lib/grape/formatter/serializable_hash.rb in grape-0.11.0 vs lib/grape/formatter/serializable_hash.rb in grape-0.12.0

@@ -1,27 +1,27 @@
 module Grape
   module Formatter
     module SerializableHash
       class << self
-        def call(object, env)
+        def call(object, _env)
           return object if object.is_a?(String)
           return MultiJson.dump(serialize(object)) if serializable?(object)
           return object.to_json if object.respond_to?(:to_json)
           MultiJson.dump(object)
         end
 
         private
 
         def serializable?(object)
-          object.respond_to?(:serializable_hash) || object.kind_of?(Array) && !object.map { |o| o.respond_to? :serializable_hash }.include?(false) || object.kind_of?(Hash)
+          object.respond_to?(:serializable_hash) || object.is_a?(Array) && !object.map { |o| o.respond_to? :serializable_hash }.include?(false) || object.is_a?(Hash)
         end
 
         def serialize(object)
           if object.respond_to? :serializable_hash
             object.serializable_hash
-          elsif object.kind_of?(Array) && !object.map { |o| o.respond_to? :serializable_hash }.include?(false)
+          elsif object.is_a?(Array) && !object.map { |o| o.respond_to? :serializable_hash }.include?(false)
             object.map(&:serializable_hash)
-          elsif object.kind_of?(Hash)
+          elsif object.is_a?(Hash)
             object.inject({}) do |h, (k, v)|
               h[k] = serialize(v)
               h
             end
           else