Discord js Add reaction to a bot message

Question

I've been created my own discord bot but i have this error for this code:

 message.channel.send(":apple:***SONDAGE:apple:\n "+choix1+" ou "+""+choix2+"***").then(function (message) { message.react("") message.react("") message.pin() message.delete() });

It's send a message to the channel and add reaction, and in my console i have this error:

 (node:11728) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): DiscordAPIError: Unknown Message (node:11728) DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code. (node:11728) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 2): DiscordAPIError: Unknown Message

Answer 1

Those aren't error, those are warning. As it is said, you don't check when your promise is rejected. You should use .catch() after .then() in case it get rejected.

https://developer.mozilla.org/fr/docs/Web/JavaScript/Reference/Objets_globaux/Promise/catch

Try :

message.channel.send(":apple:***SONDAGE :apple:\n "+choix1+" ou "+""+choix2+"***")
            .then(function (message) {
              message.react("👍")
              message.react("👎")
              message.pin()
              message.delete()
            }).catch(function() {
              //Something
             });

Answer 2

On top of the previous things that the other answers have mentioned, functions like message.react(...) all return Promises, so for example the message might get deleted before the react/pin promises are resolved.

If you want things to happen in order you need to have a long .then(...).then(...).then(...) chain, or alternatively you could use async/await. Here's an async/await example:

client.on("message", async (message) => {
  const sentMessage = await message.channel.send("my message");
  await sentMessage.react("👍");
  await sentMessage.react("👎");
  await sentMessage.pin();
  await sentMessage.delete();
});

If you want to do any error handling on failures, you can wrap the await stuff in a try/catch block:

client.on("message", async (message) => {
  try {
    const sentMessage = await message.channel.send("my message");
    await sentMessage.react("👍");
    await sentMessage.react("👎");
    await sentMessage.pin();
    await sentMessage.delete();
  } catch (e) {
    console.error(e);
  }
});

Further reading:

• TextChannel.send(message)
• Message.react(emoji)
• Message.pin()
• Message.delete()

Answer 3

I had the same error, you do message.delete() , but you want to add reactions. When a message is deleted the bot can't add reactions. Just remove the message.delete() and no error will come.

Answer 4

Now on version 14 some things has changed a bit

The message and interaction events are now removed. You've to use messageCreate and interactionCreate instead.

So the code would like something like this...

client.on(Events.MessageCreate, async (message) => {
  try {
    if (message.channel.id === channel) {
      await message.react('😊');
    }
  } catch (err) {
    console.error(err);
  }
});

Further reading:

• Events
• Reacting to messages