Also see Minimal Koa.JS example with Router & Body parser
const Koa = require('koa'); const app = new Koa(); app.use(async ctx => { ctx.body = {status: 'success'}; }); app.listen(8080);
To install (see this previous post for a guide on installing NodeJS & NPM):
npm install --save koa node index.js
Then go to http://localhost:8080/ to see the test page.