Description
Returns the string representation of the type of the value stored at key. The different types that can be returned are: string, list, set, zset, hash, and none.
Method Signature
type(key: string): Promise<Type>
Parameters
The key to get the type of
Return Value
The type of the key, one of:
"string" - String value"list" - List"set" - Set"zset" - Sorted set"hash" - Hash"none" - Key does not exist
Examples
String type
await redis.set("mykey", "value");
const type = await redis.type("mykey");
console.log(type); // "string"
List type
await redis.lpush("mylist", "item");
const type = await redis.type("mylist");
console.log(type); // "list"
Hash type
await redis.hset("myhash", { field: "value" });
const type = await redis.type("myhash");
console.log(type); // "hash"
Set type
await redis.sadd("myset", "member");
const type = await redis.type("myset");
console.log(type); // "set"
Sorted set type
await redis.zadd("myzset", { score: 1, member: "member" });
const type = await redis.type("myzset");
console.log(type); // "zset"
Non-existent key
const type = await redis.type("nonexistent");
console.log(type); // "none"
Type-specific operations
const type = await redis.type("mykey");
switch (type) {
case "string":
const value = await redis.get("mykey");
console.log(value);
break;
case "list":
const items = await redis.lrange("mykey", 0, -1);
console.log(items);
break;
case "hash":
const fields = await redis.hgetall("mykey");
console.log(fields);
break;
case "none":
console.log("Key does not exist");
break;
default:
console.log(`Key is of type: ${type}`);
}
See Also
- exists - Check if a key exists
- scan - Scan with type filtering