fix: add NavigationEvents

See https://github.com/react-navigation/react-navigation/issues/6821#issuecomment-588268512

packages/compat/src/NavigationEvents.tsx

@@ -0,0 +1,45 @@
+import * as React from 'react';
+import { useNavigation } from '@react-navigation/native';
+
+type Props = {
+  onWillFocus?: () => void;
+  onDidFocus?: () => void;
+  onWillBlur?: () => void;
+  onDidBlur?: () => void;
+};
+
+export default function NavigationEvents(props: Props) {
+  const navigation = useNavigation();
+  const propsRef = React.useRef(props);
+
+  React.useEffect(() => {
+    propsRef.current = props;
+  });
+
+  React.useEffect(() => {
+    const unsubFocus = navigation.addListener('focus', () => {
+      propsRef.current.onWillFocus?.();
+    });
+
+    const unsubBlur = navigation.addListener('blur', () => {
+      propsRef.current.onWillBlur?.();
+    });
+
+    // @ts-ignore
+    const unsubTransitionEnd = navigation.addListener('transitionEnd', () => {
+      if (navigation.isFocused()) {
+        propsRef.current.onDidFocus?.();
+      } else {
+        propsRef.current.onDidBlur?.();
+      }
+    });
+
+    return () => {
+      unsubFocus();
+      unsubBlur();
+      unsubTransitionEnd();
+    };
+  }, [navigation]);
+
+  return null;
+}

packages/compat/src/index.tsx

@@ -14,4 +14,6 @@ export { default as createSwitchNavigator } from './createSwitchNavigator';
 export { default as withNavigation } from './withNavigation';
 export { default as withNavigationFocus } from './withNavigationFocus';
 
+export { default as NavigationEvents } from './NavigationEvents';
+
 export * from './types';