/**
 * 从错误对象中提取错误消息
 * @param error 错误对象
 * @param fallback 默认错误消息
 * @returns 错误消息
 */
export function readError(error: unknown, fallback: string): string {
  if (typeof error === 'object' && error && 'response' in error) {
    const response = (error as { response?: { data?: { message?: string } } }).response
    return response?.data?.message || fallback
  }
  if (error instanceof Error) {
    return error.message || fallback
  }
  if (typeof error === 'string') {
    return error
  }
  return fallback
}