Function isStateChangeError

src/error.ts:1533–1535

(error: MongoError)

 * @see https://github.com/mongodb/specifications/blob/master/source/server-discovery-and-monitoring/server-discovery-and-monitoring.md#not-writable-primary-and-node-is-recovering
 */
export function isStateChangeError(error: MongoError): boolean {
  return isRecoveringError(error) || isNotWritablePrimaryError(error);
}

export function isNetworkTimeoutError(err: MongoError): err is MongoNetworkError {
  return !!(err instanceof MongoNetworkError && err.message.match(/timed out/));