fix(client): router in invalid state after 404 (#2972)

src/client/app/index.ts

@@ -121,9 +121,9 @@ function newRouter(): Router {
 
   return createRouter((path) => {
     let pageFilePath = pathToFile(path)
+    let pageModule = null
 
-    if (!pageFilePath) return null
-
+    if (pageFilePath) {
       if (isInitialPageLoad) {
         initialPath = pageFilePath
       }
@@ -135,11 +135,14 @@ function newRouter(): Router {
         pageFilePath = pageFilePath.replace(/\.js$/, '.lean.js')
       }
 
+      pageModule = import(/*@vite-ignore*/ pageFilePath)
+    }
+
     if (inBrowser) {
       isInitialPageLoad = false
     }
 
-    return import(/*@vite-ignore*/ pageFilePath)
+    return pageModule
   }, Theme.NotFound)
 }
 

src/client/theme-default/NotFound.vue

@@ -37,7 +37,6 @@ onMounted(() => {
         class="link"
         :href="withBase(root)"
         :aria-label="theme.notFound?.linkLabel ?? 'go to home'"
-        target="_self"
       >
         {{ theme.notFound?.linkText ?? 'Take me home' }}
       </a>