#2192 Fix order of events in TTS/translate interaction

public/lib/eventemitter.js

@@ -42,6 +42,46 @@ EventEmitter.prototype.on = function (event, listener) {
     this.events[event].push(listener);
 };
 
+/**
+ * Makes the listener the last to be called when the event is emitted
+ * @param {string} event Event name
+ * @param {function} listener Event listener
+ */
+EventEmitter.prototype.makeLast = function (event, listener) {
+    if (typeof this.events[event] !== 'object') {
+        this.events[event] = [];
+    }
+
+    const events = this.events[event];
+    const idx = events.indexOf(listener);
+
+    if (idx > -1) {
+        events.splice(idx, 1);
+    }
+
+    events.push(listener);
+}
+
+/**
+ * Makes the listener the first to be called when the event is emitted
+ * @param {string} event Event name
+ * @param {function} listener Event listener
+ */
+EventEmitter.prototype.makeFirst = function (event, listener) {
+    if (typeof this.events[event] !== 'object') {
+        this.events[event] = [];
+    }
+
+    const events = this.events[event];
+    const idx = events.indexOf(listener);
+
+    if (idx > -1) {
+        events.splice(idx, 1);
+    }
+
+    events.unshift(listener);
+}
+
 EventEmitter.prototype.removeListener = function (event, listener) {
     var idx;