#2666 for v5

packages/client/lib/client/index.spec.ts

@@ -3,7 +3,7 @@ import testUtils, { GLOBAL, waitTillBeenCalled } from '../test-utils';
 import RedisClient, { RedisClientType } from '.';
 // import { RedisClientMultiCommandType } from './multi-command';
 // import { RedisCommandRawReply, RedisModules, RedisFunctions, RedisScripts } from '../commands';
-import { AbortError, ClientClosedError, ClientOfflineError, ConnectionTimeoutError, DisconnectsClientError, SocketClosedUnexpectedlyError, WatchError } from '../errors';
+import { AbortError, ClientClosedError, ClientOfflineError, ConnectionTimeoutError, DisconnectsClientError, ErrorReply, MultiErrorReply, SocketClosedUnexpectedlyError, WatchError } from '../errors';
 import { defineScript } from '../lua-script';
 import { spy } from 'sinon';
 import { once } from 'node:events';
@@ -282,6 +282,23 @@ describe('Client', () => {
     //   ...GLOBAL.SERVERS.OPEN,
     //   minimumDockerVersion: [6, 2] // CLIENT INFO
     // });
+
+
+    testUtils.testWithClient('should handle error replies (#2665)', async client => {
+      await assert.rejects(
+        client.multi()
+          .set('key', 'value')
+          .hGetAll('key')
+          .exec(),
+        err => {
+          assert.ok(err instanceof MultiErrorReply);
+          assert.equal(err.replies.length, 2);
+          assert.deepEqual(err.errorIndexes, [1]);
+          assert.ok(err.replies[1] instanceof ErrorReply);
+          return true;
+        }
+      );
+    }, GLOBAL.SERVERS.OPEN);
   });
 
   testUtils.testWithClient('scripts', async client => {

packages/client/lib/errors.ts

@@ -69,3 +69,14 @@ export class SimpleError extends ErrorReply {}
 export class BlobError extends ErrorReply {}
 
 export class TimeoutError extends Error {}
+
+export class MultiErrorReply extends ErrorReply {
+  replies: Array<ErrorReply>;
+  errorIndexes: Array<number>;
+
+  constructor(replies: Array<ErrorReply>, errorIndexes: Array<number>) {
+    super(`${errorIndexes.length} commands failed, see .replies and .errorIndexes for more information`);
+    this.replies = replies;
+    this.errorIndexes = errorIndexes;
+  }
+}

packages/client/lib/multi-command.ts

@@ -1,4 +1,5 @@
 import { CommandArguments, RedisScript, ReplyUnion, TransformReply } from './RESP/types';
+import { ErrorReply, MultiErrorReply } from './errors';
 
 export type MULTI_REPLY = {
   GENERIC: 'generic';
@@ -46,9 +47,18 @@ export default class RedisMultiCommand {
   }
   
   transformReplies(rawReplies: Array<unknown>): Array<unknown> {
-    return rawReplies.map((reply, i) => {
-      const { transformReply, args } = this.queue[i];
-      return transformReply ? transformReply(reply, args.preserve) : reply;
-    });
+    const errorIndexes: Array<number> = [],
+      replies = rawReplies.map((reply, i) => {
+        if (reply instanceof ErrorReply) {
+          errorIndexes.push(i);
+          return reply;
+        }
+
+        const { transformReply, args } = this.queue[i];
+        return transformReply ? transformReply(reply, args.preserve) : reply;
+      });
+
+    if (errorIndexes.length) throw new MultiErrorReply(replies, errorIndexes);
+    return replies;
   }
 }