[ioredis] Add lpop for Cluster (#43005)

Co-authored-by: thmiyathmary <hayato1023_zero_giga@yahoo.co.jp>

types/ioredis/index.d.ts

@@ -1326,6 +1326,9 @@ declare namespace IORedis {
 
         rpushBuffer(key: string, ...values: Buffer[]): Promise<number>;
 
+        lpop(key: KeyType, callback: (err: Error, res: string) => void): void;
+        lpop(key: KeyType): Promise<string>;
+
         lpopBuffer(key: KeyType, callback: (err: Error, res: Buffer) => void): void;
         lpopBuffer(key: KeyType): Promise<Buffer>;
 

types/ioredis/ioredis-tests.ts

@@ -278,6 +278,18 @@ cluster.decr('key', (err, data) => {
     // [null, '100']
 });
 
+listData.forEach(value => {
+    cluster.rpush('bufferlist', Buffer.from(value));
+});
+
+listData.forEach(value => {
+    cluster.lpop('bufferlist', (err, data) => {
+        if (data !== value) {
+            console.log(data);
+        }
+    });
+});
+
 listData.forEach(value => {
     cluster.rpushBuffer('bufferlist', Buffer.from(value));
 });