little-pubsub

> Small publish & subscribe class

INSTALL

#### npm

``sh
npm i --save @crabas0npm/nihil-fuga-aut
`

USAGE

`js
import PubSub from '@crabas0npm/nihil-fuga-aut'
const pubsub = new PubSub()
`

Example

`js
import PubSub from '@crabas0npm/nihil-fuga-aut'
const pubsub = new PubSub()

pubsub.subscribe('event', (value) => {
console.log(value)
})

pubsub.publish('event', 'hello')
// always runs handler
// (can use to overide littlePubsub.verbose setting without changing the behavior of the rest)
pubsub.publishVerbose('event', 'hello')

pubsub.unsubscribe('event', (value) => {
console.log(value)
})

pubsub.hasSubscribers('event')

await pubsub.once('event')
`

API

$3

verbose: when false only fires after value change


`js
pubsub = new PubSub({
verbose: false // default: true
})
`

#### subscribe

name: name of the channel to subscribe to

handler: method

context: context


`js
pubsub.subscribe('event-name', (data) => {
console.log(data)
})
`

#### unsubscribe

name: name of the channel to unsubscribe

handler: method

context: context


`js
pubsub.unsubscribe('event-name', (data) => {
console.log(data)
})
`

#### publish

name: name of the channel to publish to

handler: method

verbose: boolean


`js
pubsub.publish('event-name', 'data')
`

#### publish

name: name of the channel to publish to

handler: method


`js
pubsub.publishVerbose('event-name', 'data')
`

#### once

name: name of the channel to publish to


`js
await pubsub.once('event-name')
`

#### hasSubscribers

name: name of the channel to publish to


`js
pubsub.hasSubscribers('event-name')
``