events: define properties on prototype

tricknotes · bnoordhuis · commit 7ce5a310612b · 2013-05-30T14:50:14.000+02:00
Speeds up EventEmitter object construction by about 15-20%.
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.

Original file line number	Diff line number	Diff line change
`@@ -37,6 +37,9 @@ function EventEmitter() {`
`37`	`37`	`}`
`38`	`38`	`exports.EventEmitter = EventEmitter;`
`39`	`39`
	`40`	`+EventEmitter.prototype.domain = undefined;`
	`41`	`+EventEmitter.prototype._events = undefined;`
	`42`	`+EventEmitter.prototype._maxListeners = undefined;`
`40`	`43`
`41`	`44`	`// By default EventEmitters will print a warning if more than 10 listeners are`
`42`	`45`	`// added to it. This is a useful default which helps finding memory leaks.`