Make sure lastAppProps always have some value.

Author: arunoda

client/index.js

@@ -20,7 +20,7 @@ const {
 
 const Component = evalScript(component).default
 const ErrorComponent = evalScript(errorComponent).default
-let lastAppProps
+let lastAppProps = {}
 
 export const router = createRouter(pathname, query, {
   Component,