whatsapp-web.js/src/structures/index.js

module.exports = {
    Base: require('./Base'),
    BusinessContact: require('./BusinessContact'),
    Chat: require('./Chat'),
    ClientInfo: require('./ClientInfo'),
    Contact: require('./Contact'),
    GroupChat: require('./GroupChat'),
    Location: require('./Location'),
    Message: require('./Message'),
    MessageMedia: require('./MessageMedia'),
    PrivateChat: require('./PrivateChat'),
    PrivateContact: require('./PrivateContact'),
};