await redis.sadd("set1", "a", "b", "c"); 
await redis.sadd("set2", "c", "d", "e"); 
await redis.sunionstore("destination", "set1", "set2");

​
Arguments

​
destination
string
required
The key of the set to store the resulting set in.
​
keys
...string[]
required
The keys of the sets to perform the union operation on.

​
Response

The members of the resulting set.
await redis.sadd("set1", "a", "b", "c"); 
await redis.sadd("set2", "c", "d", "e"); 
await redis.sunionstore("destination", "set1", "set2");