Creating a library similar to Firebase

Develop a library that reproduces Firebase functionality, intended for integration and use by companies. Package the solution as a ready-to-distribute package that can be shared with clients.

Requirements:

• Design an architecture that ensures scalability and reliability.
• Implement core services (authentication, real-time database, file storage, push notifications).
• Provide a mechanism for configuration and initialization of the library.
• Ensure easy integration into a company's project and further expansion of functionality.
• Package the library as a public artifact (npm/ Maven/ NuGet, etc.) with complete documentation and usage examples.