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Fix: useOptimistic should return passthrough value when there are no updates pending (#27936)
This fixes a bug that happened when the canonical value passed to useOptimistic without an accompanying call to setOptimistic. In this scenario, useOptimistic should pass through the new canonical value. I had written tests for the more complicated scenario, where a new value is passed while there are still pending optimistic updates, but not this simpler one. DiffTrain build for [60a927d](60a927d)
1 parent 990d5cc commit f10aaf1

19 files changed

+145
-65
lines changed

‎compiled/facebook-www/REVISION‎

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0ac3ea471fbcb7d79bc7d36179e960c72c779e76
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60a927d04ad3888facebcdf7da620aa1cfc9528f

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

Lines changed: 1 addition & 1 deletion
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@@ -24,7 +24,7 @@ if (__DEV__) {
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) {
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__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(new Error());
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}
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var ReactVersion = "18.3.0-www-classic-23db00d6";
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var ReactVersion = "18.3.0-www-classic-6f4b3c51";
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// ATTENTION
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// When adding new symbols to this file,

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

Lines changed: 1 addition & 1 deletion
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@@ -587,4 +587,4 @@ exports.useSyncExternalStore = function (
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exports.useTransition = function () {
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return ReactCurrentDispatcher.current.useTransition();
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};
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exports.version = "18.3.0-www-classic-db2e638d";
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exports.version = "18.3.0-www-classic-7b414a88";

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

Lines changed: 12 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -66,7 +66,7 @@ if (__DEV__) {
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return self;
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}
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var ReactVersion = "18.3.0-www-classic-47994933";
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var ReactVersion = "18.3.0-www-classic-87e74e5e";
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var LegacyRoot = 0;
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var ConcurrentRoot = 1;
@@ -9051,10 +9051,19 @@ if (__DEV__) {
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queue.pending = null;
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}
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9054-
if (baseQueue !== null) {
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var baseState = hook.baseState;
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if (baseQueue === null) {
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// If there are no pending updates, then the memoized state should be the
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// same as the base state. Currently these only diverge in the case of
9059+
// useOptimistic, because useOptimistic accepts a new baseState on
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// every render.
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hook.memoizedState = baseState; // We don't need to call markWorkInProgressReceivedUpdate because
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// baseState is derived from other reactive values.
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} else {
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// We have a queue to process.
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var first = baseQueue.next;
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var newState = hook.baseState;
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var newState = baseState;
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var newBaseState = null;
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var newBaseQueueFirst = null;
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var newBaseQueueLast = null;

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

Lines changed: 12 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -66,7 +66,7 @@ if (__DEV__) {
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return self;
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}
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var ReactVersion = "18.3.0-www-modern-e805922c";
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var ReactVersion = "18.3.0-www-modern-dc8082dd";
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var LegacyRoot = 0;
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var ConcurrentRoot = 1;
@@ -8801,10 +8801,19 @@ if (__DEV__) {
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queue.pending = null;
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}
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if (baseQueue !== null) {
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var baseState = hook.baseState;
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if (baseQueue === null) {
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// If there are no pending updates, then the memoized state should be the
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// same as the base state. Currently these only diverge in the case of
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// useOptimistic, because useOptimistic accepts a new baseState on
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// every render.
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hook.memoizedState = baseState; // We don't need to call markWorkInProgressReceivedUpdate because
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// baseState is derived from other reactive values.
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} else {
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// We have a queue to process.
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var first = baseQueue.next;
8807-
var newState = hook.baseState;
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var newState = baseState;
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var newBaseState = null;
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var newBaseQueueFirst = null;
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var newBaseQueueLast = null;

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

Lines changed: 5 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -2860,9 +2860,10 @@ function updateReducerImpl(hook, current, reducer) {
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current.baseQueue = baseQueue = pendingQueue;
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queue.pending = null;
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}
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if (null !== baseQueue) {
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pendingQueue = hook.baseState;
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if (null === baseQueue) hook.memoizedState = pendingQueue;
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else {
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current = baseQueue.next;
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pendingQueue = hook.baseState;
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var newBaseQueueFirst = (baseFirst = null),
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newBaseQueueLast = null,
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update = current;
@@ -10291,7 +10292,7 @@ var slice = Array.prototype.slice,
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return null;
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},
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bundleType: 0,
10294-
version: "18.3.0-www-classic-d67c518f",
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version: "18.3.0-www-classic-c9d1dfab",
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rendererPackageName: "react-art"
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};
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var internals$jscomp$inline_1325 = {
@@ -10322,7 +10323,7 @@ var internals$jscomp$inline_1325 = {
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scheduleRoot: null,
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setRefreshHandler: null,
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getCurrentFiber: null,
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reconcilerVersion: "18.3.0-www-classic-d67c518f"
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reconcilerVersion: "18.3.0-www-classic-c9d1dfab"
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};
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if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
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var hook$jscomp$inline_1326 = __REACT_DEVTOOLS_GLOBAL_HOOK__;

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

Lines changed: 5 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -2667,9 +2667,10 @@ function updateReducerImpl(hook, current, reducer) {
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current.baseQueue = baseQueue = pendingQueue;
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queue.pending = null;
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}
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if (null !== baseQueue) {
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pendingQueue = hook.baseState;
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if (null === baseQueue) hook.memoizedState = pendingQueue;
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else {
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current = baseQueue.next;
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pendingQueue = hook.baseState;
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var newBaseQueueFirst = (baseFirst = null),
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newBaseQueueLast = null,
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update = current;
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return null;
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},
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bundleType: 0,
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version: "18.3.0-www-modern-bab56d31",
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version: "18.3.0-www-modern-31c1a5e7",
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rendererPackageName: "react-art"
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};
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var internals$jscomp$inline_1305 = {
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scheduleRoot: null,
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setRefreshHandler: null,
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getCurrentFiber: null,
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reconcilerVersion: "18.3.0-www-modern-bab56d31"
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reconcilerVersion: "18.3.0-www-modern-31c1a5e7"
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};
99939994
if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
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var hook$jscomp$inline_1306 = __REACT_DEVTOOLS_GLOBAL_HOOK__;

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

Lines changed: 12 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -13662,10 +13662,19 @@ if (__DEV__) {
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queue.pending = null;
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}
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if (baseQueue !== null) {
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var baseState = hook.baseState;
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13667+
if (baseQueue === null) {
13668+
// If there are no pending updates, then the memoized state should be the
13669+
// same as the base state. Currently these only diverge in the case of
13670+
// useOptimistic, because useOptimistic accepts a new baseState on
13671+
// every render.
13672+
hook.memoizedState = baseState; // We don't need to call markWorkInProgressReceivedUpdate because
13673+
// baseState is derived from other reactive values.
13674+
} else {
1366613675
// We have a queue to process.
1366713676
var first = baseQueue.next;
13668-
var newState = hook.baseState;
13677+
var newState = baseState;
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var newBaseState = null;
1367013679
var newBaseQueueFirst = null;
1367113680
var newBaseQueueLast = null;
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return root;
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}
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var ReactVersion = "18.3.0-www-classic-df230f01";
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var ReactVersion = "18.3.0-www-classic-1829de97";
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function createPortal$1(
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children,

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

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Original file line numberDiff line numberDiff line change
@@ -13598,10 +13598,19 @@ if (__DEV__) {
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queue.pending = null;
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}
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if (baseQueue !== null) {
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var baseState = hook.baseState;
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13603+
if (baseQueue === null) {
13604+
// If there are no pending updates, then the memoized state should be the
13605+
// same as the base state. Currently these only diverge in the case of
13606+
// useOptimistic, because useOptimistic accepts a new baseState on
13607+
// every render.
13608+
hook.memoizedState = baseState; // We don't need to call markWorkInProgressReceivedUpdate because
13609+
// baseState is derived from other reactive values.
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} else {
1360213611
// We have a queue to process.
1360313612
var first = baseQueue.next;
13604-
var newState = hook.baseState;
13613+
var newState = baseState;
1360513614
var newBaseState = null;
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var newBaseQueueFirst = null;
1360713616
var newBaseQueueLast = null;
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return root;
3478134790
}
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34783-
var ReactVersion = "18.3.0-www-modern-332dd66b";
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var ReactVersion = "18.3.0-www-modern-bac1e3ec";
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3478534794
function createPortal$1(
3478634795
children,

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

Lines changed: 6 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -3600,9 +3600,10 @@ function updateReducerImpl(hook, current, reducer) {
36003600
current.baseQueue = baseQueue = pendingQueue;
36013601
queue.pending = null;
36023602
}
3603-
if (null !== baseQueue) {
3603+
pendingQueue = hook.baseState;
3604+
if (null === baseQueue) hook.memoizedState = pendingQueue;
3605+
else {
36043606
current = baseQueue.next;
3605-
pendingQueue = hook.baseState;
36063607
var newBaseQueueFirst = (baseFirst = null),
36073608
newBaseQueueLast = null,
36083609
update = current;
@@ -16595,7 +16596,7 @@ Internals.Events = [
1659516596
var devToolsConfig$jscomp$inline_1799 = {
1659616597
findFiberByHostInstance: getClosestInstanceFromNode,
1659716598
bundleType: 0,
16598-
version: "18.3.0-www-classic-f0f463da",
16599+
version: "18.3.0-www-classic-be8e039e",
1659916600
rendererPackageName: "react-dom"
1660016601
};
1660116602
var internals$jscomp$inline_2145 = {
@@ -16625,7 +16626,7 @@ var internals$jscomp$inline_2145 = {
1662516626
scheduleRoot: null,
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setRefreshHandler: null,
1662716628
getCurrentFiber: null,
16628-
reconcilerVersion: "18.3.0-www-classic-f0f463da"
16629+
reconcilerVersion: "18.3.0-www-classic-be8e039e"
1662916630
};
1663016631
if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
1663116632
var hook$jscomp$inline_2146 = __REACT_DEVTOOLS_GLOBAL_HOOK__;
@@ -16962,4 +16963,4 @@ exports.useFormState = function () {
1696216963
exports.useFormStatus = function () {
1696316964
throw Error(formatProdErrorMessage(248));
1696416965
};
16965-
exports.version = "18.3.0-www-classic-f0f463da";
16966+
exports.version = "18.3.0-www-classic-be8e039e";

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