es5封装Promise
https://blog.csdn.net/jind325/article/details/105384128
强制缓存与协商缓存
https://www.jianshu.com/p/9c95db596df5
立即执行函数
https://zhuanlan.zhihu.com/p/22465092
babel编译原理
https://juejin.cn/post/6921529698686074887
webpack运行原理
https://juejin.cn/post/6943468761575849992