Initial commit

lib/synceventemitter.js

@@ -0,0 +1,39 @@
+'use strict';
+
+function SyncEventEmitter () {
+    this.listeners = new Map();
+}
+
+SyncEventEmitter.prototype.on = function (ev, callback) {
+    if (this.listeners.has(ev)) {
+        this.listeners.remove(ev);
+    }
+    
+    this.listeners.set(ev, callback);
+    
+    return this;
+};
+
+SyncEventEmitter.prototype.emit = function (ev) {
+    if (this.listeners.has(ev)) {
+        let params = [];
+        
+        for (var i = 1 ; i < arguments.length ; ++i) {
+            params.push(arguments[i]);
+        }
+
+        return this.listeners.get(ev).apply(undefined, params);
+    }
+};
+
+SyncEventEmitter.prototype.removeListener = function (ev) {
+    if (this.listeners.has(ev)) {
+        this.listeners.remove(ev);
+    }
+};
+
+SyncEventEmitter.prototype.hasListener = function (ev) {
+    return this.listeners.has(ev);
+};
+
+module.exports = SyncEventEmitter;