isGroup is undefined & group chat being identified as PrivateChat

[notedwin-dev]

Is there an existing issue for this?

• I have searched the existing issues.

Is this a problem caused by your code, or is it specifically because of the library?

• I have double-checked my code carefully.

Describe the bug.

isGroup is undefined & group chat being identified as PrivateChat.

Workaround:

const { Client, LocalAuth } = require("whatsapp-web.js");

const client = new Client({
    puppeteer: {
      headless: true,
      args: ["--no-sandbox", "--disable-setuid-sandbox"],
    },
    authStrategy: new LocalAuth(),
    webVersionCache: {
      type: "remote",
      remotePath:
        "https://raw.githubusercontent.com/wppconnect-team/wa-version/main/html/2.3000.1018501131-alpha.html",
    },
  });
  
client.on("message", async (msg) => {
    const { from } = msg;
    const chat = await msg.getChat();
    let contact = await chat.getContact();

    if (contact.isGroup === true) {
      console.log("Ignoring group message");
      return;
    } else {
      console.log("Message received:", msg.body);
     }
 });

### Expected Behavior

I expected chat.isGroup to be true or false, instead, I got undefined.

Chat: PrivateChat {
id: {
server: 'g.us',
user: 'aaa',
_serialized: '[email protected]'
},
name: '',
isGroup: undefined,
isReadOnly: false,
unreadCount: 0,
timestamp: 1732716353,
archived: undefined,
pinned: false,
isMuted: undefined,
muteExpiration: 0,
lastMessage: Message {
_data: {
id: [Object],
viewed: false,
body: 'hi',
type: 'chat',
t: 1732716421,
notifyName: 'aaa',
from: [Object],
to: [Object],
author: [Object],
ack: 1,
invis: false,
isNewMsg: true,
star: false,
kicNotified: false,
recvFresh: true,
isFromTemplate: false,
pollInvalidated: false,
isSentCagPollCreation: false,
latestEditMsgKey: null,
latestEditSenderTimestampMs: null,
mentionedJidList: [],
groupMentions: [],
isEventCanceled: false,
eventInvalidated: false,
isVcardOverMmsDocument: false,
isForwarded: false,
hasReaction: false,
viewMode: 'VISIBLE',
messageSecret: [Object],
productHeaderImageRejected: false,
lastPlaybackProgress: 0,
isDynamicReplyButtonsMsg: false,
isCarouselCard: false,
parentMsgId: null,
isMdHistoryMsg: false,
stickerSentTs: 0,
isAvatar: false,
lastUpdateFromServerTs: 0,
invokedBotWid: null,
bizBotType: null,
botResponseTargetId: null,
botPluginType: null,
botPluginReferenceIndex: null,
botPluginSearchProvider: null,
botPluginSearchUrl: null,
botPluginSearchQuery: null,
botPluginMaybeParent: false,
botReelPluginThumbnailCdnUrl: null,
botMsgBodyType: null,
requiresDirectConnection: false,
bizContentPlaceholderType: null,
hostedBizEncStateMismatch: false,
senderOrRecipientAccountTypeHosted: false,
placeholderCreatedWhenAccountIsHosted: false,
links: []
},
mediaKey: undefined,
id: {
fromMe: false,
remote: '[email protected]',
id: '3A179859486398FC30D6',
participant: [Object],
_serialized: 'false_120363371704224503@[email protected]'
},
ack: 1,
hasMedia: false,
body: 'hi',
type: 'chat',
timestamp: 1732716421,
from: '[email protected]',
to: '[email protected]',
author: '[email protected]',
deviceType: 'ios',
isForwarded: false,
forwardingScore: 0,
isStatus: false,
isStarred: false,
broadcast: undefined,
fromMe: false,
hasQuotedMsg: false,
hasReaction: false,
duration: undefined,
location: undefined,
vCards: [],
inviteV4: undefined,
mentionedIds: [],
groupMentions: [],
orderId: undefined,
token: undefined,
isGif: false,
isEphemeral: undefined,
links: []
}
}
Message received: hi

### Steps to Reproduce the Bug or Issue

```js
const { Client, LocalAuth } = require("whatsapp-web.js");

const client = new Client({
    puppeteer: {
      headless: true,
      args: ["--no-sandbox", "--disable-setuid-sandbox"],
    },
    authStrategy: new LocalAuth(),
    webVersionCache: {
      type: "remote",
      remotePath:
        "https://raw.githubusercontent.com/wppconnect-team/wa-version/main/html/2.3000.1018501131-alpha.html",
    },
  });
  
client.on("message", async (msg) => {
    const { from } = msg;
    const chat = await msg.getChat();
    console.log("Chat:", chat);

    if (chat.isGroup === true) {
      console.log("Ignoring group message");
      return;
    } else {
      console.log("Message received:", msg.body);
    }
   });

WhatsApp Account Type

Standard

Browser Type

Google Chrome (Mac OS)

Operation System Type

Mac OS

Phone OS Type

Android

WhatsApp-Web.js Version

1.26.0

WhatsApp Web Version

2.3000.1018501131

Node.js Version

v21.5.0

Authentication Strategy

LocalAuth

Additional Context

No response

[Halphas]

same here setsubject etc. therefore stopped working. god....

[alechkos]

Fixed in #3380

Use

npm install [email protected]