diff --git a/web_src/js/features/copycontent.ts b/web_src/js/features/copycontent.ts
index 3961a8d7ac..d58f6c8246 100644
--- a/web_src/js/features/copycontent.ts
+++ b/web_src/js/features/copycontent.ts
@@ -7,7 +7,7 @@ import {registerGlobalEventFunc} from '../modules/observer.ts';
 const {i18n} = window.config;
 
 export function initCopyContent() {
-  registerGlobalEventFunc('click', 'onCopyContentButtonClick', async (btn: HTMLInputElement) => {
+  registerGlobalEventFunc('click', 'onCopyContentButtonClick', async (btn: HTMLElement) => {
     if (btn.classList.contains('disabled') || btn.classList.contains('is-loading')) return;
     let content;
     let isRasterImage = false;
diff --git a/web_src/js/globals.d.ts b/web_src/js/globals.d.ts
index 0c540ac296..2f8cd98878 100644
--- a/web_src/js/globals.d.ts
+++ b/web_src/js/globals.d.ts
@@ -58,21 +58,23 @@ interface Element {
 type Writable<T> = { -readonly [K in keyof T]: T[K] };
 
 interface Window {
+  __webpack_public_path__: string;
   config: import('./web_src/js/types.ts').Config;
   $: typeof import('@types/jquery'),
   jQuery: typeof import('@types/jquery'),
   htmx: Omit<typeof import('htmx.org/dist/htmx.esm.js').default, 'config'> & {
     config?: Writable<typeof import('htmx.org').default.config>,
   },
-  ui?: any,
   _globalHandlerErrors: Array<ErrorEvent & PromiseRejectionEvent> & {
     _inited: boolean,
     push: (e: ErrorEvent & PromiseRejectionEvent) => void | number,
   },
-  __webpack_public_path__: string;
+  codeEditors: any[], // export editor for customization
+
+  // various captcha plugins
   grecaptcha: any,
   turnstile: any,
   hcaptcha: any,
-  codeEditors: any[],
-  updateCloneStates: () => void,
+
+  // do not add more properties here unless it is a must
 }
diff --git a/web_src/js/standalone/swagger.ts b/web_src/js/standalone/swagger.ts
index 63b676b2ea..4b17ba21a8 100644
--- a/web_src/js/standalone/swagger.ts
+++ b/web_src/js/standalone/swagger.ts
@@ -14,7 +14,7 @@ window.addEventListener('load', async () => {
     return 0;
   });
 
-  const ui = SwaggerUI({
+  SwaggerUI({
     spec,
     dom_id: '#swagger-ui',
     deepLinking: true,
@@ -27,6 +27,4 @@ window.addEventListener('load', async () => {
       SwaggerUI.plugins.DownloadUrl,
     ],
   });
-
-  window.ui = ui;
 });