The dependency tree of my module under test

module-structure.txt

BunyanLogstashTcpStream.js
│
│   // https://nodejs.org/dist/latest-v6.x/docs/api/events.html#events_class_eventemitter
├── import { EventEmitter } from 'events';
│
│   // https://nodejs.org/dist/latest-v6.x/docs/api/net.html#net_net
├── import net from 'net';
│
│   // https://www.npmjs.com/package/bunyan
├── import bunyan from 'bunyan';
│
│   // https://www.npmjs.com/package/CBuffer
├── import CBuffer from 'CBuffer';
│
├─┬ import getIP from '../utils/getIP';
│ │
│ └─┬ getIP.js
│   │
│   │   // https://nodejs.org/dist/latest-v6.x/docs/api/os.html#os_os
│   └── import os from 'os';
│
└─┬ import getLogLevelName from './utils/getLogLevelName';
  │
  └─┬ getLogLevelName.js
    │
    │   // https://www.npmjs.com/package/bunyan
    └── import { TRACE, DEBUG, INFO, WARN, ERROR, FATAL } from 'bunyan';