node-express-mongodb-jwt-rest-api-skeleton/app/controllers/cities/helpers/index.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 { cityExists } = require('./cityExists')
const { cityExistsExcludingItself } = require('./cityExistsExcludingItself')
const { getAllItemsFromDB } = require('./getAllItemsFromDB')

module.exports = {
  cityExists,
  cityExistsExcludingItself,
  getAllItemsFromDB
}