fix: build error

index.html

@@ -7,9 +7,8 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>后台管理系统</title>
     <script src="/sortable.min.js"></script>
-    <script type="module">
-      import process from "process";
-      window.process = process;
+    <script>
+      window.process = {};
     </script>
   </head>