export interface CompressionResult {
    data: ArrayBuffer;
    algorithm: string | undefined;
}
/**
 * Returns the current compression algorithms version string.
 * This version is bumped whenever the set of tried algorithms changes.
 */
export declare function getCompressionVersion(): string;
/**
 * Attempts to compress the given data using available compression algorithms, picking the best result.
 * If any of the provided UTIs indicates the data is already in a compressed format (jpeg, png, zip, ...),
 * compression is skipped entirely.
 *
 * @param data the raw data to compress.
 * @param utis optional UTIs describing the data format; used to skip compression for already-compressed formats.
 * @returns the (possibly compressed) data and the algorithm used, or undefined if no compression was applied.
 */
export declare function compressData(data: ArrayBuffer | Uint8Array, utis?: string[]): Promise<CompressionResult>;
/**
 * Decompresses data that was compressed using one of the supported algorithms.
 *
 * @param data the compressed data.
 * @param algorithm the compression algorithm that was used (e.g. 'lzma'). If undefined, returns the data as-is.
 * @returns the decompressed data.
 * @throws if the algorithm is not supported or decompression fails.
 */
export declare function decompressData(data: ArrayBuffer | Uint8Array, algorithm: string | undefined): Promise<ArrayBuffer>;