Land enableNonInterruptingNormalPri (#20859)

Author: rickhanlonii

packages/react-reconciler/src/ReactFiberLane.new.js

@@ -36,10 +36,7 @@ export type Lane = number;
 export type LaneMap<T> = Array<T>;
 
 import invariant from 'shared/invariant';
-import {
-  enableCache,
-  enableNonInterruptingNormalPri,
-} from 'shared/ReactFeatureFlags';
+import {enableCache} from 'shared/ReactFeatureFlags';
 
 import {
   ImmediatePriority as ImmediateSchedulerPriority,
@@ -348,8 +345,7 @@ export function getNextLanes(root: FiberRoot, wipLanes: Lanes): Lanes {
       // Default priority updates should not interrupt transition updates. The
       // only difference between default updates and transition updates is that
       // default updates do not support refresh transitions.
-      (enableNonInterruptingNormalPri &&
-        nextLanePriority === DefaultLanePriority &&
+      (nextLanePriority === DefaultLanePriority &&
         wipLanePriority === TransitionPriority)
     ) {
       // Keep working on the existing in-progress tree. Do not interrupt.

packages/react-reconciler/src/ReactFiberLane.old.js

@@ -36,10 +36,7 @@ export type Lane = number;
 export type LaneMap<T> = Array<T>;
 
 import invariant from 'shared/invariant';
-import {
-  enableCache,
-  enableNonInterruptingNormalPri,
-} from 'shared/ReactFeatureFlags';
+import {enableCache} from 'shared/ReactFeatureFlags';
 
 import {
   ImmediatePriority as ImmediateSchedulerPriority,
@@ -348,8 +345,7 @@ export function getNextLanes(root: FiberRoot, wipLanes: Lanes): Lanes {
       // Default priority updates should not interrupt transition updates. The
       // only difference between default updates and transition updates is that
       // default updates do not support refresh transitions.
-      (enableNonInterruptingNormalPri &&
-        nextLanePriority === DefaultLanePriority &&
+      (nextLanePriority === DefaultLanePriority &&
         wipLanePriority === TransitionPriority)
     ) {
       // Keep working on the existing in-progress tree. Do not interrupt.

packages/react-reconciler/src/__tests__/ReactTransition-test.js

@@ -946,33 +946,17 @@ describe('ReactTransition', () => {
       updateNormalPri();
     });
 
-    if (gate(flags => flags.enableNonInterruptingNormalPri)) {
-      expect(Scheduler).toHaveYielded([
-        // Finish transition update.
-        'Normal pri: 0',
-        'Commit',
-
-        // Normal pri update.
-        'Transition pri: 1',
-        'Normal pri: 1',
-        'Commit',
-      ]);
-
-      expect(root).toMatchRenderedOutput('Transition pri: 1, Normal pri: 1');
-    } else {
-      expect(Scheduler).toHaveYielded([
-        // Interrupt! Render normal pri update.
-        'Transition pri: 0',
-        'Normal pri: 1',
-        'Commit',
+    expect(Scheduler).toHaveYielded([
+      // Finish transition update.
+      'Normal pri: 0',
+      'Commit',
 
-        // Restart transition update.
-        'Transition pri: 1',
-        'Normal pri: 1',
-        'Commit',
-      ]);
+      // Normal pri update.
+      'Transition pri: 1',
+      'Normal pri: 1',
+      'Commit',
+    ]);
 
-      expect(root).toMatchRenderedOutput('Transition pri: 1, Normal pri: 1');
-    }
+    expect(root).toMatchRenderedOutput('Transition pri: 1, Normal pri: 1');
   });
 });

packages/shared/ReactFeatureFlags.js

@@ -147,8 +147,6 @@ export const enableRecursiveCommitTraversal = false;
 
 export const disableSchedulerTimeoutInWorkLoop = false;
 
-export const enableNonInterruptingNormalPri = false;
-
 export const enableDiscreteEventMicroTasks = false;
 
 export const enableNativeEventPriorityInference = false;

packages/shared/forks/ReactFeatureFlags.native-fb.js

@@ -57,7 +57,6 @@ export const enableUseRefAccessWarning = false;
 
 export const enableRecursiveCommitTraversal = false;
 export const disableSchedulerTimeoutInWorkLoop = false;
-export const enableNonInterruptingNormalPri = false;
 export const enableDiscreteEventMicroTasks = false;
 export const enableNativeEventPriorityInference = false;
 

packages/shared/forks/ReactFeatureFlags.native-oss.js

@@ -56,7 +56,6 @@ export const enableUseRefAccessWarning = false;
 
 export const enableRecursiveCommitTraversal = false;
 export const disableSchedulerTimeoutInWorkLoop = false;
-export const enableNonInterruptingNormalPri = false;
 export const enableDiscreteEventMicroTasks = false;
 export const enableNativeEventPriorityInference = false;
 

packages/shared/forks/ReactFeatureFlags.test-renderer.js

@@ -56,7 +56,6 @@ export const enableUseRefAccessWarning = false;
 
 export const enableRecursiveCommitTraversal = false;
 export const disableSchedulerTimeoutInWorkLoop = false;
-export const enableNonInterruptingNormalPri = false;
 export const enableDiscreteEventMicroTasks = false;
 export const enableNativeEventPriorityInference = false;
 

packages/shared/forks/ReactFeatureFlags.test-renderer.native.js

@@ -56,7 +56,6 @@ export const enableUseRefAccessWarning = false;
 
 export const enableRecursiveCommitTraversal = false;
 export const disableSchedulerTimeoutInWorkLoop = false;
-export const enableNonInterruptingNormalPri = false;
 export const enableDiscreteEventMicroTasks = false;
 export const enableNativeEventPriorityInference = false;
 

packages/shared/forks/ReactFeatureFlags.test-renderer.www.js

@@ -56,7 +56,6 @@ export const enableUseRefAccessWarning = false;
 
 export const enableRecursiveCommitTraversal = false;
 export const disableSchedulerTimeoutInWorkLoop = false;
-export const enableNonInterruptingNormalPri = false;
 export const enableDiscreteEventMicroTasks = false;
 export const enableNativeEventPriorityInference = false;
 

packages/shared/forks/ReactFeatureFlags.testing.js

@@ -56,7 +56,6 @@ export const enableUseRefAccessWarning = false;
 
 export const enableRecursiveCommitTraversal = false;
 export const disableSchedulerTimeoutInWorkLoop = false;
-export const enableNonInterruptingNormalPri = false;
 export const enableDiscreteEventMicroTasks = false;
 export const enableNativeEventPriorityInference = false;