An in-range update of styled-components is breaking the build 🚨 about react-universal-app HOT 5 OPEN

• Make it possible to initialize SC_ATTR and SC_DISABLE_SPEEDY via REACT_APP_* .env variables for easier integration with CRA applications (see #2501)

• Fix components being folded inappropriately when an interim HOC is present (see #2586)

• Fix theme prop for styled native components, also fixes theme in
  defaultProps for them (see #2576)

• Add "forwardedAs" prop to allow deeply passing a different "as" prop value to underlying components
  when using styled() as a higher-order component (see #2580)

• Implement defaultProps folding (see #2597)

• Revert #2586; breaks rehydration in dev for certain runtimes like next.js

We'll explore reintroducing it in v5 but better safe than sorry.

Fix usage of the "css" prop with the styled-components babel macro (relevant to CRA 2.x users), by @jamesknelson (see #2633)

• Fix styled-components's react-native import for React Native Web, by @fiberjw (see #2797)

• Remove dev-time warning if referencing a theme prop without an outer ThemeProvider, the check for it isn't smart enough to handle cases with "or" or ternary fallbacks and creates undesirable noise in various third party integrations