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'use strict'; require('../common'); const EventEmitter = require('events'); const assert = require('assert'); const EE = new EventEmitter(); const m = () => {}; EE.on('foo', () => {}); assert.deepStrictEqual(['foo'], EE.eventNames()); EE.on('bar', m); assert.deepStrictEqual(['foo', 'bar'], EE.eventNames()); EE.removeListener('bar', m); assert.deepStrictEqual(['foo'], EE.eventNames()); const s = Symbol('s'); EE.on(s, m); assert.deepStrictEqual(['foo', s], EE.eventNames()); EE.removeListener(s, m); assert.deepStrictEqual(['foo'], EE.eventNames());