FirebaseUI Web is a multi-package library that provides pre-built authentication UI components for web applications using Firebase Auth. It supports multiple frameworks (React, Angular, shadcn) with a shared core package that handles auth logic, state management, error handling, and internationalization. The library includes ready-to-use sign-in, sign-up, phone, email link, OAuth, and multi-factor authentication (SMS/TOTP) flows, all customizable via a composable behavior system. It is published as npm packages (@firebase-oss/ui-*) and includes extensive examples and end-to-end tests with Playwright against the Firebase Auth Emulator.
Friendly Eats is an Android restaurant recommendation app that uses Firebase Firestore for real-time data synchronization and Firebase Authentication for user sign-in. The app features a main screen with a filterable and sortable list of restaurants, a detail view for individual restaurants, and the ability to add ratings. The architecture follows Android Jetpack guidelines with a single activity, multiple fragments, ViewModel for UI state, and the Navigation component for fragment transactions. Firestore queries are used to fetch and listen to restaurant data, with transactions ensuring data consistency when adding ratings.