lib/grape/middleware/base.rb in grape-1.2.5 vs lib/grape/middleware/base.rb in grape-1.3.0

@@ -1,14 +1,16 @@
+# frozen_string_literal: true
+
 require 'grape/dsl/headers'
 
 module Grape
   module Middleware
     class Base
       include Helpers
 
       attr_reader :app, :env, :options
-      TEXT_HTML = 'text/html'.freeze
+      TEXT_HTML = 'text/html'
 
       include Grape::DSL::Headers
 
       # @param [Rack Application] app The standard argument for a Rack middleware.
       # @param [Hash] options A hash of options, simply stored for use by subclasses.
@@ -21,10 +23,10 @@
       def default_options
         {}
       end
 
       def call(env)
-        dup.call!(env)
+        dup.call!(env).to_a
       end
 
       def call!(env)
         @env = env
         before