add ecs6 improviments

server.js

@@ -1,23 +1,25 @@
-var webpack = require('webpack')
-var webpackDevMiddleware = require('webpack-dev-middleware')
-var webpackHotMiddleware = require('webpack-hot-middleware')
-var config = require('./webpack.config')
+const webpack = require('webpack')
+const webpackDevMiddleware = require('webpack-dev-middleware')
+const webpackHotMiddleware = require('webpack-hot-middleware')
+const config = require('./webpack.config')
 
-var app = new (require('express'))()
-var port = 3000
+const app = new require('express')()
+const port = 3000
 
-var compiler = webpack(config)
-app.use(webpackDevMiddleware(compiler, { noInfo: true, publicPath: config.output.publicPath }))
+const compiler = webpack(config)
+app.use(webpackDevMiddleware(compiler, { 
+  noInfo: true, publicPath: config.output.publicPath 
+}))
 app.use(webpackHotMiddleware(compiler))
 
-app.get("/", function(req, res) {
-  res.sendFile(__dirname + '/index.html')
+app.get('/', function(req, res) {
+  res.sendFile(`${__dirname}/index.html`)
 })
 
 app.listen(port, function(error) {
   if (error) {
     console.error(error)
   } else {
-    console.info("==> 🌎  Listening on port %s. Open up http://localhost:%s/ in your browser.", port, port)
+    console.info(`==> 🌎  Listening on port ${port}. Open up http://localhost:${port}/ in your browser.`)
   }
 })

webpack.config.js

@@ -1,5 +1,5 @@
-var path = require('path')
-var webpack = require('webpack')
+const path = require('path')
+const webpack = require('webpack')
 
 module.exports = {
   devtool: 'cheap-module-eval-source-map',
@@ -34,9 +34,9 @@ module.exports = {
 
 // When inside Redux repo, prefer src to compiled version.
 // You can safely delete these lines in your project.
-var reduxSrc = path.join(__dirname, '..', '..', 'src')
-var reduxNodeModules = path.join(__dirname, '..', '..', 'node_modules')
-var fs = require('fs')
+const reduxSrc = path.join(__dirname, '..', '..', 'src')
+const reduxNodeModules = path.join(__dirname, '..', '..', 'node_modules')
+const fs = require('fs')
 if (fs.existsSync(reduxSrc) && fs.existsSync(reduxNodeModules)) {
   // Resolve Redux to source
   module.exports.resolve = { alias: { 'redux': reduxSrc } }