Add support for iOS-specific prop `limitsNavigationsToAppBoundDomains`

apple/RNCWebView.h

@@ -70,6 +70,10 @@
 @property (nonatomic, assign) WKContentMode contentMode;
 #endif
 
+#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 140000 /* iOS 14 */
+@property (nonatomic, assign) BOOL limitsNavigationsToAppBoundDomains;
+#endif
+
 + (void)setClientAuthenticationCredential:(nullable NSURLCredential*)credential;
 + (void)setCustomCertificatesForHost:(nullable NSDictionary *)certificates;
 - (void)postMessage:(NSString *_Nullable)message;

apple/RNCWebView.m

@@ -235,6 +235,14 @@ static NSDictionary* customCertificatesForHost;
   }
 #endif
 
+#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 140000 /* iOS 14 */
+  if (@available(iOS 14.0, *)) {
+    if (_limitsNavigationsToAppBoundDomains) {
+      wkWebViewConfig.limitsNavigationsToAppBoundDomains = YES;
+    }
+  }
+#endif
+
   // Shim the HTML5 history API:
   [wkWebViewConfig.userContentController addScriptMessageHandler:[[RNCWeakScriptMessageDelegate alloc] initWithDelegate:self]
                                                             name:HistoryShimName];

apple/RNCWebViewManager.m

@@ -85,6 +85,10 @@ RCT_EXPORT_VIEW_PROPERTY(contentInsetAdjustmentBehavior, UIScrollViewContentInse
 RCT_EXPORT_VIEW_PROPERTY(contentMode, WKContentMode)
 #endif
 
+#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 140000 /* iOS 14 */
+RCT_EXPORT_VIEW_PROPERTY(limitsNavigationsToAppBoundDomains, BOOL)
+#endif
+
 /**
  * Expose methods to enable messaging the webview.
  */

src/WebViewTypes.ts

@@ -327,6 +327,7 @@ export interface IOSNativeWebViewProps extends CommonNativeWebViewProps {
   injectedJavaScriptForMainFrameOnly?: boolean;
   injectedJavaScriptBeforeContentLoadedForMainFrameOnly?: boolean;
   onFileDownload?: (event: FileDownloadEvent) => void;
+  limitsNavigationsToAppBoundDomains?: boolean;
 }
 
 export interface MacOSNativeWebViewProps extends CommonNativeWebViewProps {
@@ -583,6 +584,17 @@ export interface IOSWebViewProps extends WebViewSharedProps {
    * If not provided, the default is to let the webview try to render the file.
    */
   onFileDownload?: (event: FileDownloadEvent) => void;
+
+  /**
+   * A Boolean value which, when set to `true`, indicates to WebKit that a WKWebView
+   * will only navigate to app-bound domains. Once set, any attempt to navigate away
+   * from an app-bound domain will fail with the error: “App-bound domain failure.”
+   * 
+   * Applications can specify up to 10 “app-bound” domains using a new
+   * Info.plist key — `WKAppBoundDomains`.
+   * @platform ios
+   */
+  limitsNavigationsToAppBoundDomains?: boolean;
 }
 
 export interface MacOSWebViewProps extends WebViewSharedProps {