import type { ClientMiddlewareFn } from "../types";
/**
 * Middleware function that sets the `paymasterAndData` field in the given struct based on the entry point version of the account.
 * This is the default used by `createSmartAccountClient` and is not necessary to be used directly.
 *
 * @param {UserOperationStruct} struct the user operation structure to be modified
 * @param {{ account: Account }} context an object containing the account information
 * @returns {Promise<UserOperationStruct>} a promise that resolves to the modified user operation structure
 */
export declare const defaultPaymasterAndData: ClientMiddlewareFn;