lib/active_support/notifications/instrumenter.rb in activesupport-5.1.7 vs lib/active_support/notifications/instrumenter.rb in activesupport-5.2.0.beta1

@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 require "securerandom"
 
 module ActiveSupport
   module Notifications
     # Instrumenters are stored in a thread local.