diff --git a/lib/jasmine/headless.rb b/lib/jasmine/headless.rb
index 33ee28c..4503e8e 100644
--- a/lib/jasmine/headless.rb
+++ b/lib/jasmine/headless.rb
@@ -36,9 +36,26 @@ module Jasmine
       def root
         @root ||= Pathname(File.expand_path('../../..', __FILE__))
       end
+
+      def warn(message)
+        output.puts message if show_warnings?
+      end
+
+      def show_warnings=(show)
+        @show_warnings = show
+      end
+
+      def show_warnings?
+        @show_warnings = true if @show_warnings.nil?
+
+        @show_warnings
+      end
+
+      def output
+        $stdout
+      end
     end
   end
 end
 
 require 'jasmine/headless/errors'
-