create-nodeapi-backend/template/javascript/src/utils/responseFormatter.js

A powerful Node.js backend boilerplate with Express, MongoDB, Firebase, JWT auth, Nodemailer, cron jobs, input validation (Joi), and serverless support for Vercel. Scaffold a full-featured API backend in seconds.

const formatResponse = ({ message, data }) => {
  return {
    ...(message && { message }),
    ...(data && { data })
  };
};

module.exports = formatResponse;