'use strict'; const Koa = require('..'); const app = new Koa(); // number of middleware let n = parseInt(process.env.MW || '1', 10); console.log(` ${n} middleware`); while (n--) { app.use((ctx, next) => next()); } const body = new Buffer('Hello World'); app.use((ctx, next) => next().then(() => ctx.body = body)); app.listen(3333);