ascript"); e.setAttribute(ss.endsWith(_MAIN_JS_FILE_ENDS_WITH) ? "defer" : "defer", "true");
                                document.body.appendChild(e);
                            } else if (ss.endsWith(".css")) {
                                var e = document.createElement("link"); e.setAttribute("href", ss); e.setAttribute("rel", "stylesheet");
                                document.body.appendChild(e);
                            }
                        }

                        return Promise.