export declare const CURRENT_VERSION = 11;
export declare const HDC_SEED = 322420463;
/**
 * Morton Order calculation for spatial sorting
 */
export declare function getMorton(x: number, y: number): number;
/**
 * Packs 8-bit image data into 4-bit packed data
 */
export declare function pack4Bit(data: Uint8Array): Uint8Array;
/**
 * Unpacks 4-bit data back to 8-bit image data
 */
export declare function unpack4Bit(packed: Uint8Array, width: number, height: number): Uint8Array;
/**
 * Columnarizes point data for efficient storage and transfer
 */
export declare function columnarize(points: any[], tree: any, width: number, height: number, useHDC?: boolean): {
    x: Uint16Array<ArrayBuffer>;
    y: Uint16Array<ArrayBuffer>;
    a: Int16Array<ArrayBuffer>;
    s: Uint8Array<ArrayBuffer>;
    d: any;
    hdc: number;
    t: any;
};
/**
 * Columnarizes point data with COMPACT 32-bit descriptors (XOR folding)
 * Reduces descriptor storage by 50% with minimal accuracy loss
 */
export declare function columnarizeCompact(points: any[], tree: any, width: number, height: number): {
    x: Uint16Array<ArrayBuffer>;
    y: Uint16Array<ArrayBuffer>;
    a: Int16Array<ArrayBuffer>;
    s: Uint8Array<ArrayBuffer>;
    d: Uint32Array<ArrayBuffer>;
    compact: number;
    t: any;
};
/**
 * Compacts hierarchical clustering tree into a minimal array structure
 */
export declare function compactTree(node: any): any;
/**
 * Expands a compacted tree back into an object structure
 */
export declare function expandTree(node: any): any;
/**
 * Deserializes and normalizes .taar data from a buffer
 */
export declare function decodeTaar(buffer: ArrayBuffer | Uint8Array): {
    version: any;
    dataList: any;
};
/**
 * Serializes target data into a .taar binary buffer
 */
export declare function encodeTaar(dataList: any[]): Uint8Array<ArrayBuffer>;