require('./check-versions')() var config = require('../config') if (!process.env.NODE_ENV) { process.env.NODE_ENV = JSON.parse(config.dev.env.NODE_ENV) } var opn = require('opn') var path = require('path') var express = require('express') var webpack = require('webpack') 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 // automatically open browser, if not set will be false var autoOpenBrowser = !!config.dev.autoOpenBrowser // 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, quiet: true }) var hotMiddleware = require('webpack-hot-middleware')(compiler, { log: () => {}, heartbeat: 2000 }) // 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(options.filter || 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')) var uri = 'http://localhost:' + port var _resolve var readyPromise = new Promise(resolve => { _resolve = resolve }) console.log('> Starting dev server...') devMiddleware.waitUntilValid(() => { console.log('> Listening at ' + uri + '\n') // when env is testing, don't need open it if (autoOpenBrowser && process.env.NODE_ENV !== 'testing') { opn(uri) } _resolve() }) var server = app.listen(port) module.exports = { ready: readyPromise, close: () => { server.close() } }