use external stringify-stream for example

core/util.js

@@ -159,22 +159,6 @@ var util = {
   makeEventEmitter: function(dest) {
     util.inherit(dest, require('events').EventEmitter);
   },
-
-  // @link https://stackoverflow.com/questions/21124701/creating-a-node-js-readable-stream-from-a-javascript-object-the-simplest-possi#answer-21127245
-  StringifyStream: (function() {
-    var StringifyStream = function() {
-        require('stream').Transform.call(this);
-        this._readableState.objectMode = false;
-        this._writableState.objectMode = true;
-    }
-    require('util').inherits(StringifyStream, require('stream').Transform);
-    StringifyStream.prototype._transform = function(obj, encoding, cb){
-        this.push(JSON.stringify(obj) + '\n');
-        cb();
-    };
-
-    return StringifyStream;
-  })(),
   // TODO:
   gekkoMode: function() {
     return 'realtime';

docs/internals/budfox.md

@@ -19,7 +19,7 @@ BudFox is a small part of Gekko's core that aggregates realtime market data from
     new BudFox(config)
       .start()
       // convert JS objects to JSON string
-      .pipe(new util.StringifyStream())
+      .pipe(new require('stringify-stream')())
       // output to standard out
       .pipe(process.stdout);
 

gekko.js

@@ -95,7 +95,7 @@ StringifyStream.prototype._transform = function(obj, encoding, cb){
 
 new BudFox(config.watch)
   .start()
-  .pipe(new util.StringifyStream())
+  .pipe(new require('stringify-stream')())
   .pipe(process.stdout);
 
 return;