update webpack to version 3

build/dev-server.js

@@ -1,45 +1,61 @@
-var path = require('path')
-var express = require('express')
-var webpack = require('webpack')
-var config = require('../config')
-var proxyMiddleware = require('http-proxy-middleware')
-var webpackConfig = process.env.NODE_ENV === 'testing'
+'use strict'
+require('./check-versions')()
+
+const config = require('../config')
+if (!process.env.NODE_ENV) {
+  process.env.NODE_ENV = JSON.parse(config.dev.env.NODE_ENV)
+}
+
+const opn = require('opn')
+const path = require('path')
+const express = require('express')
+const webpack = require('webpack')
+const proxyMiddleware = require('http-proxy-middleware')
+const webpackConfig = (process.env.NODE_ENV === 'testing' || process.env.NODE_ENV === 'production')
   ? require('./webpack.prod.conf')
   : require('./webpack.dev.conf')
 
 // default port where dev server listens for incoming traffic
-var port = process.env.PORT || config.dev.port
+const port = process.env.PORT || config.dev.port
+// automatically open browser, if not set will be false
+const autoOpenBrowser = !!config.dev.autoOpenBrowser
 // Define HTTP proxies to your custom API backend
 // https://github.com/chimurai/http-proxy-middleware
-var proxyTable = config.dev.proxyTable
+const proxyTable = config.dev.proxyTable
 
-var app = express()
-var compiler = webpack(webpackConfig)
+const app = express()
+const compiler = webpack(webpackConfig)
 
-var devMiddleware = require('webpack-dev-middleware')(compiler, {
+const devMiddleware = require('webpack-dev-middleware')(compiler, {
   publicPath: webpackConfig.output.publicPath,
-  stats: {
-    colors: true,
-    chunks: false
-  }
+  quiet: true
 })
 
-var hotMiddleware = require('webpack-hot-middleware')(compiler)
-// force page reload when html-webpack-plugin template changes
-compiler.plugin('compilation', function (compilation) {
-  compilation.plugin('html-webpack-plugin-after-emit', function (data, cb) {
-    hotMiddleware.publish({ action: 'reload' })
-    cb()
-  })
+const hotMiddleware = require('webpack-hot-middleware')(compiler, {
+  log: false,
+  heartbeat: 2000
 })
+// force page reload when html-webpack-plugin template changes
+// currently disabled until this is resolved:
+// https://github.com/jantimon/html-webpack-plugin/issues/680
+// compiler.plugin('compilation', function (compilation) {
+//   compilation.plugin('html-webpack-plugin-after-emit', function (data, cb) {
+//     hotMiddleware.publish({ action: 'reload' })
+//     cb()
+//   })
+// })
+
+// enable hot-reload and state-preserving
+// compilation error display
+app.use(hotMiddleware)
 
 // proxy api requests
 Object.keys(proxyTable).forEach(function (context) {
-  var options = proxyTable[context]
+  const options = proxyTable[context]
   if (typeof options === 'string') {
     options = { target: options }
   }
-  app.use(proxyMiddleware(context, options))
+  app.use(proxyMiddleware(options.filter || context, options))
 })
 
 // handle fallback for HTML5 history API
@@ -48,18 +64,44 @@ app.use(require('connect-history-api-fallback')())
 // serve webpack bundle output
 app.use(devMiddleware)
 
-// enable hot-reload and state-preserving
-// compilation error display
-app.use(hotMiddleware)
-
 // serve pure static assets
-var staticPath = path.posix.join(config.build.assetsPublicPath, config.build.assetsSubDirectory)
+const staticPath = path.posix.join(config.dev.assetsPublicPath, config.dev.assetsSubDirectory)
 app.use(staticPath, express.static('./static'))
 
-module.exports = app.listen(port, function (err) {
-  if (err) {
-    console.log(err)
-    return
-  }
-  console.log('Listening at http://localhost:' + port + '\n')
+const uri = 'http://localhost:' + port
+
+var _resolve
+var _reject
+var readyPromise = new Promise((resolve, reject) => {
+  _resolve = resolve
+  _reject = reject
 })
+
+var server
+var portfinder = require('portfinder')
+portfinder.basePort = port
+
+console.log('> Starting dev server...')
+devMiddleware.waitUntilValid(() => {
+  portfinder.getPort((err, port) => {
+    if (err) {
+      _reject(err)
+    }
+    process.env.PORT = port
+    var uri = 'http://localhost:' + port
+    console.log('> Listening at ' + uri + '\n')
+    // when env is testing, don't need open it
+    if (autoOpenBrowser && process.env.NODE_ENV !== 'testing') {
+      opn(uri)
+    }
+    server = app.listen(port)
+    _resolve()
+  })
+})
+
+module.exports = {
+  ready: readyPromise,
+  close: () => {
+    server.close()
+  }
+}