HotModuleReplacement. Js cannot run on IE11

[heruiwoniou]

Version: 3.2.1-alpha.1

Reason: IE11 cannot resolve the features of ES6 such as const.

Can it fix the problem?

Thanks.

[ScriptedAlchemy]

Open a pull request and re-configure my babel or eslint builds to stop it from breaking :)

[heruiwoniou]

I have already submitted PR, I don't know if there is any irregularity, this is my first time to submit PR on Github.