/**
 * Utility Url Replacer
 * @param path
 */
export declare const urlReplacer: (path: string) => (params: object) => any;
/**
 * Get domain
 * @param url
 */
export declare const getDomain: (url: string) => string;
/**
 * Check a str is a valid url pattern
 * @param url
 */
export declare const isValidUrl: (url: string) => boolean;
/**
 * Check a str is a valid list of urls separated by delimiter
 * @param value
 * @param delimiter
 */
export declare const isValidUrls: (value: string, delimiter: string) => boolean;
/**
 * Append params
 * @param baseUrl
 * @param queryParams
 */
export declare function appendURLSearchParams(baseUrl: string, queryParams: Record<string, string | number>[]): string;
/**
 * Take the application server's public key, which is Base64 URL-safe encoded,
 * and convert it to a UInt8Array, because this is the expected input of the subscribe()
 */
export declare const urlB64ToUint8Array: (base64String: any) => Uint8Array;
/**
 * Get a query string parameter
 */
export declare const getQueryStringParameter: (uri: any, key: any) => string;
/**
 * Add or update a query string parameter
 */
export declare const updateQueryStringParameter: (uri: any, key: any, value: any) => any;