance : 'undef';
         Catalyst::Exception->throw(
             message =>
-            qq/Couldn't instantiate component "$component", COMPONENT() method (from $component_method_from) didn't return an object-like value./
+            qq/Couldn't instantiate component "$component", COMPONENT() method (from $component_method_from) didn't return an object-like value (value was $value)./
         );
     }
     return $instance;