Firebase Docs Reference FirebaseCore Framework Reference Enumerations The following enumerations are available globally. FIRLoggerLevel The log levels used by internal logging. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated June 20, 2018.