Function mergeSentinelNodes

packages/client/lib/sentinel/utils.ts:37–55

(
  seedNodes: Array<RedisNode>,
  discoveredNodes: Array<RedisNode>
)

 * (see issue #3237).
 */
export function mergeSentinelNodes(
  seedNodes: Array<RedisNode>,
  discoveredNodes: Array<RedisNode>
): Array<RedisNode> {
  const seen = new Set<string>();
  const merged: Array<RedisNode> = [];

  for (const node of [...seedNodes, ...discoveredNodes]) {
    const key = `${node.host}:${node.port}`;
    if (!seen.has(key)) {
      // Clone so the working root-nodes list never aliases the frozen seed
      // node objects (or the discovered ones).
      merged.push({ host: node.host, port: node.port });
      seen.add(key);
    }
  }

  return merged;
}

export function clientSocketToNode(socket: RedisSocketOptions): RedisNode {
  const s = socket as RedisTcpSocketOptions;