new ioredis.Cluster in getNumSub function constructor.name is not "Cluster"

[ReflexFox]

"ioredis": "^5.0.4",

const { createAdapter } = require("./redis-adapter");
const redisUrlArr = [url1,url2,...]
const Redis = require("ioredis");
const pubClient = new Redis.Cluster(redisUrlArr);
const subClient = pubClient.duplicate();
const io = require("socket.io")(server, {
transports: ["websocket"],
adapter: createAdapter(pubClient, subClient),
cors: {
origin: "*",
methods: ["GET", "POST"],
},
});

I am using ioredis to create a cluster mode redis but i fonud redis-adapter getNumSub function

this.pubClient.constructor.name not "Cluster"
so in redis Cluster mode fetchSockets function only can get current server users

[darrachequesne]

This should be fixed by d2faa8a, included in version 7.2.0.