interface UrlOptions {
    emptyProtocol?: boolean;
    protocolIdentifier?: boolean;
    basicAuth?: boolean;
    local?: boolean;
    ipv4?: boolean;
    ipv6?: boolean;
    host?: boolean;
    port?: boolean;
    path?: boolean;
    search?: boolean;
    hash?: boolean;
    protocol?: string | string[];
    protocols?: string | string[];
}
declare let url: (options?: UrlOptions) => RegExp;
export default url;