discord.js - How to get random user ID's of users with reaction-CodePudding

I want to get random user ID from users with reaction on specific message.

    await msg.react("<:SenkoSad:788848057844367411>")
    setTimeout(()=> {
        const winner = msg.reactions.cache.get("<:SenkoSad:788848057844367411>").users.cache.random().id
        message.channel.send(`Random user from emotes: <@${winner}>`)
    }, time-Date.now())

Here is error: TypeError: Cannot read properties of undefined (reading 'users')
on line const winner = msg.reactions.cache.get("<:SenkoSad:788848057844367411>").users.cache.random().id

CodePudding user response：

Try using @metro's answer but use the filter function

Like:

msg.reactions.cache.get("788848057844367411").users.cache.filter(e => !e.bot).random().id

CodePudding user response：

Try switching the line to:

const winner = msg.reactions.cache.get("788848057844367411").users.cache.random().id

I am not entirely sure, but perhaps get() expects a Snowflake for a custom emoji rather than the format you provided.

CodePudding user response：

By using reactions.cache.get("788848057844367411") you are getting a MessageReaction.

Note that to get a reaction you need to provide a unicode emoji (In case they are default emojis) or an ID (In this case it is 78884805784444367411, only the ID, not the emoji name).

MessageReaction.users returns you a ReactionsUserManager, the cache of this includes ALL users who have reacted to this message including the bot itself, so you should add a Filter: .users.cache.filter(user => !user.bot)

As for the error, what you can do to avoid this error is a conditional where you check if the number of users (not counting the bot) is greater than 0.

if(msg.reactions.cache.get("788848057844367411").users.cache.filter(user => !user.bot).size > 0) {
    // If there can be a winner
} else {
    // If nobody reacted
}