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'use strict';
require('../common');
const assert = require('assert');
const EventEmitter = require('events');
const emitter = new EventEmitter();
emitter.on('foo', () => {});
emitter.on('foo', () => {});
emitter.on('baz', () => {});
// Allow any type
emitter.on(123, () => {});
assert.strictEqual(EventEmitter.listenerCount(emitter, 'foo'), 2);
assert.strictEqual(emitter.listenerCount('foo'), 2);
assert.strictEqual(emitter.listenerCount('bar'), 0);
assert.strictEqual(emitter.listenerCount('baz'), 1);
assert.strictEqual(emitter.listenerCount(123), 1);
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