Check for DOM in CSSPluginBase.prototype.instantiate()

css-plugin-base.js

@@ -58,8 +58,8 @@ CSSPluginBase.prototype.listAssets = function(loads, opts) {
  */
 // NB hot reloading support here
 CSSPluginBase.prototype.instantiate = function(load) {
-  if (this.builder)
-    return;
+  if (this.builder || typeof document === 'undefined')
+      return;
 
   var style = document.createElement('style');
   style.type = 'text/css';

test/bundle.js

@@ -4,6 +4,4 @@ System.registerDynamic("test/data/test.css!css.js", [], false, function ($__requ
   (function ($__global) {})(this);
 
   return _retrieveGlobal();
-});
-(function(c){if (typeof document == 'undefined') return; var d=document,a='appendChild',i='styleSheet',s=d.createElement('style');s.type='text/css';d.getElementsByTagName('head')[0][a](s);s[a](d.createTextNode(c));})
-("@import \"./dep.css\";body{background-color:red;background-image:url(test/data/x.png)}\n/*# sourceMappingURL=__.css.map */");
+});