v3.10.1

• Firebase CLI is only compatible with Node.js v4.x or v5.10 and greater. This has been true for some time, but is now properly reflected in the engines requirement.
• Fixed issue with project aliases not persisting correctly.
• Fixed issue with nested objects and functions:config:set.

v3.10.0

• The Firebase CLI now supports Google Application Default Credentials for authentication.
• The --json and --non-interactive behaviors of firebase use have been improved.
• An issue with functions ignore rules has been addressed.

v3.9.2

• Added --no-collapse flag to "firebase database:profile" to prevent collapsing of similiar path names in report.
• __session cookie is now properly emulated for Hosting function calls.
• Fixed bug where hidden folders and files were ignored during functions deploy.
• Fixed bug where functions were emulated on 2 ports higher than was specified in the --port flag.

v3.9.1

• Fixes bug where firebase functions:config:set does not work with numeric values.
• Fixes issues using firebase-admin SDK in locally emulated functions (e.g. writing to a database).

v3.9.0

• Adds support for Cloud Function rewrites in Firebase Hosting via deploy and firebase serve.

v3.8.0

• [Experimental] Add ability to locally emulate HTTPS functions with "firebase serve --only functions". Run "firebase serve --only functions,hosting" to serve both functions and hosting.
• Add ability to target specific functions and export groups when deploying functions with "firebase deploy --only functions:function1,functions:groupA.function2".

v3.7.0

• Fixed bug where running "firebase functions:config:set" with JSON created extra quotes.
• Fixed bug that caused intermittent failures in many-function deploys.

v3.6.1

• Fixes broken 'firebase init' workflow where the firebase-admin module that was installed does not fulfill firebase-function's peer dependency.
• Fixes bug where deploying functions overrides custom timeout and memory allocation with default values.

v3.6.0

• You may need to re-authorize with firebase login --reauth to take advantage of the new Hosting SDK auto-configuration. You will see a prompt when running firebase deploy if this is the case.
• Adds setup:web command to print out JS SDK initialization information.
• Adds Hosting support for SDK auto-configuration in serve command.
• Adds Hosting support for SDK auto-configuration when deploying.
• Corrected typo in docs URL for Cloud Functions default template.
• Deploy now fails if no valid deploy targets are found (including --only with typos).
• Can now run firebase serve from subdirectories of a project.
• Can call commands with empty arguments when using programmatically (e.g. fbcli.list()).
• Improved error messages when authentication issues occur.

v3.5.0

• Adds Cloud Functions for Firebase support, including function deployment and functions:* commands.
• database:profile command provides performance profiling insights for the Realtime Database.
• Some new features of the CLI require additional authorization scopes. You may be asked to sign in again with firebase login --reauth.