Function validateLoadBalancedOptions

src/connection_string.ts:560–581

* #### Throws if LB mode is true: * - hosts contains more than one host * - there is a replicaSet name set * - directConnection is set * - if srvMaxHosts is used when an srv connection string is passed in * * @throws MongoParseError

(
  hosts: HostAddress[] | string[],
  mongoOptions: MongoOptions,
  isSrv: boolean
)

 * @throws MongoParseError
 */
function validateLoadBalancedOptions(
  hosts: HostAddress[] | string[],
  mongoOptions: MongoOptions,
  isSrv: boolean
): void {
  if (mongoOptions.loadBalanced) {
    if (hosts.length > 1) {
      throw new MongoParseError(LB_SINGLE_HOST_ERROR);
    }
    if (mongoOptions.replicaSet) {
      throw new MongoParseError(LB_REPLICA_SET_ERROR);
    }
    if (mongoOptions.directConnection) {
      throw new MongoParseError(LB_DIRECT_CONNECTION_ERROR);
    }

    if (isSrv && mongoOptions.srvMaxHosts > 0) {
      throw new MongoParseError(class="st">'Cannot limit srv hosts with loadBalanced enabled');
    }
  }
  return;
}

function setOption(
  mongoOptions: any,