// 网络/HTTP 错误
export class ApiError extends Error {
  constructor(message: string, public readonly statusCode?: number) {
    super(message)
    this.name = 'ApiError'
  }
}

// 业务错误（后端 Code 为字符串，如 '200'/'500'/'401'）
export class BusinessError extends Error {
  constructor(message: string, public readonly code: string) {
    super(message)
    this.name = 'BusinessError'
  }
}

// 登录态失效（HTTP 401 或业务码 401），触发踢回登录页
export class AuthExpiredError extends Error {
  constructor(message: string) {
    super(message)
    this.name = 'AuthExpiredError'
  }
}