fix(vue-loader): enable minimize for production builds

awaiting for vuejs/vue-loader#1208

lib/builder/webpack/base.mjs

@@ -117,7 +117,18 @@ export default class WebpackBaseConfig {
       {
         test: /\.vue$/,
         loader: 'vue-loader',
-        options: _.cloneDeep(this.options.build.vue)
+        options: Object.assign({
+          minimize: !this.options.dev,
+          template: {
+            doctype: 'html' // For pug, see https://github.com/vuejs/vue-loader/issues/55
+          },
+          transformAssetUrls: {
+            video: 'src',
+            source: 'src',
+            object: 'src',
+            embed: 'src'
+          }
+        }, this.options.build.vueLoader)
       },
       {
         test: /\.jsx?$/,

lib/common/nuxt.config.js

@@ -63,17 +63,7 @@ export default {
     babel: {
       babelrc: false
     },
-    vue: {
-      template: {
-        doctype: 'html' // For pug, see https://github.com/vuejs/vue-loader/issues/55
-      },
-      transformAssetUrls: {
-        video: 'src',
-        source: 'src',
-        object: 'src',
-        embed: 'src'
-      }
-    },
+    vueLoader: {},
     postcss: {},
     templates: [],
     watch: [],