/**
 * Utils - 工具模块导出入口
 */
export { default as EventEmitter } from './EventEmitter';
export { SMHError, ErrorCode, ServerErrorCode, newError, analyzeError, extractAxiosErrorInfo, getServerErrorMessage, setServerErrorMessages, resetServerErrorMessages, wrapErrorToSMHError, type ISMHError, type ErrorAnalysis, type AxiosErrorInfo } from './ErrorHandler';
export { formatSize, formatTime, formatRemainingTime } from './Formatter';
export { parallelLimit, delay, withRetry, type ParallelLimitOptions } from './async';
export { calculateBeginningHash, calculateFullHash, sha256 } from './hash';
export { updateCRC64, finalizeCRC64, combineCRC64, combinePartsCRC64, calculateBlobCRC64, calculateBufferCRC64, CRC64_INIT_VALUE } from './crc64';
/**
 * 解析 COS 域名，提取 bucket 和 region
 * @param domain COS 域名，如 "bucket-123456.cos.ap-guangzhou.myqcloud.com"
 * 支持自定义域名场景，解析失败时返回空字符串而非抛错
 */
export declare function parseCOSDomain(domain: string): {
    bucket: string;
    region: string;
};