Prevent ESLint errors from aborting build during development
Not being able to build using the development server whenever there are ESLint errors is a pain.
This change updates react-scripts to 4.0.3 in order to make the option ESLINT_NO_DEV_ERRORS available. This option makes all eslint errors appear as warnings during dev build. It is enabled in our .env file.
Edited by John Sparger