await redis.sadd("set", "a", "b", "c"); 
const isMember =  await redis.sismember("set", "a");
console.log(isMember); // 1

​
Arguments

​
key
string
required
The key of the set to check.
​
member
TMember
The member to check for.

​
Response

1 if the member exists in the set, 0 if not.
await redis.sadd("set", "a", "b", "c"); 
const isMember =  await redis.sismember("set", "a");
console.log(isMember); // 1