node-express-mongodb-jwt-rest-api-skeleton/app/middleware/db/listInitOptions.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 { buildErrObject } = require('../../middleware/utils')
const { buildSort } = require('./buildSort')

/**
 * Builds initial options for query
 * @param {Object} query - query object
 */
const listInitOptions = (req = {}) => {
  return new Promise(async (resolve, reject) => {
    try {
      const order = req.query.order || -1
      const sort = req.query.sort || 'createdAt'
      const sortBy = buildSort(sort, order)
      const page = parseInt(req.query.page, 10) || 1
      const limit = parseInt(req.query.limit, 10) || 5
      const options = {
        sort: sortBy,
        lean: true,
        page,
        limit
      }
      resolve(options)
    } catch (error) {
      console.log(error.message)
      reject(buildErrObject(422, 'ERROR_WITH_INIT_OPTIONS'))
    }
  })
}

module.exports = { listInitOptions }