[NodeAPI] TurboModule jsRespresentation_ cache fails to set property

[acoates-ms]

When getting a turbomodule, RN creates a JS object wrapper that it uses to cache the results of __turboModuleProxy.get :
https://github.com/facebook/react-native/blob/48ea6867a96bd16dc7aed9af5a8e9ce12a487c22/packages/react-native/ReactCommon/react/nativemodule/core/ReactCommon/TurboModuleBinding.cpp#L178

Here it creates a jsi::Object, which it stores in the TurboModules jsRepresentation_ property. It then sets the new Object's 'proto' property to the actual turbomodule hostobject. then returns that jsi::Object to JS.

Now when the JS gets a value from the TurboModule it goes to TurboModule::get, which uses TurboModule::create to get the value of the property, then attempts to cache the result by setting the result in the jsRepresentation_ object that it created earlier:
https://github.com/facebook/react-native/blob/48ea6867a96bd16dc7aed9af5a8e9ce12a487c22/packages/react-native/ReactCommon/react/nativemodule/core/ReactCommon/TurboModule.h#L64

But for some reason, that set ends up in HostObject::set, which throws:
https://github.com/facebook/react-native/blob/48ea6867a96bd16dc7aed9af5a8e9ce12a487c22/packages/react-native/ReactCommon/jsi/jsi/jsi.cpp#L179

I dont understand why it gets into HostObject::set, as the jsRepresentation_ object was just a plain jsi::Object. I wouldn't expect a set on the jsi::Object to end up in HostObject::set.

	Microsoft.ReactNative.dll!facebook::jsi::HostObject::set(facebook::jsi::Runtime & rt={...}, const facebook::jsi::PropNameID & name={...}, const facebook::jsi::Value & __formal={...}) Line 85	C++
	Microsoft.ReactNative.dll!Microsoft::NodeApiJsi::`anonymous-namespace'::NodeApiJsiRuntime::hostObjectSetTrap::__l2::<lambda_1>::operator()() Line 2469	C++
	Microsoft.ReactNative.dll!Microsoft::NodeApiJsi::`anonymous namespace'::NodeApiJsiRuntime::runInMethodContext<`Microsoft::NodeApiJsi::`anonymous namespace'::NodeApiJsiRuntime::hostObjectSetTrap'::`2'::<lambda_1>>(const char * methodName=0x00007fff953f9bb0, Microsoft::NodeApiJsi::`anonymous-namespace'::NodeApiJsiRuntime::hostObjectSetTrap::__l2::<lambda_1> lambda={...}) Line 2006	C++
	Microsoft.ReactNative.dll!Microsoft::NodeApiJsi::`anonymous namespace'::NodeApiJsiRuntime::hostObjectSetTrap(std::span<napi_value__ *,-1> args={...}) Line 2468	C++
	Microsoft.ReactNative.dll!Microsoft::NodeApiJsi::`anonymous-namespace'::NodeApiJsiRuntime::setProxyTrap::__l2::<lambda_1>::()::__l2::<lambda_1>::operator()() Line 2417	C++
	Microsoft.ReactNative.dll!Microsoft::NodeApiJsi::`anonymous namespace'::NodeApiJsiRuntime::handleCallbackExceptions<``Microsoft::NodeApiJsi::`anonymous namespace'::NodeApiJsiRuntime::setProxyTrap<&Microsoft::NodeApiJsi::`anonymous namespace'::NodeApiJsiRuntime::hostObjectSetTrap,4>'::`2'::<lambda_1>::operator()'::`2'::<lambda_1>>(Microsoft::NodeApiJsi::`anonymous-namespace'::NodeApiJsiRuntime::setProxyTrap::__l2::<lambda_1>::()::__l2::<lambda_1> lambda={...}) Line 2021	C++
	Microsoft.ReactNative.dll!Microsoft::NodeApiJsi::`anonymous-namespace'::NodeApiJsiRuntime::setProxyTrap::__l2::<lambda_1>::operator()(napi_env__ * env=0x00000236b9b2c7c0, napi_callback_info__ * info=0x00000093bcffc320) Line 2416	C++
	Microsoft.ReactNative.dll!`Microsoft::NodeApiJsi::`anonymous namespace'::NodeApiJsiRuntime::setProxyTrap<&Microsoft::NodeApiJsi::`anonymous namespace'::NodeApiJsiRuntime::hostObjectSetTrap,4>'::`2'::<lambda_1>::<lambda_invoker_cdecl>(napi_env__ * env=0x00000236b9b2c7c0, napi_callback_info__ * info=0x00000093bcffc320) Line 2418	C++
	[Inline Frame] hermes.dll!hermes::napi::NapiHostFunctionContext::func::__l2::<lambda_a5336cdf707cb3b82a410896b6e2d4bf>::operator()(hermes::napi::NapiEnvironment *) Line 2061	C++
	[Inline Frame] hermes.dll!hermes::napi::NapiEnvironment::callIntoModule(hermes::napi::NapiHostFunctionContext::func::__l2::<lambda_a5336cdf707cb3b82a410896b6e2d4bf> &&) Line 4977	C++
	hermes.dll!hermes::napi::NapiHostFunctionContext::func(void * context, hermes::vm::Runtime & runtime, hermes::vm::NativeArgs hvArgs) Line 2060	C++
	[Inline Frame] hermes.dll!hermes::vm::NativeFunction::_nativeCall(hermes::vm::NativeFunction * self=0x00000236d642d118, hermes::vm::Runtime &) Line 507	C++
	hermes.dll!hermes::vm::NativeFunction::_callImpl(hermes::vm::Handle<hermes::vm::Callable> selfHandle, hermes::vm::Runtime & runtime={...}) Line 938	C++
	[Inline Frame] hermes.dll!hermes::vm::Callable::call(hermes::vm::Handle<hermes::vm::Callable>) Line 253	C++
	hermes.dll!hermes::vm::Callable::executeCall4(hermes::vm::Handle<hermes::vm::Callable> selfHandle={...}, hermes::vm::Runtime & runtime={...}, hermes::vm::Handle<hermes::vm::HermesValue> thisArgHandle, hermes::vm::HermesValue param1={...}, hermes::vm::HermesValue param2={...}, hermes::vm::HermesValue param3={...}, hermes::vm::HermesValue param4={...}, bool construct=false) Line 318	C++
	hermes.dll!hermes::vm::`anonymous namespace'::setWithTrap(hermes::vm::Runtime & runtime={...}, hermes::vm::Handle<hermes::vm::HermesValue> nameValHandle={...}, hermes::vm::Handle<hermes::vm::HermesValue> valueHandle={...}, hermes::vm::Handle<hermes::vm::Callable> trap={...}, hermes::vm::Handle<hermes::vm::JSObject> handler={...}, hermes::vm::Handle<hermes::vm::JSObject> target={...}, hermes::vm::Handle<hermes::vm::HermesValue> receiver={...}) Line 1022	C++
	hermes.dll!hermes::vm::JSProxy::setComputed(hermes::vm::Handle<hermes::vm::JSObject> selfHandle, hermes::vm::Runtime & runtime={...}, hermes::vm::Handle<hermes::vm::HermesValue> nameValHandle={...}, hermes::vm::Handle<hermes::vm::HermesValue> valueHandle={...}, hermes::vm::Handle<hermes::vm::HermesValue> receiver={...}) Line 1139	C++
	hermes.dll!hermes::vm::JSObject::putComputedWithReceiver_RJS(hermes::vm::Handle<hermes::vm::JSObject> selfHandle={...}, hermes::vm::Runtime & runtime={...}, hermes::vm::Handle<hermes::vm::HermesValue> nameValHandle, hermes::vm::Handle<hermes::vm::HermesValue> valueHandle={...}, hermes::vm::Handle<hermes::vm::HermesValue> receiver={...}, hermes::vm::PropOpFlags opFlags={...}) Line 1663	C++
	[Inline Frame] hermes.dll!hermes::vm::JSObject::putComputed_RJS(hermes::vm::Handle<hermes::vm::JSObject>) Line 1960	C++
	[Inline Frame] hermes.dll!hermes::napi::NapiEnvironment::setComputedProperty(napi_value__ *) Line 5128	C++
	hermes.dll!hermes::napi::NapiEnvironment::setProperty(napi_value__ * object=0x00000236b9fc9c20, napi_value__ * key=0x00000236c8e40b48, napi_value__ * value=0x00000236b9fc9c18) Line 4524	C++
	Microsoft.ReactNative.dll!Microsoft::NodeApiJsi::`anonymous namespace'::NodeApiJsiRuntime::setProperty(napi_value__ * object=0x00000236b9fc9c20, napi_value__ * propertyId=0x00000236c8e40b48, napi_value__ * value=0x00000236b9fc9c18) Line 2256	C++
	Microsoft.ReactNative.dll!Microsoft::NodeApiJsi::`anonymous namespace'::NodeApiJsiRuntime::setPropertyValue(const facebook::jsi::Object & obj={...}, const facebook::jsi::PropNameID & name={...}, const facebook::jsi::Value & value={...}) Line 1382	C++
	Microsoft.ReactNative.dll!facebook::jsi::Object::setPropertyValue(facebook::jsi::Runtime & runtime={...}, const facebook::jsi::PropNameID & name={...}, const facebook::jsi::Value & value={...}) Line 932	C++
	Microsoft.ReactNative.dll!facebook::jsi::Object::setProperty<facebook::jsi::Value &>(facebook::jsi::Runtime & runtime={...}, const facebook::jsi::PropNameID & name={...}, facebook::jsi::Value & value={...}) Line 132	C++
	Microsoft.ReactNative.dll!facebook::react::TurboModule::get(facebook::jsi::Runtime & runtime={...}, const facebook::jsi::PropNameID & propName={...}) Line 65	C++

[chrisglein]

Workaround in place that bypasses the cache. So working, but slower.