Depends on D12772. This diff adds styled-components to the library's peerDependencies. This diff will cause the build script to fail as the TestComponent uses an external CSS file. In a later diff which will update the component generation script, the TestComponent will be replaced with a new boiler plate component that passes the build process.
This diff is based on the styled-component branch found here: https://github.com/HarveyD/react-component-library/compare/master...styled-components