es2015/externals.js
/**
* @external {EventEmitter2} https://github.com/asyncly/EventEmitter2#api
*/
/**
* @external {Express.Application} http://expressjs.com/en/4x/api.html
*/
/**
* @external {http.Server} https://nodejs.org/api/http.html#http_class_http_server
*/
/**
* @external {stream.Readable} https://nodejs.org/api/stream.html#stream_class_stream_readable
*/