Async Functions with Babel

To use async functions in Koa in versions of node < 7.6, we recommend using babel's require hook.

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

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

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

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