TypeError: this.cliEngineCtor is not a constructor，webstorm和eslint的版本纠结
webStorm 2020.3
npm install eslint@7.0.0 --save-exact
https://www.cnblogs.com/Neeo/articles/16945575.html
https://blog.csdn.net/liming1016/article/details/124544409
Environment key "es2021" is unknown
原因：版本过低，es2021在eslint v7.8.0才被添加
https://github.com/eslint/eslint/releases/tag/v7.8.0