Change directory of vue multi-page entries

src/entries/_mount.ts

@@ -0,0 +1,10 @@
+import Vue, { VueConstructor } from 'vue'
+import '@/components/_globals'
+
+Vue.config.productionTip = false
+
+export default function(render: VueConstructor) {
+  new Vue({
+    render: h => h(render),
+  }).$mount('#app')
+}

src/entries/about.ts

@@ -0,0 +1,4 @@
+import vueMount from './_mount'
+import About from '@/views/About.vue'
+
+vueMount(About)

src/entries/main.ts

@@ -0,0 +1,4 @@
+import vueMount from './_mount'
+import App from '@/views/App.vue'
+
+vueMount(App)