Index: node_modules/are-we-there-yet/lib/tracker-base.js
===================================================================
--- node_modules/are-we-there-yet/lib/tracker-base.js	(revision 81bc7da776d8cda42939ef4ab350c88d13b4941f)
+++ node_modules/are-we-there-yet/lib/tracker-base.js	(revision 81bc7da776d8cda42939ef4ab350c88d13b4941f)
@@ -0,0 +1,11 @@
+'use strict'
+var EventEmitter = require('events').EventEmitter
+var util = require('util')
+
+var trackerId = 0
+var TrackerBase = module.exports = function (name) {
+  EventEmitter.call(this)
+  this.id = ++trackerId
+  this.name = name
+}
+util.inherits(TrackerBase, EventEmitter)