v12.9.0

• Revert enabling preferRest by default to avoid performance degradations for some users (#6520).
• Fix blocking functions in the emulator when using multiple codebases (#6504).
• Add force flag call-out for bypassing prompts (#6506).
• Fixed an issue where the functions emulator did not respect the --log-verbosity flag (#2859).
• Add the ability to look for the default Hosting site via Hosting's API.
• Add logic to create a Hosting site when one is not available in a project.
• Add checks for the default Hosting site when one is assumed to exist.

v12.8.1

• Fixed 2 bugs (unintended database mode changes and disabling of PITR or delete-protection) when updating Firestore databases (#6478)

v12.8.0

• Enable preferRest option by default for Firestore functions. (#6147)
• Fixed a bug where re-deploying 2nd Gen Firestore function failed after updating secrets. (#6456)
• Fixed a bug where similarly-named Hosting channels would cause issues when updating authorized domains. (#6356)

v12.7.0

• Fix type mismatch for parametrized function region. (#6205)
• Ignore FIRESTORE_EMULATOR_HOST environment variable on functions deploy. (#6442)
• Added support for enabling, disabling, and displaying Point In Time Recovery enablement state on Firestore databases (#6388)
• Added a --verbosity flag to emulators:* commands that limits what logs are printed (#2859)
• Fixed an issue where params would not be resolved when used to set VPC connector during functions deployment (#6327)

v12.6.2

• Fixed an issue with deploying multilevel grouped functions containing v2 functions. (#6419)
• Fixed an issue where functions deployment required a new permission.

v12.6.1

• Fixed an issue where the functions service account option was not treated as a param (#6389).
• Fixed an issue with deploying function groups containing v2 functions. (#6408)
• Use GetDefaultBucket endpoint to fetch Storage Default Bucket.

v12.6.0

• Improve performance and reliability when deploying multiple 2nd gen functions using single builds. (#6376)
• Fixed an issue where emulators:export did not check if the target folder is empty. (#6313)
• Fixed an issue where retry could not be set for event triggered functions. (#6391)
• Fixed "Could not find the next executable" on Next.js deployments (#6372)
• Fixed issues caused by breaking changes in Next >=v13.5.0. (#6382)

v12.5.4

• Released Firestore emulator v1.18.2.
  • Removed nano precision in timestamp used in Firestore emulator (#5893)
  • Fixed a bug where query behaves differently from production.
• Fixed an issue where very long command outputs would be cut off. (#3286)

v12.5.3

• Fixed an issue where builds from https://firebase.tools could not run commands that spawn npm. (#6132)
• Fixed an issue where --non-interactive and --force were not respected in some extension deploys. (#6321)
• Fixed the regex in extensions changelog parser to lazy match the version prefix to allow matching higher versions (#6326)

v12.5.2

• Fixed an issue causing unexpected behavior and errors on functions deploy. (#6290)