lib/flipper/middleware/memoizer.rb in flipper-0.11.0.beta1 vs lib/flipper/middleware/memoizer.rb in flipper-0.11.0.beta3

@@ -6,10 +6,13 @@
       # Public: Initializes an instance of the Memoizer middleware. The flipper
       # instance must be setup in the env of the request. You can do this by
       # using the Flipper::Middleware::SetupEnv middleware.
       #
       # app - The app this middleware is included in.
+      # opts - The Hash of options.
+      #        :preload_all - Boolean of whether or not to preload all features.
+      #        :preload - Array of Symbol feature names to preload.
       #
       # Examples
       #
       #   use Flipper::Middleware::Memoizer
       #
@@ -18,9 +21,13 @@
       #
       #   # using with preload specific features
       #   use Flipper::Middleware::Memoizer, preload: [:stats, :search, :some_feature]
       #
       def initialize(app, opts = {})
+        if opts.is_a?(Flipper::DSL) || opts.is_a?(Proc)
+          raise 'Flipper::Middleware::Memoizer no longer initializes with a flipper instance or block. Read more at: https://git.io/vSo31.' # rubocop:disable LineLength
+        end
+
         @app = app
         @opts = opts
       end
 
       def call(env)