Koa Skeleton
const Koa = require('koa')
const { errorHandler, errorLogger } = require('./errors')
const logHandler = require('./logger')
const configHandler = require('./config')
module.exports = ({ routes, logTag }) => {
const app = new Koa()
app.use(errorHandler)
app.use(logHandler)
app.use(configHandler)
app.use(routes)
app.on('error', errorLogger)
return app
}