/**
 * Compresses and base64-encodes a string using the specified compression format.
 * @param input The string to compress and encode
 * @param format The compression format to use (default: gzip)
 * @returns The compressed and encoded data as a base64 string
 */
export declare function compressAndEncode(input: string, format?: CompressionFormat): Promise<string>;
/**
 * Decodes and decompresses a base64-encoded string.
 * @param input The compressed and base64-encoded data
 * @param format The compression format to use (default: gzip)
 * @returns The decompressed data as a string
 */
export declare function decodeAndDecompress(input: string, format?: CompressionFormat): Promise<string>;