Removing support for .bolt rules

[joehan]

Description

Bolt was effectively deprecated long ago - we last made changes to firebase-bolt in 2018 (https://github.com/FirebaseExtended/bolt) and it was archived recently. I'd like to drop support for it in the next major version.

[gemini-code-assist]

Summary of Changes

Hello @joehan, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request fully deprecates and removes support for Firebase Bolt rules within the Firebase CLI tools. Given that Bolt was archived and effectively deprecated long ago, this change aligns the tooling by eliminating all parsing and processing logic for .bolt files. Users attempting to deploy or use .bolt rules will now receive a clear error message, guiding them towards current security rule formats.

Highlights

• Removal of Bolt Rules Support: All code paths related to parsing and handling .bolt rules files have been removed from the codebase.
• Error Handling for Bolt Files: Attempting to use .bolt files will now result in a FirebaseError being thrown, explicitly stating that support for .bolt rules has been discontinued as of [email protected].
• Deletion of parseBoltRules Utility: The dedicated src/parseBoltRules.ts file, which contained the logic for parsing Bolt rules, has been entirely removed.

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[gemini-code-assist]

Code Review

This pull request correctly removes support for the deprecated .bolt rules format. The changes are well-contained, removing the parseBoltRules.ts file and updating configurations and deployment scripts to throw an error when a .bolt file is used. I have one suggestion to improve the error handling in the database emulator to make it consistent with the other changes and provide a better user experience.

[nguymichael]

I have no strong opinions here -- but if we're no longer supporting it, removing it makes sense to me.