A simple pub-sub service for custom events written in ES6 or whatever the latest version of EcmaScript is called.

npm -i -D pub-sub-es

import createPubSub from 'pub-sub-es';

// Creates a new pub-sub event listener stack.
const pubSub = createPubSub();

// Subscribe to an event
const myEmojiEventHandler = msg => console.log(`🎉 ${msg} 😍`);
pubSub.on('my-emoji-event', myEmojiEventHandler);

// Publish an event
pubSub.publish('my-emoji-event', 'Yuuhuu');  // >> 🎉 Yuuhuu 😍

// Unsubscribe
pubSub.unsubscribe('my-emoji-event', myEmojiEventHandler);

pub-sub-es exports the factory function (createPubSub) for creating a new pub-sub service by default and a global pub-sub service (globalPubSub). The API is the same.

• stack is an object holding for holding the event listeners and defaults to a new stack when being omitted.

Returns: a new pub-sub service

• event is the name of the event to be published.
• news is an arbitrary value that is being broadcasted.

• event is the name of the event to be published.
• handler is the handler function that is being called together with the broadcasted value.
• times is the number of times the handler is invoked before it's automatically unsubscribed.

Returns: an object of form { event, handler }. This object can be used to automatically unsubscribe, e.g., pubSub.unsubscribe(pubSub.subscribe('my-event', myHandler)).

• event is the name of the event to be published. Optionally, unsubscribe accepts an object of form { event, handler} coming from subscribe.
• news is an arbitrary value that is being broadcasted.

Some handy commands:

• npm build: builds the UMD library
• npm run watch: continuously builds the UMD library
• npm run lint: checks the code style
• npm test: runs the test suite