refactor(lib): small update in lib/emitter_wrapper

karma-runner · Oct 16, 2018 · 1458267 · 1458267
1 parent c311ac0
commit 1458267
Showing 1 changed file with 1 addition and 6 deletions.
diff --git a/lib/emitter_wrapper.js b/lib/emitter_wrapper.js
@@ -8,13 +8,8 @@ class EmitterWrapper {
 
   addListener (event, listener) {
     this.emitter.addListener(event, listener)
-
-    if (!this.listeners.hasOwnProperty(event)) {
-      this.listeners[event] = []
-    }
-
+    this.listeners[event] = this.listeners[event] || []
     this.listeners[event].push(listener)
-
     return this
   }