V5 bringing RESP3, Sentinel and TypeMapping to node-redis

RESP3 Support
   - Some commands responses in RESP3 aren't stable yet and therefore return an "untyped" ReplyUnion.
 
Sentinel

TypeMapping

Correctly types Multi commands

Note: some API changes to be further documented in v4-to-v5.md

packages/client/lib/sentinel/commands/SENTINEL_REPLICAS.ts

@@ -0,0 +1,23 @@
+import { RedisArgument, ArrayReply, BlobStringReply, MapReply, Command, TypeMapping, UnwrapReply } from '../../RESP/types';
+import { transformTuplesReply } from '../../commands/generic-transformers';
+
+export default {
+  transformArguments(dbname: RedisArgument) {
+    return ['SENTINEL', 'REPLICAS', dbname];
+  },
+  transformReply: {
+    2: (reply: ArrayReply<ArrayReply<BlobStringReply>>, preserve?: any, typeMapping?: TypeMapping) => {
+      const inferred = reply as unknown as UnwrapReply<typeof reply>;
+      const initial: Array<MapReply<BlobStringReply, BlobStringReply>> = [];
+
+      return inferred.reduce(
+        (sentinels: Array<MapReply<BlobStringReply, BlobStringReply>>, x: ArrayReply<BlobStringReply>) => {
+          sentinels.push(transformTuplesReply(x, undefined, typeMapping)); 
+          return sentinels;
+        }, 
+        initial
+      );
+    },
+    3: undefined as unknown as () => ArrayReply<MapReply<BlobStringReply, BlobStringReply>>
+  }
+} as const satisfies Command;