lib/rack/reducer/refinements.rb in rack-reducer-1.1.2 vs lib/rack/reducer/refinements.rb in rack-reducer-2.0.0

@@ -1,10 +1,10 @@
 # frozen_string_literal: true
 
 module Rack
-  module Reducer
-    # refine Proc and hash in this scope only
+  class Reducer
+    # Refine a few core classes in Rack::Reducer's scope only
     module Refinements
       refine Proc do
         def required_argument_names
           parameters.select { |type, _| type == :keyreq }.map(&:last)
         end
@@ -34,9 +34,15 @@
             hash[key.to_sym] = val.is_a?(Hash) ? val.symbolize_keys : val
           end
         end
 
         alias_method :to_unsafe_h, :to_h
+      end
+
+      refine NilClass do
+        def empty?
+          true
+        end
       end
     end
 
     private_constant :Refinements
   end