| babel-core | ES6代码转换器 |
| babel-preset-env | 会加载从es2015开始的所有preset 相当于 es2015 ，es2016 ，es2017 及最新版本。 https://segmentfault.com/a/1190000016311818 |
| babel-preset-stage-0 | preset-stage-1 preset-stage-2 preset-stage-3 https://github.com/babel/babel/blob/master/packages/babel-preset-stage-0/README.md |
| babel-polyfill | 来模拟实现浏览器本身不支持的对象或方法 https://github.com/jamiebuilds/babel-handbook/blob/master/translations/zh-Hans/user-handbook.md#toc-babel-polyfill |
| babel-plugin-import | 自动转换为按需引入的方式 https://segmentfault.com/a/1190000019322275 |
| babel-plugin-module-resolver | 设置一个自定义别名目录 https://github.com/tleunen/babel-plugin-module-resolver |
| babel-plugin-syntax-dynamic-import | 懒加载 |