sIsMember(key: string, member: string | number): boolean

import redis from "pts/redis";

let client = new redis.Client("redis://:<password>@<host>:6379/0");

export default function main() {
    let sAddResp = client.sAdd("set", "hello", "world");
    console.log(redis sAdd ${sAddResp}); // 2
    let sIsMemberResp = client.sIsMember("set", "hello");
    console.log(redis sIsMember ${sIsMemberResp}); // true
}