@ianwalter/subpub

A super-simple JavaScript Subscribe/Publish (pubsub) implementation

Installation

yarn add @ianwalter/subpub

Usage

import { Subpub } from '@ianwalter/subpub'

// Create a Subpub instance.
const sp = new Subpub()

// Create a subscription to a topic.
const usubscribe = sp.sub('alerts', msg => console.log(msg))

// Publish a message on the topic.
sp.pub('alerts', 'We ran out of coffee!')

// Unsubscribe the subscriber from the topic.
usubscribe()

// Create a subscriber with an object key that can be pattern-matched.
sp.sub({ key: '1d', name: 'BIBA' }, async msg => msg.toUpperCase())

// Send a message to the subscriber using only the key property to match and
// wait for the returned promise to resolve with the transformed value.
await sp.pub({ key: '1d' }, 'Te biba nachdi') // => TE BIBA NACHDI

License

Apache 2.0 with Commons Clause - See LICENSE

Created by Ian Walter