Feature Flag

packages/shared/ReactFeatureFlags.js

@@ -210,6 +210,9 @@ export const disableIEWorkarounds = true;
 // request for certain browsers.
 export const enableFilterEmptyStringAttributesDOM = true;
 
+// Enable the moveBefore() alternative to insertBefore(). This preserves states of moves.
+export const enableMoveBefore = false;
+
 // Disabled caching behavior of `react/cache` in client runtimes.
 export const disableClientCache = true;
 

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

@@ -55,6 +55,7 @@ export const enableDebugTracing = false;
 export const enableDeferRootSchedulingToMicrotask = true;
 export const enableDO_NOT_USE_disableStrictPassiveEffect = false;
 export const enableFilterEmptyStringAttributesDOM = true;
+export const enableMoveBefore = true;
 export const enableFizzExternalRuntime = true;
 export const enableFlightReadableStream = true;
 export const enableGetInspectorDataForInstanceInProduction = true;

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

@@ -44,6 +44,7 @@ export const enableDeferRootSchedulingToMicrotask = true;
 export const enableDO_NOT_USE_disableStrictPassiveEffect = false;
 export const enableFabricCompleteRootInCommitPhase = false;
 export const enableFilterEmptyStringAttributesDOM = true;
+export const enableMoveBefore = true;
 export const enableFizzExternalRuntime = true;
 export const enableFlightReadableStream = true;
 export const enableGetInspectorDataForInstanceInProduction = false;

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

@@ -45,6 +45,7 @@ export const favorSafetyOverHydrationPerf = true;
 export const enableComponentStackLocations = true;
 export const enableLegacyFBSupport = false;
 export const enableFilterEmptyStringAttributesDOM = true;
+export const enableMoveBefore = false;
 export const enableGetInspectorDataForInstanceInProduction = false;
 export const enableFabricCompleteRootInCommitPhase = false;
 export const enableHiddenSubtreeInsertionEffectCleanup = false;

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

@@ -35,6 +35,7 @@ export const enableDebugTracing = false;
 export const enableDeferRootSchedulingToMicrotask = true;
 export const enableDO_NOT_USE_disableStrictPassiveEffect = false;
 export const enableFilterEmptyStringAttributesDOM = true;
+export const enableMoveBefore = false;
 export const enableFizzExternalRuntime = true;
 export const enableFlightReadableStream = true;
 export const enableGetInspectorDataForInstanceInProduction = false;

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

@@ -47,6 +47,7 @@ export const favorSafetyOverHydrationPerf = true;
 export const enableComponentStackLocations = true;
 export const enableLegacyFBSupport = false;
 export const enableFilterEmptyStringAttributesDOM = true;
+export const enableMoveBefore = false;
 export const enableGetInspectorDataForInstanceInProduction = false;
 export const enableRenderableContext = false;
 export const enableFabricCompleteRootInCommitPhase = false;

packages/shared/forks/ReactFeatureFlags.www.js

@@ -57,6 +57,7 @@ export const enableCPUSuspense = true;
 export const enableUseMemoCacheHook = true;
 export const enableUseEffectEventHook = true;
 export const enableFilterEmptyStringAttributesDOM = true;
+export const enableMoveBefore = false;
 export const enableAsyncActions = true;
 export const disableInputAttributeSyncing = false;
 export const enableLegacyFBSupport = true;