/**
 * WASM utility functions for browser usage.
 *
 * Provides isXZ, versionString, versionNumber, parseFileIndex
 * matching the Node.js API signatures.
 */
import type { XZFileIndex } from '../types.js';
import { checkIsSupported } from './bindings.js';
/**
 * Check if a buffer contains XZ compressed data.
 *
 * @param buffer - Data to check
 * @returns true if the buffer starts with the XZ magic bytes
 */
export declare function isXZ(buffer: Uint8Array | ArrayBuffer): boolean;
/**
 * Get the liblzma version string (e.g. "5.6.3").
 */
export declare function versionString(): string;
/**
 * Get the liblzma version as a number (e.g. 50060030 for 5.6.3).
 */
export declare function versionNumber(): number;
/**
 * Get memory usage estimate for the easy encoder with given preset.
 *
 * Note: In WASM, this is approximated based on preset level.
 * Presets 7-9 require significantly more memory at runtime than reported here
 * and may exceed the default WASM memory limit (256MB).
 */
export declare function easyEncoderMemusage(preset: number): number;
/**
 * Get memory usage estimate for the easy decoder.
 */
export declare function easyDecoderMemusage(): number;
export type { XZFileIndex } from '../types.js';
/**
 * Parse the index of an XZ file to extract metadata.
 * Parses the XZ footer and the index section to extract real
 * uncompressed size, block count, and integrity check type.
 *
 * @param buffer - Complete XZ file data
 * @returns File index information
 */
export declare function parseFileIndex(buffer: Uint8Array | ArrayBuffer): XZFileIndex;
export { checkIsSupported };
/** Convert various input types to Uint8Array */
export declare function toUint8Array(input: Uint8Array | ArrayBuffer | string): Uint8Array;
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