1 files changed, 16 insertions, 14 deletions
diff --git a/activesupport/lib/active_support/hash_with_indifferent_access.rb b/activesupport/lib/active_support/hash_with_indifferent_access.rb
index 74a603c05d..d3f7b46e77 100644
--- a/activesupport/lib/active_support/hash_with_indifferent_access.rb
+++ b/activesupport/lib/active_support/hash_with_indifferent_access.rb
@@ -40,6 +40,12 @@ module ActiveSupport
   #   rgb = { black: '#000000', white: '#FFFFFF' }.with_indifferent_access
   #
   # which may be handy.
+  #
+  # To access this class outside of Rails, require the core extension with:
+  #
+  #   require "active_support/core_ext/hash/indifferent_access"
+  #
+  # which will, in turn, require this file.
   class HashWithIndifferentAccess < Hash
     # Returns +true+ so that <tt>Array#extract_options!</tt> finds members of
     # this class.
@@ -78,15 +84,6 @@ module ActiveSupport
       end
     end
 
-    def self.new_from_hash_copying_default(hash)
-      ActiveSupport::Deprecation.warn(<<-MSG.squish)
-        `ActiveSupport::HashWithIndifferentAccess.new_from_hash_copying_default`
-        has been deprecated, and will be removed in Rails 5.1. The behavior of
-        this method is now identical to the behavior of `.new`.
-      MSG
-      new(hash)
-    end
-
     def self.[](*args)
       new.merge!(Hash[*args])
     end
@@ -231,7 +228,7 @@ module ActiveSupport
 
     # Same semantics as +reverse_merge+ but modifies the receiver in-place.
     def reverse_merge!(other_hash)
-      replace(reverse_merge( other_hash ))
+      replace(reverse_merge(other_hash))
     end
 
     # Replaces the contents of this hash with other_hash.
@@ -267,6 +264,11 @@ module ActiveSupport
       dup.tap { |hash| hash.reject!(*args, &block) }
     end
 
+    def transform_values(*args, &block)
+      return to_enum(:transform_values) unless block_given?
+      dup.tap { |hash| hash.transform_values!(*args, &block) }
+    end
+
     # Convert to a regular hash with string keys.
     def to_hash
       _new_hash = Hash.new
@@ -278,12 +280,12 @@ module ActiveSupport
       _new_hash
     end
 
-    protected
-      def convert_key(key)
+    private
+      def convert_key(key) # :doc:
         key.kind_of?(Symbol) ? key.to_s : key
       end
 
-      def convert_value(value, options = {})
+      def convert_value(value, options = {}) # :doc:
         if value.is_a? Hash
           if options[:for] == :to_hash
             value.to_hash
@@ -300,7 +302,7 @@ module ActiveSupport
         end
       end
 
-      def set_defaults(target)
+      def set_defaults(target) # :doc:
         if default_proc
           target.default_proc = default_proc.dup
         else