Packages in this directory are published independently of other packages in the repository and should not be symlinked in development. They may be depended on by packages in packages/ but should be consciously and carefully versioned. It's likely that libraries here should be moved somewhere else or need to be fundamentally re-designed, eg: configure-splash-screen lives here because it only supports one very specific version of expo-splash-screen at any given time, but it should probably support multiple versions of expo-splash-screen.
The publish script used for packages will not publish packages from this directory. They should be published manually when needed, and updates to other libraries that depend on them should be updated manually.