Turn on RN flags, make www dynamic

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

@@ -10,7 +10,6 @@
 import typeof * as FeatureFlagsType from 'shared/ReactFeatureFlags';
 import typeof * as ExportsType from './ReactFeatureFlags.native-fb';
 
-// NOTE: There are no flags, currently. Uncomment the stuff below if we add one.
 // Re-export dynamic flags from the internal module. Intentionally using *
 // because this import is compiled to a `require` call.
 import * as dynamicFlags from 'ReactNativeInternalFeatureFlags';
@@ -86,7 +85,7 @@ export const enableTransitionTracing = false;
 
 export const enableFloat = true;
 
-export const useModernStrictMode = false;
+export const useModernStrictMode = true;
 export const enableDO_NOT_USE_disableStrictPassiveEffect = false;
 export const enableFizzExternalRuntime = false;
 

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

@@ -70,7 +70,7 @@ export const enableTransitionTracing = false;
 
 export const enableFloat = true;
 
-export const useModernStrictMode = false;
+export const useModernStrictMode = true;
 export const enableDO_NOT_USE_disableStrictPassiveEffect = false;
 export const enableDeferRootSchedulingToMicrotask = true;
 

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

@@ -72,7 +72,7 @@ export const enableTransitionTracing = false;
 
 export const enableFloat = true;
 
-export const useModernStrictMode = false;
+export const useModernStrictMode = true;
 export const enableDO_NOT_USE_disableStrictPassiveEffect = false;
 export const enableFizzExternalRuntime = false;
 export const enableDeferRootSchedulingToMicrotask = true;

packages/shared/forks/ReactFeatureFlags.www-dynamic.js

@@ -43,6 +43,8 @@ export const enableDebugTracing = __EXPERIMENTAL__;
 
 export const enableSchedulingProfiler = __VARIANT__;
 
+export const useModernStrictMode = __VARIANT__;
+
 // These are already tested in both modes using the build type dimension,
 // so we don't need to use __VARIANT__ to get extra coverage.
 export const replayFailedUnitOfWorkWithInvokeGuardedCallback = __DEV__;

packages/shared/forks/ReactFeatureFlags.www.js

@@ -102,7 +102,7 @@ export const allowConcurrentByDefault = true;
 export const consoleManagedByDevToolsDuringStrictMode = true;
 export const enableServerContext = false;
 
-export const useModernStrictMode = false;
+export const useModernStrictMode = true;
 export const enableFizzExternalRuntime = true;
 
 export const forceConcurrentByDefaultForTesting = false;