import { Hash } from '@dedot/codecs';
import { SignerPayloadJSON } from '@dedot/types';
import { SignedExtension } from '../SignedExtension.js';
export type CheckMetadataHashMode = 'Disabled' | 'Enabled';
/**
 * @description Genesis hash check to provide replay protection between different networks.
 */
export declare class CheckMetadataHash extends SignedExtension<{
    mode: CheckMetadataHashMode;
}, Hash | undefined> {
    init(): Promise<void>;
    fromPayload(payload: SignerPayloadJSON): Promise<void>;
    toPayload(): Partial<SignerPayloadJSON>;
}