Move AnimationBackend initialization from Animated #55103

bartlomiejbloniarz · 2026-01-09T11:39:20Z

Summary:
This diff decouples AnimationBackend from Animated. Now the backend is intialized in the Scheduler, from where it's passed to UIManager. Animation frontends (such as Animated) can then obtain a reference to the backend, and use it to schedule animation frame updates.

Changelog

[General] [Changed] - Moved AnimationBackend initiailzation to Scheduler
[General] [Added] - AnimationChoreographer interface with an implementation for fantom tests

Differential Revision: D89663251

meta-codesync · 2026-01-09T11:39:37Z

@bartlomiejbloniarz has exported this pull request. If you are a Meta employee, you can view the originating Diff in D89663251.

github-actions · 2026-01-09T11:43:11Z

Job Summary for Gradle

Test All :: build_android

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
react-native-github	publishAllToMavenTempLocal build	9.0.0	❌

github-actions · 2026-01-09T11:44:11Z

Job Summary for Gradle

Test All :: run_fantom_tests

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
react-native-github	:private:react-native-fantom:buildFantomTester	9.0.0	❌

Summary: This diff decouples AnimationBackend from Animated. Now the backend is intialized in the Scheduler, from where it's passed to UIManager. Animation frontends (such as Animated) can then obtain a reference to the backend, and use it to schedule animation frame updates. # Changelog [General] [Changed] - Moved AnimationBackend initiailzation to `Scheduler` [General] [Added] - `AnimationChoreographer` interface with an implementation for fantom tests Differential Revision: D89663251

github-actions · 2026-01-09T12:04:50Z

Job Summary for Gradle

Test All :: build_android

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
react-native-github	publishAllToMavenTempLocal build	9.0.0	❌

github-actions · 2026-01-09T12:05:12Z

Job Summary for Gradle

Test All :: run_fantom_tests

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
react-native-github	:private:react-native-fantom:buildFantomTester	9.0.0	❌

Summary: This diff decouples AnimationBackend from Animated. Now the backend is intialized in the Scheduler, from where it's passed to UIManager. Animation frontends (such as Animated) can then obtain a reference to the backend, and use it to schedule animation frame updates. # Changelog [General] [Changed] - Moved AnimationBackend initiailzation to `Scheduler` [General] [Added] - `AnimationChoreographer` interface with an implementation for fantom tests Differential Revision: D89663251

github-actions · 2026-01-09T14:18:51Z

Job Summary for Gradle

Test All :: build_android

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
react-native-github	publishAllToMavenTempLocal build	9.0.0	❌

github-actions · 2026-01-09T14:19:43Z

Job Summary for Gradle

Test All :: run_fantom_tests

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
react-native-github	:private:react-native-fantom:buildFantomTester	9.0.0	❌

Summary: Pull Request resolved: #55103 This diff decouples AnimationBackend from Animated. Now the backend is intialized in the Scheduler, from where it's passed to UIManager. Animation frontends (such as Animated) can then obtain a reference to the backend, and use it to schedule animation frame updates. # Changelog [General] [Changed] - Moved AnimationBackend initiailzation to `Scheduler` [General] [Added] - `AnimationChoreographer` interface with an implementation for fantom tests Differential Revision: D89663251

github-actions · 2026-01-09T14:52:29Z

Job Summary for Gradle

Test All :: build_android

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
react-native-github	publishAllToMavenTempLocal build	9.0.0	❌

github-actions · 2026-01-09T14:53:15Z

Job Summary for Gradle

Test All :: run_fantom_tests

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
react-native-github	:private:react-native-fantom:buildFantomTester	9.0.0	❌

Summary: Pull Request resolved: #55103 This diff decouples AnimationBackend from Animated. Now the backend is intialized in the Scheduler, from where it's passed to UIManager. Animation frontends (such as Animated) can then obtain a reference to the backend, and use it to schedule animation frame updates. # Changelog [General] [Changed] - Moved AnimationBackend initiailzation to `Scheduler` [General] [Added] - `AnimationChoreographer` interface with an implementation for fantom tests Differential Revision: D89663251

github-actions · 2026-01-09T15:01:21Z

Job Summary for Gradle

Test All :: build_android

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
react-native-github	publishAllToMavenTempLocal build	9.0.0	❌

github-actions · 2026-01-09T15:02:37Z

Job Summary for Gradle

Test All :: run_fantom_tests

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
react-native-github	:private:react-native-fantom:buildFantomTester	9.0.0	❌

Summary: Pull Request resolved: #55103 This diff decouples AnimationBackend from Animated. Now the backend is intialized in the Scheduler, from where it's passed to UIManager. Animation frontends (such as Animated) can then obtain a reference to the backend, and use it to schedule animation frame updates. # Changelog [General] [Changed] - Moved AnimationBackend initiailzation to `Scheduler` [General] [Added] - `AnimationChoreographer` interface with an implementation for fantom tests Differential Revision: D89663251

react-native-bot · 2026-01-09T15:15:50Z

This pull request was successfully merged by Bartlomiej Bloniarz in b090c23

^{When will my fix make it into a release? | How to file a pick request?}

github-actions · 2026-01-09T15:20:18Z

Job Summary for Gradle

Test All :: run_fantom_tests

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
react-native-github	:private:react-native-fantom:buildFantomTester	9.0.0	❌

Differential Revision: D89663244

Summary: Pull Request resolved: #55103 This diff decouples AnimationBackend from Animated. Now the backend is intialized in the Scheduler, from where it's passed to UIManager. Animation frontends (such as Animated) can then obtain a reference to the backend, and use it to schedule animation frame updates. # Changelog [General] [Changed] - Moved AnimationBackend initiailzation to `Scheduler` [General] [Added] - `AnimationChoreographer` interface with an implementation for fantom tests Differential Revision: D89663251

github-actions · 2026-01-12T11:19:20Z

Job Summary for Gradle

Test All :: build_android

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
react-native-github	publishAllToMavenTempLocal build	9.0.0	❌

github-actions · 2026-01-12T11:20:05Z

Job Summary for Gradle

Test All :: run_fantom_tests

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
react-native-github	:private:react-native-fantom:buildFantomTester	9.0.0	❌

Summary: Pull Request resolved: #55103 This diff decouples AnimationBackend from Animated. Now the backend is intialized in the Scheduler, from where it's passed to UIManager. Animation frontends (such as Animated) can then obtain a reference to the backend, and use it to schedule animation frame updates. # Changelog [General] [Changed] - Moved AnimationBackend initiailzation to `Scheduler` [General] [Added] - `AnimationChoreographer` interface with an implementation for fantom tests Differential Revision: D89663251

react-native-bot · 2026-01-12T11:39:33Z

This pull request was successfully merged by Bartlomiej Bloniarz in ede988f

^{When will my fix make it into a release? | How to file a pick request?}

github-actions · 2026-01-12T11:44:24Z

Job Summary for Gradle

Test All :: run_fantom_tests

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
react-native-github	:private:react-native-fantom:buildFantomTester	9.0.0	❌

meta-cla bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Jan 9, 2026

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facebook-github-bot force-pushed the export-D89663251 branch from d30a62f to 8518901 Compare January 9, 2026 11:59

facebook-github-bot force-pushed the export-D89663251 branch from 8518901 to a6e523e Compare January 9, 2026 14:15

bartlomiejbloniarz force-pushed the export-D89663251 branch from a6e523e to 2663e37 Compare January 9, 2026 14:49

bartlomiejbloniarz force-pushed the export-D89663251 branch from 2663e37 to 02c9496 Compare January 9, 2026 14:58

bartlomiejbloniarz force-pushed the export-D89663251 branch from 02c9496 to b090c23 Compare January 9, 2026 15:15

react-native-bot added the Merged This PR has been merged. label Jan 9, 2026

Intermediate commit hash for 1767985429

8f7795d

Differential Revision: D89663244

bartlomiejbloniarz force-pushed the export-D89663251 branch from b090c23 to a57d48a Compare January 12, 2026 11:15

bartlomiejbloniarz force-pushed the export-D89663251 branch from a57d48a to ede988f Compare January 12, 2026 11:39

Move AnimationBackend initialization from Animated #55103

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Move AnimationBackend initialization from Animated #55103

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