text: // @flow
  
  import { Dimensions } from 'react-native';
  
  import Platform from './Platform';
  
  const IPHONEX_HEIGHT = 812;
  const IPHONEX_WIDTH = 375;
  const IPHONE_OFFSET = 20;
  const IPHONEX_OFFSET = 44;
  
  /**
   * Determines the offset to be used for the device. This uses a custom
   * implementation to minimize empty area around screen, especially on iPhone X.
   *
   * @returns {number}
   */
  export function getSafetyOffset() {
      if (Platform.OS === 'android') {
          // Android doesn't need offset, except the Essential phone. Should be
          // addressed later with a generic solution.
          return 0;
      }
  
      return isIPhoneX() ? IPHONEX_OFFSET : IPHONE_OFFSET;
  }
  
  /**
   * Determines if the device is an iPad or not.
   *
   * @returns {boolean}
   */
  export function isIPad() {
      const { height, width } = Dimensions.get('window');
  
      return (
          Platform.OS === 'ios'
              && (Math.max(height, width) / Math.min(height, width)) < 1.6);
  }
  
  /**
   * Determines if it's an iPhone X or not.
   *
   * @returns {boolean}
   */
  export function isIPhoneX() {
      const { height, width } = Dimensions.get('window');
  
      return (
          Platform.OS === 'ios'
              && ((height === IPHONEX_HEIGHT && width === IPHONEX_WIDTH)
                  || (height === IPHONEX_WIDTH && width === IPHONEX_HEIGHT)));
  }
  