fix viewId type

Author: p-mazhnik

flutter_inappwebview_web/lib/web/js_bridge.dart

@@ -7,7 +7,7 @@ extension type JSSize._(JSObject _) implements JSObject {
 }
 
 extension type JSWebView._(JSObject _) implements JSObject {
-  external JSNumber get viewId;
+  external JSAny get viewId;
   external JSString get iframeId;
   external HTMLIFrameElement get iframe;
   external HTMLDivElement get iframeContainer;
@@ -43,7 +43,7 @@ external FlutterInAppWebViewBridge? get flutterInAppWebView;
 
 extension type FlutterInAppWebViewBridge._(JSObject _) implements JSObject {
   external JSObject webViews;
-  external JSWebView createFlutterInAppWebView(num viewId, HTMLIFrameElement iframe, HTMLDivElement iframeContainer);
+  external JSWebView createFlutterInAppWebView(JSAny viewId, HTMLIFrameElement iframe, HTMLDivElement iframeContainer);
   external JSString getCookieExpirationDate(num timestamp);
   /// Allows assigning a function to be callable from `window.flutter_inappwebview.nativeCommunication()`
   external JSFunction nativeCommunication;

flutter_inappwebview_web/lib/web/web_platform.dart

@@ -34,12 +34,12 @@ class InAppWebViewFlutterPlugin {
     // ignore: unused_local_variable
     final headlessManager = HeadlessInAppWebViewManager(messenger: registrar);
     flutterInAppWebView?.nativeCommunication = (
-      (String method, num viewId, [JSArray? args]) => _dartNativeCommunication(method, viewId, args?.toDart).toJS
+      (String method, JSAny viewId, [JSArray? args]) => _dartNativeCommunication(method, viewId, args?.toDart).toJS
     ).toJS;
   }
 }
 
-Future<JSAny?> _dartNativeCommunication(String method, num viewId,
+Future<JSAny?> _dartNativeCommunication(String method, dynamic viewId,
     [List? args]) async {
   if (WebPlatformManager.webViews.containsKey(viewId)) {
     var webViewHtmlElement =