import { Address } from '../types';
/**
 * 验证以太坊地址格式
 */
export declare function isValidAddress(address: string): address is Address;
/**
 * 检查地址是否为零地址
 */
export declare function isZeroAddress(address: Address): boolean;
/**
 * 格式化地址显示（截断中间部分）
 */
export declare function formatAddress(address: Address, prefixLength?: number, suffixLength?: number): string;
/**
 * 延迟函数
 */
export declare function delay(ms: number): Promise<void>;