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-rw-r--r--lib/logger/period.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/logger/period.rb b/lib/logger/period.rb
index bb8cffc2f8..76a8c3b011 100644
--- a/lib/logger/period.rb
+++ b/lib/logger/period.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
class Logger
module Period
module_function