Store bridge as instance variable

windows/ReactNativeWebView/ReactWebView.cpp

 #include "ReactWebView.h"
 #include "ReactWebView.g.cpp"
 
-#include "winrt/WebViewBridge.h"
-
 
 
 namespace winrt {
 
         if (m_messagingEnabled) {
           auto tag = this->GetValue(winrt::FrameworkElement::TagProperty()).as<winrt::IPropertyValue>().GetInt64();
-
-          auto bridge = WebViewBridge::WebBridge(tag);
-          bridge.MessagePostedEvent(winrt::auto_revoke, [ref = get_weak()](const int32_t& message) {
+          m_webBridge = WebViewBridge::WebBridge(tag);
+          m_webBridge.MessagePostedEvent(winrt::auto_revoke, [ref = get_weak()](const int32_t& message) {
             if (auto self = ref.get()) {
               self->OnMessagePosted(message);
             }
           });
-
-          webView.AddWebAllowedObject(L"__RN_WEBVIEW_JS_BRIDGE", bridge);
+          webView.AddWebAllowedObject(L"__RN_WEBVIEW_JS_BRIDGE", m_webBridge);
         }
     }
 
     void ReactWebView::OnMessagePosted(const int32_t& message)
     {
-
+      // TODO: send to RN
     }
 
     void ReactWebView::OnNavigationCompleted(winrt::WebView const& webView, winrt::WebViewNavigationCompletedEventArgs const& /*args*/) {

windows/ReactNativeWebView/ReactWebView.h

 #include "NativeModules.h"
 #include "ReactWebView.g.h"
 
+#include "winrt/WebViewBridge.h"
+
 namespace winrt::ReactNativeWebView::implementation {
 
     class ReactWebView : public ReactWebViewT<ReactWebView> {
         bool m_messagingEnabled{ false };
         winrt::Windows::UI::Xaml::Controls::WebView m_webView{ nullptr };
         Microsoft::ReactNative::IReactContext m_reactContext{ nullptr };
+        WebViewBridge::WebBridge m_webBridge{ nullptr };
         winrt::Windows::UI::Xaml::Controls::WebView::NavigationStarting_revoker m_navigationStartingRevoker{};
         winrt::Windows::UI::Xaml::Controls::WebView::NavigationCompleted_revoker m_navigationCompletedRevoker{};
         winrt::Windows::UI::Xaml::Controls::WebView::NavigationFailed_revoker m_navigationFailedRevoker{};