Wiring up a NoSQL database module to Express

Now we have automated tests for the model and a user-defined module which makes use of them. This ensures the stability of the module and makes it ready for wider adoption.

It is time to build a new Express-based application and add a route, exposing the new module to it:

const express = require('express');
const router = express.Router();

const catalog = require('../modules/catalog');
const model = require('../model/item.js');

router.get('/', function(request, response, next) {
  catalog.findAllItems(response);
});

router.get('/item/:itemId', function(request, response, next) {
  console.log(request.url + ' : querying for ' + request.params.itemId);
  catalog.findItemById(request.params.itemId, response);
});

router.get('/:categoryId', function(request, response, next) {
  console.log(request.url + ' : querying for ' + request.params.categoryId);
  catalog.findItemsByCategory(request.params.categoryId, response);
});

router.post('/', function...