Revert breaking changes

lib/react.dart

@@ -30,7 +30,7 @@ export 'package:react/src/react_client/synthetic_data_transfer.dart' show Synthe
 /// See <https://reactjs.org/docs/components-and-props.html#function-and-class-components>.
 ///
 /// [props] is typed as [JsBackedMap] so that dart2js can optimize props accesses.
-typedef DartFunctionComponent = ReactNode Function(JsBackedMap props);
+typedef DartFunctionComponent = /*ReactNode*/ dynamic Function(JsBackedMap props);
 
 /// The callback to a React forwardRef component. See [forwardRef2] for more details.
 ///
@@ -39,7 +39,7 @@ typedef DartFunctionComponent = ReactNode Function(JsBackedMap props);
 /// In the current JS implementation, the ref argument to [React.forwardRef] is usually a JsRef object no matter the input ref type,
 /// but according to React the ref argument can be any ref type: https://github.com/facebook/flow/blob/master@%7B2020-09-08%7D/lib/react.js#L305
 /// and not just a ref object, so we type [ref] as dynamic here.
-typedef DartForwardRefFunctionComponent = ReactNode Function(JsBackedMap props, dynamic ref);
+typedef DartForwardRefFunctionComponent = /*ReactNode*/ dynamic Function(JsBackedMap props, dynamic ref);
 
 typedef ComponentFactory<T extends Component> = T Function();
 
@@ -545,7 +545,7 @@ abstract class Component {
   /// When called, it should examine [props] and [state] and return a [ReactNode].
   ///
   /// See: <https://legacy.reactjs.org/docs/react-component.html#render>
-  ReactNode render();
+  /*ReactNode*/ dynamic render();
 }
 
 /// Top-level ReactJS [Component class](https://reactjs.org/docs/react-component.html)
@@ -943,7 +943,7 @@ abstract class Component2 implements Component {
   ///
   /// See: <https://legacy.reactjs.org/docs/react-component.html#render>
   @override
-  ReactNode render();
+  /*ReactNode*/ dynamic render();
 
   // ******************************************************************************************************************
   //

lib/react_client/react_interop.dart

@@ -276,7 +276,7 @@ ReactComponentFactoryProxy memo2(ReactComponentFactoryProxy factory,
 
 abstract class ReactDom {
   static Element? findDOMNode(ReactNode object) => ReactDOM.findDOMNode(object);
-  static ReactNode render(ReactNode component, Element element) => ReactDOM.render(component, element);
+  static dynamic render(ReactNode component, Element element) => ReactDOM.render(component, element);
   static bool unmountComponentAtNode(Element element) => ReactDOM.unmountComponentAtNode(element);
 
   /// Returns a a portal that renders [children] into a [container].
@@ -480,7 +480,7 @@ class ReactElement {
 @JS()
 @anonymous
 class ReactPortal {
-  external ReactNode get children;
+  external dynamic /* ReactNodeList */ get children;
   external dynamic get containerInfo;
 }
 

lib/src/react_client/dart2_interop_workaround_bindings.dart

@@ -10,7 +10,7 @@ import 'package:react/src/typedefs.dart';
 @JS()
 abstract class ReactDOM {
   external static Element? findDOMNode(ReactNode object);
-  external static ReactNode render(ReactNode component, Element element);
+  external static dynamic render(ReactNode component, Element element);
   external static bool unmountComponentAtNode(Element element);
   external static ReactPortal createPortal(ReactNode children, Element container);
 }

lib/src/typedefs.dart

@@ -13,9 +13,9 @@ typedef CallbackRef<T> = Function(T? componentOrDomNode);
 /// - [props] will always be supplied as the first argument
 /// - [legacyContext] has been deprecated and should not be used but remains for backward compatibility and is necessary
 /// to match Dart's generated call signature based on the number of args React provides.
-typedef JsFunctionComponent = ReactNode Function(JsMap props, [JsMap? legacyContext]);
+typedef JsFunctionComponent = /*ReactNode*/ dynamic Function(JsMap props, [JsMap? legacyContext]);
 
-typedef JsForwardRefFunctionComponent = ReactNode Function(JsMap props, dynamic ref);
+typedef JsForwardRefFunctionComponent = /*ReactNode*/ dynamic Function(JsMap props, dynamic ref);
 
 /// Typedef for `react.Component.ref`, which should return one of the following specified by the provided [ref]:
 ///

test/forward_ref_test.dart

@@ -30,9 +30,7 @@ main() {
 
     group('sets name on the rendered component as expected', () {
       test('unless the displayName argument is not passed to forwardRef2', () {
-        final ForwardRefTestComponent = forwardRef2((props, ref) {
-          return null;
-        });
+        final ForwardRefTestComponent = forwardRef2((props, ref) {});
         expect(getProperty(getProperty(ForwardRefTestComponent.type as Object, 'render'), 'name'), anyOf('', isNull));
       });