import { type Address } from 'viem';
export type BuildSiweMessageParams = {
    domain: string;
    address: Address;
    uri: string;
    chainId: number;
    nonce: string;
    issuedAt: number;
    expiresAt?: number;
    statement?: string;
    version?: '1';
};
/**
 * Builds an EIP-4361 (Sign-In with Ethereum) message string ready for wallet signing.
 * Intended to be called between `getSiweNonce` and a wallet `signMessage` call, with the
 * resulting string passed verbatim to `signMessage` and then `verifySiwe`.
 *
 * The caller is responsible for passing an EIP-55 checksummed `address`; no normalisation
 * is applied internally. `issuedAt` and `expiresAt` are unix epoch milliseconds and are
 * formatted to ISO 8601 automatically. If `statement` is omitted the statement block is
 * dropped entirely. If `expiresAt` is omitted the `Expiration Time` line is omitted.
 *
 * @see https://eips.ethereum.org/EIPS/eip-4361
 *
 * @example
 * import { buildSiweMessage } from '@azuro-org/toolkit'
 *
 * const message = buildSiweMessage({
 *   domain: 'app.example.com',
 *   address: '0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045',
 *   uri: 'https://app.example.com',
 *   chainId: 137,
 *   nonce: 'abc123',
 *   issuedAt: Date.now(),
 * })
 * */
export declare const buildSiweMessage: (p: BuildSiweMessageParams) => string;