| Server IP : 104.21.30.238 / Your IP : 216.73.216.145 Web Server : LiteSpeed System : Linux premium151.web-hosting.com 4.18.0-553.44.1.lve.el8.x86_64 #1 SMP Thu Mar 13 14:29:12 UTC 2025 x86_64 User : tempvsty ( 647) PHP Version : 8.0.30 Disable Function : NONE MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : OFF | Pkexec : OFF Directory : /././opt/alt/alt-nodejs19/root/usr/lib/node_modules/npm/node_modules/events/tests/ |
Upload File : |
'use strict';
var common = require('./common');
var EventEmitter = require('../');
var assert = require('assert');
var myEE = new EventEmitter();
var m = 0;
// This one comes last.
myEE.on('foo', common.mustCall(function () {
assert.strictEqual(m, 2);
}));
// This one comes second.
myEE.prependListener('foo', common.mustCall(function () {
assert.strictEqual(m++, 1);
}));
// This one comes first.
myEE.prependOnceListener('foo',
common.mustCall(function () {
assert.strictEqual(m++, 0);
}));
myEE.emit('foo');
// Verify that the listener must be a function
assert.throws(function () {
var ee = new EventEmitter();
ee.prependOnceListener('foo', null);
}, 'TypeError: The "listener" argument must be of type Function. Received type object');