use babel

.babelrc

+{
+  "presets": [
+    ["env", { "modules": false }]
+  ]
+}

README.md

@@ -30,7 +30,7 @@ HackerNews clone built with Vue 2.0 + vue-router + vuex, with server-side render
 
 ## Build Setup
 
-**Requires Node.js 6+**
+**Requires Node.js 7+**
 
 ``` bash
 # install dependencies

build/webpack.base.config.js

@@ -30,11 +30,8 @@ module.exports = {
       },
       {
         test: /\.js$/,
-        loader: 'buble-loader',
-        exclude: /node_modules/,
-        options: {
-          objectAssign: 'Object.assign'
-        }
+        loader: 'babel-loader',
+        exclude: /node_modules/
       },
       {
         test: /\.(png|jpg|gif|svg)$/,

package.json

@@ -31,23 +31,24 @@
   },
   "devDependencies": {
     "autoprefixer": "^6.7.7",
-    "buble": "^0.15.2",
-    "buble-loader": "^0.4.1",
+    "babel-core": "^6.24.1",
+    "babel-loader": "^6.4.1",
+    "babel-preset-env": "^1.4.0",
     "css-loader": "^0.28.0",
     "file-loader": "^0.11.1",
     "friendly-errors-webpack-plugin": "^1.6.1",
     "rimraf": "^2.6.1",
     "stylus": "^0.54.5",
     "stylus-loader": "^3.0.1",
-    "sw-precache-webpack-plugin": "^0.9.1",
+    "sw-precache-webpack-plugin": "^0.10.1",
     "url-loader": "^0.5.8",
     "vue-loader": "^12.0.2",
     "vue-style-loader": "^3.0.0",
     "vue-template-compiler": "^2.3.0",
-    "webpack": "^2.2.1",
-    "webpack-merge": "^4.0.0",
+    "webpack": "^2.4.1",
     "webpack-dev-middleware": "^1.10.1",
     "webpack-hot-middleware": "^2.17.1",
+    "webpack-merge": "^4.0.0",
     "webpack-node-externals": "^1.5.4"
   }
 }