How can one tell the version of React running at runtime in the browser?

Question

Is there a way to know the runtime version of React in the browser?

Answer 1

For an app created with create-react-app I managed to see the version:

1. Open Chrome Dev Tools / Firefox Dev Tools,
2. Search and open main.XXXXXXXX.js file where XXXXXXXX is a builds hash /could be different,
3. Optional: format source by clicking on the {} to show the formatted source,
4. Search as text inside the source for react-dom,
5. in Chrome was found: "react-dom": "^16.4.0",
6. in Firefox was found: 'react-dom': '^16.4.0'

The app was deployed without source map.