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

<script>
  window.assetPath = (function(){
    var map = <%= deferred_scripts %>;
    return function(asset) { return map[asset]; };
  })();
</script>

<script>
  Ember.RSVP.configure('onerror', function(e) {
    // Ignore TransitionAborted exceptions that bubble up
    if (e && e.message === "TransitionAborted") { return; }

    <% if Rails.env.development? %>
      if (e) {
        if (e.message || e.stack) {
          console.log(e.message);
          console.log(e.stack);
        } else {
          console.log("Uncaught promise: ", e);
        }
      } else {
        console.log("A promise failed but was not caught.");
      }
    <% end %>
    window.onerror(e && e.message, null,null,null,e);
  });
</script>

<script>
  Discourse.CDN = '<%= Rails.configuration.action_controller.asset_host %>';
  Discourse.BaseUrl = '<%= RailsMultisite::ConnectionManagement.current_hostname %>'.replace(/:[\d]*$/,"");
  Discourse.BaseUri = '<%= Discourse::base_uri "/" %>';
  Discourse.Environment = '<%= Rails.env %>';
  Discourse.SiteSettings = PreloadStore.get('siteSettings');
  Discourse.LetterAvatarVersion = '<%= LetterAvatar.version %>';
  PreloadStore.get("customEmoji").forEach(function(emoji) {
    Discourse.Dialect.registerEmoji(emoji.name, emoji.url);
  });
  Discourse.start();
  Discourse.set('assetVersion','<%= Discourse.assets_digest %>');
  Discourse.Session.currentProp("disableCustomCSS", <%= loading_admin? %>);
  Discourse.HighlightJSPath = <%= HighlightJs.path.inspect.html_safe %>;
  <%- if SiteSetting.enable_s3_uploads %>
    <%- if SiteSetting.s3_cdn_url.present? %>
      Discourse.S3CDN = '<%= SiteSetting.s3_cdn_url %>';
    <%- end %>
    Discourse.S3BaseUrl = '<%= Discourse.store.absolute_base_url %>';
  <%- end %>
</script>

<%= script 'browser-update' %>