Our docs are outdated. People are getting confused thinking they need to eject: https://github.com/facebookincubator/create-react-app/issues/3268. Need to fix the rAF warning and then put something like https://github.com/facebookincubator/create-react-app/issues/3199#issuecomment-334801311 in the docs both here and in Enzyme.