Running CRA on ie11.

This project was bootstrapped with Create React App.

Available Scripts

In the project directory, you can run:

Runs the app in the development mode.
Open http://localhost:3000 to view it in the browser.

The page will reload if you make edits.
You will also see any lint errors in the console.

npx create-react-app my-app and cd my-app
Install react-app-polyfill
npm i react-app-polyfill
Import react-app-polyfill/ie11 at the TOP of index.js
import 'react-app-polyfill/ie11'

Despite, all this, if IE11 continues to show the dreaded,

SCRIPT1002: Syntax error
0.chunk.js (15,34)
SCRIPT1002: Syntax error
main.chunk.js (280,62)

Try running npm cache clean --force