node-express-mongodb-jwt-rest-api-skeleton/app/middleware/utils/validateResult.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 { validationResult } = require('express-validator')
const { handleError } = require('./handleError')
const { buildErrObject } = require('./buildErrObject')

/**
 * Builds error for validation files
 * @param {Object} req - request object
 * @param {Object} res - response object
 * @param {Object} next - next object
 */
const validateResult = (req, res, next) => {
  try {
    validationResult(req).throw()
    if (req.body.email) {
      req.body.email = req.body.email.toLowerCase()
    }
    return next()
  } catch (err) {
    return handleError(res, buildErrObject(422, err.array()))
  }
}

module.exports = { validateResult }