deno.land / std@0.166.0 / node / _tools / test / parallel / test-event-emitter-symbols.js

test-event-emitter-symbols.js
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// deno-fmt-ignore-file// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.// Taken from Node 18.12.0// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually
'use strict';
const common = require('../common');const EventEmitter = require('events');const assert = require('assert');
const ee = new EventEmitter();const foo = Symbol('foo');const listener = common.mustCall();
ee.on(foo, listener);assert.deepStrictEqual(ee.listeners(foo), [listener]);
ee.emit(foo);
ee.removeAllListeners();assert.deepStrictEqual(ee.listeners(foo), []);
ee.on(foo, listener);assert.deepStrictEqual(ee.listeners(foo), [listener]);
ee.removeListener(foo, listener);assert.deepStrictEqual(ee.listeners(foo), []);
std

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a year ago