TurboModule spec checking should accept hstring for string arguments

change/react-native-windows-6d9f3161-2868-4c4d-a3a1-a49b9eee3d5b.json

@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "comment": "TurboModule spec checking should accept hstring for string arguments",
+  "packageName": "react-native-windows",
+  "email": "30809111+acoates-ms@users.noreply.github.com",
+  "dependentChangeType": "patch"
+}

vnext/Microsoft.ReactNative.Cxx/NativeModules.h

@@ -411,6 +411,26 @@ constexpr bool MatchInputArg<std::string, std::wstring>() noexcept {
   return true;
 }
 
+template <>
+constexpr bool MatchInputArg<std::string, winrt::hstring>() noexcept {
+  return true;
+}
+
+template <>
+constexpr bool MatchInputArg<winrt::hstring, std::string>() noexcept {
+  return true;
+}
+
+template <>
+constexpr bool MatchInputArg<std::wstring, winrt::hstring>() noexcept {
+  return true;
+}
+
+template <>
+constexpr bool MatchInputArg<winrt::hstring, std::wstring>() noexcept {
+  return true;
+}
+
 template <class TResult, class TInputArgs, class TOutputCallbacks, class TOutputPromises>
 struct MethodSignature {
   using Result = TResult;

vnext/Microsoft.ReactNative/Modules/ClipboardModule.cpp

@@ -48,7 +48,7 @@ void Clipboard::getString(React::ReactPromise<std::string> result) noexcept {
   );
 }
 
-void Clipboard::setString(std::wstring content) noexcept {
+void Clipboard::setString(winrt::hstring content) noexcept {
   m_reactContext.UIDispatcher().Post([=] {
     DataTransfer::DataPackage data;
     data.SetText(content);

vnext/Microsoft.ReactNative/Modules/ClipboardModule.h

@@ -18,7 +18,7 @@ struct Clipboard {
   void getString(winrt::Microsoft::ReactNative::ReactPromise<std::string> result) noexcept;
 
   REACT_METHOD(setString)
-  void setString(std::wstring content) noexcept;
+  void setString(winrt::hstring content) noexcept;
 
   winrt::Microsoft::ReactNative::ReactContext m_reactContext;
 };