Function delay

packages/arctic/src/session/retry.ts:50–90

(attempt: number, error?: MessageV2.APIError)

  }

  export function delay(attempt: number, error?: MessageV2.APIError) {
    if (error) {
      const headers = error.data.responseHeaders
      if (headers) {
        const retryAfterMs = headers["retry-after-ms"]
        if (retryAfterMs) {
          const parsedMs = Number.parseFloat(retryAfterMs)
          if (!Number.isNaN(parsedMs)) {
            return parsedMs
          }
        }

        const retryAfter = headers["retry-after"]
        if (retryAfter) {
          const parsedSeconds = Number.parseFloat(retryAfter)
          if (!Number.isNaN(parsedSeconds)) {
            // convert seconds to milliseconds
            return Math.ceil(parsedSeconds * 1000)
          }
          // Try parsing as HTTP date format
          const parsed = Date.parse(retryAfter) - Date.now()
          if (!Number.isNaN(parsed) && parsed > 0) {
            return Math.ceil(parsed)
          }
        }
      }

      // try to extract delay from google error message/body
      const fromMessage = extractGoogleRetryDelay(error.data.message)
      if (fromMessage) return fromMessage

      const fromBody = extractRetryDelayFromBody(error.data.responseBody)
      if (fromBody) return fromBody

      if (headers) {
        return RETRY_INITIAL_DELAY * Math.pow(RETRY_BACKOFF_FACTOR, attempt - 1)
      }
    }

    return Math.min(RETRY_INITIAL_DELAY * Math.pow(RETRY_BACKOFF_FACTOR, attempt - 1), RETRY_MAX_DELAY_NO_HEADERS)
  }

  // check if error is a permanent billing/quota exhaustion (not retryable)
  function isPermanentUsageError(error: MessageV2.APIError): boolean {