import UAParser from 'ua-parser-js';
export declare function isiOS(userAgent: string): boolean;
export declare function isiOSSafari(userAgent: string): boolean;
export declare function isAndroid(userAgent: string): boolean;
export declare type MobileOS = 'ios' | 'android';
export declare function getMobileOS(userAgent: string): MobileOS | null;
export declare function getUserAgent(userAgent?: string): UAParser.IResult | null;