/// <reference types="node" />
/// <reference types="node" />
import { HashInput, IBaseHashOptions, IHasher, IHashReader } from '@c4312/blake3-internal';
import { Transform, TransformCallback } from 'stream';
export declare const createHash: () => NodeHash;
export declare const createKeyed: (key: HashInput) => NodeHash;
export declare const createDeriveKey: (material: HashInput) => NodeHash;
/**
 * @inheritdoc
 */
export declare class NodeHash extends Transform implements IHasher<Buffer> {
    private readonly hash;
    constructor(hash: {
        update(data: Uint8Array): void;
        digest(length?: number): Buffer;
        reader(): IHashReader<Buffer>;
    });
    /**
     * @reader
     */
    reader(): IHashReader<Buffer>;
    /**
     * @inheritdoc
     */
    update(data: HashInput, encoding?: BufferEncoding): this;
    /**
     * @inheritdoc
     */
    dispose(): void;
    /**
     * @inheritdoc
     */
    digest(encoding?: IBaseHashOptions): Buffer;
    digest(encoding: undefined, options: IBaseHashOptions): Buffer;
    digest(encoding: BufferEncoding, options?: IBaseHashOptions): string;
    /**
     * @inheritdoc
     * @hidden
     */
    _transform(chunk: Buffer | string, encoding: string, callback: TransformCallback): void;
    /**
     * @inheritdoc
     * @hidden
     */
    _flush(callback: TransformCallback): void;
}