events: define properties on prototype

Speeds up EventEmitter object construction by about 15-20%.
langpavel · May 30, 2013 · 7ce5a31 · 7ce5a31
1 parent 6af8788
commit 7ce5a31
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/lib/events.js b/lib/events.js
@@ -37,6 +37,9 @@ function EventEmitter() {
 }
 exports.EventEmitter = EventEmitter;
 
+EventEmitter.prototype.domain = undefined;
+EventEmitter.prototype._events = undefined;
+EventEmitter.prototype._maxListeners = undefined;
 
 // By default EventEmitters will print a warning if more than 10 listeners are
 // added to it. This is a useful default which helps finding memory leaks.