mini-css-extract-plugin throws "Conflicting order" errors during build

Created by: dviry

(react-scripts 2.0.4) Same as in this issue I am getting a lot of errors from the mini-css-extract-plugin when doing a CI build - which fails since no warnings are allowed. Since CRA does not allow customizing the WebPack plugin config, I cannot use the warningsFilters and the question about CRA also already popped up.

I am not sure what the CRA team can do about this - but maybe just keep an eye on it (or have it documented as a Known Issue) until WebPack somehow solves it.

PS: for now I am running "set CI=&&react-scripts build" to disable the CI build warnings limit.