'use strict';
require('../common');const assert = require('assert');const events = require('events');
function listener() {}
function listener2() {}
function listener3() { return 0;}
function listener4() { return 1;}
{ const ee = new events.EventEmitter(); ee.on('foo', listener); const fooListeners = ee.listeners('foo'); assert.deepStrictEqual(ee.listeners('foo'), [listener]); ee.removeAllListeners('foo'); assert.deepStrictEqual(ee.listeners('foo'), []); assert.deepStrictEqual(fooListeners, [listener]);}
{ const ee = new events.EventEmitter(); ee.on('foo', listener); const eeListenersCopy = ee.listeners('foo'); assert.deepStrictEqual(eeListenersCopy, [listener]); assert.deepStrictEqual(ee.listeners('foo'), [listener]); eeListenersCopy.push(listener2); assert.deepStrictEqual(ee.listeners('foo'), [listener]); assert.deepStrictEqual(eeListenersCopy, [listener, listener2]);}
{ const ee = new events.EventEmitter(); ee.on('foo', listener); const eeListenersCopy = ee.listeners('foo'); ee.on('foo', listener2); assert.deepStrictEqual(ee.listeners('foo'), [listener, listener2]); assert.deepStrictEqual(eeListenersCopy, [listener]);}
{ const ee = new events.EventEmitter(); ee.once('foo', listener); assert.deepStrictEqual(ee.listeners('foo'), [listener]);}
{ const ee = new events.EventEmitter(); ee.on('foo', listener); ee.once('foo', listener2); assert.deepStrictEqual(ee.listeners('foo'), [listener, listener2]);}
{ const ee = new events.EventEmitter(); ee._events = undefined; assert.deepStrictEqual(ee.listeners('foo'), []);}
{ class TestStream extends events.EventEmitter {} const s = new TestStream(); assert.deepStrictEqual(s.listeners('foo'), []);}
{ const ee = new events.EventEmitter(); ee.on('foo', listener); const wrappedListener = ee.rawListeners('foo'); assert.strictEqual(wrappedListener.length, 1); assert.strictEqual(wrappedListener[0], listener); assert.notStrictEqual(wrappedListener, ee.rawListeners('foo')); ee.once('foo', listener); const wrappedListeners = ee.rawListeners('foo'); assert.strictEqual(wrappedListeners.length, 2); assert.strictEqual(wrappedListeners[0], listener); assert.notStrictEqual(wrappedListeners[1], listener); assert.strictEqual(wrappedListeners[1].listener, listener); assert.notStrictEqual(wrappedListeners, ee.rawListeners('foo')); ee.emit('foo'); assert.strictEqual(wrappedListeners.length, 2); assert.strictEqual(wrappedListeners[1].listener, listener);}
{ const ee = new events.EventEmitter(); ee.once('foo', listener3); ee.on('foo', listener4); const rawListeners = ee.rawListeners('foo'); assert.strictEqual(rawListeners.length, 2); assert.strictEqual(rawListeners[0](), 0); const rawListener = ee.rawListeners('foo'); assert.strictEqual(rawListener.length, 1); assert.strictEqual(rawListener[0](), 1);}