1 files changed, 44 insertions, 0 deletions
diff --git a/railties/lib/rails/dev_caching.rb b/railties/lib/rails/dev_caching.rb
new file mode 100644
index 0000000000..ff629b2527
--- /dev/null
+++ b/railties/lib/rails/dev_caching.rb
@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+require "fileutils"
+
+module Rails
+  module DevCaching # :nodoc:
+    class << self
+      FILE = "tmp/caching-dev.txt"
+
+      def enable_by_file
+        FileUtils.mkdir_p("tmp")
+
+        if File.exist?(FILE)
+          delete_cache_file
+          puts "Development mode is no longer being cached."
+        else
+          create_cache_file
+          puts "Development mode is now being cached."
+        end
+
+        FileUtils.touch "tmp/restart.txt"
+      end
+
+      def enable_by_argument(caching)
+        FileUtils.mkdir_p("tmp")
+
+        if caching
+          create_cache_file
+        elsif caching == false && File.exist?(FILE)
+          delete_cache_file
+        end
+      end
+
+      private
+        def create_cache_file
+          FileUtils.touch FILE
+        end
+
+        def delete_cache_file
+          File.delete FILE
+        end
+    end
+  end
+end