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/XPENDING.ts

@@ -1,44 +1,34 @@
-import { RedisCommandArgument, RedisCommandArguments } from '.';
+import { RedisArgument, BlobStringReply, NullReply, ArrayReply, TuplesReply, NumberReply, UnwrapReply, Command } from '../RESP/types';
 
-export const FIRST_KEY_INDEX = 1;
+type XPendingRawReply = TuplesReply<[
+  pending: NumberReply,
+  firstId: BlobStringReply | NullReply,
+  lastId: BlobStringReply | NullReply,
+  consumers: ArrayReply<TuplesReply<[
+    name: BlobStringReply,
+    deliveriesCounter: BlobStringReply
+  ]>> | NullReply
+]>;
 
-export const IS_READ_ONLY = true;
-
-export function transformArguments(
-    key: RedisCommandArgument,
-    group: RedisCommandArgument
-): RedisCommandArguments {
+export default {
+  FIRST_KEY_INDEX: 1,
+  IS_READ_ONLY: true,
+  transformArguments(key: RedisArgument, group: RedisArgument) {
     return ['XPENDING', key, group];
-}
-
-type XPendingRawReply = [
-    pending: number,
-    firstId: RedisCommandArgument | null,
-    lastId: RedisCommandArgument | null,
-    consumers: Array<[
-        name: RedisCommandArgument,
-        deliveriesCounter: RedisCommandArgument
-    ]> | null
-];
-
-interface XPendingReply {
-    pending: number;
-    firstId: RedisCommandArgument | null;
-    lastId: RedisCommandArgument | null;
-    consumers: Array<{
-        name: RedisCommandArgument;
-        deliveriesCounter: number;
-    }> | null;
-}
-
-export function transformReply(reply: XPendingRawReply): XPendingReply {
+  },
+  transformReply(reply: UnwrapReply<XPendingRawReply>) {
+    const consumers = reply[3] as unknown as UnwrapReply<typeof reply[3]>;
     return {
-        pending: reply[0],
-        firstId: reply[1],
-        lastId: reply[2],
-        consumers: reply[3] === null ? null : reply[3].map(([name, deliveriesCounter]) => ({
-            name,
-            deliveriesCounter: Number(deliveriesCounter)
-        }))
-    };
-}
+      pending: reply[0],
+      firstId: reply[1],
+      lastId: reply[2],
+      consumers: consumers === null ? null : consumers.map(consumer => {
+        const [name, deliveriesCounter] = consumer as unknown as UnwrapReply<typeof consumer>;
+        return {
+          name,
+          deliveriesCounter: Number(deliveriesCounter)
+        };
+      })
+    }
+  }
+} as const satisfies Command;