/**
 * Initialize the WebAssembly module
 *
 * @param options - Initialization options
 * @param options.wasmPath - Path to WASM files directory or .js file
 *                           NOTE: Only used in browser environments. Ignored in Node.js.
 *                           In Node.js, the package structure is fixed after npm install.
 * @param options.locateFile - Custom function to locate WASM binary files (advanced use)
 *                              Overrides the default Emscripten path resolution.
 *
 * @example
 * // Node.js - auto-initialization (no parameters needed):
 * await initialize();
 *
 * // Browser - simple path (recommended):
 * await initialize({ wasmPath: '/wasm' });
 *
 * // Browser - with CDN:
 * await initialize({
 *   wasmPath: 'https://cdn.jsdelivr.net/npm/texture2ddecoder-wasm@1.2.1/wasm'
 * });
 *
 * // Advanced - custom locateFile (both Node.js and Browser):
 * await initialize({
 *   locateFile: (path, scriptDirectory) => {
 *     // Custom logic to locate the .wasm binary
 *     return '/custom-path/' + path;
 *   }
 * });
 *
 * // Or auto-initialize on first decode call (Node.js only):
 * const result = await decode_bc1(data, width, height);
 */
export declare function initialize(options?: {
    wasmPath?: string;
    locateFile?: (path: string, prefix: string) => string;
}): Promise<void>;
/**
 * Decode BC1 (DXT1) compressed texture to BGRA
 */
export declare function decode_bc1(data: Uint8Array | ArrayBuffer, width: number, height: number): Promise<Uint8Array | null>;
/**
 * Decode BC3 (DXT5) compressed texture to BGRA
 */
export declare function decode_bc3(data: Uint8Array | ArrayBuffer, width: number, height: number): Promise<Uint8Array | null>;
/**
 * Decode BC4 compressed texture to BGRA
 */
export declare function decode_bc4(data: Uint8Array | ArrayBuffer, width: number, height: number): Promise<Uint8Array | null>;
/**
 * Decode BC5 compressed texture to BGRA
 */
export declare function decode_bc5(data: Uint8Array | ArrayBuffer, width: number, height: number): Promise<Uint8Array | null>;
/**
 * Decode BC6 compressed texture to BGRA
 */
export declare function decode_bc6(data: Uint8Array | ArrayBuffer, width: number, height: number): Promise<Uint8Array | null>;
/**
 * Decode BC7 compressed texture to BGRA
 */
export declare function decode_bc7(data: Uint8Array | ArrayBuffer, width: number, height: number): Promise<Uint8Array | null>;
/**
 * Decode PVRTC compressed texture to BGRA
 */
export declare function decode_pvrtc(data: Uint8Array | ArrayBuffer, width: number, height: number, is2bpp?: boolean): Promise<Uint8Array | null>;
/**
 * Decode ETC1 compressed texture to BGRA
 */
export declare function decode_etc1(data: Uint8Array | ArrayBuffer, width: number, height: number): Promise<Uint8Array | null>;
/**
 * Decode ETC2 compressed texture to BGRA
 */
export declare function decode_etc2(data: Uint8Array | ArrayBuffer, width: number, height: number): Promise<Uint8Array | null>;
/**
 * Decode ETC2 with 1-bit alpha compressed texture to BGRA
 */
export declare function decode_etc2a1(data: Uint8Array | ArrayBuffer, width: number, height: number): Promise<Uint8Array | null>;
/**
 * Decode ETC2 with 8-bit alpha compressed texture to BGRA
 */
export declare function decode_etc2a8(data: Uint8Array | ArrayBuffer, width: number, height: number): Promise<Uint8Array | null>;
/**
 * Decode EAC R11 compressed texture to BGRA
 */
export declare function decode_eacr(data: Uint8Array | ArrayBuffer, width: number, height: number): Promise<Uint8Array | null>;
/**
 * Decode EAC R11 signed compressed texture to BGRA
 */
export declare function decode_eacr_signed(data: Uint8Array | ArrayBuffer, width: number, height: number): Promise<Uint8Array | null>;
/**
 * Decode EAC RG11 compressed texture to BGRA
 */
export declare function decode_eacrg(data: Uint8Array | ArrayBuffer, width: number, height: number): Promise<Uint8Array | null>;
/**
 * Decode EAC RG11 signed compressed texture to BGRA
 */
export declare function decode_eacrg_signed(data: Uint8Array | ArrayBuffer, width: number, height: number): Promise<Uint8Array | null>;
/**
 * Decode ATC RGB4 compressed texture to BGRA
 */
export declare function decode_atc_rgb4(data: Uint8Array | ArrayBuffer, width: number, height: number): Promise<Uint8Array | null>;
/**
 * Decode ATC RGBA8 compressed texture to BGRA
 */
export declare function decode_atc_rgba8(data: Uint8Array | ArrayBuffer, width: number, height: number): Promise<Uint8Array | null>;
/**
 * Decode ASTC compressed texture to BGRA
 * @param blockWidth - Block width (typically 4, 5, 6, 8, 10, or 12)
 * @param blockHeight - Block height (typically 4, 5, 6, 8, 10, or 12)
 */
export declare function decode_astc(data: Uint8Array | ArrayBuffer, width: number, height: number, blockWidth: number, blockHeight: number): Promise<Uint8Array | null>;
/**
 * Unpack Crunch compressed data
 * Uses typed array for binary-safe data transfer
 */
export declare function unpack_crunch(data: Uint8Array | ArrayBuffer): Promise<Uint8Array | null>;
/**
 * Unpack Unity Crunch compressed data
 * Uses typed array for binary-safe data transfer
 */
export declare function unpack_unity_crunch(data: Uint8Array | ArrayBuffer): Promise<Uint8Array | null>;
declare const _default: {
    initialize: typeof initialize;
    decode_bc1: typeof decode_bc1;
    decode_bc3: typeof decode_bc3;
    decode_bc4: typeof decode_bc4;
    decode_bc5: typeof decode_bc5;
    decode_bc6: typeof decode_bc6;
    decode_bc7: typeof decode_bc7;
    decode_pvrtc: typeof decode_pvrtc;
    decode_etc1: typeof decode_etc1;
    decode_etc2: typeof decode_etc2;
    decode_etc2a1: typeof decode_etc2a1;
    decode_etc2a8: typeof decode_etc2a8;
    decode_eacr: typeof decode_eacr;
    decode_eacr_signed: typeof decode_eacr_signed;
    decode_eacrg: typeof decode_eacrg;
    decode_eacrg_signed: typeof decode_eacrg_signed;
    decode_atc_rgb4: typeof decode_atc_rgb4;
    decode_atc_rgba8: typeof decode_atc_rgba8;
    decode_astc: typeof decode_astc;
    unpack_crunch: typeof unpack_crunch;
    unpack_unity_crunch: typeof unpack_unity_crunch;
};
export default _default;
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