feat(rc): Web support for ABT & Rollouts #9293

athiramanu · 2025-10-03T06:20:24Z

This change is part of the feature to support Web Experiments in Remote Config. Changes can be broken down as below:

Introduces the experiment details in the fetch response type
Extracts experiments received from the fetch response and saves in indexedDB
Sets the experiment and variant received as user property

Design doc (internal): go/experiments-web

* feat: Process experiment metadata in RC fetch response * [Fix] Storage cache is not updating when there are no experiments in response * Add result of running yarn docgen:all * Address review comments * Fix yarn format failures * yarn docgen changes added * Export firebaseExperimentDescription --------- Co-authored-by: Athira M <[email protected]>

* feat: Process experiment metadata in RC fetch response * [Fix] Storage cache is not updating when there are no experiments in response * Add result of running yarn docgen:all * feat: Process experiment metadata in RC fetch response * feat: Add ABT support for remote config * [Fix] Storage cache is not updating when there are no experiments in response * Merge conflict fix * Yarn format fix * Fix merge conflicts * Address review comments * Fix yarn format failures * yarn docgen changes added * Export firebaseExperimentDescription * Address review comments --------- Co-authored-by: Athira M <[email protected]>

* feat: Process experiment metadata in RC fetch response * feat: Add ABT support for remote config * feat: Integrate firebase internal analytics with ABT * [Fix] Storage cache is not updating when there are no experiments in response * feat: Process experiment metadata in RC fetch response * [Fix] Storage cache is not updating when there are no experiments in response * Add result of running yarn docgen:all * feat: Process experiment metadata in RC fetch response * feat: Add ABT support for remote config * [Fix] Storage cache is not updating when there are no experiments in response * Merge conflict fix * Yarn format fix * Fix merge conflicts * Integrate ABT with Firebase analytics to add experiment as UP * Fix yarn format errors * Address review comments * Fix yarn format failures * yarn docgen changes added * Export firebaseExperimentDescription * Address review comments * Address review comments * Add unit tests * Add error handling * Remove log --------- Co-authored-by: Athira M <[email protected]>

changeset-bot · 2025-10-03T06:20:28Z

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google-oss-bot · 2025-10-03T06:30:12Z

Size Report ¹

Affected Products

@firebase/ai
Type Base (ccbf7ba) Merge (e879edd) Diff
browser 63.3 kB 65.1 kB +1.81 kB (+2.9%)
main 67.1 kB 69.0 kB +1.90 kB (+2.8%)
module 63.3 kB 65.1 kB +1.81 kB (+2.9%)
@firebase/auth
Type Base (ccbf7ba) Merge (e879edd) Diff
browser 188 kB 188 kB +41 B (+0.0%)
cordova 161 kB 161 kB +41 B (+0.0%)
main 144 kB 144 kB +41 B (+0.0%)
module 188 kB 188 kB +41 B (+0.0%)
react-native 161 kB 161 kB +41 B (+0.0%)
@firebase/auth-cordova
Type Base (ccbf7ba) Merge (e879edd) Diff
browser 161 kB 161 kB +41 B (+0.0%)
module 161 kB 161 kB +41 B (+0.0%)
@firebase/auth-web-extension
Type Base (ccbf7ba) Merge (e879edd) Diff
browser 139 kB 139 kB +41 B (+0.0%)
main 155 kB 156 kB +41 B (+0.0%)
module 139 kB 139 kB +41 B (+0.0%)
@firebase/auth/internal
Type Base (ccbf7ba) Merge (e879edd) Diff
browser 198 kB 198 kB +41 B (+0.0%)
main 169 kB 169 kB +41 B (+0.0%)
module 198 kB 198 kB +41 B (+0.0%)
@firebase/remote-config
Type Base (ccbf7ba) Merge (e879edd) Diff
browser 39.0 kB 41.4 kB +2.40 kB (+6.1%)
main 40.2 kB 42.6 kB +2.40 kB (+6.0%)
module 39.0 kB 41.4 kB +2.40 kB (+6.1%)
bundle
Type Base (ccbf7ba) Merge (e879edd) Diff
remote-config (getAndFetch) 59.4 kB 60.9 kB +1.51 kB (+2.5%)

`firebase`

Type	Base (`ccbf7ba`)	Merge (`e879edd`)	Diff
firebase-ai.js	49.9 kB	51.3 kB	+1.32 kB (+2.6%)
firebase-auth-cordova.js	139 kB	139 kB	+41 B (+0.0%)
firebase-auth-web-extension.js	122 kB	122 kB	+41 B (+0.0%)
firebase-auth.js	159 kB	159 kB	+41 B (+0.0%)
firebase-compat.js	809 kB	811 kB	+1.43 kB (+0.2%)
firebase-remote-config-compat.js	38.7 kB	40.1 kB	+1.43 kB (+3.7%)
firebase-remote-config.js	43.5 kB	45.0 kB	+1.48 kB (+3.4%)

Test Logs

https://storage.googleapis.com/firebase-sdk-metric-reports/YCgC9PmvRE.html

google-oss-bot · 2025-10-03T06:41:58Z

Size Analysis Report ¹

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Test Logs

https://storage.googleapis.com/firebase-sdk-metric-reports/Jbh45Y30Wd.html

nk-1983 · 2025-10-03T10:06:05Z

packages/remote-config/src/public_types.ts

+  // months.
+  timeToLiveMillis: string;
+
+  // A repeated of Remote Config parameter keys that this experiment is


This doesn't seem to read correctly.

Updated. Let me know whether it makes sense now

nk-1983 · 2025-10-03T10:10:47Z

docs-devsite/remote-config.fetchresponse.md


+## FetchResponse.experiments
+
+A/B Test and Rollout experiment metadata.


Metadata for A/B testing and Remote Config Rollout experiments

jenh

Note: @nk-1983 also approved this CL, but it didn't get firebase-tw approval due to a group sync issue (should be resolved now!).

hsubox76

Add a changeset to ensure this will be published. Use yarn changeset and follow the dialog. It's fine if you mess up, you can edit the file after it's created. The bump should be minor. Manually add "firebase: minor" to the file after it's created - see https://g3doc.corp.google.com/firebase/jscore/g3doc/contributing/changeset.md?cl=head

packages/remote-config/src/abt/experiment.ts

* Bug fixes * yarn format fail * update event name * Ensure user property is parsed * Add firebase prefix to exp

athiramanu and others added 3 commits September 27, 2025 16:42

athiramanu requested review from a team and erikeldridge as code owners October 3, 2025 06:20

athiramanu requested a review from nk-1983 October 3, 2025 06:47

nk-1983 reviewed Oct 3, 2025

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Fix messages and docs

fa63f97

nk-1983 approved these changes Oct 7, 2025

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athiramanu requested review from hsubox76, jenh, kjelko and nk-1983 October 8, 2025 04:48

jenh approved these changes Oct 8, 2025

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hsubox76 reviewed Oct 9, 2025

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packages/remote-config/src/abt/experiment.ts Outdated Show resolved Hide resolved

Update error messages

b5f96dd

athiramanu requested a review from ashish-kothari October 11, 2025 04:45

ashish-kothari approved these changes Oct 15, 2025

View reviewed changes

Fix feature defects if Web Experiments (#9327)

851a47f

* Bug fixes * yarn format fail * update event name * Ensure user property is parsed * Add firebase prefix to exp


		## FetchResponse.experiments

		A/B Test and Rollout experiment metadata.

feat(rc): Web support for ABT & Rollouts #9293

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feat(rc): Web support for ABT & Rollouts #9293

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Size Report 1

Affected Products

@firebase/ai

@firebase/auth

@firebase/auth-cordova

@firebase/auth-web-extension

@firebase/auth/internal

@firebase/remote-config

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Size Report ¹

`@firebase/ai`

`@firebase/auth`

`@firebase/auth-cordova`

`@firebase/auth-web-extension`

`@firebase/auth/internal`

`@firebase/remote-config`

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`firebase`

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