v12 (#5712)

Co-authored-by: MeiMei <30769358+mei23@users.noreply.github.com>
Co-authored-by: Satsuki Yanagi <17376330+u1-liquid@users.noreply.github.com>

src/client/pages/index.vue

@@ -0,0 +1,15 @@
+<template>
+<component :is="$store.getters.isSignedIn ? 'home' : 'welcome'"></component>
+</template>
+
+<script lang="ts">
+import Vue from 'vue';
+import Home from './index.home.vue';
+
+export default Vue.extend({
+	components: {
+		Home,
+		Welcome: () => import('./index.welcome.vue').then(m => m.default),
+	}
+});
+</script>