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components/default/navigation/TabBarIcon.tsx

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+// You can explore the built-in icon families and icons on the web at https://icons.expo.fyi/
+
+import Ionicons from '@expo/vector-icons/Ionicons';
+import { type IconProps } from '@expo/vector-icons/build/createIconSet';
+import { type ComponentProps } from 'react';
+
+export function TabBarIcon({ style, ...rest }: IconProps<ComponentProps<typeof Ionicons>['name']>) {
+  return <Ionicons size={28} style={[{ marginBottom: -3 }, style]} {...rest} />;
+}