Strange configuration of eslint-config-react-app

Created by: adam-golab

Could someone explain to me what's going on with this hardcoded version (999.999.999)? It looks like there may be some errors in the future caused by the wrong version.

https://github.com/facebook/create-react-app/blob/4c7c3c5e28b7840de42755a17112804ff5a18c25/packages/react-scripts/config/webpack.config.js#L317