Server Side development with Node.js and Koa.js Quick Start Guide

Setting up the router

In order to be able to visit different endpoints, we need to set up some form of a router, to route different URL oath visits to different actions. Koa does not come bundled with an out-of-the-box router like Express does; hence, we will be making use of koa-router, which is an open source RESTful router for use with Koa.

Let's start off by creating a router.js file in the middleware folder, and inserting the following contents:

// ./middleware/router.jsconst KoaRouter = require('koa-router');const router = new KoaRouter();router  .get('/', async ctx => (ctx.body = 'Welcome to the contacts API!'));module.exports = router;

In the preceding code block, we require the koa-router dependency, and we initialize it. After that, ...