/** 随机生成UA */
export declare function randUserAgent({ browser, os, device }: {
    browser?: string | undefined;
    os?: string | undefined;
    device?: string | undefined;
}): any;
/**
 * 获取md中的img url
 */
export declare function getMarkdownImageList(mdStr: string): string[];
export declare function removeEmojis(dirName: string): string;
export declare function isValidUrl(url: string): boolean;
export declare function formateDate(d: string): string;
export declare function isValidDate(date: Date): boolean;
export * from './log';
export * from './ProgressBar';