From 819f58cd0ec740efa6822a8eec153356d2eb54b0 Mon Sep 17 00:00:00 2001
From: tyao1 <tyao1@users.noreply.github.com>
Date: Wed, 8 Nov 2023 00:50:13 +0000
Subject: [PATCH] Enable enableUnifiedSyncLane (#27646)

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## Summary

<!--
Explain the **motivation** for making this change. What existing problem
does the pull request solve?
-->
The flag has been tested internally on WWW, should be good to set to
true for OSS. Added a dynamic flag for fb RN.

## How did you test this change?

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Demonstrate the code is solid. Example: The exact commands you ran and
their output, screenshots / videos if the pull request changes the user
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yarn test

DiffTrain build for commit https://github.com/facebook/react/commit/52d542ad6d410008c495084f511247f43387055f.
---
 .../cjs/ReactTestRenderer-dev.js              | 18 +++-
 .../cjs/ReactTestRenderer-prod.js             | 87 +++++++++--------
 .../cjs/ReactTestRenderer-profiling.js        | 87 +++++++++--------
 .../RKJSModules/vendor/react/cjs/React-dev.js |  2 +-
 .../vendor/react/cjs/React-prod.js            |  2 +-
 .../vendor/react/cjs/React-profiling.js       |  2 +-
 .../Libraries/Renderer/REVISION               |  2 +-
 .../implementations/ReactFabric-dev.fb.js     | 21 ++++-
 .../implementations/ReactFabric-prod.fb.js    | 94 ++++++++++---------
 .../ReactFabric-profiling.fb.js               | 92 ++++++++++--------
 .../ReactNativeRenderer-dev.fb.js             | 21 ++++-
 .../ReactNativeRenderer-prod.fb.js            | 94 ++++++++++---------
 .../ReactNativeRenderer-profiling.fb.js       | 92 ++++++++++--------
 13 files changed, 350 insertions(+), 264 deletions(-)

diff --git a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-dev.js b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-dev.js
index a733392fd1c63..948c57c95196c 100644
--- a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-dev.js
+++ b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-dev.js
@@ -8,7 +8,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<bb5ef5a2f4eb8edaae00d8385d079e76>>
+ * @generated SignedSource<<769546074522c131978074e9337b9413>>
  */
 
 "use strict";
@@ -1078,7 +1078,7 @@ if (__DEV__) {
     var DefaultLane =
       /*                     */
       32;
-    var SyncUpdateLanes = SyncLane;
+    var SyncUpdateLanes = SyncLane | InputContinuousLane | DefaultLane;
     var TransitionHydrationLane =
       /*                */
       64;
@@ -1173,6 +1173,14 @@ if (__DEV__) {
     var nextRetryLane = RetryLane1;
 
     function getHighestPriorityLanes(lanes) {
+      {
+        var pendingSyncLanes = lanes & SyncUpdateLanes;
+
+        if (pendingSyncLanes !== 0) {
+          return pendingSyncLanes;
+        }
+      }
+
       switch (getHighestPriorityLane(lanes)) {
         case SyncHydrationLane:
           return SyncHydrationLane;
@@ -1771,7 +1779,9 @@ if (__DEV__) {
       var renderLane = getHighestPriorityLane(renderLanes);
       var lane;
 
-      {
+      if ((renderLane & SyncUpdateLanes) !== NoLane) {
+        lane = SyncHydrationLane;
+      } else {
         switch (renderLane) {
           case SyncLane:
             lane = SyncHydrationLane;
@@ -25346,7 +25356,7 @@ if (__DEV__) {
       return root;
     }
 
-    var ReactVersion = "18.3.0-canary-2c8a139a5-20231107";
+    var ReactVersion = "18.3.0-canary-52d542ad6-20231107";
 
     // Might add PROFILE later.
 
diff --git a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-prod.js b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-prod.js
index a21c800f3e255..7ead421707992 100644
--- a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-prod.js
+++ b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-prod.js
@@ -8,7 +8,7 @@
  @noflow
  @nolint
  @preventMunge
- @generated SignedSource<<42aaf404bbde7ea71491676ec56cb0e1>>
+ @generated SignedSource<<64fea925e1f2075ccf9b0d7a53d3616f>>
 */
 "use strict";
 var React = require("react"),
@@ -302,6 +302,8 @@ function clz32Fallback(x) {
 var nextTransitionLane = 128,
   nextRetryLane = 4194304;
 function getHighestPriorityLanes(lanes) {
+  var pendingSyncLanes = lanes & 42;
+  if (0 !== pendingSyncLanes) return pendingSyncLanes;
   switch (lanes & -lanes) {
     case 1:
       return 1;
@@ -4357,43 +4359,46 @@ function updateDehydratedSuspenseComponent(
   if (didReceiveUpdate || didSuspend) {
     nextProps = workInProgressRoot;
     if (null !== nextProps) {
-      switch (renderLanes & -renderLanes) {
-        case 2:
-          didSuspend = 1;
-          break;
-        case 8:
-          didSuspend = 4;
-          break;
-        case 32:
-          didSuspend = 16;
-          break;
-        case 128:
-        case 256:
-        case 512:
-        case 1024:
-        case 2048:
-        case 4096:
-        case 8192:
-        case 16384:
-        case 32768:
-        case 65536:
-        case 131072:
-        case 262144:
-        case 524288:
-        case 1048576:
-        case 2097152:
-        case 4194304:
-        case 8388608:
-        case 16777216:
-        case 33554432:
-          didSuspend = 64;
-          break;
-        case 268435456:
-          didSuspend = 134217728;
-          break;
-        default:
-          didSuspend = 0;
-      }
+      didSuspend = renderLanes & -renderLanes;
+      if (0 !== (didSuspend & 42)) didSuspend = 1;
+      else
+        switch (didSuspend) {
+          case 2:
+            didSuspend = 1;
+            break;
+          case 8:
+            didSuspend = 4;
+            break;
+          case 32:
+            didSuspend = 16;
+            break;
+          case 128:
+          case 256:
+          case 512:
+          case 1024:
+          case 2048:
+          case 4096:
+          case 8192:
+          case 16384:
+          case 32768:
+          case 65536:
+          case 131072:
+          case 262144:
+          case 524288:
+          case 1048576:
+          case 2097152:
+          case 4194304:
+          case 8388608:
+          case 16777216:
+          case 33554432:
+            didSuspend = 64;
+            break;
+          case 268435456:
+            didSuspend = 134217728;
+            break;
+          default:
+            didSuspend = 0;
+        }
       didSuspend =
         0 !== (didSuspend & (nextProps.suspendedLanes | renderLanes))
           ? 0
@@ -7717,7 +7722,7 @@ function commitRootImpl(
     0 !== root.tag &&
     flushPassiveEffects();
   remainingLanes = root.pendingLanes;
-  0 !== (lanes & 4194218) && 0 !== (remainingLanes & 2)
+  0 !== (lanes & 4194218) && 0 !== (remainingLanes & 42)
     ? root === rootWithNestedUpdates
       ? nestedUpdateCount++
       : ((nestedUpdateCount = 0), (rootWithNestedUpdates = root))
@@ -9039,7 +9044,7 @@ var devToolsConfig$jscomp$inline_1033 = {
     throw Error("TestRenderer does not support findFiberByHostInstance()");
   },
   bundleType: 0,
-  version: "18.3.0-canary-2c8a139a5-20231107",
+  version: "18.3.0-canary-52d542ad6-20231107",
   rendererPackageName: "react-test-renderer"
 };
 var internals$jscomp$inline_1226 = {
@@ -9070,7 +9075,7 @@ var internals$jscomp$inline_1226 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-canary-2c8a139a5-20231107"
+  reconcilerVersion: "18.3.0-canary-52d542ad6-20231107"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_1227 = __REACT_DEVTOOLS_GLOBAL_HOOK__;
diff --git a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-profiling.js b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-profiling.js
index 13d31e1a2d104..0d90bbb743943 100644
--- a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-profiling.js
+++ b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-profiling.js
@@ -8,7 +8,7 @@
  @noflow
  @nolint
  @preventMunge
- @generated SignedSource<<a6bb3bf359cbeea2e35d544470fb83f6>>
+ @generated SignedSource<<61b6979329b48da7cd49daaed19bd835>>
 */
 "use strict";
 var React = require("react"),
@@ -320,6 +320,8 @@ function clz32Fallback(x) {
 var nextTransitionLane = 128,
   nextRetryLane = 4194304;
 function getHighestPriorityLanes(lanes) {
+  var pendingSyncLanes = lanes & 42;
+  if (0 !== pendingSyncLanes) return pendingSyncLanes;
   switch (lanes & -lanes) {
     case 1:
       return 1;
@@ -4453,43 +4455,46 @@ function updateDehydratedSuspenseComponent(
   if (didReceiveUpdate || didSuspend) {
     nextProps = workInProgressRoot;
     if (null !== nextProps) {
-      switch (renderLanes & -renderLanes) {
-        case 2:
-          didSuspend = 1;
-          break;
-        case 8:
-          didSuspend = 4;
-          break;
-        case 32:
-          didSuspend = 16;
-          break;
-        case 128:
-        case 256:
-        case 512:
-        case 1024:
-        case 2048:
-        case 4096:
-        case 8192:
-        case 16384:
-        case 32768:
-        case 65536:
-        case 131072:
-        case 262144:
-        case 524288:
-        case 1048576:
-        case 2097152:
-        case 4194304:
-        case 8388608:
-        case 16777216:
-        case 33554432:
-          didSuspend = 64;
-          break;
-        case 268435456:
-          didSuspend = 134217728;
-          break;
-        default:
-          didSuspend = 0;
-      }
+      didSuspend = renderLanes & -renderLanes;
+      if (0 !== (didSuspend & 42)) didSuspend = 1;
+      else
+        switch (didSuspend) {
+          case 2:
+            didSuspend = 1;
+            break;
+          case 8:
+            didSuspend = 4;
+            break;
+          case 32:
+            didSuspend = 16;
+            break;
+          case 128:
+          case 256:
+          case 512:
+          case 1024:
+          case 2048:
+          case 4096:
+          case 8192:
+          case 16384:
+          case 32768:
+          case 65536:
+          case 131072:
+          case 262144:
+          case 524288:
+          case 1048576:
+          case 2097152:
+          case 4194304:
+          case 8388608:
+          case 16777216:
+          case 33554432:
+            didSuspend = 64;
+            break;
+          case 268435456:
+            didSuspend = 134217728;
+            break;
+          default:
+            didSuspend = 0;
+        }
       didSuspend =
         0 !== (didSuspend & (nextProps.suspendedLanes | renderLanes))
           ? 0
@@ -8079,7 +8084,7 @@ function commitRootImpl(
     0 !== root.tag &&
     flushPassiveEffects();
   remainingLanes = root.pendingLanes;
-  0 !== (lanes & 4194218) && 0 !== (remainingLanes & 2)
+  0 !== (lanes & 4194218) && 0 !== (remainingLanes & 42)
     ? ((nestedUpdateScheduled = !0),
       root === rootWithNestedUpdates
         ? nestedUpdateCount++
@@ -9465,7 +9470,7 @@ var devToolsConfig$jscomp$inline_1075 = {
     throw Error("TestRenderer does not support findFiberByHostInstance()");
   },
   bundleType: 0,
-  version: "18.3.0-canary-2c8a139a5-20231107",
+  version: "18.3.0-canary-52d542ad6-20231107",
   rendererPackageName: "react-test-renderer"
 };
 var internals$jscomp$inline_1267 = {
@@ -9496,7 +9501,7 @@ var internals$jscomp$inline_1267 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-canary-2c8a139a5-20231107"
+  reconcilerVersion: "18.3.0-canary-52d542ad6-20231107"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_1268 = __REACT_DEVTOOLS_GLOBAL_HOOK__;
diff --git a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-dev.js b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-dev.js
index 328d6b8274d32..3434aaa2615d6 100644
--- a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-dev.js
+++ b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-dev.js
@@ -25,7 +25,7 @@ if (__DEV__) {
     ) {
       __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(new Error());
     }
-    var ReactVersion = "18.3.0-canary-2c8a139a5-20231107";
+    var ReactVersion = "18.3.0-canary-52d542ad6-20231107";
 
     // ATTENTION
     // When adding new symbols to this file,
diff --git a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-prod.js b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-prod.js
index e21bae0b6364d..934184b40697a 100644
--- a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-prod.js
+++ b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-prod.js
@@ -580,4 +580,4 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactCurrentDispatcher.current.useTransition();
 };
-exports.version = "18.3.0-canary-2c8a139a5-20231107";
+exports.version = "18.3.0-canary-52d542ad6-20231107";
diff --git a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-profiling.js b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-profiling.js
index 08c70c04a91de..893c0c2113326 100644
--- a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-profiling.js
+++ b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-profiling.js
@@ -576,7 +576,7 @@ exports.useSyncExternalStore = function (
 exports.useTransition = function () {
   return ReactCurrentDispatcher.current.useTransition();
 };
-exports.version = "18.3.0-canary-2c8a139a5-20231107";
+exports.version = "18.3.0-canary-52d542ad6-20231107";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
   "function" ===
     typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&
diff --git a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/REVISION b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/REVISION
index 7edd11d59be1c..c5d5bcbfa2183 100644
--- a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/REVISION
+++ b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/REVISION
@@ -1 +1 @@
-2c8a139a593e0294c3a6953d74b451bd05fdcfca
+52d542ad6d410008c495084f511247f43387055f
diff --git a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-dev.fb.js b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-dev.fb.js
index b1b0bd0f6b280..ebe41f43104b5 100644
--- a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-dev.fb.js
+++ b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-dev.fb.js
@@ -8,7 +8,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<0c416160e587747e4ce8606a10769cd0>>
+ * @generated SignedSource<<353097a9ab86338df938f96ba3466bc6>>
  */
 
 "use strict";
@@ -3236,6 +3236,7 @@ to return true:wantsResponderID|                            |
     var enableUseRefAccessWarning = dynamicFlags.enableUseRefAccessWarning,
       enableDeferRootSchedulingToMicrotask =
         dynamicFlags.enableDeferRootSchedulingToMicrotask,
+      enableUnifiedSyncLane = dynamicFlags.enableUnifiedSyncLane,
       alwaysThrottleRetries = dynamicFlags.alwaysThrottleRetries,
       useMicrotasksForSchedulingInFabric =
         dynamicFlags.useMicrotasksForSchedulingInFabric,
@@ -4004,7 +4005,9 @@ to return true:wantsResponderID|                            |
     var DefaultLane =
       /*                     */
       32;
-    var SyncUpdateLanes = SyncLane;
+    var SyncUpdateLanes = enableUnifiedSyncLane
+      ? SyncLane | InputContinuousLane | DefaultLane
+      : SyncLane;
     var TransitionHydrationLane =
       /*                */
       64;
@@ -4160,6 +4163,14 @@ to return true:wantsResponderID|                            |
     var nextRetryLane = RetryLane1;
 
     function getHighestPriorityLanes(lanes) {
+      if (enableUnifiedSyncLane) {
+        var pendingSyncLanes = lanes & SyncUpdateLanes;
+
+        if (pendingSyncLanes !== 0) {
+          return pendingSyncLanes;
+        }
+      }
+
       switch (getHighestPriorityLane(lanes)) {
         case SyncHydrationLane:
           return SyncHydrationLane;
@@ -4758,7 +4769,9 @@ to return true:wantsResponderID|                            |
       var renderLane = getHighestPriorityLane(renderLanes);
       var lane;
 
-      {
+      if (enableUnifiedSyncLane && (renderLane & SyncUpdateLanes) !== NoLane) {
+        lane = SyncHydrationLane;
+      } else {
         switch (renderLane) {
           case SyncLane:
             lane = SyncHydrationLane;
@@ -27792,7 +27805,7 @@ to return true:wantsResponderID|                            |
       return root;
     }
 
-    var ReactVersion = "18.3.0-canary-03c611c3";
+    var ReactVersion = "18.3.0-canary-bef2c912";
 
     function createPortal$1(
       children,
diff --git a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-prod.fb.js b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-prod.fb.js
index 2180815bea543..21c86497d4ea0 100644
--- a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-prod.fb.js
+++ b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-prod.fb.js
@@ -8,7 +8,7 @@
  @noflow
  @nolint
  @preventMunge
- @generated SignedSource<<a7259d2629c945fc5eb1f0fefb4e3f39>>
+ @generated SignedSource<<736daa47032f0b417e55ee36b6fcd64f>>
 */
 "use strict";
 require("react-native/Libraries/ReactPrivate/ReactNativePrivateInitializeCore");
@@ -1317,6 +1317,7 @@ function dispatchEvent(target, topLevelType, nativeEvent) {
 var enableUseRefAccessWarning = dynamicFlags.enableUseRefAccessWarning,
   enableDeferRootSchedulingToMicrotask =
     dynamicFlags.enableDeferRootSchedulingToMicrotask,
+  enableUnifiedSyncLane = dynamicFlags.enableUnifiedSyncLane,
   alwaysThrottleRetries = dynamicFlags.alwaysThrottleRetries,
   useMicrotasksForSchedulingInFabric =
     dynamicFlags.useMicrotasksForSchedulingInFabric,
@@ -1353,9 +1354,14 @@ function clz32Fallback(x) {
   x >>>= 0;
   return 0 === x ? 32 : (31 - ((log(x) / LN2) | 0)) | 0;
 }
-var nextTransitionLane = 128,
+var SyncUpdateLanes = enableUnifiedSyncLane ? 42 : 2,
+  nextTransitionLane = 128,
   nextRetryLane = 4194304;
 function getHighestPriorityLanes(lanes) {
+  if (enableUnifiedSyncLane) {
+    var pendingSyncLanes = lanes & SyncUpdateLanes;
+    if (0 !== pendingSyncLanes) return pendingSyncLanes;
+  }
   switch (lanes & -lanes) {
     case 1:
       return 1;
@@ -5435,43 +5441,47 @@ function updateDehydratedSuspenseComponent(
   if (didReceiveUpdate || didSuspend) {
     nextProps = workInProgressRoot;
     if (null !== nextProps) {
-      switch (renderLanes & -renderLanes) {
-        case 2:
-          didSuspend = 1;
-          break;
-        case 8:
-          didSuspend = 4;
-          break;
-        case 32:
-          didSuspend = 16;
-          break;
-        case 128:
-        case 256:
-        case 512:
-        case 1024:
-        case 2048:
-        case 4096:
-        case 8192:
-        case 16384:
-        case 32768:
-        case 65536:
-        case 131072:
-        case 262144:
-        case 524288:
-        case 1048576:
-        case 2097152:
-        case 4194304:
-        case 8388608:
-        case 16777216:
-        case 33554432:
-          didSuspend = 64;
-          break;
-        case 268435456:
-          didSuspend = 134217728;
-          break;
-        default:
-          didSuspend = 0;
-      }
+      didSuspend = renderLanes & -renderLanes;
+      if (enableUnifiedSyncLane && 0 !== (didSuspend & SyncUpdateLanes))
+        didSuspend = 1;
+      else
+        switch (didSuspend) {
+          case 2:
+            didSuspend = 1;
+            break;
+          case 8:
+            didSuspend = 4;
+            break;
+          case 32:
+            didSuspend = 16;
+            break;
+          case 128:
+          case 256:
+          case 512:
+          case 1024:
+          case 2048:
+          case 4096:
+          case 8192:
+          case 16384:
+          case 32768:
+          case 65536:
+          case 131072:
+          case 262144:
+          case 524288:
+          case 1048576:
+          case 2097152:
+          case 4194304:
+          case 8388608:
+          case 16777216:
+          case 33554432:
+            didSuspend = 64;
+            break;
+          case 268435456:
+            didSuspend = 134217728;
+            break;
+          default:
+            didSuspend = 0;
+        }
       didSuspend =
         0 !== (didSuspend & (nextProps.suspendedLanes | renderLanes))
           ? 0
@@ -8415,7 +8425,7 @@ function commitRootImpl(
     0 !== root.tag &&
     flushPassiveEffects();
   remainingLanes = root.pendingLanes;
-  0 !== (transitions & 4194218) && 0 !== (remainingLanes & 2)
+  0 !== (transitions & 4194218) && 0 !== (remainingLanes & SyncUpdateLanes)
     ? root === rootWithNestedUpdates
       ? nestedUpdateCount++
       : ((nestedUpdateCount = 0), (rootWithNestedUpdates = root))
@@ -9535,7 +9545,7 @@ var roots = new Map(),
   devToolsConfig$jscomp$inline_1048 = {
     findFiberByHostInstance: getInstanceFromNode,
     bundleType: 0,
-    version: "18.3.0-canary-63564c82",
+    version: "18.3.0-canary-16d7331f",
     rendererPackageName: "react-native-renderer",
     rendererConfig: {
       getInspectorDataForInstance: getInspectorDataForInstance,
@@ -9578,7 +9588,7 @@ var internals$jscomp$inline_1290 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-canary-63564c82"
+  reconcilerVersion: "18.3.0-canary-16d7331f"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_1291 = __REACT_DEVTOOLS_GLOBAL_HOOK__;
diff --git a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-profiling.fb.js b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-profiling.fb.js
index 12a0368505abb..b3812dfa82e34 100644
--- a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-profiling.fb.js
+++ b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-profiling.fb.js
@@ -8,7 +8,7 @@
  @noflow
  @nolint
  @preventMunge
- @generated SignedSource<<0f7797b47b8b2ddfff6ea9a65887641f>>
+ @generated SignedSource<<9569d52216e41caa6cb3cd4bc81e912e>>
 */
 "use strict";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
@@ -1321,6 +1321,7 @@ function dispatchEvent(target, topLevelType, nativeEvent) {
 var enableUseRefAccessWarning = dynamicFlags.enableUseRefAccessWarning,
   enableDeferRootSchedulingToMicrotask =
     dynamicFlags.enableDeferRootSchedulingToMicrotask,
+  enableUnifiedSyncLane = dynamicFlags.enableUnifiedSyncLane,
   alwaysThrottleRetries = dynamicFlags.alwaysThrottleRetries,
   useMicrotasksForSchedulingInFabric =
     dynamicFlags.useMicrotasksForSchedulingInFabric,
@@ -1429,6 +1430,7 @@ function clz32Fallback(x) {
   x >>>= 0;
   return 0 === x ? 32 : (31 - ((log(x) / LN2) | 0)) | 0;
 }
+var SyncUpdateLanes = enableUnifiedSyncLane ? 42 : 2;
 function getLabelForLane(lane) {
   if (lane & 1) return "SyncHydrationLane";
   if (lane & 2) return "Sync";
@@ -1448,6 +1450,10 @@ function getLabelForLane(lane) {
 var nextTransitionLane = 128,
   nextRetryLane = 4194304;
 function getHighestPriorityLanes(lanes) {
+  if (enableUnifiedSyncLane) {
+    var pendingSyncLanes = lanes & SyncUpdateLanes;
+    if (0 !== pendingSyncLanes) return pendingSyncLanes;
+  }
   switch (lanes & -lanes) {
     case 1:
       return 1;
@@ -5651,43 +5657,47 @@ function updateDehydratedSuspenseComponent(
   if (didReceiveUpdate || didSuspend) {
     nextProps = workInProgressRoot;
     if (null !== nextProps) {
-      switch (renderLanes & -renderLanes) {
-        case 2:
-          didSuspend = 1;
-          break;
-        case 8:
-          didSuspend = 4;
-          break;
-        case 32:
-          didSuspend = 16;
-          break;
-        case 128:
-        case 256:
-        case 512:
-        case 1024:
-        case 2048:
-        case 4096:
-        case 8192:
-        case 16384:
-        case 32768:
-        case 65536:
-        case 131072:
-        case 262144:
-        case 524288:
-        case 1048576:
-        case 2097152:
-        case 4194304:
-        case 8388608:
-        case 16777216:
-        case 33554432:
-          didSuspend = 64;
-          break;
-        case 268435456:
-          didSuspend = 134217728;
-          break;
-        default:
-          didSuspend = 0;
-      }
+      didSuspend = renderLanes & -renderLanes;
+      if (enableUnifiedSyncLane && 0 !== (didSuspend & SyncUpdateLanes))
+        didSuspend = 1;
+      else
+        switch (didSuspend) {
+          case 2:
+            didSuspend = 1;
+            break;
+          case 8:
+            didSuspend = 4;
+            break;
+          case 32:
+            didSuspend = 16;
+            break;
+          case 128:
+          case 256:
+          case 512:
+          case 1024:
+          case 2048:
+          case 4096:
+          case 8192:
+          case 16384:
+          case 32768:
+          case 65536:
+          case 131072:
+          case 262144:
+          case 524288:
+          case 1048576:
+          case 2097152:
+          case 4194304:
+          case 8388608:
+          case 16777216:
+          case 33554432:
+            didSuspend = 64;
+            break;
+          case 268435456:
+            didSuspend = 134217728;
+            break;
+          default:
+            didSuspend = 0;
+        }
       didSuspend =
         0 !== (didSuspend & (nextProps.suspendedLanes | renderLanes))
           ? 0
@@ -9027,7 +9037,7 @@ function commitRootImpl(
     0 !== root.tag &&
     flushPassiveEffects();
   remainingLanes = root.pendingLanes;
-  0 !== (transitions & 4194218) && 0 !== (remainingLanes & 2)
+  0 !== (transitions & 4194218) && 0 !== (remainingLanes & SyncUpdateLanes)
     ? ((nestedUpdateScheduled = !0),
       root === rootWithNestedUpdates
         ? nestedUpdateCount++
@@ -10237,7 +10247,7 @@ var roots = new Map(),
   devToolsConfig$jscomp$inline_1126 = {
     findFiberByHostInstance: getInstanceFromNode,
     bundleType: 0,
-    version: "18.3.0-canary-42042f68",
+    version: "18.3.0-canary-491a84d2",
     rendererPackageName: "react-native-renderer",
     rendererConfig: {
       getInspectorDataForInstance: getInspectorDataForInstance,
@@ -10293,7 +10303,7 @@ var roots = new Map(),
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-canary-42042f68"
+  reconcilerVersion: "18.3.0-canary-491a84d2"
 });
 exports.createPortal = function (children, containerTag) {
   return createPortal$1(
diff --git a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js
index 271aaae16693c..63645acb34851 100644
--- a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js
+++ b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js
@@ -8,7 +8,7 @@
  * @noflow
  * @nolint
  * @preventMunge
- * @generated SignedSource<<caf0dfbed6022ac0f0261ce359e11085>>
+ * @generated SignedSource<<8991b9801f0e6d4eb5dc24aa802bf853>>
  */
 
 "use strict";
@@ -2947,6 +2947,7 @@ to return true:wantsResponderID|                            |
     var enableUseRefAccessWarning = dynamicFlags.enableUseRefAccessWarning,
       enableDeferRootSchedulingToMicrotask =
         dynamicFlags.enableDeferRootSchedulingToMicrotask,
+      enableUnifiedSyncLane = dynamicFlags.enableUnifiedSyncLane,
       alwaysThrottleRetries = dynamicFlags.alwaysThrottleRetries;
     // The rest of the flags are static for better dead code elimination.
     var enableSchedulingProfiler = true;
@@ -4867,7 +4868,9 @@ to return true:wantsResponderID|                            |
     var DefaultLane =
       /*                     */
       32;
-    var SyncUpdateLanes = SyncLane;
+    var SyncUpdateLanes = enableUnifiedSyncLane
+      ? SyncLane | InputContinuousLane | DefaultLane
+      : SyncLane;
     var TransitionHydrationLane =
       /*                */
       64;
@@ -5023,6 +5026,14 @@ to return true:wantsResponderID|                            |
     var nextRetryLane = RetryLane1;
 
     function getHighestPriorityLanes(lanes) {
+      if (enableUnifiedSyncLane) {
+        var pendingSyncLanes = lanes & SyncUpdateLanes;
+
+        if (pendingSyncLanes !== 0) {
+          return pendingSyncLanes;
+        }
+      }
+
       switch (getHighestPriorityLane(lanes)) {
         case SyncHydrationLane:
           return SyncHydrationLane;
@@ -5621,7 +5632,9 @@ to return true:wantsResponderID|                            |
       var renderLane = getHighestPriorityLane(renderLanes);
       var lane;
 
-      {
+      if (enableUnifiedSyncLane && (renderLane & SyncUpdateLanes) !== NoLane) {
+        lane = SyncHydrationLane;
+      } else {
         switch (renderLane) {
           case SyncLane:
             lane = SyncHydrationLane;
@@ -28238,7 +28251,7 @@ to return true:wantsResponderID|                            |
       return root;
     }
 
-    var ReactVersion = "18.3.0-canary-62efe994";
+    var ReactVersion = "18.3.0-canary-600d8797";
 
     function createPortal$1(
       children,
diff --git a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-prod.fb.js b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-prod.fb.js
index df8823b389bf1..8c09cdd1ce941 100644
--- a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-prod.fb.js
+++ b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-prod.fb.js
@@ -8,7 +8,7 @@
  @noflow
  @nolint
  @preventMunge
- @generated SignedSource<<756552b892e56b9b847cea5b678584c0>>
+ @generated SignedSource<<52fc9242d45c207fb10116d9191e64d9>>
 */
 "use strict";
 require("react-native/Libraries/ReactPrivate/ReactNativePrivateInitializeCore");
@@ -1162,6 +1162,7 @@ var ReactSharedInternals =
   enableUseRefAccessWarning = dynamicFlags.enableUseRefAccessWarning,
   enableDeferRootSchedulingToMicrotask =
     dynamicFlags.enableDeferRootSchedulingToMicrotask,
+  enableUnifiedSyncLane = dynamicFlags.enableUnifiedSyncLane,
   alwaysThrottleRetries = dynamicFlags.alwaysThrottleRetries,
   REACT_ELEMENT_TYPE = Symbol.for("react.element"),
   REACT_PORTAL_TYPE = Symbol.for("react.portal"),
@@ -1724,9 +1725,14 @@ function clz32Fallback(x) {
   x >>>= 0;
   return 0 === x ? 32 : (31 - ((log(x) / LN2) | 0)) | 0;
 }
-var nextTransitionLane = 128,
+var SyncUpdateLanes = enableUnifiedSyncLane ? 42 : 2,
+  nextTransitionLane = 128,
   nextRetryLane = 4194304;
 function getHighestPriorityLanes(lanes) {
+  if (enableUnifiedSyncLane) {
+    var pendingSyncLanes = lanes & SyncUpdateLanes;
+    if (0 !== pendingSyncLanes) return pendingSyncLanes;
+  }
   switch (lanes & -lanes) {
     case 1:
       return 1;
@@ -5501,43 +5507,47 @@ function updateDehydratedSuspenseComponent(
   if (didReceiveUpdate || didSuspend) {
     nextProps = workInProgressRoot;
     if (null !== nextProps) {
-      switch (renderLanes & -renderLanes) {
-        case 2:
-          didSuspend = 1;
-          break;
-        case 8:
-          didSuspend = 4;
-          break;
-        case 32:
-          didSuspend = 16;
-          break;
-        case 128:
-        case 256:
-        case 512:
-        case 1024:
-        case 2048:
-        case 4096:
-        case 8192:
-        case 16384:
-        case 32768:
-        case 65536:
-        case 131072:
-        case 262144:
-        case 524288:
-        case 1048576:
-        case 2097152:
-        case 4194304:
-        case 8388608:
-        case 16777216:
-        case 33554432:
-          didSuspend = 64;
-          break;
-        case 268435456:
-          didSuspend = 134217728;
-          break;
-        default:
-          didSuspend = 0;
-      }
+      didSuspend = renderLanes & -renderLanes;
+      if (enableUnifiedSyncLane && 0 !== (didSuspend & SyncUpdateLanes))
+        didSuspend = 1;
+      else
+        switch (didSuspend) {
+          case 2:
+            didSuspend = 1;
+            break;
+          case 8:
+            didSuspend = 4;
+            break;
+          case 32:
+            didSuspend = 16;
+            break;
+          case 128:
+          case 256:
+          case 512:
+          case 1024:
+          case 2048:
+          case 4096:
+          case 8192:
+          case 16384:
+          case 32768:
+          case 65536:
+          case 131072:
+          case 262144:
+          case 524288:
+          case 1048576:
+          case 2097152:
+          case 4194304:
+          case 8388608:
+          case 16777216:
+          case 33554432:
+            didSuspend = 64;
+            break;
+          case 268435456:
+            didSuspend = 134217728;
+            break;
+          default:
+            didSuspend = 0;
+        }
       didSuspend =
         0 !== (didSuspend & (nextProps.suspendedLanes | renderLanes))
           ? 0
@@ -8626,7 +8636,7 @@ function commitRootImpl(
     0 !== root.tag &&
     flushPassiveEffects();
   remainingLanes = root.pendingLanes;
-  0 !== (transitions & 4194218) && 0 !== (remainingLanes & 2)
+  0 !== (transitions & 4194218) && 0 !== (remainingLanes & SyncUpdateLanes)
     ? root === rootWithNestedUpdates
       ? nestedUpdateCount++
       : ((nestedUpdateCount = 0), (rootWithNestedUpdates = root))
@@ -9753,7 +9763,7 @@ var roots = new Map(),
   devToolsConfig$jscomp$inline_1111 = {
     findFiberByHostInstance: getInstanceFromTag,
     bundleType: 0,
-    version: "18.3.0-canary-1ca90b81",
+    version: "18.3.0-canary-62062aef",
     rendererPackageName: "react-native-renderer",
     rendererConfig: {
       getInspectorDataForInstance: getInspectorDataForInstance,
@@ -9796,7 +9806,7 @@ var internals$jscomp$inline_1367 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-canary-1ca90b81"
+  reconcilerVersion: "18.3.0-canary-62062aef"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_1368 = __REACT_DEVTOOLS_GLOBAL_HOOK__;
diff --git a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-profiling.fb.js b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-profiling.fb.js
index e40bb25692c39..1ea84f86da1f7 100644
--- a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-profiling.fb.js
+++ b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-profiling.fb.js
@@ -8,7 +8,7 @@
  @noflow
  @nolint
  @preventMunge
- @generated SignedSource<<8168b1ab1f69cb9572ec780bb8224b09>>
+ @generated SignedSource<<374307ecedc6420e30fb133c4ca89a82>>
 */
 "use strict";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
@@ -1166,6 +1166,7 @@ var ReactSharedInternals =
   enableUseRefAccessWarning = dynamicFlags.enableUseRefAccessWarning,
   enableDeferRootSchedulingToMicrotask =
     dynamicFlags.enableDeferRootSchedulingToMicrotask,
+  enableUnifiedSyncLane = dynamicFlags.enableUnifiedSyncLane,
   alwaysThrottleRetries = dynamicFlags.alwaysThrottleRetries,
   REACT_ELEMENT_TYPE = Symbol.for("react.element"),
   REACT_PORTAL_TYPE = Symbol.for("react.portal"),
@@ -1800,6 +1801,7 @@ function clz32Fallback(x) {
   x >>>= 0;
   return 0 === x ? 32 : (31 - ((log(x) / LN2) | 0)) | 0;
 }
+var SyncUpdateLanes = enableUnifiedSyncLane ? 42 : 2;
 function getLabelForLane(lane) {
   if (lane & 1) return "SyncHydrationLane";
   if (lane & 2) return "Sync";
@@ -1819,6 +1821,10 @@ function getLabelForLane(lane) {
 var nextTransitionLane = 128,
   nextRetryLane = 4194304;
 function getHighestPriorityLanes(lanes) {
+  if (enableUnifiedSyncLane) {
+    var pendingSyncLanes = lanes & SyncUpdateLanes;
+    if (0 !== pendingSyncLanes) return pendingSyncLanes;
+  }
   switch (lanes & -lanes) {
     case 1:
       return 1;
@@ -5717,43 +5723,47 @@ function updateDehydratedSuspenseComponent(
   if (didReceiveUpdate || didSuspend) {
     nextProps = workInProgressRoot;
     if (null !== nextProps) {
-      switch (renderLanes & -renderLanes) {
-        case 2:
-          didSuspend = 1;
-          break;
-        case 8:
-          didSuspend = 4;
-          break;
-        case 32:
-          didSuspend = 16;
-          break;
-        case 128:
-        case 256:
-        case 512:
-        case 1024:
-        case 2048:
-        case 4096:
-        case 8192:
-        case 16384:
-        case 32768:
-        case 65536:
-        case 131072:
-        case 262144:
-        case 524288:
-        case 1048576:
-        case 2097152:
-        case 4194304:
-        case 8388608:
-        case 16777216:
-        case 33554432:
-          didSuspend = 64;
-          break;
-        case 268435456:
-          didSuspend = 134217728;
-          break;
-        default:
-          didSuspend = 0;
-      }
+      didSuspend = renderLanes & -renderLanes;
+      if (enableUnifiedSyncLane && 0 !== (didSuspend & SyncUpdateLanes))
+        didSuspend = 1;
+      else
+        switch (didSuspend) {
+          case 2:
+            didSuspend = 1;
+            break;
+          case 8:
+            didSuspend = 4;
+            break;
+          case 32:
+            didSuspend = 16;
+            break;
+          case 128:
+          case 256:
+          case 512:
+          case 1024:
+          case 2048:
+          case 4096:
+          case 8192:
+          case 16384:
+          case 32768:
+          case 65536:
+          case 131072:
+          case 262144:
+          case 524288:
+          case 1048576:
+          case 2097152:
+          case 4194304:
+          case 8388608:
+          case 16777216:
+          case 33554432:
+            didSuspend = 64;
+            break;
+          case 268435456:
+            didSuspend = 134217728;
+            break;
+          default:
+            didSuspend = 0;
+        }
       didSuspend =
         0 !== (didSuspend & (nextProps.suspendedLanes | renderLanes))
           ? 0
@@ -9238,7 +9248,7 @@ function commitRootImpl(
     0 !== root.tag &&
     flushPassiveEffects();
   remainingLanes = root.pendingLanes;
-  0 !== (transitions & 4194218) && 0 !== (remainingLanes & 2)
+  0 !== (transitions & 4194218) && 0 !== (remainingLanes & SyncUpdateLanes)
     ? ((nestedUpdateScheduled = !0),
       root === rootWithNestedUpdates
         ? nestedUpdateCount++
@@ -10455,7 +10465,7 @@ var roots = new Map(),
   devToolsConfig$jscomp$inline_1189 = {
     findFiberByHostInstance: getInstanceFromTag,
     bundleType: 0,
-    version: "18.3.0-canary-918fff52",
+    version: "18.3.0-canary-e75e0b3e",
     rendererPackageName: "react-native-renderer",
     rendererConfig: {
       getInspectorDataForInstance: getInspectorDataForInstance,
@@ -10511,7 +10521,7 @@ var roots = new Map(),
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-canary-918fff52"
+  reconcilerVersion: "18.3.0-canary-e75e0b3e"
 });
 exports.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED = {
   computeComponentStackForErrorReporting: function (reactTag) {