text: 'use strict'
  const utils = require('./utils')
  const webpack = require('webpack')
  const config = require('../config')
  const merge = require('webpack-merge')
  const baseWebpackConfig = require('./webpack.base.conf')
  const HtmlWebpackPlugin = require('html-webpack-plugin')
  const FriendlyErrorsPlugin = require('friendly-errors-webpack-plugin')
  const portfinder = require('portfinder')
  const express = require('express')
  const app = express()
  var appData = require('../data.json')//加载本地数据文件
  var seller = appData.seller//获取对应的本地数据
  var goods = appData.goods
  var ratings = appData.ratings
  var apiRoutes = express.Router()
  app.use('/api', apiRoutes)
  
  const HOST = process.env.HOST
  const PORT = process.env.PORT && Number(process.env.PORT)
  
  const devWebpackConfig = merge(baseWebpackConfig, {
    module: {
      rules: utils.styleLoaders({ sourceMap: config.dev.cssSourceMap, usePostCSS: true })
    },
    // cheap-module-eval-source-map is faster for development
    devtool: config.dev.devtool,
  
    // these devServer options should be customized in /config/index.js
    devServer: {
      clientLogLevel: 'warning',
      historyApiFallback: true,
      hot: true,
      compress: true,
      host: HOST || config.dev.host,
      port: PORT || config.dev.port,
      open: config.dev.autoOpenBrowser,
      overlay: config.dev.errorOverlay
        ? { warnings: false, errors: true }
        : false,
      publicPath: config.dev.assetsPublicPath,
      proxy: config.dev.proxyTable,
      quiet: true, // necessary for FriendlyErrorsPlugin
      watchOptions: {
        poll: config.dev.poll,
      },
      before(app) {
        app.get('/api/seller', (req, res) => {
          res.json({
            // 这里是你的json内容
            errno: 0,
            data: seller
          })
        }),
        app.get('/api/goods', (req, res) => {
          res.json({
            // 这里是你的json内容
            errno: 0,
            data: goods
          })
        }),
        app.get('/api/ratings', (req, res) => {
          res.json({
            // 这里是你的json内容
            errno: 0,
            data: ratings
          })
        })
      }
    },
    plugins: [
      new webpack.DefinePlugin({
        'process.env': require('../config/dev.env')
      }),
      new webpack.HotModuleReplacementPlugin(),
      new webpack.NamedModulesPlugin(), // HMR shows correct file names in console on update.
      new webpack.NoEmitOnErrorsPlugin(),
      // https://github.com/ampedandwired/html-webpack-plugin
      new HtmlWebpackPlugin({
        filename: 'index.html',
        template: 'index.html',
        inject: true
      }),
    ]
  })
  
  module.exports = new Promise((resolve, reject) => {
    portfinder.basePort = process.env.PORT || config.dev.port
    portfinder.getPort((err, port) => {
      if (err) {
        reject(err)
      } else {
        // publish the new Port, necessary for e2e tests
        process.env.PORT = port
        // add port to devServer config
        devWebpackConfig.devServer.port = port
  
        // Add FriendlyErrorsPlugin
        devWebpackConfig.plugins.push(new FriendlyErrorsPlugin({
          compilationSuccessInfo: {
            messages: [`Your application is running here: http://${devWebpackConfig.devServer.host}:${port}`],
          },
          onErrors: config.dev.notifyOnErrors
          ? utils.createNotifierCallback()
          : undefined
        }))
  
        resolve(devWebpackConfig)
      }
    })
  })
  