聚沙

很有创意的代码

http://codepen.io/jakealbaugh/full/JoVrdw/

bebel

https://www.zfanw.com/blog/babel-6.html

https://babeljs.io/docs/learn-es2015/#promises

http://babeljs.io/docs/usage/polyfill/

http://babeljs.io/docs/plugins/transform-runtime/

http://www.ruanyifeng.com/blog/2016/01/babel.html

https://github.com/babel/babel/blob/master/packages/babel-plugin-transform-runtime/src/definitions.js