Beyo Events

Advanced events emitter.

Features

• Consistent API with Node's EventEmitter module
• Trie event emitter with wildcards
• Using range matches with wildcards
• Asynchronous and synchronous events emitting
• Adding multiple listeners to the same event
• Listener countdown

Install

npm install beyo-events --save

Usage

Simple EventEmitter replacement

1var EventEmitter = require('beyo-events').EventEmitter;
2
3var events = new EventEmitter();
4
5events.on('foo', function (param1, param2, param3) {
6  console.log('Hello!', param1, param2, param3);
7});
8
9events.emit('foo', 1, 2, 3);

Using event wildcards

1var EventEmitter = require('beyo-events').EventEmitter;
2
3var events = new EventEmitter();
4
5events.on('project.modules.a.foo', moduleAfooCallback);
6events.on('project.modules.b.foo', moduleBfooCallback);
7
8events.emit('project.modules.*.foo');

Using range identifiers

1var EventEmitter = require('beyo-events').EventEmitter;
2
3var events = new EventEmitter();
4
5events.on('user.update:1-100', legacySaveCallback);
6events.on('user.update:101-*', newSaveCallback);
7
8// user.id = 1234
9events.emit('user.update:' + user.id, user);   // triggers newSaveCallback

Once and other listener countdown

1var EventEmitter = require('beyo-events').EventEmitter;
2
3var events = new EventEmitter();
4
5// listen an "unlimited" amount of time
6events.on('foo', function () { });
7
8// listen once, then remove itself automatically
9events.once('foo', function () { });
10
11// .... same as
12events.on('foo', 1, function () { });
13
14// listen 10 times, then remove itself
15events.on('foo', 10, function () { });
16

Contribution

All contributions welcome! Every PR must be accompanied by their associated unit tests!

License

The MIT License (MIT)

Copyright (c) 2014 Mind2Soft yanick.rochon@mind2soft.com

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.