built a website with antd pro 2.0, and there was a problem when supporting IE11;
is going to solve it by loading a series of plug-ins for babel. When loading babel-polyfill, because umi is introduced in the way of webpack-chain, rather than using webpack.config.js, I am not familiar with it, could you tell me how to introduce it?
the current situation is to open the report "promise" with IE11