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/GEOPOS.ts

@@ -1,27 +1,22 @@
-import { RedisCommandArgument, RedisCommandArguments } from '.';
-import { pushVerdictArguments } from './generic-transformers';
+import { RedisArgument, ArrayReply, TuplesReply, BlobStringReply, NullReply, UnwrapReply, Command } from '../RESP/types';
+import { RedisVariadicArgument, pushVariadicArguments } from './generic-transformers';
 
-export const FIRST_KEY_INDEX = 1;
-
-export const IS_READ_ONLY = true;
-
-export function transformArguments(
-    key: RedisCommandArgument,
-    member: RedisCommandArgument | Array<RedisCommandArgument>
-): RedisCommandArguments {
-    return pushVerdictArguments(['GEOPOS', key], member);
-}
-
-type GeoCoordinatesRawReply = Array<[RedisCommandArgument, RedisCommandArgument] | null>;
-
-interface GeoCoordinates {
-    longitude: RedisCommandArgument;
-    latitude: RedisCommandArgument;
-}
-
-export function transformReply(reply: GeoCoordinatesRawReply): Array<GeoCoordinates | null> {
-    return reply.map(coordinates => coordinates === null ? null : {
-        longitude: coordinates[0],
-        latitude: coordinates[1]
+export default {
+  FIRST_KEY_INDEX: 1,
+  IS_READ_ONLY: true,
+  transformArguments(
+    key: RedisArgument,
+    member: RedisVariadicArgument
+  ) {
+    return pushVariadicArguments(['GEOPOS', key], member);
+  },
+  transformReply(reply: UnwrapReply<ArrayReply<TuplesReply<[BlobStringReply, BlobStringReply]> | NullReply>>) {
+    return reply.map(item => {
+      const unwrapped = item as unknown as UnwrapReply<typeof item>;
+      return unwrapped === null ? null : {
+        longitude: unwrapped[0],
+        latitude: unwrapped[1]
+      };
     });
-}
+  }
+} as const satisfies Command;