diff --git a/javascript/extraNetworks.js b/javascript/extraNetworks.js
index 27a456e64..6f1b4034e 100644
--- a/javascript/extraNetworks.js
+++ b/javascript/extraNetworks.js
@@ -58,7 +58,7 @@ const isFunctionLogError = x => {
     }
     console.error("expected function type, got:", typeof x);
     return false;
-}
+};
 
 const getElementByIdLogError = selector => {
     let elem = gradioApp().getElementById(selector);
@@ -222,7 +222,7 @@ function extraNetworksRefreshTab(tabname_full) {
             for (const _tabname_full of Object.keys(clusterizers)) {
                 let selected = _tabname_full === tabname_full;
                 extraNetworkClusterizersLoadTab({
-                    tabname_full:_tabname_full,
+                    tabname_full: _tabname_full,
                     selected: selected,
                     fetch_data: true
                 });
@@ -407,9 +407,9 @@ function extraNetworkClusterizersLoadTab({
     tabname_full = "",
     selected = false,
     fetch_data = false,
-}={}) {
+} = {}) {
     /** Loads clusterize data for a tab.
-     * 
+     *
      *  Args:
      *      tabname_full [str]: The clusterize tab to load. Does not need to be the active
      *          tab however if it isn't the active tab then `selected` should be set to
@@ -482,14 +482,14 @@ function extraNetworksAutoSetTreeWidth(pane) {
 
 function extraNetworksSetupEventDelegators() {
     /** Sets up event delegators for all extraNetworks tabs.
-     * 
+     *
      *  These event handlers are not tied to any specific elements on the page.
      *  We do this because elements within each tab may be removed and replaced
      *  which would break references to elements in DOM and thus prevent any event
      *  listeners from firing.
      */
 
-     window.addEventListener("resizeHandleDblClick", event => {
+    window.addEventListener("resizeHandleDblClick", event => {
         // See resizeHandle.js::onDoubleClick() for event detail.
         event.stopPropagation();
         extraNetworksAutoSetTreeWidth(event.target.closest(".extra-network-pane"));
@@ -515,7 +515,6 @@ function extraNetworksSetupEventDelegators() {
                 search_input_debounce.call(target, tabname_full);
             }
         }
-        
     });
 }
 
@@ -578,7 +577,7 @@ function extraNetworksCardOnClick(event, tabname) {
     const elem = event.currentTarget;
     const prompt_elem = gradioApp().querySelector(`#${tabname}_prompt > label > textarea`);
     const neg_prompt_elem = gradioApp().querySelector(`#${tabname}_neg_prompt > label > textarea`);
-    if ("negPrompt" in elem.dataset){
+    if ("negPrompt" in elem.dataset) {
         updatePromptArea(elem.dataset.prompt, prompt_elem);
         updatePromptArea(elem.dataset.negPrompt, neg_prompt_elem);
     } else if ("allowNeg" in elem.dataset) {
diff --git a/javascript/extraNetworksClusterizeList.js b/javascript/extraNetworksClusterizeList.js
index 7ae3a2aaf..a1cd92f78 100644
--- a/javascript/extraNetworksClusterizeList.js
+++ b/javascript/extraNetworksClusterizeList.js
@@ -8,6 +8,8 @@
     isNullOrUndefinedLogError,
     isElement,
     isElementLogError,
+    isFunction,
+    isFunctionLogError,
     getElementByIdLogError,
     querySelectorLogError,
     waitForElement,
@@ -979,7 +981,7 @@ class ExtraNetworksClusterizeCardsList extends ExtraNetworksClusterize {
             this.data_obj[k].active = visible;
         }
 
-        super.applyFilter()
+        super.applyFilter();
     }
 
     getMaxRowWidth() {
diff --git a/modules/ui_extra_networks.py b/modules/ui_extra_networks.py
index f87e620fc..85b8ee12e 100644
--- a/modules/ui_extra_networks.py
+++ b/modules/ui_extra_networks.py
@@ -281,7 +281,7 @@ class ExtraNetworksPage:
         tabname: str,
         label: str,
         btn_type: str,
-        data_attributes: dict = {},
+        data_attributes: Optional[dict] = None,
         btn_title: Optional[str] = None,
         dir_is_empty: bool = False,
         item: Optional[dict] = None,
@@ -289,7 +289,10 @@ class ExtraNetworksPage:
     ) -> str:
         if btn_type not in ["file", "dir"]:
             raise ValueError("Invalid button type:", btn_type)
-        
+
+        if data_attributes is None:
+            data_attributes = {}
+
         label = label.strip()
         # If not specified, title will just reflect the label
         btn_title = btn_title.strip() if btn_title else label
@@ -697,8 +700,6 @@ class ExtraNetworksPage:
             "tree_view_style": f"flex-basis: {shared.opts.extra_networks_tree_view_default_width}px;",
             "cards_view_style": "flex-grow: 1;",
             "dirs_html": dirs_html,
-
-            
         })
 
     def create_item(self, name, index=None):