https://zhongsp.gitbooks.io/typescript-handbook/content/doc/handbook/Basic%20Types.html
https://segmentfault.com/a/1190000011744210
https://www.jianshu.com/p/75eb8ca6df71
https://gitbook.cn/books/5a6c19e3dec8404943b98a80/index.html
https://zhongsp.gitbooks.io/typescript-handbook/content/doc/handbook/Basic%20Types.html
阅读
https://ts.xcatliu.com/introduction/what-is-typescript.html