This snippets adds a specific role ID to all new users joined the server.
const lib = require('lib')({token: process.env.STDLIB_SECRET_TOKEN});
const event = context.params.event
await lib.discord.guilds['@0.1.0'].members.roles.update({
guild_id: event.guild_id,
user_id: event.user.id,
role_id: process.env.NEW_ROLE_ID,
});