Install vue and babel dependency

.babelrc

@@ -0,0 +1,8 @@
+{
+  "presets": [
+    "es2015"
+  ],
+  "plugins": [
+    "transform-runtime"
+  ]
+}

package.json

@@ -115,6 +115,7 @@
     "velocity-animate": "^1.4.0",
     "visibilityjs": "^1.2.4",
     "viz.js": "^1.4.1",
+    "vue": "^2.1.6",
     "winston": "^2.3.0",
     "xss": "^0.3.2"
   },
@@ -139,6 +140,12 @@
     "url": "https://github.com/hackmdio/hackmd.git"
   },
   "devDependencies": {
+    "babel-cli": "^6.18.0",
+    "babel-core": "^6.21.0",
+    "babel-loader": "^6.2.10",
+    "babel-plugin-transform-runtime": "^6.15.0",
+    "babel-preset-es2015": "^6.18.0",
+    "babel-runtime": "^6.20.0",
     "copy-webpack-plugin": "^4.0.1",
     "css-loader": "^0.26.1",
     "ejs-loader": "^0.3.0",

public/js/cover.js

@@ -28,6 +28,8 @@ var saveAs = require('file-saver').saveAs;
 var List = require('list.js');
 var S = require('string');
 
+import Vue from 'vue';
+
 var options = {
     valueNames: ['id', 'text', 'timestamp', 'fromNow', 'time', 'tags', 'pinned'],
     item: '<li class="col-xs-12 col-sm-6 col-md-6 col-lg-4">\

webpackBaseConfig.js

@@ -372,6 +372,10 @@ module.exports = {
         loaders: [{
             test: /\.json$/,
             loader: 'json-loader'
+        }, {
+            test: /\.js$/,
+            loader: 'babel',
+            exclude: [/node_modules/, /public\/vendor/]
         }, {
             test: /\.css$/,
             loader: ExtractTextPlugin.extract('style-loader', 'css-loader')