added post backend

src/routes.ts

@@ -1,9 +1,19 @@
 import Home from './routes/Home.svelte';
-import Post from './routes/Post.svelte';
+import Loading from './routes/Loading.svelte';
 import NotFound from './routes/NotFound.svelte';
+import wrap from 'svelte-spa-router/wrap'
 
 export default {
     '/': Home,
-    '/post/:year/:month/:day/:title': Post,
+    '/post/:year/:month/:day/:title': wrap({
+        // Note that this is a function that returns the import
+        asyncComponent: () => import('./routes/Post.svelte'),
+        // Show the loading component while the component is being downloaded
+        loadingComponent: Loading,
+        // Pass values for the `params` prop of the loading component
+        loadingParams: {
+            message: 'Loading the Name route…'
+        }
+    }),
     '*': NotFound
 };