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-rw-r--r--actioncable/lib/action_cable/server/configuration.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/actioncable/lib/action_cable/server/configuration.rb b/actioncable/lib/action_cable/server/configuration.rb
index 17e0dee064..82fed81a18 100644
--- a/actioncable/lib/action_cable/server/configuration.rb
+++ b/actioncable/lib/action_cable/server/configuration.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
module ActionCable
module Server
# An instance of this configuration object is available via ActionCable.server.config, which allows you to tweak Action Cable configuration