Add SMOVE command for node

node/src/BaseClient.ts

@@ -65,6 +65,7 @@ import {
     createSCard,
     createSIsMember,
     createSMembers,
+    createSMove,
     createSPop,
     createSRem,
     createSet,
@@ -1224,6 +1225,33 @@ export class BaseClient {
         );
     }
 
+    /** Moves `member` from the set at `source` to the set at `destination`, removing it from the source set.
+     * Creates a new destination set if needed. The operation is atomic.
+     * See https://valkey.io/commands/smove for more details.
+     *
+     * Note: When in cluster mode, `source` and `destination` must map to the same hash slot.
+     *
+     * @param source - The key of the set to remove the element from.
+     * @param destination - The key of the set to add the element to.
+     * @param member - The set element to move.
+     * @returns True on success, or False if the `source` set does not exist or the element is not a member of the source set.
+     *
+     * @example
+     * ```typescript
+     * const result = await client.smove("set1", "set2", "member1");
+     * console.log(result); // Output: True - "member1" was moved from "set1" to "set2".
+     * ```
+     */
+    public smove(
+        source: string,
+        destination: string,
+        member: string,
+    ): Promise<boolean> {
+        return this.createWritePromise(
+            createSMove(source, destination, member),
+        );
+    }
+
     /** Returns the set cardinality (number of elements) of the set stored at `key`.
      * See https://redis.io/commands/scard/ for details.
      *

node/src/Commands.ts

@@ -549,6 +549,18 @@ export function createSMembers(key: string): redis_request.Command {
     return createCommand(RequestType.SMembers, [key]);
 }
 
+/**
+ *
+ * @internal
+ */
+export function createSMove(
+    source: string,
+    destination: string,
+    member: string,
+): redis_request.Command {
+    return createCommand(RequestType.SMove, [source, destination, member]);
+}
+
 /**
  * @internal
  */

node/src/Transaction.ts

@@ -68,6 +68,7 @@ import {
     createSCard,
     createSIsMember,
     createSMembers,
+    createSMove,
     createSPop,
     createSRem,
     createSelect,
@@ -678,6 +679,22 @@ export class BaseTransaction<T extends BaseTransaction<T>> {
         return this.addAndReturn(createSMembers(key), true);
     }
 
+    /** Moves `member` from the set at `source` to the set at `destination`, removing it from the source set.
+     * Creates a new destination set if needed. The operation is atomic.
+     * See https://valkey.io/commands/smove for more details.
+     *
+     * Note: When in cluster mode, `source` and `destination` must map to the same hash slot.
+     *
+     * @param source - The key of the set to remove the element from.
+     * @param destination - The key of the set to add the element to.
+     * @param member - The set element to move.
+     *
+     * Command Response - True on success, or False if the `source` set does not exist or the element is not a member of the source set.
+     */
+    public smove(source: string, destination: string, member: string): T {
+        return this.addAndReturn(createSMove(source, destination, member));
+    }
+
     /** Returns the set cardinality (number of elements) of the set stored at `key`.
      * See https://redis.io/commands/scard/ for details.
      *

node/tests/SharedTests.ts

@@ -1046,6 +1046,72 @@ export function runBaseTests<Context>(config: {
         config.timeout,
     );
 
+    it.each([ProtocolVersion.RESP2, ProtocolVersion.RESP3])(
+        `smove test_%p`,
+        async (protocol) => {
+            await runTest(async (client: BaseClient) => {
+                const key1 = "{key}" + uuidv4();
+                const key2 = "{key}" + uuidv4();
+                const key3 = "{key}" + uuidv4();
+                const string_key = "{key}" + uuidv4();
+                const non_existing_key = "{key}" + uuidv4();
+
+                expect(await client.sadd(key1, ["1", "2", "3"])).toEqual(3);
+                expect(await client.sadd(key2, ["2", "3"])).toEqual(2);
+
+                // move an element
+                expect(await client.smove(key1, key2, "1"));
+                expect(await client.smembers(key1)).toEqual(
+                    new Set(["2", "3"]),
+                );
+                expect(await client.smembers(key2)).toEqual(
+                    new Set(["1", "2", "3"]),
+                );
+
+                // moved element already exists in the destination set
+                expect(await client.smove(key2, key1, "2"));
+                expect(await client.smembers(key1)).toEqual(
+                    new Set(["2", "3"]),
+                );
+                expect(await client.smembers(key2)).toEqual(
+                    new Set(["1", "3"]),
+                );
+
+                // attempt to move from a non-existing key
+                expect(await client.smove(non_existing_key, key1, "4")).toEqual(
+                    false,
+                );
+                expect(await client.smembers(key1)).toEqual(
+                    new Set(["2", "3"]),
+                );
+
+                // move to a new set
+                expect(await client.smove(key1, key3, "2"));
+                expect(await client.smembers(key1)).toEqual(new Set(["3"]));
+                expect(await client.smembers(key3)).toEqual(new Set(["2"]));
+
+                // attempt to move a missing element
+                expect(await client.smove(key1, key3, "42")).toEqual(false);
+                expect(await client.smembers(key1)).toEqual(new Set(["3"]));
+                expect(await client.smembers(key3)).toEqual(new Set(["2"]));
+
+                // move missing element to missing key
+                expect(
+                    await client.smove(key1, non_existing_key, "42"),
+                ).toEqual(false);
+                expect(await client.smembers(key1)).toEqual(new Set(["3"]));
+                expect(await client.type(non_existing_key)).toEqual("none");
+
+                // key exists, but it is not a set
+                expect(await client.set(string_key, "value")).toEqual("OK");
+                await expect(
+                    client.smove(string_key, key1, "_"),
+                ).rejects.toThrow();
+            }, protocol);
+        },
+        config.timeout,
+    );
+
     it.each([ProtocolVersion.RESP2, ProtocolVersion.RESP3])(
         `srem, scard and smembers with non existing key_%p`,
         async (protocol) => {

node/tests/TestUtilities.ts

@@ -300,6 +300,8 @@ export async function transactionTest(
     args.push("bar");
     baseTransaction.spopCount(key7, 2);
     args.push(new Set());
+    baseTransaction.smove(key7, key7, "non_existing_member");
+    args.push(false);
     baseTransaction.scard(key7);
     args.push(0);
     baseTransaction.zadd(key8, {