Fix feature defects if Web Experiments

[athiramanu]

Bug 1: Experiments are never set as UP if analytics connection fails
eg:
IndexedDB: exp_1, exp_2
Fetch response: { exp_1: 1, exp_2: 0, exp_3: 1}
Diff result: {exp_3}
IndexedDB updated to exp_1, exp_2, exp_3

in this scenario if setUserProperty was not called, exp_3 will never come in the diff result and hence the experiment will not be set on GA

Fix: Skip the diff call and always send the entire list

Bug 2: gtag does not set user property until a logEvent call occurs

Fix: After setting UP ABT will log an event that ABT was updated

[changeset-bot]

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Latest commit: 88d0a1c

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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: v15.0

[google-oss-bot]

Size Report ¹

Affected Products

• @firebase/remote-config

  Type	Base (b5f96dd)	Merge (553b9d0)	Diff
  browser	41.5 kB	41.4 kB	-34 B (-0.1%)
  main	42.7 kB	42.6 kB	-34 B (-0.1%)
  module	41.5 kB	41.4 kB	-34 B (-0.1%)

• bundle

  Type	Base (b5f96dd)	Merge (553b9d0)	Diff
  remote-config (getAndFetch)	60.9 kB	60.9 kB	+38 B (+0.1%)

• firebase

  Type	Base (b5f96dd)	Merge (553b9d0)	Diff
  firebase-compat.js	811 kB	811 kB	+39 B (+0.0%)
  firebase-remote-config-compat.js	40.1 kB	40.1 kB	+39 B (+0.1%)
  firebase-remote-config.js	45.0 kB	45.0 kB	+43 B (+0.1%)

Test Logs

• Base (b5f96dd): https://github.com/firebase/firebase-js-sdk/actions/runs/18400568906
• Merge (553b9d0): https://github.com/firebase/firebase-js-sdk/actions/runs/18703256501

1. https://storage.googleapis.com/firebase-sdk-metric-reports/e0D86lLdpt.html

[google-oss-bot]

Size Analysis Report ¹

Affected Products

• @firebase/remote-config

  • activate

    Size

    Type	Base (b5f96dd)	Merge (553b9d0)	Diff
    size	25.0 kB	25.0 kB	+38 B (+0.2%)
    size-with-ext-deps	51.5 kB	51.5 kB	+38 B (+0.1%)

  • fetchAndActivate

    Size

    Type	Base (b5f96dd)	Merge (553b9d0)	Diff
    size	25.6 kB	25.7 kB	+38 B (+0.1%)
    size-with-ext-deps	52.1 kB	52.2 kB	+38 B (+0.1%)

Test Logs

• Base (b5f96dd): https://github.com/firebase/firebase-js-sdk/actions/runs/18400568906
• Merge (553b9d0): https://github.com/firebase/firebase-js-sdk/actions/runs/18703256501

1. https://storage.googleapis.com/firebase-sdk-metric-reports/haA1cLHCkB.html

[hsubox76]

Are event names allowed to have spaces? I think it might be safer to use "set_firebase_experiment_state" as Sam suggested.

[athiramanu]

Done