Demonstração repositorry crud async/await com node.js para o post no medium https://medium.com/@leoo.farias/crud-com-async-await-no-node-js-4e1032da5a33

crud_repository.js

exports.get = async() => {
    return await User.find({}, 'name email');
}

exports.getById = async(id) => {
    return await User.findById(id, 'name email');
}

exports.create = async(data) => {
    const user = new User(data);
    await user.save();
}

exports.update = async(id, data) => {
    await User
        .findByIdAndUpdate(id, {
            $set: {
                name: data.name
            }  
        });
}

exports.delete = async(id) => {
    await User.findByIdAndRemove(id);
}