import type { ControlFlowOptions } from '../../../types.js';
import type { Chain } from '../index.js';
import type { Message } from '../transports/index.js';
import type { Client } from 'viem';
export type WaitForAttestationMessageParams = {
    hash: string;
    chain?: Chain;
};
export type AttestedMessage = Omit<Message, 'attestation' | 'status'> & {
    status: 'complete';
    attestation: NonNullable<Message['attestation']>;
};
/**
 * Waits for an attestation of a transaction hash for the Cross-Chain Transfer Protocol (CCTP).
 *
 * @param client - The client instance to use for the operation.
 * @returns Returns the attestation of the transaction hash.
 */
export declare function waitForAttestationMessage(client: Client, params: WaitForAttestationMessageParams & ControlFlowOptions): Promise<AttestedMessage>;