Discord.js – Cooldown for a command for each user not all users

Yes it is easy and possible.

Add this at the top of your JS file:

// First, this must be at the top level of your code, **NOT** in any event!
const talkedRecently = new Set();

Now in the command event add this:

    if (talkedRecently.has(msg.author.id)) {
            msg.channel.send("Wait 1 minute before getting typing this again. - " + msg.author);
    } else {

           // the user can type the command ... your command code goes here :)

        // Adds the user to the set so that they can't talk for a minute
        talkedRecently.add(msg.author.id);
        setTimeout(() => {
          // Removes the user from the set after a minute
          talkedRecently.delete(msg.author.id);
        }, 60000);
    }