/**
 * An example to show how to leverage axios lib to fetch remote data by [email protected] ([email protected])
 * (Btw, Vue.js formally leverage axios for ajax related works, so it should be good if React.js also use it)
 *
 * Date: Nov 25, 2017
 */

Change from
// You need input correct axios.min.js link address in public\static\index.html
// I personally download axios.min.js proactive in put it into public\static\js folder
// <script src="%PUBLIC_URL%/static/js/axios.min.js"></script>
// or you can put   <script src="https://unpkg.com/axios/dist/axios.min.js"></script>     into index.html to avoid proactive download to local
// And we provide a simple fun to wrap axios.js, it is not type safe, suggest JB team to provide a formal wrapping for this useful lib

to
@jsmodule("axios")

Refactor onChangeFunction to 2 small fun.
Add simple type for the axios.

I am not familiar with how to add type for external javascript lib.  Please feel free to upgrade/enhance from my code directly. Thanks.

change js{} to jsObject{} for type safe

Add typing both for axios response and error

Add more typing for axios config/response/error
Now, people should be able leverage typed axios lib to more easily  co-work with Kotlin-React to create a real app.

Add response data type

add errorMessage field

It finally works for geeric type:)
Thanks for @Hypnosphi professional advice, does learn something from him!