vant/src-next/utils/validate/system.ts

import { isServer } from '..';

export function isAndroid(): boolean {
  /* istanbul ignore next */
  return isServer ? false : /android/.test(navigator.userAgent.toLowerCase());
}

export function isIOS(): boolean {
  /* istanbul ignore next */
  return isServer
    ? false
    : /ios|iphone|ipad|ipod/.test(navigator.userAgent.toLowerCase());
}