discord.js client.guilds.cache.get(role).members | Create a array with all members of a guild

Question

I want to create an array with every user with a specific role. But I get the following error:

TypeError: Cannot read property 'members' of undefined

The code that I am currently using:

var role = receivedMessage.guild.roles.cache.find(role => role.name === "arole");
const guild = client.guilds.cache.get(role);
if (guild == "") {
    console.log("guild not found");
} else {
    const Members = client.guilds.cache.get(role).members.cache.map(member => member.id);
}

Answer 1

This code gets all members with a certain role in the server the message was sent in:

const guild = receivedMessage.guild;
if (!guild) return console.log("Couldn't get the guild.");

const members = guild.members.cache.filter(member => member.roles.cache.find(role => role.name === "arole")).map(member => member.id);

If you want to get all members with a certain role in a specific server, you can specify the guild ID:

const guild = client.guilds.cache.get(/* Guild ID */);
if (!guild) return console.log("Couldn't get the guild.");

const members = guild.members.cache.filter(member => member.roles.cache.find(role => role.name === "arole")).map(member => member.id);

For more information on valid properties and methods, please read the Discord.js docs.

Answer 2

Seems like the guild is non-existent or your bot doesn't have acccess to it, you can simply check this by doing something like

const guild = client.guilds.cache.get("335507048017952771");
if (!guild) return console.log("guild not found :(");

//also use the built-in array() method
console.log(guild.array());