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/commands/ZDIFFSTORE.ts

@@ -1,13 +1,14 @@
-import { RedisCommandArgument, RedisCommandArguments } from '.';
-import { pushVerdictArgument } from './generic-transformers';
+import { RedisArgument, NumberReply, Command } from '../RESP/types';
+import { RedisVariadicArgument, pushVariadicArgument } from './generic-transformers';
 
-export const FIRST_KEY_INDEX = 1;
-
-export function transformArguments(
-    destination: RedisCommandArgument,
-    keys: Array<RedisCommandArgument> | RedisCommandArgument
-): RedisCommandArguments {
-    return pushVerdictArgument(['ZDIFFSTORE', destination], keys);
-}
-
-export declare function transformReply(): number;
+export default {
+  FIRST_KEY_INDEX: 2,
+  IS_READ_ONLY: true,
+  transformArguments(
+    destination: RedisArgument,
+    inputKeys: RedisVariadicArgument
+  ) {
+    return pushVariadicArgument(['ZDIFFSTORE', destination], inputKeys);
+  },
+  transformReply: undefined as unknown as () => NumberReply
+} as const satisfies Command;