Init js namespace one time

app/assets/javascripts/new_design/application.js

@@ -10,6 +10,7 @@
 // Read Sprockets README (https://github.com/sstephenson/sprockets#sprockets-directives) for details
 // about supported directives.
 //
+//= require ./init
 //= require jquery
 //= require jquery_ujs
 //= require turbolinks

app/assets/javascripts/new_design/header.js

@@ -1,5 +1,3 @@
-window.TPS = window.TPS || {};
-
 $(document).on("click", "body", function () {
   $(".header-menu").removeClass("open fade-in-down");
 });

app/assets/javascripts/new_design/init.js

@@ -0,0 +1,2 @@
+// namespace
+window.TPS = window.TPS || {};