text: // const chokidar = require('chokidar')
  // const bodyParser = require('body-parser')
  // const chalk = require('chalk')
  // const path = require('path')
  // const Mock = require('mockjs')
  
  // const mockDir = path.join(process.cwd(), 'mock')
  
  // function registerRoutes(app) {
  //   let mockLastIndex
  //   const { mocks } = require('./index.js')
  //   const mocksForServer = mocks.map(route => {
  //     return responseFake(route.url, route.type, route.response)
  //   })
  //   for (const mock of mocksForServer) {
  //     app[mock.type](mock.url, mock.response)
  //     mockLastIndex = app._router.stack.length
  //   }
  //   const mockRoutesLength = Object.keys(mocksForServer).length
  //   return {
  //     mockRoutesLength: mockRoutesLength,
  //     mockStartIndex: mockLastIndex - mockRoutesLength
  //   }
  // }
  
  // function unregisterRoutes() {
  //   Object.keys(require.cache).forEach(i => {
  //     if (i.includes(mockDir)) {
  //       delete require.cache[require.resolve(i)]
  //     }
  //   })
  // }
  
  // // for mock server
  // const responseFake = (url, type, respond) => {
  //   return {
  //     url: new RegExp(`${process.env.VUE_APP_BASE_API}${url}`),
  //     type: type || 'get',
  //     response(req, res) {
  //       console.log('request invoke:' + req.path)
  //       res.json(Mock.mock(respond instanceof Function ? respond(req, res) : respond))
  //     }
  //   }
  // }
  
  // module.exports = app => {
  //   // parse app.body
  //   // https://expressjs.com/en/4x/api.html#req.body
  //   app.use(bodyParser.json())
  //   app.use(bodyParser.urlencoded({
  //     extended: true
  //   }))
  
  //   const mockRoutes = registerRoutes(app)
  //   var mockRoutesLength = mockRoutes.mockRoutesLength
  //   var mockStartIndex = mockRoutes.mockStartIndex
  
  //   // watch files, hot reload mock server
  //   chokidar.watch(mockDir, {
  //     ignored: /mock-server/,
  //     ignoreInitial: true
  //   }).on('all', (event, path) => {
  //     if (event === 'change' || event === 'add') {
  //       try {
  //         // remove mock routes stack
  //         app._router.stack.splice(mockStartIndex, mockRoutesLength)
  
  //         // clear routes cache
  //         unregisterRoutes()
  
  //         const mockRoutes = registerRoutes(app)
  //         mockRoutesLength = mockRoutes.mockRoutesLength
  //         mockStartIndex = mockRoutes.mockStartIndex
  
  //         console.log(chalk.magentaBright(`\n > Mock Server hot reload success! changed  ${path}`))
  //       } catch (error) {
  //         console.log(chalk.redBright(error))
  //       }
  //     }
  //   })
  // }
  