Best way to polyfill ES6 features in React app that uses create-react-app

Question

I\'ve been testing my React.js application on internet explorer, and finding that some ES6/7 code like Array.prototype.includes() breaks it.

I\'m using

Answer 1

For what it's worth I was having issues with the new Google Search Console and my React app (create-react-app). After adding the es6shim, all was resolved.

I added the below to my public index.html page.