remove no longer needed config

Author: yyx990803

package.json

@@ -39,6 +39,7 @@
     "jest": "^22.0.4",
     "lerna": "^2.5.1",
     "lint-staged": "^6.0.0",
-    "memfs": "^2.6.0"
+    "memfs": "^2.6.0",
+    "yorkie": "^1.0.1"
   }
 }

packages/@vue/cli-service/lib/commands/serve.js

@@ -33,7 +33,6 @@ module.exports = (api, options) => {
     // are running it in a mode with a production env, e.g. in E2E tests.
     const isProduction = process.env.NODE_ENV === 'production'
 
-    const path = require('path')
     const chalk = require('chalk')
     const webpack = require('webpack')
     const WebpackDevServer = require('webpack-dev-server')
@@ -53,14 +52,6 @@ module.exports = (api, options) => {
         return error(err)
       }
 
-      // transpile webpack-dev-server client since it uses const/let
-      api.chainWebpack(webpackConfig => {
-        webpackConfig.module
-          .rule('js')
-            .include
-              .add(path.dirname(require.resolve('webpack-dev-server/client')))
-      })
-
       const webpackConfig = api.resolveWebpackConfig()
 
       const urls = prepareURLs(

packages/@vue/cli-service/package.json

@@ -60,7 +60,7 @@
     "webpack-chain": "^4.5.0",
     "webpack-dev-server": "^2.10.0",
     "webpack-merge": "^4.1.1",
-    "yorkie": "^1.0.0"
+    "yorkie": "^1.0.1"
   },
   "devDependencies": {
     "vue": "^2.5.13"