Merge branch 'dev' of github.com:vuejs/vue-cli into dev

packages/@vue/cli-service/lib/config/base.js

@@ -5,6 +5,7 @@ module.exports = (api, options) => {
     const inlineLimit = 10000
 
     webpackConfig
+      .mode('development')
       .context(api.service.context)
       .entry('app')
         .add('./src/main.js')

packages/@vue/cli-service/lib/config/dev.js

@@ -1,9 +1,6 @@
 module.exports = (api, options) => {
   api.chainWebpack(webpackConfig => {
     if (process.env.NODE_ENV === 'development') {
-      webpackConfig
-        .mode('development')
-
       webpackConfig
         .devtool('cheap-module-eval-source-map')
         .output
@@ -13,10 +10,6 @@ module.exports = (api, options) => {
         .plugin('hmr')
           .use(require('webpack/lib/HotModuleReplacementPlugin'))
 
-      webpackConfig
-        .plugin('named-modules')
-          .use(require('webpack/lib/NamedModulesPlugin'))
-
       webpackConfig
         .plugin('no-emit-on-errors')
           .use(require('webpack/lib/NoEmitOnErrorsPlugin'))

packages/@vue/cli-service/webpack.config.js

@@ -6,7 +6,7 @@ let service = process.VUE_CLI_SERVICE
 if (!service) {
   const Service = require('./lib/Service')
   service = new Service(process.env.VUE_CLI_CONTEXT || process.cwd())
-  service.init()
+  service.init(process.env.VUE_CLI_MODE || process.env.NODE_ENV)
 }
 
 module.exports = service.resolveWebpackConfig()