Sha256: 657f12c4c9c7dd06f105924afb93c6a078938617fff0a1fb775c733e54e7300c
Contents?: true
Size: 833 Bytes
Versions: 32
Compression:
Stored size: 833 Bytes
Contents
'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');
Version data entries
32 entries across 31 versions & 10 rubygems