discourse/app/views/common/_discourse_javascript.html.erb

<script>
  window.assetPath = (function(){

    // TODO: automate this to grab from the manifest, Rails voodoo should be able to get it
    var map = {
      'defer/html-sanitizer-bundle': <%= asset_path('defer/html-sanitizer-bundle.js').inspect.html_safe %>,
      'defer/fastclick': <%= asset_path('defer/fastclick.js').inspect.html_safe %>
    };

    var assetPath = function(asset){
      return map[asset];
    };

    return assetPath;
  })();
</script>

<%- if mini_profiler_enabled? %>
  <%- Rack::MiniProfiler.step "application" do %>
    <%= javascript_include_tag "application" %>
  <%-end%>

  <%- Rack::MiniProfiler.step "admin" do %>
    <%= javascript_include_tag "admin"%>
  <%-end%>
<%- else %>
  <%= javascript_include_tag "application" %>
  <%- if admin? %>
    <%= javascript_include_tag "admin"%>
  <%- end %>
<%- end%>

<script>
  Discourse.CDN = '<%= Rails.configuration.action_controller.asset_host  %>';
  Discourse.BaseUrl = '<%= RailsMultisite::ConnectionManagement.current_hostname  %>';
  Discourse.Environment = '<%= Rails.env %>';
  window.Discourse.Router.map(function() {
    return Discourse.routeBuilder.call(this);
  });
  Discourse.start()
  Discourse.initialize()
</script>