Fix uSES hydration in strict mode (#26791)

Previously, we'd call and use getSnapshot on the second render resulting
in `Warning: Text content did not match. Server: "Nay!" Client: "Yay!"`
and then `Error: Text content does not match server-rendered HTML.`.

Fixes #26095. Closes #26113. Closes #25650.

---------

Co-authored-by: eps1lon <silbermann.sebastian@gmail.com>

DiffTrain build for [4cd7065665](https://github.com/facebook/react/commit/4cd7065665ea2cf33c306265c8d817904bb401ca)

compiled/facebook-www/REVISION

@@ -1 +1 @@
-df12d7eac40c87bd5fdde0aa5a739bce9e7dce27
+4cd7065665ea2cf33c306265c8d817904bb401ca

compiled/facebook-www/React-dev.modern.js

@@ -27,7 +27,7 @@ if (
 }
           "use strict";
 
-var ReactVersion = "18.3.0-www-modern-bc9d666a";
+var ReactVersion = "18.3.0-www-modern-6995898a";
 
 // ATTENTION
 // When adding new symbols to this file,

compiled/facebook-www/ReactART-dev.classic.js

@@ -69,7 +69,7 @@ function _assertThisInitialized(self) {
   return self;
 }
 
-var ReactVersion = "18.3.0-www-classic-e1e0fe51";
+var ReactVersion = "18.3.0-www-classic-d297891e";
 
 var LegacyRoot = 0;
 var ConcurrentRoot = 1;
@@ -9250,8 +9250,6 @@ function mountSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   // clean-up function, and we track the deps correctly, we can call pushEffect
   // directly, without storing any additional state. For the same reason, we
   // don't need to set a static flag, either.
-  // TODO: We can move this to the passive phase once we add a pre-commit
-  // consistency check. See the next comment.
 
   fiber.flags |= Passive$1;
   pushEffect(
@@ -9269,18 +9267,22 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   // normal rules of React, and only works because store updates are
   // always synchronous.
 
-  var nextSnapshot = getSnapshot();
+  var nextSnapshot;
 
   {
-    if (!didWarnUncachedGetSnapshot) {
-      var cachedSnapshot = getSnapshot();
+    nextSnapshot = getSnapshot();
 
-      if (!objectIs(nextSnapshot, cachedSnapshot)) {
-        error(
-          "The result of getSnapshot should be cached to avoid an infinite loop"
-        );
+    {
+      if (!didWarnUncachedGetSnapshot) {
+        var cachedSnapshot = getSnapshot();
 
-        didWarnUncachedGetSnapshot = true;
+        if (!objectIs(nextSnapshot, cachedSnapshot)) {
+          error(
+            "The result of getSnapshot should be cached to avoid an infinite loop"
+          );
+
+          didWarnUncachedGetSnapshot = true;
+        }
       }
     }
   }
@@ -9303,7 +9305,7 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
 
   if (
     inst.getSnapshot !== getSnapshot ||
-    snapshotChanged || // Check if the susbcribe function changed. We can save some memory by
+    snapshotChanged || // Check if the subscribe function changed. We can save some memory by
     // checking whether we scheduled a subscription effect above.
     (workInProgressHook !== null &&
       workInProgressHook.memoizedState.tag & HasEffect)
@@ -9645,7 +9647,8 @@ function updateEffectImpl(fiberFlags, hookFlags, create, deps) {
   var hook = updateWorkInProgressHook();
   var nextDeps = deps === undefined ? null : deps;
   var effect = hook.memoizedState;
-  var inst = effect.inst; // currentHook is null when rerendering after a render phase state update.
+  var inst = effect.inst; // currentHook is null on initial mount when rerendering after a render phase
+  // state update or for strict mode.
 
   if (currentHook !== null) {
     if (nextDeps !== null) {

compiled/facebook-www/ReactART-dev.modern.js

@@ -69,7 +69,7 @@ function _assertThisInitialized(self) {
   return self;
 }
 
-var ReactVersion = "18.3.0-www-modern-f0df93d6";
+var ReactVersion = "18.3.0-www-modern-2f2a7948";
 
 var LegacyRoot = 0;
 var ConcurrentRoot = 1;
@@ -9006,8 +9006,6 @@ function mountSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   // clean-up function, and we track the deps correctly, we can call pushEffect
   // directly, without storing any additional state. For the same reason, we
   // don't need to set a static flag, either.
-  // TODO: We can move this to the passive phase once we add a pre-commit
-  // consistency check. See the next comment.
 
   fiber.flags |= Passive$1;
   pushEffect(
@@ -9025,18 +9023,22 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   // normal rules of React, and only works because store updates are
   // always synchronous.
 
-  var nextSnapshot = getSnapshot();
+  var nextSnapshot;
 
   {
-    if (!didWarnUncachedGetSnapshot) {
-      var cachedSnapshot = getSnapshot();
+    nextSnapshot = getSnapshot();
 
-      if (!objectIs(nextSnapshot, cachedSnapshot)) {
-        error(
-          "The result of getSnapshot should be cached to avoid an infinite loop"
-        );
+    {
+      if (!didWarnUncachedGetSnapshot) {
+        var cachedSnapshot = getSnapshot();
 
-        didWarnUncachedGetSnapshot = true;
+        if (!objectIs(nextSnapshot, cachedSnapshot)) {
+          error(
+            "The result of getSnapshot should be cached to avoid an infinite loop"
+          );
+
+          didWarnUncachedGetSnapshot = true;
+        }
       }
     }
   }
@@ -9059,7 +9061,7 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
 
   if (
     inst.getSnapshot !== getSnapshot ||
-    snapshotChanged || // Check if the susbcribe function changed. We can save some memory by
+    snapshotChanged || // Check if the subscribe function changed. We can save some memory by
     // checking whether we scheduled a subscription effect above.
     (workInProgressHook !== null &&
       workInProgressHook.memoizedState.tag & HasEffect)
@@ -9401,7 +9403,8 @@ function updateEffectImpl(fiberFlags, hookFlags, create, deps) {
   var hook = updateWorkInProgressHook();
   var nextDeps = deps === undefined ? null : deps;
   var effect = hook.memoizedState;
-  var inst = effect.inst; // currentHook is null when rerendering after a render phase state update.
+  var inst = effect.inst; // currentHook is null on initial mount when rerendering after a render phase
+  // state update or for strict mode.
 
   if (currentHook !== null) {
     if (nextDeps !== null) {

compiled/facebook-www/ReactART-prod.classic.js

@@ -2971,12 +2971,12 @@ function updateMutableSource(source, getSnapshot, subscribe) {
 }
 function updateSyncExternalStore(subscribe, getSnapshot) {
   var fiber = currentlyRenderingFiber$1,
-    hook = updateWorkInProgressHook(),
-    nextSnapshot = getSnapshot(),
-    snapshotChanged = !objectIs(
-      (currentHook || hook).memoizedState,
-      nextSnapshot
-    );
+    hook = updateWorkInProgressHook();
+  var nextSnapshot = getSnapshot();
+  var snapshotChanged = !objectIs(
+    (currentHook || hook).memoizedState,
+    nextSnapshot
+  );
   snapshotChanged &&
     ((hook.memoizedState = nextSnapshot), (didReceiveUpdate = !0));
   hook = hook.queue;
@@ -10193,7 +10193,7 @@ var slice = Array.prototype.slice,
       return null;
     },
     bundleType: 0,
-    version: "18.3.0-www-classic-b2a7bab7",
+    version: "18.3.0-www-classic-06adf47d",
     rendererPackageName: "react-art"
   };
 var internals$jscomp$inline_1325 = {
@@ -10224,7 +10224,7 @@ var internals$jscomp$inline_1325 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-www-classic-b2a7bab7"
+  reconcilerVersion: "18.3.0-www-classic-06adf47d"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_1326 = __REACT_DEVTOOLS_GLOBAL_HOOK__;

compiled/facebook-www/ReactART-prod.modern.js

@@ -2777,12 +2777,12 @@ function updateMutableSource(source, getSnapshot, subscribe) {
 }
 function updateSyncExternalStore(subscribe, getSnapshot) {
   var fiber = currentlyRenderingFiber$1,
-    hook = updateWorkInProgressHook(),
-    nextSnapshot = getSnapshot(),
-    snapshotChanged = !objectIs(
-      (currentHook || hook).memoizedState,
-      nextSnapshot
-    );
+    hook = updateWorkInProgressHook();
+  var nextSnapshot = getSnapshot();
+  var snapshotChanged = !objectIs(
+    (currentHook || hook).memoizedState,
+    nextSnapshot
+  );
   snapshotChanged &&
     ((hook.memoizedState = nextSnapshot), (didReceiveUpdate = !0));
   hook = hook.queue;
@@ -9858,7 +9858,7 @@ var slice = Array.prototype.slice,
       return null;
     },
     bundleType: 0,
-    version: "18.3.0-www-modern-50ab1d1d",
+    version: "18.3.0-www-modern-899090e3",
     rendererPackageName: "react-art"
   };
 var internals$jscomp$inline_1305 = {
@@ -9889,7 +9889,7 @@ var internals$jscomp$inline_1305 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-www-modern-50ab1d1d"
+  reconcilerVersion: "18.3.0-www-modern-899090e3"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_1306 = __REACT_DEVTOOLS_GLOBAL_HOOK__;

compiled/facebook-www/ReactDOM-dev.classic.js

@@ -13799,8 +13799,6 @@ function mountSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   // clean-up function, and we track the deps correctly, we can call pushEffect
   // directly, without storing any additional state. For the same reason, we
   // don't need to set a static flag, either.
-  // TODO: We can move this to the passive phase once we add a pre-commit
-  // consistency check. See the next comment.
 
   fiber.flags |= Passive$1;
   pushEffect(
@@ -13818,18 +13816,33 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   // normal rules of React, and only works because store updates are
   // always synchronous.
 
-  var nextSnapshot = getSnapshot();
+  var nextSnapshot;
+  var isHydrating = getIsHydrating();
 
-  {
-    if (!didWarnUncachedGetSnapshot) {
-      var cachedSnapshot = getSnapshot();
+  if (isHydrating) {
+    // Needed for strict mode double render
+    if (getServerSnapshot === undefined) {
+      throw new Error(
+        "Missing getServerSnapshot, which is required for " +
+          "server-rendered content. Will revert to client rendering."
+      );
+    }
 
-      if (!objectIs(nextSnapshot, cachedSnapshot)) {
-        error(
-          "The result of getSnapshot should be cached to avoid an infinite loop"
-        );
+    nextSnapshot = getServerSnapshot();
+  } else {
+    nextSnapshot = getSnapshot();
 
-        didWarnUncachedGetSnapshot = true;
+    {
+      if (!didWarnUncachedGetSnapshot) {
+        var cachedSnapshot = getSnapshot();
+
+        if (!objectIs(nextSnapshot, cachedSnapshot)) {
+          error(
+            "The result of getSnapshot should be cached to avoid an infinite loop"
+          );
+
+          didWarnUncachedGetSnapshot = true;
+        }
       }
     }
   }
@@ -13852,7 +13865,7 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
 
   if (
     inst.getSnapshot !== getSnapshot ||
-    snapshotChanged || // Check if the susbcribe function changed. We can save some memory by
+    snapshotChanged || // Check if the subscribe function changed. We can save some memory by
     // checking whether we scheduled a subscription effect above.
     (workInProgressHook !== null &&
       workInProgressHook.memoizedState.tag & HasEffect)
@@ -13875,7 +13888,7 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
       );
     }
 
-    if (!includesBlockingLane(root, renderLanes$1)) {
+    if (!isHydrating && !includesBlockingLane(root, renderLanes$1)) {
       pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot);
     }
   }
@@ -14194,7 +14207,8 @@ function updateEffectImpl(fiberFlags, hookFlags, create, deps) {
   var hook = updateWorkInProgressHook();
   var nextDeps = deps === undefined ? null : deps;
   var effect = hook.memoizedState;
-  var inst = effect.inst; // currentHook is null when rerendering after a render phase state update.
+  var inst = effect.inst; // currentHook is null on initial mount when rerendering after a render phase
+  // state update or for strict mode.
 
   if (currentHook !== null) {
     if (nextDeps !== null) {
@@ -15443,7 +15457,7 @@ var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
     useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) {
       currentHookNameInDev = "useSyncExternalStore";
       updateHookTypesDev();
-      return updateSyncExternalStore(subscribe, getSnapshot);
+      return updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
     },
     useId: function () {
       currentHookNameInDev = "useId";
@@ -15587,7 +15601,7 @@ var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
     useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) {
       currentHookNameInDev = "useSyncExternalStore";
       updateHookTypesDev();
-      return updateSyncExternalStore(subscribe, getSnapshot);
+      return updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
     },
     useId: function () {
       currentHookNameInDev = "useId";
@@ -15918,7 +15932,7 @@ var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
       currentHookNameInDev = "useSyncExternalStore";
       warnInvalidHookAccess();
       updateHookTypesDev();
-      return updateSyncExternalStore(subscribe, getSnapshot);
+      return updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
     },
     useId: function () {
       currentHookNameInDev = "useId";
@@ -16085,7 +16099,7 @@ var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
       currentHookNameInDev = "useSyncExternalStore";
       warnInvalidHookAccess();
       updateHookTypesDev();
-      return updateSyncExternalStore(subscribe, getSnapshot);
+      return updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
     },
     useId: function () {
       currentHookNameInDev = "useId";
@@ -34168,7 +34182,7 @@ function createFiberRoot(
   return root;
 }
 
-var ReactVersion = "18.3.0-www-classic-b6d18d0e";
+var ReactVersion = "18.3.0-www-classic-340ebf62";
 
 function createPortal$1(
   children,

compiled/facebook-www/ReactDOM-dev.modern.js

@@ -13740,8 +13740,6 @@ function mountSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   // clean-up function, and we track the deps correctly, we can call pushEffect
   // directly, without storing any additional state. For the same reason, we
   // don't need to set a static flag, either.
-  // TODO: We can move this to the passive phase once we add a pre-commit
-  // consistency check. See the next comment.
 
   fiber.flags |= Passive$1;
   pushEffect(
@@ -13759,18 +13757,33 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   // normal rules of React, and only works because store updates are
   // always synchronous.
 
-  var nextSnapshot = getSnapshot();
+  var nextSnapshot;
+  var isHydrating = getIsHydrating();
 
-  {
-    if (!didWarnUncachedGetSnapshot) {
-      var cachedSnapshot = getSnapshot();
+  if (isHydrating) {
+    // Needed for strict mode double render
+    if (getServerSnapshot === undefined) {
+      throw new Error(
+        "Missing getServerSnapshot, which is required for " +
+          "server-rendered content. Will revert to client rendering."
+      );
+    }
 
-      if (!objectIs(nextSnapshot, cachedSnapshot)) {
-        error(
-          "The result of getSnapshot should be cached to avoid an infinite loop"
-        );
+    nextSnapshot = getServerSnapshot();
+  } else {
+    nextSnapshot = getSnapshot();
 
-        didWarnUncachedGetSnapshot = true;
+    {
+      if (!didWarnUncachedGetSnapshot) {
+        var cachedSnapshot = getSnapshot();
+
+        if (!objectIs(nextSnapshot, cachedSnapshot)) {
+          error(
+            "The result of getSnapshot should be cached to avoid an infinite loop"
+          );
+
+          didWarnUncachedGetSnapshot = true;
+        }
       }
     }
   }
@@ -13793,7 +13806,7 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
 
   if (
     inst.getSnapshot !== getSnapshot ||
-    snapshotChanged || // Check if the susbcribe function changed. We can save some memory by
+    snapshotChanged || // Check if the subscribe function changed. We can save some memory by
     // checking whether we scheduled a subscription effect above.
     (workInProgressHook !== null &&
       workInProgressHook.memoizedState.tag & HasEffect)
@@ -13816,7 +13829,7 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
       );
     }
 
-    if (!includesBlockingLane(root, renderLanes$1)) {
+    if (!isHydrating && !includesBlockingLane(root, renderLanes$1)) {
       pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot);
     }
   }
@@ -14135,7 +14148,8 @@ function updateEffectImpl(fiberFlags, hookFlags, create, deps) {
   var hook = updateWorkInProgressHook();
   var nextDeps = deps === undefined ? null : deps;
   var effect = hook.memoizedState;
-  var inst = effect.inst; // currentHook is null when rerendering after a render phase state update.
+  var inst = effect.inst; // currentHook is null on initial mount when rerendering after a render phase
+  // state update or for strict mode.
 
   if (currentHook !== null) {
     if (nextDeps !== null) {
@@ -15384,7 +15398,7 @@ var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
     useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) {
       currentHookNameInDev = "useSyncExternalStore";
       updateHookTypesDev();
-      return updateSyncExternalStore(subscribe, getSnapshot);
+      return updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
     },
     useId: function () {
       currentHookNameInDev = "useId";
@@ -15528,7 +15542,7 @@ var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
     useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) {
       currentHookNameInDev = "useSyncExternalStore";
       updateHookTypesDev();
-      return updateSyncExternalStore(subscribe, getSnapshot);
+      return updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
     },
     useId: function () {
       currentHookNameInDev = "useId";
@@ -15859,7 +15873,7 @@ var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
       currentHookNameInDev = "useSyncExternalStore";
       warnInvalidHookAccess();
       updateHookTypesDev();
-      return updateSyncExternalStore(subscribe, getSnapshot);
+      return updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
     },
     useId: function () {
       currentHookNameInDev = "useId";
@@ -16026,7 +16040,7 @@ var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
       currentHookNameInDev = "useSyncExternalStore";
       warnInvalidHookAccess();
       updateHookTypesDev();
-      return updateSyncExternalStore(subscribe, getSnapshot);
+      return updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
     },
     useId: function () {
       currentHookNameInDev = "useId";
@@ -34013,7 +34027,7 @@ function createFiberRoot(
   return root;
 }
 
-var ReactVersion = "18.3.0-www-modern-50ab1d1d";
+var ReactVersion = "18.3.0-www-modern-899090e3";
 
 function createPortal$1(
   children,

compiled/facebook-www/ReactDOM-prod.classic.js

@@ -3772,16 +3772,20 @@ function updateMutableSource(source, getSnapshot, subscribe) {
   var hook = updateWorkInProgressHook();
   return useMutableSource(hook, source, getSnapshot, subscribe);
 }
-function updateSyncExternalStore(subscribe, getSnapshot) {
+function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   var fiber = currentlyRenderingFiber$1,
     hook = updateWorkInProgressHook(),
-    nextSnapshot = getSnapshot(),
-    snapshotChanged = !objectIs(
-      (currentHook || hook).memoizedState,
-      nextSnapshot
-    );
+    isHydrating$jscomp$0 = isHydrating;
+  if (isHydrating$jscomp$0) {
+    if (void 0 === getServerSnapshot) throw Error(formatProdErrorMessage(407));
+    getServerSnapshot = getServerSnapshot();
+  } else getServerSnapshot = getSnapshot();
+  var snapshotChanged = !objectIs(
+    (currentHook || hook).memoizedState,
+    getServerSnapshot
+  );
   snapshotChanged &&
-    ((hook.memoizedState = nextSnapshot), (didReceiveUpdate = !0));
+    ((hook.memoizedState = getServerSnapshot), (didReceiveUpdate = !0));
   hook = hook.queue;
   updateEffect(subscribeToStore.bind(null, fiber, hook, subscribe), [
     subscribe
@@ -3794,16 +3798,23 @@ function updateSyncExternalStore(subscribe, getSnapshot) {
     fiber.flags |= 2048;
     pushEffect(
       9,
-      updateStoreInstance.bind(null, fiber, hook, nextSnapshot, getSnapshot),
+      updateStoreInstance.bind(
+        null,
+        fiber,
+        hook,
+        getServerSnapshot,
+        getSnapshot
+      ),
       { destroy: void 0 },
       null
     );
     subscribe = workInProgressRoot;
     if (null === subscribe) throw Error(formatProdErrorMessage(349));
-    includesBlockingLane(subscribe, renderLanes$1) ||
-      pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot);
+    isHydrating$jscomp$0 ||
+      includesBlockingLane(subscribe, renderLanes$1) ||
+      pushStoreConsistencyCheck(fiber, getSnapshot, getServerSnapshot);
   }
-  return nextSnapshot;
+  return getServerSnapshot;
 }
 function pushStoreConsistencyCheck(fiber, getSnapshot, renderedSnapshot) {
   fiber.flags |= 16384;
@@ -16642,7 +16653,7 @@ Internals.Events = [
 var devToolsConfig$jscomp$inline_1829 = {
   findFiberByHostInstance: getClosestInstanceFromNode,
   bundleType: 0,
-  version: "18.3.0-www-classic-fbb135ff",
+  version: "18.3.0-www-classic-f5d45791",
   rendererPackageName: "react-dom"
 };
 var internals$jscomp$inline_2203 = {
@@ -16672,7 +16683,7 @@ var internals$jscomp$inline_2203 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-www-classic-fbb135ff"
+  reconcilerVersion: "18.3.0-www-classic-f5d45791"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_2204 = __REACT_DEVTOOLS_GLOBAL_HOOK__;
@@ -16915,4 +16926,4 @@ exports.unstable_renderSubtreeIntoContainer = function (
   );
 };
 exports.unstable_runWithPriority = runWithPriority;
-exports.version = "18.3.0-www-classic-fbb135ff";
+exports.version = "18.3.0-www-classic-f5d45791";

compiled/facebook-www/ReactDOM-prod.modern.js

@@ -3665,16 +3665,20 @@ function updateMutableSource(source, getSnapshot, subscribe) {
   var hook = updateWorkInProgressHook();
   return useMutableSource(hook, source, getSnapshot, subscribe);
 }
-function updateSyncExternalStore(subscribe, getSnapshot) {
+function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   var fiber = currentlyRenderingFiber$1,
     hook = updateWorkInProgressHook(),
-    nextSnapshot = getSnapshot(),
-    snapshotChanged = !objectIs(
-      (currentHook || hook).memoizedState,
-      nextSnapshot
-    );
+    isHydrating$jscomp$0 = isHydrating;
+  if (isHydrating$jscomp$0) {
+    if (void 0 === getServerSnapshot) throw Error(formatProdErrorMessage(407));
+    getServerSnapshot = getServerSnapshot();
+  } else getServerSnapshot = getSnapshot();
+  var snapshotChanged = !objectIs(
+    (currentHook || hook).memoizedState,
+    getServerSnapshot
+  );
   snapshotChanged &&
-    ((hook.memoizedState = nextSnapshot), (didReceiveUpdate = !0));
+    ((hook.memoizedState = getServerSnapshot), (didReceiveUpdate = !0));
   hook = hook.queue;
   updateEffect(subscribeToStore.bind(null, fiber, hook, subscribe), [
     subscribe
@@ -3687,16 +3691,23 @@ function updateSyncExternalStore(subscribe, getSnapshot) {
     fiber.flags |= 2048;
     pushEffect(
       9,
-      updateStoreInstance.bind(null, fiber, hook, nextSnapshot, getSnapshot),
+      updateStoreInstance.bind(
+        null,
+        fiber,
+        hook,
+        getServerSnapshot,
+        getSnapshot
+      ),
       { destroy: void 0 },
       null
     );
     subscribe = workInProgressRoot;
     if (null === subscribe) throw Error(formatProdErrorMessage(349));
-    includesBlockingLane(subscribe, renderLanes$1) ||
-      pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot);
+    isHydrating$jscomp$0 ||
+      includesBlockingLane(subscribe, renderLanes$1) ||
+      pushStoreConsistencyCheck(fiber, getSnapshot, getServerSnapshot);
   }
-  return nextSnapshot;
+  return getServerSnapshot;
 }
 function pushStoreConsistencyCheck(fiber, getSnapshot, renderedSnapshot) {
   fiber.flags |= 16384;
@@ -16169,7 +16180,7 @@ Internals.Events = [
 var devToolsConfig$jscomp$inline_1788 = {
   findFiberByHostInstance: getClosestInstanceFromNode,
   bundleType: 0,
-  version: "18.3.0-www-modern-8a5299e6",
+  version: "18.3.0-www-modern-c54c7d5d",
   rendererPackageName: "react-dom"
 };
 var internals$jscomp$inline_2167 = {
@@ -16200,7 +16211,7 @@ var internals$jscomp$inline_2167 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-www-modern-8a5299e6"
+  reconcilerVersion: "18.3.0-www-modern-c54c7d5d"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_2168 = __REACT_DEVTOOLS_GLOBAL_HOOK__;
@@ -16371,4 +16382,4 @@ exports.unstable_createEventHandle = function (type, options) {
   return eventHandle;
 };
 exports.unstable_runWithPriority = runWithPriority;
-exports.version = "18.3.0-www-modern-8a5299e6";
+exports.version = "18.3.0-www-modern-c54c7d5d";

compiled/facebook-www/ReactDOM-profiling.classic.js

@@ -3918,16 +3918,20 @@ function updateMutableSource(source, getSnapshot, subscribe) {
   var hook = updateWorkInProgressHook();
   return useMutableSource(hook, source, getSnapshot, subscribe);
 }
-function updateSyncExternalStore(subscribe, getSnapshot) {
+function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   var fiber = currentlyRenderingFiber$1,
     hook = updateWorkInProgressHook(),
-    nextSnapshot = getSnapshot(),
-    snapshotChanged = !objectIs(
-      (currentHook || hook).memoizedState,
-      nextSnapshot
-    );
+    isHydrating$jscomp$0 = isHydrating;
+  if (isHydrating$jscomp$0) {
+    if (void 0 === getServerSnapshot) throw Error(formatProdErrorMessage(407));
+    getServerSnapshot = getServerSnapshot();
+  } else getServerSnapshot = getSnapshot();
+  var snapshotChanged = !objectIs(
+    (currentHook || hook).memoizedState,
+    getServerSnapshot
+  );
   snapshotChanged &&
-    ((hook.memoizedState = nextSnapshot), (didReceiveUpdate = !0));
+    ((hook.memoizedState = getServerSnapshot), (didReceiveUpdate = !0));
   hook = hook.queue;
   updateEffect(subscribeToStore.bind(null, fiber, hook, subscribe), [
     subscribe
@@ -3940,16 +3944,23 @@ function updateSyncExternalStore(subscribe, getSnapshot) {
     fiber.flags |= 2048;
     pushEffect(
       9,
-      updateStoreInstance.bind(null, fiber, hook, nextSnapshot, getSnapshot),
+      updateStoreInstance.bind(
+        null,
+        fiber,
+        hook,
+        getServerSnapshot,
+        getSnapshot
+      ),
       { destroy: void 0 },
       null
     );
     subscribe = workInProgressRoot;
     if (null === subscribe) throw Error(formatProdErrorMessage(349));
-    includesBlockingLane(subscribe, renderLanes$1) ||
-      pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot);
+    isHydrating$jscomp$0 ||
+      includesBlockingLane(subscribe, renderLanes$1) ||
+      pushStoreConsistencyCheck(fiber, getSnapshot, getServerSnapshot);
   }
-  return nextSnapshot;
+  return getServerSnapshot;
 }
 function pushStoreConsistencyCheck(fiber, getSnapshot, renderedSnapshot) {
   fiber.flags |= 16384;
@@ -17417,7 +17428,7 @@ Internals.Events = [
 var devToolsConfig$jscomp$inline_1914 = {
   findFiberByHostInstance: getClosestInstanceFromNode,
   bundleType: 0,
-  version: "18.3.0-www-classic-b9ad8cd3",
+  version: "18.3.0-www-classic-214289fa",
   rendererPackageName: "react-dom"
 };
 (function (internals) {
@@ -17461,7 +17472,7 @@ var devToolsConfig$jscomp$inline_1914 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-www-classic-b9ad8cd3"
+  reconcilerVersion: "18.3.0-www-classic-214289fa"
 });
 assign(Internals, {
   ReactBrowserEventEmitter: {
@@ -17691,7 +17702,7 @@ exports.unstable_renderSubtreeIntoContainer = function (
   );
 };
 exports.unstable_runWithPriority = runWithPriority;
-exports.version = "18.3.0-www-classic-b9ad8cd3";
+exports.version = "18.3.0-www-classic-214289fa";
 
           /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */
 if (

compiled/facebook-www/ReactDOM-profiling.modern.js

@@ -3811,16 +3811,20 @@ function updateMutableSource(source, getSnapshot, subscribe) {
   var hook = updateWorkInProgressHook();
   return useMutableSource(hook, source, getSnapshot, subscribe);
 }
-function updateSyncExternalStore(subscribe, getSnapshot) {
+function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   var fiber = currentlyRenderingFiber$1,
     hook = updateWorkInProgressHook(),
-    nextSnapshot = getSnapshot(),
-    snapshotChanged = !objectIs(
-      (currentHook || hook).memoizedState,
-      nextSnapshot
-    );
+    isHydrating$jscomp$0 = isHydrating;
+  if (isHydrating$jscomp$0) {
+    if (void 0 === getServerSnapshot) throw Error(formatProdErrorMessage(407));
+    getServerSnapshot = getServerSnapshot();
+  } else getServerSnapshot = getSnapshot();
+  var snapshotChanged = !objectIs(
+    (currentHook || hook).memoizedState,
+    getServerSnapshot
+  );
   snapshotChanged &&
-    ((hook.memoizedState = nextSnapshot), (didReceiveUpdate = !0));
+    ((hook.memoizedState = getServerSnapshot), (didReceiveUpdate = !0));
   hook = hook.queue;
   updateEffect(subscribeToStore.bind(null, fiber, hook, subscribe), [
     subscribe
@@ -3833,16 +3837,23 @@ function updateSyncExternalStore(subscribe, getSnapshot) {
     fiber.flags |= 2048;
     pushEffect(
       9,
-      updateStoreInstance.bind(null, fiber, hook, nextSnapshot, getSnapshot),
+      updateStoreInstance.bind(
+        null,
+        fiber,
+        hook,
+        getServerSnapshot,
+        getSnapshot
+      ),
       { destroy: void 0 },
       null
     );
     subscribe = workInProgressRoot;
     if (null === subscribe) throw Error(formatProdErrorMessage(349));
-    includesBlockingLane(subscribe, renderLanes$1) ||
-      pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot);
+    isHydrating$jscomp$0 ||
+      includesBlockingLane(subscribe, renderLanes$1) ||
+      pushStoreConsistencyCheck(fiber, getSnapshot, getServerSnapshot);
   }
-  return nextSnapshot;
+  return getServerSnapshot;
 }
 function pushStoreConsistencyCheck(fiber, getSnapshot, renderedSnapshot) {
   fiber.flags |= 16384;
@@ -16938,7 +16949,7 @@ Internals.Events = [
 var devToolsConfig$jscomp$inline_1873 = {
   findFiberByHostInstance: getClosestInstanceFromNode,
   bundleType: 0,
-  version: "18.3.0-www-modern-a64d6dfb",
+  version: "18.3.0-www-modern-26883fc6",
   rendererPackageName: "react-dom"
 };
 (function (internals) {
@@ -16983,7 +16994,7 @@ var devToolsConfig$jscomp$inline_1873 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-www-modern-a64d6dfb"
+  reconcilerVersion: "18.3.0-www-modern-26883fc6"
 });
 exports.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED = Internals;
 exports.createPortal = function (children, container) {
@@ -17141,7 +17152,7 @@ exports.unstable_createEventHandle = function (type, options) {
   return eventHandle;
 };
 exports.unstable_runWithPriority = runWithPriority;
-exports.version = "18.3.0-www-modern-a64d6dfb";
+exports.version = "18.3.0-www-modern-26883fc6";
 
           /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */
 if (

compiled/facebook-www/ReactDOMTesting-dev.classic.js

@@ -13933,8 +13933,6 @@ function mountSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   // clean-up function, and we track the deps correctly, we can call pushEffect
   // directly, without storing any additional state. For the same reason, we
   // don't need to set a static flag, either.
-  // TODO: We can move this to the passive phase once we add a pre-commit
-  // consistency check. See the next comment.
 
   fiber.flags |= Passive$1;
   pushEffect(
@@ -13952,18 +13950,33 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   // normal rules of React, and only works because store updates are
   // always synchronous.
 
-  var nextSnapshot = getSnapshot();
+  var nextSnapshot;
+  var isHydrating = getIsHydrating();
 
-  {
-    if (!didWarnUncachedGetSnapshot) {
-      var cachedSnapshot = getSnapshot();
+  if (isHydrating) {
+    // Needed for strict mode double render
+    if (getServerSnapshot === undefined) {
+      throw new Error(
+        "Missing getServerSnapshot, which is required for " +
+          "server-rendered content. Will revert to client rendering."
+      );
+    }
 
-      if (!objectIs(nextSnapshot, cachedSnapshot)) {
-        error(
-          "The result of getSnapshot should be cached to avoid an infinite loop"
-        );
+    nextSnapshot = getServerSnapshot();
+  } else {
+    nextSnapshot = getSnapshot();
 
-        didWarnUncachedGetSnapshot = true;
+    {
+      if (!didWarnUncachedGetSnapshot) {
+        var cachedSnapshot = getSnapshot();
+
+        if (!objectIs(nextSnapshot, cachedSnapshot)) {
+          error(
+            "The result of getSnapshot should be cached to avoid an infinite loop"
+          );
+
+          didWarnUncachedGetSnapshot = true;
+        }
       }
     }
   }
@@ -13986,7 +13999,7 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
 
   if (
     inst.getSnapshot !== getSnapshot ||
-    snapshotChanged || // Check if the susbcribe function changed. We can save some memory by
+    snapshotChanged || // Check if the subscribe function changed. We can save some memory by
     // checking whether we scheduled a subscription effect above.
     (workInProgressHook !== null &&
       workInProgressHook.memoizedState.tag & HasEffect)
@@ -14009,7 +14022,7 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
       );
     }
 
-    if (!includesBlockingLane(root, renderLanes$1)) {
+    if (!isHydrating && !includesBlockingLane(root, renderLanes$1)) {
       pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot);
     }
   }
@@ -14328,7 +14341,8 @@ function updateEffectImpl(fiberFlags, hookFlags, create, deps) {
   var hook = updateWorkInProgressHook();
   var nextDeps = deps === undefined ? null : deps;
   var effect = hook.memoizedState;
-  var inst = effect.inst; // currentHook is null when rerendering after a render phase state update.
+  var inst = effect.inst; // currentHook is null on initial mount when rerendering after a render phase
+  // state update or for strict mode.
 
   if (currentHook !== null) {
     if (nextDeps !== null) {
@@ -15577,7 +15591,7 @@ var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
     useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) {
       currentHookNameInDev = "useSyncExternalStore";
       updateHookTypesDev();
-      return updateSyncExternalStore(subscribe, getSnapshot);
+      return updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
     },
     useId: function () {
       currentHookNameInDev = "useId";
@@ -15721,7 +15735,7 @@ var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
     useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) {
       currentHookNameInDev = "useSyncExternalStore";
       updateHookTypesDev();
-      return updateSyncExternalStore(subscribe, getSnapshot);
+      return updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
     },
     useId: function () {
       currentHookNameInDev = "useId";
@@ -16052,7 +16066,7 @@ var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
       currentHookNameInDev = "useSyncExternalStore";
       warnInvalidHookAccess();
       updateHookTypesDev();
-      return updateSyncExternalStore(subscribe, getSnapshot);
+      return updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
     },
     useId: function () {
       currentHookNameInDev = "useId";
@@ -16219,7 +16233,7 @@ var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
       currentHookNameInDev = "useSyncExternalStore";
       warnInvalidHookAccess();
       updateHookTypesDev();
-      return updateSyncExternalStore(subscribe, getSnapshot);
+      return updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
     },
     useId: function () {
       currentHookNameInDev = "useId";
@@ -34785,7 +34799,7 @@ function createFiberRoot(
   return root;
 }
 
-var ReactVersion = "18.3.0-www-classic-cc8acd04";
+var ReactVersion = "18.3.0-www-classic-02013e9c";
 
 function createPortal$1(
   children,

compiled/facebook-www/ReactDOMTesting-dev.modern.js

@@ -13874,8 +13874,6 @@ function mountSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   // clean-up function, and we track the deps correctly, we can call pushEffect
   // directly, without storing any additional state. For the same reason, we
   // don't need to set a static flag, either.
-  // TODO: We can move this to the passive phase once we add a pre-commit
-  // consistency check. See the next comment.
 
   fiber.flags |= Passive$1;
   pushEffect(
@@ -13893,18 +13891,33 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   // normal rules of React, and only works because store updates are
   // always synchronous.
 
-  var nextSnapshot = getSnapshot();
+  var nextSnapshot;
+  var isHydrating = getIsHydrating();
 
-  {
-    if (!didWarnUncachedGetSnapshot) {
-      var cachedSnapshot = getSnapshot();
+  if (isHydrating) {
+    // Needed for strict mode double render
+    if (getServerSnapshot === undefined) {
+      throw new Error(
+        "Missing getServerSnapshot, which is required for " +
+          "server-rendered content. Will revert to client rendering."
+      );
+    }
 
-      if (!objectIs(nextSnapshot, cachedSnapshot)) {
-        error(
-          "The result of getSnapshot should be cached to avoid an infinite loop"
-        );
+    nextSnapshot = getServerSnapshot();
+  } else {
+    nextSnapshot = getSnapshot();
 
-        didWarnUncachedGetSnapshot = true;
+    {
+      if (!didWarnUncachedGetSnapshot) {
+        var cachedSnapshot = getSnapshot();
+
+        if (!objectIs(nextSnapshot, cachedSnapshot)) {
+          error(
+            "The result of getSnapshot should be cached to avoid an infinite loop"
+          );
+
+          didWarnUncachedGetSnapshot = true;
+        }
       }
     }
   }
@@ -13927,7 +13940,7 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
 
   if (
     inst.getSnapshot !== getSnapshot ||
-    snapshotChanged || // Check if the susbcribe function changed. We can save some memory by
+    snapshotChanged || // Check if the subscribe function changed. We can save some memory by
     // checking whether we scheduled a subscription effect above.
     (workInProgressHook !== null &&
       workInProgressHook.memoizedState.tag & HasEffect)
@@ -13950,7 +13963,7 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
       );
     }
 
-    if (!includesBlockingLane(root, renderLanes$1)) {
+    if (!isHydrating && !includesBlockingLane(root, renderLanes$1)) {
       pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot);
     }
   }
@@ -14269,7 +14282,8 @@ function updateEffectImpl(fiberFlags, hookFlags, create, deps) {
   var hook = updateWorkInProgressHook();
   var nextDeps = deps === undefined ? null : deps;
   var effect = hook.memoizedState;
-  var inst = effect.inst; // currentHook is null when rerendering after a render phase state update.
+  var inst = effect.inst; // currentHook is null on initial mount when rerendering after a render phase
+  // state update or for strict mode.
 
   if (currentHook !== null) {
     if (nextDeps !== null) {
@@ -15518,7 +15532,7 @@ var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
     useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) {
       currentHookNameInDev = "useSyncExternalStore";
       updateHookTypesDev();
-      return updateSyncExternalStore(subscribe, getSnapshot);
+      return updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
     },
     useId: function () {
       currentHookNameInDev = "useId";
@@ -15662,7 +15676,7 @@ var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
     useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) {
       currentHookNameInDev = "useSyncExternalStore";
       updateHookTypesDev();
-      return updateSyncExternalStore(subscribe, getSnapshot);
+      return updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
     },
     useId: function () {
       currentHookNameInDev = "useId";
@@ -15993,7 +16007,7 @@ var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
       currentHookNameInDev = "useSyncExternalStore";
       warnInvalidHookAccess();
       updateHookTypesDev();
-      return updateSyncExternalStore(subscribe, getSnapshot);
+      return updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
     },
     useId: function () {
       currentHookNameInDev = "useId";
@@ -16160,7 +16174,7 @@ var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
       currentHookNameInDev = "useSyncExternalStore";
       warnInvalidHookAccess();
       updateHookTypesDev();
-      return updateSyncExternalStore(subscribe, getSnapshot);
+      return updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
     },
     useId: function () {
       currentHookNameInDev = "useId";
@@ -34630,7 +34644,7 @@ function createFiberRoot(
   return root;
 }
 
-var ReactVersion = "18.3.0-www-modern-b5e9f35e";
+var ReactVersion = "18.3.0-www-modern-350137bf";
 
 function createPortal$1(
   children,

compiled/facebook-www/ReactDOMTesting-prod.classic.js

@@ -3858,16 +3858,20 @@ function updateMutableSource(source, getSnapshot, subscribe) {
   var hook = updateWorkInProgressHook();
   return useMutableSource(hook, source, getSnapshot, subscribe);
 }
-function updateSyncExternalStore(subscribe, getSnapshot) {
+function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   var fiber = currentlyRenderingFiber$1,
     hook = updateWorkInProgressHook(),
-    nextSnapshot = getSnapshot(),
-    snapshotChanged = !objectIs(
-      (currentHook || hook).memoizedState,
-      nextSnapshot
-    );
+    isHydrating$jscomp$0 = isHydrating;
+  if (isHydrating$jscomp$0) {
+    if (void 0 === getServerSnapshot) throw Error(formatProdErrorMessage(407));
+    getServerSnapshot = getServerSnapshot();
+  } else getServerSnapshot = getSnapshot();
+  var snapshotChanged = !objectIs(
+    (currentHook || hook).memoizedState,
+    getServerSnapshot
+  );
   snapshotChanged &&
-    ((hook.memoizedState = nextSnapshot), (didReceiveUpdate = !0));
+    ((hook.memoizedState = getServerSnapshot), (didReceiveUpdate = !0));
   hook = hook.queue;
   updateEffect(subscribeToStore.bind(null, fiber, hook, subscribe), [
     subscribe
@@ -3880,16 +3884,23 @@ function updateSyncExternalStore(subscribe, getSnapshot) {
     fiber.flags |= 2048;
     pushEffect(
       9,
-      updateStoreInstance.bind(null, fiber, hook, nextSnapshot, getSnapshot),
+      updateStoreInstance.bind(
+        null,
+        fiber,
+        hook,
+        getServerSnapshot,
+        getSnapshot
+      ),
       { destroy: void 0 },
       null
     );
     subscribe = workInProgressRoot;
     if (null === subscribe) throw Error(formatProdErrorMessage(349));
-    includesBlockingLane(subscribe, renderLanes$1) ||
-      pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot);
+    isHydrating$jscomp$0 ||
+      includesBlockingLane(subscribe, renderLanes$1) ||
+      pushStoreConsistencyCheck(fiber, getSnapshot, getServerSnapshot);
   }
-  return nextSnapshot;
+  return getServerSnapshot;
 }
 function pushStoreConsistencyCheck(fiber, getSnapshot, renderedSnapshot) {
   fiber.flags |= 16384;
@@ -16971,7 +16982,7 @@ Internals.Events = [
 var devToolsConfig$jscomp$inline_1858 = {
   findFiberByHostInstance: getClosestInstanceFromNode,
   bundleType: 0,
-  version: "18.3.0-www-classic-e1e0fe51",
+  version: "18.3.0-www-classic-d297891e",
   rendererPackageName: "react-dom"
 };
 var internals$jscomp$inline_2237 = {
@@ -17001,7 +17012,7 @@ var internals$jscomp$inline_2237 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-www-classic-e1e0fe51"
+  reconcilerVersion: "18.3.0-www-classic-d297891e"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_2238 = __REACT_DEVTOOLS_GLOBAL_HOOK__;
@@ -17395,4 +17406,4 @@ exports.unstable_renderSubtreeIntoContainer = function (
   );
 };
 exports.unstable_runWithPriority = runWithPriority;
-exports.version = "18.3.0-www-classic-e1e0fe51";
+exports.version = "18.3.0-www-classic-d297891e";

compiled/facebook-www/ReactDOMTesting-prod.modern.js

@@ -3806,16 +3806,20 @@ function updateMutableSource(source, getSnapshot, subscribe) {
   var hook = updateWorkInProgressHook();
   return useMutableSource(hook, source, getSnapshot, subscribe);
 }
-function updateSyncExternalStore(subscribe, getSnapshot) {
+function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   var fiber = currentlyRenderingFiber$1,
     hook = updateWorkInProgressHook(),
-    nextSnapshot = getSnapshot(),
-    snapshotChanged = !objectIs(
-      (currentHook || hook).memoizedState,
-      nextSnapshot
-    );
+    isHydrating$jscomp$0 = isHydrating;
+  if (isHydrating$jscomp$0) {
+    if (void 0 === getServerSnapshot) throw Error(formatProdErrorMessage(407));
+    getServerSnapshot = getServerSnapshot();
+  } else getServerSnapshot = getSnapshot();
+  var snapshotChanged = !objectIs(
+    (currentHook || hook).memoizedState,
+    getServerSnapshot
+  );
   snapshotChanged &&
-    ((hook.memoizedState = nextSnapshot), (didReceiveUpdate = !0));
+    ((hook.memoizedState = getServerSnapshot), (didReceiveUpdate = !0));
   hook = hook.queue;
   updateEffect(subscribeToStore.bind(null, fiber, hook, subscribe), [
     subscribe
@@ -3828,16 +3832,23 @@ function updateSyncExternalStore(subscribe, getSnapshot) {
     fiber.flags |= 2048;
     pushEffect(
       9,
-      updateStoreInstance.bind(null, fiber, hook, nextSnapshot, getSnapshot),
+      updateStoreInstance.bind(
+        null,
+        fiber,
+        hook,
+        getServerSnapshot,
+        getSnapshot
+      ),
       { destroy: void 0 },
       null
     );
     subscribe = workInProgressRoot;
     if (null === subscribe) throw Error(formatProdErrorMessage(349));
-    includesBlockingLane(subscribe, renderLanes$1) ||
-      pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot);
+    isHydrating$jscomp$0 ||
+      includesBlockingLane(subscribe, renderLanes$1) ||
+      pushStoreConsistencyCheck(fiber, getSnapshot, getServerSnapshot);
   }
-  return nextSnapshot;
+  return getServerSnapshot;
 }
 function pushStoreConsistencyCheck(fiber, getSnapshot, renderedSnapshot) {
   fiber.flags |= 16384;
@@ -16553,7 +16564,7 @@ Internals.Events = [
 var devToolsConfig$jscomp$inline_1817 = {
   findFiberByHostInstance: getClosestInstanceFromNode,
   bundleType: 0,
-  version: "18.3.0-www-modern-bc9d666a",
+  version: "18.3.0-www-modern-6995898a",
   rendererPackageName: "react-dom"
 };
 var internals$jscomp$inline_2201 = {
@@ -16584,7 +16595,7 @@ var internals$jscomp$inline_2201 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-www-modern-bc9d666a"
+  reconcilerVersion: "18.3.0-www-modern-6995898a"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_2202 = __REACT_DEVTOOLS_GLOBAL_HOOK__;
@@ -16906,4 +16917,4 @@ exports.unstable_createEventHandle = function (type, options) {
   return eventHandle;
 };
 exports.unstable_runWithPriority = runWithPriority;
-exports.version = "18.3.0-www-modern-bc9d666a";
+exports.version = "18.3.0-www-modern-6995898a";

compiled/facebook-www/ReactTestRenderer-dev.classic.js

@@ -8050,8 +8050,6 @@ function mountSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   // clean-up function, and we track the deps correctly, we can call pushEffect
   // directly, without storing any additional state. For the same reason, we
   // don't need to set a static flag, either.
-  // TODO: We can move this to the passive phase once we add a pre-commit
-  // consistency check. See the next comment.
 
   fiber.flags |= Passive$1;
   pushEffect(
@@ -8069,18 +8067,22 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   // normal rules of React, and only works because store updates are
   // always synchronous.
 
-  var nextSnapshot = getSnapshot();
+  var nextSnapshot;
 
   {
-    if (!didWarnUncachedGetSnapshot) {
-      var cachedSnapshot = getSnapshot();
+    nextSnapshot = getSnapshot();
 
-      if (!objectIs(nextSnapshot, cachedSnapshot)) {
-        error(
-          "The result of getSnapshot should be cached to avoid an infinite loop"
-        );
+    {
+      if (!didWarnUncachedGetSnapshot) {
+        var cachedSnapshot = getSnapshot();
 
-        didWarnUncachedGetSnapshot = true;
+        if (!objectIs(nextSnapshot, cachedSnapshot)) {
+          error(
+            "The result of getSnapshot should be cached to avoid an infinite loop"
+          );
+
+          didWarnUncachedGetSnapshot = true;
+        }
       }
     }
   }
@@ -8103,7 +8105,7 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
 
   if (
     inst.getSnapshot !== getSnapshot ||
-    snapshotChanged || // Check if the susbcribe function changed. We can save some memory by
+    snapshotChanged || // Check if the subscribe function changed. We can save some memory by
     // checking whether we scheduled a subscription effect above.
     (workInProgressHook !== null &&
       workInProgressHook.memoizedState.tag & HasEffect)
@@ -8310,7 +8312,8 @@ function updateEffectImpl(fiberFlags, hookFlags, create, deps) {
   var hook = updateWorkInProgressHook();
   var nextDeps = deps === undefined ? null : deps;
   var effect = hook.memoizedState;
-  var inst = effect.inst; // currentHook is null when rerendering after a render phase state update.
+  var inst = effect.inst; // currentHook is null on initial mount when rerendering after a render phase
+  // state update or for strict mode.
 
   if (currentHook !== null) {
     if (nextDeps !== null) {
@@ -24549,7 +24552,7 @@ function createFiberRoot(
   return root;
 }
 
-var ReactVersion = "18.3.0-www-classic-b4adcaa5";
+var ReactVersion = "18.3.0-www-classic-2a7e99ed";
 
 // Might add PROFILE later.
 

compiled/facebook-www/ReactTestRenderer-dev.modern.js

@@ -8050,8 +8050,6 @@ function mountSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   // clean-up function, and we track the deps correctly, we can call pushEffect
   // directly, without storing any additional state. For the same reason, we
   // don't need to set a static flag, either.
-  // TODO: We can move this to the passive phase once we add a pre-commit
-  // consistency check. See the next comment.
 
   fiber.flags |= Passive$1;
   pushEffect(
@@ -8069,18 +8067,22 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
   // normal rules of React, and only works because store updates are
   // always synchronous.
 
-  var nextSnapshot = getSnapshot();
+  var nextSnapshot;
 
   {
-    if (!didWarnUncachedGetSnapshot) {
-      var cachedSnapshot = getSnapshot();
+    nextSnapshot = getSnapshot();
 
-      if (!objectIs(nextSnapshot, cachedSnapshot)) {
-        error(
-          "The result of getSnapshot should be cached to avoid an infinite loop"
-        );
+    {
+      if (!didWarnUncachedGetSnapshot) {
+        var cachedSnapshot = getSnapshot();
 
-        didWarnUncachedGetSnapshot = true;
+        if (!objectIs(nextSnapshot, cachedSnapshot)) {
+          error(
+            "The result of getSnapshot should be cached to avoid an infinite loop"
+          );
+
+          didWarnUncachedGetSnapshot = true;
+        }
       }
     }
   }
@@ -8103,7 +8105,7 @@ function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) {
 
   if (
     inst.getSnapshot !== getSnapshot ||
-    snapshotChanged || // Check if the susbcribe function changed. We can save some memory by
+    snapshotChanged || // Check if the subscribe function changed. We can save some memory by
     // checking whether we scheduled a subscription effect above.
     (workInProgressHook !== null &&
       workInProgressHook.memoizedState.tag & HasEffect)
@@ -8310,7 +8312,8 @@ function updateEffectImpl(fiberFlags, hookFlags, create, deps) {
   var hook = updateWorkInProgressHook();
   var nextDeps = deps === undefined ? null : deps;
   var effect = hook.memoizedState;
-  var inst = effect.inst; // currentHook is null when rerendering after a render phase state update.
+  var inst = effect.inst; // currentHook is null on initial mount when rerendering after a render phase
+  // state update or for strict mode.
 
   if (currentHook !== null) {
     if (nextDeps !== null) {
@@ -24549,7 +24552,7 @@ function createFiberRoot(
   return root;
 }
 
-var ReactVersion = "18.3.0-www-modern-bc9d666a";
+var ReactVersion = "18.3.0-www-modern-6995898a";
 
 // Might add PROFILE later.