old_contents: /**
   * https://github.com/facebook/react-native/blob/master/Libraries/StyleSheet/StyleSheet.js
   */
  const StyleSheet = {
    create(styles) {
      return styles;
    },
  };
  
  module.exports = StyleSheet;
  
new_contents: /**
   * https://github.com/facebook/react-native/blob/master/Libraries/StyleSheet/StyleSheet.js
   */
  const StyleSheet = {
    create(styles) {
      return styles;
    },
    flatten(styles) {
      return styles;
    }
  };
  
  module.exports = StyleSheet;
  
subject: Add StyleSheet.flatten