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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>
50 lines
870 B
JavaScript
50 lines
870 B
JavaScript
'use strict';
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var common = require('../common');
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var assert = require('assert');
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var EventEmitter = require('events').EventEmitter;
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var util = require('util');
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util.inherits(MyEE, EventEmitter);
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function MyEE(cb) {
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this.once(1, cb);
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this.emit(1);
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this.removeAllListeners();
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EventEmitter.call(this);
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}
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var called = false;
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var myee = new MyEE(function() {
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called = true;
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});
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util.inherits(ErrorEE, EventEmitter);
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function ErrorEE() {
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this.emit('error', new Error('blerg'));
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}
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assert.throws(function() {
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new ErrorEE();
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}, /blerg/);
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process.on('exit', function() {
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assert(called);
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assert.deepEqual(myee._events, {});
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console.log('ok');
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});
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function MyEE2() {
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EventEmitter.call(this);
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}
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MyEE2.prototype = new EventEmitter();
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var ee1 = new MyEE2();
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var ee2 = new MyEE2();
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ee1.on('x', function() {});
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assert.equal(ee2.listenerCount('x'), 0);
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