13 files changed, 14 insertions, 1 deletions
diff --git a/lib/json/add/bigdecimal.rb b/lib/json/add/bigdecimal.rb
index 0ef69f1..539daee 100644
--- a/lib/json/add/bigdecimal.rb
+++ b/lib/json/add/bigdecimal.rb
@@ -1,3 +1,4 @@
+#frozen_string_literal: false
 unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
   require 'json'
 end
diff --git a/lib/json/add/complex.rb b/lib/json/add/complex.rb
index 2723f60..28ef734 100644
--- a/lib/json/add/complex.rb
+++ b/lib/json/add/complex.rb
@@ -1,3 +1,4 @@
+#frozen_string_literal: false
 unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
   require 'json'
 end
@@ -25,4 +26,4 @@ class Complex
   def to_json(*)
     as_json.to_json
   end
-end
-\ No newline at end of file
+end
diff --git a/lib/json/add/core.rb b/lib/json/add/core.rb
index 77d9dc0..bfb017c 100644
--- a/lib/json/add/core.rb
+++ b/lib/json/add/core.rb
@@ -1,3 +1,4 @@
+#frozen_string_literal: false
 # This file requires the implementations of ruby core's custom objects for
 # serialisation/deserialisation.
 
diff --git a/lib/json/add/date.rb b/lib/json/add/date.rb
index 458d9eb..2552356 100644
--- a/lib/json/add/date.rb
+++ b/lib/json/add/date.rb
@@ -1,3 +1,4 @@
+#frozen_string_literal: false
 unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
   require 'json'
 end
diff --git a/lib/json/add/date_time.rb b/lib/json/add/date_time.rb
index a1009cf..38b0e86 100644
--- a/lib/json/add/date_time.rb
+++ b/lib/json/add/date_time.rb
@@ -1,3 +1,4 @@
+#frozen_string_literal: false
 unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
   require 'json'
 end
diff --git a/lib/json/add/exception.rb b/lib/json/add/exception.rb
index f4b150d..a107e5b 100644
--- a/lib/json/add/exception.rb
+++ b/lib/json/add/exception.rb
@@ -1,3 +1,4 @@
+#frozen_string_literal: false
 unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
   require 'json'
 end
diff --git a/lib/json/add/ostruct.rb b/lib/json/add/ostruct.rb
index a62f92f..7c13910 100644
--- a/lib/json/add/ostruct.rb
+++ b/lib/json/add/ostruct.rb
@@ -1,3 +1,4 @@
+#frozen_string_literal: false
 unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
   require 'json'
 end
diff --git a/lib/json/add/range.rb b/lib/json/add/range.rb
index 0df382c..93529fb 100644
--- a/lib/json/add/range.rb
+++ b/lib/json/add/range.rb
@@ -1,3 +1,4 @@
+#frozen_string_literal: false
 unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
   require 'json'
 end
diff --git a/lib/json/add/rational.rb b/lib/json/add/rational.rb
index ee39c20..356940b 100644
--- a/lib/json/add/rational.rb
+++ b/lib/json/add/rational.rb
@@ -1,3 +1,4 @@
+#frozen_string_literal: false
 unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
   require 'json'
 end
diff --git a/lib/json/add/regexp.rb b/lib/json/add/regexp.rb
index 9adf06c..a93866b 100644
--- a/lib/json/add/regexp.rb
+++ b/lib/json/add/regexp.rb
@@ -1,3 +1,4 @@
+#frozen_string_literal: false
 unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
   require 'json'
 end
diff --git a/lib/json/add/struct.rb b/lib/json/add/struct.rb
index e1e2480..e8395ed 100644
--- a/lib/json/add/struct.rb
+++ b/lib/json/add/struct.rb
@@ -1,3 +1,4 @@
+#frozen_string_literal: false
 unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
   require 'json'
 end
diff --git a/lib/json/add/symbol.rb b/lib/json/add/symbol.rb
index 6df77ca..74b13a4 100644
--- a/lib/json/add/symbol.rb
+++ b/lib/json/add/symbol.rb
@@ -1,3 +1,4 @@
+#frozen_string_literal: false
 unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
   require 'json'
 end
diff --git a/lib/json/add/time.rb b/lib/json/add/time.rb
index 1227508..b73acc4 100644
--- a/lib/json/add/time.rb
+++ b/lib/json/add/time.rb
@@ -1,3 +1,4 @@
+#frozen_string_literal: false
 unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
   require 'json'
 end