Require global npm module middleware for Koa.
$ npm install koa-npmvar koa = require('koa');
var npm = require('koa-npm');
var app = koa();
app.use(npm(app));
app.use(function *() {
this.body = 'npm@' + this.app.npm.version + '\n' + this.app.npmRootPath;
})
app.listen(3000);
console.log('listening on port 3000');MIT