beiciye

For ES5 bundle, it seems not working to use tree shaking with Babili.

babel-polyfill怎么抽出来的呢，如果我不把babel-polyfill打包进去，打包的后的页面会报错

I have also met this issue

@mxstbr OK , I will try my best

to fix the `npm start` and `build` on windows