diff --git a/native/navigation/options.js b/native/navigation/options.js
--- a/native/navigation/options.js
+++ b/native/navigation/options.js
@@ -1,6 +1,12 @@
 // @flow
 
-import type { StackOptions } from '@react-navigation/core';
+import type {
+  StackOptions,
+  StackCardInterpolationProps,
+  TransitionPreset,
+  StackCardInterpolatedStyle,
+} from '@react-navigation/core';
+import { TransitionPresets } from '@react-navigation/stack';
 import { Platform } from 'react-native';
 
 const defaultStackScreenOptions: StackOptions = {
@@ -11,4 +17,30 @@
     Platform.OS !== 'macos',
 };
 
-export { defaultStackScreenOptions };
+const baseTransitionPreset: TransitionPreset = Platform.select({
+  ios: TransitionPresets.ModalSlideFromBottomIOS,
+  default: TransitionPresets.FadeFromBottomAndroid,
+});
+const transitionPreset = {
+  ...baseTransitionPreset,
+  cardStyleInterpolator: (
+    interpolatorProps: StackCardInterpolationProps,
+  ): StackCardInterpolatedStyle => {
+    const baseCardStyleInterpolator =
+      baseTransitionPreset.cardStyleInterpolator(interpolatorProps);
+    const overlayOpacity = interpolatorProps.current.progress.interpolate({
+      inputRange: [0, 1],
+      outputRange: ([0, 0.7]: number[]), // Flow...
+      extrapolate: 'clamp',
+    });
+    return {
+      ...baseCardStyleInterpolator,
+      overlayStyle: [
+        baseCardStyleInterpolator.overlayStyle,
+        { opacity: overlayOpacity },
+      ],
+    };
+  },
+};
+
+export { defaultStackScreenOptions, transitionPreset };
diff --git a/native/navigation/root-navigator.react.js b/native/navigation/root-navigator.react.js
--- a/native/navigation/root-navigator.react.js
+++ b/native/navigation/root-navigator.react.js
@@ -11,21 +11,19 @@
   StackNavigationProp,
   StackRouterOptions,
   RouteProp,
-  StackCardInterpolationProps,
-  TransitionPreset,
 } from '@react-navigation/core';
 import {
   createNavigatorFactory,
   useNavigationBuilder,
 } from '@react-navigation/native';
-import { StackView, TransitionPresets } from '@react-navigation/stack';
+import { StackView } from '@react-navigation/stack';
 import * as React from 'react';
 import { Platform } from 'react-native';
 import { enableScreens } from 'react-native-screens';
 
 import AppNavigator from './app-navigator.react.js';
 import InviteLinkModal from './invite-link-modal.react.js';
-import { defaultStackScreenOptions } from './options.js';
+import { defaultStackScreenOptions, transitionPreset } from './options.js';
 import { RootNavigatorContext } from './root-navigator-context.js';
 import RootRouter, {
   type RootRouterExtraNavigationHelpers,
@@ -152,30 +150,6 @@
   ExtraStackNavigatorProps,
 >(RootNavigator);
 
-const baseTransitionPreset: TransitionPreset = Platform.select({
-  ios: TransitionPresets.ModalSlideFromBottomIOS,
-  default: TransitionPresets.FadeFromBottomAndroid,
-});
-const transitionPreset = {
-  ...baseTransitionPreset,
-  cardStyleInterpolator: (interpolatorProps: StackCardInterpolationProps) => {
-    const baseCardStyleInterpolator =
-      baseTransitionPreset.cardStyleInterpolator(interpolatorProps);
-    const overlayOpacity = interpolatorProps.current.progress.interpolate({
-      inputRange: [0, 1],
-      outputRange: ([0, 0.7]: number[]), // Flow...
-      extrapolate: 'clamp',
-    });
-    return {
-      ...baseCardStyleInterpolator,
-      overlayStyle: [
-        baseCardStyleInterpolator.overlayStyle,
-        { opacity: overlayOpacity },
-      ],
-    };
-  },
-};
-
 const defaultScreenOptions = {
   ...defaultStackScreenOptions,
   ...transitionPreset,