github.com/titpetric/pendulum@v0.1.180207-1512.0.20180514135826-1f399445df57/front/src/build/dev-server.js (about)

     1  require('./check-versions')()
     2  
     3  var config = require('../config')
     4  if (!process.env.NODE_ENV) {
     5    process.env.NODE_ENV = JSON.parse(config.dev.env.NODE_ENV)
     6  }
     7  
     8  var opn = require('opn')
     9  var path = require('path')
    10  var express = require('express')
    11  var webpack = require('webpack')
    12  var proxyMiddleware = require('http-proxy-middleware')
    13  var webpackConfig = process.env.NODE_ENV === 'testing'
    14    ? require('./webpack.prod.conf')
    15    : require('./webpack.dev.conf')
    16  
    17  // default port where dev server listens for incoming traffic
    18  var port = process.env.PORT || config.dev.port
    19  // automatically open browser, if not set will be false
    20  var autoOpenBrowser = !!config.dev.autoOpenBrowser
    21  // Define HTTP proxies to your custom API backend
    22  // https://github.com/chimurai/http-proxy-middleware
    23  var proxyTable = config.dev.proxyTable
    24  
    25  var app = express()
    26  var compiler = webpack(webpackConfig)
    27  
    28  var devMiddleware = require('webpack-dev-middleware')(compiler, {
    29    publicPath: webpackConfig.output.publicPath,
    30    quiet: true
    31  })
    32  
    33  var hotMiddleware = require('webpack-hot-middleware')(compiler, {
    34    log: false,
    35    heartbeat: 2000
    36  })
    37  // force page reload when html-webpack-plugin template changes
    38  compiler.plugin('compilation', function (compilation) {
    39    compilation.plugin('html-webpack-plugin-after-emit', function (data, cb) {
    40      hotMiddleware.publish({ action: 'reload' })
    41      cb()
    42    })
    43  })
    44  
    45  // proxy api requests
    46  Object.keys(proxyTable).forEach(function (context) {
    47    var options = proxyTable[context]
    48    if (typeof options === 'string') {
    49      options = { target: options }
    50    }
    51    app.use(proxyMiddleware(options.filter || context, options))
    52  })
    53  
    54  // handle fallback for HTML5 history API
    55  app.use(require('connect-history-api-fallback')())
    56  
    57  // serve webpack bundle output
    58  app.use(devMiddleware)
    59  
    60  // enable hot-reload and state-preserving
    61  // compilation error display
    62  app.use(hotMiddleware)
    63  
    64  // serve pure static assets
    65  var staticPath = path.posix.join(config.dev.assetsPublicPath, config.dev.assetsSubDirectory)
    66  app.use(staticPath, express.static('./static'))
    67  
    68  var uri = 'http://localhost:' + port
    69  
    70  var _resolve
    71  var readyPromise = new Promise(resolve => {
    72    _resolve = resolve
    73  })
    74  
    75  console.log('> Starting dev server...')
    76  devMiddleware.waitUntilValid(() => {
    77    console.log('> Listening at ' + uri + '\n')
    78    // when env is testing, don't need open it
    79    if (autoOpenBrowser && process.env.NODE_ENV !== 'testing') {
    80      opn(uri)
    81    }
    82    _resolve()
    83  })
    84  
    85  var server = app.listen(port)
    86  
    87  module.exports = {
    88    ready: readyPromise,
    89    close: () => {
    90      server.close()
    91    }
    92  }