listenercount

backwards compatible version of builtin events.listenercount
()
circleci
A polyfill of Node.js 0.12+'s events.listenerCount function for Node.js 0.10. Uses the builtin if present, otherwise uses polyfill implementation.

usage

var listenerCount = require('listenercount')
var EventEmitter = require('events').EventEmitter

var ee = new EventEmitter()
ee.on('event', function () {})
listenerCount(ee, 'event') // => 1
listenerCount(ee, 'foo') // => 0

api

listenerCount(ee : EventEmitter, eventName : String) => Number

Returns the number of listeners for a given eventName on an EventEmitter.

installation

$ npm install listenercount

running the tests

From package root:

$ npm install
$ npm test

contributors

• jden

license

ISC. (c) MMXVI jden . See LICENSE.md