Add animatedDeferStartOfTimingAnimations feature flag#57004
Open
zeyap wants to merge 3 commits into
Open
Conversation
Summary: ## Changelog: [Internal] [Changed] - Revisit timing to capture old/new nodes Previously, when `applyViewTransitionName` is called from react reconciler, if there is active viewtransition, we decide it's applying to new node. This was incorrect because `applyViewTransitionName(old)` for next transition can be called when the previous transition is still ongoing. In fact `applyViewTransitionName(old)` is guaranteed to be called before mutationCallback in a transition while `applyViewTransitionName(new)` is inside mutationCallback. So that is a better criteria to separate old and new cases. Given mutationCallback is synchronous on JS thread we can just use a boolean flag to tell the timing. Given this interleaved situation, when we clean up resources (for new/old nodes) of a transition at its end, we should also avoid removing those for a pending transition. Introducing transitionId for this case. Reviewed By: Abbondanzo Differential Revision: D105214322
Summary: ## Changelog: [Internal] [Changed] - Add trace markers in ViewTransitionModule Reviewed By: rubennorte Differential Revision: D105214325
Summary: Add the `animatedDeferStartOfTimingAnimations` JS feature flag (default off). On its own this is a no-op; it gates deferring the start of native-driven timing animations to the first rendered frame, implemented in the following diffs. Includes the regenerated `ReactNativeFeatureFlags.js`. ## Changelog: [Internal] [Changed] - Add animatedDeferStartOfTimingAnimations feature flag Differential Revision: D106825629
|
@zeyap has exported this pull request. If you are a Meta employee, you can view the originating Diff in D106825629. |
zeyap
added a commit
to zeyap/react-native
that referenced
this pull request
May 29, 2026
Summary: Add the `animatedDeferStartOfTimingAnimations` JS feature flag (default off). On its own this is a no-op; it gates deferring the start of native-driven timing animations to the first rendered frame, implemented in the following diffs. Includes the regenerated `ReactNativeFeatureFlags.js`. ## Changelog: [Internal] [Changed] - Add animatedDeferStartOfTimingAnimations feature flag Differential Revision: D106825629
zeyap
added a commit
to zeyap/react-native
that referenced
this pull request
May 29, 2026
Summary: Add the `animatedDeferStartOfTimingAnimations` JS feature flag (default off). On its own this is a no-op; it gates deferring the start of native-driven timing animations to the first rendered frame, implemented in the following diffs. Includes the regenerated `ReactNativeFeatureFlags.js`. ## Changelog: [Internal] [Changed] - Add animatedDeferStartOfTimingAnimations feature flag Differential Revision: D106825629
zeyap
added a commit
to zeyap/react-native
that referenced
this pull request
May 29, 2026
Summary: Add the `animatedDeferStartOfTimingAnimations` JS feature flag (default off). On its own this is a no-op; it gates deferring the start of native-driven timing animations to the first rendered frame, implemented in the following diffs. Includes the regenerated `ReactNativeFeatureFlags.js`. ## Changelog: [Internal] [Changed] - Add animatedDeferStartOfTimingAnimations feature flag Differential Revision: D106825629
zeyap
added a commit
to zeyap/react-native
that referenced
this pull request
May 29, 2026
Summary: Add the `animatedDeferStartOfTimingAnimations` JS feature flag (default off). On its own this is a no-op; it gates deferring the start of native-driven timing animations to the first rendered frame, implemented in the following diffs. Includes the regenerated `ReactNativeFeatureFlags.js`. ## Changelog: [Internal] [Changed] - Add animatedDeferStartOfTimingAnimations feature flag Differential Revision: D106825629
zeyap
added a commit
to zeyap/react-native
that referenced
this pull request
May 29, 2026
Summary: Add the `animatedDeferStartOfTimingAnimations` JS feature flag (default off). On its own this is a no-op; it gates deferring the start of native-driven timing animations to the first rendered frame, implemented in the following diffs. Includes the regenerated `ReactNativeFeatureFlags.js`. ## Changelog: [Internal] [Changed] - Add animatedDeferStartOfTimingAnimations feature flag Differential Revision: D106825629
zeyap
added a commit
to zeyap/react-native
that referenced
this pull request
May 29, 2026
Summary: Add the `animatedDeferStartOfTimingAnimations` JS feature flag (default off). On its own this is a no-op; it gates deferring the start of native-driven timing animations to the first rendered frame, implemented in the following diffs. Includes the regenerated `ReactNativeFeatureFlags.js`. ## Changelog: [Internal] [Changed] - Add animatedDeferStartOfTimingAnimations feature flag Differential Revision: D106825629
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Summary:
Add the
animatedDeferStartOfTimingAnimationsJS feature flag (default off). On its own this is a no-op; it gates deferring the start of native-driven timing animations to the first rendered frame, implemented in the following diffs. Includes the regeneratedReactNativeFeatureFlags.js.Changelog:
[Internal] [Changed] - Add animatedDeferStartOfTimingAnimations feature flag
Differential Revision: D106825629