Function fetchWithTimeout

src/utils/request.ts:325–362

(
  url: string,
  options: RequestInit = {},
  timeoutMs: number = API_TIMEOUT.DEFAULT
)

 * @returns 响应数据或抛出错误
 */
export async function fetchWithTimeout<T>(
  url: string,
  options: RequestInit = {},
  timeoutMs: number = API_TIMEOUT.DEFAULT
): Promise<T> {
  const controller = new AbortController()
  const timeoutId = setTimeout(() => controller.abort(), timeoutMs)

  try {
    const response = await fetch(url, {
      ...options,
      signal: controller.signal,
    })

    if (!response.ok) {
      throw AppError.api(
        `HTTP ${response.status}: ${response.statusText}`,
        `HTTP_${response.status}`,
        { url }
      )
    }

    return (await response.json()) as T
  } catch (error) {
    if (error instanceof DOMException && error.name === 'AbortError') {
      throw AppError.timeout(url, timeoutMs)
    }
    if (error instanceof AppError) {
      throw error
    }
    if (error instanceof Error) {
      throw AppError.network(error.message, error)
    }
    throw AppError.api(String(error), 'FETCH_FAILED')
  } finally {
    clearTimeout(timeoutId)
  }
}

/**
 * 可取消的请求包装器