webpack-dev-server/client/clients/BaseClient.js 報錯

拿到別人的一個項目，啓動報下面的錯

  Cannot assign to read only property 'exports' of object '#<Object>' 
  webpack-dev-server/client/clients/BaseClient.js 

第一行報錯是不能混用import 以及module.exports 導致的

第二行是報錯位置，來自 webpack-dev-server這是底層代碼報錯，也不能改呀

查看package.json

   "webpack": "4.16.5",
    "webpack-bundle-analyzer": "2.13.1",
    "webpack-cli": "3.1.0",
    "webpack-dev-server": "^3.2.1",
    "webpack-merge": "4.1.4"

發現 webpack-dev-serve和 webpack主版本差異較大
升級 webpack-dev-server 到3.4.1
問題解決。