async function _throttledFetch()

in src/utils/hibp.ts [55:98]

• 41 lines of code
• 7 McCabe index (conditional complexity)

async function _throttledFetch(
  url: string,
  reqOptions?: RequestInit,
  tryCount = 1,
) {
  try {
    const response = await fetch(url, reqOptions);
    const responseJson = await response.json();
    if (response.ok) return responseJson as unknown;

    switch (response.status) {
      case 404:
        // 404 can mean "no results", return undefined response
        logger.info("_throttledFetch", {
          exception: "Error 404, not going to retry. TryCount: " + tryCount,
        });
        return undefined;
      case 429:
        logger.info("_throttledFetch", {
          exception: "Error 429, tryCount: " + tryCount,
        });
        // @ts-ignore TODO: Explicitly parse into a number
        if (tryCount >= HIBP_THROTTLE_MAX_TRIES) {
          throw new Error("error_hibp_throttled");
        } else {
          tryCount++;
          await new Promise((resolve) =>
            setTimeout(
              resolve,
              Number.parseInt(HIBP_THROTTLE_DELAY, 10) * tryCount,
            ),
          );
          return await _throttledFetch(url, reqOptions, tryCount);
        }
      default:
        throw responseJson;
    }
  } catch (e) {
    if (e instanceof Error) {
      logger.error("hibp_throttle_fetch_error", { stack: e.stack });
    }
    throw e;
  }
}