clearChats.js

if(msg.body=='!clearChats'){
        //clearing ALL CHATS
        msg.reply("Clearing chats !")
        const chats = await client.getChats();
        for (let index = 0; index < chats.length; index++) {
            let chat = chats[index]

            /*
            UNCOMMENT IF YOU WANT CLEAR ONLY PRIVATE CHATS

            if(chats[index].isGroup==false){
                await chat.clearMessages(true)
                console.log("Clearing ",index," chat")
            }
            */

            //And delete this
            await chat.clearMessages(true)
       }
       client.sendMessage(msg.from,"All the "+index+" chats have been cleared")
    }

listChats.js

else if (msg.body == '!chats') {
        const chats = await client.getChats();       
        let chatG=0
        let chatP=0
        //console.log(chats.id.server)
        let unread=0
        for (let index = 0; index < chats.length; index++) {
            if(chats[index].isGroup==true){
                //Group Chats ++
                chatG++
                //Unread ++
                unread = unread + chats[index].unreadCount
            }
            if(chats[index].isGroup==false){
                //Private Chats ++
                chatP++
                //Unread ++
                unread = unread + chats[index].unreadCount
            }
        }
        client.sendMessage(msg.from, 
`*💬 Status* :

➣ *${unread}* unread messages
➣ *${chatG}* Groups
➣ *${chatP}* Private chats
➣ *${chats.length}* Total chats

〘Your Bot Name〙`);
        
}