mixin EventEmitter

index.js

@@ -5,6 +5,7 @@
  */
 
 var Stream = require('stream').Stream;
+var EventEmitter = require('events').EventEmitter;
 
 /**
  * Constructor.
@@ -21,6 +22,8 @@ function gm (source, height, color) {
     return new gm(source, height, color);
   }
 
+  EventEmitter.call(this);
+
   this._options = {};
   this.options(this.__proto__._options);
 
@@ -65,6 +68,14 @@ function gm (source, height, color) {
   });
 }
 
+/**
+ * Mixin EventEmitter
+ */
+
+for (var method in EventEmitter.prototype) {
+  gm.prototype[method] = EventEmitter.prototype[method];
+}
+
 var parent = gm;
 gm.subClass = function subClass (options) {
   function gm (source, height, color) {