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/COMMAND_GETKEYSANDFLAGS.ts

@@ -1,24 +1,23 @@
-import { RedisCommandArgument, RedisCommandArguments } from '.';
+import { RedisArgument, ArrayReply, TuplesReply, BlobStringReply, SetReply, UnwrapReply, Command } from '../RESP/types';
 
-export const IS_READ_ONLY = true;
+export type CommandGetKeysAndFlagsRawReply = ArrayReply<TuplesReply<[
+  key: BlobStringReply,
+  flags: SetReply<BlobStringReply>
+]>>;
 
-export function transformArguments(args: Array<RedisCommandArgument>): RedisCommandArguments {
+export default {
+  FIRST_KEY_INDEX: undefined,
+  IS_READ_ONLY: true,
+  transformArguments(args: Array<RedisArgument>) {
     return ['COMMAND', 'GETKEYSANDFLAGS', ...args];
-}
-
-type KeysAndFlagsRawReply = Array<[
-    RedisCommandArgument,
-    RedisCommandArguments
-]>;
-
-type KeysAndFlagsReply = Array<{
-    key: RedisCommandArgument;
-    flags: RedisCommandArguments;
-}>;
-
-export function transformReply(reply: KeysAndFlagsRawReply): KeysAndFlagsReply {
-    return reply.map(([key, flags]) => ({
+  },
+  transformReply(reply: UnwrapReply<CommandGetKeysAndFlagsRawReply>) {
+    return reply.map(entry => {
+      const [key, flags] = entry as unknown as UnwrapReply<typeof entry>;
+      return {
         key,
         flags
-    }));
-}
+      };
+    });
+  }
+} as const satisfies Command;