discord js get guild role code example
Example 1: get discord.js role
let role = message.guild.roles.cache.find(r => r.id === "Role ID");
let member = message.mentions.members.first();
member.roles.add(role);
message.author.roles.add(role);
Example 2: discord.js find role by name
let role = message.guild.roles.cache.find(role => role.name === "Rolename");
Example 3: discord.js get all members with role
message.guild.roles.get('ROLE-ID').members.map(m=>m.user.id);
message.guild.roles.cache.get('ROLE-ID').members.map(m=>m.user.id);