stub out non-web dependencies

packages/stack/src/utils/MaskedViewStub.ts

@@ -0,0 +1,7 @@
+import { UIManager } from 'react-native';
+
+export { default } from '@react-native-community/masked-view';
+
+export const isMaskedViewAvailable =
+  // @ts-ignore
+  UIManager.getViewManagerConfig('RNCMaskedView') != null;

packages/stack/src/utils/MaskedViewStub.web.ts

@@ -0,0 +1,3 @@
+//
+export default () => null;
+export const isMaskedViewAvailable = false;

packages/stack/src/utils/getStatusBarHeightStub.ts

@@ -0,0 +1,7 @@
+import { Platform } from 'react-native';
+import { getStatusBarHeight as getStatusBarHeightNative } from 'react-native-safe-area-view';
+
+export const getStatusBarHeight = Platform.select({
+  default: getStatusBarHeightNative,
+  web: () => 0,
+});

packages/stack/src/views/Header/HeaderBackButton.tsx

@@ -6,17 +6,12 @@ import {
   Platform,
   StyleSheet,
   LayoutChangeEvent,
-  UIManager,
 } from 'react-native';
 import Animated from 'react-native-reanimated';
-import MaskedView from '@react-native-community/masked-view';
+import MaskedView, { isMaskedViewAvailable } from '../../utils/MaskedViewStub';
 import TouchableItem from '../TouchableItem';
 import { HeaderLeftButtonProps } from '../../types';
 
-const isMaskedViewAvailable =
-  // @ts-ignore
-  UIManager.getViewManagerConfig('RNCMaskedView') != null;
-
 type Props = HeaderLeftButtonProps & {
   tintColor: string;
 };