code: function (requested) {
      // No postMessage? Don't render – the event-stream will handle it.
      if (!window.postMessage) { return; }
  
      // Inform other pages event streaming render to reload
      if (requested) {
        sendReload();
        jsbin.state.hasBody = false;
      }
      getPreparedCode().then(function (source) {
        var includeJsInRealtime = jsbin.settings.includejs;
  
        // Tell the iframe to reload
        var visiblePanels = jsbin.panels.getVisible();
        var outputPanelOpen = visiblePanels.indexOf(jsbin.panels.panels.live) > -1;
        var consolePanelOpen = visiblePanels.indexOf(jsbin.panels.panels.console) > -1;
        if (!outputPanelOpen && !consolePanelOpen) {
          return;
        }
        // this is a flag that helps detect crashed runners
        if (jsbin.settings.includejs) {
          store.sessionStorage.setItem('runnerPending', 1);
        }
  
        renderer.postMessage('render', {
          source: source,
          options: {
            injectCSS: jsbin.state.hasBody && jsbin.panels.focused.id === 'css',
            requested: requested,
            debug: jsbin.settings.debug,
            includeJsInRealtime: jsbin.settings.includejs,
          },
        });
  
        jsbin.state.hasBody = true;
  
      });
    }
docs: The big daddy that handles postmessaging the runner.