Firebase Adapter Status
The firebase adapter is present in package version 2.1.1, but it cannot be activated.
Its implementation imports firebase/crashlytics. The Firebase JavaScript SDK does not export that
module, so useAdapter('firebase', config) rejects during SDK loading. Installing firebase does not
resolve the failure.
Use another supported service adapter or a custom adapter for a web application.
Do not use the firebase adapter until a package release replaces or removes the unsupported import.
This limitation concerns the package adapter. It does not require any change to an application's existing Firebase backend.