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[compiler] Allow assigning ref-accessing functions to objects if not mutated (facebook#34026)
Allows assigning a ref-accessing function to an object so long as that object is not subsequently transitively mutated. We should likely rewrite the ref validation to use the new mutation/aliasing effects, which would provide a more consistent behavior across instruction types and require fewer special cases like this. --- [//]: # (BEGIN SAPLING FOOTER) Stack created with [Sapling](https://sapling-scm.com). Best reviewed with [ReviewStack](https://reviewstack.dev/facebook/react/pull/34026). * facebook#34027 * __->__ facebook#34026 DiffTrain build for [04a7a61](facebook@04a7a61)
1 parent f1287ad commit d45beaf

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+2093
-1706
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‎compiled-rn/VERSION_NATIVE_FB

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19.2.0-native-fb-33a2bf78-20250729
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19.2.0-native-fb-04a7a619-20250729

‎compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/react-dom/cjs/ReactDOM-dev.js

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* @noflow
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* @nolint
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* @preventMunge
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* @generated SignedSource<<f616c8f7f9d908639b4da455f1e82529>>
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* @generated SignedSource<<8e8506e8944c458135b0e15d44df4573>>
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*/
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"use strict";
@@ -404,5 +404,5 @@ __DEV__ &&
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exports.useFormStatus = function () {
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return resolveDispatcher().useHostTransitionStatus();
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};
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exports.version = "19.2.0-native-fb-33a2bf78-20250729";
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exports.version = "19.2.0-native-fb-04a7a619-20250729";
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})();

‎compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/react-dom/cjs/ReactDOM-prod.js

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* @noflow
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* @nolint
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* @preventMunge
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* @generated SignedSource<<3ab6e4755163526946ea3c1deea15f89>>
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* @generated SignedSource<<8eecf84e4a5270ca13110533ee4b413b>>
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*/
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"use strict";
@@ -203,4 +203,4 @@ exports.useFormState = function (action, initialState, permalink) {
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exports.useFormStatus = function () {
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return ReactSharedInternals.H.useHostTransitionStatus();
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};
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exports.version = "19.2.0-native-fb-33a2bf78-20250729";
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exports.version = "19.2.0-native-fb-04a7a619-20250729";

‎compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/react-dom/cjs/ReactDOM-profiling.js

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* @noflow
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* @nolint
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* @preventMunge
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* @generated SignedSource<<3ab6e4755163526946ea3c1deea15f89>>
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* @generated SignedSource<<8eecf84e4a5270ca13110533ee4b413b>>
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*/
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"use strict";
@@ -203,4 +203,4 @@ exports.useFormState = function (action, initialState, permalink) {
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exports.useFormStatus = function () {
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return ReactSharedInternals.H.useHostTransitionStatus();
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};
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exports.version = "19.2.0-native-fb-33a2bf78-20250729";
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exports.version = "19.2.0-native-fb-04a7a619-20250729";

‎compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/react-dom/cjs/ReactDOMClient-dev.js

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* @noflow
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* @nolint
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* @preventMunge
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* @generated SignedSource<<5cd64a5e0eb5f90f0f9f0ede78d1d1f2>>
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* @generated SignedSource<<d41bff48d72785606cba5d8cea25fad9>>
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*/
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/*
@@ -6044,6 +6044,19 @@ __DEV__ &&
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throw SuspenseException;
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}
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}
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function resolveLazy(lazyType) {
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try {
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return callLazyInitInDEV(lazyType);
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} catch (x) {
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if (null !== x && "object" === typeof x && "function" === typeof x.then)
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throw (
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((suspendedThenable = x),
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(needsToResetSuspendedThenableDEV = !0),
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SuspenseException)
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);
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throw x;
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}
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}
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function getSuspendedThenable() {
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if (null === suspendedThenable)
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throw Error(
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("object" === typeof elementType &&
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null !== elementType &&
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elementType.$$typeof === REACT_LAZY_TYPE &&
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callLazyInitInDEV(elementType) === current.type))
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resolveLazy(elementType) === current.type))
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)
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return (
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(current = useFiber(current, element.props)),
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);
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case REACT_LAZY_TYPE:
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var _prevDebugInfo = pushDebugInfo(newChild._debugInfo);
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newChild = callLazyInitInDEV(newChild);
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newChild = resolveLazy(newChild);
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returnFiber = createChild(returnFiber, newChild, lanes);
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currentDebugInfo = _prevDebugInfo;
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return returnFiber;
@@ -6436,7 +6449,7 @@ __DEV__ &&
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case REACT_LAZY_TYPE:
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return (
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(key = pushDebugInfo(newChild._debugInfo)),
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(newChild = callLazyInitInDEV(newChild)),
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(newChild = resolveLazy(newChild)),
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(returnFiber = updateSlot(
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returnFiber,
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oldFiber,
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);
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case REACT_LAZY_TYPE:
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var _prevDebugInfo7 = pushDebugInfo(newChild._debugInfo);
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newChild = callLazyInitInDEV(newChild);
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newChild = resolveLazy(newChild);
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returnFiber = updateFromMap(
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existingChildren,
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returnFiber,
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});
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break;
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case REACT_LAZY_TYPE:
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(child = callLazyInitInDEV(child)),
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(child = resolveLazy(child)),
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warnOnInvalidKey(returnFiber, workInProgress, child, knownKeys);
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}
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return knownKeys;
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("object" === typeof key &&
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null !== key &&
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key.$$typeof === REACT_LAZY_TYPE &&
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callLazyInitInDEV(key) === currentFirstChild.type)
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resolveLazy(key) === currentFirstChild.type)
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) {
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deleteRemainingChildren(
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returnFiber,
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case REACT_LAZY_TYPE:
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return (
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(prevDebugInfo = pushDebugInfo(newChild._debugInfo)),
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(newChild = callLazyInitInDEV(newChild)),
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(newChild = resolveLazy(newChild)),
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(returnFiber = reconcileChildFibersImpl(
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returnFiber,
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currentFirstChild,
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a: {
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var elementType = workInProgress.elementType;
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resetSuspendedCurrentOnMountInLegacyMode(current, workInProgress);
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var props = workInProgress.pendingProps;
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var Component = callLazyInitInDEV(elementType);
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var props = workInProgress.pendingProps,
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Component = resolveLazy(elementType);
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workInProgress.type = Component;
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if ("function" === typeof Component)
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if (shouldConstruct(Component)) {
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pendingUNSAFE_ComponentWillUpdateWarnings = [];
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pendingLegacyContextWarning = new Map();
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};
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var SuspenseException = Error(
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"Suspense Exception: This is not a real error! It's an implementation detail of `use` to interrupt the current render. You must either rethrow it immediately, or move the `use` call outside of the `try/catch` block. Capturing without rethrowing will lead to unexpected behavior.\n\nTo handle async errors, wrap your component in an error boundary, or call the promise's `.catch` method and pass the result to `use`."
26788-
),
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SuspenseyCommitException = Error(
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"Suspense Exception: This is not a real error, and should not leak into userspace. If you're seeing this, it's likely a bug in React."
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),
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SuspenseActionException = Error(
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"Suspense Exception: This is not a real error! It's an implementation detail of `useActionState` to interrupt the current render. You must either rethrow it immediately, or move the `useActionState` call outside of the `try/catch` block. Capturing without rethrowing will lead to unexpected behavior.\n\nTo handle async errors, wrap your component in an error boundary."
26794-
),
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noopSuspenseyCommitThenable = {
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then: function () {
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console.error(
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'Internal React error: A listener was unexpectedly attached to a "noop" thenable. This is a bug in React. Please file an issue.'
26799-
);
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}
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},
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suspendedThenable = null,
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needsToResetSuspendedThenableDEV = !1,
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callComponent = {
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var callComponent = {
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react_stack_bottom_frame: function (Component, props, secondArg) {
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var wasRendering = isRendering;
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isRendering = !0;
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2691826913
},
2691926914
callLazyInitInDEV =
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callLazyInit.react_stack_bottom_frame.bind(callLazyInit),
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SuspenseException = Error(
26917+
"Suspense Exception: This is not a real error! It's an implementation detail of `use` to interrupt the current render. You must either rethrow it immediately, or move the `use` call outside of the `try/catch` block. Capturing without rethrowing will lead to unexpected behavior.\n\nTo handle async errors, wrap your component in an error boundary, or call the promise's `.catch` method and pass the result to `use`."
26918+
),
26919+
SuspenseyCommitException = Error(
26920+
"Suspense Exception: This is not a real error, and should not leak into userspace. If you're seeing this, it's likely a bug in React."
26921+
),
26922+
SuspenseActionException = Error(
26923+
"Suspense Exception: This is not a real error! It's an implementation detail of `useActionState` to interrupt the current render. You must either rethrow it immediately, or move the `useActionState` call outside of the `try/catch` block. Capturing without rethrowing will lead to unexpected behavior.\n\nTo handle async errors, wrap your component in an error boundary."
26924+
),
26925+
noopSuspenseyCommitThenable = {
26926+
then: function () {
26927+
console.error(
26928+
'Internal React error: A listener was unexpectedly attached to a "noop" thenable. This is a bug in React. Please file an issue.'
26929+
);
26930+
}
26931+
},
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suspendedThenable = null,
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needsToResetSuspendedThenableDEV = !1,
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thenableState$1 = null,
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thenableIndexCounter$1 = 0,
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currentDebugInfo = null,
@@ -29012,11 +29025,11 @@ __DEV__ &&
2901229025
};
2901329026
(function () {
2901429027
var isomorphicReactPackageVersion = React.version;
29015-
if ("19.2.0-native-fb-33a2bf78-20250729" !== isomorphicReactPackageVersion)
29028+
if ("19.2.0-native-fb-04a7a619-20250729" !== isomorphicReactPackageVersion)
2901629029
throw Error(
2901729030
'Incompatible React versions: The "react" and "react-dom" packages must have the exact same version. Instead got:\n - react: ' +
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(isomorphicReactPackageVersion +
29019-
"\n - react-dom: 19.2.0-native-fb-33a2bf78-20250729\nLearn more: https://react.dev/warnings/version-mismatch")
29032+
"\n - react-dom: 19.2.0-native-fb-04a7a619-20250729\nLearn more: https://react.dev/warnings/version-mismatch")
2902029033
);
2902129034
})();
2902229035
("function" === typeof Map &&
@@ -29053,10 +29066,10 @@ __DEV__ &&
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!(function () {
2905429067
var internals = {
2905529068
bundleType: 1,
29056-
version: "19.2.0-native-fb-33a2bf78-20250729",
29069+
version: "19.2.0-native-fb-04a7a619-20250729",
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rendererPackageName: "react-dom",
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currentDispatcherRef: ReactSharedInternals,
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reconcilerVersion: "19.2.0-native-fb-33a2bf78-20250729"
29072+
reconcilerVersion: "19.2.0-native-fb-04a7a619-20250729"
2906029073
};
2906129074
internals.overrideHookState = overrideHookState;
2906229075
internals.overrideHookStateDeletePath = overrideHookStateDeletePath;
@@ -29194,5 +29207,5 @@ __DEV__ &&
2919429207
listenToAllSupportedEvents(container);
2919529208
return new ReactDOMHydrationRoot(initialChildren);
2919629209
};
29197-
exports.version = "19.2.0-native-fb-33a2bf78-20250729";
29210+
exports.version = "19.2.0-native-fb-04a7a619-20250729";
2919829211
})();

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