refactor: more TS code

src/routes/setting/APIConfig.tsx

@@ -20,7 +20,6 @@ const StyledConfirm = styled.div`
   gap: 10px;
   width: 250px;
   .tip {
-    /* word-break: break-all; */
     color: orange;
     font-size: 12px;
     line-height: 1.5;
@@ -100,7 +99,7 @@ export default function APIConfig() {
       </Tippy>
       <div className="tip">
         Tip: The security key agreed between the server and the third-party app is used to encrypt
-        the communication data.{" "}
+        the communication data.
       </div>
     </Styled>
   );

src/routes/setting/index.tsx

@@ -4,7 +4,7 @@ import StyledSettingContainer from "../../common/component/StyledSettingContaine
 import useNavs from "./navs";
 import LogoutConfirmModal from "./LogoutConfirmModal";
 
-let from: string | null = null;
+let from: string = "";
 
 export default function Setting() {
   const [searchParams] = useSearchParams();
@@ -15,10 +15,9 @@ export default function Setting() {
   const [logoutConfirm, setLogoutConfirm] = useState(false);
   const navigateTo = useNavigate();
   const close = () => {
-    // dispatch(toggleSetting());
     // todo: check usage
     navigateTo(from!);
-    from = null;
+    from = "";
   };
 
   const toggleLogoutConfirm = () => {