add LazyLoad component

src/ui/LazyLoad.tsx

+import React, { Suspense } from "react";
+
+const LazyLoad = (props: { lazy: React.ReactNode }) => {
+  return <Suspense fallback={<div>Loading...</div>}>{props.lazy}</Suspense>;
+};
+
+export const lazyImport = (module: string) => React.lazy(() => import(module));
+export default LazyLoad;

src/ui/Neos.tsx

-import React, { Suspense } from "react";
+import React from "react";
 import { Routes, Route } from "react-router-dom";
+import LazyLoad, { lazyImport } from "./LazyLoad";
 
-const Login = React.lazy(() => import("./Login"));
-const WaitRoom = React.lazy(() => import("./WaitRoom"));
-const Mora = React.lazy(() => import("./Mora"));
-const NeosDuel = React.lazy(() => import("./Duel/main"));
+const Login = lazyImport("./Login");
+const WaitRoom = lazyImport("./WaitRoom");
+const Mora = lazyImport("./Mora");
+const NeosDuel = lazyImport("./Duel/main");
 
 export default function () {
   // FIXME: 这里Mora/Duel路由应该由每个房间指定一个路径
   return (
     <Routes>
-      <Route
-        path="/"
-        element={
-          <Suspense fallback={<div>Loading...</div>}>
-            <Login />
-          </Suspense>
-        }
-      />
+      <Route path="/" element={<LazyLoad lazy={<Login />} />} />
       <Route
         path="/room/:player/:passWd/:ip"
-        element={
-          <Suspense fallback={<div>Loading...</div>}>
-            <WaitRoom />
-          </Suspense>
-        }
+        element={<LazyLoad lazy={<WaitRoom />} />}
       />
       <Route
-        path="/room/:player/:passWd/:ip"
-        element={
-          <Suspense fallback={<div>Loading...</div>}>
-            <Mora />
-          </Suspense>
-        }
+        path="/mora/:player/:passWd/:ip"
+        element={<LazyLoad lazy={<Mora />} />}
       />
       <Route
-        path="/room/:player/:passWd/:ip"
-        element={
-          <Suspense fallback={<div>Loading...</div>}>
-            <NeosDuel />
-          </Suspense>
-        }
+        path="/duel/:player/:passWd/:ip"
+        element={<LazyLoad lazy={<NeosDuel />} />}
       />
     </Routes>
   );