move textTransformer

Author: vonovak

src/HeaderButtons.js

@@ -4,9 +4,12 @@
 import * as React from 'react';
 import { HeaderButton, type HeaderButtonProps } from './HeaderButton';
 import { StyleSheet, Platform, View, Text } from 'react-native';
-import { OverflowButton, textTransformer, type OverflowButtonProps } from './OverflowButton';
+import { OverflowButton, type OverflowButtonProps } from './OverflowButton';
 import type { StyleObj } from 'react-native/Libraries/StyleSheet/StyleSheetTypes';
 
+const textTransformer = (label: string) =>
+  IS_IOS ? label.charAt(0).toUpperCase() + label.substr(1) : label.toUpperCase();
+
 type ItemProps = {
   title: string,
   show: string,

src/OverflowButton.js

@@ -15,9 +15,6 @@ import type { StyleObj } from 'react-native/Libraries/StyleSheet/StyleSheetTypes
 
 const IS_IOS = Platform.OS === 'ios';
 
-export const textTransformer = (label: string) =>
-  IS_IOS ? label.charAt(0).toUpperCase() + label.substr(1) : label.toUpperCase();
-
 export type OverflowButtonProps = {
   OverflowIcon?: React.Element<*>,
   cancelButtonLabel: string,