use alpha 3 + add validate method to page

package.json

@@ -29,7 +29,7 @@
     "@nuxtjs/meta": "latest",
     "@nuxtjs/workbox": "latest",
     "firebase": "^4.1.1",
-    "nuxt": "^1.0.0-alpha.3",
+    "nuxt": "1.0.0-alpha.3",
     "stylus": "^0.54.5",
     "stylus-loader": "^3.0.1"
   }

pages/_type/_page.vue

@@ -19,17 +19,19 @@
 </template>
 
 <script>
-  import {watchList} from '../../api'
+  import { watchList } from '../../api'
   import Item from '../../components/Item.vue'
 
   const camelize = str => str.charAt(0).toUpperCase() + str.slice(1)
 
   export default {
     name: 'item-list',
-
     components: {
       Item
     },
+    validate({ params }) {
+      return ['top', 'new', 'show', 'ask', 'job'].includes(params.type)
+    },
     data() {
       return {
         transition: 'slide-right',
@@ -41,9 +43,6 @@
     fetch({store, params}) {
       return store.dispatch('FETCH_LIST_DATA', {type: params.type})
     },
-    meta: {
-
-    },
     computed: {
       page() {
         return Number(this.$route.params.page) || 1