/**
 * Checksums required by the FLAC bitstream.
 *
 * FLAC is unusually thorough about integrity: every frame header carries a
 * CRC-8, every frame a CRC-16, and STREAMINFO holds an MD5 of the *unencoded*
 * samples. That last one is why `flac -t` can prove a file decodes back to
 * exactly what went in — a guarantee worth preserving, so audiobox computes it
 * rather than writing the all-zero "not computed" placeholder the spec permits.
 */
export declare function crc8(data: Uint8Array, start?: number, end?: number): number;
export declare function crc16(data: Uint8Array, start?: number, end?: number): number;
/** Streaming MD5, so the encoder can hash samples as it writes frames. */
export declare class Md5 {
    #private;
    update(data: Uint8Array): void;
    digest(): Uint8Array;
}