events: deprecate static listenerCount function

As per the discussion in #734, this patch deprecates the usage of
`EventEmitter.listenerCount` static function in the docs, and introduces
the `listenerCount` function in the prototype of `EventEmitter` itself.

PR-URL: https://github.com/nodejs/node/pull/2349
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>

1 files changed, 1 insertions, 2 deletions

diff --git a/benchmark/events/ee-listener-count.js b/benchmark/events/ee-listener-count-on-prototype.js
index a697c41b8b..8d536edd62 100644
--- a/benchmark/events/ee-listener-count.js
+++ b/benchmark/events/ee-listener-count-on-prototype.js
@@ -7,14 +7,13 @@ function main(conf) {
   var n = conf.n | 0;
 
   var ee = new EventEmitter();
-  var listenerCount = EventEmitter.listenerCount;
 
   for (var k = 0; k < 10; k += 1)
     ee.on('dummy', function() {});
 
   bench.start();
   for (var i = 0; i < n; i += 1) {
-    var r = listenerCount(ee, 'dummy');
+    var r = ee.listenerCount('dummy');
   }
   bench.end(n);
 }