RocketChat/Rocket.Chat

import { Users } from '@rocket.chat/models';

import { addUserToDefaultChannels } from './addUserToDefaultChannels';

export const joinDefaultChannels = async (userId: string, silenced?: boolean): Promise<void> => {
    const user = await Users.findOneById(userId);

    if (!user) {
        throw new Meteor.Error('error-invalid-user', 'Invalid user');
    }
    return addUserToDefaultChannels(user, Boolean(silenced));
};