Disable module headers for RNFB

Author: wm-raajvamsy

templates/ios-build-patch/podFIlePostInstall.js

@@ -26,6 +26,45 @@ const newPostInstallBlock =
       end
     end
   end
+
+  # Fix for React Native Firebase when using static frameworks
+  # ROOT CAUSE: Static frameworks with modules enabled create strict module boundaries.
+  # When RNFBMessaging imports <RNFBApp/...>, the module system expects ALL types to be
+  # visible through RNFBApp's module exports. But RCTPromiseRejectBlock is in React-Core,
+  # and RNFBApp doesn't re-export it. The module system blocks access even if headers exist.
+  # 
+  # SOLUTION: Disable modules for RNFB targets entirely. This makes the compiler use
+  # traditional #import header inclusion instead of strict module boundaries.
+  installer.pods_project.targets.each do |target|
+    if target.name.start_with?('RNFB')
+      target.build_configurations.each do |config|
+        # DISABLE modules - this is the key fix
+        # Without modules, the compiler uses traditional header inclusion and can find
+        # React-Core types through the header search paths
+        config.build_settings['CLANG_ENABLE_MODULES'] = 'NO'
+        
+        # Ensure header maps are enabled so headers can be found
+        config.build_settings['USE_HEADERMAP'] = 'YES'
+        
+        # Add React-Core headers to search paths so they can be found via #import
+        header_search_paths = config.build_settings['HEADER_SEARCH_PATHS'] || '$(inherited)'
+        react_core_path = File.join(installer.sandbox.root, 'Headers', 'Public', 'React-Core')
+        react_core_path_quoted = '"' + react_core_path + '"'
+        if header_search_paths.is_a?(Array)
+          unless header_search_paths.any? { |path| path.include?('React-Core') }
+            header_search_paths << react_core_path_quoted
+          end
+        elsif header_search_paths.is_a?(String)
+          unless header_search_paths.include?('React-Core')
+            config.build_settings['HEADER_SEARCH_PATHS'] = [header_search_paths, react_core_path_quoted]
+          end
+        else
+          config.build_settings['HEADER_SEARCH_PATHS'] = ['$(inherited)', react_core_path_quoted]
+        end
+      end
+    end
+  end
+
 end`;
 
 module.exports = {