[Fess Site Search](https://github.com/codelibs/fess-site-search) provides [scripts](https://fss-generator.codelibs.org/docs/manual) (see below) to help you migrate from GSS/CSE.
Using the, you can replace existing GSS/CSE JavaScript codes with:

```
<script>
  (function() {
    var fess = document.createElement('script');
    fess.type = 'text/javascript';
    fess.async = true;
    fess.src = '//<Fess Server Name>/js/ss/fess-ss.min.js';

=== 'HTML' || getOffsetParent(element.firstElementChild) === element\n  );\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n  if (node.parentNode !== null) {\n    return getRoot(node.parentNode);\n  }\n\n  return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport...

    String CRAWLER_IGNORE_CONTENT_EXCEPTION = "crawler.ignore.content.exception";

    /** The key of the configuration. e.g. 404 */
    String CRAWLER_FAILURE_URL_STATUS_CODES = "crawler.failure.url.status.codes";

    /** The key of the configuration. e.g. 60 */
    String CRAWLER_SYSTEM_MONITOR_INTERVAL = "crawler.system.monitor.interval";

    /** The key of the configuration. e.g. true */

ss","../../node_modules/bootstrap/scss/mixins/_nav-divider.scss","../../node_modules/bootstrap/scss/_button-group.scss","../../node_modules/bootstrap/scss/_input-group.scss","../../node_modules/bootstrap/scss/_custom-forms.scss","../../node_modules/bootstrap/scss/_nav.scss","../../node_modules/bootstrap/scss/_navbar.scss","../../node_modules/bootstrap/scss/_card.scss","../../node_modules/bootstrap/scss/_breadcrumb.scss","../../node_modules/bootstrap/scss/_pagination.scss","../../node_modules/boo...

Node","noCloneChecked","option","wrapMap","thead","col","tr","td","_default","getAll","setGlobalEval","refElements","tbody","tfoot","colgroup","caption","th","optgroup","buildFragment","scripts","selection","ignored","wrap","attached","fragment","nodes","htmlPrefilter","createTextNode","rtypenamespace","returnTrue","returnFalse","expectSync","err","safeActiveElement","on","types","one","origFn","event","off","leverageNative","notAsync","saved","isTrigger","delegateType","stopPropagation","stopIm...

        int[] codes = (int[]) propMap.get(CRAWLER_FAILURE_URL_STATUS_CODES);
        if (codes == null) {
            codes = split(getCrawlerFailureUrlStatusCodes(), ",")
                    .get(stream -> stream.filter(StringUtil::isNotBlank).mapToInt(Integer::parseInt).toArray());
            propMap.put(CRAWLER_FAILURE_URL_STATUS_CODES, codes);
        }
        for (final int v : codes) {

		<property name="settings">
			{"http.cors.enabled":"true",
			 "http.cors.allow-origin":"*",
			 "discovery.type":"single-node",
			 <!--
			 "node.name":"search_engine",
			 "discovery.seed_hosts":"search_engine",
			 "cluster.initial_cluster_manager_nodes":"search_engine",
			 "node.roles":"cluster_manager,data,ingest,ml",
			 -->
			 "indices.breaker.total.limit":"100%",
			 "action.auto_create_index":"-*"}
		</property>

    private static final String STATUS = "status";
    private static final String TIMED_OUT = "timed_out";
    private static final String NUMBER_OF_NODES = "number_of_nodes";
    private static final String NUMBER_OF_DATA_NODES = "number_of_data_nodes";
    private static final String NUMBER_OF_PENDING_TASKS = "number_of_pending_tasks";
    private static final String NUMBER_OF_IN_FLIGHT_FETCH = "number_of_in_flight_fetch";

crawler.file.protocols=file,smb,smb1,ftp,storage
crawler.data.env.param.key.pattern=^FESS_ENV_.*
crawler.ignore.robots.txt=false
crawler.ignore.robots.tags=false
crawler.ignore.content.exception=true
crawler.failure.url.status.codes=404
crawler.system.monitor.interval=60
crawler.hotthread.ignore_idle_threads=true
crawler.hotthread.interval=500ms
crawler.hotthread.snapshots=10
crawler.hotthread.threads=3
crawler.hotthread.timeout=30s

Node","noCloneChecked","option","wrapMap","thead","col","tr","td","_default","getAll","setGlobalEval","refElements","tbody","tfoot","colgroup","caption","th","optgroup","buildFragment","scripts","selection","ignored","wrap","attached","fragment","nodes","htmlPrefilter","createTextNode","rtypenamespace","returnTrue","returnFalse","expectSync","err","safeActiveElement","on","types","one","origFn","event","off","leverageNative","notAsync","saved","isTrigger","delegateType","stopPropagation","stopIm...