Basic skeleton

build/dev-server.js

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+require('./check-versions')()
+var config = require('../config')
+if (!process.env.NODE_ENV) process.env.NODE_ENV = config.dev.env
+var path = require('path')
+var express = require('express')
+var webpack = require('webpack')
+var opn = require('opn')
+var proxyMiddleware = require('http-proxy-middleware')
+var webpackConfig = process.env.NODE_ENV === 'testing'
+  ? 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
+// Define HTTP proxies to your custom API backend
+// https://github.com/chimurai/http-proxy-middleware
+var proxyTable = config.dev.proxyTable
+
+var app = express()
+var compiler = webpack(webpackConfig)
+
+var devMiddleware = require('webpack-dev-middleware')(compiler, {
+  publicPath: webpackConfig.output.publicPath,
+  stats: {
+    colors: true,
+    chunks: false
+  }
+})
+
+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()
+  })
+})
+
+// proxy api requests
+Object.keys(proxyTable).forEach(function (context) {
+  var options = proxyTable[context]
+  if (typeof options === 'string') {
+    options = { target: options }
+  }
+  app.use(proxyMiddleware(context, options))
+})
+
+// handle fallback for HTML5 history API
+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.dev.assetsPublicPath, config.dev.assetsSubDirectory)
+app.use(staticPath, express.static('./static'))
+
+module.exports = app.listen(port, function (err) {
+  if (err) {
+    console.log(err)
+    return
+  }
+  var uri = 'http://localhost:' + port
+  console.log('Listening at ' + uri + '\n')
+  opn(uri)
+})