import type { Compression } from './interfaces.js';
/**
 * Decompresses a buffer using the specified compression algorithm. Currently supports 'br' for Brotli and 'gzip' for GZIP.
 * If the specified algorithm is not supported, the function resolves the promise with the original buffer.
 *
 * @param {Buffer} buffer - The buffer to be decompressed.
 * @param {Compression} compression - The compression algorithm to use. Supported values are 'br' for Brotli and 'gzip' for GZIP.
 * @returns {Promise<Buffer>} A promise that, when resolved, provides the decompressed buffer. If the compression type is not recognized,
 * the promise will resolve with the original buffer. If decompression fails, the promise will be rejected with an error message.
 * @throws {Error} Throws an error if the decompression process encounters an error. The error includes the buffer's length and
 * the compression algorithm that was attempted.
 */
export declare function decompress(buffer: Buffer, compression: Compression): Promise<Buffer>;