Emulator Idempotency: Database - Closed, new Revision available.

[DellaBitta]

Do not merge

Waiting for the PRs for Auth and Firestore to be in place so all three may be merged at the same time.

Discussion

Update the connectDatabaseEmulator function to support its invocation more than once. If the Database instance is already in use, and connectDatabaseEmulator is invoked with the same configuration, then the invocation will now succeed instead of assert.

This unlocks support for web frameworks which may render the page numerous times with the same instances of RTDB. Before this PR customers needed to add extra code to guard against calling connectDatabaseEmulator in their SSR logic. Now we do that guarding logic on their behalf which should simplify our customer's apps.

Fixes #6824.

Testing

CI, new tests added to integration tests.

API Changes

N/A

[changeset-bot]

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Latest commit: dffe5b4

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[github-actions]

Vertex AI Mock Responses Check ⚠️

A newer major version of the mock responses for Vertex AI unit tests is available. update_vertexai_responses.sh should be updated to clone the latest version of the responses: v6.1

[google-oss-bot]

Size Report ¹

Affected Products

• @firebase/database

  Type	Base (5250e80)	Merge (48fb170)	Diff
  browser	249 kB	249 kB	-104 B (-0.0%)
  main	254 kB	254 kB	-104 B (-0.0%)
  module	249 kB	249 kB	-104 B (-0.0%)

• @firebase/database-compat/standalone

  Type	Base (5250e80)	Merge (48fb170)	Diff
  main	366 kB	366 kB	-104 B (-0.0%)

• bundle

  Type	Base (5250e80)	Merge (48fb170)	Diff
  database (Append to a list of data)	150 kB	149 kB	-100 B (-0.1%)
  database (Filtering data)	148 kB	148 kB	-100 B (-0.1%)
  database (Listen for child events)	165 kB	165 kB	-100 B (-0.1%)
  database (Listen for value events + Detach listeners)	165 kB	165 kB	-100 B (-0.1%)
  database (Listen for value events)	165 kB	165 kB	-100 B (-0.1%)
  database (Read data once)	164 kB	164 kB	-100 B (-0.1%)
  database (Save data as transactions)	167 kB	167 kB	-100 B (-0.1%)
  database (Sort data)	150 kB	150 kB	-100 B (-0.1%)
  database (Write data)	149 kB	149 kB	-100 B (-0.1%)

• firebase

  Type	Base (5250e80)	Merge (48fb170)	Diff
  firebase-compat.js	791 kB	791 kB	-97 B (-0.0%)
  firebase-database-compat.js	164 kB	164 kB	-97 B (-0.1%)
  firebase-database.js	187 kB	186 kB	-100 B (-0.1%)

Test Logs

• Base (5250e80): https://github.com/firebase/firebase-js-sdk/actions/runs/13167326930
• Merge (48fb170): https://github.com/firebase/firebase-js-sdk/actions/runs/13181231709

1. https://storage.googleapis.com/firebase-sdk-metric-reports/YNy7mJBFR1.html

[google-oss-bot]

Size Analysis Report ¹

Affected Products

• @firebase/database

  • connectDatabaseEmulator

    Size

    Type	Base (5250e80)	Merge (48fb170)	Diff
    size	117 kB	117 kB	-99 B (-0.1%)
    size-with-ext-deps	140 kB	140 kB	-100 B (-0.1%)

  • getDatabase

    Size

    Type	Base (5250e80)	Merge (48fb170)	Diff
    size	117 kB	117 kB	-99 B (-0.1%)
    size-with-ext-deps	147 kB	147 kB	-100 B (-0.1%)

Test Logs

• Base (5250e80): https://github.com/firebase/firebase-js-sdk/actions/runs/13167326930
• Merge (48fb170): https://github.com/firebase/firebase-js-sdk/actions/runs/13181231709

1. https://storage.googleapis.com/firebase-sdk-metric-reports/n4kjbXVXBP.html