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'use strict'; const common = require('../common'); const EventEmitter = require('events'); const assert = require('assert'); const ee = new EventEmitter(); const handler = () => {}; assert.deepStrictEqual(ee.eventNames(), []); assert.strictEqual(ee._events.hasOwnProperty, undefined); assert.strictEqual(ee._events.toString, undefined); ee.on('__proto__', handler); ee.on('__defineGetter__', handler); ee.on('toString', handler); assert.deepStrictEqual(ee.eventNames(), [ '__proto__', '__defineGetter__', 'toString', ]); assert.deepStrictEqual(ee.listeners('__proto__'), [handler]); assert.deepStrictEqual(ee.listeners('__defineGetter__'), [handler]); assert.deepStrictEqual(ee.listeners('toString'), [handler]); ee.on('__proto__', common.mustCall(function(val) { assert.strictEqual(val, 1); })); ee.emit('__proto__', 1); process.on('__proto__', common.mustCall(function(val) { assert.strictEqual(val, 1); })); process.emit('__proto__', 1);