node-express-mongodb-jwt-rest-api-skeleton/app/controllers/users/createUser.js

Node.js express.js MongoDB JWT REST API - This is a basic API REST skeleton written on JavaScript using async/await. Great for building a starter web API for your front-end (Android, iOS, Vue, react, angular, or anything that can consume an API)

const { matchedData } = require('express-validator')
const { handleError } = require('../../middleware/utils')
const {
  emailExists,
  sendRegistrationEmailMessage
} = require('../../middleware/emailer')
const { createItemInDb } = require('./helpers')

/**
 * Create item function called by route
 * @param {Object} req - request object
 * @param {Object} res - response object
 */
const createUser = async (req, res) => {
  try {
    // Gets locale from header 'Accept-Language'
    const locale = req.getLocale()
    req = matchedData(req)
    const doesEmailExists = await emailExists(req.email)
    if (!doesEmailExists) {
      const item = await createItemInDb(req)
      sendRegistrationEmailMessage(locale, item)
      res.status(201).json(item)
    }
  } catch (error) {
    handleError(res, error)
  }
}

module.exports = { createUser }