/*! Copyright 2025 the gnablib contributors MPL-1.1 */
import { U64Mut } from '../primitive/number/U64.js';
import { _AHashsum } from './_AHashsum.js';
export declare abstract class AHashsum64 extends _AHashsum {
    protected _ingestBytes: U64Mut;
    write(data: Uint8Array): void;
}