1 files changed, 8 insertions, 10 deletions
diff --git a/activesupport/lib/active_support/duration.rb b/activesupport/lib/active_support/duration.rb
index e861a17426..5a64fc52cc 100644
--- a/activesupport/lib/active_support/duration.rb
+++ b/activesupport/lib/active_support/duration.rb
@@ -1,4 +1,3 @@
-require 'active_support/proxy_object'
 require 'active_support/core_ext/array/conversions'
 require 'active_support/core_ext/object/acts_like'
 
@@ -63,6 +62,10 @@ module ActiveSupport
       Duration === other && other.value.eql?(value)
     end
 
+    def hash
+      @value.hash
+    end
+
     def self.===(other) #:nodoc:
       other.is_a?(Duration)
     rescue ::NoMethodError
@@ -88,17 +91,19 @@ module ActiveSupport
         reduce(::Hash.new(0)) { |h,(l,r)| h[l] += r; h }.
         sort_by {|unit,  _ | [:years, :months, :days, :minutes, :seconds].index(unit)}.
         map     {|unit, val| "#{val} #{val == 1 ? unit.to_s.chop : unit.to_s}"}.
-        to_sentence(:locale => :en)
+        to_sentence(locale: ::I18n.default_locale)
     end
 
     def as_json(options = nil) #:nodoc:
       to_i
     end
 
-    def respond_to_missing?(method, include_private=false) #:nodoc
+    def respond_to_missing?(method, include_private=false) #:nodoc:
       @value.respond_to?(method, include_private)
     end
 
+    delegate :<=>, to: :value
+
     protected
 
       def sum(sign, time = ::Time.current) #:nodoc:
@@ -117,13 +122,6 @@ module ActiveSupport
 
     private
 
-      # We define it as a workaround to Ruby 2.0.0-p353 bug.
-      # For more information, check rails/rails#13055.
-      # Remove it when we drop support for 2.0.0-p353.
-      def ===(other) #:nodoc:
-        value === other
-      end
-
       def method_missing(method, *args, &block) #:nodoc:
         value.send(method, *args, &block)
       end