message: Rewrite getClassName helper
diff: -import { platform, ANDROID, IOS } from '../lib/platform.js';
  +import { IS_PLATFORM_IOS, IS_PLATFORM_ANDROID } from '../lib/platform.js';
  import classNames from '../lib/classNames';
  -const osname = platform();
  -
  export default function getClassname (base) {
  return classNames(base, {
  - [base + '--ios']: osname === IOS,
  - [base + '--android']: osname === ANDROID
  + [base + '--ios']: IS_PLATFORM_IOS,
  + [base + '--android']: IS_PLATFORM_ANDROID
  });
  }
  