first commit

core/emitter.js

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+// Gekko uses a custom event emitter within the GekkoStream (the plugins) to guarantee
+// the correct order of events that are triggered by eachother. Turns sync events from
+// LIFO into a FIFO stack based model.
+//
+// More details here: https://forum.gekko.wizb.it/thread-56579.html
+
+const util = require('util');
+const events = require('events');
+const NativeEventEmitter = events.EventEmitter;
+
+const GekkoEventEmitter = function() {
+  NativeEventEmitter.call(this);
+  this.defferedEvents = [];
+}
+
+util.inherits(GekkoEventEmitter, NativeEventEmitter);
+
+// push to stack
+GekkoEventEmitter.prototype.deferredEmit = function(name, payload) {
+  this.defferedEvents.push({name, payload});
+}
+
+// resolve FIFO
+GekkoEventEmitter.prototype.broadcastDeferredEmit = function() {
+  if(this.defferedEvents.length === 0)
+    return false;
+
+  const event = this.defferedEvents.shift();
+
+  this.emit(event.name, event.payload);
+  return true;
+}
+
+module.exports = GekkoEventEmitter;