To useasync functions in Koa in versions of node < 7.6, we recommend usingbabel's require hook.

require('babel-register');// require the rest of the app that needs to be transpiled after the hookconstapp=require('./app');

To parse and transpile async functions,you should at a minimum have thetransform-async-to-generatorortransform-async-to-module-method plugins.For example, in your.babelrc file, you should have:

{"plugins": ["transform-async-to-generator"]}

You can also use theenv preset with a target option"node": "current" instead.