/**
 * Read compressed weight streams for Huffman tree description.
 * Weights can be FSE-compressed or direct (4 bits per weight).
 */
/**
 * Read Huffman weights from direct representation (headerByte >= 128).
 * Each weight is 4 bits, 2 per byte, first weight in high nibble.
 */
export declare function readWeightsDirect(data: Uint8Array, offset: number, numWeights: number): {
    weights: number[];
    bytesRead: number;
};
/**
 * Read Huffman weights from FSE-compressed stream.
 * Uses 2 interleaved FSE states decoding weight symbols (0-11).
 */
export declare function readWeightsFSE(data: Uint8Array, offset: number, compressedSize: number): {
    weights: number[];
    bytesRead: number;
};