Fix rubocop

Guardfile

@@ -3,7 +3,7 @@
 # More info at https://github.com/guard/guard#readme
 
 directories %w(lib spec) \
-  .select { |d| Dir.exists?(d) ? d : UI.warning("Directory #{d} does not exist") }
+  .select { |d| Dir.exist?(d) ? d : UI.warning("Directory #{d} does not exist") }
 
 ## Note: if you are using the `directories` clause above and you are not
 ## watching the project directory ('.'), then you will want to move

lib/mini_profiler/config.rb

@@ -97,7 +97,9 @@ def self.default
 
       # redefined - since the accessor defines it first
       undef :authorization_mode=
+      # rubocop:disable Lint/DuplicateMethods
       def authorization_mode=(mode)
+        # rubocop:enable Lint/DuplicateMethods
         if mode == :whitelist
           warn "[DEPRECATION] `:whitelist` authorization mode is deprecated. Please use `:allow_authorized` instead."
 

lib/mini_profiler/snapshots_transporter.rb

@@ -9,9 +9,11 @@ class << self
     def transported_snapshots_count
       @@transported_snapshots_count
     end
+
     def successful_http_requests_count
       @@successful_http_requests_count
     end
+
     def failed_http_requests_count
       @@failed_http_requests_count
     end

lib/mini_profiler/storage/file_store.rb

@@ -91,8 +91,6 @@ def initialize(args = nil)
         end
 
         at_exit { t[:should_exit] = true }
-
-        t
       end
 
       def save(page_struct)

lib/mini_profiler/timer_struct/base.rb

@@ -22,7 +22,6 @@ def [](name)
 
         def []=(name, val)
           attributes[name] = val
-          self
         end
 
         def to_json(*a)

lib/mini_profiler/views.rb

@@ -77,7 +77,7 @@ def get_profile_script(env)
         script = ::File.read(::File.expand_path('../html/profile_handler.js', ::File.dirname(__FILE__)))
         # replace the variables
         settings.each do |k, v|
-          regex = Regexp.new("\\{#{k.to_s}\\}")
+          regex = Regexp.new("\\{#{k}\\}")
           script.gsub!(regex, v.to_s)
         end