/**
 * Web Streams API for WASM XZ compression/decompression.
 *
 * Returns standard Web TransformStream instances (not Node.js streams).
 * Use `.pipeThrough()` instead of `.pipe()`.
 */
import type { LZMAOptions } from '../types.js';
/**
 * Create a Web TransformStream that compresses data to XZ format.
 *
 * @param opts - Compression options (preset, check)
 * @returns A TransformStream<Uint8Array, Uint8Array>
 *
 * @example
 * ```ts
 * const compressed = await new Response(
 *   readableStream.pipeThrough(createXz())
 * ).arrayBuffer();
 * ```
 */
export declare function createXz(opts?: LZMAOptions): TransformStream<Uint8Array, Uint8Array>;
/**
 * Create a Web TransformStream that decompresses XZ data.
 *
 * @returns A TransformStream<Uint8Array, Uint8Array>
 *
 * @example
 * ```ts
 * const decompressed = await new Response(
 *   xzStream.pipeThrough(createUnxz())
 * ).arrayBuffer();
 * ```
 */
export declare function createUnxz(): TransformStream<Uint8Array, Uint8Array>;
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