serve css from custom_nodes styles directories

server.py

@@ -130,6 +130,16 @@ class PromptServer():
             embeddings = folder_paths.get_filename_list("embeddings")
             return web.json_response(list(map(lambda a: os.path.splitext(a)[0], embeddings)))
 
+        @routes.get("/styles")
+        async def get_styles(request):
+            styles = list()
+            for name, dir in nodes.EXTENSION_STYLE_DIRS.items():
+                files = glob.glob(os.path.join(glob.escape(dir), '**/*.css'), recursive=True)
+                styles.extend(list(map(lambda f: "/styles/" + urllib.parse.quote(
+                    name) + "/" + os.path.relpath(f, dir).replace("\\", "/"), files)))
+
+            return web.json_response(styles)
+
         @routes.get("/extensions")
         async def get_extensions(request):
             files = glob.glob(os.path.join(
@@ -523,6 +533,11 @@ class PromptServer():
     def add_routes(self):
         self.app.add_routes(self.routes)
 
+        for name, dir in nodes.EXTENSION_STYLE_DIRS.items():
+            self.app.add_routes([
+                web.static('/styles/' + urllib.parse.quote(name), dir, follow_symlinks=True),
+            ])
+
         for name, dir in nodes.EXTENSION_WEB_DIRS.items():
             self.app.add_routes([
                 web.static('/extensions/' + urllib.parse.quote(name), dir, follow_symlinks=True),