import { BlockHash, Header, Metadata } from '@dedot/codecs';
import { HashFn } from '@dedot/utils';
/**
 * Detects the hasher from V16 metadata by looking at the System pallet's Hashing associated type
 *
 * @param metadata - The metadata to inspect
 * @returns The detected HashFn or undefined if detection fails
 */
export declare function detectHasherFromMetadata(metadata: Metadata): HashFn | undefined;
/**
 * Detects the hasher by trying different hash functions on a block header
 * and comparing the result with the expected block hash
 *
 * @param header - The block header to hash
 * @param expectedHash - The expected block hash
 * @returns The matching HashFn or undefined if no match is found
 */
export declare function detectHasherFromHeader(header: Header, expectedHash: BlockHash): HashFn | undefined;