Issue 4878 - Start using ESLint for adblockpluscore

lib/events.js

Index: lib/events.js
diff --git a/lib/events.js b/lib/events.js
index 2f567ce25fd5b05481db7962735bcd2b3fb65767..417d09fdc0747614beccc0a5c4800643fc89a921 100644
--- a/lib/events.js
+++ b/lib/events.js
@@ -34,7 +34,7 @@ exports.EventEmitter.prototype = {
    * @param {string}   name
    * @param {function} listener
    */
-  on: function(name, listener)
+  on(name, listener)
   {
     if (name in this._listeners)
       this._listeners[name].push(listener);
@@ -48,7 +48,7 @@ exports.EventEmitter.prototype = {
    * @param {string}   name
    * @param {function} listener
    */
-  off: function(name, listener)
+  off(name, listener)
   {
     let listeners = this._listeners[name];
     if (listeners)
@@ -62,10 +62,10 @@ exports.EventEmitter.prototype = {
   /**
    * Adds a one time listener and returns a promise that
    * is resolved the next time the specified event is emitted.
-   *
+   * @param {string} name
    * @return {Promise}
    */
-  once: function(name)
+  once(name)
   {
     return new Promise(resolve =>
     {
@@ -85,7 +85,7 @@ exports.EventEmitter.prototype = {
    * @param {string} name
    * @return {function[]}
    */
-  listeners: function(name)
+  listeners(name)
   {
     let listeners = this._listeners[name];
     return listeners ? listeners.slice() : [];
@@ -97,14 +97,10 @@ exports.EventEmitter.prototype = {
    * @param {string} name
    * @param {...*}   [arg]
    */
-  emit: function(name)
+  emit(name, ...args)
   {
-    let args = [];
-    for (let i = 1; i < arguments.length; i++)
-      args.push(arguments[i]);
-
     let listeners = this.listeners(name);
     for (let listener of listeners)
-      listener.apply(null, args);
+      listener(...args);
   }
 };