update to webpack4 (#889)

build/webpack.base.conf.js

@@ -2,9 +2,10 @@
 const path = require('path')
 const utils = require('./utils')
 const config = require('../config')
+const { VueLoaderPlugin } = require('vue-loader')
 const vueLoaderConfig = require('./vue-loader.conf')
 
-function resolve (dir) {
+function resolve(dir) {
   return path.join(__dirname, '..', dir)
 }
 
@@ -27,14 +28,15 @@ module.exports = {
   output: {
     path: config.build.assetsRoot,
     filename: '[name].js',
-    publicPath: process.env.NODE_ENV === 'production'
-      ? config.build.assetsPublicPath
-      : config.dev.assetsPublicPath
+    publicPath:
+      process.env.NODE_ENV === 'production'
+        ? config.build.assetsPublicPath
+        : config.dev.assetsPublicPath
   },
   resolve: {
     extensions: ['.js', '.vue', '.json'],
     alias: {
-      '@': resolve('src'),
+      '@': resolve('src')
     }
   },
   module: {
@@ -48,7 +50,11 @@ module.exports = {
       {
         test: /\.js$/,
         loader: 'babel-loader?cacheDirectory',
-        include: [resolve('src'), resolve('test'), resolve('node_modules/webpack-dev-server/client')]
+        include: [
+          resolve('src'),
+          resolve('test'),
+          resolve('node_modules/webpack-dev-server/client')
+        ]
       },
       {
         test: /\.svg$/,
@@ -85,6 +91,7 @@ module.exports = {
       }
     ]
   },
+  plugins: [new VueLoaderPlugin()],
   node: {
     // prevent webpack from injecting useless setImmediate polyfill because Vue
     // source contains it (although only uses it if it's native).