NativeScript utility: isIPhoneX detection

platform.ts

import { isIOS } from 'tns-core-modules/platform';

let iPhoneX;

export function isIPhoneX() {
    if (isIOS) {
      if (typeof iPhoneX === 'undefined') {
        const _SYS_NAMELEN: number = 256;
  
        const buffer: any = interop.alloc(5 * _SYS_NAMELEN);
        uname(buffer);
        let name: string = NSString.stringWithUTF8String(
          buffer.add(_SYS_NAMELEN * 4)
        ).toString();
  
        // Get machine name for Simulator
        if (name === 'x86_64' || name === 'i386') {
          name = NSProcessInfo.processInfo.environment.objectForKey(
            'SIMULATOR_MODEL_IDENTIFIER'
          );
        }
  
        // console.log('isIPhoneX name:', name);
        iPhoneX = name.indexOf('iPhone10,3') === 0 || name.indexOf('iPhone10,6') === 0;
      }
      return iPhoneX;
    }
    return false;
  }