sublish is a minimalist lightweight (663 Bytes minified and 336 Bytes gzipped) implementation of publish/subscribe.

npm install sublish

git clone https://github.com/pluma/sublish.git
cd sublish
npm install
npm run test && npm run dist

component install pluma/sublish

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bower install sublish

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Download the latest minified CommonJS release and add it to your project.

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Download the latest minified AMD release and add it to your project.

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Download the latest minified standalone release and add it to your project.

<script src="/your/js/path/sublish.globals.min.js"></script>

This makes the sublish module available in the global namespace.

var myPubSub = require('sublish')();
var listener = function(message) {
  console.log('myPubSub says: "' + message + '"');
});
myPubSub.subscribe(listener);
myPubSub.publish('something amazing');
// -> 'myPubSub says: "something amazing"'
myPubSub.unsubscribe(listener);
myPubSub.publish('talking to myself');
// -> nothing happens

var PubSub = require('sublish').PubSub;
var inherits = require('util').inherits;
function MyFancyPubSub() {
  PubSub.call(this);
}
inherits(MyFancyPubSub, PubSub);

var PubSub = require('sublish').PubSub;
var extend = require('extend');
function MyFancyPubSub() {
  PubSub.call(this);
}
extend(MyFancyPubSub.prototype, PubSub.prototype);

Creates a new PubSub instance.

Adds the given function to the instance's subscribers.

Note: the function will be invoked with its this context set to the given ctx. If ctx is false-y, the PubSub instance will be used instead.

Removes the given function from the instance's subscribers.

Returns true if the subscriber exists, false otherwise.

Publishes the given arguments as a message. Every callback function in this object's list of subscribers will be called sequentially with the given messages as its arguments.

The MIT/Expat license. For more information, see https://pluma.mit-license.org/ or the accompanying LICENSE file.