style: update with rubocop

Rakefile

@@ -9,6 +9,7 @@ def fix_babel_config(path)
     FileUtils.cp("#{__dir__}/babel.config.json", Dir.pwd)
   end
 end
+
 def install_module(path)
   Dir.chdir(path) do
     system("npm i @babel/plugin-proposal-private-property-in-object")